d2912cb15bdda (Thomas Gleixner 2019-06-04 10:11:33 +0200 1) // SPDX-License-Identifier: GPL-2.0-only
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 2) /*
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 3) * linux/fs/adfs/super.c
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 4) *
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 5) * Copyright (C) 1997-1999 Russell King
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 6) */
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 7) #include <linux/module.h>
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 8) #include <linux/init.h>
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 9) #include <linux/parser.h>
e11400b0cadc9 (Miklos Szeredi 2008-02-08 04:21:35 -0800 10) #include <linux/mount.h>
e11400b0cadc9 (Miklos Szeredi 2008-02-08 04:21:35 -0800 11) #include <linux/seq_file.h>
5a0e3ad6af866 (Tejun Heo 2010-03-24 17:04:11 +0900 12) #include <linux/slab.h>
608ba50bd0225 (Al Viro 2009-06-16 14:52:13 -0400 13) #include <linux/statfs.h>
c010d1ff4f69c (Eric W. Biederman 2012-02-07 15:58:38 -0800 14) #include <linux/user_namespace.h>
621c1f42945e7 (Christoph Hellwig 2020-06-20 09:16:44 +0200 15) #include <linux/blkdev.h>
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 16) #include "adfs.h"
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 17) #include "dir_f.h"
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 18) #include "dir_fplus.h"
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 19)
421d3c0faa288 (Russell King 2019-06-04 14:50:03 +0100 20) #define ADFS_SB_FLAGS SB_NOATIME
421d3c0faa288 (Russell King 2019-06-04 14:50:03 +0100 21)
e11400b0cadc9 (Miklos Szeredi 2008-02-08 04:21:35 -0800 22) #define ADFS_DEFAULT_OWNER_MASK S_IRWXU
e11400b0cadc9 (Miklos Szeredi 2008-02-08 04:21:35 -0800 23) #define ADFS_DEFAULT_OTHER_MASK (S_IRWXG | S_IRWXO)
e11400b0cadc9 (Miklos Szeredi 2008-02-08 04:21:35 -0800 24)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 25) void __adfs_error(struct super_block *sb, const char *function, const char *fmt, ...)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 26) {
2e67080d87087 (Russell King 2019-06-04 14:49:47 +0100 27) struct va_format vaf;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 28) va_list args;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 29)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 30) va_start(args, fmt);
2e67080d87087 (Russell King 2019-06-04 14:49:47 +0100 31) vaf.fmt = fmt;
2e67080d87087 (Russell King 2019-06-04 14:49:47 +0100 32) vaf.va = &args;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 33)
2e67080d87087 (Russell King 2019-06-04 14:49:47 +0100 34) printk(KERN_CRIT "ADFS-fs error (device %s)%s%s: %pV\n",
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 35) sb->s_id, function ? ": " : "",
2e67080d87087 (Russell King 2019-06-04 14:49:47 +0100 36) function ? function : "", &vaf);
2e67080d87087 (Russell King 2019-06-04 14:49:47 +0100 37)
2e67080d87087 (Russell King 2019-06-04 14:49:47 +0100 38) va_end(args);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 39) }
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 40)
ceb3b10613eba (Russell King 2019-06-04 14:49:52 +0100 41) void adfs_msg(struct super_block *sb, const char *pfx, const char *fmt, ...)
ceb3b10613eba (Russell King 2019-06-04 14:49:52 +0100 42) {
ceb3b10613eba (Russell King 2019-06-04 14:49:52 +0100 43) struct va_format vaf;
ceb3b10613eba (Russell King 2019-06-04 14:49:52 +0100 44) va_list args;
ceb3b10613eba (Russell King 2019-06-04 14:49:52 +0100 45)
ceb3b10613eba (Russell King 2019-06-04 14:49:52 +0100 46) va_start(args, fmt);
ceb3b10613eba (Russell King 2019-06-04 14:49:52 +0100 47) vaf.fmt = fmt;
ceb3b10613eba (Russell King 2019-06-04 14:49:52 +0100 48) vaf.va = &args;
ceb3b10613eba (Russell King 2019-06-04 14:49:52 +0100 49) printk("%sADFS-fs (%s): %pV\n", pfx, sb->s_id, &vaf);
ceb3b10613eba (Russell King 2019-06-04 14:49:52 +0100 50) va_end(args);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 51) }
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 52)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 53) static int adfs_checkdiscrecord(struct adfs_discrecord *dr)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 54) {
8616108de1524 (Russell King 2019-06-04 14:50:19 +0100 55) unsigned int max_idlen;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 56) int i;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 57)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 58) /* sector size must be 256, 512 or 1024 bytes */
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 59) if (dr->log2secsize != 8 &&
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 60) dr->log2secsize != 9 &&
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 61) dr->log2secsize != 10)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 62) return 1;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 63)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 64) /* idlen must be at least log2secsize + 3 */
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 65) if (dr->idlen < dr->log2secsize + 3)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 66) return 1;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 67)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 68) /* we cannot have such a large disc that we
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 69) * are unable to represent sector offsets in
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 70) * 32 bits. This works out at 2.0 TB.
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 71) */
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 72) if (le32_to_cpu(dr->disc_size_high) >> dr->log2secsize)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 73) return 1;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 74)
8616108de1524 (Russell King 2019-06-04 14:50:19 +0100 75) /*
8616108de1524 (Russell King 2019-06-04 14:50:19 +0100 76) * Maximum idlen is limited to 16 bits for new directories by
8616108de1524 (Russell King 2019-06-04 14:50:19 +0100 77) * the three-byte storage of an indirect disc address. For
8616108de1524 (Russell King 2019-06-04 14:50:19 +0100 78) * big directories, idlen must be no greater than 19 v2 [1.0]
8616108de1524 (Russell King 2019-06-04 14:50:19 +0100 79) */
8616108de1524 (Russell King 2019-06-04 14:50:19 +0100 80) max_idlen = dr->format_version ? 19 : 16;
8616108de1524 (Russell King 2019-06-04 14:50:19 +0100 81) if (dr->idlen > max_idlen)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 82) return 1;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 83)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 84) /* reserved bytes should be zero */
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 85) for (i = 0; i < sizeof(dr->unused52); i++)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 86) if (dr->unused52[i] != 0)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 87) return 1;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 88)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 89) return 0;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 90) }
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 91)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 92) static void adfs_put_super(struct super_block *sb)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 93) {
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 94) struct adfs_sb_info *asb = ADFS_SB(sb);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 95)
7b1952676256d (Russell King 2019-12-09 11:08:44 +0000 96) adfs_free_map(sb);
2d1d9b5b5cc2d (Al Viro 2013-10-03 12:37:18 -0400 97) kfree_rcu(asb, rcu);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 98) }
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 99)
34c80b1d93e6e (Al Viro 2011-12-08 21:32:45 -0500 100) static int adfs_show_options(struct seq_file *seq, struct dentry *root)
e11400b0cadc9 (Miklos Szeredi 2008-02-08 04:21:35 -0800 101) {
34c80b1d93e6e (Al Viro 2011-12-08 21:32:45 -0500 102) struct adfs_sb_info *asb = ADFS_SB(root->d_sb);
e11400b0cadc9 (Miklos Szeredi 2008-02-08 04:21:35 -0800 103)
c010d1ff4f69c (Eric W. Biederman 2012-02-07 15:58:38 -0800 104) if (!uid_eq(asb->s_uid, GLOBAL_ROOT_UID))
c010d1ff4f69c (Eric W. Biederman 2012-02-07 15:58:38 -0800 105) seq_printf(seq, ",uid=%u", from_kuid_munged(&init_user_ns, asb->s_uid));
c010d1ff4f69c (Eric W. Biederman 2012-02-07 15:58:38 -0800 106) if (!gid_eq(asb->s_gid, GLOBAL_ROOT_GID))
c010d1ff4f69c (Eric W. Biederman 2012-02-07 15:58:38 -0800 107) seq_printf(seq, ",gid=%u", from_kgid_munged(&init_user_ns, asb->s_gid));
e11400b0cadc9 (Miklos Szeredi 2008-02-08 04:21:35 -0800 108) if (asb->s_owner_mask != ADFS_DEFAULT_OWNER_MASK)
e11400b0cadc9 (Miklos Szeredi 2008-02-08 04:21:35 -0800 109) seq_printf(seq, ",ownmask=%o", asb->s_owner_mask);
e11400b0cadc9 (Miklos Szeredi 2008-02-08 04:21:35 -0800 110) if (asb->s_other_mask != ADFS_DEFAULT_OTHER_MASK)
e11400b0cadc9 (Miklos Szeredi 2008-02-08 04:21:35 -0800 111) seq_printf(seq, ",othmask=%o", asb->s_other_mask);
da23ef0549d42 (Stuart Swales 2011-03-22 16:35:06 -0700 112) if (asb->s_ftsuffix != 0)
da23ef0549d42 (Stuart Swales 2011-03-22 16:35:06 -0700 113) seq_printf(seq, ",ftsuffix=%u", asb->s_ftsuffix);
e11400b0cadc9 (Miklos Szeredi 2008-02-08 04:21:35 -0800 114)
e11400b0cadc9 (Miklos Szeredi 2008-02-08 04:21:35 -0800 115) return 0;
e11400b0cadc9 (Miklos Szeredi 2008-02-08 04:21:35 -0800 116) }
e11400b0cadc9 (Miklos Szeredi 2008-02-08 04:21:35 -0800 117)
da23ef0549d42 (Stuart Swales 2011-03-22 16:35:06 -0700 118) enum {Opt_uid, Opt_gid, Opt_ownmask, Opt_othmask, Opt_ftsuffix, Opt_err};
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 119)
a447c0932445f (Steven Whitehouse 2008-10-13 10:46:57 +0100 120) static const match_table_t tokens = {
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 121) {Opt_uid, "uid=%u"},
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 122) {Opt_gid, "gid=%u"},
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 123) {Opt_ownmask, "ownmask=%o"},
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 124) {Opt_othmask, "othmask=%o"},
da23ef0549d42 (Stuart Swales 2011-03-22 16:35:06 -0700 125) {Opt_ftsuffix, "ftsuffix=%u"},
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 126) {Opt_err, NULL}
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 127) };
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 128)
4c5762f5f5e31 (Russell King 2019-06-04 14:50:09 +0100 129) static int parse_options(struct super_block *sb, struct adfs_sb_info *asb,
4c5762f5f5e31 (Russell King 2019-06-04 14:50:09 +0100 130) char *options)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 131) {
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 132) char *p;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 133) int option;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 134)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 135) if (!options)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 136) return 0;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 137)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 138) while ((p = strsep(&options, ",")) != NULL) {
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 139) substring_t args[MAX_OPT_ARGS];
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 140) int token;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 141) if (!*p)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 142) continue;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 143)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 144) token = match_token(p, tokens, args);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 145) switch (token) {
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 146) case Opt_uid:
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 147) if (match_int(args, &option))
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 148) return -EINVAL;
c010d1ff4f69c (Eric W. Biederman 2012-02-07 15:58:38 -0800 149) asb->s_uid = make_kuid(current_user_ns(), option);
c010d1ff4f69c (Eric W. Biederman 2012-02-07 15:58:38 -0800 150) if (!uid_valid(asb->s_uid))
c010d1ff4f69c (Eric W. Biederman 2012-02-07 15:58:38 -0800 151) return -EINVAL;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 152) break;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 153) case Opt_gid:
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 154) if (match_int(args, &option))
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 155) return -EINVAL;
c010d1ff4f69c (Eric W. Biederman 2012-02-07 15:58:38 -0800 156) asb->s_gid = make_kgid(current_user_ns(), option);
c010d1ff4f69c (Eric W. Biederman 2012-02-07 15:58:38 -0800 157) if (!gid_valid(asb->s_gid))
c010d1ff4f69c (Eric W. Biederman 2012-02-07 15:58:38 -0800 158) return -EINVAL;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 159) break;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 160) case Opt_ownmask:
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 161) if (match_octal(args, &option))
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 162) return -EINVAL;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 163) asb->s_owner_mask = option;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 164) break;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 165) case Opt_othmask:
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 166) if (match_octal(args, &option))
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 167) return -EINVAL;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 168) asb->s_other_mask = option;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 169) break;
da23ef0549d42 (Stuart Swales 2011-03-22 16:35:06 -0700 170) case Opt_ftsuffix:
da23ef0549d42 (Stuart Swales 2011-03-22 16:35:06 -0700 171) if (match_int(args, &option))
da23ef0549d42 (Stuart Swales 2011-03-22 16:35:06 -0700 172) return -EINVAL;
da23ef0549d42 (Stuart Swales 2011-03-22 16:35:06 -0700 173) asb->s_ftsuffix = option;
da23ef0549d42 (Stuart Swales 2011-03-22 16:35:06 -0700 174) break;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 175) default:
ceb3b10613eba (Russell King 2019-06-04 14:49:52 +0100 176) adfs_msg(sb, KERN_ERR,
ceb3b10613eba (Russell King 2019-06-04 14:49:52 +0100 177) "unrecognised mount option \"%s\" or missing value",
ceb3b10613eba (Russell King 2019-06-04 14:49:52 +0100 178) p);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 179) return -EINVAL;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 180) }
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 181) }
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 182) return 0;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 183) }
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 184)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 185) static int adfs_remount(struct super_block *sb, int *flags, char *data)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 186) {
4c5762f5f5e31 (Russell King 2019-06-04 14:50:09 +0100 187) struct adfs_sb_info temp_asb;
4c5762f5f5e31 (Russell King 2019-06-04 14:50:09 +0100 188) int ret;
4c5762f5f5e31 (Russell King 2019-06-04 14:50:09 +0100 189)
02b9984d64087 (Theodore Ts'o 2014-03-13 10:14:33 -0400 190) sync_filesystem(sb);
421d3c0faa288 (Russell King 2019-06-04 14:50:03 +0100 191) *flags |= ADFS_SB_FLAGS;
4c5762f5f5e31 (Russell King 2019-06-04 14:50:09 +0100 192)
4c5762f5f5e31 (Russell King 2019-06-04 14:50:09 +0100 193) temp_asb = *ADFS_SB(sb);
4c5762f5f5e31 (Russell King 2019-06-04 14:50:09 +0100 194) ret = parse_options(sb, &temp_asb, data);
4c5762f5f5e31 (Russell King 2019-06-04 14:50:09 +0100 195) if (ret == 0)
4c5762f5f5e31 (Russell King 2019-06-04 14:50:09 +0100 196) *ADFS_SB(sb) = temp_asb;
4c5762f5f5e31 (Russell King 2019-06-04 14:50:09 +0100 197)
4c5762f5f5e31 (Russell King 2019-06-04 14:50:09 +0100 198) return ret;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 199) }
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 200)
726c334223180 (David Howells 2006-06-23 02:02:58 -0700 201) static int adfs_statfs(struct dentry *dentry, struct kstatfs *buf)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 202) {
accb401220403 (Coly Li 2009-04-02 16:59:27 -0700 203) struct super_block *sb = dentry->d_sb;
accb401220403 (Coly Li 2009-04-02 16:59:27 -0700 204) struct adfs_sb_info *sbi = ADFS_SB(sb);
accb401220403 (Coly Li 2009-04-02 16:59:27 -0700 205) u64 id = huge_encode_dev(sb->s_bdev->bd_dev);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 206)
e6160e469f56a (Russell King 2019-12-09 11:08:34 +0000 207) adfs_map_statfs(sb, buf);
e6160e469f56a (Russell King 2019-12-09 11:08:34 +0000 208)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 209) buf->f_type = ADFS_SUPER_MAGIC;
accb401220403 (Coly Li 2009-04-02 16:59:27 -0700 210) buf->f_namelen = sbi->s_namelen;
accb401220403 (Coly Li 2009-04-02 16:59:27 -0700 211) buf->f_bsize = sb->s_blocksize;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 212) buf->f_ffree = (long)(buf->f_bfree * buf->f_files) / (long)buf->f_blocks;
6d1349c769ea2 (Al Viro 2020-09-18 16:45:50 -0400 213) buf->f_fsid = u64_to_fsid(id);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 214)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 215) return 0;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 216) }
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 217)
e18b890bb0881 (Christoph Lameter 2006-12-06 20:33:20 -0800 218) static struct kmem_cache *adfs_inode_cachep;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 219)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 220) static struct inode *adfs_alloc_inode(struct super_block *sb)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 221) {
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 222) struct adfs_inode_info *ei;
d96f184532e9a (Firo Yang 2015-06-30 14:57:52 -0700 223) ei = kmem_cache_alloc(adfs_inode_cachep, GFP_KERNEL);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 224) if (!ei)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 225) return NULL;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 226) return &ei->vfs_inode;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 227) }
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 228)
8f05a79535606 (Al Viro 2019-04-10 15:01:52 -0400 229) static void adfs_free_inode(struct inode *inode)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 230) {
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 231) kmem_cache_free(adfs_inode_cachep, ADFS_I(inode));
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 232) }
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 233)
f352064275adf (Russell King 2019-12-09 11:11:18 +0000 234) static int adfs_drop_inode(struct inode *inode)
f352064275adf (Russell King 2019-12-09 11:11:18 +0000 235) {
f352064275adf (Russell King 2019-12-09 11:11:18 +0000 236) /* always drop inodes if we are read-only */
f352064275adf (Russell King 2019-12-09 11:11:18 +0000 237) return !IS_ENABLED(CONFIG_ADFS_FS_RW) || IS_RDONLY(inode);
f352064275adf (Russell King 2019-12-09 11:11:18 +0000 238) }
f352064275adf (Russell King 2019-12-09 11:11:18 +0000 239)
51cc50685a427 (Alexey Dobriyan 2008-07-25 19:45:34 -0700 240) static void init_once(void *foo)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 241) {
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 242) struct adfs_inode_info *ei = (struct adfs_inode_info *) foo;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 243)
a35afb830f8d7 (Christoph Lameter 2007-05-16 22:10:57 -0700 244) inode_init_once(&ei->vfs_inode);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 245) }
20c2df83d25c6 (Paul Mundt 2007-07-20 10:11:58 +0900 246)
894122db49135 (Fabian Frederick 2014-04-07 15:38:58 -0700 247) static int __init init_inodecache(void)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 248) {
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 249) adfs_inode_cachep = kmem_cache_create("adfs_inode_cache",
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 250) sizeof(struct adfs_inode_info),
fffb60f93ce58 (Paul Jackson 2006-03-24 03:16:06 -0800 251) 0, (SLAB_RECLAIM_ACCOUNT|
5d097056c9a01 (Vladimir Davydov 2016-01-14 15:18:21 -0800 252) SLAB_MEM_SPREAD|SLAB_ACCOUNT),
20c2df83d25c6 (Paul Mundt 2007-07-20 10:11:58 +0900 253) init_once);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 254) if (adfs_inode_cachep == NULL)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 255) return -ENOMEM;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 256) return 0;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 257) }
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 258)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 259) static void destroy_inodecache(void)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 260) {
8c0a85377048b (Kirill A. Shutemov 2012-09-26 11:33:07 +1000 261) /*
8c0a85377048b (Kirill A. Shutemov 2012-09-26 11:33:07 +1000 262) * Make sure all delayed rcu free inodes are flushed before we
8c0a85377048b (Kirill A. Shutemov 2012-09-26 11:33:07 +1000 263) * destroy cache.
8c0a85377048b (Kirill A. Shutemov 2012-09-26 11:33:07 +1000 264) */
8c0a85377048b (Kirill A. Shutemov 2012-09-26 11:33:07 +1000 265) rcu_barrier();
1a1d92c10dd24 (Alexey Dobriyan 2006-09-27 01:49:40 -0700 266) kmem_cache_destroy(adfs_inode_cachep);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 267) }
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 268)
ee9b6d61a2a43 (Josef 'Jeff' Sipek 2007-02-12 00:55:41 -0800 269) static const struct super_operations adfs_sops = {
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 270) .alloc_inode = adfs_alloc_inode,
8f05a79535606 (Al Viro 2019-04-10 15:01:52 -0400 271) .free_inode = adfs_free_inode,
f352064275adf (Russell King 2019-12-09 11:11:18 +0000 272) .drop_inode = adfs_drop_inode,
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 273) .write_inode = adfs_write_inode,
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 274) .put_super = adfs_put_super,
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 275) .statfs = adfs_statfs,
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 276) .remount_fs = adfs_remount,
e11400b0cadc9 (Miklos Szeredi 2008-02-08 04:21:35 -0800 277) .show_options = adfs_show_options,
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 278) };
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 279)
e3858e125bd57 (Russell King 2019-12-09 11:11:28 +0000 280) static int adfs_probe(struct super_block *sb, unsigned int offset, int silent,
e3858e125bd57 (Russell King 2019-12-09 11:11:28 +0000 281) int (*validate)(struct super_block *sb,
e3858e125bd57 (Russell King 2019-12-09 11:11:28 +0000 282) struct buffer_head *bh,
e3858e125bd57 (Russell King 2019-12-09 11:11:28 +0000 283) struct adfs_discrecord **bhp))
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 284) {
e3858e125bd57 (Russell King 2019-12-09 11:11:28 +0000 285) struct adfs_sb_info *asb = ADFS_SB(sb);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 286) struct adfs_discrecord *dr;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 287) struct buffer_head *bh;
e3858e125bd57 (Russell King 2019-12-09 11:11:28 +0000 288) unsigned int blocksize = BLOCK_SIZE;
e3858e125bd57 (Russell King 2019-12-09 11:11:28 +0000 289) int ret, try;
e3858e125bd57 (Russell King 2019-12-09 11:11:28 +0000 290)
e3858e125bd57 (Russell King 2019-12-09 11:11:28 +0000 291) for (try = 0; try < 2; try++) {
e3858e125bd57 (Russell King 2019-12-09 11:11:28 +0000 292) /* try to set the requested block size */
e3858e125bd57 (Russell King 2019-12-09 11:11:28 +0000 293) if (sb->s_blocksize != blocksize &&
e3858e125bd57 (Russell King 2019-12-09 11:11:28 +0000 294) !sb_set_blocksize(sb, blocksize)) {
e3858e125bd57 (Russell King 2019-12-09 11:11:28 +0000 295) if (!silent)
e3858e125bd57 (Russell King 2019-12-09 11:11:28 +0000 296) adfs_msg(sb, KERN_ERR,
e3858e125bd57 (Russell King 2019-12-09 11:11:28 +0000 297) "error: unsupported blocksize");
e3858e125bd57 (Russell King 2019-12-09 11:11:28 +0000 298) return -EINVAL;
e3858e125bd57 (Russell King 2019-12-09 11:11:28 +0000 299) }
e3858e125bd57 (Russell King 2019-12-09 11:11:28 +0000 300)
e3858e125bd57 (Russell King 2019-12-09 11:11:28 +0000 301) /* read the buffer */
e3858e125bd57 (Russell King 2019-12-09 11:11:28 +0000 302) bh = sb_bread(sb, offset >> sb->s_blocksize_bits);
e3858e125bd57 (Russell King 2019-12-09 11:11:28 +0000 303) if (!bh) {
e3858e125bd57 (Russell King 2019-12-09 11:11:28 +0000 304) adfs_msg(sb, KERN_ERR,
e3858e125bd57 (Russell King 2019-12-09 11:11:28 +0000 305) "error: unable to read block %u, try %d",
e3858e125bd57 (Russell King 2019-12-09 11:11:28 +0000 306) offset >> sb->s_blocksize_bits, try);
e3858e125bd57 (Russell King 2019-12-09 11:11:28 +0000 307) return -EIO;
e3858e125bd57 (Russell King 2019-12-09 11:11:28 +0000 308) }
e3858e125bd57 (Russell King 2019-12-09 11:11:28 +0000 309)
e3858e125bd57 (Russell King 2019-12-09 11:11:28 +0000 310) /* validate it */
e3858e125bd57 (Russell King 2019-12-09 11:11:28 +0000 311) ret = validate(sb, bh, &dr);
e3858e125bd57 (Russell King 2019-12-09 11:11:28 +0000 312) if (ret) {
e3858e125bd57 (Russell King 2019-12-09 11:11:28 +0000 313) brelse(bh);
e3858e125bd57 (Russell King 2019-12-09 11:11:28 +0000 314) return ret;
e3858e125bd57 (Russell King 2019-12-09 11:11:28 +0000 315) }
e3858e125bd57 (Russell King 2019-12-09 11:11:28 +0000 316)
e3858e125bd57 (Russell King 2019-12-09 11:11:28 +0000 317) /* does the block size match the filesystem block size? */
e3858e125bd57 (Russell King 2019-12-09 11:11:28 +0000 318) blocksize = 1 << dr->log2secsize;
e3858e125bd57 (Russell King 2019-12-09 11:11:28 +0000 319) if (sb->s_blocksize == blocksize) {
e3858e125bd57 (Russell King 2019-12-09 11:11:28 +0000 320) asb->s_map = adfs_read_map(sb, dr);
e3858e125bd57 (Russell King 2019-12-09 11:11:28 +0000 321) brelse(bh);
e3858e125bd57 (Russell King 2019-12-09 11:11:28 +0000 322) return PTR_ERR_OR_ZERO(asb->s_map);
e3858e125bd57 (Russell King 2019-12-09 11:11:28 +0000 323) }
e3858e125bd57 (Russell King 2019-12-09 11:11:28 +0000 324)
e3858e125bd57 (Russell King 2019-12-09 11:11:28 +0000 325) brelse(bh);
e3858e125bd57 (Russell King 2019-12-09 11:11:28 +0000 326) }
e3858e125bd57 (Russell King 2019-12-09 11:11:28 +0000 327)
e3858e125bd57 (Russell King 2019-12-09 11:11:28 +0000 328) return -EIO;
e3858e125bd57 (Russell King 2019-12-09 11:11:28 +0000 329) }
e3858e125bd57 (Russell King 2019-12-09 11:11:28 +0000 330)
e3858e125bd57 (Russell King 2019-12-09 11:11:28 +0000 331) static int adfs_validate_bblk(struct super_block *sb, struct buffer_head *bh,
e3858e125bd57 (Russell King 2019-12-09 11:11:28 +0000 332) struct adfs_discrecord **drp)
e3858e125bd57 (Russell King 2019-12-09 11:11:28 +0000 333) {
e3858e125bd57 (Russell King 2019-12-09 11:11:28 +0000 334) struct adfs_discrecord *dr;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 335) unsigned char *b_data;
e3858e125bd57 (Russell King 2019-12-09 11:11:28 +0000 336)
e3858e125bd57 (Russell King 2019-12-09 11:11:28 +0000 337) b_data = bh->b_data + (ADFS_DISCRECORD % sb->s_blocksize);
e3858e125bd57 (Russell King 2019-12-09 11:11:28 +0000 338) if (adfs_checkbblk(b_data))
e3858e125bd57 (Russell King 2019-12-09 11:11:28 +0000 339) return -EILSEQ;
e3858e125bd57 (Russell King 2019-12-09 11:11:28 +0000 340)
e3858e125bd57 (Russell King 2019-12-09 11:11:28 +0000 341) /* Do some sanity checks on the ADFS disc record */
e3858e125bd57 (Russell King 2019-12-09 11:11:28 +0000 342) dr = (struct adfs_discrecord *)(b_data + ADFS_DR_OFFSET);
e3858e125bd57 (Russell King 2019-12-09 11:11:28 +0000 343) if (adfs_checkdiscrecord(dr))
e3858e125bd57 (Russell King 2019-12-09 11:11:28 +0000 344) return -EILSEQ;
e3858e125bd57 (Russell King 2019-12-09 11:11:28 +0000 345)
e3858e125bd57 (Russell King 2019-12-09 11:11:28 +0000 346) *drp = dr;
e3858e125bd57 (Russell King 2019-12-09 11:11:28 +0000 347) return 0;
e3858e125bd57 (Russell King 2019-12-09 11:11:28 +0000 348) }
e3858e125bd57 (Russell King 2019-12-09 11:11:28 +0000 349)
08ead1b8b98d9 (Russell King 2019-12-09 11:11:33 +0000 350) static int adfs_validate_dr0(struct super_block *sb, struct buffer_head *bh,
08ead1b8b98d9 (Russell King 2019-12-09 11:11:33 +0000 351) struct adfs_discrecord **drp)
08ead1b8b98d9 (Russell King 2019-12-09 11:11:33 +0000 352) {
08ead1b8b98d9 (Russell King 2019-12-09 11:11:33 +0000 353) struct adfs_discrecord *dr;
08ead1b8b98d9 (Russell King 2019-12-09 11:11:33 +0000 354)
08ead1b8b98d9 (Russell King 2019-12-09 11:11:33 +0000 355) /* Do some sanity checks on the ADFS disc record */
08ead1b8b98d9 (Russell King 2019-12-09 11:11:33 +0000 356) dr = (struct adfs_discrecord *)(bh->b_data + 4);
08ead1b8b98d9 (Russell King 2019-12-09 11:11:33 +0000 357) if (adfs_checkdiscrecord(dr) || dr->nzones_high || dr->nzones != 1)
08ead1b8b98d9 (Russell King 2019-12-09 11:11:33 +0000 358) return -EILSEQ;
08ead1b8b98d9 (Russell King 2019-12-09 11:11:33 +0000 359)
08ead1b8b98d9 (Russell King 2019-12-09 11:11:33 +0000 360) *drp = dr;
08ead1b8b98d9 (Russell King 2019-12-09 11:11:33 +0000 361) return 0;
08ead1b8b98d9 (Russell King 2019-12-09 11:11:33 +0000 362) }
08ead1b8b98d9 (Russell King 2019-12-09 11:11:33 +0000 363)
e3858e125bd57 (Russell King 2019-12-09 11:11:28 +0000 364) static int adfs_fill_super(struct super_block *sb, void *data, int silent)
e3858e125bd57 (Russell King 2019-12-09 11:11:28 +0000 365) {
e3858e125bd57 (Russell King 2019-12-09 11:11:28 +0000 366) struct adfs_discrecord *dr;
e3858e125bd57 (Russell King 2019-12-09 11:11:28 +0000 367) struct object_info root_obj;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 368) struct adfs_sb_info *asb;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 369) struct inode *root;
b796410630a0f (Sanidhya Kashyap 2015-04-16 12:48:13 -0700 370) int ret = -EINVAL;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 371)
421d3c0faa288 (Russell King 2019-06-04 14:50:03 +0100 372) sb->s_flags |= ADFS_SB_FLAGS;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 373)
f8314dc60ccba (Panagiotis Issaris 2006-09-27 01:49:37 -0700 374) asb = kzalloc(sizeof(*asb), GFP_KERNEL);
4688a066ecf60 (Arnd Bergmann 2011-01-22 20:05:05 +0100 375) if (!asb)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 376) return -ENOMEM;
eeeb9dd98ec35 (Russell King 2019-12-09 11:08:18 +0000 377)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 378) sb->s_fs_info = asb;
f6f14a0d71b07 (Russell King 2019-12-09 11:08:59 +0000 379) sb->s_magic = ADFS_SUPER_MAGIC;
eeeb9dd98ec35 (Russell King 2019-12-09 11:08:18 +0000 380) sb->s_time_gran = 10000000;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 381)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 382) /* set default options */
c010d1ff4f69c (Eric W. Biederman 2012-02-07 15:58:38 -0800 383) asb->s_uid = GLOBAL_ROOT_UID;
c010d1ff4f69c (Eric W. Biederman 2012-02-07 15:58:38 -0800 384) asb->s_gid = GLOBAL_ROOT_GID;
e11400b0cadc9 (Miklos Szeredi 2008-02-08 04:21:35 -0800 385) asb->s_owner_mask = ADFS_DEFAULT_OWNER_MASK;
e11400b0cadc9 (Miklos Szeredi 2008-02-08 04:21:35 -0800 386) asb->s_other_mask = ADFS_DEFAULT_OTHER_MASK;
da23ef0549d42 (Stuart Swales 2011-03-22 16:35:06 -0700 387) asb->s_ftsuffix = 0;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 388)
4c5762f5f5e31 (Russell King 2019-06-04 14:50:09 +0100 389) if (parse_options(sb, asb, data))
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 390) goto error;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 391)
e3858e125bd57 (Russell King 2019-12-09 11:11:28 +0000 392) /* Try to probe the filesystem boot block */
08ead1b8b98d9 (Russell King 2019-12-09 11:11:33 +0000 393) ret = adfs_probe(sb, ADFS_DISCRECORD, 1, adfs_validate_bblk);
08ead1b8b98d9 (Russell King 2019-12-09 11:11:33 +0000 394) if (ret == -EILSEQ)
08ead1b8b98d9 (Russell King 2019-12-09 11:11:33 +0000 395) ret = adfs_probe(sb, 0, silent, adfs_validate_dr0);
e3858e125bd57 (Russell King 2019-12-09 11:11:28 +0000 396) if (ret == -EILSEQ) {
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 397) if (!silent)
ceb3b10613eba (Russell King 2019-06-04 14:49:52 +0100 398) adfs_msg(sb, KERN_ERR,
e3858e125bd57 (Russell King 2019-12-09 11:11:28 +0000 399) "error: can't find an ADFS filesystem on dev %s.",
e3858e125bd57 (Russell King 2019-12-09 11:11:28 +0000 400) sb->s_id);
b796410630a0f (Sanidhya Kashyap 2015-04-16 12:48:13 -0700 401) ret = -EINVAL;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 402) }
e3858e125bd57 (Russell King 2019-12-09 11:11:28 +0000 403) if (ret)
e3858e125bd57 (Russell King 2019-12-09 11:11:28 +0000 404) goto error;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 405)
e3858e125bd57 (Russell King 2019-12-09 11:11:28 +0000 406) /* set up enough so that we can read an inode */
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 407) sb->s_op = &adfs_sops;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 408)
1dfdfc94730bd (Russell King 2019-06-04 14:49:30 +0100 409) dr = adfs_map_discrecord(asb->s_map);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 410)
5ed70bb47767d (Russell King 2019-06-04 14:49:57 +0100 411) root_obj.parent_id = root_obj.indaddr = le32_to_cpu(dr->root);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 412) root_obj.name_len = 0;
da23ef0549d42 (Stuart Swales 2011-03-22 16:35:06 -0700 413) /* Set root object date as 01 Jan 1987 00:00:00 */
da23ef0549d42 (Stuart Swales 2011-03-22 16:35:06 -0700 414) root_obj.loadaddr = 0xfff0003f;
da23ef0549d42 (Stuart Swales 2011-03-22 16:35:06 -0700 415) root_obj.execaddr = 0xec22c000;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 416) root_obj.size = ADFS_NEWDIR_SIZE;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 417) root_obj.attr = ADFS_NDA_DIRECTORY | ADFS_NDA_OWNER_READ |
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 418) ADFS_NDA_OWNER_WRITE | ADFS_NDA_PUBLIC_READ;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 419)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 420) /*
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 421) * If this is a F+ disk with variable length directories,
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 422) * get the root_size from the disc record.
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 423) */
cb88b5a387dd9 (Russell King 2019-06-04 14:49:41 +0100 424) if (dr->format_version) {
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 425) root_obj.size = le32_to_cpu(dr->root_size);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 426) asb->s_dir = &adfs_fplus_dir_ops;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 427) asb->s_namelen = ADFS_FPLUS_NAME_LEN;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 428) } else {
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 429) asb->s_dir = &adfs_f_dir_ops;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 430) asb->s_namelen = ADFS_F_NAME_LEN;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 431) }
da23ef0549d42 (Stuart Swales 2011-03-22 16:35:06 -0700 432) /*
da23ef0549d42 (Stuart Swales 2011-03-22 16:35:06 -0700 433) * ,xyz hex filetype suffix may be added by driver
da23ef0549d42 (Stuart Swales 2011-03-22 16:35:06 -0700 434) * to files that have valid RISC OS filetype
da23ef0549d42 (Stuart Swales 2011-03-22 16:35:06 -0700 435) */
da23ef0549d42 (Stuart Swales 2011-03-22 16:35:06 -0700 436) if (asb->s_ftsuffix)
da23ef0549d42 (Stuart Swales 2011-03-22 16:35:06 -0700 437) asb->s_namelen += 4;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 438)
96e1391414f80 (Al Viro 2010-12-18 11:20:57 -0500 439) sb->s_d_op = &adfs_dentry_operations;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 440) root = adfs_iget(sb, &root_obj);
48fde701aff66 (Al Viro 2012-01-08 22:15:13 -0500 441) sb->s_root = d_make_root(root);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 442) if (!sb->s_root) {
7b1952676256d (Russell King 2019-12-09 11:08:44 +0000 443) adfs_free_map(sb);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 444) adfs_error(sb, "get root inode failed\n");
b796410630a0f (Sanidhya Kashyap 2015-04-16 12:48:13 -0700 445) ret = -EIO;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 446) goto error;
96e1391414f80 (Al Viro 2010-12-18 11:20:57 -0500 447) }
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 448) return 0;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 449)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 450) error:
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 451) sb->s_fs_info = NULL;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 452) kfree(asb);
b796410630a0f (Sanidhya Kashyap 2015-04-16 12:48:13 -0700 453) return ret;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 454) }
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 455)
152a083666710 (Al Viro 2010-07-25 00:46:55 +0400 456) static struct dentry *adfs_mount(struct file_system_type *fs_type,
152a083666710 (Al Viro 2010-07-25 00:46:55 +0400 457) int flags, const char *dev_name, void *data)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 458) {
152a083666710 (Al Viro 2010-07-25 00:46:55 +0400 459) return mount_bdev(fs_type, flags, dev_name, data, adfs_fill_super);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 460) }
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 461)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 462) static struct file_system_type adfs_fs_type = {
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 463) .owner = THIS_MODULE,
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 464) .name = "adfs",
152a083666710 (Al Viro 2010-07-25 00:46:55 +0400 465) .mount = adfs_mount,
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 466) .kill_sb = kill_block_super,
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 467) .fs_flags = FS_REQUIRES_DEV,
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 468) };
7f78e03513940 (Eric W. Biederman 2013-03-02 19:39:14 -0800 469) MODULE_ALIAS_FS("adfs");
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 470)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 471) static int __init init_adfs_fs(void)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 472) {
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 473) int err = init_inodecache();
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 474) if (err)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 475) goto out1;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 476) err = register_filesystem(&adfs_fs_type);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 477) if (err)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 478) goto out;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 479) return 0;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 480) out:
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 481) destroy_inodecache();
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 482) out1:
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 483) return err;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 484) }
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 485)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 486) static void __exit exit_adfs_fs(void)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 487) {
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 488) unregister_filesystem(&adfs_fs_type);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 489) destroy_inodecache();
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 490) }
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 491)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 492) module_init(init_adfs_fs)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 493) module_exit(exit_adfs_fs)
608ba50bd0225 (Al Viro 2009-06-16 14:52:13 -0400 494) MODULE_LICENSE("GPL");
VisionFive2 Linux kernel
StarFive Tech Linux Kernel for VisionFive (JH7110) boards (mirror)
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