diff options
Diffstat (limited to 'unpack/unsquashfs.c')
| -rw-r--r-- | unpack/unsquashfs.c | 37 |
1 files changed, 30 insertions, 7 deletions
diff --git a/unpack/unsquashfs.c b/unpack/unsquashfs.c index 90a7583..178def4 100644 --- a/unpack/unsquashfs.c +++ b/unpack/unsquashfs.c @@ -5,16 +5,18 @@ 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' }, { "help", no_argument, NULL, 'h' }, { "version", no_argument, NULL, 'V' }, }; -static const char *short_opts = "l:hV"; +static const char *short_opts = "l:c:u:hV"; static const char *help_string = "Usage: %s [OPTIONS] <squashfs-file>\n" @@ -22,12 +24,14 @@ static const char *help_string = "View or extract the contents of a squashfs image.\n" "\n" "Possible options:\n" -" --list, -l <path> Produce a directory listing for a given path in the\n" -" squashfs image.\n" -" --cat, -c <path> If the specified path is a regular file in the image,\n" -" dump its contents to stdout.\n" -" --help, -h Print help text and exit.\n" -" --version, -V Print version information and exit.\n" +" --list, -l <path> Produce a directory listing for a given path in the\n" +" squashfs image.\n" +" --cat, -c <path> If the specified path is a regular file in the,\n" +" image, dump its contents to stdout.\n" +" --unpack-root <path> Unpack the contents of the filesystem into the\n" +" specified path\n" +" --help, -h Print help text and exit.\n" +" --version, -V Print version information and exit.\n" "\n"; extern const char *__progname; @@ -89,6 +93,7 @@ static char *get_path(char *old, const char *arg) int main(int argc, char **argv) { int i, fd, status = EXIT_FAILURE, op = OP_NONE; + const char *unpack_root = NULL; frag_reader_t *frag = NULL; char *cmdpath = NULL; sqfs_super_t super; @@ -110,6 +115,10 @@ int main(int argc, char **argv) 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; @@ -207,6 +216,20 @@ int main(int argc, char **argv) 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)) { + goto out_fs; + } + break; } status = EXIT_SUCCESS; |