1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * fs/verity/init.c: fs-verity module initialization and logging
4 *
5 * Copyright 2019 Google LLC
6 */
7
8 #include "fsverity_private.h"
9
10 #include <linux/ratelimit.h>
11
fsverity_msg(const struct inode * inode,const char * level,const char * fmt,...)12 void fsverity_msg(const struct inode *inode, const char *level,
13 const char *fmt, ...)
14 {
15 static DEFINE_RATELIMIT_STATE(rs, DEFAULT_RATELIMIT_INTERVAL,
16 DEFAULT_RATELIMIT_BURST);
17 struct va_format vaf;
18 va_list args;
19
20 if (!__ratelimit(&rs))
21 return;
22
23 va_start(args, fmt);
24 vaf.fmt = fmt;
25 vaf.va = &args;
26 if (inode)
27 printk("%sfs-verity (%s, inode %lu): %pV\n",
28 level, inode->i_sb->s_id, inode->i_ino, &vaf);
29 else
30 printk("%sfs-verity: %pV\n", level, &vaf);
31 va_end(args);
32 }
33
fsverity_init(void)34 static int __init fsverity_init(void)
35 {
36 int err;
37
38 fsverity_check_hash_algs();
39
40 err = fsverity_init_info_cache();
41 if (err)
42 return err;
43
44 err = fsverity_init_workqueue();
45 if (err)
46 goto err_exit_info_cache;
47
48 err = fsverity_init_signature();
49 if (err)
50 goto err_exit_workqueue;
51
52 pr_debug("Initialized fs-verity\n");
53 return 0;
54
55 err_exit_workqueue:
56 fsverity_exit_workqueue();
57 err_exit_info_cache:
58 fsverity_exit_info_cache();
59 return err;
60 }
61 late_initcall(fsverity_init)
62