diff options
Diffstat (limited to 'extras')
| -rw-r--r-- | extras/Makemodule.am | 5 | ||||
| -rw-r--r-- | extras/list_files.c | 145 |
2 files changed, 149 insertions, 1 deletions
diff --git a/extras/Makemodule.am b/extras/Makemodule.am index 77d734e..b7882eb 100644 --- a/extras/Makemodule.am +++ b/extras/Makemodule.am @@ -4,4 +4,7 @@ mknastyfs_LDADD = libsquashfs.la mk42sqfs_SOURCES = extras/mk42sqfs.c mk42sqfs_LDADD = libsquashfs.la -noinst_PROGRAMS += mknastyfs mk42sqfs +list_files_SOURCES = extras/list_files.c +list_files_LDADD = libsquashfs.la + +noinst_PROGRAMS += mknastyfs mk42sqfs list_files diff --git a/extras/list_files.c b/extras/list_files.c new file mode 100644 index 0000000..3f6725a --- /dev/null +++ b/extras/list_files.c @@ -0,0 +1,145 @@ +#include "sqfs/compressor.h" +#include "sqfs/dir_reader.h" +#include "sqfs/id_table.h" +#include "sqfs/inode.h" +#include "sqfs/super.h" +#include "sqfs/io.h" + +#include <string.h> +#include <stdlib.h> +#include <errno.h> +#include <stdio.h> + +static void write_tree_dfs(const sqfs_tree_node_t *n) +{ + const sqfs_tree_node_t *p; + unsigned int mask, level; + int i; + + for (n = n->children; n != NULL; n = n->next) { + level = 0; + mask = 0; + + for (p = n->parent; p->parent != NULL; p = p->parent) { + if (p->next != NULL) + mask |= 1 << level; + ++level; + } + + for (i = level - 1; i >= 0; --i) + fputs(mask & (1 << i) ? "│ " : " ", stdout); + + fputs(n->next == NULL ? "└─ " : "├─ ", stdout); + fputs((const char *)n->name, stdout); + + if (n->inode->base.type == SQFS_INODE_SLINK) { + printf(" ⭢ %.*s", n->inode->data.slink.target_size, + n->inode->slink_target); + } else if (n->inode->base.type == SQFS_INODE_EXT_SLINK) { + printf(" ⭢ %.*s", n->inode->data.slink_ext.target_size, + n->inode->slink_target); + } + + fputc('\n', stdout); + write_tree_dfs(n); + } +} + +int main(int argc, char **argv) +{ + sqfs_compressor_config_t cfg; + sqfs_compressor_t *cmp; + sqfs_tree_node_t *root = NULL; + sqfs_id_table_t *idtbl; + sqfs_dir_reader_t *dr; + sqfs_file_t *file; + sqfs_super_t super; + int status = EXIT_FAILURE; + + /* open the SquashFS file we want to read */ + if (argc != 2) { + fputs("Usage: list_files <squashfs-file>\n", stderr); + return EXIT_FAILURE; + } + + file = sqfs_open_file(argv[1], SQFS_FILE_OPEN_READ_ONLY); + if (file == NULL) { + perror(argv[1]); + return EXIT_FAILURE; + } + + /* read the super block, create a compressor and + process the compressor options */ + if (sqfs_super_read(&super, file)) { + fprintf(stderr, "%s: error reading super block.\n", argv[1]); + goto out_fd; + } + + if (!sqfs_compressor_exists(super.compression_id)) { + fprintf(stderr, "%s: unknown compressor used.\n", argv[1]); + goto out_fd; + } + + sqfs_compressor_config_init(&cfg, super.compression_id, + super.block_size, + SQFS_COMP_FLAG_UNCOMPRESS); + + cmp = sqfs_compressor_create(&cfg); + if (cmp == NULL) { + fprintf(stderr, "%s: error creating compressor.\n", argv[1]); + goto out_fd; + } + + if (super.flags & SQFS_FLAG_COMPRESSOR_OPTIONS) { + if (cmp->read_options(cmp, file)) { + fprintf(stderr, + "%s: error reading compressor options.\n", + argv[1]); + goto out_cmp; + } + } + + /* Create and read the UID/GID mapping table */ + idtbl = sqfs_id_table_create(); + if (idtbl == NULL) { + fputs("Error creating ID table.\n", stderr); + goto out_cmp; + } + + if (sqfs_id_table_read(idtbl, file, &super, cmp)) { + fprintf(stderr, "%s: error loading ID table.\n", argv[1]); + goto out_id; + } + + /* create a directory reader and scan the entire directory hiearchy */ + dr = sqfs_dir_reader_create(&super, cmp, file); + if (dr == NULL) { + fprintf(stderr, "%s: error creating directory reader.\n", + argv[1]); + goto out_id; + } + + if (sqfs_dir_reader_get_full_hierarchy(dr, idtbl, NULL, 0, &root)) { + fprintf(stderr, "%s: error loading directory tree.\n", + argv[1]); + goto out; + } + + /* fancy print the hierarchy */ + printf("/\n"); + write_tree_dfs(root); + + /* cleanup */ + status = EXIT_SUCCESS; +out: + if (root != NULL) + sqfs_dir_tree_destroy(root); + sqfs_dir_reader_destroy(dr); +out_id: + sqfs_id_table_destroy(idtbl); +out_cmp: + cmp->destroy(cmp); +out_fd: + file->destroy(file); + return status; +} |