From 256984a83880ff7ac78055cb87baea48137f0b77 Mon Sep 17 00:00:00 2001
From: Al Viro <viro@zeniv.linux.org.uk>
Date: Tue, 22 Jul 2008 08:09:30 -0400
Subject: [PATCH] [PATCH] preparation to __user_walk_fd cleanup
Almost all users __user_walk_fd() and friends care only about struct path.
Get rid of the few that do not.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
---
fs/inotify_user.c | 2 +-
fs/open.c | 18 ++++++++++--------
2 files changed, 11 insertions(+), 9 deletions(-)
diff --git a/fs/inotify_user.c b/fs/inotify_user.c
index fe79c25d95dc..9b99ebf28884 100644
--- a/fs/inotify_user.c
+++ b/fs/inotify_user.c
@@ -365,7 +365,7 @@ static int find_inode(const char __user *dirname, struct nameidata *nd,
if (error)
return error;
/* you can only watch an inode if you have read permissions on it */
- error = vfs_permission(nd, MAY_READ);
+ error = inode_permission(nd->path.dentry->d_inode, MAY_READ);
if (error)
path_put(&nd->path);
return error;
diff --git a/fs/open.c b/fs/open.c
index d5e421ad0cf6..e94266700eda 100644
--- a/fs/open.c
+++ b/fs/open.c
@@ -251,7 +251,7 @@ static long do_sys_truncate(const char __user * path, loff_t length)
if (error)
goto dput_and_out;
- error = vfs_permission(&nd, MAY_WRITE);
+ error = inode_permission(inode, MAY_WRITE);
if (error)
goto mnt_drop_write_and_out;
@@ -426,6 +426,7 @@ out:
asmlinkage long sys_faccessat(int dfd, const char __user *filename, int mode)
{
struct nameidata nd;
+ struct inode *inode;
int old_fsuid, old_fsgid;
kernel_cap_t uninitialized_var(old_cap); /* !SECURE_NO_SETUID_FIXUP */
int res;
@@ -461,7 +462,9 @@ asmlinkage long sys_faccessat(int dfd, const char __user *filename, int mode)
if (res)
goto out;
- if ((mode & MAY_EXEC) && S_ISREG(nd.path.dentry->d_inode->i_mode)) {
+ inode = nd.path.dentry->d_inode;
+
+ if ((mode & MAY_EXEC) && S_ISREG(inode->i_mode)) {
/*
* MAY_EXEC on regular files is denied if the fs is mounted
* with the "noexec" flag.
@@ -471,10 +474,9 @@ asmlinkage long sys_faccessat(int dfd, const char __user *filename, int mode)
goto out_path_release;
}
- res = vfs_permission(&nd, mode | MAY_ACCESS);
+ res = inode_permission(inode, mode | MAY_ACCESS);
/* SuS v2 requires we report a read only fs too */
- if(res || !(mode & S_IWOTH) ||
- special_file(nd.path.dentry->d_inode->i_mode))
+ if (res || !(mode & S_IWOTH) || special_file(inode->i_mode))
goto out_path_release;
/*
* This is a rare case where using __mnt_is_readonly()
@@ -515,7 +517,7 @@ asmlinkage long sys_chdir(const char __user * filename)
if (error)
goto out;
- error = vfs_permission(&nd, MAY_EXEC | MAY_ACCESS);
+ error = inode_permission(nd.path.dentry->d_inode, MAY_EXEC | MAY_ACCESS);
if (error)
goto dput_and_out;
@@ -544,7 +546,7 @@ asmlinkage long sys_fchdir(unsigned int fd)
if (!S_ISDIR(inode->i_mode))
goto out_putf;
- error = file_permission(file, MAY_EXEC | MAY_ACCESS);
+ error = inode_permission(inode, MAY_EXEC | MAY_ACCESS);
if (!error)
set_fs_pwd(current->fs, &file->f_path);
out_putf:
@@ -562,7 +564,7 @@ asmlinkage long sys_chroot(const char __user * filename)
if (error)
goto out;
- error = vfs_permission(&nd, MAY_EXEC | MAY_ACCESS);
+ error = inode_permission(nd.path.dentry->d_inode, MAY_EXEC | MAY_ACCESS);
if (error)
goto dput_and_out;
--
2.20.1