X-Git-Url: https://wimlib.net/git/?p=wimlib;a=blobdiff_plain;f=src%2Fextract_image.c;h=d637a10633410452e7b2372eb89bc90bb86bea57;hp=96c929453f152fcd09c763e31016c626b4a7a578;hb=9fb3aaca115429b0af2a623bf20bfceef74f047f;hpb=4016a9dba036f4d2eca0253c99370e6647a9ccb6 diff --git a/src/extract_image.c b/src/extract_image.c index 96c92945..d637a106 100644 --- a/src/extract_image.c +++ b/src/extract_image.c @@ -2,15 +2,10 @@ * extract_image.c * * Support for extracting WIM files. - * - * This code does NOT contain any filesystem-specific features. In particular, - * security information (i.e. file permissions) and alternate data streams are - * ignored, except possibly to read an alternate data stream that contains - * symbolic link data. */ /* - * Copyright (C) 2012 Eric Biggers + * Copyright (C) 2012, 2013 Eric Biggers * * This file is part of wimlib, a library for working with WIM files. * @@ -31,33 +26,43 @@ #include "config.h" #include + +#ifdef __WIN32__ +# include "win32.h" +#else +# ifdef HAVE_UTIME_H +# include +# endif +# include "timestamp.h" +# include +#endif + #include #include +#include #include #include -#include -#include - -#ifdef HAVE_UTIME_H -#include -#endif - #include #include "dentry.h" #include "lookup_table.h" -#include "timestamp.h" #include "wimlib_internal.h" #include "xml.h" #ifdef WITH_NTFS_3G -#include +# include #endif -static int extract_regular_file_linked(struct wim_dentry *dentry, - const char *output_path, - struct apply_args *args, - struct wim_lookup_table_entry *lte) +#ifdef HAVE_ALLOCA_H +# include +#endif + +#ifndef __WIN32__ +static int +extract_regular_file_linked(struct wim_dentry *dentry, + const mbchar *output_path, + struct apply_args *args, + struct wim_lookup_table_entry *lte) { /* This mode overrides the normal hard-link extraction and * instead either symlinks or hardlinks *all* identical files in @@ -75,12 +80,12 @@ static int extract_regular_file_linked(struct wim_dentry *dentry, int num_path_components; int num_output_dir_path_components; size_t extracted_file_len; - char *p; - const char *p2; + mbchar *p; + const mbchar *p2; size_t i; num_path_components = - get_num_path_components(dentry->full_path_utf8) - 1; + get_num_path_components(dentry->full_path) - 1; num_output_dir_path_components = get_num_path_components(args->target); @@ -90,7 +95,7 @@ static int extract_regular_file_linked(struct wim_dentry *dentry, } extracted_file_len = strlen(lte->extracted_file); - char buf[extracted_file_len + 3 * num_path_components + 1]; + mbchar buf[extracted_file_len + 3 * num_path_components + 1]; p = &buf[0]; for (i = 0; i < num_path_components; i++) { @@ -105,8 +110,7 @@ static int extract_regular_file_linked(struct wim_dentry *dentry, p2 = path_next_part(p2, NULL); strcpy(p, p2); if (symlink(buf, output_path) != 0) { - ERROR_WITH_ERRNO("Failed to symlink `%s' to " - "`%s'", + ERROR_WITH_ERRNO("Failed to symlink `%s' to `%s'", buf, lte->extracted_file); return WIMLIB_ERR_LINK; } @@ -114,8 +118,9 @@ static int extract_regular_file_linked(struct wim_dentry *dentry, return 0; } -static int symlink_apply_unix_data(const char *link, - const struct wimlib_unix_data *unix_data) +static int +symlink_apply_unix_data(const mbchar *link, + const struct wimlib_unix_data *unix_data) { if (lchown(link, unix_data->uid, unix_data->gid)) { if (errno == EPERM) { @@ -129,7 +134,8 @@ static int symlink_apply_unix_data(const char *link, return 0; } -static int fd_apply_unix_data(int fd, const struct wimlib_unix_data *unix_data) +static int +fd_apply_unix_data(int fd, const struct wimlib_unix_data *unix_data) { if (fchown(fd, unix_data->uid, unix_data->gid)) { if (errno == EPERM) { @@ -153,8 +159,8 @@ static int fd_apply_unix_data(int fd, const struct wimlib_unix_data *unix_data) return 0; } -static int dir_apply_unix_data(const char *dir, - const struct wimlib_unix_data *unix_data) +static int +dir_apply_unix_data(const mbchar *dir, const struct wimlib_unix_data *unix_data) { int dfd = open(dir, O_RDONLY); int ret; @@ -171,10 +177,11 @@ static int dir_apply_unix_data(const char *dir, return ret; } -static int extract_regular_file_unlinked(struct wim_dentry *dentry, - struct apply_args *args, - const char *output_path, - struct wim_lookup_table_entry *lte) +static int +extract_regular_file_unlinked(struct wim_dentry *dentry, + struct apply_args *args, + const mbchar *output_path, + struct wim_lookup_table_entry *lte) { /* Normal mode of extraction. Regular files and hard links are * extracted in the way that they appear in the WIM. */ @@ -261,9 +268,10 @@ out: return ret; } -static int extract_regular_file(struct wim_dentry *dentry, - struct apply_args *args, - const char *output_path) +static int +extract_regular_file(struct wim_dentry *dentry, + struct apply_args *args, + const mbchar *output_path) { struct wim_lookup_table_entry *lte; const struct wim_inode *inode = dentry->d_inode; @@ -284,18 +292,19 @@ static int extract_regular_file(struct wim_dentry *dentry, return extract_regular_file_unlinked(dentry, args, output_path, lte); } -static int extract_symlink(struct wim_dentry *dentry, - struct apply_args *args, - const char *output_path) +static int +extract_symlink(struct wim_dentry *dentry, + struct apply_args *args, + const mbchar *output_path) { - char target[4096]; + mbchar target[4096]; ssize_t ret = inode_readlink(dentry->d_inode, target, sizeof(target), args->w, 0); struct wim_lookup_table_entry *lte; if (ret <= 0) { ERROR("Could not read the symbolic link from dentry `%s'", - dentry->full_path_utf8); + dentry->full_path); return WIMLIB_ERR_INVALID_DENTRY; } ret = symlink(target, output_path); @@ -322,8 +331,11 @@ static int extract_symlink(struct wim_dentry *dentry, return 0; } -static int extract_directory(struct wim_dentry *dentry, - const char *output_path, bool is_root) +#endif /* !__WIN32__ */ + +static int +extract_directory(struct wim_dentry *dentry, + const mbchar *output_path, bool is_root) { int ret; struct stat stbuf; @@ -344,13 +356,15 @@ static int extract_directory(struct wim_dentry *dentry, return WIMLIB_ERR_STAT; } } - if (mkdir(output_path, S_IRWXU | S_IRGRP | S_IXGRP | - S_IROTH | S_IXOTH) != 0) { - ERROR_WITH_ERRNO("Cannot create directory `%s'", - output_path); + + if (mkdir(output_path, S_IRWXU | S_IRGRP | S_IXGRP | S_IROTH | S_IXOTH)) + { + ERROR_WITH_ERRNO("Cannot create directory `%s'", output_path); return WIMLIB_ERR_MKDIR; } dir_exists: + ret = 0; +#ifndef __WIN32__ if (dentry) { struct wimlib_unix_data unix_data; ret = inode_get_unix_data(dentry->d_inode, &unix_data, NULL); @@ -360,24 +374,18 @@ dir_exists: ret = 0; else ret = dir_apply_unix_data(output_path, &unix_data); - } else { - ret = 0; } +#endif return ret; } -/* Extracts a file, directory, or symbolic link from the WIM archive. */ -static int apply_dentry_normal(struct wim_dentry *dentry, void *arg) +#ifndef __WIN32__ +static int unix_do_apply_dentry(const mbchar *output_path, + size_t output_path_len, + struct wim_dentry *dentry, + struct apply_args *args) { - struct apply_args *args = arg; - struct wim_inode *inode = dentry->d_inode; - size_t len; - - len = strlen(args->target); - char output_path[len + dentry->full_path_utf8_len + 1]; - memcpy(output_path, args->target, len); - memcpy(output_path + len, dentry->full_path_utf8, dentry->full_path_utf8_len); - output_path[len + dentry->full_path_utf8_len] = '\0'; + const struct wim_inode *inode = dentry->d_inode; if (inode_is_symlink(inode)) return extract_symlink(dentry, args, output_path); @@ -389,52 +397,123 @@ static int apply_dentry_normal(struct wim_dentry *dentry, void *arg) return extract_regular_file(dentry, args, output_path); } -/* Apply timestamps to an extracted file or directory */ -static int apply_dentry_timestamps_normal(struct wim_dentry *dentry, void *arg) +static int +unix_do_apply_dentry_timestamps(const mbchar *output_path, + size_t output_path_len, + const struct wim_dentry *dentry, + struct apply_args *args) { - struct apply_args *args = arg; - size_t len = strlen(args->target); - char output_path[len + dentry->full_path_utf8_len + 1]; - const struct wim_inode *inode = dentry->d_inode; int ret; + const struct wim_inode *inode = dentry->d_inode; - memcpy(output_path, args->target, len); - memcpy(output_path + len, dentry->full_path_utf8, dentry->full_path_utf8_len); - output_path[len + dentry->full_path_utf8_len] = '\0'; - +#ifdef HAVE_UTIMENSAT /* Convert the WIM timestamps, which are accurate to 100 nanoseconds, - * into struct timeval's. */ - struct timeval tv[2]; - wim_timestamp_to_timeval(inode->i_last_access_time, &tv[0]); - wim_timestamp_to_timeval(inode->i_last_write_time, &tv[1]); + * into `struct timespec's for passing to utimensat(), which is accurate + * to 1 nanosecond. */ + + struct timespec ts[2]; + ts[0] = wim_timestamp_to_timespec(inode->i_last_access_time); + ts[1] = wim_timestamp_to_timespec(inode->i_last_write_time); + ret = utimensat(AT_FDCWD, output_path, ts, AT_SYMLINK_NOFOLLOW); + if (ret) + ret = errno; +#else + ret = ENOSYS; +#endif + + if (ret == ENOSYS) { + /* utimensat() not implemented or not available */ #ifdef HAVE_LUTIMES - ret = lutimes(output_path, tv); - #else - ret = -1; - errno = ENOSYS; + /* Convert the WIM timestamps, which are accurate to 100 + * nanoseconds, into `struct timeval's for passing to lutimes(), + * which is accurate to 1 microsecond. */ + struct timeval tv[2]; + tv[0] = wim_timestamp_to_timeval(inode->i_last_access_time); + tv[1] = wim_timestamp_to_timeval(inode->i_last_write_time); + ret = lutimes(output_path, tv); + if (ret) + ret = errno; #endif - if (ret != 0) { - #ifdef HAVE_UTIME - if (errno == ENOSYS) { - struct utimbuf buf; - buf.actime = wim_timestamp_to_unix(inode->i_last_access_time); - buf.modtime = wim_timestamp_to_unix(inode->i_last_write_time); - if (utime(output_path, &buf) == 0) - return 0; - } - #endif - if (errno != ENOSYS || args->num_lutimes_warnings < 10) { - /*WARNING_WITH_ERRNO("Failed to set timestamp on file `%s',*/ - /*output_path");*/ - args->num_lutimes_warnings++; - } + } + + if (ret == ENOSYS) { + /* utimensat() and lutimes() both not implemented or not + * available */ + #ifdef HAVE_UTIME + /* Convert the WIM timestamps, which are accurate to 100 + * nanoseconds, into a `struct utimbuf's for passing to + * utime(), which is accurate to 1 second. */ + struct utimbuf buf; + buf.actime = wim_timestamp_to_unix(inode->i_last_access_time); + buf.modtime = wim_timestamp_to_unix(inode->i_last_write_time); + ret = utime(output_path, &buf); + #endif + } + if (ret && args->num_utime_warnings < 10) { + WARNING_WITH_ERRNO("Failed to set timestamp on file `%s'", + output_path); + args->num_utime_warnings++; } return 0; } +#endif /* !__WIN32__ */ + +/* Extracts a file, directory, or symbolic link from the WIM archive. */ +static int +apply_dentry_normal(struct wim_dentry *dentry, void *arg) +{ + struct apply_args *args = arg; + size_t len; + mbchar *output_path; + + len = strlen(args->target); + if (dentry_is_root(dentry)) { + output_path = (mbchar*)args->target; + } else { + output_path = alloca(len + dentry->full_path_nbytes + 1); + memcpy(output_path, args->target, len); + memcpy(output_path + len, dentry->full_path, dentry->full_path_nbytes); + output_path[len + dentry->full_path_nbytes] = '\0'; + len += dentry->full_path_nbytes; + } +#ifdef __WIN32__ + return win32_do_apply_dentry(output_path, len, dentry, args); +#else + return unix_do_apply_dentry(output_path, len, dentry, args); +#endif +} + + +/* Apply timestamps to an extracted file or directory */ +static int +apply_dentry_timestamps_normal(struct wim_dentry *dentry, void *arg) +{ + struct apply_args *args = arg; + size_t len; + mbchar *output_path; + + len = strlen(args->target); + if (dentry_is_root(dentry)) { + output_path = (mbchar*)args->target; + } else { + output_path = alloca(len + dentry->full_path_nbytes + 1); + memcpy(output_path, args->target, len); + memcpy(output_path + len, dentry->full_path, dentry->full_path_nbytes); + output_path[len + dentry->full_path_nbytes] = '\0'; + len += dentry->full_path_nbytes; + } + +#ifdef __WIN32__ + return win32_do_apply_dentry_timestamps(output_path, len, dentry, args); +#else + return unix_do_apply_dentry_timestamps(output_path, len, dentry, args); +#endif +} /* Extract a dentry if it hasn't already been extracted, and either the dentry * has no streams or WIMLIB_EXTRACT_FLAG_NO_STREAMS is not specified. */ -static int maybe_apply_dentry(struct wim_dentry *dentry, void *arg) +static int +maybe_apply_dentry(struct wim_dentry *dentry, void *arg) { struct apply_args *args = arg; int ret; @@ -448,7 +527,7 @@ static int maybe_apply_dentry(struct wim_dentry *dentry, void *arg) if ((args->extract_flags & WIMLIB_EXTRACT_FLAG_VERBOSE) && args->progress_func) { - args->progress.extract.cur_path = dentry->full_path_utf8; + args->progress.extract.cur_path = dentry->full_path; args->progress_func(WIMLIB_PROGRESS_MSG_EXTRACT_DENTRY, &args->progress); } @@ -458,7 +537,8 @@ static int maybe_apply_dentry(struct wim_dentry *dentry, void *arg) return ret; } -static int cmp_streams_by_wim_position(const void *p1, const void *p2) +static int +cmp_streams_by_wim_position(const void *p1, const void *p2) { const struct wim_lookup_table_entry *lte1, *lte2; lte1 = *(const struct wim_lookup_table_entry**)p1; @@ -471,7 +551,8 @@ static int cmp_streams_by_wim_position(const void *p1, const void *p2) return 0; } -static int sort_stream_list_by_wim_position(struct list_head *stream_list) +static int +sort_stream_list_by_wim_position(struct list_head *stream_list) { struct list_head *cur; size_t num_streams; @@ -504,9 +585,10 @@ static int sort_stream_list_by_wim_position(struct list_head *stream_list) return 0; } -static void calculate_bytes_to_extract(struct list_head *stream_list, - int extract_flags, - union wimlib_progress_info *progress) +static void +calculate_bytes_to_extract(struct list_head *stream_list, + int extract_flags, + union wimlib_progress_info *progress) { struct wim_lookup_table_entry *lte; u64 total_bytes = 0; @@ -535,8 +617,9 @@ static void calculate_bytes_to_extract(struct list_head *stream_list, progress->extract.completed_bytes = 0; } -static void maybe_add_stream_for_extraction(struct wim_lookup_table_entry *lte, - struct list_head *stream_list) +static void +maybe_add_stream_for_extraction(struct wim_lookup_table_entry *lte, + struct list_head *stream_list) { if (++lte->out_refcnt == 1) { INIT_LIST_HEAD(<e->inode_list); @@ -544,9 +627,10 @@ static void maybe_add_stream_for_extraction(struct wim_lookup_table_entry *lte, } } -static void inode_find_streams_for_extraction(struct wim_inode *inode, - struct list_head *stream_list, - int extract_flags) +static void +inode_find_streams_for_extraction(struct wim_inode *inode, + struct list_head *stream_list, + int extract_flags) { struct wim_lookup_table_entry *lte; bool inode_added = false; @@ -560,7 +644,7 @@ static void inode_find_streams_for_extraction(struct wim_inode *inode, #ifdef WITH_NTFS_3G if (extract_flags & WIMLIB_EXTRACT_FLAG_NTFS) { for (unsigned i = 0; i < inode->i_num_ads; i++) { - if (inode->i_ads_entries[i].stream_name_len != 0) { + if (inode->i_ads_entries[i].stream_name_nbytes != 0) { lte = inode->i_ads_entries[i].lte; if (lte) { maybe_add_stream_for_extraction(lte, @@ -577,10 +661,11 @@ static void inode_find_streams_for_extraction(struct wim_inode *inode, #endif } -static void find_streams_for_extraction(struct hlist_head *inode_list, - struct list_head *stream_list, - struct wim_lookup_table *lookup_table, - int extract_flags) +static void +find_streams_for_extraction(struct hlist_head *inode_list, + struct list_head *stream_list, + struct wim_lookup_table *lookup_table, + int extract_flags) { struct wim_inode *inode; struct hlist_node *cur; @@ -615,10 +700,11 @@ static const struct apply_operations ntfs_apply_operations = { }; #endif -static int apply_stream_list(struct list_head *stream_list, - struct apply_args *args, - const struct apply_operations *ops, - wimlib_progress_func_t progress_func) +static int +apply_stream_list(struct list_head *stream_list, + struct apply_args *args, + const struct apply_operations *ops, + wimlib_progress_func_t progress_func) { uint64_t bytes_per_progress = args->progress.extract.total_bytes / 100; uint64_t next_progress = bytes_per_progress; @@ -670,9 +756,10 @@ static int apply_stream_list(struct list_head *stream_list, /* Extracts the image @image from the WIM @w to the directory or NTFS volume * @target. */ -static int extract_single_image(WIMStruct *w, int image, - const char *target, int extract_flags, - wimlib_progress_func_t progress_func) +static int +extract_single_image(WIMStruct *w, int image, + const mbchar *target, int extract_flags, + wimlib_progress_func_t progress_func) { int ret; struct list_head stream_list; @@ -681,12 +768,12 @@ static int extract_single_image(WIMStruct *w, int image, struct apply_args args; const struct apply_operations *ops; - args.w = w; - args.target = target; - args.extract_flags = extract_flags; - args.num_lutimes_warnings = 0; - args.stream_list = &stream_list; - args.progress_func = progress_func; + args.w = w; + args.target = target; + args.extract_flags = extract_flags; + args.num_utime_warnings = 0; + args.stream_list = &stream_list; + args.progress_func = progress_func; if (progress_func) { args.progress.extract.wimfile_name = w->filename; @@ -794,16 +881,17 @@ out: /* Extracts all images from the WIM to the directory @target, with the images * placed in subdirectories named by their image names. */ -static int extract_all_images(WIMStruct *w, const char *target, - int extract_flags, - wimlib_progress_func_t progress_func) +static int +extract_all_images(WIMStruct *w, const mbchar *target, + int extract_flags, + wimlib_progress_func_t progress_func) { size_t image_name_max_len = max(xml_get_max_image_name_len(w), 20); size_t output_path_len = strlen(target); - char buf[output_path_len + 1 + image_name_max_len + 1]; + mbchar buf[output_path_len + 1 + image_name_max_len + 1]; int ret; int image; - const char *image_name; + const utf8char *image_name; ret = extract_directory(NULL, target, true); if (ret != 0) @@ -813,10 +901,15 @@ static int extract_all_images(WIMStruct *w, const char *target, buf[output_path_len] = '/'; for (image = 1; image <= w->hdr.image_count; image++) { image_name = wimlib_get_image_name(w, image); - if (image_name && *image_name) { + if (image_name && *image_name && + (wimlib_mbs_is_utf8 || !utf8_str_contains_nonascii_chars(image_name)) + && strchr(image_name, '/') == NULL) + { strcpy(buf + output_path_len + 1, image_name); } else { - /* Image name is empty. Use image number instead */ + /* Image name is empty, or may not be representable in + * the current locale, or contains path separators. Use + * the image number instead. */ sprintf(buf + output_path_len + 1, "%d", image); } ret = extract_single_image(w, image, buf, extract_flags, @@ -849,6 +942,17 @@ WIMLIBAPI int wimlib_extract_image(WIMStruct *w, == (WIMLIB_EXTRACT_FLAG_SYMLINK | WIMLIB_EXTRACT_FLAG_HARDLINK)) return WIMLIB_ERR_INVALID_PARAM; +#ifdef __WIN32__ + if (extract_flags & WIMLIB_EXTRACT_FLAG_UNIX_DATA) { + ERROR("Extracting UNIX data is not supported on Windows"); + return WIMLIB_ERR_INVALID_PARAM; + } + if (extract_flags & (WIMLIB_EXTRACT_FLAG_SYMLINK | WIMLIB_EXTRACT_FLAG_HARDLINK)) { + ERROR("Linked extraction modes are not supported on Windows"); + return WIMLIB_ERR_INVALID_PARAM; + } +#endif + if (extract_flags & WIMLIB_EXTRACT_FLAG_NTFS) { #ifdef WITH_NTFS_3G if ((extract_flags & (WIMLIB_EXTRACT_FLAG_SYMLINK | WIMLIB_EXTRACT_FLAG_HARDLINK))) {