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authorPaul Jackson <pj@sgi.com>2008-02-07 00:13:44 -0800
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2008-02-07 08:42:18 -0800
commit622d42cac9ed42098aa50c53994f625abfa3d473 (patch)
tree9bb8e2b5e84406609f2bcf04f45c60321511ca1a /kernel/cgroup.c
parente18f6318e5dab189efd4cb0bbfcbd923cc373e3c (diff)
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>
Diffstat (limited to 'kernel/cgroup.c')
-rw-r--r--kernel/cgroup.c17
1 files changed, 3 insertions, 14 deletions
diff --git a/kernel/cgroup.c b/kernel/cgroup.c
index 54760d5b651e..7d207414f2c7 100644
--- a/kernel/cgroup.c
+++ b/kernel/cgroup.c
@@ -1326,6 +1326,7 @@ static ssize_t cgroup_common_file_write(struct cgroup *cgrp,
goto out1;
}
buffer[nbytes] = 0; /* nul-terminate */
+ strstrip(buffer); /* strip -just- trailing whitespace */
mutex_lock(&cgroup_mutex);
@@ -1346,21 +1347,9 @@ static ssize_t cgroup_common_file_write(struct cgroup *cgrp,
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;

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