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[PATCH] preparation to __user_walk_fd cleanup

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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>
This commit is contained in:
Al Viro 2008-07-22 08:09:30 -04:00
parent f419a2e3b6
commit 256984a838
2 changed files with 11 additions and 9 deletions
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2
fs/inotify_user.c
View File

@ -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;

18
fs/open.c
View File

@ -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 @@ asmlinkage long sys_fallocate(int fd, int mode, loff_t offset, loff_t len)
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;