cgroup simplify space stripping
Simplify the space stripping code in cgroup file write.
[akpm@linux-foundation.org: s/BUG_ON/BUILD_BUG_ON/]
Signed-off-by: Paul Jackson <pj@sgi.com>
Acked-by: Paul Menage <menage@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/kernel/cgroup.c b/kernel/cgroup.c
index 54760d5..7d20741 100644
--- a/kernel/cgroup.c
+++ b/kernel/cgroup.c
@@ -1326,6 +1326,7 @@
goto out1;
}
buffer[nbytes] = 0; /* nul-terminate */
+ strstrip(buffer); /* strip -just- trailing whitespace */
mutex_lock(&cgroup_mutex);
@@ -1346,21 +1347,9 @@
clear_bit(CGRP_NOTIFY_ON_RELEASE, &cgrp->flags);
break;
case FILE_RELEASE_AGENT:
- {
- struct cgroupfs_root *root = cgrp->root;
- /* Strip trailing newline */
- if (nbytes && (buffer[nbytes-1] == '\n'))
- buffer[nbytes-1] = 0;
-
- /* We never write anything other than '\0'
- * into the last char of release_agent_path,
- * so it always remains a NUL-terminated
- * string */
- strncpy(root->release_agent_path, buffer, nbytes);
- root->release_agent_path[nbytes] = 0;
-
+ BUILD_BUG_ON(sizeof(cgrp->root->release_agent_path) < PATH_MAX);
+ strcpy(cgrp->root->release_agent_path, buffer);
break;
- }
default:
retval = -EINVAL;
goto out2;