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/* PR rtl-optimization/45593 */
/* Testcase by Arnaud Lacombe <lacombar@gmail.com> */
typedef unsigned int __u32;
typedef __u32 __be32;
static inline __attribute__((always_inline)) int __attribute__((__cold__)) printk(const char *s, ...) { return 0; }
typedef struct journal_s journal_t;
typedef struct journal_header_s
{
__be32 h_magic;
__be32 h_blocktype;
__be32 h_sequence;
} journal_header_t;
typedef struct journal_superblock_s
{
journal_header_t s_header;
__be32 s_blocksize;
__be32 s_maxlen;
} journal_superblock_t;
struct journal_s
{
struct buffer_head *j_sb_buffer;
journal_superblock_t *j_superblock;
int j_format_version;
int j_blocksize;
unsigned int j_maxlen;
};
static void journal_fail_superblock (journal_t *journal)
{
journal->j_sb_buffer = ((void *)0);
}
static int journal_get_superblock(journal_t *journal)
{
struct buffer_head *bh;
journal_superblock_t *sb;
int err = -100;
bh = journal->j_sb_buffer;
if (!buffer_uptodate(bh)) {
if (!buffer_uptodate(bh)) {
printk ("JBD: IO error reading journal superblock\n");
goto out;
}
}
err = -101;
if (sb->s_header.h_magic != (( __be32)(__u32)(0)) ||
sb->s_blocksize != (( __be32)(__u32)(journal->j_blocksize))) {
printk("JBD: no valid journal superblock found\n");
goto out;
}
switch((( __u32)(__be32)(sb->s_header.h_blocktype))) {
case 0:
case 1:
break;
default:
goto out;
}
if ((( __u32)(__be32)(sb->s_maxlen)) < journal->j_maxlen)
journal->j_maxlen = (( __u32)(__be32)(sb->s_maxlen));
else if ((( __u32)(__be32)(sb->s_maxlen)) > journal->j_maxlen) {
printk ("JBD: journal file too short\n");
goto out;
}
return 0;
out:
journal_fail_superblock(journal);
return err;
}
static int load_superblock(journal_t *journal)
{
journal_get_superblock(journal);
return 0;
}
int jbd2_journal_update_format (journal_t *journal)
{
journal_get_superblock(journal);
return 0;
}
int jbd2_journal_wipe(journal_t *journal, int write)
{
load_superblock(journal);
return 0;
}
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