[oe-commits] Saul Wold : makedevs: Do not return error if the fifo exisits

[git at git.openembedded.org]

Module: openembedded-core.git
Branch: master
Commit: 3a4b0e7973bef43f16058137e64600e2f890b117
URL:    http://git.openembedded.org/?p=openembedded-core.git&a=commit;h=3a4b0e7973bef43f16058137e64600e2f890b117

Author: Saul Wold <sgw at linux.intel.com>
Date:   Tue Oct  1 16:57:52 2013 +0000

makedevs: Do not return error if the fifo exisits

This ensures that makedevs will not cause image creation failures
when it encounters a pipe (fifo) that exists from a previous image.
This handles mode changes and it will correctly fail for dangling
symlinks.

[YOCTO #5288]

Signed-off-by: Saul Wold <sgw at linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie at linuxfoundation.org>

---

 .../makedevs/makedevs-1.0.0/makedevs.c             |   16 ++++++++++++++--
 1 files changed, 14 insertions(+), 2 deletions(-)

diff --git a/meta/recipes-devtools/makedevs/makedevs-1.0.0/makedevs.c b/meta/recipes-devtools/makedevs/makedevs-1.0.0/makedevs.c
index 5d2c45b..53700c6 100644
--- a/meta/recipes-devtools/makedevs/makedevs-1.0.0/makedevs.c
+++ b/meta/recipes-devtools/makedevs/makedevs-1.0.0/makedevs.c
@@ -274,8 +274,20 @@ static void add_new_file(char *name, char *path, unsigned long uid,
 static void add_new_fifo(char *name, char *path, unsigned long uid,
 				  unsigned long gid, unsigned long mode)
 {
-	if (mknod(path, mode, 0))
-		error_msg_and_die("%s: file can not be created with mknod!", path);
+	int status;
+	struct stat sb;
+
+	memset(&sb, 0, sizeof(struct stat));
+	status = stat(path, &sb);
+
+
+	/* Update the mode if we exist and are a fifo already */
+	if (status >= 0 && S_ISFIFO(sb.st_mode)) {
+		chmod(path, mode);
+	} else {
+		if (mknod(path, mode, 0))
+			error_msg_and_die("%s: file can not be created with mknod!", path);
+	}
 	chown(path, uid, gid);
 //	printf("File: %s %s  UID: %ld  GID: %ld  MODE: %04lo\n",
 //			path, name, gid, uid, mode);