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git.proxmox.com Git - mirror_ubuntu-jammy-kernel.git/blob - include/linux/device_cgroup.h
1 /* SPDX-License-Identifier: GPL-2.0 */
4 #define DEVCG_ACC_MKNOD 1
5 #define DEVCG_ACC_READ 2
6 #define DEVCG_ACC_WRITE 4
7 #define DEVCG_ACC_MASK (DEVCG_ACC_MKNOD | DEVCG_ACC_READ | DEVCG_ACC_WRITE)
9 #define DEVCG_DEV_BLOCK 1
10 #define DEVCG_DEV_CHAR 2
11 #define DEVCG_DEV_ALL 4 /* this represents all devices */
14 #if defined(CONFIG_CGROUP_DEVICE) || defined(CONFIG_CGROUP_BPF)
15 int devcgroup_check_permission(short type
, u32 major
, u32 minor
,
17 static inline int devcgroup_inode_permission(struct inode
*inode
, int mask
)
19 short type
, access
= 0;
21 if (likely(!inode
->i_rdev
))
24 if (S_ISBLK(inode
->i_mode
))
25 type
= DEVCG_DEV_BLOCK
;
26 else if (S_ISCHR(inode
->i_mode
))
27 type
= DEVCG_DEV_CHAR
;
32 access
|= DEVCG_ACC_WRITE
;
34 access
|= DEVCG_ACC_READ
;
36 return devcgroup_check_permission(type
, imajor(inode
), iminor(inode
),
40 static inline int devcgroup_inode_mknod(int mode
, dev_t dev
)
44 if (!S_ISBLK(mode
) && !S_ISCHR(mode
))
47 if (S_ISCHR(mode
) && dev
== WHITEOUT_DEV
)
51 type
= DEVCG_DEV_BLOCK
;
53 type
= DEVCG_DEV_CHAR
;
55 return devcgroup_check_permission(type
, MAJOR(dev
), MINOR(dev
),
60 static inline int devcgroup_check_permission(short type
, u32 major
, u32 minor
,
63 static inline int devcgroup_inode_permission(struct inode
*inode
, int mask
)
65 static inline int devcgroup_inode_mknod(int mode
, dev_t dev
)