[PATCH] add a file_permission helper
A few more callers of permission() just want to check for a different access
pattern on an already open file. This patch adds a wrapper for permission()
that takes a file in preparation of per-mount read-only support and to clean
up the callers a little. The helper is not intended for new code, everything
without the interface set in stone should use vfs_permission()
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/fs/ncpfs/ioctl.c b/fs/ncpfs/ioctl.c
index 88df793..fd3efdc 100644
--- a/fs/ncpfs/ioctl.c
+++ b/fs/ncpfs/ioctl.c
@@ -30,11 +30,13 @@
#define NCP_PACKET_SIZE_INTERNAL 65536
static int
-ncp_get_fs_info(struct ncp_server* server, struct inode* inode, struct ncp_fs_info __user *arg)
+ncp_get_fs_info(struct ncp_server * server, struct file *file,
+ struct ncp_fs_info __user *arg)
{
+ struct inode *inode = file->f_dentry->d_inode;
struct ncp_fs_info info;
- if ((permission(inode, MAY_WRITE, NULL) != 0)
+ if ((file_permission(file, MAY_WRITE) != 0)
&& (current->uid != server->m.mounted_uid)) {
return -EACCES;
}
@@ -58,11 +60,13 @@
}
static int
-ncp_get_fs_info_v2(struct ncp_server* server, struct inode* inode, struct ncp_fs_info_v2 __user * arg)
+ncp_get_fs_info_v2(struct ncp_server * server, struct file *file,
+ struct ncp_fs_info_v2 __user * arg)
{
+ struct inode *inode = file->f_dentry->d_inode;
struct ncp_fs_info_v2 info2;
- if ((permission(inode, MAY_WRITE, NULL) != 0)
+ if ((file_permission(file, MAY_WRITE) != 0)
&& (current->uid != server->m.mounted_uid)) {
return -EACCES;
}
@@ -190,7 +194,7 @@
switch (cmd) {
case NCP_IOC_NCPREQUEST:
- if ((permission(inode, MAY_WRITE, NULL) != 0)
+ if ((file_permission(filp, MAY_WRITE) != 0)
&& (current->uid != server->m.mounted_uid)) {
return -EACCES;
}
@@ -245,16 +249,16 @@
return ncp_conn_logged_in(inode->i_sb);
case NCP_IOC_GET_FS_INFO:
- return ncp_get_fs_info(server, inode, argp);
+ return ncp_get_fs_info(server, filp, argp);
case NCP_IOC_GET_FS_INFO_V2:
- return ncp_get_fs_info_v2(server, inode, argp);
+ return ncp_get_fs_info_v2(server, filp, argp);
case NCP_IOC_GETMOUNTUID2:
{
unsigned long tmp = server->m.mounted_uid;
- if ( (permission(inode, MAY_READ, NULL) != 0)
+ if ((file_permission(filp, MAY_READ) != 0)
&& (current->uid != server->m.mounted_uid))
{
return -EACCES;
@@ -268,7 +272,7 @@
{
struct ncp_setroot_ioctl sr;
- if ( (permission(inode, MAY_READ, NULL) != 0)
+ if ((file_permission(filp, MAY_READ) != 0)
&& (current->uid != server->m.mounted_uid))
{
return -EACCES;
@@ -343,7 +347,7 @@
#ifdef CONFIG_NCPFS_PACKET_SIGNING
case NCP_IOC_SIGN_INIT:
- if ((permission(inode, MAY_WRITE, NULL) != 0)
+ if ((file_permission(filp, MAY_WRITE) != 0)
&& (current->uid != server->m.mounted_uid))
{
return -EACCES;
@@ -366,7 +370,7 @@
return 0;
case NCP_IOC_SIGN_WANTED:
- if ( (permission(inode, MAY_READ, NULL) != 0)
+ if ((file_permission(filp, MAY_READ) != 0)
&& (current->uid != server->m.mounted_uid))
{
return -EACCES;
@@ -379,7 +383,7 @@
{
int newstate;
- if ( (permission(inode, MAY_WRITE, NULL) != 0)
+ if ((file_permission(filp, MAY_WRITE) != 0)
&& (current->uid != server->m.mounted_uid))
{
return -EACCES;
@@ -400,7 +404,7 @@
#ifdef CONFIG_NCPFS_IOCTL_LOCKING
case NCP_IOC_LOCKUNLOCK:
- if ( (permission(inode, MAY_WRITE, NULL) != 0)
+ if ((file_permission(filp, MAY_WRITE) != 0)
&& (current->uid != server->m.mounted_uid))
{
return -EACCES;
@@ -605,7 +609,7 @@
#endif /* CONFIG_NCPFS_NLS */
case NCP_IOC_SETDENTRYTTL:
- if ((permission(inode, MAY_WRITE, NULL) != 0) &&
+ if ((file_permission(filp, MAY_WRITE) != 0) &&
(current->uid != server->m.mounted_uid))
return -EACCES;
{
@@ -635,7 +639,7 @@
so we have this out of switch */
if (cmd == NCP_IOC_GETMOUNTUID) {
__kernel_uid_t uid = 0;
- if ((permission(inode, MAY_READ, NULL) != 0)
+ if ((file_permission(filp, MAY_READ) != 0)
&& (current->uid != server->m.mounted_uid)) {
return -EACCES;
}