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| author | André Goddard Rosa <andre.goddard@gmail.com> | 2010-02-23 08:04:25 +0100 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2010-03-03 20:48:00 +0100 |
| commit | 04db0dde0ee1c29110642dff57fba9e438eb805c (patch) | |
| tree | ca80ec3e48470f70d233fcabf4c8d79c4b3c4bc7 | |
| parent | mqueue: apply mathematics distributivity on mq_bytes calculation (diff) | |
| download | linux-04db0dde0ee1c29110642dff57fba9e438eb805c.tar.xz linux-04db0dde0ee1c29110642dff57fba9e438eb805c.zip | |
mqueue: simplify do_open() error handling
It reduces code size:
text data bss dec hex filename
9925 72 16 10013 271d ipc/mqueue-BEFORE.o
9885 72 16 9973 26f5 ipc/mqueue-AFTER.o
Signed-off-by: André Goddard Rosa <andre.goddard@gmail.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| -rw-r--r-- | ipc/mqueue.c | 16 |
1 files changed, 10 insertions, 6 deletions
diff --git a/ipc/mqueue.c b/ipc/mqueue.c index 15eabf9d51fd..3853116a2ef8 100644 --- a/ipc/mqueue.c +++ b/ipc/mqueue.c @@ -657,24 +657,28 @@ out: static struct file *do_open(struct ipc_namespace *ipc_ns, struct dentry *dentry, int oflag) { + int ret; const struct cred *cred = current_cred(); static const int oflag2acc[O_ACCMODE] = { MAY_READ, MAY_WRITE, MAY_READ | MAY_WRITE }; if ((oflag & O_ACCMODE) == (O_RDWR | O_WRONLY)) { - dput(dentry); - mntput(ipc_ns->mq_mnt); - return ERR_PTR(-EINVAL); + ret = -EINVAL; + goto err; } if (inode_permission(dentry->d_inode, oflag2acc[oflag & O_ACCMODE])) { - dput(dentry); - mntput(ipc_ns->mq_mnt); - return ERR_PTR(-EACCES); + ret = -EACCES; + goto err; } return dentry_open(dentry, ipc_ns->mq_mnt, oflag, cred); + +err: + dput(dentry); + mntput(ipc_ns->mq_mnt); + return ERR_PTR(ret); } SYSCALL_DEFINE4(mq_open, const char __user *, u_name, int, oflag, mode_t, mode, |