Contributors: 15
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Linus Torvalds (pre-git) |
233 |
72.36% |
8 |
25.81% |
| John Kacur |
18 |
5.59% |
2 |
6.45% |
| Al Viro |
18 |
5.59% |
6 |
19.35% |
| Christian Brauner |
10 |
3.11% |
1 |
3.23% |
| Miklos Szeredi |
9 |
2.80% |
1 |
3.23% |
| Yoshihisa Abe |
7 |
2.17% |
1 |
3.23% |
| Jan Harkes |
6 |
1.86% |
1 |
3.23% |
| Arnd Bergmann |
5 |
1.55% |
1 |
3.23% |
| Jan Blunck |
4 |
1.24% |
2 |
6.45% |
| David Howells |
4 |
1.24% |
2 |
6.45% |
| Christoph Hellwig |
3 |
0.93% |
1 |
3.23% |
| Arjan van de Ven |
2 |
0.62% |
2 |
6.45% |
| Fabian Frederick |
1 |
0.31% |
1 |
3.23% |
| Greg Kroah-Hartman |
1 |
0.31% |
1 |
3.23% |
| Dave Jones |
1 |
0.31% |
1 |
3.23% |
| Total |
322 |
|
31 |
|
// SPDX-License-Identifier: GPL-2.0
/*
* Pioctl operations for Coda.
* Original version: (C) 1996 Peter Braam
* Rewritten for Linux 2.1: (C) 1997 Carnegie Mellon University
*
* Carnegie Mellon encourages users of this code to contribute improvements
* to the Coda project. Contact Peter Braam <coda@cs.cmu.edu>.
*/
#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/time.h>
#include <linux/fs.h>
#include <linux/stat.h>
#include <linux/errno.h>
#include <linux/string.h>
#include <linux/namei.h>
#include <linux/module.h>
#include <linux/uaccess.h>
#include <linux/coda.h>
#include "coda_psdev.h"
#include "coda_linux.h"
/* pioctl ops */
static int coda_ioctl_permission(struct user_namespace *mnt_userns,
struct inode *inode, int mask);
static long coda_pioctl(struct file *filp, unsigned int cmd,
unsigned long user_data);
/* exported from this file */
const struct inode_operations coda_ioctl_inode_operations = {
.permission = coda_ioctl_permission,
.setattr = coda_setattr,
};
const struct file_operations coda_ioctl_operations = {
.unlocked_ioctl = coda_pioctl,
.llseek = noop_llseek,
};
/* the coda pioctl inode ops */
static int coda_ioctl_permission(struct user_namespace *mnt_userns,
struct inode *inode, int mask)
{
return (mask & MAY_EXEC) ? -EACCES : 0;
}
static long coda_pioctl(struct file *filp, unsigned int cmd,
unsigned long user_data)
{
struct path path;
int error;
struct PioctlData data;
struct inode *inode = file_inode(filp);
struct inode *target_inode = NULL;
struct coda_inode_info *cnp;
/* get the Pioctl data arguments from user space */
if (copy_from_user(&data, (void __user *)user_data, sizeof(data)))
return -EINVAL;
/*
* Look up the pathname. Note that the pathname is in
* user memory, and namei takes care of this
*/
error = user_path_at(AT_FDCWD, data.path,
data.follow ? LOOKUP_FOLLOW : 0, &path);
if (error)
return error;
target_inode = d_inode(path.dentry);
/* return if it is not a Coda inode */
if (target_inode->i_sb != inode->i_sb) {
error = -EINVAL;
goto out;
}
/* now proceed to make the upcall */
cnp = ITOC(target_inode);
error = venus_pioctl(inode->i_sb, &(cnp->c_fid), cmd, &data);
out:
path_put(&path);
return error;
}