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| 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/proc_sysctl.c | |
| parent | 34286d6662308d82aed891852d04c7c3a2649b16 (diff) | |
| download | lwn-b74c79e99389cd79b31fcc08f82c24e492e63c7e.tar.gz lwn-b74c79e99389cd79b31fcc08f82c24e492e63c7e.zip | |
fs: provide rcu-walk aware permission i_ops
Signed-off-by: Nick Piggin <npiggin@kernel.dk>
Diffstat (limited to 'fs/proc/proc_sysctl.c')
| -rw-r--r-- | fs/proc/proc_sysctl.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/fs/proc/proc_sysctl.c b/fs/proc/proc_sysctl.c index c9097f43b425..09a1f92a34ef 100644 --- a/fs/proc/proc_sysctl.c +++ b/fs/proc/proc_sysctl.c @@ -295,7 +295,7 @@ out: return ret; } -static int proc_sys_permission(struct inode *inode, int mask) +static int proc_sys_permission(struct inode *inode, int mask,unsigned int flags) { /* * sysctl entries that are not writeable, @@ -305,6 +305,9 @@ static int proc_sys_permission(struct inode *inode, int mask) struct ctl_table *table; int error; + if (flags & IPERM_FLAG_RCU) + return -ECHILD; + /* Executable files are not allowed under /proc/sys/ */ if ((mask & MAY_EXEC) && S_ISREG(inode->i_mode)) return -EACCES; |