This patch store the last errno value to last_errno value and add

cgroup_add_last_errno procedure to show this number.

Use this procedure to show the cause of the error when ECGOTHER is returned.

[balbir@linux.vnet.ibm.com: fix last_errno in config.c]
Signed-off-by: Ivana Varekova <varekova@redhat.com>
Signed-off-by: Balbir Singh <balbir@linux.vnet.ibm.com>

git-svn-id: https://libcg.svn.sourceforge.net/svnroot/libcg/trunk@329 4f4bb910-9a46-0410-90c8-c897d4f1cd53

1 files changed, 9 insertions, 3 deletions

diff --git a/config.c b/config.c
index 154ebad..95782f6 100644
--- a/config.c
+++ b/config.c
@@ -339,17 +339,22 @@ int cgroup_config_mount_fs()
 		struct cg_mount_table_s *curr =	&(config_mount_table[i]);
 
 		ret = stat(curr->path, &buff);
-
-		if (ret < 0 && errno != ENOENT)
+		
+		if (ret < 0 && errno != ENOENT) {
+			last_errno = errno;
 			return ECGOTHER;
+		}
 
 		if (errno == ENOENT) {
 			ret = mkdir(curr->path,
 					S_IRWXU | S_IRWXG | S_IROTH | S_IXOTH);
-			if (ret < 0)
+			if (ret < 0) {
+				last_errno = errno;
 				return ECGOTHER;
+			}
 		} else if (!S_ISDIR(buff.st_mode)) {
 			errno = ENOTDIR;
+			last_errno = errno;
 			return ECGOTHER;
 		}
 
@@ -432,6 +437,7 @@ int cgroup_config_load_config(const char *pathname)
 
 	if (!yyin) {
 		dbg("Failed to open file %s\n", pathname);
+		last_errno = errno;
 		return ECGOTHER;
 	}