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| author | Al Viro | 2012-08-12 22:17:59 +0200 |
|---|---|---|
| committer | Al Viro | 2012-09-27 03:08:53 +0200 |
| commit | f33ff9927f42045116d738ee47ff7bc59f739bd7 (patch) | |
| tree | 917e0d7c10392a884a0aeda8733bdd2ef8e2c105 /fs/fcntl.c | |
| parent | fanotify: sanitize failure exits in copy_event_to_user() (diff) | |
| download | kernel-qcow2-linux-f33ff9927f42045116d738ee47ff7bc59f739bd7.tar.gz kernel-qcow2-linux-f33ff9927f42045116d738ee47ff7bc59f739bd7.tar.xz kernel-qcow2-linux-f33ff9927f42045116d738ee47ff7bc59f739bd7.zip | |
take rlimit check to callers of expand_files()
... except for one in android, where the check is different
and already done in caller. No need to recalculate rlimit
many times in alloc_fd() either.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/fcntl.c')
| -rw-r--r-- | fs/fcntl.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/fcntl.c b/fs/fcntl.c index 887b5ba8c9b5..08e6af5c1b1f 100644 --- a/fs/fcntl.c +++ b/fs/fcntl.c @@ -64,6 +64,9 @@ SYSCALL_DEFINE3(dup3, unsigned int, oldfd, unsigned int, newfd, int, flags) if (unlikely(oldfd == newfd)) return -EINVAL; + if (newfd >= rlimit(RLIMIT_NOFILE)) + return -EMFILE; + spin_lock(&files->file_lock); err = expand_files(files, newfd); file = fcheck(oldfd); |