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authorDavid Oberhollenzer <david.oberhollenzer@sigma-star.at>2019-08-11 13:59:13 +0200
committerDavid Oberhollenzer <david.oberhollenzer@sigma-star.at>2019-08-11 14:11:30 +0200
commit33d5e09ccbf2bafe3d06f615b11bf29d07f47784 (patch)
treed9240bdf940cda58bcbb1dfdb58b3006b7445117 /lib
parent4b02470e6e8126918549d292cbed610a6cbfbf68 (diff)
Add gensquashfs option to read xattrs from input files
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
Diffstat (limited to 'lib')
-rw-r--r--lib/fstree/fstree_from_dir.c79
1 files changed, 79 insertions, 0 deletions
diff --git a/lib/fstree/fstree_from_dir.c b/lib/fstree/fstree_from_dir.c
index 7301d91..4b89272 100644
--- a/lib/fstree/fstree_from_dir.c
+++ b/lib/fstree/fstree_from_dir.c
@@ -10,6 +10,9 @@
#include "util.h"
#include <sys/types.h>
+#ifdef HAVE_SYS_XATTR_H
+#include <sys/xattr.h>
+#endif
#include <dirent.h>
#include <unistd.h>
#include <string.h>
@@ -52,6 +55,75 @@ fail:
return NULL;
}
+#ifdef HAVE_SYS_XATTR_H
+static int populate_xattr(fstree_t *fs, tree_node_t *node)
+{
+ char *key, *value = NULL, *buffer = NULL;
+ ssize_t buflen, vallen, keylen;
+
+ buflen = listxattr(node->name, NULL, 0);
+
+ if (buflen < 0) {
+ perror("listxattr");
+ return -1;
+ }
+
+ if (buflen == 0)
+ return 0;
+
+ buffer = malloc(buflen);
+ if (buffer == NULL) {
+ perror("xattr name buffer");
+ return -1;
+ }
+
+ buflen = listxattr(node->name, buffer, buflen);
+ if (buflen == -1) {
+ perror("listxattr");
+ goto fail;
+ }
+
+ key = buffer;
+ while (buflen > 0) {
+ vallen = getxattr(node->name, key, NULL, 0);
+ if (vallen == -1)
+ goto fail;
+
+ if (vallen > 0) {
+ value = calloc(1, vallen + 1);
+ if (value == NULL) {
+ perror("xattr value buffer");
+ goto fail;
+ }
+
+ vallen = getxattr(node->name, key, value, vallen);
+ if (vallen == -1) {
+ perror("getxattr");
+ goto fail;
+ }
+
+ value[vallen] = 0;
+ if (fstree_add_xattr(fs, node, key, value))
+ goto fail;
+
+ free(value);
+ value = NULL;
+ }
+
+ keylen = strlen(key) + 1;
+ buflen -= keylen;
+ key += keylen;
+ }
+
+ free(buffer);
+ return 0;
+fail:
+ free(value);
+ free(buffer);
+ return -1;
+}
+#endif
+
static int populate_dir(fstree_t *fs, tree_node_t *root, dev_t devstart,
unsigned int flags)
{
@@ -115,6 +187,13 @@ static int populate_dir(fstree_t *fs, tree_node_t *root, dev_t devstart,
goto fail;
}
+#ifdef HAVE_SYS_XATTR_H
+ if (flags & DIR_SCAN_READ_XATTR) {
+ if (populate_xattr(fs, n))
+ return -1;
+ }
+#endif
+
free(extra);
extra = NULL;
}