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authorDavid Oberhollenzer <david.oberhollenzer@sigma-star.at>2020-04-27 11:59:02 +0200
committerDavid Oberhollenzer <david.oberhollenzer@sigma-star.at>2020-04-27 11:59:02 +0200
commit20b0d509f67dea802706cd6b80b5e20d14988931 (patch)
tree3a87ea358b1206f6823777693d109896d6908283 /bin/rdsquashfs/rdsquashfs.c
parent9e332a2d3eddcc262476ac263e03df021b3c44b4 (diff)
Cleanup directory structure of the binary programs
Instead of having the binary programs in randomly named subdirectories, move all of them to a "bin" subdirectory, similar to the utility libraries that have subdirectories within "lib" and give the subdirectories the propper names (e.g. have gensquashfs source in a directory *actually* named "gensquashfs"). Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
Diffstat (limited to 'bin/rdsquashfs/rdsquashfs.c')
-rw-r--r--bin/rdsquashfs/rdsquashfs.c175
1 files changed, 175 insertions, 0 deletions
diff --git a/bin/rdsquashfs/rdsquashfs.c b/bin/rdsquashfs/rdsquashfs.c
new file mode 100644
index 0000000..fa2bbb4
--- /dev/null
+++ b/bin/rdsquashfs/rdsquashfs.c
@@ -0,0 +1,175 @@
+/* SPDX-License-Identifier: GPL-3.0-or-later */
+/*
+ * rdsquashfs.c
+ *
+ * Copyright (C) 2019 David Oberhollenzer <goliath@infraroot.at>
+ */
+#include "rdsquashfs.h"
+
+int main(int argc, char **argv)
+{
+ sqfs_xattr_reader_t *xattr = NULL;
+ sqfs_compressor_config_t cfg;
+ int status = EXIT_FAILURE;
+ sqfs_data_reader_t *data;
+ sqfs_dir_reader_t *dirrd;
+ sqfs_compressor_t *cmp;
+ sqfs_id_table_t *idtbl;
+ sqfs_tree_node_t *n;
+ sqfs_super_t super;
+ sqfs_file_t *file;
+ options_t opt;
+ int ret;
+
+ process_command_line(&opt, argc, argv);
+
+ file = sqfs_open_file(opt.image_name, SQFS_FILE_OPEN_READ_ONLY);
+ if (file == NULL) {
+ perror(opt.image_name);
+ goto out_cmd;
+ }
+
+ ret = sqfs_super_read(&super, file);
+ if (ret) {
+ sqfs_perror(opt.image_name, "reading super block", ret);
+ goto out_file;
+ }
+
+ sqfs_compressor_config_init(&cfg, super.compression_id,
+ super.block_size,
+ SQFS_COMP_FLAG_UNCOMPRESS);
+
+ ret = sqfs_compressor_create(&cfg, &cmp);
+
+#ifdef WITH_LZO
+ if (super.compression_id == SQFS_COMP_LZO && ret != 0)
+ ret = lzo_compressor_create(&cfg, &cmp);
+#endif
+
+ if (ret != 0) {
+ sqfs_perror(opt.image_name, "creating compressor", ret);
+ goto out_file;
+ }
+
+ if (!(super.flags & SQFS_FLAG_NO_XATTRS)) {
+ xattr = sqfs_xattr_reader_create(0);
+ if (xattr == NULL) {
+ sqfs_perror(opt.image_name, "creating xattr reader",
+ SQFS_ERROR_ALLOC);
+ goto out_cmp;
+ }
+
+ ret = sqfs_xattr_reader_load(xattr, &super, file, cmp);
+ if (ret) {
+ sqfs_perror(opt.image_name, "loading xattr table",
+ ret);
+ goto out_xr;
+ }
+ }
+
+ idtbl = sqfs_id_table_create(0);
+ if (idtbl == NULL) {
+ sqfs_perror(opt.image_name, "creating ID table",
+ SQFS_ERROR_ALLOC);
+ goto out_xr;
+ }
+
+ ret = sqfs_id_table_read(idtbl, file, &super, cmp);
+ if (ret) {
+ sqfs_perror(opt.image_name, "loading ID table", ret);
+ goto out_id;
+ }
+
+ dirrd = sqfs_dir_reader_create(&super, cmp, file);
+ if (dirrd == NULL) {
+ sqfs_perror(opt.image_name, "creating dir reader",
+ SQFS_ERROR_ALLOC);
+ goto out_id;
+ }
+
+ data = sqfs_data_reader_create(file, super.block_size, cmp);
+ if (data == NULL) {
+ sqfs_perror(opt.image_name, "creating data reader",
+ SQFS_ERROR_ALLOC);
+ goto out_dr;
+ }
+
+ ret = sqfs_data_reader_load_fragment_table(data, &super);
+ if (ret) {
+ sqfs_perror(opt.image_name, "loading fragment table", ret);
+ goto out_data;
+ }
+
+ ret = sqfs_dir_reader_get_full_hierarchy(dirrd, idtbl, opt.cmdpath,
+ opt.rdtree_flags, &n);
+ if (ret) {
+ sqfs_perror(opt.image_name, "reading filesystem tree", ret);
+ goto out_data;
+ }
+
+ switch (opt.op) {
+ case OP_LS:
+ list_files(n);
+ break;
+ case OP_CAT:
+ if (!S_ISREG(n->inode->base.mode)) {
+ fprintf(stderr, "/%s: not a regular file\n",
+ opt.cmdpath);
+ goto out;
+ }
+
+ if (sqfs_data_reader_dump(opt.cmdpath, data, n->inode,
+ stdout, super.block_size, false)) {
+ goto out;
+ }
+ break;
+ case OP_UNPACK:
+ if (opt.unpack_root != NULL) {
+ if (mkdir_p(opt.unpack_root))
+ goto out;
+
+ if (chdir(opt.unpack_root)) {
+ perror(opt.unpack_root);
+ goto out;
+ }
+ }
+
+ if (restore_fstree(n, opt.flags))
+ goto out;
+
+ if (fill_unpacked_files(super.block_size, n, data, opt.flags))
+ goto out;
+
+ if (update_tree_attribs(xattr, n, opt.flags))
+ goto out;
+ break;
+ case OP_DESCRIBE:
+ if (describe_tree(n, opt.unpack_root))
+ goto out;
+ break;
+ case OP_RDATTR:
+ if (dump_xattrs(xattr, n->inode))
+ goto out;
+ break;
+ }
+
+ status = EXIT_SUCCESS;
+out:
+ sqfs_dir_tree_destroy(n);
+out_data:
+ sqfs_destroy(data);
+out_dr:
+ sqfs_destroy(dirrd);
+out_id:
+ sqfs_destroy(idtbl);
+out_xr:
+ if (xattr != NULL)
+ sqfs_destroy(xattr);
+out_cmp:
+ sqfs_destroy(cmp);
+out_file:
+ sqfs_destroy(file);
+out_cmd:
+ free(opt.cmdpath);
+ return status;
+}