X-Git-Url: https://wimlib.net/git/?p=wimlib;a=blobdiff_plain;f=src%2Fmount_image.c;h=41478d92a43dd8566c83c53a3f15bc35ff48c01a;hp=f3e0a4276e8db7a34f4c3ae97977336ed53825fe;hb=dabcd6fe9a32f58709c513d6bf641773baa8f6aa;hpb=466646c4f936eb3387b76dcb9a41e7b8cfb98fe2 diff --git a/src/mount_image.c b/src/mount_image.c index f3e0a427..41478d92 100644 --- a/src/mount_image.c +++ b/src/mount_image.c @@ -41,12 +41,13 @@ #include "wimlib/encoding.h" #include "wimlib/file_io.h" +#include "wimlib/dentry.h" +#include "wimlib/inode.h" #include "wimlib/lookup_table.h" #include "wimlib/metadata.h" #include "wimlib/paths.h" #include "wimlib/reparse.h" #include "wimlib/resource.h" -#include "wimlib/swm.h" #include "wimlib/timestamp.h" #include "wimlib/version.h" #include "wimlib/write.h" @@ -80,7 +81,7 @@ struct wimfs_fd { struct wim_inode *f_inode; struct wim_lookup_table_entry *f_lte; - int staging_fd; + struct filedes staging_fd; u16 idx; u32 stream_id; }; @@ -116,9 +117,9 @@ struct wimfs_context { /* Name and message queue descriptors for message queues between the * filesystem daemon process and the unmount process. These are used * when the filesystem is unmounted and the process running - * wimlib_unmount_image() (i.e. the `imagex unmount' command) needs to - * communicate with the filesystem daemon running fuse_main() (i.e. the - * daemon created by the `imagex mount' or `imagex mountrw' commands */ + * wimlib_unmount_image() needs to communicate with the filesystem + * daemon running fuse_main() (i.e. the process created by a call to + * wimlib_mount_image(). */ char *unmount_to_daemon_mq_name; char *daemon_to_unmount_mq_name; mqd_t unmount_to_daemon_mq; @@ -153,12 +154,6 @@ wimfs_get_WIMStruct(void) return wimfs_get_context()->wim; } -static inline bool -wimfs_ctx_readonly(const struct wimfs_context *ctx) -{ - return (ctx->mount_flags & WIMLIB_MOUNT_FLAG_READWRITE) == 0; -} - static inline int get_lookup_flags(const struct wimfs_context *ctx) { @@ -169,7 +164,8 @@ get_lookup_flags(const struct wimfs_context *ctx) static inline int flags_writable(int open_flags) { - return open_flags & (O_RDWR | O_WRONLY); + int accmode = (open_flags & O_ACCMODE); + return (accmode == O_RDWR || accmode == O_WRONLY); } /* @@ -179,7 +175,6 @@ flags_writable(int open_flags) * @stream_id: ID of the stream we're opening * @lte: Lookup table entry for the stream (may be NULL) * @fd_ret: Return the allocated file descriptor if successful. - * @readonly: True if this is a read-only mount. * * Return 0 iff successful or error code if unsuccessful. */ @@ -187,15 +182,12 @@ static int alloc_wimfs_fd(struct wim_inode *inode, u32 stream_id, struct wim_lookup_table_entry *lte, - struct wimfs_fd **fd_ret, - bool readonly) + struct wimfs_fd **fd_ret) { static const u16 fds_per_alloc = 8; static const u16 max_fds = 0xffff; int ret; - pthread_mutex_lock(&inode->i_mutex); - DEBUG("Allocating fd for stream ID %u from inode %#"PRIx64" " "(open = %u, allocated = %u)", stream_id, inode->i_ino, inode->i_num_opened_fds, @@ -231,15 +223,15 @@ alloc_wimfs_fd(struct wim_inode *inode, ret = -ENOMEM; break; } - fd->f_inode = inode; - fd->f_lte = lte; - fd->staging_fd = -1; - fd->idx = i; - fd->stream_id = stream_id; - *fd_ret = fd; - inode->i_fds[i] = fd; + fd->f_inode = inode; + fd->f_lte = lte; + filedes_invalidate(&fd->staging_fd); + fd->idx = i; + fd->stream_id = stream_id; + *fd_ret = fd; + inode->i_fds[i] = fd; inode->i_num_opened_fds++; - if (lte && !readonly) + if (lte) lte->num_opened_fds++; DEBUG("Allocated fd (idx = %u)", fd->idx); ret = 0; @@ -247,7 +239,6 @@ alloc_wimfs_fd(struct wim_inode *inode, } } out: - pthread_mutex_unlock(&inode->i_mutex); return ret; } @@ -255,9 +246,6 @@ static void inode_put_fd(struct wim_inode *inode, struct wimfs_fd *fd) { wimlib_assert(inode != NULL); - - pthread_mutex_lock(&inode->i_mutex); - wimlib_assert(fd->f_inode == inode); wimlib_assert(inode->i_num_opened_fds != 0); wimlib_assert(fd->idx < inode->i_num_allocated_fds); @@ -265,11 +253,12 @@ inode_put_fd(struct wim_inode *inode, struct wimfs_fd *fd) inode->i_fds[fd->idx] = NULL; FREE(fd); - if (--inode->i_num_opened_fds == 0 && inode->i_nlink == 0) { - pthread_mutex_unlock(&inode->i_mutex); - free_inode(inode); - } else { - pthread_mutex_unlock(&inode->i_mutex); + if (--inode->i_num_opened_fds == 0) { + FREE(inode->i_fds); + inode->i_fds = NULL; + inode->i_num_allocated_fds = 0; + if (inode->i_nlink == 0) + free_inode(inode); } } @@ -284,9 +273,9 @@ lte_put_fd(struct wim_lookup_table_entry *lte, struct wimfs_fd *fd) /* Close staging file descriptor if needed. */ if (lte->resource_location == RESOURCE_IN_STAGING_FILE - && fd->staging_fd != -1) + && filedes_valid(&fd->staging_fd)) { - if (close(fd->staging_fd) != 0) { + if (filedes_close(&fd->staging_fd)) { ERROR_WITH_ERRNO("Failed to close staging file"); return -errno; } @@ -335,7 +324,7 @@ create_dentry(struct fuse_context *fuse_ctx, const char *path, struct wimfs_context *wimfs_ctx = WIMFS_CTX(fuse_ctx); int ret; - parent = get_parent_dentry(wimfs_ctx->wim, path); + parent = get_parent_dentry(wimfs_ctx->wim, path, WIMLIB_CASE_SENSITIVE); if (!parent) return -errno; @@ -343,7 +332,7 @@ create_dentry(struct fuse_context *fuse_ctx, const char *path, return -ENOTDIR; basename = path_basename(path); - if (get_dentry_child_with_name(parent, basename)) + if (get_dentry_child_with_name(parent, basename, WIMLIB_CASE_SENSITIVE)) return -EEXIST; ret = new_dentry_with_inode(basename, &new); @@ -373,6 +362,17 @@ create_dentry(struct fuse_context *fuse_ctx, const char *path, return 0; } +static struct wim_inode * +wim_pathname_to_inode(WIMStruct *wim, const tchar *path) +{ + struct wim_dentry *dentry; + dentry = get_dentry(wim, path, WIMLIB_CASE_SENSITIVE); + if (dentry) + return dentry->d_inode; + else + return NULL; +} + /* Remove a dentry from a mounted WIM image; i.e. remove an alias for the * corresponding inode. * @@ -440,7 +440,7 @@ inode_to_stbuf(const struct wim_inode *inode, stbuf->st_ino = (ino_t)inode->i_ino; stbuf->st_nlink = inode->i_nlink; if (lte) - stbuf->st_size = wim_resource_size(lte); + stbuf->st_size = lte->size; else stbuf->st_size = 0; #ifdef HAVE_STAT_NANOSECOND_PRECISION @@ -488,7 +488,7 @@ create_staging_file(char **name_ret, struct wimfs_context *ctx) static const size_t STAGING_FILE_NAME_LEN = 20; name_len = ctx->staging_dir_name_len + 1 + STAGING_FILE_NAME_LEN; - name = MALLOC(name_len + 1); + name = MALLOC(name_len + 1); if (!name) { errno = ENOMEM; return -1; @@ -572,8 +572,10 @@ extract_resource_to_staging_dir(struct wim_inode *inode, /* Extract the stream to the staging file (possibly truncated) */ if (old_lte) { - extract_size = min(wim_resource_size(old_lte), size); - ret = extract_wim_resource_to_fd(old_lte, fd, extract_size); + struct filedes wimlib_fd; + filedes_init(&wimlib_fd, fd); + extract_size = min(old_lte->size, size); + ret = extract_stream_to_fd(old_lte, &wimlib_fd, extract_size); } else { ret = 0; extract_size = 0; @@ -642,15 +644,18 @@ extract_resource_to_staging_dir(struct wim_inode *inode, struct wimfs_fd *fd = inode->i_fds[i]; if (fd) { if (fd->stream_id == stream_id) { + int raw_fd; + wimlib_assert(fd->f_lte == old_lte); - wimlib_assert(fd->staging_fd == -1); + wimlib_assert(!filedes_valid(&fd->staging_fd)); fd->f_lte = new_lte; new_lte->num_opened_fds++; - fd->staging_fd = open(staging_file_name, O_RDONLY); - if (fd->staging_fd == -1) { + raw_fd = open(staging_file_name, O_RDONLY); + if (raw_fd < 0) { ret = -errno; goto out_revert_fd_changes; } + filedes_init(&fd->staging_fd, raw_fd); } j++; } @@ -663,13 +668,14 @@ extract_resource_to_staging_dir(struct wim_inode *inode, } } - new_lte->refcnt = inode->i_nlink; - new_lte->resource_location = RESOURCE_IN_STAGING_FILE; - new_lte->staging_file_name = staging_file_name; - new_lte->resource_entry.original_size = size; + lte_put_resource(new_lte); + new_lte->refcnt = inode->i_nlink; + new_lte->resource_location = RESOURCE_IN_STAGING_FILE; + new_lte->staging_file_name = staging_file_name; + new_lte->size = size; - lookup_table_insert_unhashed(ctx->wim->lookup_table, new_lte, - inode, stream_id); + add_unhashed_stream(new_lte, inode, stream_id, + &wim_get_current_image_metadata(ctx->wim)->unhashed_streams); *retrieve_lte_pointer(new_lte) = new_lte; *lte = new_lte; return 0; @@ -678,9 +684,9 @@ out_revert_fd_changes: struct wimfs_fd *fd = inode->i_fds[i]; if (fd && fd->stream_id == stream_id && fd->f_lte == new_lte) { fd->f_lte = old_lte; - if (fd->staging_fd != -1) { - close(fd->staging_fd); - fd->staging_fd = -1; + if (filedes_valid(&fd->staging_fd)) { + filedes_close(&fd->staging_fd); + filedes_invalidate(&fd->staging_fd); } j++; } @@ -812,7 +818,7 @@ rebuild_wim(struct wimfs_context *ctx, int write_flags, { int ret; struct wim_lookup_table_entry *lte, *tmp; - WIMStruct *w = ctx->wim; + WIMStruct *wim = ctx->wim; struct wim_image_metadata *imd = wim_get_current_image_metadata(ctx->wim); DEBUG("Closing all staging file descriptors."); @@ -825,7 +831,7 @@ rebuild_wim(struct wimfs_context *ctx, int write_flags, DEBUG("Freeing entries for zero-length streams"); image_for_each_unhashed_stream_safe(lte, tmp, imd) { wimlib_assert(lte->unhashed); - if (wim_resource_size(lte) == 0) { + if (lte->size == 0) { struct wim_lookup_table_entry **back_ptr; back_ptr = retrieve_lte_pointer(lte); *back_ptr = NULL; @@ -834,8 +840,8 @@ rebuild_wim(struct wimfs_context *ctx, int write_flags, } } - xml_update_image_info(w, w->current_image); - ret = wimlib_overwrite(w, write_flags, 0, progress_func); + xml_update_image_info(wim, wim->current_image); + ret = wimlib_overwrite(wim, write_flags, 0, progress_func); if (ret) ERROR("Failed to commit changes to mounted WIM image"); return ret; @@ -864,7 +870,7 @@ set_message_queue_names(struct wimfs_context *ctx, const char *mount_dir) char *p; int ret; - dir_path = realpath(mount_dir, NULL); + dir_path = realpath(mount_dir, NULL); if (!dir_path) { ERROR_WITH_ERRNO("Failed to resolve path \"%s\"", mount_dir); if (errno == ENOMEM) @@ -1294,25 +1300,19 @@ msg_unmount_finished_handler(const void *_msg, void *_handler_ctx) static int unmount_timed_out_cb(void *_handler_ctx) { - struct unmount_msg_handler_context *handler_ctx = _handler_ctx; + const struct unmount_msg_handler_context *handler_ctx = _handler_ctx; - if (handler_ctx->daemon_pid == 0) { - goto out_crashed; - } else { - kill(handler_ctx->daemon_pid, 0); - if (errno == ESRCH) { - goto out_crashed; - } else { - DEBUG("Filesystem daemon is still alive... " - "Waiting another %d seconds\n", - handler_ctx->hdr.timeout_seconds); - return 0; - } + if (handler_ctx->daemon_pid == 0 || + (kill(handler_ctx->daemon_pid, 0) != 0 && errno == ESRCH)) + { + ERROR("The filesystem daemon has crashed! Changes to the " + "WIM may not have been commited."); + return WIMLIB_ERR_FILESYSTEM_DAEMON_CRASHED; } -out_crashed: - ERROR("The filesystem daemon has crashed! Changes to the " - "WIM may not have been commited."); - return WIMLIB_ERR_FILESYSTEM_DAEMON_CRASHED; + + DEBUG("Filesystem daemon is still alive... " + "Waiting another %d seconds", handler_ctx->hdr.timeout_seconds); + return 0; } static int @@ -1522,10 +1522,12 @@ execute_fusermount(const char *dir, bool lazy) "terminate"); return WIMLIB_ERR_FUSERMOUNT; } - if (status != 0) { + + if (!WIFEXITED(status) || WEXITSTATUS(status) != 0) { ERROR("`umount' did not successfully complete"); return WIMLIB_ERR_FUSERMOUNT; } + return 0; } @@ -1539,8 +1541,8 @@ wimfs_chmod(const char *path, mode_t mask) if (!(ctx->mount_flags & WIMLIB_MOUNT_FLAG_UNIX_DATA)) return -EPERM; - ret = lookup_resource(ctx->wim, path, LOOKUP_FLAG_DIRECTORY_OK, - &dentry, NULL, NULL); + ret = wim_pathname_to_stream(ctx->wim, path, LOOKUP_FLAG_DIRECTORY_OK, + &dentry, NULL, NULL); if (ret) return ret; @@ -1560,8 +1562,8 @@ wimfs_chown(const char *path, uid_t uid, gid_t gid) if (!(ctx->mount_flags & WIMLIB_MOUNT_FLAG_UNIX_DATA)) return -EPERM; - ret = lookup_resource(ctx->wim, path, LOOKUP_FLAG_DIRECTORY_OK, - &dentry, NULL, NULL); + ret = wim_pathname_to_stream(ctx->wim, path, LOOKUP_FLAG_DIRECTORY_OK, + &dentry, NULL, NULL); if (ret) return ret; @@ -1602,11 +1604,11 @@ static int wimfs_ftruncate(const char *path, off_t size, struct fuse_file_info *fi) { struct wimfs_fd *fd = (struct wimfs_fd*)(uintptr_t)fi->fh; - int ret = ftruncate(fd->staging_fd, size); + int ret = ftruncate(fd->staging_fd.fd, size); if (ret) return -errno; touch_inode(fd->f_inode); - fd->f_lte->resource_entry.original_size = size; + fd->f_lte->size = size; return 0; } @@ -1621,9 +1623,10 @@ wimfs_getattr(const char *path, struct stat *stbuf) int ret; struct wimfs_context *ctx = wimfs_get_context(); - ret = lookup_resource(ctx->wim, path, - get_lookup_flags(ctx) | LOOKUP_FLAG_DIRECTORY_OK, - &dentry, <e, NULL); + ret = wim_pathname_to_stream(ctx->wim, path, + get_lookup_flags(ctx) | + LOOKUP_FLAG_DIRECTORY_OK, + &dentry, <e, NULL); if (ret != 0) return ret; return inode_to_stbuf(dentry->d_inode, lte, stbuf); @@ -1638,14 +1641,14 @@ wimfs_getxattr(const char *path, const char *name, char *value, int ret; struct wim_inode *inode; struct wim_ads_entry *ads_entry; - size_t res_size; + u64 stream_size; struct wim_lookup_table_entry *lte; struct wimfs_context *ctx = wimfs_get_context(); if (!(ctx->mount_flags & WIMLIB_MOUNT_FLAG_STREAM_INTERFACE_XATTR)) return -ENOTSUP; - if (strlen(name) < 5 || memcmp(name, "user.", 5) != 0) + if (strlen(name) <= 5 || memcmp(name, "user.", 5) != 0) return -ENOATTR; name += 5; @@ -1658,19 +1661,22 @@ wimfs_getxattr(const char *path, const char *name, char *value, return -ENOATTR; lte = ads_entry->lte; - res_size = wim_resource_size(lte); + stream_size = lte->size; if (size == 0) - return res_size; + return stream_size; - if (res_size > size) + if (stream_size > size) return -ERANGE; - ret = read_full_resource_into_buf(lte, value); - if (ret) - return -EIO; - - return res_size; + ret = read_full_stream_into_buf(lte, value); + if (ret) { + if (errno) + return -errno; + else + return -EIO; + } + return stream_size; } #endif @@ -1681,10 +1687,10 @@ wimfs_link(const char *to, const char *from) struct wim_dentry *from_dentry, *from_dentry_parent; const char *link_name; struct wim_inode *inode; - WIMStruct *w = wimfs_get_WIMStruct(); + WIMStruct *wim = wimfs_get_WIMStruct(); int ret; - inode = wim_pathname_to_inode(w, to); + inode = wim_pathname_to_inode(wim, to); if (!inode) return -errno; @@ -1692,14 +1698,15 @@ wimfs_link(const char *to, const char *from) FILE_ATTRIBUTE_REPARSE_POINT)) return -EPERM; - from_dentry_parent = get_parent_dentry(w, from); + from_dentry_parent = get_parent_dentry(wim, from, WIMLIB_CASE_SENSITIVE); if (!from_dentry_parent) return -errno; if (!dentry_is_directory(from_dentry_parent)) return -ENOTDIR; link_name = path_basename(from); - if (get_dentry_child_with_name(from_dentry_parent, link_name)) + if (get_dentry_child_with_name(from_dentry_parent, link_name, + WIMLIB_CASE_SENSITIVE)) return -EEXIST; ret = new_dentry(link_name, &from_dentry); @@ -1736,6 +1743,10 @@ wimfs_listxattr(const char *path, char *list, size_t size) p = list; for (i = 0; i < inode->i_num_ads; i++) { + + if (!ads_entry_is_named_stream(&inode->i_ads_entries[i])) + continue; + char *stream_name_mbs; size_t stream_name_mbs_nbytes; int ret; @@ -1825,8 +1836,8 @@ wimfs_open(const char *path, struct fuse_file_info *fi) struct wimfs_context *ctx = wimfs_get_context(); struct wim_lookup_table_entry **back_ptr; - ret = lookup_resource(ctx->wim, path, get_lookup_flags(ctx), - &dentry, <e, &stream_idx); + ret = wim_pathname_to_stream(ctx->wim, path, get_lookup_flags(ctx), + &dentry, <e, &stream_idx); if (ret) return ret; @@ -1849,7 +1860,7 @@ wimfs_open(const char *path, struct fuse_file_info *fi) if (flags_writable(fi->flags) && (!lte || lte->resource_location != RESOURCE_IN_STAGING_FILE)) { - u64 size = (lte) ? wim_resource_size(lte) : 0; + u64 size = (lte) ? lte->size : 0; ret = extract_resource_to_staging_dir(inode, stream_id, <e, size, ctx); if (ret) @@ -1857,18 +1868,20 @@ wimfs_open(const char *path, struct fuse_file_info *fi) *back_ptr = lte; } - ret = alloc_wimfs_fd(inode, stream_id, lte, &fd, - wimfs_ctx_readonly(ctx)); + ret = alloc_wimfs_fd(inode, stream_id, lte, &fd); if (ret) return ret; if (lte && lte->resource_location == RESOURCE_IN_STAGING_FILE) { - fd->staging_fd = open(lte->staging_file_name, fi->flags); - if (fd->staging_fd == -1) { + int raw_fd; + + raw_fd = open(lte->staging_file_name, fi->flags); + if (raw_fd < 0) { int errno_save = errno; close_wimfs_fd(fd); return -errno_save; } + filedes_init(&fd->staging_fd, raw_fd); } fi->fh = (uintptr_t)fd; return 0; @@ -1882,14 +1895,14 @@ wimfs_opendir(const char *path, struct fuse_file_info *fi) int ret; struct wimfs_fd *fd = NULL; struct wimfs_context *ctx = wimfs_get_context(); - WIMStruct *w = ctx->wim; + WIMStruct *wim = ctx->wim; - inode = wim_pathname_to_inode(w, path); + inode = wim_pathname_to_inode(wim, path); if (!inode) return -errno; if (!inode_is_directory(inode)) return -ENOTDIR; - ret = alloc_wimfs_fd(inode, 0, NULL, &fd, wimfs_ctx_readonly(ctx)); + ret = alloc_wimfs_fd(inode, 0, NULL, &fd); fi->fh = (uintptr_t)fd; return ret; } @@ -1904,7 +1917,7 @@ wimfs_read(const char *path, char *buf, size_t size, { struct wimfs_fd *fd = (struct wimfs_fd*)(uintptr_t)fi->fh; ssize_t ret; - u64 res_size; + u64 stream_size; if (!fd) return -EBADF; @@ -1913,27 +1926,27 @@ wimfs_read(const char *path, char *buf, size_t size, return 0; if (fd->f_lte) - res_size = wim_resource_size(fd->f_lte); + stream_size = fd->f_lte->size; else - res_size = 0; + stream_size = 0; - if (offset > res_size) + if (offset > stream_size) return -EOVERFLOW; - size = min(size, res_size - offset); + size = min(size, stream_size - offset); if (size == 0) return 0; switch (fd->f_lte->resource_location) { case RESOURCE_IN_STAGING_FILE: - ret = full_pread(fd->staging_fd, buf, size, offset); - if (ret != size) + ret = raw_pread(&fd->staging_fd, buf, size, offset); + if (ret == -1) ret = -errno; break; case RESOURCE_IN_WIM: - if (read_partial_wim_resource_into_buf(fd->f_lte, size, - offset, buf)) - ret = -errno; + if (read_partial_wim_stream_into_buf(fd->f_lte, size, + offset, buf)) + ret = errno ? -errno : -EIO; else ret = size; break; @@ -2013,8 +2026,8 @@ wimfs_readlink(const char *path, char *buf, size_t buf_len) if (!inode_is_symlink(inode)) return -EINVAL; if (buf_len == 0) - return -ENAMETOOLONG; - ret = wim_inode_readlink(inode, buf, buf_len - 1); + return -EINVAL; + ret = wim_inode_readlink(inode, buf, buf_len - 1, NULL); if (ret >= 0) { wimlib_assert(ret <= buf_len - 1); buf[ret] = '\0'; @@ -2074,7 +2087,8 @@ wimfs_removexattr(const char *path, const char *name) static int wimfs_rename(const char *from, const char *to) { - return rename_wim_path(wimfs_get_WIMStruct(), from, to); + return rename_wim_path(wimfs_get_WIMStruct(), from, to, + WIMLIB_CASE_SENSITIVE); } /* Remove a directory */ @@ -2082,9 +2096,9 @@ static int wimfs_rmdir(const char *path) { struct wim_dentry *dentry; - WIMStruct *w = wimfs_get_WIMStruct(); + WIMStruct *wim = wimfs_get_WIMStruct(); - dentry = get_dentry(w, path); + dentry = get_dentry(wim, path, WIMLIB_CASE_SENSITIVE); if (!dentry) return -errno; @@ -2094,7 +2108,7 @@ wimfs_rmdir(const char *path) if (dentry_has_children(dentry)) return -ENOTEMPTY; - remove_dentry(dentry, w->lookup_table); + remove_dentry(dentry, wim->lookup_table); return 0; } @@ -2113,7 +2127,7 @@ wimfs_setxattr(const char *path, const char *name, if (!(ctx->mount_flags & WIMLIB_MOUNT_FLAG_STREAM_INTERFACE_XATTR)) return -ENOTSUP; - if (strlen(name) < 5 || memcmp(name, "user.", 5) != 0) + if (strlen(name) <= 5 || memcmp(name, "user.", 5) != 0) return -ENOATTR; name += 5; @@ -2180,8 +2194,8 @@ wimfs_truncate(const char *path, off_t size) struct wim_inode *inode; struct wimfs_context *ctx = wimfs_get_context(); - ret = lookup_resource(ctx->wim, path, get_lookup_flags(ctx), - &dentry, <e, &stream_idx); + ret = wim_pathname_to_stream(ctx->wim, path, get_lookup_flags(ctx), + &dentry, <e, &stream_idx); if (ret != 0) return ret; @@ -2189,12 +2203,12 @@ wimfs_truncate(const char *path, off_t size) if (lte == NULL && size == 0) return 0; - if (lte->resource_location == RESOURCE_IN_STAGING_FILE) { + if (lte != NULL && lte->resource_location == RESOURCE_IN_STAGING_FILE) { ret = truncate(lte->staging_file_name, size); if (ret) ret = -errno; else - lte->resource_entry.original_size = size; + lte->size = size; } else { /* File in WIM. Extract it to the staging directory, but only * the first @size bytes of it. */ @@ -2225,13 +2239,13 @@ wimfs_unlink(const char *path) u16 stream_idx; struct wimfs_context *ctx = wimfs_get_context(); - ret = lookup_resource(ctx->wim, path, get_lookup_flags(ctx), - &dentry, <e, &stream_idx); + ret = wim_pathname_to_stream(ctx->wim, path, get_lookup_flags(ctx), + &dentry, <e, &stream_idx); if (ret != 0) return ret; - if (stream_idx == 0) + if (inode_stream_name_nbytes(dentry->d_inode, stream_idx) == 0) remove_dentry(dentry, ctx->wim->lookup_table); else inode_remove_ads(dentry->d_inode, stream_idx - 1, @@ -2250,9 +2264,9 @@ wimfs_utimens(const char *path, const struct timespec tv[2]) { struct wim_dentry *dentry; struct wim_inode *inode; - WIMStruct *w = wimfs_get_WIMStruct(); + WIMStruct *wim = wimfs_get_WIMStruct(); - dentry = get_dentry(w, path); + dentry = get_dentry(wim, path, WIMLIB_CASE_SENSITIVE); if (!dentry) return -errno; inode = dentry->d_inode; @@ -2277,9 +2291,9 @@ wimfs_utime(const char *path, struct utimbuf *times) { struct wim_dentry *dentry; struct wim_inode *inode; - WIMStruct *w = wimfs_get_WIMStruct(); + WIMStruct *wim = wimfs_get_WIMStruct(); - dentry = get_dentry(w, path); + dentry = get_dentry(wim, path, WIMLIB_CASE_SENSITIVE); if (!dentry) return -errno; inode = dentry->d_inode; @@ -2305,20 +2319,19 @@ wimfs_write(const char *path, const char *buf, size_t size, wimlib_assert(fd->f_lte != NULL); wimlib_assert(fd->f_lte->staging_file_name != NULL); - wimlib_assert(fd->staging_fd != -1); + wimlib_assert(filedes_valid(&fd->staging_fd)); wimlib_assert(fd->f_inode != NULL); /* Write the data. */ - ret = full_pwrite(fd->staging_fd, buf, size, offset); - if (ret != size) + ret = raw_pwrite(&fd->staging_fd, buf, size, offset); + if (ret == -1) return -errno; /* Update file size */ - if (offset + size > fd->f_lte->resource_entry.original_size) { + if (offset + size > fd->f_lte->size) { DEBUG("Update file size %"PRIu64 " => %"PRIu64"", - fd->f_lte->resource_entry.original_size, - offset + size); - fd->f_lte->resource_entry.original_size = offset + size; + fd->f_lte->size, offset + size); + fd->f_lte->size = offset + size; } /* Update timestamps */ @@ -2380,12 +2393,10 @@ static struct fuse_operations wimfs_operations = { }; -/* Mounts an image from a WIM file. */ +/* API function documented in wimlib.h */ WIMLIBAPI int wimlib_mount_image(WIMStruct *wim, int image, const char *dir, - int mount_flags, WIMStruct **additional_swms, - unsigned num_additional_swms, - const char *staging_dir) + int mount_flags, const char *staging_dir) { int argc; char *argv[16]; @@ -2398,60 +2409,45 @@ wimlib_mount_image(WIMStruct *wim, int image, const char *dir, DEBUG("Mount: wim = %p, image = %d, dir = %s, flags = %d, ", wim, image, dir, mount_flags); - if (!wim || !dir) { - ret = WIMLIB_ERR_INVALID_PARAM; - goto out; - } - - ret = verify_swm_set(wim, additional_swms, num_additional_swms); - if (ret) - goto out; - - if ((mount_flags & WIMLIB_MOUNT_FLAG_READWRITE) && (wim->hdr.total_parts != 1)) { - ERROR("Cannot mount a split WIM read-write"); - ret = WIMLIB_ERR_SPLIT_UNSUPPORTED; - goto out; - } + if (!wim || !dir) + return WIMLIB_ERR_INVALID_PARAM; - if (num_additional_swms) - merge_lookup_tables(wim, additional_swms, num_additional_swms); + if (mount_flags & ~(WIMLIB_MOUNT_FLAG_READWRITE | + WIMLIB_MOUNT_FLAG_DEBUG | + WIMLIB_MOUNT_FLAG_STREAM_INTERFACE_NONE | + WIMLIB_MOUNT_FLAG_STREAM_INTERFACE_XATTR | + WIMLIB_MOUNT_FLAG_STREAM_INTERFACE_WINDOWS | + WIMLIB_MOUNT_FLAG_UNIX_DATA | + WIMLIB_MOUNT_FLAG_ALLOW_OTHER)) + return WIMLIB_ERR_INVALID_PARAM; if (mount_flags & WIMLIB_MOUNT_FLAG_READWRITE) { - ret = wim_run_full_verifications(wim); + ret = can_delete_from_wim(wim); if (ret) - goto out_restore_lookup_table; + return ret; } - ret = wim_checksum_unhashed_streams(wim); - if (ret) - goto out_restore_lookup_table; - ret = select_wim_image(wim, image); if (ret) - goto out_restore_lookup_table; + return ret; DEBUG("Selected image %d", image); imd = wim_get_current_image_metadata(wim); - if (imd->refcnt != 1) { - ERROR("Cannot mount image that was just exported with " - "wimlib_export_image()"); - ret = WIMLIB_ERR_INVALID_PARAM; - goto out_restore_lookup_table; - } - if (imd->modified) { - ERROR("Cannot mount image that was added " - "with wimlib_add_image()"); - ret = WIMLIB_ERR_INVALID_PARAM; - goto out_restore_lookup_table; + /* wimfs_read() only supports a limited number of stream + * locations, not including RESOURCE_IN_FILE_ON_DISK, + * RESOURCE_IN_NTFS_VOLUME, etc. that might appear if files were + * added to the WIM image. */ + ERROR("Cannot mount an image with newly added files!"); + return WIMLIB_ERR_INVALID_PARAM; } if (mount_flags & WIMLIB_MOUNT_FLAG_READWRITE) { - ret = lock_wim(wim, wim->in_fd); + ret = lock_wim(wim, wim->in_fd.fd); if (ret) - goto out_restore_lookup_table; + return ret; } /* Use default stream interface if one was not specified */ @@ -2468,7 +2464,6 @@ wimlib_mount_image(WIMStruct *wim, int image, const char *dir, ctx.default_uid = getuid(); ctx.default_gid = getgid(); wimlib_assert(list_empty(&imd->unhashed_streams)); - ctx.wim->lookup_table->unhashed_streams = &imd->unhashed_streams; if (mount_flags & WIMLIB_MOUNT_FLAG_STREAM_INTERFACE_WINDOWS) ctx.default_lookup_flags = LOOKUP_FLAG_ADS_OK; @@ -2481,16 +2476,17 @@ wimlib_mount_image(WIMStruct *wim, int image, const char *dir, DEBUG("Preparing arguments to fuse_main()"); dir_copy = STRDUP(dir); - if (!dir_copy) + if (!dir_copy) { + ret = WIMLIB_ERR_NOMEM; goto out_free_message_queue_names; + } argc = 0; - argv[argc++] = "imagex"; + argv[argc++] = "wimlib"; argv[argc++] = dir_copy; - /* disable multi-threaded operation for read-write mounts */ - if (mount_flags & WIMLIB_MOUNT_FLAG_READWRITE) - argv[argc++] = "-s"; + /* disable multi-threaded operation */ + argv[argc++] = "-s"; if (mount_flags & WIMLIB_MOUNT_FLAG_DEBUG) argv[argc++] = "-d"; @@ -2543,10 +2539,8 @@ wimlib_mount_image(WIMStruct *wim, int image, const char *dir, * assign inode numbers */ DEBUG("Resolving lookup table entries and assigning inode numbers"); ctx.next_ino = 1; - image_for_each_inode(inode, imd) { - inode_resolve_ltes(inode, wim->lookup_table); + image_for_each_inode(inode, imd) inode->i_ino = ctx.next_ino++; - } DEBUG("(next_ino = %"PRIu64")", ctx.next_ino); DEBUG("Calling fuse_main()"); @@ -2578,17 +2572,10 @@ out_unlock: wim->wim_locked = 0; out_free_message_queue_names: free_message_queue_names(&ctx); -out_restore_lookup_table: - if (num_additional_swms) - unmerge_lookup_table(wim); -out: return ret; } -/* - * Unmounts the WIM file that was previously mounted on @dir by using - * wimlib_mount_image(). - */ +/* API function documented in wimlib.h */ WIMLIBAPI int wimlib_unmount_image(const char *dir, int unmount_flags, wimlib_progress_func_t progress_func) @@ -2596,6 +2583,13 @@ wimlib_unmount_image(const char *dir, int unmount_flags, int ret; struct wimfs_context wimfs_ctx; + if (unmount_flags & ~(WIMLIB_UNMOUNT_FLAG_CHECK_INTEGRITY | + WIMLIB_UNMOUNT_FLAG_COMMIT | + WIMLIB_UNMOUNT_FLAG_REBUILD | + WIMLIB_UNMOUNT_FLAG_RECOMPRESS | + WIMLIB_UNMOUNT_FLAG_LAZY)) + return WIMLIB_ERR_INVALID_PARAM; + init_wimfs_context(&wimfs_ctx); ret = set_message_queue_names(&wimfs_ctx, dir); @@ -2661,9 +2655,7 @@ wimlib_unmount_image(const tchar *dir, int unmount_flags, WIMLIBAPI int wimlib_mount_image(WIMStruct *wim, int image, const tchar *dir, - int mount_flags, WIMStruct **additional_swms, - unsigned num_additional_swms, - const tchar *staging_dir) + int mount_flags, const tchar *staging_dir) { return mount_unsupported_error(); }