s3-lib: Add file_id_string()

2 files changed, 23 insertions, 3 deletions

diff --git a/source3/lib/file_id.c b/source3/lib/file_id.c
index 026d2f8d27..1640708d6c 100644
--- a/source3/lib/file_id.c
+++ b/source3/lib/file_id.c
@@ -32,7 +32,7 @@ bool file_id_equal(const struct file_id *id1, const struct file_id *id2)
 }
 
 /*
-  a static string for a file_id structure
+  a static-like (on talloc_tos()) string for a file_id structure
  */
 const char *file_id_string_tos(const struct file_id *id)
 {
@@ -45,6 +45,19 @@ const char *file_id_string_tos(const struct file_id *id)
 }
 
 /*
+  an allocated string for a file_id structure
+ */
+const char *file_id_string(TALLOC_CTX *mem_ctx, const struct file_id *id)
+{
+	char *result = talloc_asprintf(mem_ctx, "%llx:%llx:%llx",
+				       (unsigned long long)id->devid,
+				       (unsigned long long)id->inode,
+				       (unsigned long long)id->extid);
+	SMB_ASSERT(result != NULL);
+	return result;
+}
+
+/*
   push a 16 byte version of a file id into a buffer.  This ignores the extid
   and is needed when dev/inodes are stored in persistent storage (tdbs).
  */
diff --git a/source3/lib/file_id.h b/source3/lib/file_id.h
index 594f788e49..2ca839077f 100644
--- a/source3/lib/file_id.h
+++ b/source3/lib/file_id.h
@@ -19,12 +19,19 @@
    along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
-/* The following definitions come from lib/file_id.c  */
-
 #include "librpc/gen_ndr/file_id.h"
 
+/* The following definitions come from lib/file_id.c  */
+
 bool file_id_equal(const struct file_id *id1, const struct file_id *id2);
+/*
+  a static-like (on talloc_tos()) string for a file_id structure
+ */
 const char *file_id_string_tos(const struct file_id *id);
+/*
+  an allocated string for a file_id structure
+ */
+const char *file_id_string(TALLOC_CTX *mem_ctx, const struct file_id *id);
 void push_file_id_16(char *buf, const struct file_id *id);
 void push_file_id_24(char *buf, const struct file_id *id);
 void pull_file_id_24(char *buf, struct file_id *id);