[Libguestfs] [PATCH v4 5/6] New API: find_inode

[Matteo Cafasso]

Library's counterpart of the daemon's internal_find_inode command.

It writes the daemon's command output on a temporary file and parses it,
deserialising the XDR formatted tsk_dirent structs.

It returns to the caller the list of tsk_dirent structs generated by the
internal_find_inode command.

Signed-off-by: Matteo Cafasso <noxdafox at gmail.com>
---
 generator/actions.ml | 12 ++++++++++++
 src/tsk.c            | 26 ++++++++++++++++++++++++++
 2 files changed, 38 insertions(+)

diff --git a/generator/actions.ml b/generator/actions.ml
index 42593b9..a52b8df 100644
--- a/generator/actions.ml
+++ b/generator/actions.ml
@@ -3702,6 +3702,18 @@ Unknown file type
 
 =back" };
 
+  { defaults with
+    name = "find_inode"; added = (1, 35, 2);
+    style = RStructList ("dirents", "tsk_dirent"), [Mountable "device"; Int64 "inode";], [];
+    optional = Some "libtsk";
+    progress = true; cancellable = true;
+    shortdesc = "search the entries associated to the given inode";
+    longdesc = "\
+Searches all the entries associated with the given inode.
+
+For each entry, a C<tsk_dirent> structure is returned.
+See C<filesystem_walk> for more information about C<tsk_dirent> structures." };
+
 ]
 
 (* daemon_functions are any functions which cause some action
diff --git a/src/tsk.c b/src/tsk.c
index cc89e31..d3da834 100644
--- a/src/tsk.c
+++ b/src/tsk.c
@@ -63,6 +63,32 @@ guestfs_impl_filesystem_walk (guestfs_h *g, const char *mountable)
   return parse_dirent_file (g, fp);  /* caller frees */
 }
 
+struct guestfs_tsk_dirent_list *
+guestfs_impl_find_inode (guestfs_h *g, const char *mountable, int64_t inode)
+{
+  int ret = 0;
+  CLEANUP_FCLOSE FILE *fp = NULL;
+  CLEANUP_UNLINK_FREE char *tmpfile = NULL;
+
+  ret = guestfs_int_lazy_make_tmpdir (g);
+  if (ret < 0)
+    return NULL;
+
+  tmpfile = safe_asprintf (g, "%s/find_inode%d", g->tmpdir, ++g->unique);
+
+  ret = guestfs_internal_find_inode (g, mountable, inode, tmpfile);
+  if (ret < 0)
+    return NULL;
+
+  fp = fopen (tmpfile, "r");
+  if (fp == NULL) {
+    perrorf (g, "fopen: %s", tmpfile);
+    return NULL;
+  }
+
+  return parse_dirent_file (g, fp);  /* caller frees */
+}
+
 /* Parse the file content and return dirents list.
  * Return a list of tsk_dirent on success, NULL on error.
  */
-- 
2.9.3