asmlinkage long sys_newlstat(char * filename, struct stat * statbuf)
{
struct nameidata nd;
int error;
error = user_path_walk_link(filename, &nd);
if (!error) {
error = do_revalidate(nd.dentry);
if (!error)
error = cp_new_stat(nd.dentry->d_inode, statbuf);
path_release(&nd);
}
return error;
}
asmlinkage long sys_newfstat(unsigned int fd, struct stat * statbuf)
{
struct file * f;
int err = -EBADF;
f = fget(fd);
if (f) {
struct dentry * dentry = f->f_dentry;
err = do_revalidate(dentry);
if (!err)
err = cp_new_stat(dentry->d_inode, statbuf);
fput(f);
}
return err;
}
/*
* For backward compatibility? Maybe this should be moved
* into arch/i386 instead?
*/
asmlinkage long sys_stat(char * filename, struct __old_kernel_stat * statbuf)
{
struct nameidata nd;
int error, errcnt = 0;
again:
error = user_path_walk(filename, &nd);
if (!error) {
error = do_revalidate(nd.dentry);
if (!error)
error = cp_old_stat(nd.dentry->d_inode, statbuf);
path_release(&nd);
}
if (error == -ESTALE && !errcnt) {
errcnt++;
goto again;
}
return error;
}
asmlinkage long sys_readlink(const char * path, char * buf, int bufsiz)
{
struct nameidata nd;
int error;
if (bufsiz <= 0)
return -EINVAL;
error = user_path_walk_link(path, &nd);
if (!error) {
struct inode * inode = nd.dentry->d_inode;
error = -EINVAL;
if (inode->i_op && inode->i_op->readlink &&
!(error = do_revalidate(nd.dentry))) {
UPDATE_ATIME(inode);
error = inode->i_op->readlink(nd.dentry, buf, bufsiz);
}
path_release(&nd);
}
return error;
}
/* XXX check this out */
struct presto_file_set *presto_path2fileset(const char *name)
{
struct nameidata nd;
struct presto_file_set *fileset;
int error;
ENTRY;
error = presto_walk(name, &nd);
if (!error) {
#if 0
error = do_revalidate(nd.dentry);
#endif
if (!error)
fileset = presto_fset(nd.dentry);
path_release(&nd);
EXIT;
} else
fileset = ERR_PTR(error);
EXIT;
return fileset;
}
