diff options
| author | Nick Piggin <npiggin@kernel.dk> | 2011-01-07 17:49:58 +1100 |
|---|---|---|
| committer | Nick Piggin <npiggin@kernel.dk> | 2011-01-07 17:50:29 +1100 |
| commit | b74c79e99389cd79b31fcc08f82c24e492e63c7e (patch) | |
| tree | 763c6b412517306670bc625e90035f2d16bb739f /fs/proc/base.c | |
| parent | 34286d6662308d82aed891852d04c7c3a2649b16 (diff) | |
fs: provide rcu-walk aware permission i_ops
Signed-off-by: Nick Piggin <npiggin@kernel.dk>
Diffstat (limited to 'fs/proc/base.c')
| -rw-r--r-- | fs/proc/base.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/fs/proc/base.c b/fs/proc/base.c index dc5b2fcadc3..b953d41d9ab 100644 --- a/fs/proc/base.c +++ b/fs/proc/base.c @@ -2114,11 +2114,13 @@ static const struct file_operations proc_fd_operations = { * /proc/pid/fd needs a special permission handler so that a process can still * access /proc/self/fd after it has executed a setuid(). */ -static int proc_fd_permission(struct inode *inode, int mask) +static int proc_fd_permission(struct inode *inode, int mask, unsigned int flags) { int rv; - rv = generic_permission(inode, mask, NULL); + if (flags & IPERM_FLAG_RCU) + return -ECHILD; + rv = generic_permission(inode, mask, flags, NULL); if (rv == 0) return 0; if (task_pid(current) == proc_pid(inode)) |