1/* PR rtl-optimization/45593 */
2/* Testcase by Arnaud Lacombe <lacombar@gmail.com> */
3
4typedef unsigned int __u32;
5typedef __u32 __be32;
6static inline __attribute__((always_inline)) int __attribute__((__cold__)) printk(const char *s, ...) { return 0; }
7typedef struct journal_s journal_t;
8typedef struct journal_header_s
9{
10 __be32 h_magic;
11 __be32 h_blocktype;
12 __be32 h_sequence;
13} journal_header_t;
14typedef struct journal_superblock_s
15{
16 journal_header_t s_header;
17 __be32 s_blocksize;
18 __be32 s_maxlen;
19} journal_superblock_t;
20struct journal_s
21{
22 struct buffer_head *j_sb_buffer;
23 journal_superblock_t *j_superblock;
24 int j_format_version;
25 int j_blocksize;
26 unsigned int j_maxlen;
27};
28static void journal_fail_superblock (journal_t *journal)
29{
30 journal->j_sb_buffer = ((void *)0);
31}
32static int journal_get_superblock(journal_t *journal)
33{
34 struct buffer_head *bh;
35 journal_superblock_t *sb;
36 int err = -100;
37 bh = journal->j_sb_buffer;
38 if (!buffer_uptodate(bh)) {
39  if (!buffer_uptodate(bh)) {
40   printk ("JBD: IO error reading journal superblock\n");
41   goto out;
42  }
43 }
44 err = -101;
45 if (sb->s_header.h_magic != (( __be32)(__u32)(0)) ||
46     sb->s_blocksize != (( __be32)(__u32)(journal->j_blocksize))) {
47  printk("JBD: no valid journal superblock found\n");
48  goto out;
49 }
50 switch((( __u32)(__be32)(sb->s_header.h_blocktype))) {
51 case 0:
52 case 1:
53  break;
54 default:
55  goto out;
56 }
57 if ((( __u32)(__be32)(sb->s_maxlen)) < journal->j_maxlen)
58  journal->j_maxlen = (( __u32)(__be32)(sb->s_maxlen));
59 else if ((( __u32)(__be32)(sb->s_maxlen)) > journal->j_maxlen) {
60  printk ("JBD: journal file too short\n");
61  goto out;
62 }
63 return 0;
64out:
65 journal_fail_superblock(journal);
66 return err;
67}
68static int load_superblock(journal_t *journal)
69{
70 journal_get_superblock(journal);
71 return 0;
72}
73int jbd2_journal_update_format (journal_t *journal)
74{
75 journal_get_superblock(journal);
76 return 0;
77}
78int jbd2_journal_wipe(journal_t *journal, int write)
79{
80 load_superblock(journal);
81 return 0;
82}
83