From: Paul Jackson Date: Thu, 7 Feb 2008 08:13:44 +0000 (-0800) Subject: cgroup simplify space stripping X-Git-Tag: firefly_0821_release~22976 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=622d42cac9ed42098aa50c53994f625abfa3d473;p=firefly-linux-kernel-4.4.55.git 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 Acked-by: Paul Menage Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- 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;