#include <linux/types.h>
#include <linux/string.h>
-#include <linux/kernel.h>
-#include <linux/time.h>
-#include <linux/fs.h>
#include <linux/init.h>
-#include <linux/sunrpc/clnt.h>
-#include <linux/sunrpc/xprtsock.h>
#include <linux/nfs.h>
#include <linux/nfs_fs.h>
-#include <linux/nfs_mount.h>
-#include <linux/in.h>
-#include <linux/major.h>
#include <linux/utsname.h>
-#include <linux/inet.h>
#include <linux/root_dev.h>
#include <net/ipconfig.h>
-#include <linux/parser.h>
#include "internal.h"
#undef NFSROOT_DEBUG
#define NFSDBG_FACILITY NFSDBG_ROOT
-/* Default port to use if server is not running a portmapper */
-#define NFS_MNT_PORT 627
-
/* Default path we try to mount. "%s" gets replaced by our IP address */
#define NFS_ROOT "/tftpboot/%s"
static char nfs_root_options[256] __initdata = "";
/* Address of NFS server */
-static __be32 servaddr __initdata = 0;
+static __be32 servaddr __initdata = htonl(INADDR_NONE);
/* Name of directory to mount */
static char nfs_export_path[NFS_MAXPATHLEN + 1] __initdata = "";
/* server:export path string passed to super.c */
static char nfs_root_device[NFS_MAXPATHLEN + 1] __initdata = "";
-/* NFS-related data */
-static struct nfs_mount_data nfs_data __initdata = { 0, };/* NFS mount info */
-static int nfs_port __initdata = 0; /* Port to connect to for NFS */
-static int mount_port __initdata = 0; /* Mount daemon port number */
-
-
-/***************************************************************************
-
- Parsing of options
-
- ***************************************************************************/
-
-enum {
- /* Options that take integer arguments */
- Opt_port, Opt_rsize, Opt_wsize, Opt_timeo, Opt_retrans, Opt_acregmin,
- Opt_acregmax, Opt_acdirmin, Opt_acdirmax,
- /* Options that take no arguments */
- Opt_soft, Opt_hard, Opt_intr,
- Opt_nointr, Opt_posix, Opt_noposix, Opt_cto, Opt_nocto, Opt_ac,
- Opt_noac, Opt_lock, Opt_nolock, Opt_v2, Opt_v3, Opt_udp, Opt_tcp,
- Opt_acl, Opt_noacl,
- /* Error token */
- Opt_err
-};
-
-static const match_table_t tokens __initconst = {
- {Opt_port, "port=%u"},
- {Opt_rsize, "rsize=%u"},
- {Opt_wsize, "wsize=%u"},
- {Opt_timeo, "timeo=%u"},
- {Opt_retrans, "retrans=%u"},
- {Opt_acregmin, "acregmin=%u"},
- {Opt_acregmax, "acregmax=%u"},
- {Opt_acdirmin, "acdirmin=%u"},
- {Opt_acdirmax, "acdirmax=%u"},
- {Opt_soft, "soft"},
- {Opt_hard, "hard"},
- {Opt_intr, "intr"},
- {Opt_nointr, "nointr"},
- {Opt_posix, "posix"},
- {Opt_noposix, "noposix"},
- {Opt_cto, "cto"},
- {Opt_nocto, "nocto"},
- {Opt_ac, "ac"},
- {Opt_noac, "noac"},
- {Opt_lock, "lock"},
- {Opt_nolock, "nolock"},
- {Opt_v2, "nfsvers=2"},
- {Opt_v2, "v2"},
- {Opt_v3, "nfsvers=3"},
- {Opt_v3, "v3"},
- {Opt_udp, "proto=udp"},
- {Opt_udp, "udp"},
- {Opt_tcp, "proto=tcp"},
- {Opt_tcp, "tcp"},
- {Opt_acl, "acl"},
- {Opt_noacl, "noacl"},
- {Opt_err, NULL}
-
-};
-
-/*
- * Parse option string.
- */
-
-static int __init root_nfs_parse(char *name, char *buf)
-{
-
- char *p;
- substring_t args[MAX_OPT_ARGS];
- int option;
-
- if (!name)
- return 1;
-
- /* Set the NFS remote path */
- p = strsep(&name, ",");
- if (p[0] != '\0' && strcmp(p, "default") != 0)
- strlcpy(buf, p, NFS_MAXPATHLEN);
-
- while ((p = strsep (&name, ",")) != NULL) {
- int token;
- if (!*p)
- continue;
- token = match_token(p, tokens, args);
-
- /* %u tokens only. Beware if you add new tokens! */
- if (token < Opt_soft && match_int(&args[0], &option))
- return 0;
- switch (token) {
- case Opt_port:
- nfs_port = option;
- break;
- case Opt_rsize:
- nfs_data.rsize = option;
- break;
- case Opt_wsize:
- nfs_data.wsize = option;
- break;
- case Opt_timeo:
- nfs_data.timeo = option;
- break;
- case Opt_retrans:
- nfs_data.retrans = option;
- break;
- case Opt_acregmin:
- nfs_data.acregmin = option;
- break;
- case Opt_acregmax:
- nfs_data.acregmax = option;
- break;
- case Opt_acdirmin:
- nfs_data.acdirmin = option;
- break;
- case Opt_acdirmax:
- nfs_data.acdirmax = option;
- break;
- case Opt_soft:
- nfs_data.flags |= NFS_MOUNT_SOFT;
- break;
- case Opt_hard:
- nfs_data.flags &= ~NFS_MOUNT_SOFT;
- break;
- case Opt_intr:
- case Opt_nointr:
- break;
- case Opt_posix:
- nfs_data.flags |= NFS_MOUNT_POSIX;
- break;
- case Opt_noposix:
- nfs_data.flags &= ~NFS_MOUNT_POSIX;
- break;
- case Opt_cto:
- nfs_data.flags &= ~NFS_MOUNT_NOCTO;
- break;
- case Opt_nocto:
- nfs_data.flags |= NFS_MOUNT_NOCTO;
- break;
- case Opt_ac:
- nfs_data.flags &= ~NFS_MOUNT_NOAC;
- break;
- case Opt_noac:
- nfs_data.flags |= NFS_MOUNT_NOAC;
- break;
- case Opt_lock:
- nfs_data.flags &= ~NFS_MOUNT_NONLM;
- break;
- case Opt_nolock:
- nfs_data.flags |= NFS_MOUNT_NONLM;
- break;
- case Opt_v2:
- nfs_data.flags &= ~NFS_MOUNT_VER3;
- break;
- case Opt_v3:
- nfs_data.flags |= NFS_MOUNT_VER3;
- break;
- case Opt_udp:
- nfs_data.flags &= ~NFS_MOUNT_TCP;
- break;
- case Opt_tcp:
- nfs_data.flags |= NFS_MOUNT_TCP;
- break;
- case Opt_acl:
- nfs_data.flags &= ~NFS_MOUNT_NOACL;
- break;
- case Opt_noacl:
- nfs_data.flags |= NFS_MOUNT_NOACL;
- break;
- default:
- printk(KERN_WARNING "Root-NFS: unknown "
- "option: %s\n", p);
- return 0;
- }
- }
-
- return 1;
-}
-
-/*
- * Prepare the NFS data structure and parse all options.
- */
-static int __init root_nfs_name(char *name)
-{
- static char buf[NFS_MAXPATHLEN] __initdata;
- char *cp;
-
- /* Set some default values */
- memset(&nfs_data, 0, sizeof(nfs_data));
- nfs_port = -1;
- nfs_data.version = NFS_MOUNT_VERSION;
- nfs_data.flags = NFS_MOUNT_NONLM; /* No lockd in nfs root yet */
- nfs_data.rsize = NFS_DEF_FILE_IO_SIZE;
- nfs_data.wsize = NFS_DEF_FILE_IO_SIZE;
- nfs_data.acregmin = NFS_DEF_ACREGMIN;
- nfs_data.acregmax = NFS_DEF_ACREGMAX;
- nfs_data.acdirmin = NFS_DEF_ACDIRMIN;
- nfs_data.acdirmax = NFS_DEF_ACDIRMAX;
- strcpy(buf, NFS_ROOT);
-
- /* Process options received from the remote server */
- root_nfs_parse(root_server_path, buf);
-
- /* Override them by options set on kernel command-line */
- root_nfs_parse(name, buf);
-
- cp = utsname()->nodename;
- if (strlen(buf) + strlen(cp) > NFS_MAXPATHLEN) {
- printk(KERN_ERR "Root-NFS: Pathname for remote directory too long.\n");
- return -1;
- }
- sprintf(nfs_export_path, buf, cp);
-
- return 1;
-}
-
-
-/*
- * Get NFS server address.
- */
-static int __init root_nfs_addr(void)
-{
- if ((servaddr = root_server_addr) == htonl(INADDR_NONE)) {
- printk(KERN_ERR "Root-NFS: No NFS server available, giving up.\n");
- return -1;
- }
-
- snprintf(nfs_data.hostname, sizeof(nfs_data.hostname),
- "%pI4", &servaddr);
- return 0;
-}
-
-/*
- * Tell the user what's going on.
- */
-#ifdef NFSROOT_DEBUG
-static void __init root_nfs_print(void)
-{
- printk(KERN_NOTICE "Root-NFS: Mounting %s on server %s as root\n",
- nfs_export_path, nfs_data.hostname);
- printk(KERN_NOTICE "Root-NFS: rsize = %d, wsize = %d, timeo = %d, retrans = %d\n",
- nfs_data.rsize, nfs_data.wsize, nfs_data.timeo, nfs_data.retrans);
- printk(KERN_NOTICE "Root-NFS: acreg (min,max) = (%d,%d), acdir (min,max) = (%d,%d)\n",
- nfs_data.acregmin, nfs_data.acregmax,
- nfs_data.acdirmin, nfs_data.acdirmax);
- printk(KERN_NOTICE "Root-NFS: nfsd port = %d, mountd port = %d, flags = %08x\n",
- nfs_port, mount_port, nfs_data.flags);
-}
-#endif
-
-
-static int __init root_nfs_init(void)
-{
-#ifdef NFSROOT_DEBUG
- nfs_debug |= NFSDBG_ROOT;
-#endif
-
- /*
- * Decode the root directory path name and NFS options from
- * the kernel command line. This has to go here in order to
- * be able to use the client IP address for the remote root
- * directory (necessary for pure RARP booting).
- */
- if (root_nfs_name(nfs_root_parms) < 0 ||
- root_nfs_addr() < 0)
- return -1;
-
-#ifdef NFSROOT_DEBUG
- root_nfs_print();
-#endif
-
- return 0;
-}
-
/*
* Parse NFS server and directory information passed on the kernel
* command line.
__setup("nfsroot=", nfs_root_setup);
-/***************************************************************************
-
- Routines to actually mount the root directory
-
- ***************************************************************************/
-
-/*
- * Construct sockaddr_in from address and port number.
- */
-static inline void
-set_sockaddr(struct sockaddr_in *sin, __be32 addr, __be16 port)
-{
- sin->sin_family = AF_INET;
- sin->sin_addr.s_addr = addr;
- sin->sin_port = port;
-}
-
-/*
- * Query server portmapper for the port of a daemon program.
- */
-static int __init root_nfs_getport(int program, int version, int proto)
-{
- struct sockaddr_in sin;
-
- printk(KERN_NOTICE "Looking up port of RPC %d/%d on %pI4\n",
- program, version, &servaddr);
- set_sockaddr(&sin, servaddr, 0);
- return rpcb_getport_sync(&sin, program, version, proto);
-}
-
-
-/*
- * Use portmapper to find mountd and nfsd port numbers if not overriden
- * by the user. Use defaults if portmapper is not available.
- * XXX: Is there any nfs server with no portmapper?
- */
-static int __init root_nfs_ports(void)
-{
- int port;
- int nfsd_ver, mountd_ver;
- int nfsd_port, mountd_port;
- int proto;
-
- if (nfs_data.flags & NFS_MOUNT_VER3) {
- nfsd_ver = NFS3_VERSION;
- mountd_ver = NFS_MNT3_VERSION;
- nfsd_port = NFS_PORT;
- mountd_port = NFS_MNT_PORT;
- } else {
- nfsd_ver = NFS2_VERSION;
- mountd_ver = NFS_MNT_VERSION;
- nfsd_port = NFS_PORT;
- mountd_port = NFS_MNT_PORT;
- }
-
- proto = (nfs_data.flags & NFS_MOUNT_TCP) ? IPPROTO_TCP : IPPROTO_UDP;
-
- if (nfs_port < 0) {
- if ((port = root_nfs_getport(NFS_PROGRAM, nfsd_ver, proto)) < 0) {
- printk(KERN_ERR "Root-NFS: Unable to get nfsd port "
- "number from server, using default\n");
- port = nfsd_port;
- }
- nfs_port = port;
- dprintk("Root-NFS: Portmapper on server returned %d "
- "as nfsd port\n", port);
- }
-
- if ((port = root_nfs_getport(NFS_MNT_PROGRAM, mountd_ver, proto)) < 0) {
- printk(KERN_ERR "Root-NFS: Unable to get mountd port "
- "number from server, using default\n");
- port = mountd_port;
- }
- mount_port = port;
- dprintk("Root-NFS: mountd port is %d\n", port);
-
- return 0;
-}
-
-
-/*
- * Get a file handle from the server for the directory which is to be
- * mounted.
- */
-static int __init root_nfs_get_handle(void)
-{
- struct sockaddr_in sin;
- unsigned int auth_flav_len = 0;
- struct nfs_mount_request request = {
- .sap = (struct sockaddr *)&sin,
- .salen = sizeof(sin),
- .dirpath = nfs_export_path,
- .version = (nfs_data.flags & NFS_MOUNT_VER3) ?
- NFS_MNT3_VERSION : NFS_MNT_VERSION,
- .protocol = (nfs_data.flags & NFS_MOUNT_TCP) ?
- XPRT_TRANSPORT_TCP : XPRT_TRANSPORT_UDP,
- .auth_flav_len = &auth_flav_len,
- };
- int status = -ENOMEM;
-
- request.fh = nfs_alloc_fhandle();
- if (!request.fh)
- goto out;
- set_sockaddr(&sin, servaddr, htons(mount_port));
- status = nfs_mount(&request);
- if (status < 0)
- printk(KERN_ERR "Root-NFS: Server returned error %d "
- "while mounting %s\n", status, nfs_export_path);
- else {
- nfs_data.root.size = request.fh->size;
- memcpy(&nfs_data.root.data, request.fh->data, request.fh->size);
- }
- nfs_free_fhandle(request.fh);
-out:
- return status;
-}
-
-/*
- * Get the NFS port numbers and file handle, and return the prepared 'data'
- * argument for mount() if everything went OK. Return NULL otherwise.
- */
-void * __init old_nfs_root_data(void)
-{
- if (root_nfs_init() < 0
- || root_nfs_ports() < 0
- || root_nfs_get_handle() < 0)
- return NULL;
- set_sockaddr((struct sockaddr_in *) &nfs_data.addr, servaddr, htons(nfs_port));
- return (void*)&nfs_data;
-}
-
static int __init root_nfs_copy(char *dest, const char *src,
const size_t destlen)
{
projects / GitHub / LineageOS / android_kernel_motorola_exynos9610.git / commitdiff