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authorAl Viro <viro@zeniv.linux.org.uk>2011-06-20 19:57:03 -0400
committerAl Viro <viro@zeniv.linux.org.uk>2011-07-20 01:43:32 -0400
commit4ad5abb3d01a2c10854969b00982fadb130784a6 (patch)
tree757ad9baeab65982e8c8ed61b222c8969b3dbf43 /fs/namei.c
parentd594e7ec4da6c1a527dea4965eee37cd785792b8 (diff)
downloadop-kernel-dev-4ad5abb3d01a2c10854969b00982fadb130784a6.zip
op-kernel-dev-4ad5abb3d01a2c10854969b00982fadb130784a6.tar.gz
no reason to keep exec_permission() separate now
cache footprint alone makes it a bad idea... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/namei.c')
-rw-r--r--fs/namei.c45
1 files changed, 4 insertions, 41 deletions
diff --git a/fs/namei.c b/fs/namei.c
index 758bae7..b3c1a97 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -311,43 +311,6 @@ int inode_permission(struct inode *inode, int mask)
}
/**
- * exec_permission - check for right to do lookups in a given directory
- * @inode: inode to check permission on
- * @mask: MAY_EXEC and possibly MAY_NOT_BLOCK flags.
- *
- * Short-cut version of inode_permission(), for calling on directories
- * during pathname resolution. Combines parts of inode_permission()
- * and generic_permission(), and tests ONLY for MAY_EXEC permission.
- *
- * If appropriate, check DAC only. If not appropriate, or
- * short-cut DAC fails, then call ->permission() to do more
- * complete permission check.
- */
-static inline int exec_permission(struct inode *inode, int mask)
-{
- int ret;
- struct user_namespace *ns = inode_userns(inode);
-
- if (inode->i_op->permission) {
- ret = inode->i_op->permission(inode, mask);
- if (likely(!ret))
- goto ok;
- } else {
- ret = acl_permission_check(inode, mask);
- if (likely(!ret))
- goto ok;
- if (ret != -EACCES)
- return ret;
- if (ns_capable(ns, CAP_DAC_OVERRIDE) ||
- ns_capable(ns, CAP_DAC_READ_SEARCH))
- goto ok;
- }
- return ret;
-ok:
- return security_inode_permission(inode, mask);
-}
-
-/**
* path_get - get a reference to a path
* @path: path to get the reference to
*
@@ -1220,13 +1183,13 @@ retry:
static inline int may_lookup(struct nameidata *nd)
{
if (nd->flags & LOOKUP_RCU) {
- int err = exec_permission(nd->inode, MAY_EXEC|MAY_NOT_BLOCK);
+ int err = inode_permission(nd->inode, MAY_EXEC|MAY_NOT_BLOCK);
if (err != -ECHILD)
return err;
if (unlazy_walk(nd, NULL))
return -ECHILD;
}
- return exec_permission(nd->inode, MAY_EXEC);
+ return inode_permission(nd->inode, MAY_EXEC);
}
static inline int handle_dots(struct nameidata *nd, int type)
@@ -1501,7 +1464,7 @@ static int path_init(int dfd, const char *name, unsigned int flags,
if (!S_ISDIR(dentry->d_inode->i_mode))
goto fput_fail;
- retval = exec_permission(dentry->d_inode, MAY_EXEC);
+ retval = inode_permission(dentry->d_inode, MAY_EXEC);
if (retval)
goto fput_fail;
}
@@ -1658,7 +1621,7 @@ static struct dentry *__lookup_hash(struct qstr *name,
struct dentry *dentry;
int err;
- err = exec_permission(inode, MAY_EXEC);
+ err = inode_permission(inode, MAY_EXEC);
if (err)
return ERR_PTR(err);
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