/** * ntfs-3g - Third Generation NTFS Driver * * Copyright (c) 2005-2007 Yura Pakhuchiy * Copyright (c) 2005 Yuval Fledel * Copyright (c) 2006-2009 Szabolcs Szakacsits * Copyright (c) 2007-2009 Jean-Pierre Andre * Copyright (c) 2009 Erik Larsson * * This file is originated from the Linux-NTFS project. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program (in the main directory of the NTFS-3G * distribution in the file COPYING); if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ #include "config.h" #include #if !defined(FUSE_VERSION) || (FUSE_VERSION < 26) #error "***********************************************************" #error "* *" #error "* Compilation requires at least FUSE version 2.6.0! *" #error "* *" #error "***********************************************************" #endif #ifdef FUSE_INTERNAL #define FUSE_TYPE "integrated FUSE" #else #define FUSE_TYPE "external FUSE" #endif #ifdef HAVE_STDIO_H #include #endif #ifdef HAVE_STRING_H #include #endif #ifdef HAVE_ERRNO_H #include #endif #ifdef HAVE_FCNTL_H #include #endif #ifdef HAVE_UNISTD_H #include #endif #ifdef HAVE_STDLIB_H #include #endif #ifdef HAVE_LOCALE_H #include #endif #include #ifdef HAVE_LIMITS_H #include #endif #include #include #include #ifdef HAVE_SETXATTR #include #endif #ifdef HAVE_SYS_TYPES_H #include #endif #ifdef HAVE_SYS_MKDEV_H #include #endif #include "compat.h" #include "attrib.h" #include "inode.h" #include "volume.h" #include "dir.h" #include "unistr.h" #include "layout.h" #include "index.h" #include "ntfstime.h" #include "misc.h" typedef enum { FSTYPE_NONE, FSTYPE_UNKNOWN, FSTYPE_FUSE, FSTYPE_FUSEBLK } fuse_fstype; typedef enum { ATIME_ENABLED, ATIME_DISABLED, ATIME_RELATIVE } ntfs_atime_t; typedef struct { fuse_fill_dir_t filler; void *buf; } ntfs_fuse_fill_context_t; typedef enum { NF_STREAMS_INTERFACE_NONE, /* No access to named data streams. */ NF_STREAMS_INTERFACE_XATTR, /* Map named data streams to xattrs. */ NF_STREAMS_INTERFACE_WINDOWS, /* "file:stream" interface. */ } ntfs_fuse_streams_interface; typedef struct { ntfs_volume *vol; unsigned int uid; unsigned int gid; unsigned int fmask; unsigned int dmask; ntfs_fuse_streams_interface streams; ntfs_atime_t atime; BOOL ro; BOOL show_sys_files; BOOL silent; BOOL recover; BOOL hiberfile; BOOL debug; BOOL no_detach; BOOL blkdev; BOOL mounted; struct fuse_chan *fc; } ntfs_fuse_context_t; static struct options { char *mnt_point; /* Mount point */ char *options; /* Mount options */ char *device; /* Device to mount */ } opts; static const char *EXEC_NAME = "ntfs-3g"; static char def_opts[] = "silent,allow_other,nonempty,"; static ntfs_fuse_context_t *ctx; static u32 ntfs_sequence; static const char *usage_msg = "\n" "%s %s %s %d - Third Generation NTFS Driver\n" "\n" "Copyright (C) 2005-2007 Yura Pakhuchiy\n" "Copyright (C) 2006-2009 Szabolcs Szakacsits\n" "Copyright (C) 2007-2009 Jean-Pierre Andre\n" "Copyright (C) 2009 Erik Larsson\n" "\n" "Usage: %s [-o option[,...]] \n" "\n" "Options: ro (read-only mount), remove_hiberfile, uid=, gid=,\n" " umask=, fmask=, dmask=, streams_interface=.\n" " Please see the details in the manual (type: man ntfs-3g).\n" "\n" "Example: ntfs-3g /dev/sda1 /mnt/windows\n" "\n" "%s"; #ifdef FUSE_INTERNAL int drop_privs(void); int restore_privs(void); #else /* * setuid and setgid root ntfs-3g denies to start with external FUSE, * therefore the below functions are no-op in such case. */ static int drop_privs(void) { return 0; } static int restore_privs(void) { return 0; } static const char *setuid_msg = "Mount is denied because setuid and setgid root ntfs-3g is insecure with the\n" "external FUSE library. Either remove the setuid/setgid bit from the binary\n" "or rebuild NTFS-3G with integrated FUSE support and make it setuid root.\n" "Please see more information at http://ntfs-3g.org/support.html#unprivileged\n"; static const char *unpriv_fuseblk_msg = "Unprivileged user can not mount NTFS block devices using the external FUSE\n" "library. Either mount the volume as root, or rebuild NTFS-3G with integrated\n" "FUSE support and make it setuid root. Please see more information at\n" "http://ntfs-3g.org/support.html#unprivileged\n"; #endif #define USB_VOL_NAME_FILE "/tmp/usb_vol_name/%s" /* Foxconn added pling 05/05/2009 */ /** * ntfs_fuse_is_named_data_stream - check path to be to named data stream * @path: path to check * * Returns 1 if path is to named data stream or 0 otherwise. */ static int ntfs_fuse_is_named_data_stream(const char *path) { if (strchr(path, ':') && ctx->streams == NF_STREAMS_INTERFACE_WINDOWS) return 1; return 0; } static void ntfs_fuse_update_times(ntfs_inode *ni, ntfs_time_update_flags mask) { if (ctx->atime == ATIME_DISABLED) mask &= ~NTFS_UPDATE_ATIME; else if (ctx->atime == ATIME_RELATIVE && mask == NTFS_UPDATE_ATIME && ni->last_access_time >= ni->last_data_change_time && ni->last_access_time >= ni->last_mft_change_time) return; ntfs_inode_update_times(ni, mask); } static s64 ntfs_get_nr_free_mft_records(ntfs_volume *vol) { ntfs_attr *na = vol->mftbmp_na; s64 nr_free = ntfs_attr_get_free_bits(na); if (nr_free >= 0) nr_free += (na->allocated_size - na->data_size) << 3; return nr_free; } /** * ntfs_fuse_statfs - return information about mounted NTFS volume * @path: ignored (but fuse requires it) * @sfs: statfs structure in which to return the information * * Return information about the mounted NTFS volume @sb in the statfs structure * pointed to by @sfs (this is initialized with zeros before ntfs_statfs is * called). We interpret the values to be correct of the moment in time at * which we are called. Most values are variable otherwise and this isn't just * the free values but the totals as well. For example we can increase the * total number of file nodes if we run out and we can keep doing this until * there is no more space on the volume left at all. * * This code based on ntfs_statfs from ntfs kernel driver. * * Returns 0 on success or -errno on error. */ static int ntfs_fuse_statfs(const char *path __attribute__((unused)), struct statvfs *sfs) { s64 size; int delta_bits; ntfs_volume *vol; vol = ctx->vol; if (!vol) return -ENODEV; /* * File system block size. Used to calculate used/free space by df. * Incorrectly documented as "optimal transfer block size". */ sfs->f_bsize = vol->cluster_size; /* Fundamental file system block size, used as the unit. */ sfs->f_frsize = vol->cluster_size; /* * Total number of blocks on file system in units of f_frsize. * Since inodes are also stored in blocks ($MFT is a file) hence * this is the number of clusters on the volume. */ sfs->f_blocks = vol->nr_clusters; /* Free blocks available for all and for non-privileged processes. */ size = vol->free_clusters; if (size < 0) size = 0; sfs->f_bavail = sfs->f_bfree = size; /* Free inodes on the free space */ delta_bits = vol->cluster_size_bits - vol->mft_record_size_bits; if (delta_bits >= 0) size <<= delta_bits; else size >>= -delta_bits; /* Number of inodes at this point in time. */ sfs->f_files = (vol->mftbmp_na->allocated_size << 3) + size; /* Free inodes available for all and for non-privileged processes. */ size += vol->free_mft_records; if (size < 0) size = 0; sfs->f_ffree = sfs->f_favail = size; /* Maximum length of filenames. */ sfs->f_namemax = NTFS_MAX_NAME_LEN; return 0; } /** * ntfs_fuse_parse_path - split path to path and stream name. * @org_path: path to split * @path: pointer to buffer in which parsed path saved * @stream_name: pointer to buffer where stream name in unicode saved * * This function allocates buffers for @*path and @*stream, user must free them * after use. * * Return values: * <0 Error occurred, return -errno; * 0 No stream name, @*stream is not allocated and set to AT_UNNAMED. * >0 Stream name length in unicode characters. */ static int ntfs_fuse_parse_path(const char *org_path, char **path, ntfschar **stream_name) { char *stream_name_mbs; int res; stream_name_mbs = strdup(org_path); if (!stream_name_mbs) return -errno; if (ctx->streams == NF_STREAMS_INTERFACE_WINDOWS) { *path = strsep(&stream_name_mbs, ":"); if (stream_name_mbs) { *stream_name = NULL; res = ntfs_mbstoucs(stream_name_mbs, stream_name); if (res < 0) return -errno; return res; } } else *path = stream_name_mbs; *stream_name = AT_UNNAMED; return 0; } static void set_fuse_error(int *err) { if (!*err) *err = -errno; } #if defined(__APPLE__) || defined(__DARWIN__) static void *ntfs_macfuse_init(struct fuse_conn_info *conn) { FUSE_ENABLE_XTIMES(conn); return NULL; } static int ntfs_macfuse_getxtimes(const char *org_path, struct timespec *bkuptime, struct timespec *crtime) { int res = 0; ntfs_inode *ni; char *path = NULL; ntfschar *stream_name; int stream_name_len; stream_name_len = ntfs_fuse_parse_path(org_path, &path, &stream_name); if (stream_name_len < 0) return stream_name_len; memset(bkuptime, 0, sizeof(struct timespec)); memset(crtime, 0, sizeof(struct timespec)); ni = ntfs_pathname_to_inode(ctx->vol, NULL, path); if (!ni) { res = -errno; goto exit; } /* We have no backup timestamp in NTFS. */ crtime->tv_sec = ni->creation_time; exit: if (ntfs_inode_close(ni)) set_fuse_error(&res); free(path); if (stream_name_len) free(stream_name); return res; } int ntfs_macfuse_setcrtime(const char *path, const struct timespec *tv) { ntfs_inode *ni; int res = 0; if (ntfs_fuse_is_named_data_stream(path)) return -EINVAL; /* n/a for named data streams. */ ni = ntfs_pathname_to_inode(ctx->vol, NULL, path); if (!ni) return -errno; if (tv) { ni->creation_time = tv->tv_sec; ntfs_fuse_update_times(ni, NTFS_UPDATE_CTIME); } if (ntfs_inode_close(ni)) set_fuse_error(&res); return res; } int ntfs_macfuse_setbkuptime(const char *path, const struct timespec *tv) { ntfs_inode *ni; int res = 0; if (ntfs_fuse_is_named_data_stream(path)) return -EINVAL; /* n/a for named data streams. */ ni = ntfs_pathname_to_inode(ctx->vol, NULL, path); if (!ni) return -errno; /* * Doing nothing while pretending to do something. NTFS has no backup * time. If this function is not implemented then some apps break. */ if (ntfs_inode_close(ni)) set_fuse_error(&res); return res; } #endif /* defined(__APPLE__) || defined(__DARWIN__) */ static int ntfs_fuse_getattr(const char *org_path, struct stat *stbuf) { int res = 0; ntfs_inode *ni; ntfs_attr *na; char *path = NULL; ntfschar *stream_name; int stream_name_len; stream_name_len = ntfs_fuse_parse_path(org_path, &path, &stream_name); if (stream_name_len < 0) return stream_name_len; memset(stbuf, 0, sizeof(struct stat)); ni = ntfs_pathname_to_inode(ctx->vol, NULL, path); if (!ni) { res = -errno; goto exit; } if (ni->mrec->flags & MFT_RECORD_IS_DIRECTORY && !stream_name_len) { /* Directory. */ stbuf->st_mode = S_IFDIR | (0777 & ~ctx->dmask); na = ntfs_attr_open(ni, AT_INDEX_ALLOCATION, NTFS_INDEX_I30, 4); if (na) { stbuf->st_size = na->data_size; stbuf->st_blocks = na->allocated_size >> 9; ntfs_attr_close(na); } stbuf->st_nlink = 1; /* Make find(1) work */ } else { /* Regular or Interix (INTX) file. */ stbuf->st_mode = S_IFREG; stbuf->st_size = ni->data_size; /* * Temporary fix to make ActiveSync work via Samba 3.0. * See more on the ntfs-3g-devel list. */ stbuf->st_blocks = (ni->allocated_size + 511) >> 9; stbuf->st_nlink = le16_to_cpu(ni->mrec->link_count); if (ni->flags & FILE_ATTR_SYSTEM || stream_name_len) { na = ntfs_attr_open(ni, AT_DATA, stream_name, stream_name_len); if (!na) { if (stream_name_len) res = -ENOENT; goto exit; } if (stream_name_len) { stbuf->st_size = na->data_size; stbuf->st_blocks = na->allocated_size >> 9; } /* Check whether it's Interix FIFO or socket. */ if (!(ni->flags & FILE_ATTR_HIDDEN) && !stream_name_len) { /* FIFO. */ if (na->data_size == 0) stbuf->st_mode = S_IFIFO; /* Socket link. */ if (na->data_size == 1) stbuf->st_mode = S_IFSOCK; } /* * Check whether it's Interix symbolic link, block or * character device. */ if (na->data_size <= sizeof(INTX_FILE_TYPES) + sizeof(ntfschar) * PATH_MAX && na->data_size > sizeof(INTX_FILE_TYPES) && !stream_name_len) { INTX_FILE *intx_file; intx_file = ntfs_malloc(na->data_size); if (!intx_file) { res = -errno; ntfs_attr_close(na); goto exit; } if (ntfs_attr_pread(na, 0, na->data_size, intx_file) != na->data_size) { res = -errno; free(intx_file); ntfs_attr_close(na); goto exit; } if (intx_file->magic == INTX_BLOCK_DEVICE && na->data_size == offsetof( INTX_FILE, device_end)) { stbuf->st_mode = S_IFBLK; stbuf->st_rdev = makedev(le64_to_cpu( intx_file->major), le64_to_cpu( intx_file->minor)); } if (intx_file->magic == INTX_CHARACTER_DEVICE && na->data_size == offsetof( INTX_FILE, device_end)) { stbuf->st_mode = S_IFCHR; stbuf->st_rdev = makedev(le64_to_cpu( intx_file->major), le64_to_cpu( intx_file->minor)); } if (intx_file->magic == INTX_SYMBOLIC_LINK) stbuf->st_mode = S_IFLNK; free(intx_file); } ntfs_attr_close(na); } stbuf->st_mode |= (0777 & ~ctx->fmask); } stbuf->st_uid = ctx->uid; stbuf->st_gid = ctx->gid; stbuf->st_ino = ni->mft_no; stbuf->st_atime = ni->last_access_time; stbuf->st_ctime = ni->last_mft_change_time; stbuf->st_mtime = ni->last_data_change_time; exit: if (ntfs_inode_close(ni)) set_fuse_error(&res); free(path); if (stream_name_len) free(stream_name); return res; } static int ntfs_fuse_readlink(const char *org_path, char *buf, size_t buf_size) { char *path; ntfschar *stream_name; ntfs_inode *ni = NULL; ntfs_attr *na = NULL; INTX_FILE *intx_file = NULL; int stream_name_len, res = 0; /* Get inode. */ stream_name_len = ntfs_fuse_parse_path(org_path, &path, &stream_name); if (stream_name_len < 0) return stream_name_len; if (stream_name_len > 0) { res = -EINVAL; goto exit; } ni = ntfs_pathname_to_inode(ctx->vol, NULL, path); if (!ni) { res = -errno; goto exit; } /* Sanity checks. */ if (!(ni->flags & FILE_ATTR_SYSTEM)) { res = -EINVAL; goto exit; } na = ntfs_attr_open(ni, AT_DATA, AT_UNNAMED, 0); if (!na) { res = -errno; goto exit; } if (na->data_size <= sizeof(INTX_FILE_TYPES)) { res = -EINVAL; goto exit; } if (na->data_size > sizeof(INTX_FILE_TYPES) + sizeof(ntfschar) * PATH_MAX) { res = -ENAMETOOLONG; goto exit; } /* Receive file content. */ intx_file = ntfs_malloc(na->data_size); if (!intx_file) { res = -errno; goto exit; } if (ntfs_attr_pread(na, 0, na->data_size, intx_file) != na->data_size) { res = -errno; goto exit; } /* Sanity check. */ if (intx_file->magic != INTX_SYMBOLIC_LINK) { res = -EINVAL; goto exit; } /* Convert link from unicode to local encoding. */ if (ntfs_ucstombs(intx_file->target, (na->data_size - offsetof(INTX_FILE, target)) / sizeof(ntfschar), &buf, buf_size) < 0) { res = -errno; goto exit; } exit: if (intx_file) free(intx_file); if (na) ntfs_attr_close(na); if (ntfs_inode_close(ni)) set_fuse_error(&res); free(path); if (stream_name_len) free(stream_name); return res; } static int ntfs_fuse_filler(ntfs_fuse_fill_context_t *fill_ctx, const ntfschar *name, const int name_len, const int name_type, const s64 pos __attribute__((unused)), const MFT_REF mref, const unsigned dt_type __attribute__((unused))) { char *filename = NULL; int ret = 0; if (name_type == FILE_NAME_DOS) return 0; if (ntfs_ucstombs(name, name_len, &filename, 0) < 0) { ntfs_log_perror("Skipping unrepresentable filename (inode %llu)", (unsigned long long)MREF(mref)); return -1; } if (ntfs_fuse_is_named_data_stream(filename)) { ntfs_log_error("Unable to access '%s' (inode %llu) with " "current named streams access interface.\n", filename, (unsigned long long)MREF(mref)); free(filename); return 0; } if (MREF(mref) == FILE_root || MREF(mref) >= FILE_first_user || ctx->show_sys_files) { struct stat st = { .st_ino = MREF(mref) }; if (dt_type == NTFS_DT_REG) st.st_mode = S_IFREG | (0777 & ~ctx->fmask); else if (dt_type == NTFS_DT_DIR) st.st_mode = S_IFDIR | (0777 & ~ctx->dmask); ret = fill_ctx->filler(fill_ctx->buf, filename, &st, 0); } free(filename); return ret; } static int ntfs_fuse_readdir(const char *path, void *buf, fuse_fill_dir_t filler, off_t offset __attribute__((unused)), struct fuse_file_info *fi __attribute__((unused))) { ntfs_fuse_fill_context_t fill_ctx; ntfs_inode *ni; s64 pos = 0; int err = 0; fill_ctx.filler = filler; fill_ctx.buf = buf; ni = ntfs_pathname_to_inode(ctx->vol, NULL, path); if (!ni) return -errno; if (ntfs_readdir(ni, &pos, &fill_ctx, (ntfs_filldir_t)ntfs_fuse_filler)) err = -errno; ntfs_fuse_update_times(ni, NTFS_UPDATE_ATIME); if (ntfs_inode_close(ni)) set_fuse_error(&err); return err; } static int ntfs_fuse_open(const char *org_path, struct fuse_file_info *fi __attribute__((unused))) { ntfs_inode *ni; ntfs_attr *na; int res = 0; char *path = NULL; ntfschar *stream_name; int stream_name_len; stream_name_len = ntfs_fuse_parse_path(org_path, &path, &stream_name); if (stream_name_len < 0) return stream_name_len; ni = ntfs_pathname_to_inode(ctx->vol, NULL, path); if (ni) { na = ntfs_attr_open(ni, AT_DATA, stream_name, stream_name_len); if (na) { if (NAttrEncrypted(na)) res = -EACCES; ntfs_attr_close(na); } else res = -errno; if (ntfs_inode_close(ni)) set_fuse_error(&res); } else res = -errno; free(path); if (stream_name_len) free(stream_name); return res; } static int ntfs_fuse_read(const char *org_path, char *buf, size_t size, off_t offset, struct fuse_file_info *fi __attribute__((unused))) { ntfs_inode *ni = NULL; ntfs_attr *na = NULL; char *path = NULL; ntfschar *stream_name; int stream_name_len, res; s64 total = 0; if (!size) return 0; stream_name_len = ntfs_fuse_parse_path(org_path, &path, &stream_name); if (stream_name_len < 0) return stream_name_len; ni = ntfs_pathname_to_inode(ctx->vol, NULL, path); if (!ni) { res = -errno; goto exit; } na = ntfs_attr_open(ni, AT_DATA, stream_name, stream_name_len); if (!na) { res = -errno; goto exit; } if (offset + size > na->data_size) { if (na->data_size < offset) goto ok; size = na->data_size - offset; } while (size > 0) { s64 ret = ntfs_attr_pread(na, offset, size, buf); if (ret != (s64)size) ntfs_log_perror("ntfs_attr_pread error reading '%s' at " "offset %lld: %lld <> %lld", org_path, (long long)offset, (long long)size, (long long)ret); if (ret <= 0 || ret > (s64)size) { res = (ret < 0) ? -errno : -EIO; goto exit; } size -= ret; offset += ret; total += ret; } ok: ntfs_fuse_update_times(na->ni, NTFS_UPDATE_ATIME); res = total; exit: if (na) ntfs_attr_close(na); if (ntfs_inode_close(ni)) set_fuse_error(&res); free(path); if (stream_name_len) free(stream_name); return res; } static int ntfs_fuse_write(const char *org_path, const char *buf, size_t size, off_t offset, struct fuse_file_info *fi __attribute__((unused))) { ntfs_inode *ni = NULL; ntfs_attr *na = NULL; char *path = NULL; ntfschar *stream_name; int stream_name_len, res, total = 0; stream_name_len = ntfs_fuse_parse_path(org_path, &path, &stream_name); if (stream_name_len < 0) { res = stream_name_len; goto out; } ni = ntfs_pathname_to_inode(ctx->vol, NULL, path); if (!ni) { res = -errno; goto exit; } na = ntfs_attr_open(ni, AT_DATA, stream_name, stream_name_len); if (!na) { res = -errno; goto exit; } while (size) { s64 ret = ntfs_attr_pwrite(na, offset, size, buf); if (0 <= ret && ret < (s64)size) ntfs_log_perror("ntfs_attr_pwrite partial write to '%s'" " (%lld: %lld <> %lld)", path, (long long)offset, (long long)size, (long long)ret); if (ret <= 0) { res = -errno; goto exit; } size -= ret; offset += ret; total += ret; } res = total; if (res > 0) ntfs_fuse_update_times(na->ni, NTFS_UPDATE_MCTIME); exit: if (na) ntfs_attr_close(na); if (ntfs_inode_close(ni)) set_fuse_error(&res); free(path); if (stream_name_len) free(stream_name); out: return res; } static int ntfs_fuse_truncate(const char *org_path, off_t size) { ntfs_inode *ni = NULL; ntfs_attr *na = NULL; int res; char *path = NULL; ntfschar *stream_name; int stream_name_len; stream_name_len = ntfs_fuse_parse_path(org_path, &path, &stream_name); if (stream_name_len < 0) return stream_name_len; ni = ntfs_pathname_to_inode(ctx->vol, NULL, path); if (!ni) goto exit; na = ntfs_attr_open(ni, AT_DATA, stream_name, stream_name_len); if (!na) goto exit; if (ntfs_attr_truncate(na, size)) goto exit; ntfs_fuse_update_times(na->ni, NTFS_UPDATE_MCTIME); errno = 0; exit: res = -errno; ntfs_attr_close(na); if (ntfs_inode_close(ni)) set_fuse_error(&res); free(path); if (stream_name_len) free(stream_name); return res; } static int ntfs_fuse_chmod(const char *path, mode_t mode __attribute__((unused))) { if (ntfs_fuse_is_named_data_stream(path)) return -EINVAL; /* n/a for named data streams. */ if (ctx->silent) return 0; return -EOPNOTSUPP; } static int ntfs_fuse_chown(const char *path, uid_t uid, gid_t gid) { if (ntfs_fuse_is_named_data_stream(path)) return -EINVAL; /* n/a for named data streams. */ if (ctx->silent) return 0; if (uid == ctx->uid && gid == ctx->gid) return 0; return -EOPNOTSUPP; } static int ntfs_fuse_create(const char *org_path, dev_t type, dev_t dev, const char *target) { char *name; ntfschar *uname = NULL, *utarget = NULL; ntfs_inode *dir_ni = NULL, *ni; char *path; int res = 0, uname_len, utarget_len; path = strdup(org_path); if (!path) return -errno; /* Generate unicode filename. */ name = strrchr(path, '/'); name++; uname_len = ntfs_mbstoucs(name, &uname); if (uname_len < 0) { res = -errno; goto exit; } /* Open parent directory. */ *name = 0; dir_ni = ntfs_pathname_to_inode(ctx->vol, NULL, path); if (!dir_ni) { res = -errno; goto exit; } /* Create object specified in @type. */ switch (type) { case S_IFCHR: case S_IFBLK: ni = ntfs_create_device(dir_ni, uname, uname_len, type, dev); break; case S_IFLNK: utarget_len = ntfs_mbstoucs(target, &utarget); if (utarget_len < 0) { res = -errno; goto exit; } ni = ntfs_create_symlink(dir_ni, uname, uname_len, utarget, utarget_len); break; default: ni = ntfs_create(dir_ni, uname, uname_len, type); break; } if (ni) { if (ntfs_inode_close(ni)) set_fuse_error(&res); ntfs_fuse_update_times(dir_ni, NTFS_UPDATE_MCTIME); } else res = -errno; exit: free(uname); if (ntfs_inode_close(dir_ni)) set_fuse_error(&res); if (utarget) free(utarget); free(path); return res; } static int ntfs_fuse_create_stream(const char *path, ntfschar *stream_name, const int stream_name_len) { ntfs_inode *ni; int res = 0; ni = ntfs_pathname_to_inode(ctx->vol, NULL, path); if (!ni) { res = -errno; if (res == -ENOENT) { /* * If such file does not exist, create it and try once * again to add stream to it. */ res = ntfs_fuse_create(path, S_IFREG, 0, NULL); if (!res) return ntfs_fuse_create_stream(path, stream_name, stream_name_len); else res = -errno; } return res; } if (ntfs_attr_add(ni, AT_DATA, stream_name, stream_name_len, NULL, 0)) res = -errno; if (ntfs_inode_close(ni)) set_fuse_error(&res); return res; } static int ntfs_fuse_mknod_common(const char *org_path, mode_t mode, dev_t dev) { char *path = NULL; ntfschar *stream_name; int stream_name_len; int res = 0; stream_name_len = ntfs_fuse_parse_path(org_path, &path, &stream_name); if (stream_name_len < 0) return stream_name_len; if (stream_name_len && !S_ISREG(mode)) { res = -EINVAL; goto exit; } if (!stream_name_len) res = ntfs_fuse_create(path, mode & S_IFMT, dev, NULL); else res = ntfs_fuse_create_stream(path, stream_name, stream_name_len); exit: free(path); if (stream_name_len) free(stream_name); return res; } static int ntfs_fuse_mknod(const char *path, mode_t mode, dev_t dev) { return ntfs_fuse_mknod_common(path, mode, dev); } static int ntfs_fuse_create_file(const char *path, mode_t mode, struct fuse_file_info *fi __attribute__((unused))) { return ntfs_fuse_mknod_common(path, mode, 0); } static int ntfs_fuse_symlink(const char *to, const char *from) { if (ntfs_fuse_is_named_data_stream(from)) return -EINVAL; /* n/a for named data streams. */ return ntfs_fuse_create(from, S_IFLNK, 0, to); } static int ntfs_fuse_link(const char *old_path, const char *new_path) { char *name; ntfschar *uname = NULL; ntfs_inode *dir_ni = NULL, *ni; char *path; int res = 0, uname_len; if (ntfs_fuse_is_named_data_stream(old_path)) return -EINVAL; /* n/a for named data streams. */ if (ntfs_fuse_is_named_data_stream(new_path)) return -EINVAL; /* n/a for named data streams. */ path = strdup(new_path); if (!path) return -errno; /* Open file for which create hard link. */ ni = ntfs_pathname_to_inode(ctx->vol, NULL, old_path); if (!ni) { res = -errno; goto exit; } /* Generate unicode filename. */ name = strrchr(path, '/'); name++; uname_len = ntfs_mbstoucs(name, &uname); if (uname_len < 0) { res = -errno; goto exit; } /* Open parent directory. */ *name = 0; dir_ni = ntfs_pathname_to_inode(ctx->vol, NULL, path); if (!dir_ni) { res = -errno; goto exit; } if (ntfs_link(ni, dir_ni, uname, uname_len)) { res = -errno; goto exit; } ntfs_fuse_update_times(ni, NTFS_UPDATE_CTIME); ntfs_fuse_update_times(dir_ni, NTFS_UPDATE_MCTIME); exit: /* * Must close dir_ni first otherwise ntfs_inode_sync_file_name(ni) * may fail because ni may not be in parent's index on the disk yet. */ if (ntfs_inode_close(dir_ni)) set_fuse_error(&res); if (ntfs_inode_close(ni)) set_fuse_error(&res); free(uname); free(path); return res; } static int ntfs_fuse_rm(const char *org_path) { char *name; ntfschar *uname = NULL; ntfs_inode *dir_ni = NULL, *ni; char *path; int res = 0, uname_len; path = strdup(org_path); if (!path) return -errno; /* Open object for delete. */ ni = ntfs_pathname_to_inode(ctx->vol, NULL, path); if (!ni) { res = -errno; goto exit; } /* Generate unicode filename. */ name = strrchr(path, '/'); name++; uname_len = ntfs_mbstoucs(name, &uname); if (uname_len < 0) { res = -errno; goto exit; } /* Open parent directory. */ *name = 0; dir_ni = ntfs_pathname_to_inode(ctx->vol, NULL, path); if (!dir_ni) { res = -errno; goto exit; } if (ntfs_delete(ni, dir_ni, uname, uname_len)) res = -errno; /* ntfs_delete() always closes ni and dir_ni */ ni = dir_ni = NULL; exit: if (ntfs_inode_close(dir_ni)) set_fuse_error(&res); if (ntfs_inode_close(ni)) set_fuse_error(&res); free(uname); free(path); return res; } static int ntfs_fuse_rm_stream(const char *path, ntfschar *stream_name, const int stream_name_len) { ntfs_inode *ni; int res = 0; ni = ntfs_pathname_to_inode(ctx->vol, NULL, path); if (!ni) return -errno; if (ntfs_attr_remove(ni, AT_DATA, stream_name, stream_name_len)) res = -errno; if (ntfs_inode_close(ni)) set_fuse_error(&res); return res; } static int ntfs_fuse_unlink(const char *org_path) { char *path = NULL; ntfschar *stream_name; int stream_name_len; int res = 0; stream_name_len = ntfs_fuse_parse_path(org_path, &path, &stream_name); if (stream_name_len < 0) return stream_name_len; if (!stream_name_len) res = ntfs_fuse_rm(path); else res = ntfs_fuse_rm_stream(path, stream_name, stream_name_len); free(path); if (stream_name_len) free(stream_name); return res; } static int ntfs_fuse_safe_rename(const char *old_path, const char *new_path, const char *tmp) { int ret; ntfs_log_trace("Entering\n"); ret = ntfs_fuse_link(new_path, tmp); if (ret) return ret; ret = ntfs_fuse_unlink(new_path); if (!ret) { ret = ntfs_fuse_link(old_path, new_path); if (ret) goto restore; ret = ntfs_fuse_unlink(old_path); if (ret) { if (ntfs_fuse_unlink(new_path)) goto err; goto restore; } } goto cleanup; restore: if (ntfs_fuse_link(tmp, new_path)) { err: ntfs_log_perror("Rename failed. Existing file '%s' was renamed " "to '%s'", new_path, tmp); } else { cleanup: ntfs_fuse_unlink(tmp); } return ret; } static int ntfs_fuse_rename_existing_dest(const char *old_path, const char *new_path) { int ret, len; char *tmp; const char *ext = ".ntfs-3g-"; ntfs_log_trace("Entering\n"); len = strlen(new_path) + strlen(ext) + 10 + 1; /* wc(str(2^32)) + \0 */ tmp = ntfs_malloc(len); if (!tmp) return -errno; ret = snprintf(tmp, len, "%s%s%010d", new_path, ext, ++ntfs_sequence); if (ret != len - 1) { ntfs_log_error("snprintf failed: %d != %d\n", ret, len - 1); ret = -EOVERFLOW; } else ret = ntfs_fuse_safe_rename(old_path, new_path, tmp); free(tmp); return ret; } static int ntfs_fuse_rename(const char *old_path, const char *new_path) { int ret, stream_name_len; char *path = NULL; ntfschar *stream_name; ntfs_inode *ni; ntfs_log_debug("rename: old: '%s' new: '%s'\n", old_path, new_path); /* * FIXME: Rename should be atomic. */ stream_name_len = ntfs_fuse_parse_path(new_path, &path, &stream_name); if (stream_name_len < 0) return stream_name_len; ni = ntfs_pathname_to_inode(ctx->vol, NULL, path); if (ni) { ret = ntfs_check_empty_dir(ni); if (ret < 0) { ret = -errno; ntfs_inode_close(ni); goto out; } if (ntfs_inode_close(ni)) { set_fuse_error(&ret); goto out; } ret = ntfs_fuse_rename_existing_dest(old_path, new_path); goto out; } ret = ntfs_fuse_link(old_path, new_path); if (ret) goto out; ret = ntfs_fuse_unlink(old_path); if (ret) ntfs_fuse_unlink(new_path); out: free(path); if (stream_name_len) free(stream_name); return ret; } static int ntfs_fuse_mkdir(const char *path, mode_t mode __attribute__((unused))) { if (ntfs_fuse_is_named_data_stream(path)) return -EINVAL; /* n/a for named data streams. */ return ntfs_fuse_create(path, S_IFDIR, 0, NULL); } static int ntfs_fuse_rmdir(const char *path) { if (ntfs_fuse_is_named_data_stream(path)) return -EINVAL; /* n/a for named data streams. */ return ntfs_fuse_rm(path); } static int ntfs_fuse_utime(const char *path, struct utimbuf *buf) { ntfs_inode *ni; int res = 0; if (ntfs_fuse_is_named_data_stream(path)) return -EINVAL; /* n/a for named data streams. */ ni = ntfs_pathname_to_inode(ctx->vol, NULL, path); if (!ni) return -errno; if (buf) { ni->last_access_time = buf->actime; ni->last_data_change_time = buf->modtime; ntfs_fuse_update_times(ni, NTFS_UPDATE_CTIME); } else ntfs_inode_update_times(ni, NTFS_UPDATE_AMCTIME); if (ntfs_inode_close(ni)) set_fuse_error(&res); return res; } static int ntfs_fuse_bmap(const char *path, size_t blocksize, uint64_t *idx) { ntfs_inode *ni; ntfs_attr *na; LCN lcn; int ret = 0; int cl_per_bl = ctx->vol->cluster_size / blocksize; if (blocksize > ctx->vol->cluster_size) return -EINVAL; if (ntfs_fuse_is_named_data_stream(path)) return -EINVAL; ni = ntfs_pathname_to_inode(ctx->vol, NULL, path); if (!ni) return -errno; na = ntfs_attr_open(ni, AT_DATA, AT_UNNAMED, 0); if (!na) { ret = -errno; goto close_inode; } if (NAttrCompressed(na) || NAttrEncrypted(na) || !NAttrNonResident(na)){ ret = -EINVAL; goto close_attr; } if (ntfs_attr_map_whole_runlist(na)) { ret = -errno; goto close_attr; } lcn = ntfs_rl_vcn_to_lcn(na->rl, *idx / cl_per_bl); *idx = (lcn > 0) ? lcn * cl_per_bl + *idx % cl_per_bl : 0; close_attr: ntfs_attr_close(na); close_inode: if (ntfs_inode_close(ni)) set_fuse_error(&ret); return ret; } #ifdef HAVE_SETXATTR static const char nf_ns_xattr_preffix[] = "user."; static const int nf_ns_xattr_preffix_len = 5; static int ntfs_fuse_listxattr(const char *path, char *list, size_t size) { ntfs_attr_search_ctx *actx = NULL; ntfs_inode *ni; char *to = list; int ret = 0; if (ctx->streams != NF_STREAMS_INTERFACE_XATTR) return -EOPNOTSUPP; ni = ntfs_pathname_to_inode(ctx->vol, NULL, path); if (!ni) return -errno; actx = ntfs_attr_get_search_ctx(ni, NULL); if (!actx) { ret = -errno; ntfs_inode_close(ni); goto exit; } while (!ntfs_attr_lookup(AT_DATA, NULL, 0, CASE_SENSITIVE, 0, NULL, 0, actx)) { char *tmp_name = NULL; int tmp_name_len; if (!actx->attr->name_length) continue; tmp_name_len = ntfs_ucstombs((ntfschar *)((u8*)actx->attr + le16_to_cpu(actx->attr->name_offset)), actx->attr->name_length, &tmp_name, 0); if (tmp_name_len < 0) { ret = -errno; goto exit; } ret += tmp_name_len + nf_ns_xattr_preffix_len + 1; if (size) { if ((size_t)ret <= size) { strcpy(to, nf_ns_xattr_preffix); to += nf_ns_xattr_preffix_len; strncpy(to, tmp_name, tmp_name_len); to += tmp_name_len; *to = 0; to++; } else { free(tmp_name); ret = -ERANGE; goto exit; } } free(tmp_name); } if (errno != ENOENT) ret = -errno; exit: if (actx) ntfs_attr_put_search_ctx(actx); if (ntfs_inode_close(ni)) set_fuse_error(&ret); return ret; } static int ntfs_fuse_getxattr_windows(const char *path, const char *name, char *value, size_t size) { ntfs_attr_search_ctx *actx = NULL; ntfs_inode *ni; char *to = value; int ret = 0; if (strcmp(name, "ntfs.streams.list")) return -EOPNOTSUPP; ni = ntfs_pathname_to_inode(ctx->vol, NULL, path); if (!ni) return -errno; actx = ntfs_attr_get_search_ctx(ni, NULL); if (!actx) { ret = -errno; ntfs_inode_close(ni); goto exit; } while (!ntfs_attr_lookup(AT_DATA, NULL, 0, CASE_SENSITIVE, 0, NULL, 0, actx)) { char *tmp_name = NULL; int tmp_name_len; if (!actx->attr->name_length) continue; tmp_name_len = ntfs_ucstombs((ntfschar *)((u8*)actx->attr + le16_to_cpu(actx->attr->name_offset)), actx->attr->name_length, &tmp_name, 0); if (tmp_name_len < 0) { ret = -errno; goto exit; } if (ret) ret++; /* For space delimiter. */ ret += tmp_name_len; if (size) { if ((size_t)ret <= size) { /* Don't add space to the beginning of line. */ if (to != value) { *to = '\0'; to++; } strncpy(to, tmp_name, tmp_name_len); to += tmp_name_len; } else { free(tmp_name); ret = -ERANGE; goto exit; } } free(tmp_name); } if (errno != ENOENT) ret = -errno; exit: if (actx) ntfs_attr_put_search_ctx(actx); if (ntfs_inode_close(ni)) set_fuse_error(&ret); return ret; } static int ntfs_fuse_getxattr(const char *path, const char *name, char *value, size_t size) { ntfs_inode *ni; ntfs_attr *na = NULL; ntfschar *lename = NULL; int res, lename_len; if (ctx->streams == NF_STREAMS_INTERFACE_WINDOWS) return ntfs_fuse_getxattr_windows(path, name, value, size); if (ctx->streams != NF_STREAMS_INTERFACE_XATTR) return -EOPNOTSUPP; if (strncmp(name, nf_ns_xattr_preffix, nf_ns_xattr_preffix_len) || strlen(name) == (size_t)nf_ns_xattr_preffix_len) return -ENODATA; ni = ntfs_pathname_to_inode(ctx->vol, NULL, path); if (!ni) return -errno; lename_len = ntfs_mbstoucs(name + nf_ns_xattr_preffix_len, &lename); if (lename_len == -1) { res = -errno; goto exit; } na = ntfs_attr_open(ni, AT_DATA, lename, lename_len); if (!na) { res = -ENODATA; goto exit; } if (size) { if (size >= na->data_size) { res = ntfs_attr_pread(na, 0, na->data_size, value); if (res != na->data_size) res = -errno; } else res = -ERANGE; } else res = na->data_size; exit: if (na) ntfs_attr_close(na); free(lename); if (ntfs_inode_close(ni)) set_fuse_error(&res); return res; } static int ntfs_fuse_setxattr(const char *path, const char *name, const char *value, size_t size, int flags) { ntfs_inode *ni; ntfs_attr *na = NULL; ntfschar *lename = NULL; int res, lename_len; if (ctx->streams != NF_STREAMS_INTERFACE_XATTR) return -EOPNOTSUPP; if (strncmp(name, nf_ns_xattr_preffix, nf_ns_xattr_preffix_len) || strlen(name) == (size_t)nf_ns_xattr_preffix_len) return -EOPNOTSUPP; ni = ntfs_pathname_to_inode(ctx->vol, NULL, path); if (!ni) return -errno; lename_len = ntfs_mbstoucs(name + nf_ns_xattr_preffix_len, &lename); if (lename_len == -1) { res = -errno; goto exit; } na = ntfs_attr_open(ni, AT_DATA, lename, lename_len); if (na && flags == XATTR_CREATE) { res = -EEXIST; goto exit; } if (!na) { if (flags == XATTR_REPLACE) { res = -ENODATA; goto exit; } if (ntfs_attr_add(ni, AT_DATA, lename, lename_len, NULL, 0)) { res = -errno; goto exit; } na = ntfs_attr_open(ni, AT_DATA, lename, lename_len); if (!na) { res = -errno; goto exit; } } else { if (ntfs_attr_truncate(na, (s64)size)) { res = -errno; goto exit; } } res = ntfs_attr_pwrite(na, 0, size, value); if (res != (s64) size) res = -errno; else res = 0; exit: if (na) ntfs_attr_close(na); free(lename); if (ntfs_inode_close(ni)) set_fuse_error(&res); return res; } static int ntfs_fuse_removexattr(const char *path, const char *name) { ntfs_inode *ni; ntfschar *lename = NULL; int res = 0, lename_len; if (ctx->streams != NF_STREAMS_INTERFACE_XATTR) return -EOPNOTSUPP; if (strncmp(name, nf_ns_xattr_preffix, nf_ns_xattr_preffix_len) || strlen(name) == (size_t)nf_ns_xattr_preffix_len) return -ENODATA; ni = ntfs_pathname_to_inode(ctx->vol, NULL, path); if (!ni) return -errno; lename_len = ntfs_mbstoucs(name + nf_ns_xattr_preffix_len, &lename); if (lename_len == -1) { res = -errno; goto exit; } if (ntfs_attr_remove(ni, AT_DATA, lename, lename_len)) { if (errno == ENOENT) errno = ENODATA; res = -errno; } exit: free(lename); if (ntfs_inode_close(ni)) set_fuse_error(&res); return res; } #endif /* HAVE_SETXATTR */ static void ntfs_close(void) { if (!ctx) return; if (!ctx->vol) return; if (ctx->mounted) ntfs_log_info("Unmounting %s (%s)\n", opts.device, ctx->vol->vol_name); if (ntfs_umount(ctx->vol, FALSE)) ntfs_log_perror("Failed to close volume %s", opts.device); /* Foxconn added start pling 05/05/2009 */ /* Remove file that stores the volname */ else { char *devname; char filename[64]; devname = strstr(opts.device, "sd"); if (devname) { sprintf(filename, USB_VOL_NAME_FILE, devname); unlink(filename); } } /* Foxconn added end pling 05/05/2009 */ ctx->vol = NULL; } static void ntfs_fuse_destroy2(void *unused __attribute__((unused))) { ntfs_close(); } static struct fuse_operations ntfs_3g_ops = { .getattr = ntfs_fuse_getattr, .readlink = ntfs_fuse_readlink, .readdir = ntfs_fuse_readdir, .open = ntfs_fuse_open, .read = ntfs_fuse_read, .write = ntfs_fuse_write, .truncate = ntfs_fuse_truncate, .statfs = ntfs_fuse_statfs, .chmod = ntfs_fuse_chmod, .chown = ntfs_fuse_chown, .create = ntfs_fuse_create_file, .mknod = ntfs_fuse_mknod, .symlink = ntfs_fuse_symlink, .link = ntfs_fuse_link, .unlink = ntfs_fuse_unlink, .rename = ntfs_fuse_rename, .mkdir = ntfs_fuse_mkdir, .rmdir = ntfs_fuse_rmdir, .utime = ntfs_fuse_utime, .bmap = ntfs_fuse_bmap, .destroy = ntfs_fuse_destroy2, #ifdef HAVE_SETXATTR .getxattr = ntfs_fuse_getxattr, .setxattr = ntfs_fuse_setxattr, .removexattr = ntfs_fuse_removexattr, .listxattr = ntfs_fuse_listxattr, #endif /* HAVE_SETXATTR */ #if defined(__APPLE__) || defined(__DARWIN__) .init = ntfs_macfuse_init, /* MacFUSE extensions. */ .getxtimes = ntfs_macfuse_getxtimes, .setcrtime = ntfs_macfuse_setcrtime, .setbkuptime = ntfs_macfuse_setbkuptime #endif /* defined(__APPLE__) || defined(__DARWIN__) */ }; static int ntfs_fuse_init(void) { ctx = ntfs_calloc(sizeof(ntfs_fuse_context_t)); if (!ctx) return -1; *ctx = (ntfs_fuse_context_t) { .uid = getuid(), .gid = getgid(), #if defined(linux) .streams = NF_STREAMS_INTERFACE_XATTR, #else .streams = NF_STREAMS_INTERFACE_NONE, #endif .atime = ATIME_RELATIVE, .silent = TRUE, .recover = TRUE }; return 0; } static int ntfs_open(const char *device) { unsigned long flags = 0; if (!ctx->blkdev) flags |= MS_EXCLUSIVE; if (ctx->ro) flags |= MS_RDONLY; if (ctx->recover) flags |= MS_RECOVER; if (ctx->hiberfile) flags |= MS_IGNORE_HIBERFILE; ctx->vol = ntfs_mount(device, flags); if (!ctx->vol) { ntfs_log_perror("Failed to mount '%s'", device); goto err_out; } ctx->vol->free_clusters = ntfs_attr_get_free_bits(ctx->vol->lcnbmp_na); if (ctx->vol->free_clusters < 0) { ntfs_log_perror("Failed to read NTFS $Bitmap"); goto err_out; } ctx->vol->free_mft_records = ntfs_get_nr_free_mft_records(ctx->vol); if (ctx->vol->free_mft_records < 0) { ntfs_log_perror("Failed to calculate free MFT records"); goto err_out; } if (ctx->hiberfile && ntfs_volume_check_hiberfile(ctx->vol, 0)) { if (errno != EPERM) goto err_out; if (ntfs_fuse_rm("/hiberfil.sys")) goto err_out; } errno = 0; err_out: return ntfs_volume_error(errno); } #define STRAPPEND_MAX_INSIZE 8192 #define strappend_is_large(x) ((x) > STRAPPEND_MAX_INSIZE) static int strappend(char **dest, const char *append) { char *p; size_t size_append, size_dest = 0; if (!dest) return -1; if (!append) return 0; size_append = strlen(append); if (*dest) size_dest = strlen(*dest); if (strappend_is_large(size_dest) || strappend_is_large(size_append)) { errno = EOVERFLOW; ntfs_log_perror("%s: Too large input buffer", EXEC_NAME); return -1; } p = realloc(*dest, size_dest + size_append + 1); if (!p) { ntfs_log_perror("%s: Memory realloction failed", EXEC_NAME); return -1; } *dest = p; strcpy(*dest + size_dest, append); return 0; } static int bogus_option_value(char *val, const char *s) { if (val) { ntfs_log_error("'%s' option shouldn't have value.\n", s); return -1; } return 0; } static int missing_option_value(char *val, const char *s) { if (!val) { ntfs_log_error("'%s' option should have a value.\n", s); return -1; } return 0; } static char *parse_mount_options(const char *orig_opts) { char *options, *s, *opt, *val, *ret = NULL; BOOL no_def_opts = FALSE; int default_permissions = 0; options = strdup(orig_opts ? orig_opts : ""); if (!options) { ntfs_log_perror("%s: strdup failed", EXEC_NAME); return NULL; } s = options; while (s && *s && (val = strsep(&s, ","))) { opt = strsep(&val, "="); if (!strcmp(opt, "ro")) { /* Read-only mount. */ if (bogus_option_value(val, "ro")) goto err_exit; ctx->ro = TRUE; if (strappend(&ret, "ro,")) goto err_exit; } else if (!strcmp(opt, "noatime")) { if (bogus_option_value(val, "noatime")) goto err_exit; ctx->atime = ATIME_DISABLED; } else if (!strcmp(opt, "atime")) { if (bogus_option_value(val, "atime")) goto err_exit; ctx->atime = ATIME_ENABLED; } else if (!strcmp(opt, "relatime")) { if (bogus_option_value(val, "relatime")) goto err_exit; ctx->atime = ATIME_RELATIVE; } else if (!strcmp(opt, "fake_rw")) { if (bogus_option_value(val, "fake_rw")) goto err_exit; ctx->ro = TRUE; } else if (!strcmp(opt, "fsname")) { /* Filesystem name. */ /* * We need this to be able to check whether filesystem * mounted or not. */ ntfs_log_error("'fsname' is unsupported option.\n"); goto err_exit; } else if (!strcmp(opt, "no_def_opts")) { if (bogus_option_value(val, "no_def_opts")) goto err_exit; no_def_opts = TRUE; /* Don't add default options. */ } else if (!strcmp(opt, "default_permissions")) { default_permissions = 1; } else if (!strcmp(opt, "umask")) { if (missing_option_value(val, "umask")) goto err_exit; sscanf(val, "%o", &ctx->fmask); ctx->dmask = ctx->fmask; if (ctx->fmask) default_permissions = 1; } else if (!strcmp(opt, "fmask")) { if (missing_option_value(val, "fmask")) goto err_exit; sscanf(val, "%o", &ctx->fmask); if (ctx->fmask) default_permissions = 1; } else if (!strcmp(opt, "dmask")) { if (missing_option_value(val, "dmask")) goto err_exit; sscanf(val, "%o", &ctx->dmask); if (ctx->dmask) default_permissions = 1; } else if (!strcmp(opt, "uid")) { if (missing_option_value(val, "uid")) goto err_exit; sscanf(val, "%i", &ctx->uid); default_permissions = 1; } else if (!strcmp(opt, "gid")) { if (missing_option_value(val, "gid")) goto err_exit; sscanf(val, "%i", &ctx->gid); default_permissions = 1; } else if (!strcmp(opt, "show_sys_files")) { if (bogus_option_value(val, "show_sys_files")) goto err_exit; ctx->show_sys_files = TRUE; } else if (!strcmp(opt, "silent")) { if (bogus_option_value(val, "silent")) goto err_exit; ctx->silent = TRUE; } else if (!strcmp(opt, "recover")) { if (bogus_option_value(val, "recover")) goto err_exit; ctx->recover = TRUE; } else if (!strcmp(opt, "norecover")) { if (bogus_option_value(val, "norecover")) goto err_exit; ctx->recover = FALSE; } else if (!strcmp(opt, "remove_hiberfile")) { if (bogus_option_value(val, "remove_hiberfile")) goto err_exit; ctx->hiberfile = TRUE; } else if (!strcmp(opt, "locale")) { if (missing_option_value(val, "locale")) goto err_exit; setlocale(LC_ALL, val); } else if (!strcmp(opt, "streams_interface")) { if (missing_option_value(val, "streams_interface")) goto err_exit; if (!strcmp(val, "none")) ctx->streams = NF_STREAMS_INTERFACE_NONE; else if (!strcmp(val, "xattr")) ctx->streams = NF_STREAMS_INTERFACE_XATTR; else if (!strcmp(val, "windows")) ctx->streams = NF_STREAMS_INTERFACE_WINDOWS; else { ntfs_log_error("Invalid named data streams " "access interface.\n"); goto err_exit; } } else if (!strcmp(opt, "noauto")) { /* Don't pass noauto option to fuse. */ } else if (!strcmp(opt, "debug")) { if (bogus_option_value(val, "debug")) goto err_exit; ctx->debug = TRUE; ntfs_log_set_levels(NTFS_LOG_LEVEL_DEBUG); ntfs_log_set_levels(NTFS_LOG_LEVEL_TRACE); } else if (!strcmp(opt, "no_detach")) { if (bogus_option_value(val, "no_detach")) goto err_exit; ctx->no_detach = TRUE; } else if (!strcmp(opt, "remount")) { ntfs_log_error("Remounting is not supported at present." " You have to umount volume and then " "mount it once again.\n"); goto err_exit; } else if (!strcmp(opt, "blksize")) { ntfs_log_info("WARNING: blksize option is ignored " "because ntfs-3g must calculate it.\n"); } else { /* Probably FUSE option. */ if (strappend(&ret, opt)) goto err_exit; if (val) { if (strappend(&ret, "=")) goto err_exit; if (strappend(&ret, val)) goto err_exit; } if (strappend(&ret, ",")) goto err_exit; } } if (!no_def_opts && strappend(&ret, def_opts)) goto err_exit; if (default_permissions && strappend(&ret, "default_permissions,")) goto err_exit; if (ctx->atime == ATIME_RELATIVE && strappend(&ret, "relatime,")) goto err_exit; else if (ctx->atime == ATIME_ENABLED && strappend(&ret, "atime,")) goto err_exit; else if (ctx->atime == ATIME_DISABLED && strappend(&ret, "noatime,")) goto err_exit; if (strappend(&ret, "fsname=")) goto err_exit; if (strappend(&ret, opts.device)) goto err_exit; exit: free(options); return ret; err_exit: free(ret); ret = NULL; goto exit; } static void usage(void) { ntfs_log_info(usage_msg, EXEC_NAME, VERSION, FUSE_TYPE, fuse_version(), EXEC_NAME, ntfs_home); } #ifndef HAVE_REALPATH /* If there is no realpath() on the system, provide a dummy one. */ static char *realpath(const char *path, char *resolved_path) { strncpy(resolved_path, path, PATH_MAX); resolved_path[PATH_MAX] = '\0'; return resolved_path; } #endif /** * parse_options - Read and validate the programs command line * Read the command line, verify the syntax and parse the options. * * Return: 0 success, -1 error. */ static int parse_options(int argc, char *argv[]) { int c; static const char *sopt = "-o:hvV"; static const struct option lopt[] = { { "options", required_argument, NULL, 'o' }, { "help", no_argument, NULL, 'h' }, { "verbose", no_argument, NULL, 'v' }, { "version", no_argument, NULL, 'V' }, { NULL, 0, NULL, 0 } }; opterr = 0; /* We'll handle the errors, thank you. */ while ((c = getopt_long(argc, argv, sopt, lopt, NULL)) != -1) { switch (c) { case 1: /* A non-option argument */ if (!opts.device) { opts.device = ntfs_malloc(PATH_MAX + 1); if (!opts.device) return -1; /* Canonicalize device name (mtab, etc) */ if (!realpath(optarg, opts.device)) { ntfs_log_perror("%s: Failed to access " "volume '%s'", EXEC_NAME, optarg); free(opts.device); opts.device = NULL; return -1; } } else if (!opts.mnt_point) { opts.mnt_point = optarg; } else { ntfs_log_error("%s: You must specify exactly one " "device and exactly one mount " "point.\n", EXEC_NAME); return -1; } break; case 'o': if (opts.options) if (strappend(&opts.options, ",")) return -1; if (strappend(&opts.options, optarg)) return -1; break; case 'h': usage(); exit(9); case 'v': /* * We must handle the 'verbose' option even if * we don't use it because mount(8) passes it. */ break; case 'V': ntfs_log_info("%s %s %s %d\n", EXEC_NAME, VERSION, FUSE_TYPE, fuse_version()); exit(0); default: ntfs_log_error("%s: Unknown option '%s'.\n", EXEC_NAME, argv[optind - 1]); return -1; } } if (!opts.device) { ntfs_log_error("%s: No device is specified.\n", EXEC_NAME); return -1; } if (!opts.mnt_point) { ntfs_log_error("%s: No mountpoint is specified.\n", EXEC_NAME); return -1; } return 0; } #if defined(linux) || defined(__uClinux__) static const char *dev_fuse_msg = "HINT: You should be root, or make ntfs-3g setuid root, or load the FUSE\n" " kernel module as root ('modprobe fuse' or 'insmod /fuse.ko'" " or insmod /fuse.o'). Make also sure that the fuse device" " exists. It's usually either /dev/fuse or /dev/misc/fuse."; static const char *fuse26_kmod_msg = "WARNING: Deficient Linux kernel detected. Some driver features are\n" " not available (swap file on NTFS, boot from NTFS by LILO), and\n" " unmount is not safe unless it's made sure the ntfs-3g process\n" " naturally terminates after calling 'umount'. If you wish this\n" " message to disappear then you should upgrade to at least kernel\n" " version 2.6.20, or request help from your distribution to fix\n" " the kernel problem. The below web page has more information:\n" " http://ntfs-3g.org/support.html#fuse26\n" "\n"; static void mknod_dev_fuse(const char *dev) { struct stat st; if (stat(dev, &st) && (errno == ENOENT)) { mode_t mask = umask(0); if (mknod(dev, S_IFCHR | 0666, makedev(10, 229))) { ntfs_log_perror("Failed to create '%s'", dev); if (errno == EPERM) ntfs_log_error("%s", dev_fuse_msg); } umask(mask); } } static void create_dev_fuse(void) { mknod_dev_fuse("/dev/fuse"); #ifdef __UCLIBC__ { struct stat st; /* The fuse device is under /dev/misc using devfs. */ if (stat("/dev/misc", &st) && (errno == ENOENT)) { mode_t mask = umask(0); mkdir("/dev/misc", 0775); umask(mask); } mknod_dev_fuse("/dev/misc/fuse"); } #endif } static fuse_fstype get_fuse_fstype(void) { char buf[256]; fuse_fstype fstype = FSTYPE_NONE; FILE *f = fopen("/proc/filesystems", "r"); if (!f) { ntfs_log_perror("Failed to open /proc/filesystems"); return FSTYPE_UNKNOWN; } while (fgets(buf, sizeof(buf), f)) { if (strstr(buf, "fuseblk\n")) { fstype = FSTYPE_FUSEBLK; break; } if (strstr(buf, "fuse\n")) fstype = FSTYPE_FUSE; } fclose(f); return fstype; } static fuse_fstype load_fuse_module(void) { int i; struct stat st; pid_t pid; const char *cmd = "/sbin/modprobe"; struct timespec req = { 0, 100000000 }; /* 100 msec */ fuse_fstype fstype; if (!stat(cmd, &st) && !geteuid()) { pid = fork(); if (!pid) { execl(cmd, cmd, "fuse", NULL); _exit(1); } else if (pid != -1) waitpid(pid, NULL, 0); } for (i = 0; i < 10; i++) { /* * We sleep first because despite the detection of the loaded * FUSE kernel module, fuse_mount() can still fail if it's not * fully functional/initialized. Note, of course this is still * unreliable but usually helps. */ nanosleep(&req, NULL); fstype = get_fuse_fstype(); if (fstype != FSTYPE_NONE) break; } return fstype; } #endif static struct fuse_chan *try_fuse_mount(char *parsed_options) { struct fuse_chan *fc = NULL; struct fuse_args margs = FUSE_ARGS_INIT(0, NULL); /* The fuse_mount() options get modified, so we always rebuild it */ if ((fuse_opt_add_arg(&margs, EXEC_NAME) == -1 || fuse_opt_add_arg(&margs, "-o") == -1 || fuse_opt_add_arg(&margs, parsed_options) == -1)) { ntfs_log_error("Failed to set FUSE options.\n"); goto free_args; } fc = fuse_mount(opts.mnt_point, &margs); free_args: fuse_opt_free_args(&margs); return fc; } static int set_fuseblk_options(char **parsed_options) { char options[64]; long pagesize; u32 blksize = ctx->vol->cluster_size; pagesize = sysconf(_SC_PAGESIZE); if (pagesize < 1) pagesize = 4096; if (blksize > (u32)pagesize) blksize = pagesize; snprintf(options, sizeof(options), ",blkdev,blksize=%u", blksize); if (strappend(parsed_options, options)) return -1; return 0; } static struct fuse *mount_fuse(char *parsed_options) { struct fuse *fh = NULL; struct fuse_args args = FUSE_ARGS_INIT(0, NULL); ctx->fc = try_fuse_mount(parsed_options); if (!ctx->fc) return NULL; if (fuse_opt_add_arg(&args, "") == -1) goto err; /* Foxconn modified start pling 12/23/2009 */ /* Use direct_io to improve NTFS write performance */ //if (fuse_opt_add_arg(&args, "-ouse_ino,kernel_cache,attr_timeout=0") == -1) if (fuse_opt_add_arg(&args, "-ouse_ino,kernel_cache,attr_timeout=0,direct_io") == -1) /* Foxconn modified end pling 12/23/2009 */ goto err; if (ctx->debug) if (fuse_opt_add_arg(&args, "-odebug") == -1) goto err; fh = fuse_new(ctx->fc, &args , &ntfs_3g_ops, sizeof(ntfs_3g_ops), NULL); if (!fh) goto err; if (fuse_set_signal_handlers(fuse_get_session(fh))) goto err_destory; out: fuse_opt_free_args(&args); return fh; err_destory: fuse_destroy(fh); fh = NULL; err: fuse_unmount(opts.mnt_point, ctx->fc); goto out; } static void setup_logging(char *parsed_options) { if (!ctx->no_detach) { if (daemon(0, ctx->debug)) ntfs_log_error("Failed to daemonize.\n"); else if (!ctx->debug) { #ifndef DEBUG ntfs_log_set_handler(ntfs_log_handler_syslog); /* Override default libntfs identify. */ openlog(EXEC_NAME, LOG_PID, LOG_DAEMON); #endif } } ntfs_log_info("Version %s %s %d\n", VERSION, FUSE_TYPE, fuse_version()); ntfs_log_info("Mounted %s (%s, label \"%s\", NTFS %d.%d)\n", opts.device, (ctx->ro) ? "Read-Only" : "Read-Write", ctx->vol->vol_name, ctx->vol->major_ver, ctx->vol->minor_ver); ntfs_log_info("Cmdline options: %s\n", opts.options ? opts.options : ""); ntfs_log_info("Mount options: %s\n", parsed_options); /* Foxconn added start pling 05/05/2009 */ /* Store the volume label under /tmp for later use */ FILE *fp = NULL; char *devname; char filename[64]; devname = strstr(opts.device, "sd"); if (devname) { sprintf(filename, USB_VOL_NAME_FILE, devname); fp = fopen(filename, "w"); if (fp != NULL) { fprintf(fp, "%s\n", ctx->vol->vol_name); fclose(fp); } } /* Foxconn added end pling 05/05/2009 */ } int main(int argc, char *argv[]) { char *parsed_options = NULL; struct fuse *fh; fuse_fstype fstype = FSTYPE_UNKNOWN; struct stat sbuf; int err, fd; /* * Make sure file descriptors 0, 1 and 2 are open, * otherwise chaos would ensue. */ do { fd = open("/dev/null", O_RDWR); if (fd > 2) close(fd); } while (fd >= 0 && fd <= 2); #ifndef FUSE_INTERNAL if ((getuid() != geteuid()) || (getgid() != getegid())) { fprintf(stderr, "%s", setuid_msg); return NTFS_VOLUME_INSECURE; } #endif if (drop_privs()) return NTFS_VOLUME_NO_PRIVILEGE; ntfs_set_locale(); ntfs_log_set_handler(ntfs_log_handler_stderr); if (parse_options(argc, argv)) { usage(); return NTFS_VOLUME_SYNTAX_ERROR; } if (ntfs_fuse_init()) { err = NTFS_VOLUME_OUT_OF_MEMORY; goto err2; } parsed_options = parse_mount_options(opts.options); if (!parsed_options) { err = NTFS_VOLUME_SYNTAX_ERROR; goto err_out; } #if defined(linux) || defined(__uClinux__) fstype = get_fuse_fstype(); err = NTFS_VOLUME_NO_PRIVILEGE; if (restore_privs()) goto err_out; if (fstype == FSTYPE_NONE || fstype == FSTYPE_UNKNOWN) fstype = load_fuse_module(); create_dev_fuse(); if (drop_privs()) goto err_out; #endif if (stat(opts.device, &sbuf)) { ntfs_log_perror("Failed to access '%s'", opts.device); err = NTFS_VOLUME_NO_PRIVILEGE; goto err_out; } #if !(defined(__sun) && defined (__SVR4)) /* Always use fuseblk for block devices unless it's surely missing. */ if (S_ISBLK(sbuf.st_mode) && (fstype != FSTYPE_FUSE)) ctx->blkdev = TRUE; #endif #ifndef FUSE_INTERNAL if (getuid() && ctx->blkdev) { ntfs_log_error("%s", unpriv_fuseblk_msg); goto err2; } #endif err = ntfs_open(opts.device); if (err) goto err_out; /* We must do this after ntfs_open() to be able to set the blksize */ if (ctx->blkdev && set_fuseblk_options(&parsed_options)) goto err_out; fh = mount_fuse(parsed_options); if (!fh) { err = NTFS_VOLUME_FUSE_ERROR; goto err_out; } ctx->mounted = TRUE; #if defined(linux) || defined(__uClinux__) if (S_ISBLK(sbuf.st_mode) && (fstype == FSTYPE_FUSE)) ntfs_log_info("%s", fuse26_kmod_msg); #endif setup_logging(parsed_options); fuse_loop(fh); err = 0; fuse_unmount(opts.mnt_point, ctx->fc); fuse_destroy(fh); err_out: ntfs_mount_error(opts.device, opts.mnt_point, err); err2: ntfs_close(); free(ctx); free(parsed_options); free(opts.options); free(opts.device); return err; }