From: Greg Kroah-Hartman Date: Thu, 28 Oct 2010 16:44:56 +0000 (-0700) Subject: Merge 'staging-next' to Linus's tree X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=e4c5bf8e3dca827a1b3a6fac494eae8c74b7e1e7;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git Merge 'staging-next' to Linus's tree This merges the staging-next tree to Linus's tree and resolves some conflicts that were present due to changes in other trees that were affected by files here. Signed-off-by: Greg Kroah-Hartman --- e4c5bf8e3dca827a1b3a6fac494eae8c74b7e1e7 diff --cc arch/arm/plat-omap/common.c index 221a675ebbae,57205a49289e..f04731820301 --- a/arch/arm/plat-omap/common.c +++ b/arch/arm/plat-omap/common.c @@@ -16,10 -17,33 +16,11 @@@ #include #include -#include -#include -#include -#include -#include - #include #include -#include -#include -#include -#include #include + #include -#include - -#if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3) -# include "../mach-omap2/sdrc.h" -#endif #define NO_LENGTH_CHECK 0xffffffff @@@ -64,4 -88,272 +65,5 @@@ void __init omap_reserve(void { omapfb_reserve_sdram_memblock(); omap_vram_reserve_sdram_memblock(); + omap_dsp_reserve_sdram_memblock(); } - -/* - * 32KHz clocksource ... always available, on pretty most chips except - * OMAP 730 and 1510. Other timers could be used as clocksources, with - * higher resolution in free-running counter modes (e.g. 12 MHz xtal), - * but systems won't necessarily want to spend resources that way. - */ - -#define OMAP16XX_TIMER_32K_SYNCHRONIZED 0xfffbc410 - -#if !(defined(CONFIG_ARCH_OMAP730) || defined(CONFIG_ARCH_OMAP15XX)) - -#include - -/* - * offset_32k holds the init time counter value. It is then subtracted - * from every counter read to achieve a counter that counts time from the - * kernel boot (needed for sched_clock()). - */ -static u32 offset_32k __read_mostly; - -#ifdef CONFIG_ARCH_OMAP16XX -static cycle_t omap16xx_32k_read(struct clocksource *cs) -{ - return omap_readl(OMAP16XX_TIMER_32K_SYNCHRONIZED) - offset_32k; -} -#else -#define omap16xx_32k_read NULL -#endif - -#ifdef CONFIG_ARCH_OMAP2420 -static cycle_t omap2420_32k_read(struct clocksource *cs) -{ - return omap_readl(OMAP2420_32KSYNCT_BASE + 0x10) - offset_32k; -} -#else -#define omap2420_32k_read NULL -#endif - -#ifdef CONFIG_ARCH_OMAP2430 -static cycle_t omap2430_32k_read(struct clocksource *cs) -{ - return omap_readl(OMAP2430_32KSYNCT_BASE + 0x10) - offset_32k; -} -#else -#define omap2430_32k_read NULL -#endif - -#ifdef CONFIG_ARCH_OMAP3 -static cycle_t omap34xx_32k_read(struct clocksource *cs) -{ - return omap_readl(OMAP3430_32KSYNCT_BASE + 0x10) - offset_32k; -} -#else -#define omap34xx_32k_read NULL -#endif - -#ifdef CONFIG_ARCH_OMAP4 -static cycle_t omap44xx_32k_read(struct clocksource *cs) -{ - return omap_readl(OMAP4430_32KSYNCT_BASE + 0x10) - offset_32k; -} -#else -#define omap44xx_32k_read NULL -#endif - -/* - * Kernel assumes that sched_clock can be called early but may not have - * things ready yet. - */ -static cycle_t omap_32k_read_dummy(struct clocksource *cs) -{ - return 0; -} - -static struct clocksource clocksource_32k = { - .name = "32k_counter", - .rating = 250, - .read = omap_32k_read_dummy, - .mask = CLOCKSOURCE_MASK(32), - .shift = 10, - .flags = CLOCK_SOURCE_IS_CONTINUOUS, -}; - -/* - * Returns current time from boot in nsecs. It's OK for this to wrap - * around for now, as it's just a relative time stamp. - */ -unsigned long long sched_clock(void) -{ - return clocksource_cyc2ns(clocksource_32k.read(&clocksource_32k), - clocksource_32k.mult, clocksource_32k.shift); -} - -/** - * read_persistent_clock - Return time from a persistent clock. - * - * Reads the time from a source which isn't disabled during PM, the - * 32k sync timer. Convert the cycles elapsed since last read into - * nsecs and adds to a monotonically increasing timespec. - */ -static struct timespec persistent_ts; -static cycles_t cycles, last_cycles; -void read_persistent_clock(struct timespec *ts) -{ - unsigned long long nsecs; - cycles_t delta; - struct timespec *tsp = &persistent_ts; - - last_cycles = cycles; - cycles = clocksource_32k.read(&clocksource_32k); - delta = cycles - last_cycles; - - nsecs = clocksource_cyc2ns(delta, - clocksource_32k.mult, clocksource_32k.shift); - - timespec_add_ns(tsp, nsecs); - *ts = *tsp; -} - -static int __init omap_init_clocksource_32k(void) -{ - static char err[] __initdata = KERN_ERR - "%s: can't register clocksource!\n"; - - if (cpu_is_omap16xx() || cpu_class_is_omap2()) { - struct clk *sync_32k_ick; - - if (cpu_is_omap16xx()) - clocksource_32k.read = omap16xx_32k_read; - else if (cpu_is_omap2420()) - clocksource_32k.read = omap2420_32k_read; - else if (cpu_is_omap2430()) - clocksource_32k.read = omap2430_32k_read; - else if (cpu_is_omap34xx()) - clocksource_32k.read = omap34xx_32k_read; - else if (cpu_is_omap44xx()) - clocksource_32k.read = omap44xx_32k_read; - else - return -ENODEV; - - sync_32k_ick = clk_get(NULL, "omap_32ksync_ick"); - if (sync_32k_ick) - clk_enable(sync_32k_ick); - - clocksource_32k.mult = clocksource_hz2mult(32768, - clocksource_32k.shift); - - offset_32k = clocksource_32k.read(&clocksource_32k); - - if (clocksource_register(&clocksource_32k)) - printk(err, clocksource_32k.name); - } - return 0; -} -arch_initcall(omap_init_clocksource_32k); - -#endif /* !(defined(CONFIG_ARCH_OMAP730) || defined(CONFIG_ARCH_OMAP15XX)) */ - -/* Global address base setup code */ - -#if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3) - -static void __init __omap2_set_globals(struct omap_globals *omap2_globals) -{ - omap2_set_globals_tap(omap2_globals); - omap2_set_globals_sdrc(omap2_globals); - omap2_set_globals_control(omap2_globals); - omap2_set_globals_prcm(omap2_globals); - omap2_set_globals_uart(omap2_globals); -} - -#endif - -#if defined(CONFIG_ARCH_OMAP2420) - -static struct omap_globals omap242x_globals = { - .class = OMAP242X_CLASS, - .tap = OMAP2_L4_IO_ADDRESS(0x48014000), - .sdrc = OMAP2420_SDRC_BASE, - .sms = OMAP2420_SMS_BASE, - .ctrl = OMAP2420_CTRL_BASE, - .prm = OMAP2420_PRM_BASE, - .cm = OMAP2420_CM_BASE, - .uart1_phys = OMAP2_UART1_BASE, - .uart2_phys = OMAP2_UART2_BASE, - .uart3_phys = OMAP2_UART3_BASE, -}; - -void __init omap2_set_globals_242x(void) -{ - __omap2_set_globals(&omap242x_globals); -} -#endif - -#if defined(CONFIG_ARCH_OMAP2430) - -static struct omap_globals omap243x_globals = { - .class = OMAP243X_CLASS, - .tap = OMAP2_L4_IO_ADDRESS(0x4900a000), - .sdrc = OMAP243X_SDRC_BASE, - .sms = OMAP243X_SMS_BASE, - .ctrl = OMAP243X_CTRL_BASE, - .prm = OMAP2430_PRM_BASE, - .cm = OMAP2430_CM_BASE, - .uart1_phys = OMAP2_UART1_BASE, - .uart2_phys = OMAP2_UART2_BASE, - .uart3_phys = OMAP2_UART3_BASE, -}; - -void __init omap2_set_globals_243x(void) -{ - __omap2_set_globals(&omap243x_globals); -} -#endif - -#if defined(CONFIG_ARCH_OMAP3) - -static struct omap_globals omap3_globals = { - .class = OMAP343X_CLASS, - .tap = OMAP2_L4_IO_ADDRESS(0x4830A000), - .sdrc = OMAP343X_SDRC_BASE, - .sms = OMAP343X_SMS_BASE, - .ctrl = OMAP343X_CTRL_BASE, - .prm = OMAP3430_PRM_BASE, - .cm = OMAP3430_CM_BASE, - .uart1_phys = OMAP3_UART1_BASE, - .uart2_phys = OMAP3_UART2_BASE, - .uart3_phys = OMAP3_UART3_BASE, - .uart4_phys = OMAP3_UART4_BASE, /* Only on 3630 */ -}; - -void __init omap2_set_globals_3xxx(void) -{ - __omap2_set_globals(&omap3_globals); -} - -void __init omap3_map_io(void) -{ - omap2_set_globals_3xxx(); - omap34xx_map_common_io(); -} -#endif - -#if defined(CONFIG_ARCH_OMAP4) -static struct omap_globals omap4_globals = { - .class = OMAP443X_CLASS, - .tap = OMAP2_L4_IO_ADDRESS(OMAP443X_SCM_BASE), - .ctrl = OMAP443X_CTRL_BASE, - .prm = OMAP4430_PRM_BASE, - .cm = OMAP4430_CM_BASE, - .cm2 = OMAP4430_CM2_BASE, - .uart1_phys = OMAP4_UART1_BASE, - .uart2_phys = OMAP4_UART2_BASE, - .uart3_phys = OMAP4_UART3_BASE, - .uart4_phys = OMAP4_UART4_BASE, -}; - -void __init omap2_set_globals_443x(void) -{ - omap2_set_globals_tap(&omap4_globals); - omap2_set_globals_control(&omap4_globals); - omap2_set_globals_prcm(&omap4_globals); - omap2_set_globals_uart(&omap4_globals); -} -#endif - diff --cc drivers/misc/Makefile index 4be5c6fc5ef4,ab3353a597d8..47af4cd08f01 --- a/drivers/misc/Makefile +++ b/drivers/misc/Makefile @@@ -37,6 -33,6 +37,7 @@@ obj-$(CONFIG_IWMC3200TOP) += iwmc3 obj-$(CONFIG_HMC6352) += hmc6352.o obj-y += eeprom/ obj-y += cb710/ -obj-$(CONFIG_VMWARE_BALLOON) += vmware_balloon.o +obj-$(CONFIG_VMWARE_BALLOON) += vmw_balloon.o obj-$(CONFIG_ARM_CHARLCD) += arm-charlcd.o +obj-$(CONFIG_PCH_PHUB) += pch_phub.o + obj-y += ti-st/ diff --cc drivers/staging/autofs/Kconfig index 000000000000,5f3bea90911e..480e210c83ab mode 000000,100644..100644 --- a/drivers/staging/autofs/Kconfig +++ b/drivers/staging/autofs/Kconfig @@@ -1,0 -1,21 +1,22 @@@ + config AUTOFS_FS + tristate "Kernel automounter support" ++ depends on BKL # unfixable, just use autofs4 + help + The automounter is a tool to automatically mount remote file systems + on demand. This implementation is partially kernel-based to reduce + overhead in the already-mounted case; this is unlike the BSD + automounter (amd), which is a pure user space daemon. + + To use the automounter you need the user-space tools from the autofs + package; you can find the location in . + You also want to answer Y to "NFS file system support", below. + + If you want to use the newer version of the automounter with more + features, say N here and say Y to "Kernel automounter v4 support", + below. + + To compile this support as a module, choose M here: the module will be + called autofs. + + If you are not a part of a fairly large, distributed network, you + probably do not need an automounter, and can say N here. diff --cc drivers/staging/autofs/root.c index 000000000000,70210aa0692a..0fdec4befd84 mode 000000,100644..100644 --- a/drivers/staging/autofs/root.c +++ b/drivers/staging/autofs/root.c @@@ -1,0 -1,643 +1,645 @@@ + /* -*- linux-c -*- --------------------------------------------------------- * + * + * drivers/staging/autofs/root.c + * + * Copyright 1997-1998 Transmeta Corporation -- All Rights Reserved + * + * This file is part of the Linux kernel and is made available under + * the terms of the GNU General Public License, version 2, or at your + * option, any later version, incorporated herein by reference. + * + * ------------------------------------------------------------------------- */ + + #include + #include + #include + #include + #include + #include + #include + #include + #include "autofs_i.h" + + static int autofs_root_readdir(struct file *,void *,filldir_t); + static struct dentry *autofs_root_lookup(struct inode *,struct dentry *, struct nameidata *); + static int autofs_root_symlink(struct inode *,struct dentry *,const char *); + static int autofs_root_unlink(struct inode *,struct dentry *); + static int autofs_root_rmdir(struct inode *,struct dentry *); + static int autofs_root_mkdir(struct inode *,struct dentry *,int); + static long autofs_root_ioctl(struct file *,unsigned int,unsigned long); ++#ifdef CONFIG_COMPAT + static long autofs_root_compat_ioctl(struct file *,unsigned int,unsigned long); ++#endif + + const struct file_operations autofs_root_operations = { + .llseek = generic_file_llseek, + .read = generic_read_dir, + .readdir = autofs_root_readdir, + .unlocked_ioctl = autofs_root_ioctl, + #ifdef CONFIG_COMPAT + .compat_ioctl = autofs_root_compat_ioctl, + #endif + }; + + const struct inode_operations autofs_root_inode_operations = { + .lookup = autofs_root_lookup, + .unlink = autofs_root_unlink, + .symlink = autofs_root_symlink, + .mkdir = autofs_root_mkdir, + .rmdir = autofs_root_rmdir, + }; + + static int autofs_root_readdir(struct file *filp, void *dirent, filldir_t filldir) + { + struct autofs_dir_ent *ent = NULL; + struct autofs_dirhash *dirhash; + struct autofs_sb_info *sbi; + struct inode * inode = filp->f_path.dentry->d_inode; + off_t onr, nr; + + lock_kernel(); + + sbi = autofs_sbi(inode->i_sb); + dirhash = &sbi->dirhash; + nr = filp->f_pos; + + switch(nr) + { + case 0: + if (filldir(dirent, ".", 1, nr, inode->i_ino, DT_DIR) < 0) + goto out; + filp->f_pos = ++nr; + /* fall through */ + case 1: + if (filldir(dirent, "..", 2, nr, inode->i_ino, DT_DIR) < 0) + goto out; + filp->f_pos = ++nr; + /* fall through */ + default: + while (onr = nr, ent = autofs_hash_enum(dirhash,&nr,ent)) { + if (!ent->dentry || d_mountpoint(ent->dentry)) { + if (filldir(dirent,ent->name,ent->len,onr,ent->ino,DT_UNKNOWN) < 0) + goto out; + filp->f_pos = nr; + } + } + break; + } + + out: + unlock_kernel(); + return 0; + } + + static int try_to_fill_dentry(struct dentry *dentry, struct super_block *sb, struct autofs_sb_info *sbi) + { + struct inode * inode; + struct autofs_dir_ent *ent; + int status = 0; + + if (!(ent = autofs_hash_lookup(&sbi->dirhash, &dentry->d_name))) { + do { + if (status && dentry->d_inode) { + if (status != -ENOENT) + printk("autofs warning: lookup failure on positive dentry, status = %d, name = %s\n", status, dentry->d_name.name); + return 0; /* Try to get the kernel to invalidate this dentry */ + } + + /* Turn this into a real negative dentry? */ + if (status == -ENOENT) { + dentry->d_time = jiffies + AUTOFS_NEGATIVE_TIMEOUT; + dentry->d_flags &= ~DCACHE_AUTOFS_PENDING; + return 1; + } else if (status) { + /* Return a negative dentry, but leave it "pending" */ + return 1; + } + status = autofs_wait(sbi, &dentry->d_name); + } while (!(ent = autofs_hash_lookup(&sbi->dirhash, &dentry->d_name))); + } + + /* Abuse this field as a pointer to the directory entry, used to + find the expire list pointers */ + dentry->d_time = (unsigned long) ent; + + if (!dentry->d_inode) { + inode = autofs_iget(sb, ent->ino); + if (IS_ERR(inode)) { + /* Failed, but leave pending for next time */ + return 1; + } + dentry->d_inode = inode; + } + + /* If this is a directory that isn't a mount point, bitch at the + daemon and fix it in user space */ + if (S_ISDIR(dentry->d_inode->i_mode) && !d_mountpoint(dentry)) { + return !autofs_wait(sbi, &dentry->d_name); + } + + /* We don't update the usages for the autofs daemon itself, this + is necessary for recursive autofs mounts */ + if (!autofs_oz_mode(sbi)) { + autofs_update_usage(&sbi->dirhash,ent); + } + + dentry->d_flags &= ~DCACHE_AUTOFS_PENDING; + return 1; + } + + + /* + * Revalidate is called on every cache lookup. Some of those + * cache lookups may actually happen while the dentry is not + * yet completely filled in, and revalidate has to delay such + * lookups.. + */ + static int autofs_revalidate(struct dentry * dentry, struct nameidata *nd) + { + struct inode * dir; + struct autofs_sb_info *sbi; + struct autofs_dir_ent *ent; + int res; + + lock_kernel(); + dir = dentry->d_parent->d_inode; + sbi = autofs_sbi(dir->i_sb); + + /* Pending dentry */ + if (dentry->d_flags & DCACHE_AUTOFS_PENDING) { + if (autofs_oz_mode(sbi)) + res = 1; + else + res = try_to_fill_dentry(dentry, dir->i_sb, sbi); + unlock_kernel(); + return res; + } + + /* Negative dentry.. invalidate if "old" */ + if (!dentry->d_inode) { + unlock_kernel(); + return (dentry->d_time - jiffies <= AUTOFS_NEGATIVE_TIMEOUT); + } + + /* Check for a non-mountpoint directory */ + if (S_ISDIR(dentry->d_inode->i_mode) && !d_mountpoint(dentry)) { + if (autofs_oz_mode(sbi)) + res = 1; + else + res = try_to_fill_dentry(dentry, dir->i_sb, sbi); + unlock_kernel(); + return res; + } + + /* Update the usage list */ + if (!autofs_oz_mode(sbi)) { + ent = (struct autofs_dir_ent *) dentry->d_time; + if (ent) + autofs_update_usage(&sbi->dirhash,ent); + } + unlock_kernel(); + return 1; + } + + static const struct dentry_operations autofs_dentry_operations = { + .d_revalidate = autofs_revalidate, + }; + + static struct dentry *autofs_root_lookup(struct inode *dir, struct dentry *dentry, struct nameidata *nd) + { + struct autofs_sb_info *sbi; + int oz_mode; + + DPRINTK(("autofs_root_lookup: name = ")); + lock_kernel(); + autofs_say(dentry->d_name.name,dentry->d_name.len); + + if (dentry->d_name.len > NAME_MAX) { + unlock_kernel(); + return ERR_PTR(-ENAMETOOLONG);/* File name too long to exist */ + } + + sbi = autofs_sbi(dir->i_sb); + + oz_mode = autofs_oz_mode(sbi); + DPRINTK(("autofs_lookup: pid = %u, pgrp = %u, catatonic = %d, " + "oz_mode = %d\n", task_pid_nr(current), + task_pgrp_nr(current), sbi->catatonic, + oz_mode)); + + /* + * Mark the dentry incomplete, but add it. This is needed so + * that the VFS layer knows about the dentry, and we can count + * on catching any lookups through the revalidate. + * + * Let all the hard work be done by the revalidate function that + * needs to be able to do this anyway.. + * + * We need to do this before we release the directory semaphore. + */ + dentry->d_op = &autofs_dentry_operations; + dentry->d_flags |= DCACHE_AUTOFS_PENDING; + d_add(dentry, NULL); + + mutex_unlock(&dir->i_mutex); + autofs_revalidate(dentry, nd); + mutex_lock(&dir->i_mutex); + + /* + * If we are still pending, check if we had to handle + * a signal. If so we can force a restart.. + */ + if (dentry->d_flags & DCACHE_AUTOFS_PENDING) { + /* See if we were interrupted */ + if (signal_pending(current)) { + sigset_t *sigset = ¤t->pending.signal; + if (sigismember (sigset, SIGKILL) || + sigismember (sigset, SIGQUIT) || + sigismember (sigset, SIGINT)) { + unlock_kernel(); + return ERR_PTR(-ERESTARTNOINTR); + } + } + } + unlock_kernel(); + + /* + * If this dentry is unhashed, then we shouldn't honour this + * lookup even if the dentry is positive. Returning ENOENT here + * doesn't do the right thing for all system calls, but it should + * be OK for the operations we permit from an autofs. + */ + if (dentry->d_inode && d_unhashed(dentry)) + return ERR_PTR(-ENOENT); + + return NULL; + } + + static int autofs_root_symlink(struct inode *dir, struct dentry *dentry, const char *symname) + { + struct autofs_sb_info *sbi = autofs_sbi(dir->i_sb); + struct autofs_dirhash *dh = &sbi->dirhash; + struct autofs_dir_ent *ent; + unsigned int n; + int slsize; + struct autofs_symlink *sl; + struct inode *inode; + + DPRINTK(("autofs_root_symlink: %s <- ", symname)); + autofs_say(dentry->d_name.name,dentry->d_name.len); + + lock_kernel(); + if (!autofs_oz_mode(sbi)) { + unlock_kernel(); + return -EACCES; + } + + if (autofs_hash_lookup(dh, &dentry->d_name)) { + unlock_kernel(); + return -EEXIST; + } + + n = find_first_zero_bit(sbi->symlink_bitmap,AUTOFS_MAX_SYMLINKS); + if (n >= AUTOFS_MAX_SYMLINKS) { + unlock_kernel(); + return -ENOSPC; + } + + set_bit(n,sbi->symlink_bitmap); + sl = &sbi->symlink[n]; + sl->len = strlen(symname); + sl->data = kmalloc(slsize = sl->len+1, GFP_KERNEL); + if (!sl->data) { + clear_bit(n,sbi->symlink_bitmap); + unlock_kernel(); + return -ENOSPC; + } + + ent = kmalloc(sizeof(struct autofs_dir_ent), GFP_KERNEL); + if (!ent) { + kfree(sl->data); + clear_bit(n,sbi->symlink_bitmap); + unlock_kernel(); + return -ENOSPC; + } + + ent->name = kmalloc(dentry->d_name.len+1, GFP_KERNEL); + if (!ent->name) { + kfree(sl->data); + kfree(ent); + clear_bit(n,sbi->symlink_bitmap); + unlock_kernel(); + return -ENOSPC; + } + + memcpy(sl->data,symname,slsize); + sl->mtime = get_seconds(); + + ent->ino = AUTOFS_FIRST_SYMLINK + n; + ent->hash = dentry->d_name.hash; + memcpy(ent->name, dentry->d_name.name, 1+(ent->len = dentry->d_name.len)); + ent->dentry = NULL; /* We don't keep the dentry for symlinks */ + + autofs_hash_insert(dh,ent); + + inode = autofs_iget(dir->i_sb, ent->ino); + if (IS_ERR(inode)) + return PTR_ERR(inode); + + d_instantiate(dentry, inode); + unlock_kernel(); + return 0; + } + + /* + * NOTE! + * + * Normal filesystems would do a "d_delete()" to tell the VFS dcache + * that the file no longer exists. However, doing that means that the + * VFS layer can turn the dentry into a negative dentry, which we + * obviously do not want (we're dropping the entry not because it + * doesn't exist, but because it has timed out). + * + * Also see autofs_root_rmdir().. + */ + static int autofs_root_unlink(struct inode *dir, struct dentry *dentry) + { + struct autofs_sb_info *sbi = autofs_sbi(dir->i_sb); + struct autofs_dirhash *dh = &sbi->dirhash; + struct autofs_dir_ent *ent; + unsigned int n; + + /* This allows root to remove symlinks */ + lock_kernel(); + if (!autofs_oz_mode(sbi) && !capable(CAP_SYS_ADMIN)) { + unlock_kernel(); + return -EACCES; + } + + ent = autofs_hash_lookup(dh, &dentry->d_name); + if (!ent) { + unlock_kernel(); + return -ENOENT; + } + + n = ent->ino - AUTOFS_FIRST_SYMLINK; + if (n >= AUTOFS_MAX_SYMLINKS) { + unlock_kernel(); + return -EISDIR; /* It's a directory, dummy */ + } + if (!test_bit(n,sbi->symlink_bitmap)) { + unlock_kernel(); + return -EINVAL; /* Nonexistent symlink? Shouldn't happen */ + } + + dentry->d_time = (unsigned long)(struct autofs_dirhash *)NULL; + autofs_hash_delete(ent); + clear_bit(n,sbi->symlink_bitmap); + kfree(sbi->symlink[n].data); + d_drop(dentry); + + unlock_kernel(); + return 0; + } + + static int autofs_root_rmdir(struct inode *dir, struct dentry *dentry) + { + struct autofs_sb_info *sbi = autofs_sbi(dir->i_sb); + struct autofs_dirhash *dh = &sbi->dirhash; + struct autofs_dir_ent *ent; + + lock_kernel(); + if (!autofs_oz_mode(sbi)) { + unlock_kernel(); + return -EACCES; + } + + ent = autofs_hash_lookup(dh, &dentry->d_name); + if (!ent) { + unlock_kernel(); + return -ENOENT; + } + + if ((unsigned int)ent->ino < AUTOFS_FIRST_DIR_INO) { + unlock_kernel(); + return -ENOTDIR; /* Not a directory */ + } + + if (ent->dentry != dentry) { + printk("autofs_rmdir: odentry != dentry for entry %s\n", dentry->d_name.name); + } + + dentry->d_time = (unsigned long)(struct autofs_dir_ent *)NULL; + autofs_hash_delete(ent); + drop_nlink(dir); + d_drop(dentry); + unlock_kernel(); + + return 0; + } + + static int autofs_root_mkdir(struct inode *dir, struct dentry *dentry, int mode) + { + struct autofs_sb_info *sbi = autofs_sbi(dir->i_sb); + struct autofs_dirhash *dh = &sbi->dirhash; + struct autofs_dir_ent *ent; + struct inode *inode; + ino_t ino; + + lock_kernel(); + if (!autofs_oz_mode(sbi)) { + unlock_kernel(); + return -EACCES; + } + + ent = autofs_hash_lookup(dh, &dentry->d_name); + if (ent) { + unlock_kernel(); + return -EEXIST; + } + + if (sbi->next_dir_ino < AUTOFS_FIRST_DIR_INO) { + printk("autofs: Out of inode numbers -- what the heck did you do??\n"); + unlock_kernel(); + return -ENOSPC; + } + ino = sbi->next_dir_ino++; + + ent = kmalloc(sizeof(struct autofs_dir_ent), GFP_KERNEL); + if (!ent) { + unlock_kernel(); + return -ENOSPC; + } + + ent->name = kmalloc(dentry->d_name.len+1, GFP_KERNEL); + if (!ent->name) { + kfree(ent); + unlock_kernel(); + return -ENOSPC; + } + + ent->hash = dentry->d_name.hash; + memcpy(ent->name, dentry->d_name.name, 1+(ent->len = dentry->d_name.len)); + ent->ino = ino; + ent->dentry = dentry; + autofs_hash_insert(dh,ent); + + inc_nlink(dir); + + inode = autofs_iget(dir->i_sb, ino); + if (IS_ERR(inode)) { + drop_nlink(dir); + return PTR_ERR(inode); + } + + d_instantiate(dentry, inode); + unlock_kernel(); + + return 0; + } + + /* Get/set timeout ioctl() operation */ + #ifdef CONFIG_COMPAT + static inline int autofs_compat_get_set_timeout(struct autofs_sb_info *sbi, + unsigned int __user *p) + { + unsigned long ntimeout; + + if (get_user(ntimeout, p) || + put_user(sbi->exp_timeout / HZ, p)) + return -EFAULT; + + if (ntimeout > UINT_MAX/HZ) + sbi->exp_timeout = 0; + else + sbi->exp_timeout = ntimeout * HZ; + + return 0; + } + #endif + + static inline int autofs_get_set_timeout(struct autofs_sb_info *sbi, + unsigned long __user *p) + { + unsigned long ntimeout; + + if (get_user(ntimeout, p) || + put_user(sbi->exp_timeout / HZ, p)) + return -EFAULT; + + if (ntimeout > ULONG_MAX/HZ) + sbi->exp_timeout = 0; + else + sbi->exp_timeout = ntimeout * HZ; + + return 0; + } + + /* Return protocol version */ + static inline int autofs_get_protover(int __user *p) + { + return put_user(AUTOFS_PROTO_VERSION, p); + } + + /* Perform an expiry operation */ + static inline int autofs_expire_run(struct super_block *sb, + struct autofs_sb_info *sbi, + struct vfsmount *mnt, + struct autofs_packet_expire __user *pkt_p) + { + struct autofs_dir_ent *ent; + struct autofs_packet_expire pkt; + + memset(&pkt,0,sizeof pkt); + + pkt.hdr.proto_version = AUTOFS_PROTO_VERSION; + pkt.hdr.type = autofs_ptype_expire; + + if (!sbi->exp_timeout || !(ent = autofs_expire(sb,sbi,mnt))) + return -EAGAIN; + + pkt.len = ent->len; + memcpy(pkt.name, ent->name, pkt.len); + pkt.name[pkt.len] = '\0'; + + if (copy_to_user(pkt_p, &pkt, sizeof(struct autofs_packet_expire))) + return -EFAULT; + + return 0; + } + + /* + * ioctl()'s on the root directory is the chief method for the daemon to + * generate kernel reactions + */ + static int autofs_do_root_ioctl(struct inode *inode, struct file *filp, + unsigned int cmd, unsigned long arg) + { + struct autofs_sb_info *sbi = autofs_sbi(inode->i_sb); + void __user *argp = (void __user *)arg; + + DPRINTK(("autofs_ioctl: cmd = 0x%08x, arg = 0x%08lx, sbi = %p, pgrp = %u\n",cmd,arg,sbi,task_pgrp_nr(current))); + + if (_IOC_TYPE(cmd) != _IOC_TYPE(AUTOFS_IOC_FIRST) || + _IOC_NR(cmd) - _IOC_NR(AUTOFS_IOC_FIRST) >= AUTOFS_IOC_COUNT) + return -ENOTTY; + + if (!autofs_oz_mode(sbi) && !capable(CAP_SYS_ADMIN)) + return -EPERM; + + switch(cmd) { + case AUTOFS_IOC_READY: /* Wait queue: go ahead and retry */ + return autofs_wait_release(sbi,(autofs_wqt_t)arg,0); + case AUTOFS_IOC_FAIL: /* Wait queue: fail with ENOENT */ + return autofs_wait_release(sbi,(autofs_wqt_t)arg,-ENOENT); + case AUTOFS_IOC_CATATONIC: /* Enter catatonic mode (daemon shutdown) */ + autofs_catatonic_mode(sbi); + return 0; + case AUTOFS_IOC_PROTOVER: /* Get protocol version */ + return autofs_get_protover(argp); + #ifdef CONFIG_COMPAT + case AUTOFS_IOC_SETTIMEOUT32: + return autofs_compat_get_set_timeout(sbi, argp); + #endif + case AUTOFS_IOC_SETTIMEOUT: + return autofs_get_set_timeout(sbi, argp); + case AUTOFS_IOC_EXPIRE: + return autofs_expire_run(inode->i_sb, sbi, filp->f_path.mnt, + argp); + default: + return -ENOSYS; + } + + } + + static long autofs_root_ioctl(struct file *filp, + unsigned int cmd, unsigned long arg) + { + int ret; + + lock_kernel(); + ret = autofs_do_root_ioctl(filp->f_path.dentry->d_inode, + filp, cmd, arg); + unlock_kernel(); + + return ret; + } + + #ifdef CONFIG_COMPAT + static long autofs_root_compat_ioctl(struct file *filp, + unsigned int cmd, unsigned long arg) + { + struct inode *inode = filp->f_path.dentry->d_inode; + int ret; + + lock_kernel(); + if (cmd == AUTOFS_IOC_READY || cmd == AUTOFS_IOC_FAIL) + ret = autofs_do_root_ioctl(inode, filp, cmd, arg); + else + ret = autofs_do_root_ioctl(inode, filp, cmd, + (unsigned long)compat_ptr(arg)); + unlock_kernel(); + + return ret; + } + #endif diff --cc drivers/staging/smbfs/Kconfig index 000000000000,e668127c8b2e..2bc24a8c4039 mode 000000,100644..100644 --- a/drivers/staging/smbfs/Kconfig +++ b/drivers/staging/smbfs/Kconfig @@@ -1,0 -1,55 +1,56 @@@ + config SMB_FS + tristate "SMB file system support (OBSOLETE, please use CIFS)" ++ depends on BKL # probably unfixable + depends on INET + select NLS + help + SMB (Server Message Block) is the protocol Windows for Workgroups + (WfW), Windows 95/98, Windows NT and OS/2 Lan Manager use to share + files and printers over local networks. Saying Y here allows you to + mount their file systems (often called "shares" in this context) and + access them just like any other Unix directory. Currently, this + works only if the Windows machines use TCP/IP as the underlying + transport protocol, and not NetBEUI. For details, read + and the SMB-HOWTO, + available from . + + Note: if you just want your box to act as an SMB *server* and make + files and printing services available to Windows clients (which need + to have a TCP/IP stack), you don't need to say Y here; you can use + the program SAMBA (available from ) + for that. + + General information about how to connect Linux, Windows machines and + Macs is on the WWW at . + + To compile the SMB support as a module, choose M here: + the module will be called smbfs. Most people say N, however. + + config SMB_NLS_DEFAULT + bool "Use a default NLS" + depends on SMB_FS + help + Enabling this will make smbfs use nls translations by default. You + need to specify the local charset (CONFIG_NLS_DEFAULT) in the nls + settings and you need to give the default nls for the SMB server as + CONFIG_SMB_NLS_REMOTE. + + The nls settings can be changed at mount time, if your smbmount + supports that, using the codepage and iocharset parameters. + + smbmount from samba 2.2.0 or later supports this. + + config SMB_NLS_REMOTE + string "Default Remote NLS Option" + depends on SMB_NLS_DEFAULT + default "cp437" + help + This setting allows you to specify a default value for which + codepage the server uses. If this field is left blank no + translations will be done by default. The local codepage/charset + default to CONFIG_NLS_DEFAULT. + + The nls settings can be changed at mount time, if your smbmount + supports that, using the codepage and iocharset parameters. + + smbmount from samba 2.2.0 or later supports this. diff --cc drivers/staging/smbfs/dir.c index 000000000000,936b3bb2099c..f088ea2f6ac9 mode 000000,100644..100644 --- a/drivers/staging/smbfs/dir.c +++ b/drivers/staging/smbfs/dir.c @@@ -1,0 -1,702 +1,696 @@@ + /* + * dir.c + * + * Copyright (C) 1995, 1996 by Paal-Kr. Engstad and Volker Lendecke + * Copyright (C) 1997 by Volker Lendecke + * + * Please add a note about your changes to smbfs in the ChangeLog file. + */ + + #include + #include + #include + #include + #include + #include + #include + + #include "smb_fs.h" + #include "smb_mount.h" + #include "smbno.h" + + #include "smb_debug.h" + #include "proto.h" + + static int smb_readdir(struct file *, void *, filldir_t); + static int smb_dir_open(struct inode *, struct file *); + + static struct dentry *smb_lookup(struct inode *, struct dentry *, struct nameidata *); + static int smb_create(struct inode *, struct dentry *, int, struct nameidata *); + static int smb_mkdir(struct inode *, struct dentry *, int); + static int smb_rmdir(struct inode *, struct dentry *); + static int smb_unlink(struct inode *, struct dentry *); + static int smb_rename(struct inode *, struct dentry *, + struct inode *, struct dentry *); + static int smb_make_node(struct inode *,struct dentry *,int,dev_t); + static int smb_link(struct dentry *, struct inode *, struct dentry *); + + const struct file_operations smb_dir_operations = + { + .llseek = generic_file_llseek, + .read = generic_read_dir, + .readdir = smb_readdir, + .unlocked_ioctl = smb_ioctl, + .open = smb_dir_open, + }; + + const struct inode_operations smb_dir_inode_operations = + { + .create = smb_create, + .lookup = smb_lookup, + .unlink = smb_unlink, + .mkdir = smb_mkdir, + .rmdir = smb_rmdir, + .rename = smb_rename, + .getattr = smb_getattr, + .setattr = smb_notify_change, + }; + + const struct inode_operations smb_dir_inode_operations_unix = + { + .create = smb_create, + .lookup = smb_lookup, + .unlink = smb_unlink, + .mkdir = smb_mkdir, + .rmdir = smb_rmdir, + .rename = smb_rename, + .getattr = smb_getattr, + .setattr = smb_notify_change, + .symlink = smb_symlink, + .mknod = smb_make_node, + .link = smb_link, + }; + + /* + * Read a directory, using filldir to fill the dirent memory. + * smb_proc_readdir does the actual reading from the smb server. + * + * The cache code is almost directly taken from ncpfs + */ + static int + smb_readdir(struct file *filp, void *dirent, filldir_t filldir) + { + struct dentry *dentry = filp->f_path.dentry; + struct inode *dir = dentry->d_inode; + struct smb_sb_info *server = server_from_dentry(dentry); + union smb_dir_cache *cache = NULL; + struct smb_cache_control ctl; + struct page *page = NULL; + int result; + + ctl.page = NULL; + ctl.cache = NULL; + + VERBOSE("reading %s/%s, f_pos=%d\n", + DENTRY_PATH(dentry), (int) filp->f_pos); + + result = 0; + + lock_kernel(); + + switch ((unsigned int) filp->f_pos) { + case 0: + if (filldir(dirent, ".", 1, 0, dir->i_ino, DT_DIR) < 0) + goto out; + filp->f_pos = 1; + /* fallthrough */ + case 1: + if (filldir(dirent, "..", 2, 1, parent_ino(dentry), DT_DIR) < 0) + goto out; + filp->f_pos = 2; + } + + /* + * Make sure our inode is up-to-date. + */ + result = smb_revalidate_inode(dentry); + if (result) + goto out; + + + page = grab_cache_page(&dir->i_data, 0); + if (!page) + goto read_really; + + ctl.cache = cache = kmap(page); + ctl.head = cache->head; + + if (!PageUptodate(page) || !ctl.head.eof) { + VERBOSE("%s/%s, page uptodate=%d, eof=%d\n", + DENTRY_PATH(dentry), PageUptodate(page),ctl.head.eof); + goto init_cache; + } + + if (filp->f_pos == 2) { + if (jiffies - ctl.head.time >= SMB_MAX_AGE(server)) + goto init_cache; + + /* + * N.B. ncpfs checks mtime of dentry too here, we don't. + * 1. common smb servers do not update mtime on dir changes + * 2. it requires an extra smb request + * (revalidate has the same timeout as ctl.head.time) + * + * Instead smbfs invalidates its own cache on local changes + * and remote changes are not seen until timeout. + */ + } + + if (filp->f_pos > ctl.head.end) + goto finished; + + ctl.fpos = filp->f_pos + (SMB_DIRCACHE_START - 2); + ctl.ofs = ctl.fpos / SMB_DIRCACHE_SIZE; + ctl.idx = ctl.fpos % SMB_DIRCACHE_SIZE; + + for (;;) { + if (ctl.ofs != 0) { + ctl.page = find_lock_page(&dir->i_data, ctl.ofs); + if (!ctl.page) + goto invalid_cache; + ctl.cache = kmap(ctl.page); + if (!PageUptodate(ctl.page)) + goto invalid_cache; + } + while (ctl.idx < SMB_DIRCACHE_SIZE) { + struct dentry *dent; + int res; + + dent = smb_dget_fpos(ctl.cache->dentry[ctl.idx], + dentry, filp->f_pos); + if (!dent) + goto invalid_cache; + + res = filldir(dirent, dent->d_name.name, + dent->d_name.len, filp->f_pos, + dent->d_inode->i_ino, DT_UNKNOWN); + dput(dent); + if (res) + goto finished; + filp->f_pos += 1; + ctl.idx += 1; + if (filp->f_pos > ctl.head.end) + goto finished; + } + if (ctl.page) { + kunmap(ctl.page); + SetPageUptodate(ctl.page); + unlock_page(ctl.page); + page_cache_release(ctl.page); + ctl.page = NULL; + } + ctl.idx = 0; + ctl.ofs += 1; + } + invalid_cache: + if (ctl.page) { + kunmap(ctl.page); + unlock_page(ctl.page); + page_cache_release(ctl.page); + ctl.page = NULL; + } + ctl.cache = cache; + init_cache: + smb_invalidate_dircache_entries(dentry); + ctl.head.time = jiffies; + ctl.head.eof = 0; + ctl.fpos = 2; + ctl.ofs = 0; + ctl.idx = SMB_DIRCACHE_START; + ctl.filled = 0; + ctl.valid = 1; + read_really: + result = server->ops->readdir(filp, dirent, filldir, &ctl); + if (result == -ERESTARTSYS && page) + ClearPageUptodate(page); + if (ctl.idx == -1) + goto invalid_cache; /* retry */ + ctl.head.end = ctl.fpos - 1; + ctl.head.eof = ctl.valid; + finished: + if (page) { + cache->head = ctl.head; + kunmap(page); + if (result != -ERESTARTSYS) + SetPageUptodate(page); + unlock_page(page); + page_cache_release(page); + } + if (ctl.page) { + kunmap(ctl.page); + SetPageUptodate(ctl.page); + unlock_page(ctl.page); + page_cache_release(ctl.page); + } + out: + unlock_kernel(); + return result; + } + + static int + smb_dir_open(struct inode *dir, struct file *file) + { + struct dentry *dentry = file->f_path.dentry; + struct smb_sb_info *server; + int error = 0; + + VERBOSE("(%s/%s)\n", dentry->d_parent->d_name.name, + file->f_path.dentry->d_name.name); + + /* + * Directory timestamps in the core protocol aren't updated + * when a file is added, so we give them a very short TTL. + */ + lock_kernel(); + server = server_from_dentry(dentry); + if (server->opt.protocol < SMB_PROTOCOL_LANMAN2) { + unsigned long age = jiffies - SMB_I(dir)->oldmtime; + if (age > 2*HZ) + smb_invalid_dir_cache(dir); + } + + /* + * Note: in order to allow the smbmount process to open the + * mount point, we only revalidate if the connection is valid or + * if the process is trying to access something other than the root. + */ + if (server->state == CONN_VALID || !IS_ROOT(dentry)) + error = smb_revalidate_inode(dentry); + unlock_kernel(); + return error; + } + + /* + * Dentry operations routines + */ + static int smb_lookup_validate(struct dentry *, struct nameidata *); + static int smb_hash_dentry(struct dentry *, struct qstr *); + static int smb_compare_dentry(struct dentry *, struct qstr *, struct qstr *); + static int smb_delete_dentry(struct dentry *); + + static const struct dentry_operations smbfs_dentry_operations = + { + .d_revalidate = smb_lookup_validate, + .d_hash = smb_hash_dentry, + .d_compare = smb_compare_dentry, + .d_delete = smb_delete_dentry, + }; + + static const struct dentry_operations smbfs_dentry_operations_case = + { + .d_revalidate = smb_lookup_validate, + .d_delete = smb_delete_dentry, + }; + + + /* + * This is the callback when the dcache has a lookup hit. + */ + static int + smb_lookup_validate(struct dentry * dentry, struct nameidata *nd) + { + struct smb_sb_info *server = server_from_dentry(dentry); + struct inode * inode = dentry->d_inode; + unsigned long age = jiffies - dentry->d_time; + int valid; + + /* + * The default validation is based on dentry age: + * we believe in dentries for a few seconds. (But each + * successful server lookup renews the timestamp.) + */ + valid = (age <= SMB_MAX_AGE(server)); + #ifdef SMBFS_DEBUG_VERBOSE + if (!valid) + VERBOSE("%s/%s not valid, age=%lu\n", + DENTRY_PATH(dentry), age); + #endif + + if (inode) { + lock_kernel(); + if (is_bad_inode(inode)) { + PARANOIA("%s/%s has dud inode\n", DENTRY_PATH(dentry)); + valid = 0; + } else if (!valid) + valid = (smb_revalidate_inode(dentry) == 0); + unlock_kernel(); + } else { + /* + * What should we do for negative dentries? + */ + } + return valid; + } + + static int + smb_hash_dentry(struct dentry *dir, struct qstr *this) + { + unsigned long hash; + int i; + + hash = init_name_hash(); + for (i=0; i < this->len ; i++) + hash = partial_name_hash(tolower(this->name[i]), hash); + this->hash = end_name_hash(hash); + + return 0; + } + + static int + smb_compare_dentry(struct dentry *dir, struct qstr *a, struct qstr *b) + { + int i, result = 1; + + if (a->len != b->len) + goto out; + for (i=0; i < a->len; i++) { + if (tolower(a->name[i]) != tolower(b->name[i])) + goto out; + } + result = 0; + out: + return result; + } + + /* + * This is the callback from dput() when d_count is going to 0. + * We use this to unhash dentries with bad inodes. + */ + static int + smb_delete_dentry(struct dentry * dentry) + { + if (dentry->d_inode) { + if (is_bad_inode(dentry->d_inode)) { + PARANOIA("bad inode, unhashing %s/%s\n", + DENTRY_PATH(dentry)); + return 1; + } + } else { + /* N.B. Unhash negative dentries? */ + } + return 0; + } + + /* + * Initialize a new dentry + */ + void + smb_new_dentry(struct dentry *dentry) + { + struct smb_sb_info *server = server_from_dentry(dentry); + + if (server->mnt->flags & SMB_MOUNT_CASE) + dentry->d_op = &smbfs_dentry_operations_case; + else + dentry->d_op = &smbfs_dentry_operations; + dentry->d_time = jiffies; + } + + + /* + * Whenever a lookup succeeds, we know the parent directories + * are all valid, so we want to update the dentry timestamps. + * N.B. Move this to dcache? + */ + void + smb_renew_times(struct dentry * dentry) + { + dget(dentry); - spin_lock(&dentry->d_lock); - for (;;) { - struct dentry *parent; ++ dentry->d_time = jiffies; + - dentry->d_time = jiffies; - if (IS_ROOT(dentry)) - break; - parent = dentry->d_parent; - dget(parent); - spin_unlock(&dentry->d_lock); ++ while (!IS_ROOT(dentry)) { ++ struct dentry *parent = dget_parent(dentry); + dput(dentry); + dentry = parent; - spin_lock(&dentry->d_lock); ++ ++ dentry->d_time = jiffies; + } - spin_unlock(&dentry->d_lock); + dput(dentry); + } + + static struct dentry * + smb_lookup(struct inode *dir, struct dentry *dentry, struct nameidata *nd) + { + struct smb_fattr finfo; + struct inode *inode; + int error; + struct smb_sb_info *server; + + error = -ENAMETOOLONG; + if (dentry->d_name.len > SMB_MAXNAMELEN) + goto out; + + /* Do not allow lookup of names with backslashes in */ + error = -EINVAL; + if (memchr(dentry->d_name.name, '\\', dentry->d_name.len)) + goto out; + + lock_kernel(); + error = smb_proc_getattr(dentry, &finfo); + #ifdef SMBFS_PARANOIA + if (error && error != -ENOENT) + PARANOIA("find %s/%s failed, error=%d\n", + DENTRY_PATH(dentry), error); + #endif + + inode = NULL; + if (error == -ENOENT) + goto add_entry; + if (!error) { + error = -EACCES; + finfo.f_ino = iunique(dentry->d_sb, 2); + inode = smb_iget(dir->i_sb, &finfo); + if (inode) { + add_entry: + server = server_from_dentry(dentry); + if (server->mnt->flags & SMB_MOUNT_CASE) + dentry->d_op = &smbfs_dentry_operations_case; + else + dentry->d_op = &smbfs_dentry_operations; + + d_add(dentry, inode); + smb_renew_times(dentry); + error = 0; + } + } + unlock_kernel(); + out: + return ERR_PTR(error); + } + + /* + * This code is common to all routines creating a new inode. + */ + static int + smb_instantiate(struct dentry *dentry, __u16 fileid, int have_id) + { + struct smb_sb_info *server = server_from_dentry(dentry); + struct inode *inode; + int error; + struct smb_fattr fattr; + + VERBOSE("file %s/%s, fileid=%u\n", DENTRY_PATH(dentry), fileid); + + error = smb_proc_getattr(dentry, &fattr); + if (error) + goto out_close; + + smb_renew_times(dentry); + fattr.f_ino = iunique(dentry->d_sb, 2); + inode = smb_iget(dentry->d_sb, &fattr); + if (!inode) + goto out_no_inode; + + if (have_id) { + struct smb_inode_info *ei = SMB_I(inode); + ei->fileid = fileid; + ei->access = SMB_O_RDWR; + ei->open = server->generation; + } + d_instantiate(dentry, inode); + out: + return error; + + out_no_inode: + error = -EACCES; + out_close: + if (have_id) { + PARANOIA("%s/%s failed, error=%d, closing %u\n", + DENTRY_PATH(dentry), error, fileid); + smb_close_fileid(dentry, fileid); + } + goto out; + } + + /* N.B. How should the mode argument be used? */ + static int + smb_create(struct inode *dir, struct dentry *dentry, int mode, + struct nameidata *nd) + { + struct smb_sb_info *server = server_from_dentry(dentry); + __u16 fileid; + int error; + struct iattr attr; + + VERBOSE("creating %s/%s, mode=%d\n", DENTRY_PATH(dentry), mode); + + lock_kernel(); + smb_invalid_dir_cache(dir); + error = smb_proc_create(dentry, 0, get_seconds(), &fileid); + if (!error) { + if (server->opt.capabilities & SMB_CAP_UNIX) { + /* Set attributes for new file */ + attr.ia_valid = ATTR_MODE; + attr.ia_mode = mode; + error = smb_proc_setattr_unix(dentry, &attr, 0, 0); + } + error = smb_instantiate(dentry, fileid, 1); + } else { + PARANOIA("%s/%s failed, error=%d\n", + DENTRY_PATH(dentry), error); + } + unlock_kernel(); + return error; + } + + /* N.B. How should the mode argument be used? */ + static int + smb_mkdir(struct inode *dir, struct dentry *dentry, int mode) + { + struct smb_sb_info *server = server_from_dentry(dentry); + int error; + struct iattr attr; + + lock_kernel(); + smb_invalid_dir_cache(dir); + error = smb_proc_mkdir(dentry); + if (!error) { + if (server->opt.capabilities & SMB_CAP_UNIX) { + /* Set attributes for new directory */ + attr.ia_valid = ATTR_MODE; + attr.ia_mode = mode; + error = smb_proc_setattr_unix(dentry, &attr, 0, 0); + } + error = smb_instantiate(dentry, 0, 0); + } + unlock_kernel(); + return error; + } + + static int + smb_rmdir(struct inode *dir, struct dentry *dentry) + { + struct inode *inode = dentry->d_inode; + int error; + + /* + * Close the directory if it's open. + */ + lock_kernel(); + smb_close(inode); + + /* + * Check that nobody else is using the directory.. + */ + error = -EBUSY; + if (!d_unhashed(dentry)) + goto out; + + smb_invalid_dir_cache(dir); + error = smb_proc_rmdir(dentry); + + out: + unlock_kernel(); + return error; + } + + static int + smb_unlink(struct inode *dir, struct dentry *dentry) + { + int error; + + /* + * Close the file if it's open. + */ + lock_kernel(); + smb_close(dentry->d_inode); + + smb_invalid_dir_cache(dir); + error = smb_proc_unlink(dentry); + if (!error) + smb_renew_times(dentry); + unlock_kernel(); + return error; + } + + static int + smb_rename(struct inode *old_dir, struct dentry *old_dentry, + struct inode *new_dir, struct dentry *new_dentry) + { + int error; + + /* + * Close any open files, and check whether to delete the + * target before attempting the rename. + */ + lock_kernel(); + if (old_dentry->d_inode) + smb_close(old_dentry->d_inode); + if (new_dentry->d_inode) { + smb_close(new_dentry->d_inode); + error = smb_proc_unlink(new_dentry); + if (error) { + VERBOSE("unlink %s/%s, error=%d\n", + DENTRY_PATH(new_dentry), error); + goto out; + } + /* FIXME */ + d_delete(new_dentry); + } + + smb_invalid_dir_cache(old_dir); + smb_invalid_dir_cache(new_dir); + error = smb_proc_mv(old_dentry, new_dentry); + if (!error) { + smb_renew_times(old_dentry); + smb_renew_times(new_dentry); + } + out: + unlock_kernel(); + return error; + } + + /* + * FIXME: samba servers won't let you create device nodes unless uid/gid + * matches the connection credentials (and we don't know which those are ...) + */ + static int + smb_make_node(struct inode *dir, struct dentry *dentry, int mode, dev_t dev) + { + int error; + struct iattr attr; + + attr.ia_valid = ATTR_MODE | ATTR_UID | ATTR_GID; + attr.ia_mode = mode; + current_euid_egid(&attr.ia_uid, &attr.ia_gid); + + if (!new_valid_dev(dev)) + return -EINVAL; + + smb_invalid_dir_cache(dir); + error = smb_proc_setattr_unix(dentry, &attr, MAJOR(dev), MINOR(dev)); + if (!error) { + error = smb_instantiate(dentry, 0, 0); + } + return error; + } + + /* + * dentry = existing file + * new_dentry = new file + */ + static int + smb_link(struct dentry *dentry, struct inode *dir, struct dentry *new_dentry) + { + int error; + + DEBUG1("smb_link old=%s/%s new=%s/%s\n", + DENTRY_PATH(dentry), DENTRY_PATH(new_dentry)); + smb_invalid_dir_cache(dir); + error = smb_proc_link(server_from_dentry(dentry), dentry, new_dentry); + if (!error) { + smb_renew_times(dentry); + error = smb_instantiate(new_dentry, 0, 0); + } + return error; + } diff --cc drivers/staging/smbfs/inode.c index 000000000000,9287599ddb50..552951aa7498 mode 000000,100644..100644 --- a/drivers/staging/smbfs/inode.c +++ b/drivers/staging/smbfs/inode.c @@@ -1,0 -1,839 +1,843 @@@ + /* + * inode.c + * + * Copyright (C) 1995, 1996 by Paal-Kr. Engstad and Volker Lendecke + * Copyright (C) 1997 by Volker Lendecke + * + * Please add a note about your changes to smbfs in the ChangeLog file. + */ + + #include + #include + #include + #include + #include + #include + #include + #include + #include + #include + #include + #include + #include + #include + #include + #include + #include + #include + #include + + #include + #include + + #include "smb_fs.h" + #include "smbno.h" + #include "smb_mount.h" + #include "smb_debug.h" + #include "getopt.h" + #include "proto.h" + + /* Always pick a default string */ + #ifdef CONFIG_SMB_NLS_REMOTE + #define SMB_NLS_REMOTE CONFIG_SMB_NLS_REMOTE + #else + #define SMB_NLS_REMOTE "" + #endif + + #define SMB_TTL_DEFAULT 1000 + + static void smb_evict_inode(struct inode *); + static void smb_put_super(struct super_block *); + static int smb_statfs(struct dentry *, struct kstatfs *); + static int smb_show_options(struct seq_file *, struct vfsmount *); + + static struct kmem_cache *smb_inode_cachep; + + static struct inode *smb_alloc_inode(struct super_block *sb) + { + struct smb_inode_info *ei; + ei = (struct smb_inode_info *)kmem_cache_alloc(smb_inode_cachep, GFP_KERNEL); + if (!ei) + return NULL; + return &ei->vfs_inode; + } + + static void smb_destroy_inode(struct inode *inode) + { + kmem_cache_free(smb_inode_cachep, SMB_I(inode)); + } + + static void init_once(void *foo) + { + struct smb_inode_info *ei = (struct smb_inode_info *) foo; + + inode_init_once(&ei->vfs_inode); + } + + static int init_inodecache(void) + { + smb_inode_cachep = kmem_cache_create("smb_inode_cache", + sizeof(struct smb_inode_info), + 0, (SLAB_RECLAIM_ACCOUNT| + SLAB_MEM_SPREAD), + init_once); + if (smb_inode_cachep == NULL) + return -ENOMEM; + return 0; + } + + static void destroy_inodecache(void) + { + kmem_cache_destroy(smb_inode_cachep); + } + + static int smb_remount(struct super_block *sb, int *flags, char *data) + { + *flags |= MS_NODIRATIME; + return 0; + } + + static const struct super_operations smb_sops = + { + .alloc_inode = smb_alloc_inode, + .destroy_inode = smb_destroy_inode, + .drop_inode = generic_delete_inode, + .evict_inode = smb_evict_inode, + .put_super = smb_put_super, + .statfs = smb_statfs, + .show_options = smb_show_options, + .remount_fs = smb_remount, + }; + + + /* We are always generating a new inode here */ + struct inode * + smb_iget(struct super_block *sb, struct smb_fattr *fattr) + { + struct smb_sb_info *server = SMB_SB(sb); + struct inode *result; + + DEBUG1("smb_iget: %p\n", fattr); + + result = new_inode(sb); + if (!result) + return result; + result->i_ino = fattr->f_ino; + SMB_I(result)->open = 0; + SMB_I(result)->fileid = 0; + SMB_I(result)->access = 0; + SMB_I(result)->flags = 0; + SMB_I(result)->closed = 0; + SMB_I(result)->openers = 0; + smb_set_inode_attr(result, fattr); + if (S_ISREG(result->i_mode)) { + result->i_op = &smb_file_inode_operations; + result->i_fop = &smb_file_operations; + result->i_data.a_ops = &smb_file_aops; + } else if (S_ISDIR(result->i_mode)) { + if (server->opt.capabilities & SMB_CAP_UNIX) + result->i_op = &smb_dir_inode_operations_unix; + else + result->i_op = &smb_dir_inode_operations; + result->i_fop = &smb_dir_operations; + } else if (S_ISLNK(result->i_mode)) { + result->i_op = &smb_link_inode_operations; + } else { + init_special_inode(result, result->i_mode, fattr->f_rdev); + } + insert_inode_hash(result); + return result; + } + + /* + * Copy the inode data to a smb_fattr structure. + */ + void + smb_get_inode_attr(struct inode *inode, struct smb_fattr *fattr) + { + memset(fattr, 0, sizeof(struct smb_fattr)); + fattr->f_mode = inode->i_mode; + fattr->f_nlink = inode->i_nlink; + fattr->f_ino = inode->i_ino; + fattr->f_uid = inode->i_uid; + fattr->f_gid = inode->i_gid; + fattr->f_size = inode->i_size; + fattr->f_mtime = inode->i_mtime; + fattr->f_ctime = inode->i_ctime; + fattr->f_atime = inode->i_atime; + fattr->f_blocks = inode->i_blocks; + + fattr->attr = SMB_I(inode)->attr; + /* + * Keep the attributes in sync with the inode permissions. + */ + if (fattr->f_mode & S_IWUSR) + fattr->attr &= ~aRONLY; + else + fattr->attr |= aRONLY; + } + + /* + * Update the inode, possibly causing it to invalidate its pages if mtime/size + * is different from last time. + */ + void + smb_set_inode_attr(struct inode *inode, struct smb_fattr *fattr) + { + struct smb_inode_info *ei = SMB_I(inode); + + /* + * A size change should have a different mtime, or same mtime + * but different size. + */ + time_t last_time = inode->i_mtime.tv_sec; + loff_t last_sz = inode->i_size; + + inode->i_mode = fattr->f_mode; + inode->i_nlink = fattr->f_nlink; + inode->i_uid = fattr->f_uid; + inode->i_gid = fattr->f_gid; + inode->i_ctime = fattr->f_ctime; + inode->i_blocks = fattr->f_blocks; + inode->i_size = fattr->f_size; + inode->i_mtime = fattr->f_mtime; + inode->i_atime = fattr->f_atime; + ei->attr = fattr->attr; + + /* + * Update the "last time refreshed" field for revalidation. + */ + ei->oldmtime = jiffies; + + if (inode->i_mtime.tv_sec != last_time || inode->i_size != last_sz) { + VERBOSE("%ld changed, old=%ld, new=%ld, oz=%ld, nz=%ld\n", + inode->i_ino, + (long) last_time, (long) inode->i_mtime.tv_sec, + (long) last_sz, (long) inode->i_size); + + if (!S_ISDIR(inode->i_mode)) + invalidate_remote_inode(inode); + } + } + + /* + * This is called if the connection has gone bad ... + * try to kill off all the current inodes. + */ + void + smb_invalidate_inodes(struct smb_sb_info *server) + { + VERBOSE("\n"); + shrink_dcache_sb(SB_of(server)); - invalidate_inodes(SB_of(server)); + } + + /* + * This is called to update the inode attributes after + * we've made changes to a file or directory. + */ + static int + smb_refresh_inode(struct dentry *dentry) + { + struct inode *inode = dentry->d_inode; + int error; + struct smb_fattr fattr; + + error = smb_proc_getattr(dentry, &fattr); + if (!error) { + smb_renew_times(dentry); + /* + * Check whether the type part of the mode changed, + * and don't update the attributes if it did. + * + * And don't dick with the root inode + */ + if (inode->i_ino == 2) + return error; + if (S_ISLNK(inode->i_mode)) + return error; /* VFS will deal with it */ + + if ((inode->i_mode & S_IFMT) == (fattr.f_mode & S_IFMT)) { + smb_set_inode_attr(inode, &fattr); + } else { + /* + * Big trouble! The inode has become a new object, + * so any operations attempted on it are invalid. + * + * To limit damage, mark the inode as bad so that + * subsequent lookup validations will fail. + */ + PARANOIA("%s/%s changed mode, %07o to %07o\n", + DENTRY_PATH(dentry), + inode->i_mode, fattr.f_mode); + + fattr.f_mode = inode->i_mode; /* save mode */ + make_bad_inode(inode); + inode->i_mode = fattr.f_mode; /* restore mode */ + /* + * No need to worry about unhashing the dentry: the + * lookup validation will see that the inode is bad. + * But we do want to invalidate the caches ... + */ + if (!S_ISDIR(inode->i_mode)) + invalidate_remote_inode(inode); + else + smb_invalid_dir_cache(inode); + error = -EIO; + } + } + return error; + } + + /* + * This is called when we want to check whether the inode + * has changed on the server. If it has changed, we must + * invalidate our local caches. + */ + int + smb_revalidate_inode(struct dentry *dentry) + { + struct smb_sb_info *s = server_from_dentry(dentry); + struct inode *inode = dentry->d_inode; + int error = 0; + + DEBUG1("smb_revalidate_inode\n"); + lock_kernel(); + + /* + * Check whether we've recently refreshed the inode. + */ + if (time_before(jiffies, SMB_I(inode)->oldmtime + SMB_MAX_AGE(s))) { + VERBOSE("up-to-date, ino=%ld, jiffies=%lu, oldtime=%lu\n", + inode->i_ino, jiffies, SMB_I(inode)->oldmtime); + goto out; + } + + error = smb_refresh_inode(dentry); + out: + unlock_kernel(); + return error; + } + + /* + * This routine is called when i_nlink == 0 and i_count goes to 0. + * All blocking cleanup operations need to go here to avoid races. + */ + static void + smb_evict_inode(struct inode *ino) + { + DEBUG1("ino=%ld\n", ino->i_ino); + truncate_inode_pages(&ino->i_data, 0); + end_writeback(ino); + lock_kernel(); + if (smb_close(ino)) + PARANOIA("could not close inode %ld\n", ino->i_ino); + unlock_kernel(); + } + + static struct option opts[] = { + { "version", 0, 'v' }, + { "win95", SMB_MOUNT_WIN95, 1 }, + { "oldattr", SMB_MOUNT_OLDATTR, 1 }, + { "dirattr", SMB_MOUNT_DIRATTR, 1 }, + { "case", SMB_MOUNT_CASE, 1 }, + { "uid", 0, 'u' }, + { "gid", 0, 'g' }, + { "file_mode", 0, 'f' }, + { "dir_mode", 0, 'd' }, + { "iocharset", 0, 'i' }, + { "codepage", 0, 'c' }, + { "ttl", 0, 't' }, + { NULL, 0, 0} + }; + + static int + parse_options(struct smb_mount_data_kernel *mnt, char *options) + { + int c; + unsigned long flags; + unsigned long value; + char *optarg; + char *optopt; + + flags = 0; + while ( (c = smb_getopt("smbfs", &options, opts, + &optopt, &optarg, &flags, &value)) > 0) { + + VERBOSE("'%s' -> '%s'\n", optopt, optarg ? optarg : ""); + switch (c) { + case 1: + /* got a "flag" option */ + break; + case 'v': + if (value != SMB_MOUNT_VERSION) { + printk ("smbfs: Bad mount version %ld, expected %d\n", + value, SMB_MOUNT_VERSION); + return 0; + } + mnt->version = value; + break; + case 'u': + mnt->uid = value; + flags |= SMB_MOUNT_UID; + break; + case 'g': + mnt->gid = value; + flags |= SMB_MOUNT_GID; + break; + case 'f': + mnt->file_mode = (value & S_IRWXUGO) | S_IFREG; + flags |= SMB_MOUNT_FMODE; + break; + case 'd': + mnt->dir_mode = (value & S_IRWXUGO) | S_IFDIR; + flags |= SMB_MOUNT_DMODE; + break; + case 'i': + strlcpy(mnt->codepage.local_name, optarg, + SMB_NLS_MAXNAMELEN); + break; + case 'c': + strlcpy(mnt->codepage.remote_name, optarg, + SMB_NLS_MAXNAMELEN); + break; + case 't': + mnt->ttl = value; + break; + default: + printk ("smbfs: Unrecognized mount option %s\n", + optopt); + return -1; + } + } + mnt->flags = flags; + return c; + } + + /* + * smb_show_options() is for displaying mount options in /proc/mounts. + * It tries to avoid showing settings that were not changed from their + * defaults. + */ + static int + smb_show_options(struct seq_file *s, struct vfsmount *m) + { + struct smb_mount_data_kernel *mnt = SMB_SB(m->mnt_sb)->mnt; + int i; + + for (i = 0; opts[i].name != NULL; i++) + if (mnt->flags & opts[i].flag) + seq_printf(s, ",%s", opts[i].name); + + if (mnt->flags & SMB_MOUNT_UID) + seq_printf(s, ",uid=%d", mnt->uid); + if (mnt->flags & SMB_MOUNT_GID) + seq_printf(s, ",gid=%d", mnt->gid); + if (mnt->mounted_uid != 0) + seq_printf(s, ",mounted_uid=%d", mnt->mounted_uid); + + /* + * Defaults for file_mode and dir_mode are unknown to us; they + * depend on the current umask of the user doing the mount. + */ + if (mnt->flags & SMB_MOUNT_FMODE) + seq_printf(s, ",file_mode=%04o", mnt->file_mode & S_IRWXUGO); + if (mnt->flags & SMB_MOUNT_DMODE) + seq_printf(s, ",dir_mode=%04o", mnt->dir_mode & S_IRWXUGO); + + if (strcmp(mnt->codepage.local_name, CONFIG_NLS_DEFAULT)) + seq_printf(s, ",iocharset=%s", mnt->codepage.local_name); + if (strcmp(mnt->codepage.remote_name, SMB_NLS_REMOTE)) + seq_printf(s, ",codepage=%s", mnt->codepage.remote_name); + + if (mnt->ttl != SMB_TTL_DEFAULT) + seq_printf(s, ",ttl=%d", mnt->ttl); + + return 0; + } + + static void + smb_unload_nls(struct smb_sb_info *server) + { + unload_nls(server->remote_nls); + unload_nls(server->local_nls); + } + + static void + smb_put_super(struct super_block *sb) + { + struct smb_sb_info *server = SMB_SB(sb); + + lock_kernel(); + + smb_lock_server(server); + server->state = CONN_INVALID; + smbiod_unregister_server(server); + + smb_close_socket(server); + + if (server->conn_pid) + kill_pid(server->conn_pid, SIGTERM, 1); + + bdi_destroy(&server->bdi); + kfree(server->ops); + smb_unload_nls(server); + sb->s_fs_info = NULL; + smb_unlock_server(server); + put_pid(server->conn_pid); + kfree(server); + + unlock_kernel(); + } + + static int smb_fill_super(struct super_block *sb, void *raw_data, int silent) + { + struct smb_sb_info *server; + struct smb_mount_data_kernel *mnt; + struct smb_mount_data *oldmnt; + struct inode *root_inode; + struct smb_fattr root; + int ver; + void *mem; + static int warn_count; + ++ lock_kernel(); ++ + if (warn_count < 5) { + warn_count++; + printk(KERN_EMERG "smbfs is deprecated and will be removed" + " from the 2.6.37 kernel. Please migrate to cifs\n"); + } + + if (!raw_data) + goto out_no_data; + + oldmnt = (struct smb_mount_data *) raw_data; + ver = oldmnt->version; + if (ver != SMB_MOUNT_OLDVERSION && cpu_to_be32(ver) != SMB_MOUNT_ASCII) + goto out_wrong_data; + + sb->s_flags |= MS_NODIRATIME; + sb->s_blocksize = 1024; /* Eh... Is this correct? */ + sb->s_blocksize_bits = 10; + sb->s_magic = SMB_SUPER_MAGIC; + sb->s_op = &smb_sops; + sb->s_time_gran = 100; + + server = kzalloc(sizeof(struct smb_sb_info), GFP_KERNEL); + if (!server) + goto out_no_server; + sb->s_fs_info = server; + + if (bdi_setup_and_register(&server->bdi, "smbfs", BDI_CAP_MAP_COPY)) + goto out_bdi; + + sb->s_bdi = &server->bdi; + + server->super_block = sb; + server->mnt = NULL; + server->sock_file = NULL; + init_waitqueue_head(&server->conn_wq); + init_MUTEX(&server->sem); + INIT_LIST_HEAD(&server->entry); + INIT_LIST_HEAD(&server->xmitq); + INIT_LIST_HEAD(&server->recvq); + server->conn_error = 0; + server->conn_pid = NULL; + server->state = CONN_INVALID; /* no connection yet */ + server->generation = 0; + + /* Allocate the global temp buffer and some superblock helper structs */ + /* FIXME: move these to the smb_sb_info struct */ + VERBOSE("alloc chunk = %lu\n", sizeof(struct smb_ops) + + sizeof(struct smb_mount_data_kernel)); + mem = kmalloc(sizeof(struct smb_ops) + + sizeof(struct smb_mount_data_kernel), GFP_KERNEL); + if (!mem) + goto out_no_mem; + + server->ops = mem; + smb_install_null_ops(server->ops); + server->mnt = mem + sizeof(struct smb_ops); + + /* Setup NLS stuff */ + server->remote_nls = NULL; + server->local_nls = NULL; + + mnt = server->mnt; + + memset(mnt, 0, sizeof(struct smb_mount_data_kernel)); + strlcpy(mnt->codepage.local_name, CONFIG_NLS_DEFAULT, + SMB_NLS_MAXNAMELEN); + strlcpy(mnt->codepage.remote_name, SMB_NLS_REMOTE, + SMB_NLS_MAXNAMELEN); + + mnt->ttl = SMB_TTL_DEFAULT; + if (ver == SMB_MOUNT_OLDVERSION) { + mnt->version = oldmnt->version; + + SET_UID(mnt->uid, oldmnt->uid); + SET_GID(mnt->gid, oldmnt->gid); + + mnt->file_mode = (oldmnt->file_mode & S_IRWXUGO) | S_IFREG; + mnt->dir_mode = (oldmnt->dir_mode & S_IRWXUGO) | S_IFDIR; + + mnt->flags = (oldmnt->file_mode >> 9) | SMB_MOUNT_UID | + SMB_MOUNT_GID | SMB_MOUNT_FMODE | SMB_MOUNT_DMODE; + } else { + mnt->file_mode = S_IRWXU | S_IRGRP | S_IXGRP | + S_IROTH | S_IXOTH | S_IFREG; + mnt->dir_mode = S_IRWXU | S_IRGRP | S_IXGRP | + S_IROTH | S_IXOTH | S_IFDIR; + if (parse_options(mnt, raw_data)) + goto out_bad_option; + } + mnt->mounted_uid = current_uid(); + smb_setcodepage(server, &mnt->codepage); + + /* + * Display the enabled options + * Note: smb_proc_getattr uses these in 2.4 (but was changed in 2.2) + */ + if (mnt->flags & SMB_MOUNT_OLDATTR) + printk("SMBFS: Using core getattr (Win 95 speedup)\n"); + else if (mnt->flags & SMB_MOUNT_DIRATTR) + printk("SMBFS: Using dir ff getattr\n"); + + if (smbiod_register_server(server) < 0) { + printk(KERN_ERR "smbfs: failed to start smbiod\n"); + goto out_no_smbiod; + } + + /* + * Keep the super block locked while we get the root inode. + */ + smb_init_root_dirent(server, &root, sb); + root_inode = smb_iget(sb, &root); + if (!root_inode) + goto out_no_root; + + sb->s_root = d_alloc_root(root_inode); + if (!sb->s_root) + goto out_no_root; + + smb_new_dentry(sb->s_root); + ++ unlock_kernel(); + return 0; + + out_no_root: + iput(root_inode); + out_no_smbiod: + smb_unload_nls(server); + out_bad_option: + kfree(mem); + out_no_mem: + bdi_destroy(&server->bdi); + out_bdi: + if (!server->mnt) + printk(KERN_ERR "smb_fill_super: allocation failure\n"); + sb->s_fs_info = NULL; + kfree(server); + goto out_fail; + out_wrong_data: + printk(KERN_ERR "smbfs: mount_data version %d is not supported\n", ver); + goto out_fail; + out_no_data: + printk(KERN_ERR "smb_fill_super: missing data argument\n"); + out_fail: ++ unlock_kernel(); + return -EINVAL; + out_no_server: + printk(KERN_ERR "smb_fill_super: cannot allocate struct smb_sb_info\n"); ++ unlock_kernel(); + return -ENOMEM; + } + + static int + smb_statfs(struct dentry *dentry, struct kstatfs *buf) + { + int result; + + lock_kernel(); + + result = smb_proc_dskattr(dentry, buf); + + unlock_kernel(); + + buf->f_type = SMB_SUPER_MAGIC; + buf->f_namelen = SMB_MAXPATHLEN; + return result; + } + + int smb_getattr(struct vfsmount *mnt, struct dentry *dentry, struct kstat *stat) + { + int err = smb_revalidate_inode(dentry); + if (!err) + generic_fillattr(dentry->d_inode, stat); + return err; + } + + int + smb_notify_change(struct dentry *dentry, struct iattr *attr) + { + struct inode *inode = dentry->d_inode; + struct smb_sb_info *server = server_from_dentry(dentry); + unsigned int mask = (S_IFREG | S_IFDIR | S_IRWXUGO); + int error, changed, refresh = 0; + struct smb_fattr fattr; + + lock_kernel(); + + error = smb_revalidate_inode(dentry); + if (error) + goto out; + + if ((error = inode_change_ok(inode, attr)) < 0) + goto out; + + error = -EPERM; + if ((attr->ia_valid & ATTR_UID) && (attr->ia_uid != server->mnt->uid)) + goto out; + + if ((attr->ia_valid & ATTR_GID) && (attr->ia_uid != server->mnt->gid)) + goto out; + + if ((attr->ia_valid & ATTR_MODE) && (attr->ia_mode & ~mask)) + goto out; + + if ((attr->ia_valid & ATTR_SIZE) != 0) { + VERBOSE("changing %s/%s, old size=%ld, new size=%ld\n", + DENTRY_PATH(dentry), + (long) inode->i_size, (long) attr->ia_size); + + filemap_write_and_wait(inode->i_mapping); + + error = smb_open(dentry, O_WRONLY); + if (error) + goto out; + error = server->ops->truncate(inode, attr->ia_size); + if (error) + goto out; + truncate_setsize(inode, attr->ia_size); + refresh = 1; + } + + if (server->opt.capabilities & SMB_CAP_UNIX) { + /* For now we don't want to set the size with setattr_unix */ + attr->ia_valid &= ~ATTR_SIZE; + /* FIXME: only call if we actually want to set something? */ + error = smb_proc_setattr_unix(dentry, attr, 0, 0); + if (!error) + refresh = 1; + + goto out; + } + + /* + * Initialize the fattr and check for changed fields. + * Note: CTIME under SMB is creation time rather than + * change time, so we don't attempt to change it. + */ + smb_get_inode_attr(inode, &fattr); + + changed = 0; + if ((attr->ia_valid & ATTR_MTIME) != 0) { + fattr.f_mtime = attr->ia_mtime; + changed = 1; + } + if ((attr->ia_valid & ATTR_ATIME) != 0) { + fattr.f_atime = attr->ia_atime; + /* Earlier protocols don't have an access time */ + if (server->opt.protocol >= SMB_PROTOCOL_LANMAN2) + changed = 1; + } + if (changed) { + error = smb_proc_settime(dentry, &fattr); + if (error) + goto out; + refresh = 1; + } + + /* + * Check for mode changes ... we're extremely limited in + * what can be set for SMB servers: just the read-only bit. + */ + if ((attr->ia_valid & ATTR_MODE) != 0) { + VERBOSE("%s/%s mode change, old=%x, new=%x\n", + DENTRY_PATH(dentry), fattr.f_mode, attr->ia_mode); + changed = 0; + if (attr->ia_mode & S_IWUSR) { + if (fattr.attr & aRONLY) { + fattr.attr &= ~aRONLY; + changed = 1; + } + } else { + if (!(fattr.attr & aRONLY)) { + fattr.attr |= aRONLY; + changed = 1; + } + } + if (changed) { + error = smb_proc_setattr(dentry, &fattr); + if (error) + goto out; + refresh = 1; + } + } + error = 0; + + out: + if (refresh) + smb_refresh_inode(dentry); + unlock_kernel(); + return error; + } + + static int smb_get_sb(struct file_system_type *fs_type, + int flags, const char *dev_name, void *data, struct vfsmount *mnt) + { + return get_sb_nodev(fs_type, flags, data, smb_fill_super, mnt); + } + + static struct file_system_type smb_fs_type = { + .owner = THIS_MODULE, + .name = "smbfs", + .get_sb = smb_get_sb, + .kill_sb = kill_anon_super, + .fs_flags = FS_BINARY_MOUNTDATA, + }; + + static int __init init_smb_fs(void) + { + int err; + DEBUG1("registering ...\n"); + + err = init_inodecache(); + if (err) + goto out_inode; + err = smb_init_request_cache(); + if (err) + goto out_request; + err = register_filesystem(&smb_fs_type); + if (err) + goto out; + return 0; + out: + smb_destroy_request_cache(); + out_request: + destroy_inodecache(); + out_inode: + return err; + } + + static void __exit exit_smb_fs(void) + { + DEBUG1("unregistering ...\n"); + unregister_filesystem(&smb_fs_type); + smb_destroy_request_cache(); + destroy_inodecache(); + } + + module_init(init_smb_fs) + module_exit(exit_smb_fs) + MODULE_LICENSE("GPL"); diff --cc drivers/staging/smbfs/proc.c index 000000000000,2fb079c37f25..ba37b1fae182 mode 000000,100644..100644 --- a/drivers/staging/smbfs/proc.c +++ b/drivers/staging/smbfs/proc.c @@@ -1,0 -1,3506 +1,3502 @@@ + /* + * proc.c + * + * Copyright (C) 1995, 1996 by Paal-Kr. Engstad and Volker Lendecke + * Copyright (C) 1997 by Volker Lendecke + * + * Please add a note about your changes to smbfs in the ChangeLog file. + */ + + #include + #include + #include + #include + #include + #include + #include + #include + #include + #include + #include + #include + #include + #include + + #include + #include + + #include "smb_fs.h" + #include "smbno.h" + #include "smb_mount.h" + #include "smb_debug.h" + #include "proto.h" + #include "request.h" + + + /* Features. Undefine if they cause problems, this should perhaps be a + config option. */ + #define SMBFS_POSIX_UNLINK 1 + + /* Allow smb_retry to be interrupted. */ + #define SMB_RETRY_INTR + + #define SMB_VWV(packet) ((packet) + SMB_HEADER_LEN) + #define SMB_CMD(packet) (*(packet+8)) + #define SMB_WCT(packet) (*(packet+SMB_HEADER_LEN - 1)) + + #define SMB_DIRINFO_SIZE 43 + #define SMB_STATUS_SIZE 21 + + #define SMB_ST_BLKSIZE (PAGE_SIZE) + #define SMB_ST_BLKSHIFT (PAGE_SHIFT) + + static struct smb_ops smb_ops_core; + static struct smb_ops smb_ops_os2; + static struct smb_ops smb_ops_win95; + static struct smb_ops smb_ops_winNT; + static struct smb_ops smb_ops_unix; + static struct smb_ops smb_ops_null; + + static void + smb_init_dirent(struct smb_sb_info *server, struct smb_fattr *fattr); + static void + smb_finish_dirent(struct smb_sb_info *server, struct smb_fattr *fattr); + static int + smb_proc_getattr_core(struct smb_sb_info *server, struct dentry *dir, + struct smb_fattr *fattr); + static int + smb_proc_getattr_ff(struct smb_sb_info *server, struct dentry *dentry, + struct smb_fattr *fattr); + static int + smb_proc_setattr_core(struct smb_sb_info *server, struct dentry *dentry, + u16 attr); + static int + smb_proc_setattr_ext(struct smb_sb_info *server, + struct inode *inode, struct smb_fattr *fattr); + static int + smb_proc_query_cifsunix(struct smb_sb_info *server); + static void + install_ops(struct smb_ops *dst, struct smb_ops *src); + + + static void + str_upper(char *name, int len) + { + while (len--) + { + if (*name >= 'a' && *name <= 'z') + *name -= ('a' - 'A'); + name++; + } + } + + #if 0 + static void + str_lower(char *name, int len) + { + while (len--) + { + if (*name >= 'A' && *name <= 'Z') + *name += ('a' - 'A'); + name++; + } + } + #endif + + /* reverse a string inline. This is used by the dircache walking routines */ + static void reverse_string(char *buf, int len) + { + char c; + char *end = buf+len-1; + + while(buf < end) { + c = *buf; + *(buf++) = *end; + *(end--) = c; + } + } + + /* no conversion, just a wrapper for memcpy. */ + static int convert_memcpy(unsigned char *output, int olen, + const unsigned char *input, int ilen, + struct nls_table *nls_from, + struct nls_table *nls_to) + { + if (olen < ilen) + return -ENAMETOOLONG; + memcpy(output, input, ilen); + return ilen; + } + + static inline int write_char(unsigned char ch, char *output, int olen) + { + if (olen < 4) + return -ENAMETOOLONG; + sprintf(output, ":x%02x", ch); + return 4; + } + + static inline int write_unichar(wchar_t ch, char *output, int olen) + { + if (olen < 5) + return -ENAMETOOLONG; + sprintf(output, ":%04x", ch); + return 5; + } + + /* convert from one "codepage" to another (possibly being utf8). */ + static int convert_cp(unsigned char *output, int olen, + const unsigned char *input, int ilen, + struct nls_table *nls_from, + struct nls_table *nls_to) + { + int len = 0; + int n; + wchar_t ch; + + while (ilen > 0) { + /* convert by changing to unicode and back to the new cp */ + n = nls_from->char2uni(input, ilen, &ch); + if (n == -EINVAL) { + ilen--; + n = write_char(*input++, output, olen); + if (n < 0) + goto fail; + output += n; + olen -= n; + len += n; + continue; + } else if (n < 0) + goto fail; + input += n; + ilen -= n; + + n = nls_to->uni2char(ch, output, olen); + if (n == -EINVAL) + n = write_unichar(ch, output, olen); + if (n < 0) + goto fail; + output += n; + olen -= n; + + len += n; + } + return len; + fail: + return n; + } + + /* ----------------------------------------------------------- */ + + /* + * nls_unicode + * + * This encodes/decodes little endian unicode format + */ + + static int uni2char(wchar_t uni, unsigned char *out, int boundlen) + { + if (boundlen < 2) + return -EINVAL; + *out++ = uni & 0xff; + *out++ = uni >> 8; + return 2; + } + + static int char2uni(const unsigned char *rawstring, int boundlen, wchar_t *uni) + { + if (boundlen < 2) + return -EINVAL; + *uni = (rawstring[1] << 8) | rawstring[0]; + return 2; + } + + static struct nls_table unicode_table = { + .charset = "unicode", + .uni2char = uni2char, + .char2uni = char2uni, + }; + + /* ----------------------------------------------------------- */ + + static int setcodepage(struct nls_table **p, char *name) + { + struct nls_table *nls; + + if (!name || !*name) { + nls = NULL; + } else if ( (nls = load_nls(name)) == NULL) { + printk (KERN_ERR "smbfs: failed to load nls '%s'\n", name); + return -EINVAL; + } + + /* if already set, unload the previous one. */ + if (*p && *p != &unicode_table) + unload_nls(*p); + *p = nls; + + return 0; + } + + /* Handles all changes to codepage settings. */ + int smb_setcodepage(struct smb_sb_info *server, struct smb_nls_codepage *cp) + { + int n = 0; + + smb_lock_server(server); + + /* Don't load any nls_* at all, if no remote is requested */ + if (!*cp->remote_name) + goto out; + + /* local */ + n = setcodepage(&server->local_nls, cp->local_name); + if (n != 0) + goto out; + + /* remote */ + if (!strcmp(cp->remote_name, "unicode")) { + server->remote_nls = &unicode_table; + } else { + n = setcodepage(&server->remote_nls, cp->remote_name); + if (n != 0) + setcodepage(&server->local_nls, NULL); + } + + out: + if (server->local_nls != NULL && server->remote_nls != NULL) + server->ops->convert = convert_cp; + else + server->ops->convert = convert_memcpy; + + smb_unlock_server(server); + return n; + } + + + /*****************************************************************************/ + /* */ + /* Encoding/Decoding section */ + /* */ + /*****************************************************************************/ + + static __u8 * + smb_encode_smb_length(__u8 * p, __u32 len) + { + *p = 0; + *(p+1) = 0; + *(p+2) = (len & 0xFF00) >> 8; + *(p+3) = (len & 0xFF); + if (len > 0xFFFF) + { + *(p+1) = 1; + } + return p + 4; + } + + /* + * smb_build_path: build the path to entry and name storing it in buf. + * The path returned will have the trailing '\0'. + */ + static int smb_build_path(struct smb_sb_info *server, unsigned char *buf, + int maxlen, + struct dentry *entry, struct qstr *name) + { + unsigned char *path = buf; + int len; + int unicode = (server->mnt->flags & SMB_MOUNT_UNICODE) != 0; + + if (maxlen < (2< SMB_MAXPATHLEN + 1) + maxlen = SMB_MAXPATHLEN + 1; + + if (entry == NULL) + goto test_name_and_out; + + /* + * If IS_ROOT, we have to do no walking at all. + */ + if (IS_ROOT(entry) && !name) { + *path++ = '\\'; + if (unicode) *path++ = '\0'; + *path++ = '\0'; + if (unicode) *path++ = '\0'; + return path-buf; + } + + /* + * Build the path string walking the tree backward from end to ROOT + * and store it in reversed order [see reverse_string()] + */ + dget(entry); - spin_lock(&entry->d_lock); + while (!IS_ROOT(entry)) { + struct dentry *parent; + + if (maxlen < (3<d_lock); + dput(entry); + return -ENAMETOOLONG; + } + ++ spin_lock(&entry->d_lock); + len = server->ops->convert(path, maxlen-2, + entry->d_name.name, entry->d_name.len, + server->local_nls, server->remote_nls); + if (len < 0) { + spin_unlock(&entry->d_lock); + dput(entry); + return len; + } + reverse_string(path, len); + path += len; + if (unicode) { + /* Note: reverse order */ + *path++ = '\0'; + maxlen--; + } + *path++ = '\\'; + maxlen -= len+1; - - parent = entry->d_parent; - dget(parent); + spin_unlock(&entry->d_lock); ++ ++ parent = dget_parent(entry); + dput(entry); + entry = parent; - spin_lock(&entry->d_lock); + } - spin_unlock(&entry->d_lock); + dput(entry); + reverse_string(buf, path-buf); + + /* maxlen has space for at least one char */ + test_name_and_out: + if (name) { + if (maxlen < (3<ops->convert(path, maxlen-2, + name->name, name->len, + server->local_nls, server->remote_nls); + if (len < 0) + return len; + path += len; + maxlen -= len+1; + } + /* maxlen has space for at least one char */ + *path++ = '\0'; + if (unicode) *path++ = '\0'; + return path-buf; + } + + static int smb_encode_path(struct smb_sb_info *server, char *buf, int maxlen, + struct dentry *dir, struct qstr *name) + { + int result; + + result = smb_build_path(server, buf, maxlen, dir, name); + if (result < 0) + goto out; + if (server->opt.protocol <= SMB_PROTOCOL_COREPLUS) + str_upper(buf, result); + out: + return result; + } + + /* encode_path for non-trans2 request SMBs */ + static int smb_simple_encode_path(struct smb_request *req, char **p, + struct dentry * entry, struct qstr * name) + { + struct smb_sb_info *server = req->rq_server; + char *s = *p; + int res; + int maxlen = ((char *)req->rq_buffer + req->rq_bufsize) - s; + int unicode = (server->mnt->flags & SMB_MOUNT_UNICODE); + + if (!maxlen) + return -ENAMETOOLONG; + *s++ = 4; /* ASCII data format */ + + /* + * SMB Unicode strings must be 16bit aligned relative the start of the + * packet. If they are not they must be padded with 0. + */ + if (unicode) { + int align = s - (char *)req->rq_buffer; + if (!(align & 1)) { + *s++ = '\0'; + maxlen--; + } + } + + res = smb_encode_path(server, s, maxlen-1, entry, name); + if (res < 0) + return res; + *p = s + res; + return 0; + } + + /* The following are taken directly from msdos-fs */ + + /* Linear day numbers of the respective 1sts in non-leap years. */ + + static int day_n[] = + {0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334, 0, 0, 0, 0}; + /* JanFebMarApr May Jun Jul Aug Sep Oct Nov Dec */ + + + static time_t + utc2local(struct smb_sb_info *server, time_t time) + { + return time - server->opt.serverzone*60; + } + + static time_t + local2utc(struct smb_sb_info *server, time_t time) + { + return time + server->opt.serverzone*60; + } + + /* Convert a MS-DOS time/date pair to a UNIX date (seconds since 1 1 70). */ + + static time_t + date_dos2unix(struct smb_sb_info *server, __u16 date, __u16 time) + { + int month, year; + time_t secs; + + /* first subtract and mask after that... Otherwise, if + date == 0, bad things happen */ + month = ((date >> 5) - 1) & 15; + year = date >> 9; + secs = (time & 31) * 2 + 60 * ((time >> 5) & 63) + (time >> 11) * 3600 + 86400 * + ((date & 31) - 1 + day_n[month] + (year / 4) + year * 365 - ((year & 3) == 0 && + month < 2 ? 1 : 0) + 3653); + /* days since 1.1.70 plus 80's leap day */ + return local2utc(server, secs); + } + + + /* Convert linear UNIX date to a MS-DOS time/date pair. */ + + static void + date_unix2dos(struct smb_sb_info *server, + int unix_date, __u16 *date, __u16 *time) + { + int day, year, nl_day, month; + + unix_date = utc2local(server, unix_date); + if (unix_date < 315532800) + unix_date = 315532800; + + *time = (unix_date % 60) / 2 + + (((unix_date / 60) % 60) << 5) + + (((unix_date / 3600) % 24) << 11); + + day = unix_date / 86400 - 3652; + year = day / 365; + if ((year + 3) / 4 + 365 * year > day) + year--; + day -= (year + 3) / 4 + 365 * year; + if (day == 59 && !(year & 3)) { + nl_day = day; + month = 2; + } else { + nl_day = (year & 3) || day <= 59 ? day : day - 1; + for (month = 1; month < 12; month++) + if (day_n[month] > nl_day) + break; + } + *date = nl_day - day_n[month - 1] + 1 + (month << 5) + (year << 9); + } + + /* The following are taken from fs/ntfs/util.c */ + + #define NTFS_TIME_OFFSET ((u64)(369*365 + 89) * 24 * 3600 * 10000000) + + /* + * Convert the NT UTC (based 1601-01-01, in hundred nanosecond units) + * into Unix UTC (based 1970-01-01, in seconds). + */ + static struct timespec + smb_ntutc2unixutc(u64 ntutc) + { + struct timespec ts; + /* FIXME: what about the timezone difference? */ + /* Subtract the NTFS time offset, then convert to 1s intervals. */ + u64 t = ntutc - NTFS_TIME_OFFSET; + ts.tv_nsec = do_div(t, 10000000) * 100; + ts.tv_sec = t; + return ts; + } + + /* Convert the Unix UTC into NT time */ + static u64 + smb_unixutc2ntutc(struct timespec ts) + { + /* Note: timezone conversion is probably wrong. */ + /* return ((u64)utc2local(server, t)) * 10000000 + NTFS_TIME_OFFSET; */ + return ((u64)ts.tv_sec) * 10000000 + ts.tv_nsec/100 + NTFS_TIME_OFFSET; + } + + #define MAX_FILE_MODE 6 + static mode_t file_mode[] = { + S_IFREG, S_IFDIR, S_IFLNK, S_IFCHR, S_IFBLK, S_IFIFO, S_IFSOCK + }; + + static int smb_filetype_to_mode(u32 filetype) + { + if (filetype > MAX_FILE_MODE) { + PARANOIA("Filetype out of range: %d\n", filetype); + return S_IFREG; + } + return file_mode[filetype]; + } + + static u32 smb_filetype_from_mode(int mode) + { + if (S_ISREG(mode)) + return UNIX_TYPE_FILE; + if (S_ISDIR(mode)) + return UNIX_TYPE_DIR; + if (S_ISLNK(mode)) + return UNIX_TYPE_SYMLINK; + if (S_ISCHR(mode)) + return UNIX_TYPE_CHARDEV; + if (S_ISBLK(mode)) + return UNIX_TYPE_BLKDEV; + if (S_ISFIFO(mode)) + return UNIX_TYPE_FIFO; + if (S_ISSOCK(mode)) + return UNIX_TYPE_SOCKET; + return UNIX_TYPE_UNKNOWN; + } + + + /*****************************************************************************/ + /* */ + /* Support section. */ + /* */ + /*****************************************************************************/ + + __u32 + smb_len(__u8 * p) + { + return ((*(p+1) & 0x1) << 16L) | (*(p+2) << 8L) | *(p+3); + } + + static __u16 + smb_bcc(__u8 * packet) + { + int pos = SMB_HEADER_LEN + SMB_WCT(packet) * sizeof(__u16); + return WVAL(packet, pos); + } + + /* smb_valid_packet: We check if packet fulfills the basic + requirements of a smb packet */ + + static int + smb_valid_packet(__u8 * packet) + { + return (packet[4] == 0xff + && packet[5] == 'S' + && packet[6] == 'M' + && packet[7] == 'B' + && (smb_len(packet) + 4 == SMB_HEADER_LEN + + SMB_WCT(packet) * 2 + smb_bcc(packet))); + } + + /* smb_verify: We check if we got the answer we expected, and if we + got enough data. If bcc == -1, we don't care. */ + + static int + smb_verify(__u8 * packet, int command, int wct, int bcc) + { + if (SMB_CMD(packet) != command) + goto bad_command; + if (SMB_WCT(packet) < wct) + goto bad_wct; + if (bcc != -1 && smb_bcc(packet) < bcc) + goto bad_bcc; + return 0; + + bad_command: + printk(KERN_ERR "smb_verify: command=%x, SMB_CMD=%x??\n", + command, SMB_CMD(packet)); + goto fail; + bad_wct: + printk(KERN_ERR "smb_verify: command=%x, wct=%d, SMB_WCT=%d??\n", + command, wct, SMB_WCT(packet)); + goto fail; + bad_bcc: + printk(KERN_ERR "smb_verify: command=%x, bcc=%d, SMB_BCC=%d??\n", + command, bcc, smb_bcc(packet)); + fail: + return -EIO; + } + + /* + * Returns the maximum read or write size for the "payload". Making all of the + * packet fit within the negotiated max_xmit size. + * + * N.B. Since this value is usually computed before locking the server, + * the server's packet size must never be decreased! + */ + static inline int + smb_get_xmitsize(struct smb_sb_info *server, int overhead) + { + return server->opt.max_xmit - overhead; + } + + /* + * Calculate the maximum read size + */ + int + smb_get_rsize(struct smb_sb_info *server) + { + /* readX has 12 parameters, read has 5 */ + int overhead = SMB_HEADER_LEN + 12 * sizeof(__u16) + 2 + 1 + 2; + int size = smb_get_xmitsize(server, overhead); + + VERBOSE("xmit=%d, size=%d\n", server->opt.max_xmit, size); + + return size; + } + + /* + * Calculate the maximum write size + */ + int + smb_get_wsize(struct smb_sb_info *server) + { + /* writeX has 14 parameters, write has 5 */ + int overhead = SMB_HEADER_LEN + 14 * sizeof(__u16) + 2 + 1 + 2; + int size = smb_get_xmitsize(server, overhead); + + VERBOSE("xmit=%d, size=%d\n", server->opt.max_xmit, size); + + return size; + } + + /* + * Convert SMB error codes to -E... errno values. + */ + int + smb_errno(struct smb_request *req) + { + int errcls = req->rq_rcls; + int error = req->rq_err; + char *class = "Unknown"; + + VERBOSE("errcls %d code %d from command 0x%x\n", + errcls, error, SMB_CMD(req->rq_header)); + + if (errcls == ERRDOS) { + switch (error) { + case ERRbadfunc: + return -EINVAL; + case ERRbadfile: + case ERRbadpath: + return -ENOENT; + case ERRnofids: + return -EMFILE; + case ERRnoaccess: + return -EACCES; + case ERRbadfid: + return -EBADF; + case ERRbadmcb: + return -EREMOTEIO; + case ERRnomem: + return -ENOMEM; + case ERRbadmem: + return -EFAULT; + case ERRbadenv: + case ERRbadformat: + return -EREMOTEIO; + case ERRbadaccess: + return -EACCES; + case ERRbaddata: + return -E2BIG; + case ERRbaddrive: + return -ENXIO; + case ERRremcd: + return -EREMOTEIO; + case ERRdiffdevice: + return -EXDEV; + case ERRnofiles: + return -ENOENT; + case ERRbadshare: + return -ETXTBSY; + case ERRlock: + return -EDEADLK; + case ERRfilexists: + return -EEXIST; + case ERROR_INVALID_PARAMETER: + return -EINVAL; + case ERROR_DISK_FULL: + return -ENOSPC; + case ERROR_INVALID_NAME: + return -ENOENT; + case ERROR_DIR_NOT_EMPTY: + return -ENOTEMPTY; + case ERROR_NOT_LOCKED: + return -ENOLCK; + case ERROR_ALREADY_EXISTS: + return -EEXIST; + default: + class = "ERRDOS"; + goto err_unknown; + } + } else if (errcls == ERRSRV) { + switch (error) { + /* N.B. This is wrong ... EIO ? */ + case ERRerror: + return -ENFILE; + case ERRbadpw: + return -EINVAL; + case ERRbadtype: + case ERRtimeout: + return -EIO; + case ERRaccess: + return -EACCES; + /* + * This is a fatal error, as it means the "tree ID" + * for this connection is no longer valid. We map + * to a special error code and get a new connection. + */ + case ERRinvnid: + return -EBADSLT; + default: + class = "ERRSRV"; + goto err_unknown; + } + } else if (errcls == ERRHRD) { + switch (error) { + case ERRnowrite: + return -EROFS; + case ERRbadunit: + return -ENODEV; + case ERRnotready: + return -EUCLEAN; + case ERRbadcmd: + case ERRdata: + return -EIO; + case ERRbadreq: + return -ERANGE; + case ERRbadshare: + return -ETXTBSY; + case ERRlock: + return -EDEADLK; + case ERRdiskfull: + return -ENOSPC; + default: + class = "ERRHRD"; + goto err_unknown; + } + } else if (errcls == ERRCMD) { + class = "ERRCMD"; + } else if (errcls == SUCCESS) { + return 0; /* This is the only valid 0 return */ + } + + err_unknown: + printk(KERN_ERR "smb_errno: class %s, code %d from command 0x%x\n", + class, error, SMB_CMD(req->rq_header)); + return -EIO; + } + + /* smb_request_ok: We expect the server to be locked. Then we do the + request and check the answer completely. When smb_request_ok + returns 0, you can be quite sure that everything went well. When + the answer is <=0, the returned number is a valid unix errno. */ + + static int + smb_request_ok(struct smb_request *req, int command, int wct, int bcc) + { + int result; + + req->rq_resp_wct = wct; + req->rq_resp_bcc = bcc; + + result = smb_add_request(req); + if (result != 0) { + DEBUG1("smb_request failed\n"); + goto out; + } + + if (smb_valid_packet(req->rq_header) != 0) { + PARANOIA("invalid packet!\n"); + goto out; + } + + result = smb_verify(req->rq_header, command, wct, bcc); + + out: + return result; + } + + /* + * This implements the NEWCONN ioctl. It installs the server pid, + * sets server->state to CONN_VALID, and wakes up the waiting process. + */ + int + smb_newconn(struct smb_sb_info *server, struct smb_conn_opt *opt) + { + struct file *filp; + struct sock *sk; + int error; + + VERBOSE("fd=%d, pid=%d\n", opt->fd, current->pid); + + smb_lock_server(server); + + /* + * Make sure we don't already have a valid connection ... + */ + error = -EINVAL; + if (server->state == CONN_VALID) + goto out; + + error = -EACCES; + if (current_uid() != server->mnt->mounted_uid && + !capable(CAP_SYS_ADMIN)) + goto out; + + error = -EBADF; + filp = fget(opt->fd); + if (!filp) + goto out; + if (!smb_valid_socket(filp->f_path.dentry->d_inode)) + goto out_putf; + + server->sock_file = filp; + server->conn_pid = get_pid(task_pid(current)); + server->opt = *opt; + server->generation += 1; + server->state = CONN_VALID; + error = 0; + + if (server->conn_error) { + /* + * conn_error is the returncode we originally decided to + * drop the old connection on. This message should be positive + * and not make people ask questions on why smbfs is printing + * error messages ... + */ + printk(KERN_INFO "SMB connection re-established (%d)\n", + server->conn_error); + server->conn_error = 0; + } + + /* + * Store the server in sock user_data (Only used by sunrpc) + */ + sk = SOCKET_I(filp->f_path.dentry->d_inode)->sk; + sk->sk_user_data = server; + + /* chain into the data_ready callback */ + server->data_ready = xchg(&sk->sk_data_ready, smb_data_ready); + + /* check if we have an old smbmount that uses seconds for the + serverzone */ + if (server->opt.serverzone > 12*60 || server->opt.serverzone < -12*60) + server->opt.serverzone /= 60; + + /* now that we have an established connection we can detect the server + type and enable bug workarounds */ + if (server->opt.protocol < SMB_PROTOCOL_LANMAN2) + install_ops(server->ops, &smb_ops_core); + else if (server->opt.protocol == SMB_PROTOCOL_LANMAN2) + install_ops(server->ops, &smb_ops_os2); + else if (server->opt.protocol == SMB_PROTOCOL_NT1 && + (server->opt.max_xmit < 0x1000) && + !(server->opt.capabilities & SMB_CAP_NT_SMBS)) { + /* FIXME: can we kill the WIN95 flag now? */ + server->mnt->flags |= SMB_MOUNT_WIN95; + VERBOSE("detected WIN95 server\n"); + install_ops(server->ops, &smb_ops_win95); + } else { + /* + * Samba has max_xmit 65535 + * NT4spX has max_xmit 4536 (or something like that) + * win2k has ... + */ + VERBOSE("detected NT1 (Samba, NT4/5) server\n"); + install_ops(server->ops, &smb_ops_winNT); + } + + /* FIXME: the win9x code wants to modify these ... (seek/trunc bug) */ + if (server->mnt->flags & SMB_MOUNT_OLDATTR) { + server->ops->getattr = smb_proc_getattr_core; + } else if (server->mnt->flags & SMB_MOUNT_DIRATTR) { + server->ops->getattr = smb_proc_getattr_ff; + } + + /* Decode server capabilities */ + if (server->opt.capabilities & SMB_CAP_LARGE_FILES) { + /* Should be ok to set this now, as no one can access the + mount until the connection has been established. */ + SB_of(server)->s_maxbytes = ~0ULL >> 1; + VERBOSE("LFS enabled\n"); + } + if (server->opt.capabilities & SMB_CAP_UNICODE) { + server->mnt->flags |= SMB_MOUNT_UNICODE; + VERBOSE("Unicode enabled\n"); + } else { + server->mnt->flags &= ~SMB_MOUNT_UNICODE; + } + #if 0 + /* flags we may test for other patches ... */ + if (server->opt.capabilities & SMB_CAP_LARGE_READX) { + VERBOSE("Large reads enabled\n"); + } + if (server->opt.capabilities & SMB_CAP_LARGE_WRITEX) { + VERBOSE("Large writes enabled\n"); + } + #endif + if (server->opt.capabilities & SMB_CAP_UNIX) { + struct inode *inode; + VERBOSE("Using UNIX CIFS extensions\n"); + install_ops(server->ops, &smb_ops_unix); + inode = SB_of(server)->s_root->d_inode; + if (inode) + inode->i_op = &smb_dir_inode_operations_unix; + } + + VERBOSE("protocol=%d, max_xmit=%d, pid=%d capabilities=0x%x\n", + server->opt.protocol, server->opt.max_xmit, + pid_nr(server->conn_pid), server->opt.capabilities); + + /* FIXME: this really should be done by smbmount. */ + if (server->opt.max_xmit > SMB_MAX_PACKET_SIZE) { + server->opt.max_xmit = SMB_MAX_PACKET_SIZE; + } + + smb_unlock_server(server); + smbiod_wake_up(); + if (server->opt.capabilities & SMB_CAP_UNIX) + smb_proc_query_cifsunix(server); + + server->conn_complete++; + wake_up_interruptible_all(&server->conn_wq); + return error; + + out: + smb_unlock_server(server); + smbiod_wake_up(); + return error; + + out_putf: + fput(filp); + goto out; + } + + /* smb_setup_header: We completely set up the packet. You only have to + insert the command-specific fields */ + + __u8 * + smb_setup_header(struct smb_request *req, __u8 command, __u16 wct, __u16 bcc) + { + __u32 xmit_len = SMB_HEADER_LEN + wct * sizeof(__u16) + bcc + 2; + __u8 *p = req->rq_header; + struct smb_sb_info *server = req->rq_server; + + p = smb_encode_smb_length(p, xmit_len - 4); + + *p++ = 0xff; + *p++ = 'S'; + *p++ = 'M'; + *p++ = 'B'; + *p++ = command; + + memset(p, '\0', 19); + p += 19; + p += 8; + + if (server->opt.protocol > SMB_PROTOCOL_CORE) { + int flags = SMB_FLAGS_CASELESS_PATHNAMES; + int flags2 = SMB_FLAGS2_LONG_PATH_COMPONENTS | + SMB_FLAGS2_EXTENDED_ATTRIBUTES; /* EA? not really ... */ + + *(req->rq_header + smb_flg) = flags; + if (server->mnt->flags & SMB_MOUNT_UNICODE) + flags2 |= SMB_FLAGS2_UNICODE_STRINGS; + WSET(req->rq_header, smb_flg2, flags2); + } + *p++ = wct; /* wct */ + p += 2 * wct; + WSET(p, 0, bcc); + + /* Include the header in the data to send */ + req->rq_iovlen = 1; + req->rq_iov[0].iov_base = req->rq_header; + req->rq_iov[0].iov_len = xmit_len - bcc; + + return req->rq_buffer; + } + + static void + smb_setup_bcc(struct smb_request *req, __u8 *p) + { + u16 bcc = p - req->rq_buffer; + u8 *pbcc = req->rq_header + SMB_HEADER_LEN + 2*SMB_WCT(req->rq_header); + + WSET(pbcc, 0, bcc); + + smb_encode_smb_length(req->rq_header, SMB_HEADER_LEN + + 2*SMB_WCT(req->rq_header) - 2 + bcc); + + /* Include the "bytes" in the data to send */ + req->rq_iovlen = 2; + req->rq_iov[1].iov_base = req->rq_buffer; + req->rq_iov[1].iov_len = bcc; + } + + static int + smb_proc_seek(struct smb_sb_info *server, __u16 fileid, + __u16 mode, off_t offset) + { + int result; + struct smb_request *req; + + result = -ENOMEM; + if (! (req = smb_alloc_request(server, 0))) + goto out; + + smb_setup_header(req, SMBlseek, 4, 0); + WSET(req->rq_header, smb_vwv0, fileid); + WSET(req->rq_header, smb_vwv1, mode); + DSET(req->rq_header, smb_vwv2, offset); + req->rq_flags |= SMB_REQ_NORETRY; + + result = smb_request_ok(req, SMBlseek, 2, 0); + if (result < 0) { + result = 0; + goto out_free; + } + + result = DVAL(req->rq_header, smb_vwv0); + out_free: + smb_rput(req); + out: + return result; + } + + static int + smb_proc_open(struct smb_sb_info *server, struct dentry *dentry, int wish) + { + struct inode *ino = dentry->d_inode; + struct smb_inode_info *ei = SMB_I(ino); + int mode, read_write = 0x42, read_only = 0x40; + int res; + char *p; + struct smb_request *req; + + /* + * Attempt to open r/w, unless there are no write privileges. + */ + mode = read_write; + if (!(ino->i_mode & (S_IWUSR | S_IWGRP | S_IWOTH))) + mode = read_only; + #if 0 + /* FIXME: why is this code not in? below we fix it so that a caller + wanting RO doesn't get RW. smb_revalidate_inode does some + optimization based on access mode. tail -f needs it to be correct. + + We must open rw since we don't do the open if called a second time + with different 'wish'. Is that not supported by smb servers? */ + if (!(wish & (O_WRONLY | O_RDWR))) + mode = read_only; + #endif + + res = -ENOMEM; + if (! (req = smb_alloc_request(server, PAGE_SIZE))) + goto out; + + retry: + p = smb_setup_header(req, SMBopen, 2, 0); + WSET(req->rq_header, smb_vwv0, mode); + WSET(req->rq_header, smb_vwv1, aSYSTEM | aHIDDEN | aDIR); + res = smb_simple_encode_path(req, &p, dentry, NULL); + if (res < 0) + goto out_free; + smb_setup_bcc(req, p); + + res = smb_request_ok(req, SMBopen, 7, 0); + if (res != 0) { + if (mode == read_write && + (res == -EACCES || res == -ETXTBSY || res == -EROFS)) + { + VERBOSE("%s/%s R/W failed, error=%d, retrying R/O\n", + DENTRY_PATH(dentry), res); + mode = read_only; + req->rq_flags = 0; + goto retry; + } + goto out_free; + } + /* We should now have data in vwv[0..6]. */ + + ei->fileid = WVAL(req->rq_header, smb_vwv0); + ei->attr = WVAL(req->rq_header, smb_vwv1); + /* smb_vwv2 has mtime */ + /* smb_vwv4 has size */ + ei->access = (WVAL(req->rq_header, smb_vwv6) & SMB_ACCMASK); + ei->open = server->generation; + + out_free: + smb_rput(req); + out: + return res; + } + + /* + * Make sure the file is open, and check that the access + * is compatible with the desired access. + */ + int + smb_open(struct dentry *dentry, int wish) + { + struct inode *inode = dentry->d_inode; + int result; + __u16 access; + + result = -ENOENT; + if (!inode) { + printk(KERN_ERR "smb_open: no inode for dentry %s/%s\n", + DENTRY_PATH(dentry)); + goto out; + } + + if (!smb_is_open(inode)) { + struct smb_sb_info *server = server_from_inode(inode); + result = 0; + if (!smb_is_open(inode)) + result = smb_proc_open(server, dentry, wish); + if (result) + goto out; + /* + * A successful open means the path is still valid ... + */ + smb_renew_times(dentry); + } + + /* + * Check whether the access is compatible with the desired mode. + */ + result = 0; + access = SMB_I(inode)->access; + if (access != wish && access != SMB_O_RDWR) { + PARANOIA("%s/%s access denied, access=%x, wish=%x\n", + DENTRY_PATH(dentry), access, wish); + result = -EACCES; + } + out: + return result; + } + + static int + smb_proc_close(struct smb_sb_info *server, __u16 fileid, __u32 mtime) + { + struct smb_request *req; + int result = -ENOMEM; + + if (! (req = smb_alloc_request(server, 0))) + goto out; + + smb_setup_header(req, SMBclose, 3, 0); + WSET(req->rq_header, smb_vwv0, fileid); + DSET(req->rq_header, smb_vwv1, utc2local(server, mtime)); + req->rq_flags |= SMB_REQ_NORETRY; + result = smb_request_ok(req, SMBclose, 0, 0); + + smb_rput(req); + out: + return result; + } + + /* + * Win NT 4.0 has an apparent bug in that it fails to update the + * modify time when writing to a file. As a workaround, we update + * both modify and access time locally, and post the times to the + * server when closing the file. + */ + static int + smb_proc_close_inode(struct smb_sb_info *server, struct inode * ino) + { + struct smb_inode_info *ei = SMB_I(ino); + int result = 0; + if (smb_is_open(ino)) + { + /* + * We clear the open flag in advance, in case another + * process observes the value while we block below. + */ + ei->open = 0; + + /* + * Kludge alert: SMB timestamps are accurate only to + * two seconds ... round the times to avoid needless + * cache invalidations! + */ + if (ino->i_mtime.tv_sec & 1) { + ino->i_mtime.tv_sec--; + ino->i_mtime.tv_nsec = 0; + } + if (ino->i_atime.tv_sec & 1) { + ino->i_atime.tv_sec--; + ino->i_atime.tv_nsec = 0; + } + /* + * If the file is open with write permissions, + * update the time stamps to sync mtime and atime. + */ + if ((server->opt.capabilities & SMB_CAP_UNIX) == 0 && + (server->opt.protocol >= SMB_PROTOCOL_LANMAN2) && + !(ei->access == SMB_O_RDONLY)) + { + struct smb_fattr fattr; + smb_get_inode_attr(ino, &fattr); + smb_proc_setattr_ext(server, ino, &fattr); + } + + result = smb_proc_close(server, ei->fileid, ino->i_mtime.tv_sec); + /* + * Force a revalidation after closing ... some servers + * don't post the size until the file has been closed. + */ + if (server->opt.protocol < SMB_PROTOCOL_NT1) + ei->oldmtime = 0; + ei->closed = jiffies; + } + return result; + } + + int + smb_close(struct inode *ino) + { + int result = 0; + + if (smb_is_open(ino)) { + struct smb_sb_info *server = server_from_inode(ino); + result = smb_proc_close_inode(server, ino); + } + return result; + } + + /* + * This is used to close a file following a failed instantiate. + * Since we don't have an inode, we can't use any of the above. + */ + int + smb_close_fileid(struct dentry *dentry, __u16 fileid) + { + struct smb_sb_info *server = server_from_dentry(dentry); + int result; + + result = smb_proc_close(server, fileid, get_seconds()); + return result; + } + + /* In smb_proc_read and smb_proc_write we do not retry, because the + file-id would not be valid after a reconnection. */ + + static void + smb_proc_read_data(struct smb_request *req) + { + req->rq_iov[0].iov_base = req->rq_buffer; + req->rq_iov[0].iov_len = 3; + + req->rq_iov[1].iov_base = req->rq_page; + req->rq_iov[1].iov_len = req->rq_rsize; + req->rq_iovlen = 2; + + req->rq_rlen = smb_len(req->rq_header) + 4 - req->rq_bytes_recvd; + } + + static int + smb_proc_read(struct inode *inode, loff_t offset, int count, char *data) + { + struct smb_sb_info *server = server_from_inode(inode); + __u16 returned_count, data_len; + unsigned char *buf; + int result; + struct smb_request *req; + u8 rbuf[4]; + + result = -ENOMEM; + if (! (req = smb_alloc_request(server, 0))) + goto out; + + smb_setup_header(req, SMBread, 5, 0); + buf = req->rq_header; + WSET(buf, smb_vwv0, SMB_I(inode)->fileid); + WSET(buf, smb_vwv1, count); + DSET(buf, smb_vwv2, offset); + WSET(buf, smb_vwv4, 0); + + req->rq_page = data; + req->rq_rsize = count; + req->rq_callback = smb_proc_read_data; + req->rq_buffer = rbuf; + req->rq_flags |= SMB_REQ_NORETRY | SMB_REQ_STATIC; + + result = smb_request_ok(req, SMBread, 5, -1); + if (result < 0) + goto out_free; + returned_count = WVAL(req->rq_header, smb_vwv0); + + data_len = WVAL(rbuf, 1); + + if (returned_count != data_len) { + printk(KERN_NOTICE "smb_proc_read: returned != data_len\n"); + printk(KERN_NOTICE "smb_proc_read: ret_c=%d, data_len=%d\n", + returned_count, data_len); + } + result = data_len; + + out_free: + smb_rput(req); + out: + VERBOSE("ino=%ld, fileid=%d, count=%d, result=%d\n", + inode->i_ino, SMB_I(inode)->fileid, count, result); + return result; + } + + static int + smb_proc_write(struct inode *inode, loff_t offset, int count, const char *data) + { + struct smb_sb_info *server = server_from_inode(inode); + int result; + u16 fileid = SMB_I(inode)->fileid; + u8 buf[4]; + struct smb_request *req; + + result = -ENOMEM; + if (! (req = smb_alloc_request(server, 0))) + goto out; + + VERBOSE("ino=%ld, fileid=%d, count=%d@%Ld\n", + inode->i_ino, fileid, count, offset); + + smb_setup_header(req, SMBwrite, 5, count + 3); + WSET(req->rq_header, smb_vwv0, fileid); + WSET(req->rq_header, smb_vwv1, count); + DSET(req->rq_header, smb_vwv2, offset); + WSET(req->rq_header, smb_vwv4, 0); + + buf[0] = 1; + WSET(buf, 1, count); /* yes, again ... */ + req->rq_iov[1].iov_base = buf; + req->rq_iov[1].iov_len = 3; + req->rq_iov[2].iov_base = (char *) data; + req->rq_iov[2].iov_len = count; + req->rq_iovlen = 3; + req->rq_flags |= SMB_REQ_NORETRY; + + result = smb_request_ok(req, SMBwrite, 1, 0); + if (result >= 0) + result = WVAL(req->rq_header, smb_vwv0); + + smb_rput(req); + out: + return result; + } + + /* + * In smb_proc_readX and smb_proc_writeX we do not retry, because the + * file-id would not be valid after a reconnection. + */ + + #define SMB_READX_MAX_PAD 64 + static void + smb_proc_readX_data(struct smb_request *req) + { + /* header length, excluding the netbios length (-4) */ + int hdrlen = SMB_HEADER_LEN + req->rq_resp_wct*2 - 2; + int data_off = WVAL(req->rq_header, smb_vwv6); + + /* + * Some genius made the padding to the data bytes arbitrary. + * So we must first calculate the amount of padding used by the server. + */ + data_off -= hdrlen; + if (data_off > SMB_READX_MAX_PAD || data_off < 0) { + PARANOIA("offset is larger than SMB_READX_MAX_PAD or negative!\n"); + PARANOIA("%d > %d || %d < 0\n", data_off, SMB_READX_MAX_PAD, data_off); + req->rq_rlen = req->rq_bufsize + 1; + return; + } + req->rq_iov[0].iov_base = req->rq_buffer; + req->rq_iov[0].iov_len = data_off; + + req->rq_iov[1].iov_base = req->rq_page; + req->rq_iov[1].iov_len = req->rq_rsize; + req->rq_iovlen = 2; + + req->rq_rlen = smb_len(req->rq_header) + 4 - req->rq_bytes_recvd; + } + + static int + smb_proc_readX(struct inode *inode, loff_t offset, int count, char *data) + { + struct smb_sb_info *server = server_from_inode(inode); + unsigned char *buf; + int result; + struct smb_request *req; + static char pad[SMB_READX_MAX_PAD]; + + result = -ENOMEM; + if (! (req = smb_alloc_request(server, 0))) + goto out; + + smb_setup_header(req, SMBreadX, 12, 0); + buf = req->rq_header; + WSET(buf, smb_vwv0, 0x00ff); + WSET(buf, smb_vwv1, 0); + WSET(buf, smb_vwv2, SMB_I(inode)->fileid); + DSET(buf, smb_vwv3, (u32)offset); /* low 32 bits */ + WSET(buf, smb_vwv5, count); + WSET(buf, smb_vwv6, 0); + DSET(buf, smb_vwv7, 0); + WSET(buf, smb_vwv9, 0); + DSET(buf, smb_vwv10, (u32)(offset >> 32)); /* high 32 bits */ + WSET(buf, smb_vwv11, 0); + + req->rq_page = data; + req->rq_rsize = count; + req->rq_callback = smb_proc_readX_data; + req->rq_buffer = pad; + req->rq_bufsize = SMB_READX_MAX_PAD; + req->rq_flags |= SMB_REQ_STATIC | SMB_REQ_NORETRY; + + result = smb_request_ok(req, SMBreadX, 12, -1); + if (result < 0) + goto out_free; + result = WVAL(req->rq_header, smb_vwv5); + + out_free: + smb_rput(req); + out: + VERBOSE("ino=%ld, fileid=%d, count=%d, result=%d\n", + inode->i_ino, SMB_I(inode)->fileid, count, result); + return result; + } + + static int + smb_proc_writeX(struct inode *inode, loff_t offset, int count, const char *data) + { + struct smb_sb_info *server = server_from_inode(inode); + int result; + u8 *p; + static u8 pad[4]; + struct smb_request *req; + + result = -ENOMEM; + if (! (req = smb_alloc_request(server, 0))) + goto out; + + VERBOSE("ino=%ld, fileid=%d, count=%d@%Ld\n", + inode->i_ino, SMB_I(inode)->fileid, count, offset); + + p = smb_setup_header(req, SMBwriteX, 14, count + 1); + WSET(req->rq_header, smb_vwv0, 0x00ff); + WSET(req->rq_header, smb_vwv1, 0); + WSET(req->rq_header, smb_vwv2, SMB_I(inode)->fileid); + DSET(req->rq_header, smb_vwv3, (u32)offset); /* low 32 bits */ + DSET(req->rq_header, smb_vwv5, 0); + WSET(req->rq_header, smb_vwv7, 0); /* write mode */ + WSET(req->rq_header, smb_vwv8, 0); + WSET(req->rq_header, smb_vwv9, 0); + WSET(req->rq_header, smb_vwv10, count); /* data length */ + WSET(req->rq_header, smb_vwv11, smb_vwv12 + 2 + 1); + DSET(req->rq_header, smb_vwv12, (u32)(offset >> 32)); + + req->rq_iov[1].iov_base = pad; + req->rq_iov[1].iov_len = 1; + req->rq_iov[2].iov_base = (char *) data; + req->rq_iov[2].iov_len = count; + req->rq_iovlen = 3; + req->rq_flags |= SMB_REQ_NORETRY; + + result = smb_request_ok(req, SMBwriteX, 6, 0); + if (result >= 0) + result = WVAL(req->rq_header, smb_vwv2); + + smb_rput(req); + out: + return result; + } + + int + smb_proc_create(struct dentry *dentry, __u16 attr, time_t ctime, __u16 *fileid) + { + struct smb_sb_info *server = server_from_dentry(dentry); + char *p; + int result; + struct smb_request *req; + + result = -ENOMEM; + if (! (req = smb_alloc_request(server, PAGE_SIZE))) + goto out; + + p = smb_setup_header(req, SMBcreate, 3, 0); + WSET(req->rq_header, smb_vwv0, attr); + DSET(req->rq_header, smb_vwv1, utc2local(server, ctime)); + result = smb_simple_encode_path(req, &p, dentry, NULL); + if (result < 0) + goto out_free; + smb_setup_bcc(req, p); + + result = smb_request_ok(req, SMBcreate, 1, 0); + if (result < 0) + goto out_free; + + *fileid = WVAL(req->rq_header, smb_vwv0); + result = 0; + + out_free: + smb_rput(req); + out: + return result; + } + + int + smb_proc_mv(struct dentry *old_dentry, struct dentry *new_dentry) + { + struct smb_sb_info *server = server_from_dentry(old_dentry); + char *p; + int result; + struct smb_request *req; + + result = -ENOMEM; + if (! (req = smb_alloc_request(server, PAGE_SIZE))) + goto out; + + p = smb_setup_header(req, SMBmv, 1, 0); + WSET(req->rq_header, smb_vwv0, aSYSTEM | aHIDDEN | aDIR); + result = smb_simple_encode_path(req, &p, old_dentry, NULL); + if (result < 0) + goto out_free; + result = smb_simple_encode_path(req, &p, new_dentry, NULL); + if (result < 0) + goto out_free; + smb_setup_bcc(req, p); + + if ((result = smb_request_ok(req, SMBmv, 0, 0)) < 0) + goto out_free; + result = 0; + + out_free: + smb_rput(req); + out: + return result; + } + + /* + * Code common to mkdir and rmdir. + */ + static int + smb_proc_generic_command(struct dentry *dentry, __u8 command) + { + struct smb_sb_info *server = server_from_dentry(dentry); + char *p; + int result; + struct smb_request *req; + + result = -ENOMEM; + if (! (req = smb_alloc_request(server, PAGE_SIZE))) + goto out; + + p = smb_setup_header(req, command, 0, 0); + result = smb_simple_encode_path(req, &p, dentry, NULL); + if (result < 0) + goto out_free; + smb_setup_bcc(req, p); + + result = smb_request_ok(req, command, 0, 0); + if (result < 0) + goto out_free; + result = 0; + + out_free: + smb_rput(req); + out: + return result; + } + + int + smb_proc_mkdir(struct dentry *dentry) + { + return smb_proc_generic_command(dentry, SMBmkdir); + } + + int + smb_proc_rmdir(struct dentry *dentry) + { + return smb_proc_generic_command(dentry, SMBrmdir); + } + + #if SMBFS_POSIX_UNLINK + /* + * Removes readonly attribute from a file. Used by unlink to give posix + * semantics. + */ + static int + smb_set_rw(struct dentry *dentry,struct smb_sb_info *server) + { + int result; + struct smb_fattr fattr; + + /* FIXME: cifsUE should allow removing a readonly file. */ + + /* first get current attribute */ + smb_init_dirent(server, &fattr); + result = server->ops->getattr(server, dentry, &fattr); + smb_finish_dirent(server, &fattr); + if (result < 0) + return result; + + /* if RONLY attribute is set, remove it */ + if (fattr.attr & aRONLY) { /* read only attribute is set */ + fattr.attr &= ~aRONLY; + result = smb_proc_setattr_core(server, dentry, fattr.attr); + } + return result; + } + #endif + + int + smb_proc_unlink(struct dentry *dentry) + { + struct smb_sb_info *server = server_from_dentry(dentry); + int flag = 0; + char *p; + int result; + struct smb_request *req; + + result = -ENOMEM; + if (! (req = smb_alloc_request(server, PAGE_SIZE))) + goto out; + + retry: + p = smb_setup_header(req, SMBunlink, 1, 0); + WSET(req->rq_header, smb_vwv0, aSYSTEM | aHIDDEN); + result = smb_simple_encode_path(req, &p, dentry, NULL); + if (result < 0) + goto out_free; + smb_setup_bcc(req, p); + + if ((result = smb_request_ok(req, SMBunlink, 0, 0)) < 0) { + #if SMBFS_POSIX_UNLINK + if (result == -EACCES && !flag) { + /* Posix semantics is for the read-only state + of a file to be ignored in unlink(). In the + SMB world a unlink() is refused on a + read-only file. To make things easier for + unix users we try to override the files + permission if the unlink fails with the + right error. + This introduces a race condition that could + lead to a file being written by someone who + shouldn't have access, but as far as I can + tell that is unavoidable */ + + /* remove RONLY attribute and try again */ + result = smb_set_rw(dentry,server); + if (result == 0) { + flag = 1; + req->rq_flags = 0; + goto retry; + } + } + #endif + goto out_free; + } + result = 0; + + out_free: + smb_rput(req); + out: + return result; + } + + int + smb_proc_flush(struct smb_sb_info *server, __u16 fileid) + { + int result; + struct smb_request *req; + + result = -ENOMEM; + if (! (req = smb_alloc_request(server, 0))) + goto out; + + smb_setup_header(req, SMBflush, 1, 0); + WSET(req->rq_header, smb_vwv0, fileid); + req->rq_flags |= SMB_REQ_NORETRY; + result = smb_request_ok(req, SMBflush, 0, 0); + + smb_rput(req); + out: + return result; + } + + static int + smb_proc_trunc32(struct inode *inode, loff_t length) + { + /* + * Writing 0bytes is old-SMB magic for truncating files. + * MAX_NON_LFS should prevent this from being called with a too + * large offset. + */ + return smb_proc_write(inode, length, 0, NULL); + } + + static int + smb_proc_trunc64(struct inode *inode, loff_t length) + { + struct smb_sb_info *server = server_from_inode(inode); + int result; + char *param; + char *data; + struct smb_request *req; + + result = -ENOMEM; + if (! (req = smb_alloc_request(server, 14))) + goto out; + + param = req->rq_buffer; + data = req->rq_buffer + 6; + + /* FIXME: must we also set allocation size? winNT seems to do that */ + WSET(param, 0, SMB_I(inode)->fileid); + WSET(param, 2, SMB_SET_FILE_END_OF_FILE_INFO); + WSET(param, 4, 0); + LSET(data, 0, length); + + req->rq_trans2_command = TRANSACT2_SETFILEINFO; + req->rq_ldata = 8; + req->rq_data = data; + req->rq_lparm = 6; + req->rq_parm = param; + req->rq_flags |= SMB_REQ_NORETRY; + result = smb_add_request(req); + if (result < 0) + goto out_free; + + result = 0; + if (req->rq_rcls != 0) + result = smb_errno(req); + + out_free: + smb_rput(req); + out: + return result; + } + + static int + smb_proc_trunc95(struct inode *inode, loff_t length) + { + struct smb_sb_info *server = server_from_inode(inode); + int result = smb_proc_trunc32(inode, length); + + /* + * win9x doesn't appear to update the size immediately. + * It will return the old file size after the truncate, + * confusing smbfs. So we force an update. + * + * FIXME: is this still necessary? + */ + smb_proc_flush(server, SMB_I(inode)->fileid); + return result; + } + + static void + smb_init_dirent(struct smb_sb_info *server, struct smb_fattr *fattr) + { + memset(fattr, 0, sizeof(*fattr)); + + fattr->f_nlink = 1; + fattr->f_uid = server->mnt->uid; + fattr->f_gid = server->mnt->gid; + fattr->f_unix = 0; + } + + static void + smb_finish_dirent(struct smb_sb_info *server, struct smb_fattr *fattr) + { + if (fattr->f_unix) + return; + + fattr->f_mode = server->mnt->file_mode; + if (fattr->attr & aDIR) { + fattr->f_mode = server->mnt->dir_mode; + fattr->f_size = SMB_ST_BLKSIZE; + } + /* Check the read-only flag */ + if (fattr->attr & aRONLY) + fattr->f_mode &= ~(S_IWUSR | S_IWGRP | S_IWOTH); + + /* How many 512 byte blocks do we need for this file? */ + fattr->f_blocks = 0; + if (fattr->f_size != 0) + fattr->f_blocks = 1 + ((fattr->f_size-1) >> 9); + return; + } + + void + smb_init_root_dirent(struct smb_sb_info *server, struct smb_fattr *fattr, + struct super_block *sb) + { + smb_init_dirent(server, fattr); + fattr->attr = aDIR; + fattr->f_ino = 2; /* traditional root inode number */ + fattr->f_mtime = current_fs_time(sb); + smb_finish_dirent(server, fattr); + } + + /* + * Decode a dirent for old protocols + * + * qname is filled with the decoded, and possibly translated, name. + * fattr receives decoded attributes + * + * Bugs Noted: + * (1) Pathworks servers may pad the name with extra spaces. + */ + static char * + smb_decode_short_dirent(struct smb_sb_info *server, char *p, + struct qstr *qname, struct smb_fattr *fattr, + unsigned char *name_buf) + { + int len; + + /* + * SMB doesn't have a concept of inode numbers ... + */ + smb_init_dirent(server, fattr); + fattr->f_ino = 0; /* FIXME: do we need this? */ + + p += SMB_STATUS_SIZE; /* reserved (search_status) */ + fattr->attr = *p; + fattr->f_mtime.tv_sec = date_dos2unix(server, WVAL(p, 3), WVAL(p, 1)); + fattr->f_mtime.tv_nsec = 0; + fattr->f_size = DVAL(p, 5); + fattr->f_ctime = fattr->f_mtime; + fattr->f_atime = fattr->f_mtime; + qname->name = p + 9; + len = strnlen(qname->name, 12); + + /* + * Trim trailing blanks for Pathworks servers + */ + while (len > 2 && qname->name[len-1] == ' ') + len--; + + smb_finish_dirent(server, fattr); + + #if 0 + /* FIXME: These only work for ascii chars, and recent smbmount doesn't + allow the flag to be set anyway. It kills const. Remove? */ + switch (server->opt.case_handling) { + case SMB_CASE_UPPER: + str_upper(entry->name, len); + break; + case SMB_CASE_LOWER: + str_lower(entry->name, len); + break; + default: + break; + } + #endif + + qname->len = 0; + len = server->ops->convert(name_buf, SMB_MAXNAMELEN, + qname->name, len, + server->remote_nls, server->local_nls); + if (len > 0) { + qname->len = len; + qname->name = name_buf; + DEBUG1("len=%d, name=%.*s\n",qname->len,qname->len,qname->name); + } + + return p + 22; + } + + /* + * This routine is used to read in directory entries from the network. + * Note that it is for short directory name seeks, i.e.: protocol < + * SMB_PROTOCOL_LANMAN2 + */ + static int + smb_proc_readdir_short(struct file *filp, void *dirent, filldir_t filldir, + struct smb_cache_control *ctl) + { + struct dentry *dir = filp->f_path.dentry; + struct smb_sb_info *server = server_from_dentry(dir); + struct qstr qname; + struct smb_fattr fattr; + char *p; + int result; + int i, first, entries_seen, entries; + int entries_asked = (server->opt.max_xmit - 100) / SMB_DIRINFO_SIZE; + __u16 bcc; + __u16 count; + char status[SMB_STATUS_SIZE]; + static struct qstr mask = { + .name = "*.*", + .len = 3, + }; + unsigned char *last_status; + struct smb_request *req; + unsigned char *name_buf; + + VERBOSE("%s/%s\n", DENTRY_PATH(dir)); + + lock_kernel(); + + result = -ENOMEM; + if (! (name_buf = kmalloc(SMB_MAXNAMELEN, GFP_KERNEL))) + goto out; + + first = 1; + entries = 0; + entries_seen = 2; /* implicit . and .. */ + + result = -ENOMEM; + if (! (req = smb_alloc_request(server, server->opt.max_xmit))) + goto out_name; + + while (1) { + p = smb_setup_header(req, SMBsearch, 2, 0); + WSET(req->rq_header, smb_vwv0, entries_asked); + WSET(req->rq_header, smb_vwv1, aDIR); + if (first == 1) { + result = smb_simple_encode_path(req, &p, dir, &mask); + if (result < 0) + goto out_free; + if (p + 3 > (char *)req->rq_buffer + req->rq_bufsize) { + result = -ENAMETOOLONG; + goto out_free; + } + *p++ = 5; + WSET(p, 0, 0); + p += 2; + first = 0; + } else { + if (p + 5 + SMB_STATUS_SIZE > + (char *)req->rq_buffer + req->rq_bufsize) { + result = -ENAMETOOLONG; + goto out_free; + } + + *p++ = 4; + *p++ = 0; + *p++ = 5; + WSET(p, 0, SMB_STATUS_SIZE); + p += 2; + memcpy(p, status, SMB_STATUS_SIZE); + p += SMB_STATUS_SIZE; + } + + smb_setup_bcc(req, p); + + result = smb_request_ok(req, SMBsearch, 1, -1); + if (result < 0) { + if ((req->rq_rcls == ERRDOS) && + (req->rq_err == ERRnofiles)) + break; + goto out_free; + } + count = WVAL(req->rq_header, smb_vwv0); + if (count <= 0) + break; + + result = -EIO; + bcc = smb_bcc(req->rq_header); + if (bcc != count * SMB_DIRINFO_SIZE + 3) + goto out_free; + p = req->rq_buffer + 3; + + + /* Make sure the response fits in the buffer. Fixed sized + entries means we don't have to check in the decode loop. */ + + last_status = req->rq_buffer + 3 + (count-1) * SMB_DIRINFO_SIZE; + + if (last_status + SMB_DIRINFO_SIZE >= + req->rq_buffer + req->rq_bufsize) { + printk(KERN_ERR "smb_proc_readdir_short: " + "last dir entry outside buffer! " + "%d@%p %d@%p\n", SMB_DIRINFO_SIZE, last_status, + req->rq_bufsize, req->rq_buffer); + goto out_free; + } + + /* Read the last entry into the status field. */ + memcpy(status, last_status, SMB_STATUS_SIZE); + + + /* Now we are ready to parse smb directory entries. */ + + for (i = 0; i < count; i++) { + p = smb_decode_short_dirent(server, p, + &qname, &fattr, name_buf); + if (qname.len == 0) + continue; + + if (entries_seen == 2 && qname.name[0] == '.') { + if (qname.len == 1) + continue; + if (qname.name[1] == '.' && qname.len == 2) + continue; + } + if (!smb_fill_cache(filp, dirent, filldir, ctl, + &qname, &fattr)) + ; /* stop reading? */ + entries_seen++; + } + } + result = entries; + + out_free: + smb_rput(req); + out_name: + kfree(name_buf); + out: + unlock_kernel(); + return result; + } + + static void smb_decode_unix_basic(struct smb_fattr *fattr, struct smb_sb_info *server, char *p) + { + u64 size, disk_bytes; + + /* FIXME: verify nls support. all is sent as utf8? */ + + fattr->f_unix = 1; + fattr->f_mode = 0; + + /* FIXME: use the uniqueID from the remote instead? */ + /* 0 L file size in bytes */ + /* 8 L file size on disk in bytes (block count) */ + /* 40 L uid */ + /* 48 L gid */ + /* 56 W file type */ + /* 60 L devmajor */ + /* 68 L devminor */ + /* 76 L unique ID (inode) */ + /* 84 L permissions */ + /* 92 L link count */ + + size = LVAL(p, 0); + disk_bytes = LVAL(p, 8); + + /* + * Some samba versions round up on-disk byte usage + * to 1MB boundaries, making it useless. When seeing + * that, use the size instead. + */ + if (!(disk_bytes & 0xfffff)) + disk_bytes = size+511; + + fattr->f_size = size; + fattr->f_blocks = disk_bytes >> 9; + fattr->f_ctime = smb_ntutc2unixutc(LVAL(p, 16)); + fattr->f_atime = smb_ntutc2unixutc(LVAL(p, 24)); + fattr->f_mtime = smb_ntutc2unixutc(LVAL(p, 32)); + + if (server->mnt->flags & SMB_MOUNT_UID) + fattr->f_uid = server->mnt->uid; + else + fattr->f_uid = LVAL(p, 40); + + if (server->mnt->flags & SMB_MOUNT_GID) + fattr->f_gid = server->mnt->gid; + else + fattr->f_gid = LVAL(p, 48); + + fattr->f_mode |= smb_filetype_to_mode(WVAL(p, 56)); + + if (S_ISBLK(fattr->f_mode) || S_ISCHR(fattr->f_mode)) { + __u64 major = LVAL(p, 60); + __u64 minor = LVAL(p, 68); + + fattr->f_rdev = MKDEV(major & 0xffffffff, minor & 0xffffffff); + if (MAJOR(fattr->f_rdev) != (major & 0xffffffff) || + MINOR(fattr->f_rdev) != (minor & 0xffffffff)) + fattr->f_rdev = 0; + } + + fattr->f_mode |= LVAL(p, 84); + + if ( (server->mnt->flags & SMB_MOUNT_DMODE) && + (S_ISDIR(fattr->f_mode)) ) + fattr->f_mode = (server->mnt->dir_mode & S_IRWXUGO) | S_IFDIR; + else if ( (server->mnt->flags & SMB_MOUNT_FMODE) && + !(S_ISDIR(fattr->f_mode)) ) + fattr->f_mode = (server->mnt->file_mode & S_IRWXUGO) | + (fattr->f_mode & S_IFMT); + + } + + /* + * Interpret a long filename structure using the specified info level: + * level 1 for anything below NT1 protocol + * level 260 for NT1 protocol + * + * qname is filled with the decoded, and possibly translated, name + * fattr receives decoded attributes. + * + * Bugs Noted: + * (1) Win NT 4.0 appends a null byte to names and counts it in the length! + */ + static char * + smb_decode_long_dirent(struct smb_sb_info *server, char *p, int level, + struct qstr *qname, struct smb_fattr *fattr, + unsigned char *name_buf) + { + char *result; + unsigned int len = 0; + int n; + __u16 date, time; + int unicode = (server->mnt->flags & SMB_MOUNT_UNICODE); + + /* + * SMB doesn't have a concept of inode numbers ... + */ + smb_init_dirent(server, fattr); + fattr->f_ino = 0; /* FIXME: do we need this? */ + + switch (level) { + case 1: + len = *((unsigned char *) p + 22); + qname->name = p + 23; + result = p + 24 + len; + + date = WVAL(p, 0); + time = WVAL(p, 2); + fattr->f_ctime.tv_sec = date_dos2unix(server, date, time); + fattr->f_ctime.tv_nsec = 0; + + date = WVAL(p, 4); + time = WVAL(p, 6); + fattr->f_atime.tv_sec = date_dos2unix(server, date, time); + fattr->f_atime.tv_nsec = 0; + + date = WVAL(p, 8); + time = WVAL(p, 10); + fattr->f_mtime.tv_sec = date_dos2unix(server, date, time); + fattr->f_mtime.tv_nsec = 0; + fattr->f_size = DVAL(p, 12); + /* ULONG allocation size */ + fattr->attr = WVAL(p, 20); + + VERBOSE("info 1 at %p, len=%d, name=%.*s\n", + p, len, len, qname->name); + break; + case 260: + result = p + WVAL(p, 0); + len = DVAL(p, 60); + if (len > 255) len = 255; + /* NT4 null terminates, unless we are using unicode ... */ + qname->name = p + 94; + if (!unicode && len && qname->name[len-1] == '\0') + len--; + + fattr->f_ctime = smb_ntutc2unixutc(LVAL(p, 8)); + fattr->f_atime = smb_ntutc2unixutc(LVAL(p, 16)); + fattr->f_mtime = smb_ntutc2unixutc(LVAL(p, 24)); + /* change time (32) */ + fattr->f_size = LVAL(p, 40); + /* alloc size (48) */ + fattr->attr = DVAL(p, 56); + + VERBOSE("info 260 at %p, len=%d, name=%.*s\n", + p, len, len, qname->name); + break; + case SMB_FIND_FILE_UNIX: + result = p + WVAL(p, 0); + qname->name = p + 108; + + len = strlen(qname->name); + /* FIXME: should we check the length?? */ + + p += 8; + smb_decode_unix_basic(fattr, server, p); + VERBOSE("info SMB_FIND_FILE_UNIX at %p, len=%d, name=%.*s\n", + p, len, len, qname->name); + break; + default: + PARANOIA("Unknown info level %d\n", level); + result = p + WVAL(p, 0); + goto out; + } + + smb_finish_dirent(server, fattr); + + #if 0 + /* FIXME: These only work for ascii chars, and recent smbmount doesn't + allow the flag to be set anyway. Remove? */ + switch (server->opt.case_handling) { + case SMB_CASE_UPPER: + str_upper(qname->name, len); + break; + case SMB_CASE_LOWER: + str_lower(qname->name, len); + break; + default: + break; + } + #endif + + qname->len = 0; + n = server->ops->convert(name_buf, SMB_MAXNAMELEN, + qname->name, len, + server->remote_nls, server->local_nls); + if (n > 0) { + qname->len = n; + qname->name = name_buf; + } + + out: + return result; + } + + /* findfirst/findnext flags */ + #define SMB_CLOSE_AFTER_FIRST (1<<0) + #define SMB_CLOSE_IF_END (1<<1) + #define SMB_REQUIRE_RESUME_KEY (1<<2) + #define SMB_CONTINUE_BIT (1<<3) + + /* + * Note: samba-2.0.7 (at least) has a very similar routine, cli_list, in + * source/libsmb/clilist.c. When looking for smb bugs in the readdir code, + * go there for advise. + * + * Bugs Noted: + * (1) When using Info Level 1 Win NT 4.0 truncates directory listings + * for certain patterns of names and/or lengths. The breakage pattern + * is completely reproducible and can be toggled by the creation of a + * single file. (E.g. echo hi >foo breaks, rm -f foo works.) + */ + static int + smb_proc_readdir_long(struct file *filp, void *dirent, filldir_t filldir, + struct smb_cache_control *ctl) + { + struct dentry *dir = filp->f_path.dentry; + struct smb_sb_info *server = server_from_dentry(dir); + struct qstr qname; + struct smb_fattr fattr; + + unsigned char *p, *lastname; + char *mask, *param; + __u16 command; + int first, entries_seen; + + /* Both NT and OS/2 accept info level 1 (but see note below). */ + int info_level = 260; + const int max_matches = 512; + + unsigned int ff_searchcount = 0; + unsigned int ff_eos = 0; + unsigned int ff_lastname = 0; + unsigned int ff_dir_handle = 0; + unsigned int loop_count = 0; + unsigned int mask_len, i; + int result; + struct smb_request *req; + unsigned char *name_buf; + static struct qstr star = { + .name = "*", + .len = 1, + }; + + lock_kernel(); + + /* + * We always prefer unix style. Use info level 1 for older + * servers that don't do 260. + */ + if (server->opt.capabilities & SMB_CAP_UNIX) + info_level = SMB_FIND_FILE_UNIX; + else if (server->opt.protocol < SMB_PROTOCOL_NT1) + info_level = 1; + + result = -ENOMEM; + if (! (name_buf = kmalloc(SMB_MAXNAMELEN+2, GFP_KERNEL))) + goto out; + if (! (req = smb_alloc_request(server, server->opt.max_xmit))) + goto out_name; + param = req->rq_buffer; + + /* + * Encode the initial path + */ + mask = param + 12; + + result = smb_encode_path(server, mask, SMB_MAXPATHLEN+1, dir, &star); + if (result <= 0) + goto out_free; + mask_len = result - 1; /* mask_len is strlen, not #bytes */ + result = 0; + first = 1; + VERBOSE("starting mask_len=%d, mask=%s\n", mask_len, mask); + + entries_seen = 2; + ff_eos = 0; + + while (ff_eos == 0) { + loop_count += 1; + if (loop_count > 10) { + printk(KERN_WARNING "smb_proc_readdir_long: " + "Looping in FIND_NEXT??\n"); + result = -EIO; + break; + } + + if (first != 0) { + command = TRANSACT2_FINDFIRST; + WSET(param, 0, aSYSTEM | aHIDDEN | aDIR); + WSET(param, 2, max_matches); /* max count */ + WSET(param, 4, SMB_CLOSE_IF_END); + WSET(param, 6, info_level); + DSET(param, 8, 0); + } else { + command = TRANSACT2_FINDNEXT; + + VERBOSE("handle=0x%X, lastname=%d, mask=%.*s\n", + ff_dir_handle, ff_lastname, mask_len, mask); + + WSET(param, 0, ff_dir_handle); /* search handle */ + WSET(param, 2, max_matches); /* max count */ + WSET(param, 4, info_level); + DSET(param, 6, 0); + WSET(param, 10, SMB_CONTINUE_BIT|SMB_CLOSE_IF_END); + } + + req->rq_trans2_command = command; + req->rq_ldata = 0; + req->rq_data = NULL; + req->rq_lparm = 12 + mask_len + 1; + req->rq_parm = param; + req->rq_flags = 0; + result = smb_add_request(req); + if (result < 0) { + PARANOIA("error=%d, breaking\n", result); + break; + } + + if (req->rq_rcls == ERRSRV && req->rq_err == ERRerror) { + /* a damn Win95 bug - sometimes it clags if you + ask it too fast */ + schedule_timeout_interruptible(msecs_to_jiffies(200)); + continue; + } + + if (req->rq_rcls != 0) { + result = smb_errno(req); + PARANOIA("name=%s, result=%d, rcls=%d, err=%d\n", + mask, result, req->rq_rcls, req->rq_err); + break; + } + + /* parse out some important return info */ + if (first != 0) { + ff_dir_handle = WVAL(req->rq_parm, 0); + ff_searchcount = WVAL(req->rq_parm, 2); + ff_eos = WVAL(req->rq_parm, 4); + ff_lastname = WVAL(req->rq_parm, 8); + } else { + ff_searchcount = WVAL(req->rq_parm, 0); + ff_eos = WVAL(req->rq_parm, 2); + ff_lastname = WVAL(req->rq_parm, 6); + } + + if (ff_searchcount == 0) + break; + + /* Now we are ready to parse smb directory entries. */ + + /* point to the data bytes */ + p = req->rq_data; + for (i = 0; i < ff_searchcount; i++) { + /* make sure we stay within the buffer */ + if (p >= req->rq_data + req->rq_ldata) { + printk(KERN_ERR "smb_proc_readdir_long: " + "dirent pointer outside buffer! " + "%p %d@%p\n", + p, req->rq_ldata, req->rq_data); + result = -EIO; /* always a comm. error? */ + goto out_free; + } + + p = smb_decode_long_dirent(server, p, info_level, + &qname, &fattr, name_buf); + + /* ignore . and .. from the server */ + if (entries_seen == 2 && qname.name[0] == '.') { + if (qname.len == 1) + continue; + if (qname.name[1] == '.' && qname.len == 2) + continue; + } + + if (!smb_fill_cache(filp, dirent, filldir, ctl, + &qname, &fattr)) + ; /* stop reading? */ + entries_seen++; + } + + VERBOSE("received %d entries, eos=%d\n", ff_searchcount,ff_eos); + + /* + * We might need the lastname for continuations. + * + * Note that some servers (win95?) point to the filename and + * others (NT4, Samba using NT1) to the dir entry. We assume + * here that those who do not point to a filename do not need + * this info to continue the listing. + * + * OS/2 needs this and talks infolevel 1. + * NetApps want lastname with infolevel 260. + * win2k want lastname with infolevel 260, and points to + * the record not to the name. + * Samba+CifsUnixExt doesn't need lastname. + * + * Both are happy if we return the data they point to. So we do. + * (FIXME: above is not true with win2k) + */ + mask_len = 0; + if (info_level != SMB_FIND_FILE_UNIX && + ff_lastname > 0 && ff_lastname < req->rq_ldata) { + lastname = req->rq_data + ff_lastname; + + switch (info_level) { + case 260: + mask_len = req->rq_ldata - ff_lastname; + break; + case 1: + /* lastname points to a length byte */ + mask_len = *lastname++; + if (ff_lastname + 1 + mask_len > req->rq_ldata) + mask_len = req->rq_ldata - ff_lastname - 1; + break; + } + + /* + * Update the mask string for the next message. + */ + if (mask_len > 255) + mask_len = 255; + if (mask_len) + strncpy(mask, lastname, mask_len); + } + mask_len = strnlen(mask, mask_len); + VERBOSE("new mask, len=%d@%d of %d, mask=%.*s\n", + mask_len, ff_lastname, req->rq_ldata, mask_len, mask); + + first = 0; + loop_count = 0; + } + + out_free: + smb_rput(req); + out_name: + kfree(name_buf); + out: + unlock_kernel(); + return result; + } + + /* + * This version uses the trans2 TRANSACT2_FINDFIRST message + * to get the attribute data. + * + * Bugs Noted: + */ + static int + smb_proc_getattr_ff(struct smb_sb_info *server, struct dentry *dentry, + struct smb_fattr *fattr) + { + char *param, *mask; + __u16 date, time; + int mask_len, result; + struct smb_request *req; + + result = -ENOMEM; + if (! (req = smb_alloc_request(server, PAGE_SIZE))) + goto out; + param = req->rq_buffer; + mask = param + 12; + + mask_len = smb_encode_path(server, mask, SMB_MAXPATHLEN+1, dentry,NULL); + if (mask_len < 0) { + result = mask_len; + goto out_free; + } + VERBOSE("name=%s, len=%d\n", mask, mask_len); + WSET(param, 0, aSYSTEM | aHIDDEN | aDIR); + WSET(param, 2, 1); /* max count */ + WSET(param, 4, 1); /* close after this call */ + WSET(param, 6, 1); /* info_level */ + DSET(param, 8, 0); + + req->rq_trans2_command = TRANSACT2_FINDFIRST; + req->rq_ldata = 0; + req->rq_data = NULL; + req->rq_lparm = 12 + mask_len; + req->rq_parm = param; + req->rq_flags = 0; + result = smb_add_request(req); + if (result < 0) + goto out_free; + if (req->rq_rcls != 0) { + result = smb_errno(req); + #ifdef SMBFS_PARANOIA + if (result != -ENOENT) + PARANOIA("error for %s, rcls=%d, err=%d\n", + mask, req->rq_rcls, req->rq_err); + #endif + goto out_free; + } + /* Make sure we got enough data ... */ + result = -EINVAL; + if (req->rq_ldata < 22 || WVAL(req->rq_parm, 2) != 1) { + PARANOIA("bad result for %s, len=%d, count=%d\n", + mask, req->rq_ldata, WVAL(req->rq_parm, 2)); + goto out_free; + } + + /* + * Decode the response into the fattr ... + */ + date = WVAL(req->rq_data, 0); + time = WVAL(req->rq_data, 2); + fattr->f_ctime.tv_sec = date_dos2unix(server, date, time); + fattr->f_ctime.tv_nsec = 0; + + date = WVAL(req->rq_data, 4); + time = WVAL(req->rq_data, 6); + fattr->f_atime.tv_sec = date_dos2unix(server, date, time); + fattr->f_atime.tv_nsec = 0; + + date = WVAL(req->rq_data, 8); + time = WVAL(req->rq_data, 10); + fattr->f_mtime.tv_sec = date_dos2unix(server, date, time); + fattr->f_mtime.tv_nsec = 0; + VERBOSE("name=%s, date=%x, time=%x, mtime=%ld\n", + mask, date, time, fattr->f_mtime.tv_sec); + fattr->f_size = DVAL(req->rq_data, 12); + /* ULONG allocation size */ + fattr->attr = WVAL(req->rq_data, 20); + result = 0; + + out_free: + smb_rput(req); + out: + return result; + } + + static int + smb_proc_getattr_core(struct smb_sb_info *server, struct dentry *dir, + struct smb_fattr *fattr) + { + int result; + char *p; + struct smb_request *req; + + result = -ENOMEM; + if (! (req = smb_alloc_request(server, PAGE_SIZE))) + goto out; + + p = smb_setup_header(req, SMBgetatr, 0, 0); + result = smb_simple_encode_path(req, &p, dir, NULL); + if (result < 0) + goto out_free; + smb_setup_bcc(req, p); + + if ((result = smb_request_ok(req, SMBgetatr, 10, 0)) < 0) + goto out_free; + fattr->attr = WVAL(req->rq_header, smb_vwv0); + fattr->f_mtime.tv_sec = local2utc(server, DVAL(req->rq_header, smb_vwv1)); + fattr->f_mtime.tv_nsec = 0; + fattr->f_size = DVAL(req->rq_header, smb_vwv3); + fattr->f_ctime = fattr->f_mtime; + fattr->f_atime = fattr->f_mtime; + #ifdef SMBFS_DEBUG_TIMESTAMP + printk("getattr_core: %s/%s, mtime=%ld\n", + DENTRY_PATH(dir), fattr->f_mtime); + #endif + result = 0; + + out_free: + smb_rput(req); + out: + return result; + } + + /* + * Bugs Noted: + * (1) Win 95 swaps the date and time fields in the standard info level. + */ + static int + smb_proc_getattr_trans2(struct smb_sb_info *server, struct dentry *dir, + struct smb_request *req, int infolevel) + { + char *p, *param; + int result; + + param = req->rq_buffer; + WSET(param, 0, infolevel); + DSET(param, 2, 0); + result = smb_encode_path(server, param+6, SMB_MAXPATHLEN+1, dir, NULL); + if (result < 0) + goto out; + p = param + 6 + result; + + req->rq_trans2_command = TRANSACT2_QPATHINFO; + req->rq_ldata = 0; + req->rq_data = NULL; + req->rq_lparm = p - param; + req->rq_parm = param; + req->rq_flags = 0; + result = smb_add_request(req); + if (result < 0) + goto out; + if (req->rq_rcls != 0) { + VERBOSE("for %s: result=%d, rcls=%d, err=%d\n", + ¶m[6], result, req->rq_rcls, req->rq_err); + result = smb_errno(req); + goto out; + } + result = -ENOENT; + if (req->rq_ldata < 22) { + PARANOIA("not enough data for %s, len=%d\n", + ¶m[6], req->rq_ldata); + goto out; + } + + result = 0; + out: + return result; + } + + static int + smb_proc_getattr_trans2_std(struct smb_sb_info *server, struct dentry *dir, + struct smb_fattr *attr) + { + u16 date, time; + int off_date = 0, off_time = 2; + int result; + struct smb_request *req; + + result = -ENOMEM; + if (! (req = smb_alloc_request(server, PAGE_SIZE))) + goto out; + + result = smb_proc_getattr_trans2(server, dir, req, SMB_INFO_STANDARD); + if (result < 0) + goto out_free; + + /* + * Kludge alert: Win 95 swaps the date and time field, + * contrary to the CIFS docs and Win NT practice. + */ + if (server->mnt->flags & SMB_MOUNT_WIN95) { + off_date = 2; + off_time = 0; + } + date = WVAL(req->rq_data, off_date); + time = WVAL(req->rq_data, off_time); + attr->f_ctime.tv_sec = date_dos2unix(server, date, time); + attr->f_ctime.tv_nsec = 0; + + date = WVAL(req->rq_data, 4 + off_date); + time = WVAL(req->rq_data, 4 + off_time); + attr->f_atime.tv_sec = date_dos2unix(server, date, time); + attr->f_atime.tv_nsec = 0; + + date = WVAL(req->rq_data, 8 + off_date); + time = WVAL(req->rq_data, 8 + off_time); + attr->f_mtime.tv_sec = date_dos2unix(server, date, time); + attr->f_mtime.tv_nsec = 0; + #ifdef SMBFS_DEBUG_TIMESTAMP + printk(KERN_DEBUG "getattr_trans2: %s/%s, date=%x, time=%x, mtime=%ld\n", + DENTRY_PATH(dir), date, time, attr->f_mtime); + #endif + attr->f_size = DVAL(req->rq_data, 12); + attr->attr = WVAL(req->rq_data, 20); + + out_free: + smb_rput(req); + out: + return result; + } + + static int + smb_proc_getattr_trans2_all(struct smb_sb_info *server, struct dentry *dir, + struct smb_fattr *attr) + { + struct smb_request *req; + int result; + + result = -ENOMEM; + if (! (req = smb_alloc_request(server, PAGE_SIZE))) + goto out; + + result = smb_proc_getattr_trans2(server, dir, req, + SMB_QUERY_FILE_ALL_INFO); + if (result < 0) + goto out_free; + + attr->f_ctime = smb_ntutc2unixutc(LVAL(req->rq_data, 0)); + attr->f_atime = smb_ntutc2unixutc(LVAL(req->rq_data, 8)); + attr->f_mtime = smb_ntutc2unixutc(LVAL(req->rq_data, 16)); + /* change (24) */ + attr->attr = WVAL(req->rq_data, 32); + /* pad? (34) */ + /* allocated size (40) */ + attr->f_size = LVAL(req->rq_data, 48); + + out_free: + smb_rput(req); + out: + return result; + } + + static int + smb_proc_getattr_unix(struct smb_sb_info *server, struct dentry *dir, + struct smb_fattr *attr) + { + struct smb_request *req; + int result; + + result = -ENOMEM; + if (! (req = smb_alloc_request(server, PAGE_SIZE))) + goto out; + + result = smb_proc_getattr_trans2(server, dir, req, + SMB_QUERY_FILE_UNIX_BASIC); + if (result < 0) + goto out_free; + + smb_decode_unix_basic(attr, server, req->rq_data); + + out_free: + smb_rput(req); + out: + return result; + } + + static int + smb_proc_getattr_95(struct smb_sb_info *server, struct dentry *dir, + struct smb_fattr *attr) + { + struct inode *inode = dir->d_inode; + int result; + + /* FIXME: why not use the "all" version? */ + result = smb_proc_getattr_trans2_std(server, dir, attr); + if (result < 0) + goto out; + + /* + * None of the getattr versions here can make win9x return the right + * filesize if there are changes made to an open file. + * A seek-to-end does return the right size, but we only need to do + * that on files we have written. + */ + if (inode && SMB_I(inode)->flags & SMB_F_LOCALWRITE && + smb_is_open(inode)) + { + __u16 fileid = SMB_I(inode)->fileid; + attr->f_size = smb_proc_seek(server, fileid, 2, 0); + } + + out: + return result; + } + + static int + smb_proc_ops_wait(struct smb_sb_info *server) + { + int result; + + result = wait_event_interruptible_timeout(server->conn_wq, + server->conn_complete, 30*HZ); + + if (!result || signal_pending(current)) + return -EIO; + + return 0; + } + + static int + smb_proc_getattr_null(struct smb_sb_info *server, struct dentry *dir, + struct smb_fattr *fattr) + { + int result; + + if (smb_proc_ops_wait(server) < 0) + return -EIO; + + smb_init_dirent(server, fattr); + result = server->ops->getattr(server, dir, fattr); + smb_finish_dirent(server, fattr); + + return result; + } + + static int + smb_proc_readdir_null(struct file *filp, void *dirent, filldir_t filldir, + struct smb_cache_control *ctl) + { + struct smb_sb_info *server = server_from_dentry(filp->f_path.dentry); + + if (smb_proc_ops_wait(server) < 0) + return -EIO; + + return server->ops->readdir(filp, dirent, filldir, ctl); + } + + int + smb_proc_getattr(struct dentry *dir, struct smb_fattr *fattr) + { + struct smb_sb_info *server = server_from_dentry(dir); + int result; + + smb_init_dirent(server, fattr); + result = server->ops->getattr(server, dir, fattr); + smb_finish_dirent(server, fattr); + + return result; + } + + + /* + * Because of bugs in the core protocol, we use this only to set + * attributes. See smb_proc_settime() below for timestamp handling. + * + * Bugs Noted: + * (1) If mtime is non-zero, both Win 3.1 and Win 95 fail + * with an undocumented error (ERRDOS code 50). Setting + * mtime to 0 allows the attributes to be set. + * (2) The extra parameters following the name string aren't + * in the CIFS docs, but seem to be necessary for operation. + */ + static int + smb_proc_setattr_core(struct smb_sb_info *server, struct dentry *dentry, + __u16 attr) + { + char *p; + int result; + struct smb_request *req; + + result = -ENOMEM; + if (! (req = smb_alloc_request(server, PAGE_SIZE))) + goto out; + + p = smb_setup_header(req, SMBsetatr, 8, 0); + WSET(req->rq_header, smb_vwv0, attr); + DSET(req->rq_header, smb_vwv1, 0); /* mtime */ + WSET(req->rq_header, smb_vwv3, 0); /* reserved values */ + WSET(req->rq_header, smb_vwv4, 0); + WSET(req->rq_header, smb_vwv5, 0); + WSET(req->rq_header, smb_vwv6, 0); + WSET(req->rq_header, smb_vwv7, 0); + result = smb_simple_encode_path(req, &p, dentry, NULL); + if (result < 0) + goto out_free; + if (p + 2 > (char *)req->rq_buffer + req->rq_bufsize) { + result = -ENAMETOOLONG; + goto out_free; + } + *p++ = 4; + *p++ = 0; + smb_setup_bcc(req, p); + + result = smb_request_ok(req, SMBsetatr, 0, 0); + if (result < 0) + goto out_free; + result = 0; + + out_free: + smb_rput(req); + out: + return result; + } + + /* + * Because of bugs in the trans2 setattr messages, we must set + * attributes and timestamps separately. The core SMBsetatr + * message seems to be the only reliable way to set attributes. + */ + int + smb_proc_setattr(struct dentry *dir, struct smb_fattr *fattr) + { + struct smb_sb_info *server = server_from_dentry(dir); + int result; + + VERBOSE("setting %s/%s, open=%d\n", + DENTRY_PATH(dir), smb_is_open(dir->d_inode)); + result = smb_proc_setattr_core(server, dir, fattr->attr); + return result; + } + + /* + * Sets the timestamps for an file open with write permissions. + */ + static int + smb_proc_setattr_ext(struct smb_sb_info *server, + struct inode *inode, struct smb_fattr *fattr) + { + __u16 date, time; + int result; + struct smb_request *req; + + result = -ENOMEM; + if (! (req = smb_alloc_request(server, 0))) + goto out; + + smb_setup_header(req, SMBsetattrE, 7, 0); + WSET(req->rq_header, smb_vwv0, SMB_I(inode)->fileid); + /* We don't change the creation time */ + WSET(req->rq_header, smb_vwv1, 0); + WSET(req->rq_header, smb_vwv2, 0); + date_unix2dos(server, fattr->f_atime.tv_sec, &date, &time); + WSET(req->rq_header, smb_vwv3, date); + WSET(req->rq_header, smb_vwv4, time); + date_unix2dos(server, fattr->f_mtime.tv_sec, &date, &time); + WSET(req->rq_header, smb_vwv5, date); + WSET(req->rq_header, smb_vwv6, time); + #ifdef SMBFS_DEBUG_TIMESTAMP + printk(KERN_DEBUG "smb_proc_setattr_ext: date=%d, time=%d, mtime=%ld\n", + date, time, fattr->f_mtime); + #endif + + req->rq_flags |= SMB_REQ_NORETRY; + result = smb_request_ok(req, SMBsetattrE, 0, 0); + if (result < 0) + goto out_free; + result = 0; + out_free: + smb_rput(req); + out: + return result; + } + + /* + * Bugs Noted: + * (1) The TRANSACT2_SETPATHINFO message under Win NT 4.0 doesn't + * set the file's attribute flags. + */ + static int + smb_proc_setattr_trans2(struct smb_sb_info *server, + struct dentry *dir, struct smb_fattr *fattr) + { + __u16 date, time; + char *p, *param; + int result; + char data[26]; + struct smb_request *req; + + result = -ENOMEM; + if (! (req = smb_alloc_request(server, PAGE_SIZE))) + goto out; + param = req->rq_buffer; + + WSET(param, 0, 1); /* Info level SMB_INFO_STANDARD */ + DSET(param, 2, 0); + result = smb_encode_path(server, param+6, SMB_MAXPATHLEN+1, dir, NULL); + if (result < 0) + goto out_free; + p = param + 6 + result; + + WSET(data, 0, 0); /* creation time */ + WSET(data, 2, 0); + date_unix2dos(server, fattr->f_atime.tv_sec, &date, &time); + WSET(data, 4, date); + WSET(data, 6, time); + date_unix2dos(server, fattr->f_mtime.tv_sec, &date, &time); + WSET(data, 8, date); + WSET(data, 10, time); + #ifdef SMBFS_DEBUG_TIMESTAMP + printk(KERN_DEBUG "setattr_trans2: %s/%s, date=%x, time=%x, mtime=%ld\n", + DENTRY_PATH(dir), date, time, fattr->f_mtime); + #endif + DSET(data, 12, 0); /* size */ + DSET(data, 16, 0); /* blksize */ + WSET(data, 20, 0); /* attr */ + DSET(data, 22, 0); /* ULONG EA size */ + + req->rq_trans2_command = TRANSACT2_SETPATHINFO; + req->rq_ldata = 26; + req->rq_data = data; + req->rq_lparm = p - param; + req->rq_parm = param; + req->rq_flags = 0; + result = smb_add_request(req); + if (result < 0) + goto out_free; + result = 0; + if (req->rq_rcls != 0) + result = smb_errno(req); + + out_free: + smb_rput(req); + out: + return result; + } + + /* + * ATTR_MODE 0x001 + * ATTR_UID 0x002 + * ATTR_GID 0x004 + * ATTR_SIZE 0x008 + * ATTR_ATIME 0x010 + * ATTR_MTIME 0x020 + * ATTR_CTIME 0x040 + * ATTR_ATIME_SET 0x080 + * ATTR_MTIME_SET 0x100 + * ATTR_FORCE 0x200 + * ATTR_ATTR_FLAG 0x400 + * + * major/minor should only be set by mknod. + */ + int + smb_proc_setattr_unix(struct dentry *d, struct iattr *attr, + unsigned int major, unsigned int minor) + { + struct smb_sb_info *server = server_from_dentry(d); + u64 nttime; + char *p, *param; + int result; + char data[100]; + struct smb_request *req; + + result = -ENOMEM; + if (! (req = smb_alloc_request(server, PAGE_SIZE))) + goto out; + param = req->rq_buffer; + + DEBUG1("valid flags = 0x%04x\n", attr->ia_valid); + + WSET(param, 0, SMB_SET_FILE_UNIX_BASIC); + DSET(param, 2, 0); + result = smb_encode_path(server, param+6, SMB_MAXPATHLEN+1, d, NULL); + if (result < 0) + goto out_free; + p = param + 6 + result; + + /* 0 L file size in bytes */ + /* 8 L file size on disk in bytes (block count) */ + /* 40 L uid */ + /* 48 L gid */ + /* 56 W file type enum */ + /* 60 L devmajor */ + /* 68 L devminor */ + /* 76 L unique ID (inode) */ + /* 84 L permissions */ + /* 92 L link count */ + LSET(data, 0, SMB_SIZE_NO_CHANGE); + LSET(data, 8, SMB_SIZE_NO_CHANGE); + LSET(data, 16, SMB_TIME_NO_CHANGE); + LSET(data, 24, SMB_TIME_NO_CHANGE); + LSET(data, 32, SMB_TIME_NO_CHANGE); + LSET(data, 40, SMB_UID_NO_CHANGE); + LSET(data, 48, SMB_GID_NO_CHANGE); + DSET(data, 56, smb_filetype_from_mode(attr->ia_mode)); + LSET(data, 60, major); + LSET(data, 68, minor); + LSET(data, 76, 0); + LSET(data, 84, SMB_MODE_NO_CHANGE); + LSET(data, 92, 0); + + if (attr->ia_valid & ATTR_SIZE) { + LSET(data, 0, attr->ia_size); + LSET(data, 8, 0); /* can't set anyway */ + } + + /* + * FIXME: check the conversion function it the correct one + * + * we can't set ctime but we might as well pass this to the server + * and let it ignore it. + */ + if (attr->ia_valid & ATTR_CTIME) { + nttime = smb_unixutc2ntutc(attr->ia_ctime); + LSET(data, 16, nttime); + } + if (attr->ia_valid & ATTR_ATIME) { + nttime = smb_unixutc2ntutc(attr->ia_atime); + LSET(data, 24, nttime); + } + if (attr->ia_valid & ATTR_MTIME) { + nttime = smb_unixutc2ntutc(attr->ia_mtime); + LSET(data, 32, nttime); + } + + if (attr->ia_valid & ATTR_UID) { + LSET(data, 40, attr->ia_uid); + } + if (attr->ia_valid & ATTR_GID) { + LSET(data, 48, attr->ia_gid); + } + + if (attr->ia_valid & ATTR_MODE) { + LSET(data, 84, attr->ia_mode); + } + + req->rq_trans2_command = TRANSACT2_SETPATHINFO; + req->rq_ldata = 100; + req->rq_data = data; + req->rq_lparm = p - param; + req->rq_parm = param; + req->rq_flags = 0; + result = smb_add_request(req); + + out_free: + smb_rput(req); + out: + return result; + } + + + /* + * Set the modify and access timestamps for a file. + * + * Incredibly enough, in all of SMB there is no message to allow + * setting both attributes and timestamps at once. + * + * Bugs Noted: + * (1) Win 95 doesn't support the TRANSACT2_SETFILEINFO message + * with info level 1 (INFO_STANDARD). + * (2) Win 95 seems not to support setting directory timestamps. + * (3) Under the core protocol apparently the only way to set the + * timestamp is to open and close the file. + */ + int + smb_proc_settime(struct dentry *dentry, struct smb_fattr *fattr) + { + struct smb_sb_info *server = server_from_dentry(dentry); + struct inode *inode = dentry->d_inode; + int result; + + VERBOSE("setting %s/%s, open=%d\n", + DENTRY_PATH(dentry), smb_is_open(inode)); + + /* setting the time on a Win95 server fails (tridge) */ + if (server->opt.protocol >= SMB_PROTOCOL_LANMAN2 && + !(server->mnt->flags & SMB_MOUNT_WIN95)) { + if (smb_is_open(inode) && SMB_I(inode)->access != SMB_O_RDONLY) + result = smb_proc_setattr_ext(server, inode, fattr); + else + result = smb_proc_setattr_trans2(server, dentry, fattr); + } else { + /* + * Fail silently on directories ... timestamp can't be set? + */ + result = 0; + if (S_ISREG(inode->i_mode)) { + /* + * Set the mtime by opening and closing the file. + * Note that the file is opened read-only, but this + * still allows us to set the date (tridge) + */ + result = -EACCES; + if (!smb_is_open(inode)) + smb_proc_open(server, dentry, SMB_O_RDONLY); + if (smb_is_open(inode)) { + inode->i_mtime = fattr->f_mtime; + result = smb_proc_close_inode(server, inode); + } + } + } + + return result; + } + + int + smb_proc_dskattr(struct dentry *dentry, struct kstatfs *attr) + { + struct smb_sb_info *server = SMB_SB(dentry->d_sb); + int result; + char *p; + long unit; + struct smb_request *req; + + result = -ENOMEM; + if (! (req = smb_alloc_request(server, 0))) + goto out; + + smb_setup_header(req, SMBdskattr, 0, 0); + if ((result = smb_request_ok(req, SMBdskattr, 5, 0)) < 0) + goto out_free; + p = SMB_VWV(req->rq_header); + unit = (WVAL(p, 2) * WVAL(p, 4)) >> SMB_ST_BLKSHIFT; + attr->f_blocks = WVAL(p, 0) * unit; + attr->f_bsize = SMB_ST_BLKSIZE; + attr->f_bavail = attr->f_bfree = WVAL(p, 6) * unit; + result = 0; + + out_free: + smb_rput(req); + out: + return result; + } + + int + smb_proc_read_link(struct smb_sb_info *server, struct dentry *d, + char *buffer, int len) + { + char *p, *param; + int result; + struct smb_request *req; + + DEBUG1("readlink of %s/%s\n", DENTRY_PATH(d)); + + result = -ENOMEM; + if (! (req = smb_alloc_request(server, PAGE_SIZE))) + goto out; + param = req->rq_buffer; + + WSET(param, 0, SMB_QUERY_FILE_UNIX_LINK); + DSET(param, 2, 0); + result = smb_encode_path(server, param+6, SMB_MAXPATHLEN+1, d, NULL); + if (result < 0) + goto out_free; + p = param + 6 + result; + + req->rq_trans2_command = TRANSACT2_QPATHINFO; + req->rq_ldata = 0; + req->rq_data = NULL; + req->rq_lparm = p - param; + req->rq_parm = param; + req->rq_flags = 0; + result = smb_add_request(req); + if (result < 0) + goto out_free; + DEBUG1("for %s: result=%d, rcls=%d, err=%d\n", + ¶m[6], result, req->rq_rcls, req->rq_err); + + /* copy data up to the \0 or buffer length */ + result = len; + if (req->rq_ldata < len) + result = req->rq_ldata; + strncpy(buffer, req->rq_data, result); + + out_free: + smb_rput(req); + out: + return result; + } + + + /* + * Create a symlink object called dentry which points to oldpath. + * Samba does not permit dangling links but returns a suitable error message. + */ + int + smb_proc_symlink(struct smb_sb_info *server, struct dentry *d, + const char *oldpath) + { + char *p, *param; + int result; + struct smb_request *req; + + result = -ENOMEM; + if (! (req = smb_alloc_request(server, PAGE_SIZE))) + goto out; + param = req->rq_buffer; + + WSET(param, 0, SMB_SET_FILE_UNIX_LINK); + DSET(param, 2, 0); + result = smb_encode_path(server, param + 6, SMB_MAXPATHLEN+1, d, NULL); + if (result < 0) + goto out_free; + p = param + 6 + result; + + req->rq_trans2_command = TRANSACT2_SETPATHINFO; + req->rq_ldata = strlen(oldpath) + 1; + req->rq_data = (char *) oldpath; + req->rq_lparm = p - param; + req->rq_parm = param; + req->rq_flags = 0; + result = smb_add_request(req); + if (result < 0) + goto out_free; + + DEBUG1("for %s: result=%d, rcls=%d, err=%d\n", + ¶m[6], result, req->rq_rcls, req->rq_err); + result = 0; + + out_free: + smb_rput(req); + out: + return result; + } + + /* + * Create a hard link object called new_dentry which points to dentry. + */ + int + smb_proc_link(struct smb_sb_info *server, struct dentry *dentry, + struct dentry *new_dentry) + { + char *p, *param; + int result; + struct smb_request *req; + + result = -ENOMEM; + if (! (req = smb_alloc_request(server, PAGE_SIZE))) + goto out; + param = req->rq_buffer; + + WSET(param, 0, SMB_SET_FILE_UNIX_HLINK); + DSET(param, 2, 0); + result = smb_encode_path(server, param + 6, SMB_MAXPATHLEN+1, + new_dentry, NULL); + if (result < 0) + goto out_free; + p = param + 6 + result; + + /* Grr, pointless separation of parameters and data ... */ + req->rq_data = p; + req->rq_ldata = smb_encode_path(server, p, SMB_MAXPATHLEN+1, + dentry, NULL); + + req->rq_trans2_command = TRANSACT2_SETPATHINFO; + req->rq_lparm = p - param; + req->rq_parm = param; + req->rq_flags = 0; + result = smb_add_request(req); + if (result < 0) + goto out_free; + + DEBUG1("for %s: result=%d, rcls=%d, err=%d\n", + ¶m[6], result, req->rq_rcls, req->rq_err); + result = 0; + + out_free: + smb_rput(req); + out: + return result; + } + + static int + smb_proc_query_cifsunix(struct smb_sb_info *server) + { + int result; + int major, minor; + u64 caps; + char param[2]; + struct smb_request *req; + + result = -ENOMEM; + if (! (req = smb_alloc_request(server, 100))) + goto out; + + WSET(param, 0, SMB_QUERY_CIFS_UNIX_INFO); + + req->rq_trans2_command = TRANSACT2_QFSINFO; + req->rq_ldata = 0; + req->rq_data = NULL; + req->rq_lparm = 2; + req->rq_parm = param; + req->rq_flags = 0; + result = smb_add_request(req); + if (result < 0) + goto out_free; + + if (req->rq_ldata < 12) { + PARANOIA("Not enough data\n"); + goto out_free; + } + major = WVAL(req->rq_data, 0); + minor = WVAL(req->rq_data, 2); + + DEBUG1("Server implements CIFS Extensions for UNIX systems v%d.%d\n", + major, minor); + /* FIXME: verify that we are ok with this major/minor? */ + + caps = LVAL(req->rq_data, 4); + DEBUG1("Server capabilities 0x%016llx\n", caps); + + out_free: + smb_rput(req); + out: + return result; + } + + + static void + install_ops(struct smb_ops *dst, struct smb_ops *src) + { + memcpy(dst, src, sizeof(void *) * SMB_OPS_NUM_STATIC); + } + + /* < LANMAN2 */ + static struct smb_ops smb_ops_core = + { + .read = smb_proc_read, + .write = smb_proc_write, + .readdir = smb_proc_readdir_short, + .getattr = smb_proc_getattr_core, + .truncate = smb_proc_trunc32, + }; + + /* LANMAN2, OS/2, others? */ + static struct smb_ops smb_ops_os2 = + { + .read = smb_proc_read, + .write = smb_proc_write, + .readdir = smb_proc_readdir_long, + .getattr = smb_proc_getattr_trans2_std, + .truncate = smb_proc_trunc32, + }; + + /* Win95, and possibly some NetApp versions too */ + static struct smb_ops smb_ops_win95 = + { + .read = smb_proc_read, /* does not support 12word readX */ + .write = smb_proc_write, + .readdir = smb_proc_readdir_long, + .getattr = smb_proc_getattr_95, + .truncate = smb_proc_trunc95, + }; + + /* Samba, NT4 and NT5 */ + static struct smb_ops smb_ops_winNT = + { + .read = smb_proc_readX, + .write = smb_proc_writeX, + .readdir = smb_proc_readdir_long, + .getattr = smb_proc_getattr_trans2_all, + .truncate = smb_proc_trunc64, + }; + + /* Samba w/ unix extensions. Others? */ + static struct smb_ops smb_ops_unix = + { + .read = smb_proc_readX, + .write = smb_proc_writeX, + .readdir = smb_proc_readdir_long, + .getattr = smb_proc_getattr_unix, + /* FIXME: core/ext/time setattr needs to be cleaned up! */ + /* .setattr = smb_proc_setattr_unix, */ + .truncate = smb_proc_trunc64, + }; + + /* Place holder until real ops are in place */ + static struct smb_ops smb_ops_null = + { + .readdir = smb_proc_readdir_null, + .getattr = smb_proc_getattr_null, + }; + + void smb_install_null_ops(struct smb_ops *ops) + { + install_ops(ops, &smb_ops_null); + } diff --cc fs/compat_ioctl.c index d0ad09d57789,34cf03cd791f..410ed188faa1 --- a/fs/compat_ioctl.c +++ b/fs/compat_ioctl.c @@@ -1457,11 -1501,11 +1438,7 @@@ static long do_ioctl_trans(int fd, unsi case MTIOCGET32: case MTIOCPOS32: return mt_ioctl_trans(fd, cmd, argp); - /* Raw devices */ - case RAW_SETBIND: - case RAW_GETBIND: - return raw_ioctl(fd, cmd, argp); #endif - /* One SMB ioctl needs translations. */ - #define SMB_IOC_GETMOUNTUID_32 _IOR('u', 1, compat_uid_t) - case SMB_IOC_GETMOUNTUID_32: - return do_smb_getmountuid(fd, cmd, argp); /* Serial */ case TIOCGSERIAL: case TIOCSSERIAL: