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authorAl Viro <viro@zeniv.linux.org.uk>2008-07-17 09:37:02 -0400
committerAl Viro <viro@zeniv.linux.org.uk>2008-07-26 20:53:22 -0400
commitb77b0646ef4efe31a7449bb3d9360fd00f95433d (patch)
treef8487fe832fbe23400c9f98e808555f0251fb158 /fs
parenta110343f0d6d41f68b7cf8c00b57a3172c67f816 (diff)
[PATCH] pass MAY_OPEN to vfs_permission() explicitly
... and get rid of the last "let's deduce mask from nameidata->flags" bit. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs')
-rw-r--r--fs/exec.c4
-rw-r--r--fs/namei.c13
2 files changed, 6 insertions, 11 deletions
diff --git a/fs/exec.c b/fs/exec.c
index b8792a13153..0ba5d355c5a 100644
--- a/fs/exec.c
+++ b/fs/exec.c
@@ -118,7 +118,7 @@ asmlinkage long sys_uselib(const char __user * library)
if (!S_ISREG(nd.path.dentry->d_inode->i_mode))
goto exit;
- error = vfs_permission(&nd, MAY_READ | MAY_EXEC);
+ error = vfs_permission(&nd, MAY_READ | MAY_EXEC | MAY_OPEN);
if (error)
goto exit;
@@ -666,7 +666,7 @@ struct file *open_exec(const char *name)
struct inode *inode = nd.path.dentry->d_inode;
file = ERR_PTR(-EACCES);
if (S_ISREG(inode->i_mode)) {
- int err = vfs_permission(&nd, MAY_EXEC);
+ int err = vfs_permission(&nd, MAY_EXEC | MAY_OPEN);
file = ERR_PTR(err);
if (!err) {
file = nameidata_to_filp(&nd,
diff --git a/fs/namei.c b/fs/namei.c
index 33dcaf025c4..6b0e8e5e079 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -263,12 +263,7 @@ int permission(struct inode *inode, int mask, struct nameidata *nd)
/* Ordinary permission routines do not understand MAY_APPEND. */
if (inode->i_op && inode->i_op->permission) {
- int extra = 0;
- if (nd) {
- if (nd->flags & LOOKUP_OPEN)
- extra |= MAY_OPEN;
- }
- retval = inode->i_op->permission(inode, mask | extra);
+ retval = inode->i_op->permission(inode, mask);
if (!retval) {
/*
* Exec permission on a regular file is denied if none
@@ -292,7 +287,7 @@ int permission(struct inode *inode, int mask, struct nameidata *nd)
return retval;
return security_inode_permission(inode,
- mask & (MAY_READ|MAY_WRITE|MAY_EXEC), nd);
+ mask & (MAY_READ|MAY_WRITE|MAY_EXEC));
}
/**
@@ -492,7 +487,7 @@ static int exec_permission_lite(struct inode *inode,
return -EACCES;
ok:
- return security_inode_permission(inode, MAY_EXEC, nd);
+ return security_inode_permission(inode, MAY_EXEC);
}
/*
@@ -1692,7 +1687,7 @@ struct file *do_filp_open(int dfd, const char *pathname,
int will_write;
int flag = open_to_namei_flags(open_flag);
- acc_mode = ACC_MODE(flag);
+ acc_mode = MAY_OPEN | ACC_MODE(flag);
/* O_TRUNC implies we need access checks for write permissions */
if (flag & O_TRUNC)