^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * linux/fs/affs/inode.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * (c) 1996 Hans-Joachim Widmaier - Rewritten
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * (C) 1993 Ray Burr - Modified for Amiga FFS filesystem.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) * (C) 1992 Eric Youngdale Modified for ISO 9660 filesystem.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) * (C) 1991 Linus Torvalds - minix filesystem
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/statfs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/parser.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <linux/magic.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <linux/sched.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <linux/cred.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #include <linux/writeback.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #include <linux/blkdev.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #include <linux/seq_file.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #include <linux/iversion.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #include "affs.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) static int affs_statfs(struct dentry *dentry, struct kstatfs *buf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) static int affs_show_options(struct seq_file *m, struct dentry *root);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) static int affs_remount (struct super_block *sb, int *flags, char *data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) affs_commit_super(struct super_block *sb, int wait)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) struct affs_sb_info *sbi = AFFS_SB(sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) struct buffer_head *bh = sbi->s_root_bh;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) struct affs_root_tail *tail = AFFS_ROOT_TAIL(sb, bh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) lock_buffer(bh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) affs_secs_to_datestamp(ktime_get_real_seconds(), &tail->disk_change);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) affs_fix_checksum(sb, bh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) unlock_buffer(bh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) mark_buffer_dirty(bh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) if (wait)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) sync_dirty_buffer(bh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) affs_put_super(struct super_block *sb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) struct affs_sb_info *sbi = AFFS_SB(sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) pr_debug("%s()\n", __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) cancel_delayed_work_sync(&sbi->sb_work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) affs_sync_fs(struct super_block *sb, int wait)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) affs_commit_super(sb, wait);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) static void flush_superblock(struct work_struct *work)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) struct affs_sb_info *sbi;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) struct super_block *sb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) sbi = container_of(work, struct affs_sb_info, sb_work.work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) sb = sbi->sb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) spin_lock(&sbi->work_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) sbi->work_queued = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) spin_unlock(&sbi->work_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) affs_commit_super(sb, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) void affs_mark_sb_dirty(struct super_block *sb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) struct affs_sb_info *sbi = AFFS_SB(sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) unsigned long delay;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) if (sb_rdonly(sb))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) spin_lock(&sbi->work_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) if (!sbi->work_queued) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) delay = msecs_to_jiffies(dirty_writeback_interval * 10);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) queue_delayed_work(system_long_wq, &sbi->sb_work, delay);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) sbi->work_queued = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) spin_unlock(&sbi->work_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) static struct kmem_cache * affs_inode_cachep;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) static struct inode *affs_alloc_inode(struct super_block *sb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) struct affs_inode_info *i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) i = kmem_cache_alloc(affs_inode_cachep, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) if (!i)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) inode_set_iversion(&i->vfs_inode, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) i->i_lc = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) i->i_ext_bh = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) i->i_pa_cnt = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) return &i->vfs_inode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) static void affs_free_inode(struct inode *inode)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) kmem_cache_free(affs_inode_cachep, AFFS_I(inode));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) static void init_once(void *foo)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) struct affs_inode_info *ei = (struct affs_inode_info *) foo;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) mutex_init(&ei->i_link_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) mutex_init(&ei->i_ext_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) inode_init_once(&ei->vfs_inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) static int __init init_inodecache(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) affs_inode_cachep = kmem_cache_create("affs_inode_cache",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) sizeof(struct affs_inode_info),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) 0, (SLAB_RECLAIM_ACCOUNT|
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) SLAB_MEM_SPREAD|SLAB_ACCOUNT),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) init_once);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) if (affs_inode_cachep == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) static void destroy_inodecache(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) * Make sure all delayed rcu free inodes are flushed before we
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) * destroy cache.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) rcu_barrier();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) kmem_cache_destroy(affs_inode_cachep);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) static const struct super_operations affs_sops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) .alloc_inode = affs_alloc_inode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) .free_inode = affs_free_inode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) .write_inode = affs_write_inode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) .evict_inode = affs_evict_inode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) .put_super = affs_put_super,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) .sync_fs = affs_sync_fs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) .statfs = affs_statfs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) .remount_fs = affs_remount,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) .show_options = affs_show_options,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) enum {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) Opt_bs, Opt_mode, Opt_mufs, Opt_notruncate, Opt_prefix, Opt_protect,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) Opt_reserved, Opt_root, Opt_setgid, Opt_setuid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) Opt_verbose, Opt_volume, Opt_ignore, Opt_err,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) static const match_table_t tokens = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) {Opt_bs, "bs=%u"},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) {Opt_mode, "mode=%o"},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) {Opt_mufs, "mufs"},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) {Opt_notruncate, "nofilenametruncate"},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) {Opt_prefix, "prefix=%s"},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) {Opt_protect, "protect"},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) {Opt_reserved, "reserved=%u"},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) {Opt_root, "root=%u"},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) {Opt_setgid, "setgid=%u"},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) {Opt_setuid, "setuid=%u"},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) {Opt_verbose, "verbose"},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) {Opt_volume, "volume=%s"},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) {Opt_ignore, "grpquota"},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) {Opt_ignore, "noquota"},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) {Opt_ignore, "quota"},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) {Opt_ignore, "usrquota"},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) {Opt_err, NULL},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) parse_options(char *options, kuid_t *uid, kgid_t *gid, int *mode, int *reserved, s32 *root,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) int *blocksize, char **prefix, char *volume, unsigned long *mount_opts)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) char *p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) substring_t args[MAX_OPT_ARGS];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) /* Fill in defaults */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) *uid = current_uid();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) *gid = current_gid();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) *reserved = 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) *root = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) *blocksize = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) volume[0] = ':';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) volume[1] = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) *mount_opts = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) if (!options)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) while ((p = strsep(&options, ",")) != NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) int token, n, option;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) if (!*p)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) token = match_token(p, tokens, args);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) switch (token) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) case Opt_bs:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) if (match_int(&args[0], &n))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) if (n != 512 && n != 1024 && n != 2048
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) && n != 4096) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) pr_warn("Invalid blocksize (512, 1024, 2048, 4096 allowed)\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) *blocksize = n;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) case Opt_mode:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) if (match_octal(&args[0], &option))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) *mode = option & 0777;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) affs_set_opt(*mount_opts, SF_SETMODE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) case Opt_mufs:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) affs_set_opt(*mount_opts, SF_MUFS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) case Opt_notruncate:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) affs_set_opt(*mount_opts, SF_NO_TRUNCATE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) case Opt_prefix:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) kfree(*prefix);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) *prefix = match_strdup(&args[0]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) if (!*prefix)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) affs_set_opt(*mount_opts, SF_PREFIX);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) case Opt_protect:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) affs_set_opt(*mount_opts, SF_IMMUTABLE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) case Opt_reserved:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) if (match_int(&args[0], reserved))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) case Opt_root:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) if (match_int(&args[0], root))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) case Opt_setgid:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) if (match_int(&args[0], &option))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) *gid = make_kgid(current_user_ns(), option);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) if (!gid_valid(*gid))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) affs_set_opt(*mount_opts, SF_SETGID);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) case Opt_setuid:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) if (match_int(&args[0], &option))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) *uid = make_kuid(current_user_ns(), option);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) if (!uid_valid(*uid))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) affs_set_opt(*mount_opts, SF_SETUID);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) case Opt_verbose:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) affs_set_opt(*mount_opts, SF_VERBOSE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) case Opt_volume: {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) char *vol = match_strdup(&args[0]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) if (!vol)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) strlcpy(volume, vol, 32);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) kfree(vol);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) case Opt_ignore:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) /* Silently ignore the quota options */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) pr_warn("Unrecognized mount option \"%s\" or missing value\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) p);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) static int affs_show_options(struct seq_file *m, struct dentry *root)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) struct super_block *sb = root->d_sb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) struct affs_sb_info *sbi = AFFS_SB(sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) if (sb->s_blocksize)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) seq_printf(m, ",bs=%lu", sb->s_blocksize);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) if (affs_test_opt(sbi->s_flags, SF_SETMODE))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) seq_printf(m, ",mode=%o", sbi->s_mode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) if (affs_test_opt(sbi->s_flags, SF_MUFS))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) seq_puts(m, ",mufs");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) if (affs_test_opt(sbi->s_flags, SF_NO_TRUNCATE))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) seq_puts(m, ",nofilenametruncate");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) if (affs_test_opt(sbi->s_flags, SF_PREFIX))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) seq_printf(m, ",prefix=%s", sbi->s_prefix);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) if (affs_test_opt(sbi->s_flags, SF_IMMUTABLE))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) seq_puts(m, ",protect");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) if (sbi->s_reserved != 2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) seq_printf(m, ",reserved=%u", sbi->s_reserved);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) if (sbi->s_root_block != (sbi->s_reserved + sbi->s_partition_size - 1) / 2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) seq_printf(m, ",root=%u", sbi->s_root_block);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) if (affs_test_opt(sbi->s_flags, SF_SETGID))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) seq_printf(m, ",setgid=%u",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) from_kgid_munged(&init_user_ns, sbi->s_gid));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) if (affs_test_opt(sbi->s_flags, SF_SETUID))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) seq_printf(m, ",setuid=%u",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) from_kuid_munged(&init_user_ns, sbi->s_uid));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) if (affs_test_opt(sbi->s_flags, SF_VERBOSE))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) seq_puts(m, ",verbose");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) if (sbi->s_volume[0])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) seq_printf(m, ",volume=%s", sbi->s_volume);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) /* This function definitely needs to be split up. Some fine day I'll
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) * hopefully have the guts to do so. Until then: sorry for the mess.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) static int affs_fill_super(struct super_block *sb, void *data, int silent)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) struct affs_sb_info *sbi;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) struct buffer_head *root_bh = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) struct buffer_head *boot_bh;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) struct inode *root_inode = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) s32 root_block;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) int size, blocksize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) u32 chksum;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) int num_bm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) int i, j;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) kuid_t uid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) kgid_t gid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) int reserved;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) unsigned long mount_flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) int tmp_flags; /* fix remount prototype... */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) u8 sig[4];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) pr_debug("read_super(%s)\n", data ? (const char *)data : "no options");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) sb->s_magic = AFFS_SUPER_MAGIC;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) sb->s_op = &affs_sops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) sb->s_flags |= SB_NODIRATIME;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) sb->s_time_gran = NSEC_PER_SEC;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) sb->s_time_min = sys_tz.tz_minuteswest * 60 + AFFS_EPOCH_DELTA;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) sb->s_time_max = 86400LL * U32_MAX + 86400 + sb->s_time_min;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) sbi = kzalloc(sizeof(struct affs_sb_info), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) if (!sbi)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) sb->s_fs_info = sbi;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) sbi->sb = sb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) mutex_init(&sbi->s_bmlock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) spin_lock_init(&sbi->symlink_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) spin_lock_init(&sbi->work_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) INIT_DELAYED_WORK(&sbi->sb_work, flush_superblock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) if (!parse_options(data,&uid,&gid,&i,&reserved,&root_block,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) &blocksize,&sbi->s_prefix,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) sbi->s_volume, &mount_flags)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) pr_err("Error parsing options\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) /* N.B. after this point s_prefix must be released */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) sbi->s_flags = mount_flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) sbi->s_mode = i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) sbi->s_uid = uid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) sbi->s_gid = gid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) sbi->s_reserved= reserved;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) /* Get the size of the device in 512-byte blocks.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) * If we later see that the partition uses bigger
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) * blocks, we will have to change it.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) size = i_size_read(sb->s_bdev->bd_inode) >> 9;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) pr_debug("initial blocksize=%d, #blocks=%d\n", 512, size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) affs_set_blocksize(sb, PAGE_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) /* Try to find root block. Its location depends on the block size. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) i = bdev_logical_block_size(sb->s_bdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) j = PAGE_SIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) if (blocksize > 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) i = j = blocksize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) size = size / (blocksize / 512);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) for (blocksize = i; blocksize <= j; blocksize <<= 1, size >>= 1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) sbi->s_root_block = root_block;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) if (root_block < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) sbi->s_root_block = (reserved + size - 1) / 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) pr_debug("setting blocksize to %d\n", blocksize);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) affs_set_blocksize(sb, blocksize);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) sbi->s_partition_size = size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) /* The root block location that was calculated above is not
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) * correct if the partition size is an odd number of 512-
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) * byte blocks, which will be rounded down to a number of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) * 1024-byte blocks, and if there were an even number of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) * reserved blocks. Ideally, all partition checkers should
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) * report the real number of blocks of the real blocksize,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) * but since this just cannot be done, we have to try to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) * find the root block anyways. In the above case, it is one
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) * block behind the calculated one. So we check this one, too.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) for (num_bm = 0; num_bm < 2; num_bm++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) pr_debug("Dev %s, trying root=%u, bs=%d, "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) "size=%d, reserved=%d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) sb->s_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) sbi->s_root_block + num_bm,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) blocksize, size, reserved);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) root_bh = affs_bread(sb, sbi->s_root_block + num_bm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) if (!root_bh)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) if (!affs_checksum_block(sb, root_bh) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) be32_to_cpu(AFFS_ROOT_HEAD(root_bh)->ptype) == T_SHORT &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) be32_to_cpu(AFFS_ROOT_TAIL(sb, root_bh)->stype) == ST_ROOT) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) sbi->s_hashsize = blocksize / 4 - 56;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) sbi->s_root_block += num_bm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) goto got_root;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) affs_brelse(root_bh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) root_bh = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) if (!silent)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) pr_err("No valid root block on device %s\n", sb->s_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) /* N.B. after this point bh must be released */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) got_root:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) /* Keep super block in cache */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) sbi->s_root_bh = root_bh;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) root_block = sbi->s_root_block;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) /* Find out which kind of FS we have */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) boot_bh = sb_bread(sb, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) if (!boot_bh) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) pr_err("Cannot read boot block\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) memcpy(sig, boot_bh->b_data, 4);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) brelse(boot_bh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) chksum = be32_to_cpu(*(__be32 *)sig);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) /* Dircache filesystems are compatible with non-dircache ones
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) * when reading. As long as they aren't supported, writing is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) * not recommended.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) if ((chksum == FS_DCFFS || chksum == MUFS_DCFFS || chksum == FS_DCOFS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) || chksum == MUFS_DCOFS) && !sb_rdonly(sb)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) pr_notice("Dircache FS - mounting %s read only\n", sb->s_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) sb->s_flags |= SB_RDONLY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) switch (chksum) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) case MUFS_FS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) case MUFS_INTLFFS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) case MUFS_DCFFS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) affs_set_opt(sbi->s_flags, SF_MUFS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) fallthrough;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) case FS_INTLFFS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) case FS_DCFFS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) affs_set_opt(sbi->s_flags, SF_INTL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) case MUFS_FFS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) affs_set_opt(sbi->s_flags, SF_MUFS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) case FS_FFS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) case MUFS_OFS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) affs_set_opt(sbi->s_flags, SF_MUFS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) fallthrough;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) case FS_OFS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) affs_set_opt(sbi->s_flags, SF_OFS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492) sb->s_flags |= SB_NOEXEC;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) case MUFS_DCOFS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) case MUFS_INTLOFS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) affs_set_opt(sbi->s_flags, SF_MUFS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) fallthrough;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) case FS_DCOFS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) case FS_INTLOFS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) affs_set_opt(sbi->s_flags, SF_INTL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) affs_set_opt(sbi->s_flags, SF_OFS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) sb->s_flags |= SB_NOEXEC;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) pr_err("Unknown filesystem on device %s: %08X\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) sb->s_id, chksum);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510) if (affs_test_opt(mount_flags, SF_VERBOSE)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) u8 len = AFFS_ROOT_TAIL(sb, root_bh)->disk_name[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) pr_notice("Mounting volume \"%.*s\": Type=%.3s\\%c, Blocksize=%d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513) len > 31 ? 31 : len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514) AFFS_ROOT_TAIL(sb, root_bh)->disk_name + 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) sig, sig[3] + '0', blocksize);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) sb->s_flags |= SB_NODEV | SB_NOSUID;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520) sbi->s_data_blksize = sb->s_blocksize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) if (affs_test_opt(sbi->s_flags, SF_OFS))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) sbi->s_data_blksize -= 24;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524) tmp_flags = sb->s_flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525) ret = affs_init_bitmap(sb, &tmp_flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528) sb->s_flags = tmp_flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) /* set up enough so that it can read an inode */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) root_inode = affs_iget(sb, root_block);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533) if (IS_ERR(root_inode))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534) return PTR_ERR(root_inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) if (affs_test_opt(AFFS_SB(sb)->s_flags, SF_INTL))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537) sb->s_d_op = &affs_intl_dentry_operations;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539) sb->s_d_op = &affs_dentry_operations;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541) sb->s_root = d_make_root(root_inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542) if (!sb->s_root) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543) pr_err("AFFS: Get root inode failed\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547) sb->s_export_op = &affs_export_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548) pr_debug("s_flags=%lX\n", sb->s_flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553) affs_remount(struct super_block *sb, int *flags, char *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555) struct affs_sb_info *sbi = AFFS_SB(sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556) int blocksize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557) kuid_t uid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558) kgid_t gid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559) int mode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560) int reserved;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561) int root_block;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562) unsigned long mount_flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563) int res = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564) char volume[32];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565) char *prefix = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567) pr_debug("%s(flags=0x%x,opts=\"%s\")\n", __func__, *flags, data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569) sync_filesystem(sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570) *flags |= SB_NODIRATIME;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572) memcpy(volume, sbi->s_volume, 32);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573) if (!parse_options(data, &uid, &gid, &mode, &reserved, &root_block,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574) &blocksize, &prefix, volume,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575) &mount_flags)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576) kfree(prefix);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580) flush_delayed_work(&sbi->sb_work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582) sbi->s_flags = mount_flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583) sbi->s_mode = mode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584) sbi->s_uid = uid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585) sbi->s_gid = gid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586) /* protect against readers */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 587) spin_lock(&sbi->symlink_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 588) if (prefix) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 589) kfree(sbi->s_prefix);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 590) sbi->s_prefix = prefix;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 591) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 592) memcpy(sbi->s_volume, volume, 32);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 593) spin_unlock(&sbi->symlink_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 594)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 595) if ((bool)(*flags & SB_RDONLY) == sb_rdonly(sb))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 596) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 597)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 598) if (*flags & SB_RDONLY)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 599) affs_free_bitmap(sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 600) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 601) res = affs_init_bitmap(sb, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 602)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 603) return res;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 604) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 605)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 606) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 607) affs_statfs(struct dentry *dentry, struct kstatfs *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 608) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 609) struct super_block *sb = dentry->d_sb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 610) int free;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 611) u64 id = huge_encode_dev(sb->s_bdev->bd_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 612)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 613) pr_debug("%s() partsize=%d, reserved=%d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 614) __func__, AFFS_SB(sb)->s_partition_size,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 615) AFFS_SB(sb)->s_reserved);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 616)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 617) free = affs_count_free_blocks(sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 618) buf->f_type = AFFS_SUPER_MAGIC;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 619) buf->f_bsize = sb->s_blocksize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 620) buf->f_blocks = AFFS_SB(sb)->s_partition_size - AFFS_SB(sb)->s_reserved;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 621) buf->f_bfree = free;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 622) buf->f_bavail = free;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 623) buf->f_fsid = u64_to_fsid(id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 624) buf->f_namelen = AFFSNAMEMAX;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 625) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 626) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 627)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 628) static struct dentry *affs_mount(struct file_system_type *fs_type,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 629) int flags, const char *dev_name, void *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 630) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 631) return mount_bdev(fs_type, flags, dev_name, data, affs_fill_super);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 632) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 633)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 634) static void affs_kill_sb(struct super_block *sb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 635) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 636) struct affs_sb_info *sbi = AFFS_SB(sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 637) kill_block_super(sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 638) if (sbi) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 639) affs_free_bitmap(sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 640) affs_brelse(sbi->s_root_bh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 641) kfree(sbi->s_prefix);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 642) mutex_destroy(&sbi->s_bmlock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 643) kfree(sbi);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 644) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 645) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 646)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 647) static struct file_system_type affs_fs_type = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 648) .owner = THIS_MODULE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 649) .name = "affs",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 650) .mount = affs_mount,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 651) .kill_sb = affs_kill_sb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 652) .fs_flags = FS_REQUIRES_DEV,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 653) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 654) MODULE_ALIAS_FS("affs");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 655)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 656) static int __init init_affs_fs(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 657) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 658) int err = init_inodecache();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 659) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 660) goto out1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 661) err = register_filesystem(&affs_fs_type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 662) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 663) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 664) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 665) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 666) destroy_inodecache();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 667) out1:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 668) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 669) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 670)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 671) static void __exit exit_affs_fs(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 672) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 673) unregister_filesystem(&affs_fs_type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 674) destroy_inodecache();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 675) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 676)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 677) MODULE_DESCRIPTION("Amiga filesystem support for Linux");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 678) MODULE_LICENSE("GPL");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 679) MODULE_IMPORT_NS(ANDROID_GKI_VFS_EXPORT_ONLY);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 680)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 681) module_init(init_affs_fs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 682) module_exit(exit_affs_fs)
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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