include/linux/device_cgroup.h at v4.14 · tjh.dev/kernel

tjh.dev / kernel

Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git

kernel os linux

kernel / include / linux / device_cgroup.h

at v4.14 636 B view raw

 1/* SPDX-License-Identifier: GPL-2.0 */
 2#include <linux/fs.h>
 3
 4#ifdef CONFIG_CGROUP_DEVICE
 5extern int __devcgroup_inode_permission(struct inode *inode, int mask);
 6extern int devcgroup_inode_mknod(int mode, dev_t dev);
 7static inline int devcgroup_inode_permission(struct inode *inode, int mask)
 8{
 9	if (likely(!inode->i_rdev))
10		return 0;
11	if (!S_ISBLK(inode->i_mode) && !S_ISCHR(inode->i_mode))
12		return 0;
13	return __devcgroup_inode_permission(inode, mask);
14}
15#else
16static inline int devcgroup_inode_permission(struct inode *inode, int mask)
17{ return 0; }
18static inline int devcgroup_inode_mknod(int mode, dev_t dev)
19{ return 0; }
20#endif