cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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acl.h (1625B)

      1// SPDX-License-Identifier: GPL-2.0
      2/*
      3  File: fs/ext4/acl.h
      4
      5  (C) 2001 Andreas Gruenbacher, <a.gruenbacher@computer.org>
      6*/
      7
      8#include <linux/posix_acl_xattr.h>
      9
     10#define EXT4_ACL_VERSION	0x0001
     11
     12typedef struct {
     13	__le16		e_tag;
     14	__le16		e_perm;
     15	__le32		e_id;
     16} ext4_acl_entry;
     17
     18typedef struct {
     19	__le16		e_tag;
     20	__le16		e_perm;
     21} ext4_acl_entry_short;
     22
     23typedef struct {
     24	__le32		a_version;
     25} ext4_acl_header;
     26
     27static inline size_t ext4_acl_size(int count)
     28{
     29	if (count <= 4) {
     30		return sizeof(ext4_acl_header) +
     31		       count * sizeof(ext4_acl_entry_short);
     32	} else {
     33		return sizeof(ext4_acl_header) +
     34		       4 * sizeof(ext4_acl_entry_short) +
     35		       (count - 4) * sizeof(ext4_acl_entry);
     36	}
     37}
     38
     39static inline int ext4_acl_count(size_t size)
     40{
     41	ssize_t s;
     42	size -= sizeof(ext4_acl_header);
     43	s = size - 4 * sizeof(ext4_acl_entry_short);
     44	if (s < 0) {
     45		if (size % sizeof(ext4_acl_entry_short))
     46			return -1;
     47		return size / sizeof(ext4_acl_entry_short);
     48	} else {
     49		if (s % sizeof(ext4_acl_entry))
     50			return -1;
     51		return s / sizeof(ext4_acl_entry) + 4;
     52	}
     53}
     54
     55#ifdef CONFIG_EXT4_FS_POSIX_ACL
     56
     57/* acl.c */
     58struct posix_acl *ext4_get_acl(struct inode *inode, int type, bool rcu);
     59int ext4_set_acl(struct user_namespace *mnt_userns, struct inode *inode,
     60		 struct posix_acl *acl, int type);
     61extern int ext4_init_acl(handle_t *, struct inode *, struct inode *);
     62
     63#else  /* CONFIG_EXT4_FS_POSIX_ACL */
     64#include <linux/sched.h>
     65#define ext4_get_acl NULL
     66#define ext4_set_acl NULL
     67
     68static inline int
     69ext4_init_acl(handle_t *handle, struct inode *inode, struct inode *dir)
     70{
     71	return 0;
     72}
     73#endif  /* CONFIG_EXT4_FS_POSIX_ACL */
     74