Contributors: 12
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Serge E. Hallyn |
120 |
37.85% |
2 |
11.11% |
| Aristeu Sergio Rozanski Filho |
51 |
16.09% |
1 |
5.56% |
| Roman Gushchin |
41 |
12.93% |
3 |
16.67% |
| Al Viro |
38 |
11.99% |
1 |
5.56% |
| Linus Torvalds (pre-git) |
24 |
7.57% |
4 |
22.22% |
| Mateusz Guzik |
20 |
6.31% |
1 |
5.56% |
| Miklos Szeredi |
14 |
4.42% |
1 |
5.56% |
| Odin Ugedal |
4 |
1.26% |
1 |
5.56% |
| Harish Kasiviswanathan |
2 |
0.63% |
1 |
5.56% |
| Greg Kroah-Hartman |
1 |
0.32% |
1 |
5.56% |
| Christoph Hellwig |
1 |
0.32% |
1 |
5.56% |
| Linus Torvalds |
1 |
0.32% |
1 |
5.56% |
| Total |
317 |
|
18 |
|
/* SPDX-License-Identifier: GPL-2.0 */
#include <linux/fs.h>
#define DEVCG_ACC_MKNOD 1
#define DEVCG_ACC_READ 2
#define DEVCG_ACC_WRITE 4
#define DEVCG_ACC_MASK (DEVCG_ACC_MKNOD | DEVCG_ACC_READ | DEVCG_ACC_WRITE)
#define DEVCG_DEV_BLOCK 1
#define DEVCG_DEV_CHAR 2
#define DEVCG_DEV_ALL 4 /* this represents all devices */
#if defined(CONFIG_CGROUP_DEVICE) || defined(CONFIG_CGROUP_BPF)
int devcgroup_check_permission(short type, u32 major, u32 minor,
short access);
static inline int devcgroup_inode_permission(struct inode *inode, int mask)
{
short type, access = 0;
if (likely(!S_ISBLK(inode->i_mode) && !S_ISCHR(inode->i_mode)))
return 0;
if (likely(!inode->i_rdev))
return 0;
if (S_ISBLK(inode->i_mode))
type = DEVCG_DEV_BLOCK;
else /* S_ISCHR by the test above */
type = DEVCG_DEV_CHAR;
if (mask & MAY_WRITE)
access |= DEVCG_ACC_WRITE;
if (mask & MAY_READ)
access |= DEVCG_ACC_READ;
return devcgroup_check_permission(type, imajor(inode), iminor(inode),
access);
}
static inline int devcgroup_inode_mknod(int mode, dev_t dev)
{
short type;
if (!S_ISBLK(mode) && !S_ISCHR(mode))
return 0;
if (S_ISCHR(mode) && dev == WHITEOUT_DEV)
return 0;
if (S_ISBLK(mode))
type = DEVCG_DEV_BLOCK;
else
type = DEVCG_DEV_CHAR;
return devcgroup_check_permission(type, MAJOR(dev), MINOR(dev),
DEVCG_ACC_MKNOD);
}
#else
static inline int devcgroup_check_permission(short type, u32 major, u32 minor,
short access)
{ return 0; }
static inline int devcgroup_inode_permission(struct inode *inode, int mask)
{ return 0; }
static inline int devcgroup_inode_mknod(int mode, dev_t dev)
{ return 0; }
#endif