[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>

diff --git a/fs/inotify_user.c b/fs/inotify_user.c
index fe79c25..9b99ebf 100644 (file)
--- 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 d5e421a..e942667 100644 (file)
--- 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;