Contributors: 21
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Martin J. Bligh |
179 |
27.93% |
1 |
2.50% |
| Miklos Szeredi |
128 |
19.97% |
1 |
2.50% |
| Linus Torvalds (pre-git) |
117 |
18.25% |
16 |
40.00% |
| David Howells |
70 |
10.92% |
1 |
2.50% |
| Dave Hansen |
42 |
6.55% |
1 |
2.50% |
| Djalal Harouni |
29 |
4.52% |
1 |
2.50% |
| Linus Torvalds |
13 |
2.03% |
2 |
5.00% |
| Jan Kara |
10 |
1.56% |
1 |
2.50% |
| Chengguang Xu |
9 |
1.40% |
1 |
2.50% |
| Deepa Dinamani |
8 |
1.25% |
1 |
2.50% |
| Al Viro |
8 |
1.25% |
4 |
10.00% |
| Christian Brauner |
6 |
0.94% |
1 |
2.50% |
| Arnaldo Carvalho de Melo |
6 |
0.94% |
1 |
2.50% |
| Andrew Morton |
3 |
0.47% |
1 |
2.50% |
| Andi Kleen |
3 |
0.47% |
1 |
2.50% |
| Randy Dunlap |
3 |
0.47% |
1 |
2.50% |
| Satyam Sharma |
2 |
0.31% |
1 |
2.50% |
| Serge E. Hallyn |
2 |
0.31% |
1 |
2.50% |
| Greg Kroah-Hartman |
1 |
0.16% |
1 |
2.50% |
| Darrick J. Wong |
1 |
0.16% |
1 |
2.50% |
| Dave Jones |
1 |
0.16% |
1 |
2.50% |
| Total |
641 |
|
40 |
|
// SPDX-License-Identifier: GPL-2.0
/*
* linux/fs/ext2/ioctl.c
*
* Copyright (C) 1993, 1994, 1995
* Remy Card (card@masi.ibp.fr)
* Laboratoire MASI - Institut Blaise Pascal
* Universite Pierre et Marie Curie (Paris VI)
*/
#include "ext2.h"
#include <linux/capability.h>
#include <linux/time.h>
#include <linux/sched.h>
#include <linux/compat.h>
#include <linux/mount.h>
#include <asm/current.h>
#include <linux/uaccess.h>
#include <linux/fileattr.h>
int ext2_fileattr_get(struct dentry *dentry, struct fileattr *fa)
{
struct ext2_inode_info *ei = EXT2_I(d_inode(dentry));
fileattr_fill_flags(fa, ei->i_flags & EXT2_FL_USER_VISIBLE);
return 0;
}
int ext2_fileattr_set(struct user_namespace *mnt_userns,
struct dentry *dentry, struct fileattr *fa)
{
struct inode *inode = d_inode(dentry);
struct ext2_inode_info *ei = EXT2_I(inode);
if (fileattr_has_fsx(fa))
return -EOPNOTSUPP;
/* Is it quota file? Do not allow user to mess with it */
if (IS_NOQUOTA(inode))
return -EPERM;
ei->i_flags = (ei->i_flags & ~EXT2_FL_USER_MODIFIABLE) |
(fa->flags & EXT2_FL_USER_MODIFIABLE);
ext2_set_inode_flags(inode);
inode->i_ctime = current_time(inode);
mark_inode_dirty(inode);
return 0;
}
long ext2_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
{
struct inode *inode = file_inode(filp);
struct ext2_inode_info *ei = EXT2_I(inode);
unsigned short rsv_window_size;
int ret;
ext2_debug ("cmd = %u, arg = %lu\n", cmd, arg);
switch (cmd) {
case EXT2_IOC_GETVERSION:
return put_user(inode->i_generation, (int __user *) arg);
case EXT2_IOC_SETVERSION: {
__u32 generation;
if (!inode_owner_or_capable(&init_user_ns, inode))
return -EPERM;
ret = mnt_want_write_file(filp);
if (ret)
return ret;
if (get_user(generation, (int __user *) arg)) {
ret = -EFAULT;
goto setversion_out;
}
inode_lock(inode);
inode->i_ctime = current_time(inode);
inode->i_generation = generation;
inode_unlock(inode);
mark_inode_dirty(inode);
setversion_out:
mnt_drop_write_file(filp);
return ret;
}
case EXT2_IOC_GETRSVSZ:
if (test_opt(inode->i_sb, RESERVATION)
&& S_ISREG(inode->i_mode)
&& ei->i_block_alloc_info) {
rsv_window_size = ei->i_block_alloc_info->rsv_window_node.rsv_goal_size;
return put_user(rsv_window_size, (int __user *)arg);
}
return -ENOTTY;
case EXT2_IOC_SETRSVSZ: {
if (!test_opt(inode->i_sb, RESERVATION) ||!S_ISREG(inode->i_mode))
return -ENOTTY;
if (!inode_owner_or_capable(&init_user_ns, inode))
return -EACCES;
if (get_user(rsv_window_size, (int __user *)arg))
return -EFAULT;
ret = mnt_want_write_file(filp);
if (ret)
return ret;
if (rsv_window_size > EXT2_MAX_RESERVE_BLOCKS)
rsv_window_size = EXT2_MAX_RESERVE_BLOCKS;
/*
* need to allocate reservation structure for this inode
* before set the window size
*/
/*
* XXX What lock should protect the rsv_goal_size?
* Accessed in ext2_get_block only. ext3 uses i_truncate.
*/
mutex_lock(&ei->truncate_mutex);
if (!ei->i_block_alloc_info)
ext2_init_block_alloc_info(inode);
if (ei->i_block_alloc_info){
struct ext2_reserve_window_node *rsv = &ei->i_block_alloc_info->rsv_window_node;
rsv->rsv_goal_size = rsv_window_size;
} else {
ret = -ENOMEM;
}
mutex_unlock(&ei->truncate_mutex);
mnt_drop_write_file(filp);
return ret;
}
default:
return -ENOTTY;
}
}
#ifdef CONFIG_COMPAT
long ext2_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
{
/* These are just misnamed, they actually get/put from/to user an int */
switch (cmd) {
case EXT2_IOC32_GETVERSION:
cmd = EXT2_IOC_GETVERSION;
break;
case EXT2_IOC32_SETVERSION:
cmd = EXT2_IOC_SETVERSION;
break;
default:
return -ENOIOCTLCMD;
}
return ext2_ioctl(file, cmd, (unsigned long) compat_ptr(arg));
}
#endif