From 04aa1d971efb44eefa2290ed981c61842b7f62b7 Mon Sep 17 00:00:00 2001 From: David Oberhollenzer Date: Sat, 4 May 2019 21:02:09 +0200 Subject: Rename tools to not collide with squashfs-tools This commit changes the names of the tools to gensquashfs and rdsquashfs so they don't collide with the names used by the squashfs-tools package and the two can be installed side by side. Signed-off-by: David Oberhollenzer --- unpack/unsquashfs.c | 289 ---------------------------------------------------- 1 file changed, 289 deletions(-) delete mode 100644 unpack/unsquashfs.c (limited to 'unpack/unsquashfs.c') diff --git a/unpack/unsquashfs.c b/unpack/unsquashfs.c deleted file mode 100644 index 8ec1b94..0000000 --- a/unpack/unsquashfs.c +++ /dev/null @@ -1,289 +0,0 @@ -/* SPDX-License-Identifier: GPL-3.0-or-later */ -#include "unsquashfs.h" - -enum { - OP_NONE = 0, - OP_LS, - OP_CAT, - OP_UNPACK, -}; - -static struct option long_opts[] = { - { "list", required_argument, NULL, 'l' }, - { "cat", required_argument, NULL, 'c' }, - { "unpack-root", required_argument, NULL, 'u' }, - { "no-dev", no_argument, NULL, 'D' }, - { "no-sock", no_argument, NULL, 'S' }, - { "no-fifo", no_argument, NULL, 'F' }, - { "no-slink", no_argument, NULL, 'L' }, - { "no-empty-dir", no_argument, NULL, 'E' }, - { "chmod", no_argument, NULL, 'C' }, - { "chown", no_argument, NULL, 'O' }, - { "help", no_argument, NULL, 'h' }, - { "version", no_argument, NULL, 'V' }, -}; - -static const char *short_opts = "l:c:u:DSFLCOEhV"; - -static const char *help_string = -"Usage: %s [OPTIONS] \n" -"\n" -"View or extract the contents of a squashfs image.\n" -"\n" -"Possible options:\n" -" --list, -l Produce a directory listing for a given path in the\n" -" squashfs image.\n" -" --cat, -c If the specified path is a regular file in the,\n" -" image, dump its contents to stdout.\n" -" --unpack-root Unpack the contents of the filesystem into the\n" -" specified path.\n" -" --no-dev, -D Do not unpack device special files.\n" -" --no-sock, -S Do not unpack socket files.\n" -" --no-fifo, -F Do not unpack named pipes.\n" -" --no-slink, -L Do not unpack symbolic links.\n" -" --no-empty-dir, -E Do not unpack directories that would end up empty.\n" -" --chmod, -C Change permission flags of unpacked files to those\n" -" store in the squashfs image.\n" -" --chown, -O Change ownership of unpacked files to the UID/GID\n" -" set in the squashfs iamge.\n" -"\n" -" --help, -h Print help text and exit.\n" -" --version, -V Print version information and exit.\n" -"\n"; - -extern const char *__progname; - -static tree_node_t *find_node(tree_node_t *n, const char *path) -{ - const char *end; - size_t len; - - while (path != NULL && *path != '\0') { - if (!S_ISDIR(n->mode)) { - errno = ENOTDIR; - return NULL; - } - - end = strchrnul(path, '/'); - len = end - path; - - for (n = n->data.dir->children; n != NULL; n = n->next) { - if (strncmp(path, n->name, len) != 0) - continue; - if (n->name[len] != '\0') - continue; - break; - } - - if (n == NULL) { - errno = ENOENT; - return NULL; - } - - path = *end ? (end + 1) : end; - } - - return n; -} - -static char *get_path(char *old, const char *arg) -{ - char *path; - - free(old); - - path = strdup(arg); - if (path == NULL) { - perror("processing arguments"); - exit(EXIT_FAILURE); - } - - if (canonicalize_name(path)) { - fprintf(stderr, "Invalid path: %s\n", arg); - free(path); - exit(EXIT_FAILURE); - } - - return path; -} - -int main(int argc, char **argv) -{ - int i, fd, status = EXIT_FAILURE, op = OP_NONE, unpack_flags = 0; - const char *unpack_root = NULL; - frag_reader_t *frag = NULL; - char *cmdpath = NULL; - sqfs_super_t super; - compressor_t *cmp; - tree_node_t *n; - fstree_t fs; - - for (;;) { - i = getopt_long(argc, argv, short_opts, long_opts, NULL); - if (i == -1) - break; - - switch (i) { - case 'D': - unpack_flags |= UNPACK_NO_DEVICES; - break; - case 'S': - unpack_flags |= UNPACK_NO_SOCKETS; - break; - case 'F': - unpack_flags |= UNPACK_NO_FIFO; - break; - case 'L': - unpack_flags |= UNPACK_NO_SLINKS; - break; - case 'C': - unpack_flags |= UNPACK_CHMOD; - break; - case 'O': - unpack_flags |= UNPACK_CHOWN; - break; - case 'E': - unpack_flags |= UNPACK_NO_EMPTY; - break; - case 'c': - op = OP_CAT; - cmdpath = get_path(cmdpath, optarg); - break; - case 'l': - op = OP_LS; - cmdpath = get_path(cmdpath, optarg); - break; - case 'u': - op = OP_UNPACK; - unpack_root = optarg; - break; - case 'h': - printf(help_string, __progname); - status = EXIT_SUCCESS; - goto out_cmd; - case 'V': - print_version(); - status = EXIT_SUCCESS; - goto out_cmd; - default: - goto fail_arg; - } - } - - if (op == OP_NONE) { - fputs("No opteration specified\n", stderr); - goto fail_arg; - } - - if (optind >= argc) { - fputs("Missing image argument\n", stderr); - goto fail_arg; - } - - fd = open(argv[optind], O_RDONLY); - if (fd < 0) { - perror(argv[optind]); - goto out_cmd; - } - - if (sqfs_super_read(&super, fd)) - goto out_fd; - - if ((super.version_major != SQFS_VERSION_MAJOR) || - (super.version_minor != SQFS_VERSION_MINOR)) { - fprintf(stderr, - "The image uses squashfs version %d.%d\n" - "We currently only supports version %d.%d (sorry).\n", - super.version_major, super.version_minor, - SQFS_VERSION_MAJOR, SQFS_VERSION_MINOR); - goto out_fd; - } - - if (super.flags & SQFS_FLAG_COMPRESSOR_OPTIONS) { - fputs("Image has been built with compressor options.\n" - "This is not yet supported.\n", - stderr); - goto out_fd; - } - - if (!compressor_exists(super.compression_id)) { - fputs("Image uses a compressor that has not been built in\n", - stderr); - goto out_fd; - } - - cmp = compressor_create(super.compression_id, false, super.block_size); - if (cmp == NULL) - goto out_fd; - - if (read_fstree(&fs, fd, &super, cmp, unpack_flags)) - goto out_cmp; - - switch (op) { - case OP_LS: - n = find_node(fs.root, cmdpath); - if (n == NULL) { - perror(cmdpath); - goto out_fs; - } - - list_files(n); - break; - case OP_CAT: - n = find_node(fs.root, cmdpath); - if (n == NULL) { - perror(cmdpath); - goto out_fs; - } - - if (!S_ISREG(n->mode)) { - fprintf(stderr, "/%s: not a regular file\n", cmdpath); - goto out_fs; - } - - if (super.fragment_entry_count > 0 && - super.fragment_table_start < super.bytes_used && - !(super.flags & SQFS_FLAG_NO_FRAGMENTS)) { - frag = frag_reader_create(&super, fd, cmp); - if (frag == NULL) - goto out_fs; - } - - if (extract_file(n->data.file, cmp, super.block_size, - frag, fd, STDOUT_FILENO)) { - goto out_fs; - } - break; - case OP_UNPACK: - if (super.fragment_entry_count > 0 && - super.fragment_table_start < super.bytes_used && - !(super.flags & SQFS_FLAG_NO_FRAGMENTS)) { - frag = frag_reader_create(&super, fd, cmp); - if (frag == NULL) - goto out_fs; - } - - if (restore_fstree(unpack_root, fs.root, cmp, super.block_size, - frag, fd, unpack_flags)) { - goto out_fs; - } - break; - } - - status = EXIT_SUCCESS; -out_fs: - if (frag != NULL) - frag_reader_destroy(frag); - fstree_cleanup(&fs); -out_cmp: - cmp->destroy(cmp); -out_fd: - close(fd); -out_cmd: - free(cmdpath); - return status; -fail_arg: - fprintf(stderr, "Try `%s --help' for more information.\n", __progname); - free(cmdpath); - return EXIT_FAILURE; -} -- cgit v1.2.3