int __init sysaufs_init(void)
{
int err;
do {
get_random_bytes(&sysaufs_si_mask, sizeof(sysaufs_si_mask));
} while (!sysaufs_si_mask);
err = -EINVAL;
sysaufs_kset = kset_create_and_add(AUFS_NAME, NULL, fs_kobj);
if (unlikely(!sysaufs_kset))
goto out;
err = PTR_ERR(sysaufs_kset);
if (IS_ERR(sysaufs_kset))
goto out;
err = sysfs_create_group(&sysaufs_kset->kobj, sysaufs_attr_group);
if (unlikely(err)) {
kset_unregister(sysaufs_kset);
goto out;
}
err = dbgaufs_init();
if (unlikely(err))
sysaufs_fin();
out:
return err;
}
static int __init aufs_init(void)
{
int err, i;
char *p;
p = au_esc_chars;
for (i = 1; i <= ' '; i++)
*p++ = i;
*p++ = '\\';
*p++ = '\x7f';
*p = 0;
au_dir_roflags = au_file_roflags(O_DIRECTORY | O_LARGEFILE);
au_sbilist_init();
sysaufs_brs_init();
au_debug_init();
au_dy_init();
err = sysaufs_init();
if (unlikely(err))
goto out;
err = au_procfs_init();
if (unlikely(err))
goto out_sysaufs;
err = au_wkq_init();
if (unlikely(err))
goto out_procfs;
err = au_hnotify_init();
if (unlikely(err))
goto out_wkq;
err = au_sysrq_init();
if (unlikely(err))
goto out_hin;
err = au_cache_init();
if (unlikely(err))
goto out_sysrq;
err = register_filesystem(&aufs_fs_type);
if (unlikely(err))
goto out_cache;
/* since we define pr_fmt, call printk directly */
printk(KERN_INFO AUFS_NAME " " AUFS_VERSION "\n");
goto out; /* success */
out_cache:
au_cache_fin();
out_sysrq:
au_sysrq_fin();
out_hin:
au_hnotify_fin();
out_wkq:
au_wkq_fin();
out_procfs:
au_procfs_fin();
out_sysaufs:
sysaufs_fin();
au_dy_fin();
out:
return err;
}
static void __exit aufs_exit(void)
{
unregister_filesystem(&aufs_fs_type);
au_cache_fin();
au_sysrq_fin();
au_hinotify_fin();
au_wkq_fin();
sysaufs_fin();
}
static void __exit aufs_exit(void)
{
unregister_filesystem(&aufs_fs_type);
au_cache_fin();
au_sysrq_fin();
au_hnotify_fin();
au_loopback_fin();
au_wkq_fin();
au_procfs_fin();
sysaufs_fin();
au_dy_fin();
}
static int __init aufs_init(void)
{
int err, i;
char *p;
au_debug_init();
#ifdef CONFIG_AUFS_INO_T_64
BUILD_BUG_ON(sizeof(ino_t) != sizeof(long long));
#else
BUILD_BUG_ON(sizeof(ino_t) != sizeof(int));
#endif
p = au_esc_chars;
for (i = 1; i <= ' '; i++)
*p++ = i;
*p++ = '\\';
*p++ = '\x7f';
*p = 0;
au_dir_roflags = au_file_roflags(O_DIRECTORY | O_LARGEFILE);
err = -EINVAL;
if (unlikely(aufs_nwkq <= 0))
goto out;
err = sysaufs_init();
if (unlikely(err))
goto out;
err = au_wkq_init();
if (unlikely(err))
goto out_sysaufs;
err = au_inotify_init();
if (unlikely(err))
goto out_wkq;
err = au_sysrq_init();
if (unlikely(err))
goto out_inotify;
err = create_cache();
if (unlikely(err))
goto out_sysrq;
err = register_filesystem(&aufs_fs_type);
if (unlikely(err))
goto out_cache;
pr_info(AUFS_NAME " " AUFS_VERSION "\n");
return 0; /* success */
out_cache:
destroy_cache();
out_sysrq:
au_sysrq_fin();
out_inotify:
au_inotify_fin();
out_wkq:
au_wkq_fin();
out_sysaufs:
sysaufs_fin();
out:
AuTraceErr(err);
return err;
}