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-rw-r--r--bin/sqfs2tar/Makemodule.am1
-rw-r--r--bin/sqfs2tar/sqfs2tar.h4
-rw-r--r--bin/sqfs2tar/write_tree.c110
-rw-r--r--bin/sqfs2tar/xattr.c91
4 files changed, 113 insertions, 93 deletions
diff --git a/bin/sqfs2tar/Makemodule.am b/bin/sqfs2tar/Makemodule.am
index 3c5662d..f8d95cc 100644
--- a/bin/sqfs2tar/Makemodule.am
+++ b/bin/sqfs2tar/Makemodule.am
@@ -1,5 +1,6 @@
sqfs2tar_SOURCES = bin/sqfs2tar/sqfs2tar.c bin/sqfs2tar/sqfs2tar.h
sqfs2tar_SOURCES += bin/sqfs2tar/options.c bin/sqfs2tar/write_tree.c
+sqfs2tar_SOURCES += bin/sqfs2tar/xattr.c
sqfs2tar_CFLAGS = $(AM_CFLAGS) $(PTHREAD_CFLAGS)
sqfs2tar_LDADD = libcommon.a libutil.a libsquashfs.la libtar.a libcompat.a
sqfs2tar_LDADD += libfstree.a $(LZO_LIBS) $(PTHREAD_LIBS)
diff --git a/bin/sqfs2tar/sqfs2tar.h b/bin/sqfs2tar/sqfs2tar.h
index afd267e..47d82ef 100644
--- a/bin/sqfs2tar/sqfs2tar.h
+++ b/bin/sqfs2tar/sqfs2tar.h
@@ -42,6 +42,10 @@ extern FILE *out_file;
char *assemble_tar_path(char *name, bool is_dir);
+/* xattr.c */
+int get_xattrs(const char *name, const sqfs_inode_generic_t *inode,
+ tar_xattr_t **out);
+
/* write_tree.c */
int write_tree_dfs(const sqfs_tree_node_t *n);
diff --git a/bin/sqfs2tar/write_tree.c b/bin/sqfs2tar/write_tree.c
index 545adc1..a84c20e 100644
--- a/bin/sqfs2tar/write_tree.c
+++ b/bin/sqfs2tar/write_tree.c
@@ -8,89 +8,25 @@
static unsigned int record_counter;
-static int get_xattrs(const char *name, const sqfs_inode_generic_t *inode,
- tar_xattr_t **out)
+static sqfs_hard_link_t *find_hard_link(const char *name, sqfs_u32 inum)
{
- tar_xattr_t *list = NULL, *ent;
- sqfs_xattr_value_t *value;
- sqfs_xattr_entry_t *key;
- sqfs_xattr_id_t desc;
- sqfs_u32 index;
- size_t i;
- int ret;
-
- if (xr == NULL)
- return 0;
-
- sqfs_inode_get_xattr_index(inode, &index);
-
- if (index == 0xFFFFFFFF)
- return 0;
-
- ret = sqfs_xattr_reader_get_desc(xr, index, &desc);
- if (ret) {
- sqfs_perror(name, "resolving xattr index", ret);
- return -1;
- }
-
- ret = sqfs_xattr_reader_seek_kv(xr, &desc);
- if (ret) {
- sqfs_perror(name, "locating xattr key-value pairs", ret);
- return -1;
- }
-
- for (i = 0; i < desc.count; ++i) {
- ret = sqfs_xattr_reader_read_key(xr, &key);
- if (ret) {
- sqfs_perror(name, "reading xattr key", ret);
- goto fail;
- }
-
- ret = sqfs_xattr_reader_read_value(xr, key, &value);
- if (ret) {
- sqfs_perror(name, "reading xattr value", ret);
- free(key);
- goto fail;
- }
+ sqfs_hard_link_t *lnk = NULL;
- ent = calloc(1, sizeof(*ent) + strlen((const char *)key->key) +
- value->size + 2);
- if (ent == NULL) {
- perror("creating xattr entry");
- free(key);
- free(value);
- goto fail;
+ for (lnk = links; lnk != NULL; lnk = lnk->next) {
+ if (lnk->inode_number == inum) {
+ if (strcmp(name, lnk->target) == 0)
+ lnk = NULL;
+ break;
}
-
- ent->key = ent->data;
- strcpy(ent->key, (const char *)key->key);
-
- ent->value = (sqfs_u8 *)ent->key + strlen(ent->key) + 1;
- memcpy(ent->value, value->value, value->size + 1);
-
- ent->value_len = value->size;
- ent->next = list;
- list = ent;
-
- free(key);
- free(value);
}
- *out = list;
- return 0;
-fail:
- while (list != NULL) {
- ent = list;
- list = list->next;
- free(ent);
- }
- return -1;
+ return lnk;
}
int write_tree_dfs(const sqfs_tree_node_t *n)
{
- tar_xattr_t *xattr = NULL, *xit;
sqfs_hard_link_t *lnk = NULL;
+ tar_xattr_t *xattr = NULL;
char *name, *target;
struct stat sb;
size_t len;
@@ -133,24 +69,17 @@ int write_tree_dfs(const sqfs_tree_node_t *n)
if (canonicalize_name(name))
goto out_skip;
- for (lnk = links; lnk != NULL; lnk = lnk->next) {
- if (lnk->inode_number == n->inode->base.inode_number) {
- if (strcmp(name, lnk->target) == 0)
- lnk = NULL;
- break;
- }
- }
-
name = assemble_tar_path(name, S_ISDIR(sb.st_mode));
if (name == NULL)
return -1;
- }
- if (lnk != NULL) {
- ret = write_hard_link(out_file, &sb, name, lnk->target,
- record_counter++);
- free(name);
- return ret;
+ lnk = find_hard_link(name, n->inode->base.inode_number);
+ if (lnk != NULL) {
+ ret = write_hard_link(out_file, &sb, name, lnk->target,
+ record_counter++);
+ free(name);
+ return ret;
+ }
}
if (!no_xattr) {
@@ -163,12 +92,7 @@ int write_tree_dfs(const sqfs_tree_node_t *n)
target = S_ISLNK(sb.st_mode) ? (char *)n->inode->extra : NULL;
ret = write_tar_header(out_file, &sb, name, target, xattr,
record_counter++);
-
- while (xattr != NULL) {
- xit = xattr;
- xattr = xattr->next;
- free(xit);
- }
+ free_xattr_list(xattr);
if (ret > 0)
goto out_skip;
diff --git a/bin/sqfs2tar/xattr.c b/bin/sqfs2tar/xattr.c
new file mode 100644
index 0000000..9a9ec82
--- /dev/null
+++ b/bin/sqfs2tar/xattr.c
@@ -0,0 +1,91 @@
+/* SPDX-License-Identifier: GPL-3.0-or-later */
+/*
+ * xattr.c
+ *
+ * Copyright (C) 2019 David Oberhollenzer <goliath@infraroot.at>
+ */
+#include "sqfs2tar.h"
+
+static tar_xattr_t *mkxattr(const sqfs_xattr_entry_t *key,
+ const sqfs_xattr_value_t *value)
+{
+ tar_xattr_t *ent;
+
+ ent = calloc(1, sizeof(*ent) + strlen((const char *)key->key) +
+ value->size + 2);
+
+ if (ent == NULL) {
+ perror("creating xattr entry");
+ return NULL;
+ }
+
+ ent->key = ent->data;
+ ent->value = (sqfs_u8 *)ent->key + strlen((const char *)key->key) + 1;
+ ent->value_len = value->size;
+
+ strcpy(ent->key, (const char *)key->key);
+ memcpy(ent->value, value->value, value->size + 1);
+ return ent;
+}
+
+int get_xattrs(const char *name, const sqfs_inode_generic_t *inode,
+ tar_xattr_t **out)
+{
+ tar_xattr_t *list = NULL, *ent;
+ sqfs_xattr_value_t *value;
+ sqfs_xattr_entry_t *key;
+ sqfs_xattr_id_t desc;
+ sqfs_u32 index;
+ size_t i;
+ int ret;
+
+ if (xr == NULL)
+ return 0;
+
+ sqfs_inode_get_xattr_index(inode, &index);
+ if (index == 0xFFFFFFFF)
+ return 0;
+
+ ret = sqfs_xattr_reader_get_desc(xr, index, &desc);
+ if (ret) {
+ sqfs_perror(name, "resolving xattr index", ret);
+ return -1;
+ }
+
+ ret = sqfs_xattr_reader_seek_kv(xr, &desc);
+ if (ret) {
+ sqfs_perror(name, "locating xattr key-value pairs", ret);
+ return -1;
+ }
+
+ for (i = 0; i < desc.count; ++i) {
+ ret = sqfs_xattr_reader_read_key(xr, &key);
+ if (ret) {
+ sqfs_perror(name, "reading xattr key", ret);
+ goto fail;
+ }
+
+ ret = sqfs_xattr_reader_read_value(xr, key, &value);
+ if (ret) {
+ sqfs_perror(name, "reading xattr value", ret);
+ free(key);
+ goto fail;
+ }
+
+ ent = mkxattr(key, value);
+ free(key);
+ free(value);
+
+ if (ent == NULL)
+ goto fail;
+
+ ent->next = list;
+ list = ent;
+ }
+
+ *out = list;
+ return 0;
+fail:
+ free_xattr_list(list);
+ return -1;
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-06 09:51:32 +0000