From: Al Viro Date: Sun, 24 Feb 2013 18:49:08 +0000 (-0500) Subject: fix compat truncate/ftruncate X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=3f6d078d4accfff8b114f968259a060bfdc7c682;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git fix compat truncate/ftruncate Signed-off-by: Al Viro --- diff --git a/arch/arm64/include/asm/unistd32.h b/arch/arm64/include/asm/unistd32.h index 8153f1a43f0a..12f22492df4c 100644 --- a/arch/arm64/include/asm/unistd32.h +++ b/arch/arm64/include/asm/unistd32.h @@ -113,8 +113,8 @@ __SYSCALL(88, sys_reboot) __SYSCALL(89, sys_ni_syscall) /* 89 was sys_readdir */ __SYSCALL(90, sys_ni_syscall) /* 90 was sys_mmap */ __SYSCALL(91, sys_munmap) -__SYSCALL(92, sys_truncate) -__SYSCALL(93, sys_ftruncate) +__SYSCALL(92, compat_sys_truncate) +__SYSCALL(93, compat_sys_ftruncate) __SYSCALL(94, sys_fchmod) __SYSCALL(95, sys_fchown16) __SYSCALL(96, sys_getpriority) diff --git a/arch/mips/kernel/scall64-o32.S b/arch/mips/kernel/scall64-o32.S index 063cd0d6ddd2..20b100f9d360 100644 --- a/arch/mips/kernel/scall64-o32.S +++ b/arch/mips/kernel/scall64-o32.S @@ -284,8 +284,8 @@ sys_call_table: PTR compat_sys_old_readdir PTR sys_mips_mmap /* 4090 */ PTR sys_munmap - PTR sys_truncate - PTR sys_ftruncate + PTR compat_sys_truncate + PTR compat_sys_ftruncate PTR sys_fchmod PTR sys_fchown /* 4095 */ PTR sys_getpriority diff --git a/arch/parisc/kernel/syscall_table.S b/arch/parisc/kernel/syscall_table.S index d0efc0aeb612..884b91b028f0 100644 --- a/arch/parisc/kernel/syscall_table.S +++ b/arch/parisc/kernel/syscall_table.S @@ -165,8 +165,8 @@ ENTRY_SAME(mmap2) ENTRY_SAME(mmap) /* 90 */ ENTRY_SAME(munmap) - ENTRY_SAME(truncate) - ENTRY_SAME(ftruncate) + ENTRY_COMP(truncate) + ENTRY_COMP(ftruncate) ENTRY_SAME(fchmod) ENTRY_SAME(fchown) /* 95 */ ENTRY_SAME(getpriority) diff --git a/arch/powerpc/kernel/sys_ppc32.c b/arch/powerpc/kernel/sys_ppc32.c index 5677a36f450b..d0bafc0cdf06 100644 --- a/arch/powerpc/kernel/sys_ppc32.c +++ b/arch/powerpc/kernel/sys_ppc32.c @@ -146,18 +146,6 @@ asmlinkage long compat_sys_sendfile64_wrapper(u32 out_fd, u32 in_fd, (off_t __user *)offset, count); } -long compat_sys_truncate(const char __user * path, u32 length) -{ - /* sign extend length */ - return sys_truncate(path, (int)length); -} - -long compat_sys_ftruncate(int fd, u32 length) -{ - /* sign extend length */ - return sys_ftruncate(fd, (int)length); -} - unsigned long compat_sys_mmap2(unsigned long addr, size_t len, unsigned long prot, unsigned long flags, unsigned long fd, unsigned long pgoff) diff --git a/arch/s390/kernel/compat_wrapper.S b/arch/s390/kernel/compat_wrapper.S index 2b1a3a03244f..3c98c4dc5aca 100644 --- a/arch/s390/kernel/compat_wrapper.S +++ b/arch/s390/kernel/compat_wrapper.S @@ -325,16 +325,6 @@ ENTRY(sys32_munmap_wrapper) llgfr %r3,%r3 # size_t jg sys_munmap # branch to system call -ENTRY(sys32_truncate_wrapper) - llgtr %r2,%r2 # const char * - lgfr %r3,%r3 # long - jg sys_truncate # branch to system call - -ENTRY(sys32_ftruncate_wrapper) - llgfr %r2,%r2 # unsigned int - llgfr %r3,%r3 # unsigned long - jg sys_ftruncate # branch to system call - ENTRY(sys32_fchmod_wrapper) llgfr %r2,%r2 # unsigned int llgfr %r3,%r3 # mode_t diff --git a/arch/s390/kernel/syscalls.S b/arch/s390/kernel/syscalls.S index 0e5262f01007..630b935d1284 100644 --- a/arch/s390/kernel/syscalls.S +++ b/arch/s390/kernel/syscalls.S @@ -100,8 +100,8 @@ SYSCALL(sys_reboot,sys_reboot,sys32_reboot_wrapper) SYSCALL(sys_ni_syscall,sys_ni_syscall,old32_readdir_wrapper) /* old readdir syscall */ SYSCALL(sys_old_mmap,sys_old_mmap,old32_mmap_wrapper) /* 90 */ SYSCALL(sys_munmap,sys_munmap,sys32_munmap_wrapper) -SYSCALL(sys_truncate,sys_truncate,sys32_truncate_wrapper) -SYSCALL(sys_ftruncate,sys_ftruncate,sys32_ftruncate_wrapper) +SYSCALL(sys_truncate,sys_truncate,compat_sys_truncate) +SYSCALL(sys_ftruncate,sys_ftruncate,compat_sys_ftruncate) SYSCALL(sys_fchmod,sys_fchmod,sys32_fchmod_wrapper) SYSCALL(sys_fchown16,sys_ni_syscall,sys32_fchown16_wrapper) /* 95 old fchown16 syscall*/ SYSCALL(sys_getpriority,sys_getpriority,sys32_getpriority_wrapper) diff --git a/arch/sparc/kernel/sys32.S b/arch/sparc/kernel/sys32.S index be3d65a3c270..240a3cecc11e 100644 --- a/arch/sparc/kernel/sys32.S +++ b/arch/sparc/kernel/sys32.S @@ -52,7 +52,6 @@ SIGN1(sys32_recvmsg, compat_sys_recvmsg, %o0) SIGN1(sys32_sendmsg, compat_sys_sendmsg, %o0) SIGN2(sys32_sync_file_range, compat_sync_file_range, %o0, %o5) SIGN1(sys32_vmsplice, compat_sys_vmsplice, %o0) -SIGN1(sys32_truncate, sys_truncate, %o1) .globl sys32_mmap2 sys32_mmap2: diff --git a/arch/sparc/kernel/systbls_64.S b/arch/sparc/kernel/systbls_64.S index 9ed517c5037b..088134834dab 100644 --- a/arch/sparc/kernel/systbls_64.S +++ b/arch/sparc/kernel/systbls_64.S @@ -43,8 +43,8 @@ sys_call_table32: /*110*/ .word sys_setresgid, sys_getresgid, sys_setregid, sys_nis_syscall, sys_nis_syscall .word sys_getgroups, compat_sys_gettimeofday, sys32_getrusage, sys_nis_syscall, sys_getcwd /*120*/ .word compat_sys_readv, compat_sys_writev, compat_sys_settimeofday, sys_fchown16, sys_fchmod - .word sys_nis_syscall, sys_setreuid16, sys_setregid16, sys_rename, sys32_truncate -/*130*/ .word sys_ftruncate, sys_flock, compat_sys_lstat64, sys_nis_syscall, sys_nis_syscall + .word sys_nis_syscall, sys_setreuid16, sys_setregid16, sys_rename, compat_sys_truncate +/*130*/ .word compat_sys_ftruncate, sys_flock, compat_sys_lstat64, sys_nis_syscall, sys_nis_syscall .word sys_nis_syscall, sys_mkdir, sys_rmdir, compat_sys_utimes, compat_sys_stat64 /*140*/ .word sys_sendfile64, sys_nis_syscall, sys32_futex, sys_gettid, compat_sys_getrlimit .word compat_sys_setrlimit, sys_pivot_root, sys_prctl, sys_pciconfig_read, sys_pciconfig_write diff --git a/arch/x86/syscalls/syscall_32.tbl b/arch/x86/syscalls/syscall_32.tbl index f51810be1a32..e6d55f0064df 100644 --- a/arch/x86/syscalls/syscall_32.tbl +++ b/arch/x86/syscalls/syscall_32.tbl @@ -98,8 +98,8 @@ 89 i386 readdir sys_old_readdir compat_sys_old_readdir 90 i386 mmap sys_old_mmap sys32_mmap 91 i386 munmap sys_munmap -92 i386 truncate sys_truncate -93 i386 ftruncate sys_ftruncate +92 i386 truncate sys_truncate compat_sys_truncate +93 i386 ftruncate sys_ftruncate compat_sys_ftruncate 94 i386 fchmod sys_fchmod 95 i386 fchown sys_fchown16 96 i386 getpriority sys_getpriority diff --git a/fs/open.c b/fs/open.c index 9b33c0cbfacf..669ba0dd6667 100644 --- a/fs/open.c +++ b/fs/open.c @@ -30,6 +30,7 @@ #include #include #include +#include #include "internal.h" @@ -140,6 +141,13 @@ SYSCALL_DEFINE2(truncate, const char __user *, path, long, length) return do_sys_truncate(path, length); } +#ifdef CONFIG_COMPAT +COMPAT_SYSCALL_DEFINE2(truncate, const char __user *, path, compat_off_t, length) +{ + return do_sys_truncate(path, length); +} +#endif + static long do_sys_ftruncate(unsigned int fd, loff_t length, int small) { struct inode *inode; @@ -195,6 +203,13 @@ SYSCALL_DEFINE2(ftruncate, unsigned int, fd, unsigned long, length) return ret; } +#ifdef CONFIG_COMPAT +COMPAT_SYSCALL_DEFINE2(ftruncate, unsigned int, fd, compat_ulong_t, length) +{ + return do_sys_ftruncate(fd, length, 1); +} +#endif + /* LFS versions of truncate are only needed on 32 bit machines */ #if BITS_PER_LONG == 32 SYSCALL_DEFINE(truncate64)(const char __user * path, loff_t length) diff --git a/include/linux/compat.h b/include/linux/compat.h index 59c72048bf20..76a87fb57ac2 100644 --- a/include/linux/compat.h +++ b/include/linux/compat.h @@ -536,6 +536,8 @@ asmlinkage long compat_sys_openat(int dfd, const char __user *filename, asmlinkage long compat_sys_open_by_handle_at(int mountdirfd, struct file_handle __user *handle, int flags); +asmlinkage long compat_sys_truncate(const char __user *, compat_off_t); +asmlinkage long compat_sys_ftruncate(unsigned int, compat_ulong_t); asmlinkage long compat_sys_pselect6(int n, compat_ulong_t __user *inp, compat_ulong_t __user *outp, compat_ulong_t __user *exp,