Release 4.17 fs/coda/pioctl.c
// 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 <linux/coda_psdev.h>
#include "coda_linux.h"
/* pioctl ops */
static int coda_ioctl_permission(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 inode *inode, int mask)
{
return (mask & MAY_EXEC) ? -EACCES : 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Linus Torvalds (pre-git) | 17 | 65.38% | 1 | 50.00% |
| Miklos Szeredi | 9 | 34.62% | 1 | 50.00% |
| Total | 26 | 100.00% | 2 | 100.00% |
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
*/
if (data.follow)
error = user_path(data.path, &path);
else
error = user_lpath(data.path, &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;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Linus Torvalds (pre-git) | 146 | 78.49% | 3 | 25.00% |
| John Kacur | 15 | 8.06% | 2 | 16.67% |
| Al Viro | 11 | 5.91% | 3 | 25.00% |
| Yoshihisa Abe | 7 | 3.76% | 1 | 8.33% |
| Jan Blunck | 4 | 2.15% | 2 | 16.67% |
| David Howells | 3 | 1.61% | 1 | 8.33% |
| Total | 186 | 100.00% | 12 | 100.00% |
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Linus Torvalds (pre-git) | 247 | 76.95% | 8 | 28.57% |
| John Kacur | 18 | 5.61% | 2 | 7.14% |
| Al Viro | 14 | 4.36% | 5 | 17.86% |
| Miklos Szeredi | 9 | 2.80% | 1 | 3.57% |
| Yoshihisa Abe | 7 | 2.18% | 1 | 3.57% |
| Jan Harkes | 6 | 1.87% | 1 | 3.57% |
| Arnd Bergmann | 5 | 1.56% | 1 | 3.57% |
| Jan Blunck | 4 | 1.25% | 2 | 7.14% |
| David Howells | 3 | 0.93% | 1 | 3.57% |
| Christoph Hellwig | 3 | 0.93% | 1 | 3.57% |
| Arjan van de Ven | 2 | 0.62% | 2 | 7.14% |
| Fabian Frederick | 1 | 0.31% | 1 | 3.57% |
| Greg Kroah-Hartman | 1 | 0.31% | 1 | 3.57% |
| Dave Jones | 1 | 0.31% | 1 | 3.57% |
| Total | 321 | 100.00% | 28 | 100.00% |
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