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-rw-r--r--extras/Makemodule.am5
-rw-r--r--extras/browse.c6
-rw-r--r--extras/extract_one.c184
-rw-r--r--extras/list_files.c6
-rw-r--r--extras/mk42sqfs.c6
-rw-r--r--extras/mknastyfs.c6
6 files changed, 212 insertions, 1 deletions
diff --git a/extras/Makemodule.am b/extras/Makemodule.am
index d3b80f2..9ebe037 100644
--- a/extras/Makemodule.am
+++ b/extras/Makemodule.am
@@ -7,6 +7,9 @@ mk42sqfs_LDADD = libsquashfs.la
list_files_SOURCES = extras/list_files.c
list_files_LDADD = libsquashfs.la
+extract_one_SOURCES = extras/extract_one.c
+extract_one_LDADD = libsquashfs.la
+
if WITH_READLINE
sqfsbrowse_SOURCES = extras/browse.c
sqfsbrowse_CFLAGS = $(AM_CFLAGS) $(READLINE_CFLAGS)
@@ -15,4 +18,4 @@ sqfsbrowse_LDADD = libsquashfs.la $(READLINE_LIBS)
noinst_PROGRAMS += sqfsbrowse
endif
-noinst_PROGRAMS += mknastyfs mk42sqfs list_files
+noinst_PROGRAMS += mknastyfs mk42sqfs list_files extract_one
diff --git a/extras/browse.c b/extras/browse.c
index 6d03312..fe5bfd8 100644
--- a/extras/browse.c
+++ b/extras/browse.c
@@ -1,3 +1,9 @@
+/* SPDX-License-Identifier: 0BSD */
+/*
+ * browse.c
+ *
+ * Copyright (C) 2020 David Oberhollenzer <goliath@infraroot.at>
+ */
#include "sqfs/data_reader.h"
#include "sqfs/compressor.h"
#include "sqfs/dir_reader.h"
diff --git a/extras/extract_one.c b/extras/extract_one.c
new file mode 100644
index 0000000..4f5b547
--- /dev/null
+++ b/extras/extract_one.c
@@ -0,0 +1,184 @@
+/* SPDX-License-Identifier: 0BSD */
+/*
+ * extract_one.c
+ *
+ * Copyright (C) 2021 Luca Boccassi <luca.boccassi@microsoft.com>
+ */
+
+#include "sqfs/compressor.h"
+#include "sqfs/data_reader.h"
+#include "sqfs/dir_reader.h"
+#include "sqfs/error.h"
+#include "sqfs/id_table.h"
+#include "sqfs/io.h"
+#include "sqfs/inode.h"
+#include "sqfs/super.h"
+#include "sqfs/xattr_reader.h"
+
+#include <string.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <stdio.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <unistd.h>
+
+int main(int argc, char **argv)
+{
+ sqfs_xattr_reader_t *xattr = NULL;
+ sqfs_data_reader_t *data = NULL;
+ sqfs_dir_reader_t *dirrd = NULL;
+ sqfs_compressor_t *cmp = NULL;
+ sqfs_id_table_t *idtbl = NULL;
+ sqfs_tree_node_t *n = NULL;
+ sqfs_file_t *file = NULL;
+ sqfs_u8 *p, *output = NULL;
+ sqfs_compressor_config_t cfg;
+ sqfs_super_t super;
+ sqfs_u64 file_size;
+ int status = EXIT_FAILURE, ret;
+
+ if (argc != 3) {
+ fputs("Usage: extract_one <squashfs-file> <source-file-path>\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;
+ }
+
+ ret = sqfs_super_read(&super, file);
+ if (ret) {
+ fprintf(stderr, "%s: error reading super block.\n", argv[1]);
+ goto out_file;
+ }
+
+ sqfs_compressor_config_init(&cfg, super.compression_id,
+ super.block_size,
+ SQFS_COMP_FLAG_UNCOMPRESS);
+
+ ret = sqfs_compressor_create(&cfg, &cmp);
+ if (ret != 0) {
+ fprintf(stderr, "%s: error creating compressor: %d.\n", argv[1], ret);
+ goto out_file;
+ }
+
+ if (!(super.flags & SQFS_FLAG_NO_XATTRS)) {
+ xattr = sqfs_xattr_reader_create(0);
+ if (xattr == NULL) {
+ fprintf(stderr, "%s: error creating xattr reader: %d.\n", argv[1], SQFS_ERROR_ALLOC);
+ goto out_cmp;
+ }
+
+ ret = sqfs_xattr_reader_load(xattr, &super, file, cmp);
+ if (ret) {
+ fprintf(stderr, "%s: error loading xattr reader: %d.\n", argv[1], ret);
+ goto out_xattr;
+ }
+ }
+
+ idtbl = sqfs_id_table_create(0);
+ if (idtbl == NULL) {
+ fprintf(stderr, "%s: error creating ID table: %d.\n", argv[1], ret);
+ goto out_xattr;
+ }
+
+ ret = sqfs_id_table_read(idtbl, file, &super, cmp);
+ if (ret) {
+ fprintf(stderr, "%s: error loading ID table: %d.\n", argv[1], ret);
+ goto out_idtbl;
+ }
+
+ dirrd = sqfs_dir_reader_create(&super, cmp, file, 0);
+ if (dirrd == NULL) {
+ fprintf(stderr, "%s: error creating dir reader: %d.\n", argv[1], SQFS_ERROR_ALLOC);
+ goto out_idtbl;
+ }
+
+ data = sqfs_data_reader_create(file, super.block_size, cmp, 0);
+ if (data == NULL) {
+ fprintf(stderr, "%s: error creating data reader: %d.\n", argv[1], SQFS_ERROR_ALLOC);
+ goto out_dirrd;
+ }
+
+ ret = sqfs_data_reader_load_fragment_table(data, &super);
+ if (ret) {
+ fprintf(stderr, "%s: error loading fragment table: %d.\n", argv[1], ret);
+ goto out_data;
+ }
+
+ ret = sqfs_dir_reader_get_full_hierarchy(dirrd, idtbl, argv[2], 0, &n);
+ if (ret) {
+ fprintf(stderr, "%s: error reading filesystem hierarchy: %d.\n", argv[1], ret);
+ goto out_data;
+ }
+
+ if (!S_ISREG(n->inode->base.mode)) {
+ fprintf(stderr, "/%s is not a file\n", argv[2]);
+ goto out_tree;
+ }
+
+ sqfs_inode_get_file_size(n->inode, &file_size);
+
+ output = p = malloc(file_size);
+ if (output == NULL) {
+ fprintf(stderr, "malloc failed: %d\n", errno);
+ goto out_tree;
+ }
+
+ for (size_t i = 0; i < sqfs_inode_get_file_block_count(n->inode); ++i) {
+ size_t chunk_size, read = (file_size < super.block_size) ? file_size : super.block_size;
+ sqfs_u8 *chunk;
+
+ ret = sqfs_data_reader_get_block(data, n->inode, i, &chunk_size, &chunk);
+ if (ret) {
+ fprintf(stderr, "reading data block: %d\n", ret);
+ goto out_tree;
+ }
+
+ memcpy(p, chunk, chunk_size);
+ p += chunk_size;
+ free(chunk);
+
+ file_size -= read;
+ }
+
+ if (file_size > 0) {
+ size_t chunk_size;
+ sqfs_u8 *chunk;
+
+ ret = sqfs_data_reader_get_fragment(data, n->inode, &chunk_size, &chunk);
+ if (ret) {
+ fprintf(stderr, "reading fragment block: %d\n", ret);
+ goto out_tree;
+ }
+
+ memcpy(p, chunk, chunk_size);
+ free(chunk);
+ }
+
+ /* for example simplicity, assume this is a text file */
+ fprintf(stdout, "%s\n", (char *)output);
+
+ status = EXIT_SUCCESS;
+out_tree:
+ sqfs_dir_tree_destroy(n);
+out_data:
+ sqfs_destroy(data);
+out_dirrd:
+ sqfs_destroy(dirrd);
+out_idtbl:
+ sqfs_destroy(idtbl);
+out_xattr:
+ if (xattr != NULL)
+ sqfs_destroy(xattr);
+out_cmp:
+ sqfs_destroy(cmp);
+out_file:
+ sqfs_destroy(file);
+ free(output);
+
+ return status;
+}
diff --git a/extras/list_files.c b/extras/list_files.c
index 5f0742d..e368f2a 100644
--- a/extras/list_files.c
+++ b/extras/list_files.c
@@ -1,3 +1,9 @@
+/* SPDX-License-Identifier: 0BSD */
+/*
+ * list_files.c
+ *
+ * Copyright (C) 2020 David Oberhollenzer <goliath@infraroot.at>
+ */
#include "sqfs/compressor.h"
#include "sqfs/dir_reader.h"
#include "sqfs/id_table.h"
diff --git a/extras/mk42sqfs.c b/extras/mk42sqfs.c
index 08dffe6..d437ce7 100644
--- a/extras/mk42sqfs.c
+++ b/extras/mk42sqfs.c
@@ -1,3 +1,9 @@
+/* SPDX-License-Identifier: 0BSD */
+/*
+ * mk42sqfs.c
+ *
+ * Copyright (C) 2020 David Oberhollenzer <goliath@infraroot.at>
+ */
#include "sqfs/meta_writer.h"
#include "sqfs/dir_writer.h"
#include "sqfs/compressor.h"
diff --git a/extras/mknastyfs.c b/extras/mknastyfs.c
index 20074d3..ecc6b8a 100644
--- a/extras/mknastyfs.c
+++ b/extras/mknastyfs.c
@@ -1,3 +1,9 @@
+/* SPDX-License-Identifier: 0BSD */
+/*
+ * mknastyfs.c
+ *
+ * Copyright (C) 2020 David Oberhollenzer <goliath@infraroot.at>
+ */
#include "sqfs/meta_writer.h"
#include "sqfs/dir_writer.h"
#include "sqfs/compressor.h"
generated by cgit v1.2.3 (git 2.39.1) at 2025-10-31 10:55:27 +0000