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fs: provide rcu-walk aware permission i_ops

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Signed-off-by: Nick Piggin <npiggin@kernel.dk>
This commit is contained in:
Nick Piggin
2011-01-07 17:49:58 +11:00
parent 34286d6662
commit b74c79e993
60 changed files with 287 additions and 146 deletions
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5
fs/coda/dir.c
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@@ -135,10 +135,13 @@ exit:
}
int coda_permission(struct inode *inode, int mask)
int coda_permission(struct inode *inode, int mask, unsigned int flags)
{
int error;
if (flags & IPERM_FLAG_RCU)
return -ECHILD;
mask &= MAY_READ | MAY_WRITE | MAY_EXEC;
if (!mask)

6
fs/coda/pioctl.c
View File

@@ -24,7 +24,7 @@
#include <linux/coda_psdev.h>
/* pioctl ops */
static int coda_ioctl_permission(struct inode *inode, int mask);
static int coda_ioctl_permission(struct inode *inode, int mask, unsigned int flags);
static long coda_pioctl(struct file *filp, unsigned int cmd,
unsigned long user_data);
@@ -41,8 +41,10 @@ const struct file_operations coda_ioctl_operations = {
};
/* the coda pioctl inode ops */
static int coda_ioctl_permission(struct inode *inode, int mask)
static int coda_ioctl_permission(struct inode *inode, int mask, unsigned int flags)
{
if (flags & IPERM_FLAG_RCU)
return -ECHILD;
return (mask & MAY_EXEC) ? -EACCES : 0;
}