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/dir.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) 1999-2000 Russell King
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 6) *
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 7) * Common directory handling for ADFS
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 8) */
1dd9f5babfd95 (Russell King 2019-12-09 11:09:20 +0000 9) #include <linux/slab.h>
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 10) #include "adfs.h"
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 11)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 12) /*
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 13) * For future. This should probably be per-directory.
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 14) */
deed1bfd150c7 (Russell King 2019-12-09 11:09:51 +0000 15) static DECLARE_RWSEM(adfs_dir_rwsem);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 16)
a317120bf7f83 (Russell King 2019-12-09 11:09:30 +0000 17) int adfs_dir_copyfrom(void *dst, struct adfs_dir *dir, unsigned int offset,
a317120bf7f83 (Russell King 2019-12-09 11:09:30 +0000 18) size_t len)
a317120bf7f83 (Russell King 2019-12-09 11:09:30 +0000 19) {
a317120bf7f83 (Russell King 2019-12-09 11:09:30 +0000 20) struct super_block *sb = dir->sb;
a317120bf7f83 (Russell King 2019-12-09 11:09:30 +0000 21) unsigned int index, remain;
a317120bf7f83 (Russell King 2019-12-09 11:09:30 +0000 22)
a317120bf7f83 (Russell King 2019-12-09 11:09:30 +0000 23) index = offset >> sb->s_blocksize_bits;
a317120bf7f83 (Russell King 2019-12-09 11:09:30 +0000 24) offset &= sb->s_blocksize - 1;
a317120bf7f83 (Russell King 2019-12-09 11:09:30 +0000 25) remain = sb->s_blocksize - offset;
a317120bf7f83 (Russell King 2019-12-09 11:09:30 +0000 26) if (index + (remain < len) >= dir->nr_buffers)
a317120bf7f83 (Russell King 2019-12-09 11:09:30 +0000 27) return -EINVAL;
a317120bf7f83 (Russell King 2019-12-09 11:09:30 +0000 28)
a317120bf7f83 (Russell King 2019-12-09 11:09:30 +0000 29) if (remain < len) {
a317120bf7f83 (Russell King 2019-12-09 11:09:30 +0000 30) memcpy(dst, dir->bhs[index]->b_data + offset, remain);
a317120bf7f83 (Russell King 2019-12-09 11:09:30 +0000 31) dst += remain;
a317120bf7f83 (Russell King 2019-12-09 11:09:30 +0000 32) len -= remain;
a317120bf7f83 (Russell King 2019-12-09 11:09:30 +0000 33) index += 1;
a317120bf7f83 (Russell King 2019-12-09 11:09:30 +0000 34) offset = 0;
a317120bf7f83 (Russell King 2019-12-09 11:09:30 +0000 35) }
a317120bf7f83 (Russell King 2019-12-09 11:09:30 +0000 36)
a317120bf7f83 (Russell King 2019-12-09 11:09:30 +0000 37) memcpy(dst, dir->bhs[index]->b_data + offset, len);
a317120bf7f83 (Russell King 2019-12-09 11:09:30 +0000 38)
a317120bf7f83 (Russell King 2019-12-09 11:09:30 +0000 39) return 0;
a317120bf7f83 (Russell King 2019-12-09 11:09:30 +0000 40) }
a317120bf7f83 (Russell King 2019-12-09 11:09:30 +0000 41)
a317120bf7f83 (Russell King 2019-12-09 11:09:30 +0000 42) int adfs_dir_copyto(struct adfs_dir *dir, unsigned int offset, const void *src,
a317120bf7f83 (Russell King 2019-12-09 11:09:30 +0000 43) size_t len)
a317120bf7f83 (Russell King 2019-12-09 11:09:30 +0000 44) {
a317120bf7f83 (Russell King 2019-12-09 11:09:30 +0000 45) struct super_block *sb = dir->sb;
a317120bf7f83 (Russell King 2019-12-09 11:09:30 +0000 46) unsigned int index, remain;
a317120bf7f83 (Russell King 2019-12-09 11:09:30 +0000 47)
a317120bf7f83 (Russell King 2019-12-09 11:09:30 +0000 48) index = offset >> sb->s_blocksize_bits;
a317120bf7f83 (Russell King 2019-12-09 11:09:30 +0000 49) offset &= sb->s_blocksize - 1;
a317120bf7f83 (Russell King 2019-12-09 11:09:30 +0000 50) remain = sb->s_blocksize - offset;
a317120bf7f83 (Russell King 2019-12-09 11:09:30 +0000 51) if (index + (remain < len) >= dir->nr_buffers)
a317120bf7f83 (Russell King 2019-12-09 11:09:30 +0000 52) return -EINVAL;
a317120bf7f83 (Russell King 2019-12-09 11:09:30 +0000 53)
a317120bf7f83 (Russell King 2019-12-09 11:09:30 +0000 54) if (remain < len) {
a317120bf7f83 (Russell King 2019-12-09 11:09:30 +0000 55) memcpy(dir->bhs[index]->b_data + offset, src, remain);
a317120bf7f83 (Russell King 2019-12-09 11:09:30 +0000 56) src += remain;
a317120bf7f83 (Russell King 2019-12-09 11:09:30 +0000 57) len -= remain;
a317120bf7f83 (Russell King 2019-12-09 11:09:30 +0000 58) index += 1;
a317120bf7f83 (Russell King 2019-12-09 11:09:30 +0000 59) offset = 0;
a317120bf7f83 (Russell King 2019-12-09 11:09:30 +0000 60) }
a317120bf7f83 (Russell King 2019-12-09 11:09:30 +0000 61)
a317120bf7f83 (Russell King 2019-12-09 11:09:30 +0000 62) memcpy(dir->bhs[index]->b_data + offset, src, len);
a317120bf7f83 (Russell King 2019-12-09 11:09:30 +0000 63)
a317120bf7f83 (Russell King 2019-12-09 11:09:30 +0000 64) return 0;
a317120bf7f83 (Russell King 2019-12-09 11:09:30 +0000 65) }
a317120bf7f83 (Russell King 2019-12-09 11:09:30 +0000 66)
f6075c7907437 (Russell King 2019-12-09 11:10:01 +0000 67) static void __adfs_dir_cleanup(struct adfs_dir *dir)
1dd9f5babfd95 (Russell King 2019-12-09 11:09:20 +0000 68) {
1dd9f5babfd95 (Russell King 2019-12-09 11:09:20 +0000 69) dir->nr_buffers = 0;
1dd9f5babfd95 (Russell King 2019-12-09 11:09:20 +0000 70)
1dd9f5babfd95 (Russell King 2019-12-09 11:09:20 +0000 71) if (dir->bhs != dir->bh)
1dd9f5babfd95 (Russell King 2019-12-09 11:09:20 +0000 72) kfree(dir->bhs);
1dd9f5babfd95 (Russell King 2019-12-09 11:09:20 +0000 73) dir->bhs = NULL;
1dd9f5babfd95 (Russell King 2019-12-09 11:09:20 +0000 74) dir->sb = NULL;
1dd9f5babfd95 (Russell King 2019-12-09 11:09:20 +0000 75) }
1dd9f5babfd95 (Russell King 2019-12-09 11:09:20 +0000 76)
f6075c7907437 (Russell King 2019-12-09 11:10:01 +0000 77) void adfs_dir_relse(struct adfs_dir *dir)
f6075c7907437 (Russell King 2019-12-09 11:10:01 +0000 78) {
f6075c7907437 (Russell King 2019-12-09 11:10:01 +0000 79) unsigned int i;
f6075c7907437 (Russell King 2019-12-09 11:10:01 +0000 80)
f6075c7907437 (Russell King 2019-12-09 11:10:01 +0000 81) for (i = 0; i < dir->nr_buffers; i++)
f6075c7907437 (Russell King 2019-12-09 11:10:01 +0000 82) brelse(dir->bhs[i]);
f6075c7907437 (Russell King 2019-12-09 11:10:01 +0000 83)
f6075c7907437 (Russell King 2019-12-09 11:10:01 +0000 84) __adfs_dir_cleanup(dir);
f6075c7907437 (Russell King 2019-12-09 11:10:01 +0000 85) }
f6075c7907437 (Russell King 2019-12-09 11:10:01 +0000 86)
f6075c7907437 (Russell King 2019-12-09 11:10:01 +0000 87) static void adfs_dir_forget(struct adfs_dir *dir)
f6075c7907437 (Russell King 2019-12-09 11:10:01 +0000 88) {
f6075c7907437 (Russell King 2019-12-09 11:10:01 +0000 89) unsigned int i;
f6075c7907437 (Russell King 2019-12-09 11:10:01 +0000 90)
f6075c7907437 (Russell King 2019-12-09 11:10:01 +0000 91) for (i = 0; i < dir->nr_buffers; i++)
f6075c7907437 (Russell King 2019-12-09 11:10:01 +0000 92) bforget(dir->bhs[i]);
f6075c7907437 (Russell King 2019-12-09 11:10:01 +0000 93)
f6075c7907437 (Russell King 2019-12-09 11:10:01 +0000 94) __adfs_dir_cleanup(dir);
f6075c7907437 (Russell King 2019-12-09 11:10:01 +0000 95) }
f6075c7907437 (Russell King 2019-12-09 11:10:01 +0000 96)
419a6e5e82ca0 (Russell King 2019-12-09 11:09:35 +0000 97) int adfs_dir_read_buffers(struct super_block *sb, u32 indaddr,
419a6e5e82ca0 (Russell King 2019-12-09 11:09:35 +0000 98) unsigned int size, struct adfs_dir *dir)
419a6e5e82ca0 (Russell King 2019-12-09 11:09:35 +0000 99) {
419a6e5e82ca0 (Russell King 2019-12-09 11:09:35 +0000 100) struct buffer_head **bhs;
419a6e5e82ca0 (Russell King 2019-12-09 11:09:35 +0000 101) unsigned int i, num;
419a6e5e82ca0 (Russell King 2019-12-09 11:09:35 +0000 102) int block;
419a6e5e82ca0 (Russell King 2019-12-09 11:09:35 +0000 103)
419a6e5e82ca0 (Russell King 2019-12-09 11:09:35 +0000 104) num = ALIGN(size, sb->s_blocksize) >> sb->s_blocksize_bits;
419a6e5e82ca0 (Russell King 2019-12-09 11:09:35 +0000 105) if (num > ARRAY_SIZE(dir->bh)) {
419a6e5e82ca0 (Russell King 2019-12-09 11:09:35 +0000 106) /* We only allow one extension */
419a6e5e82ca0 (Russell King 2019-12-09 11:09:35 +0000 107) if (dir->bhs != dir->bh)
419a6e5e82ca0 (Russell King 2019-12-09 11:09:35 +0000 108) return -EINVAL;
419a6e5e82ca0 (Russell King 2019-12-09 11:09:35 +0000 109)
419a6e5e82ca0 (Russell King 2019-12-09 11:09:35 +0000 110) bhs = kcalloc(num, sizeof(*bhs), GFP_KERNEL);
419a6e5e82ca0 (Russell King 2019-12-09 11:09:35 +0000 111) if (!bhs)
419a6e5e82ca0 (Russell King 2019-12-09 11:09:35 +0000 112) return -ENOMEM;
419a6e5e82ca0 (Russell King 2019-12-09 11:09:35 +0000 113)
419a6e5e82ca0 (Russell King 2019-12-09 11:09:35 +0000 114) if (dir->nr_buffers)
419a6e5e82ca0 (Russell King 2019-12-09 11:09:35 +0000 115) memcpy(bhs, dir->bhs, dir->nr_buffers * sizeof(*bhs));
419a6e5e82ca0 (Russell King 2019-12-09 11:09:35 +0000 116)
419a6e5e82ca0 (Russell King 2019-12-09 11:09:35 +0000 117) dir->bhs = bhs;
419a6e5e82ca0 (Russell King 2019-12-09 11:09:35 +0000 118) }
419a6e5e82ca0 (Russell King 2019-12-09 11:09:35 +0000 119)
419a6e5e82ca0 (Russell King 2019-12-09 11:09:35 +0000 120) for (i = dir->nr_buffers; i < num; i++) {
419a6e5e82ca0 (Russell King 2019-12-09 11:09:35 +0000 121) block = __adfs_block_map(sb, indaddr, i);
419a6e5e82ca0 (Russell King 2019-12-09 11:09:35 +0000 122) if (!block) {
419a6e5e82ca0 (Russell King 2019-12-09 11:09:35 +0000 123) adfs_error(sb, "dir %06x has a hole at offset %u",
419a6e5e82ca0 (Russell King 2019-12-09 11:09:35 +0000 124) indaddr, i);
419a6e5e82ca0 (Russell King 2019-12-09 11:09:35 +0000 125) goto error;
419a6e5e82ca0 (Russell King 2019-12-09 11:09:35 +0000 126) }
419a6e5e82ca0 (Russell King 2019-12-09 11:09:35 +0000 127)
419a6e5e82ca0 (Russell King 2019-12-09 11:09:35 +0000 128) dir->bhs[i] = sb_bread(sb, block);
419a6e5e82ca0 (Russell King 2019-12-09 11:09:35 +0000 129) if (!dir->bhs[i]) {
419a6e5e82ca0 (Russell King 2019-12-09 11:09:35 +0000 130) adfs_error(sb,
419a6e5e82ca0 (Russell King 2019-12-09 11:09:35 +0000 131) "dir %06x failed read at offset %u, mapped block 0x%08x",
419a6e5e82ca0 (Russell King 2019-12-09 11:09:35 +0000 132) indaddr, i, block);
419a6e5e82ca0 (Russell King 2019-12-09 11:09:35 +0000 133) goto error;
419a6e5e82ca0 (Russell King 2019-12-09 11:09:35 +0000 134) }
419a6e5e82ca0 (Russell King 2019-12-09 11:09:35 +0000 135)
419a6e5e82ca0 (Russell King 2019-12-09 11:09:35 +0000 136) dir->nr_buffers++;
419a6e5e82ca0 (Russell King 2019-12-09 11:09:35 +0000 137) }
419a6e5e82ca0 (Russell King 2019-12-09 11:09:35 +0000 138) return 0;
419a6e5e82ca0 (Russell King 2019-12-09 11:09:35 +0000 139)
419a6e5e82ca0 (Russell King 2019-12-09 11:09:35 +0000 140) error:
419a6e5e82ca0 (Russell King 2019-12-09 11:09:35 +0000 141) adfs_dir_relse(dir);
419a6e5e82ca0 (Russell King 2019-12-09 11:09:35 +0000 142)
419a6e5e82ca0 (Russell King 2019-12-09 11:09:35 +0000 143) return -EIO;
419a6e5e82ca0 (Russell King 2019-12-09 11:09:35 +0000 144) }
419a6e5e82ca0 (Russell King 2019-12-09 11:09:35 +0000 145)
95fbadbb5566e (Russell King 2019-12-09 11:09:15 +0000 146) static int adfs_dir_read(struct super_block *sb, u32 indaddr,
95fbadbb5566e (Russell King 2019-12-09 11:09:15 +0000 147) unsigned int size, struct adfs_dir *dir)
95fbadbb5566e (Russell King 2019-12-09 11:09:15 +0000 148) {
95fbadbb5566e (Russell King 2019-12-09 11:09:15 +0000 149) dir->sb = sb;
95fbadbb5566e (Russell King 2019-12-09 11:09:15 +0000 150) dir->bhs = dir->bh;
95fbadbb5566e (Russell King 2019-12-09 11:09:15 +0000 151) dir->nr_buffers = 0;
95fbadbb5566e (Russell King 2019-12-09 11:09:15 +0000 152)
95fbadbb5566e (Russell King 2019-12-09 11:09:15 +0000 153) return ADFS_SB(sb)->s_dir->read(sb, indaddr, size, dir);
95fbadbb5566e (Russell King 2019-12-09 11:09:15 +0000 154) }
95fbadbb5566e (Russell King 2019-12-09 11:09:15 +0000 155)
90011c7ad999c (Russell King 2019-12-09 11:09:40 +0000 156) static int adfs_dir_read_inode(struct super_block *sb, struct inode *inode,
90011c7ad999c (Russell King 2019-12-09 11:09:40 +0000 157) struct adfs_dir *dir)
90011c7ad999c (Russell King 2019-12-09 11:09:40 +0000 158) {
90011c7ad999c (Russell King 2019-12-09 11:09:40 +0000 159) int ret;
90011c7ad999c (Russell King 2019-12-09 11:09:40 +0000 160)
25e5d4df3b46a (Russell King 2019-12-09 11:11:38 +0000 161) ret = adfs_dir_read(sb, ADFS_I(inode)->indaddr, inode->i_size, dir);
90011c7ad999c (Russell King 2019-12-09 11:09:40 +0000 162) if (ret)
90011c7ad999c (Russell King 2019-12-09 11:09:40 +0000 163) return ret;
90011c7ad999c (Russell King 2019-12-09 11:09:40 +0000 164)
90011c7ad999c (Russell King 2019-12-09 11:09:40 +0000 165) if (ADFS_I(inode)->parent_id != dir->parent_id) {
90011c7ad999c (Russell King 2019-12-09 11:09:40 +0000 166) adfs_error(sb,
90011c7ad999c (Russell King 2019-12-09 11:09:40 +0000 167) "parent directory id changed under me! (%06x but got %06x)\n",
90011c7ad999c (Russell King 2019-12-09 11:09:40 +0000 168) ADFS_I(inode)->parent_id, dir->parent_id);
90011c7ad999c (Russell King 2019-12-09 11:09:40 +0000 169) adfs_dir_relse(dir);
90011c7ad999c (Russell King 2019-12-09 11:09:40 +0000 170) ret = -EIO;
90011c7ad999c (Russell King 2019-12-09 11:09:40 +0000 171) }
90011c7ad999c (Russell King 2019-12-09 11:09:40 +0000 172)
90011c7ad999c (Russell King 2019-12-09 11:09:40 +0000 173) return ret;
90011c7ad999c (Russell King 2019-12-09 11:09:40 +0000 174) }
90011c7ad999c (Russell King 2019-12-09 11:09:40 +0000 175)
c3c8149b3552b (Russell King 2019-12-09 11:09:45 +0000 176) static void adfs_dir_mark_dirty(struct adfs_dir *dir)
c3c8149b3552b (Russell King 2019-12-09 11:09:45 +0000 177) {
c3c8149b3552b (Russell King 2019-12-09 11:09:45 +0000 178) unsigned int i;
c3c8149b3552b (Russell King 2019-12-09 11:09:45 +0000 179)
c3c8149b3552b (Russell King 2019-12-09 11:09:45 +0000 180) /* Mark the buffers dirty */
c3c8149b3552b (Russell King 2019-12-09 11:09:45 +0000 181) for (i = 0; i < dir->nr_buffers; i++)
c3c8149b3552b (Russell King 2019-12-09 11:09:45 +0000 182) mark_buffer_dirty(dir->bhs[i]);
c3c8149b3552b (Russell King 2019-12-09 11:09:45 +0000 183) }
c3c8149b3552b (Russell King 2019-12-09 11:09:45 +0000 184)
acf5f0be8a520 (Russell King 2019-12-09 11:09:25 +0000 185) static int adfs_dir_sync(struct adfs_dir *dir)
acf5f0be8a520 (Russell King 2019-12-09 11:09:25 +0000 186) {
acf5f0be8a520 (Russell King 2019-12-09 11:09:25 +0000 187) int err = 0;
acf5f0be8a520 (Russell King 2019-12-09 11:09:25 +0000 188) int i;
acf5f0be8a520 (Russell King 2019-12-09 11:09:25 +0000 189)
acf5f0be8a520 (Russell King 2019-12-09 11:09:25 +0000 190) for (i = dir->nr_buffers - 1; i >= 0; i--) {
acf5f0be8a520 (Russell King 2019-12-09 11:09:25 +0000 191) struct buffer_head *bh = dir->bhs[i];
acf5f0be8a520 (Russell King 2019-12-09 11:09:25 +0000 192) sync_dirty_buffer(bh);
acf5f0be8a520 (Russell King 2019-12-09 11:09:25 +0000 193) if (buffer_req(bh) && !buffer_uptodate(bh))
acf5f0be8a520 (Russell King 2019-12-09 11:09:25 +0000 194) err = -EIO;
acf5f0be8a520 (Russell King 2019-12-09 11:09:25 +0000 195) }
acf5f0be8a520 (Russell King 2019-12-09 11:09:25 +0000 196)
acf5f0be8a520 (Russell King 2019-12-09 11:09:25 +0000 197) return err;
acf5f0be8a520 (Russell King 2019-12-09 11:09:25 +0000 198) }
acf5f0be8a520 (Russell King 2019-12-09 11:09:25 +0000 199)
411c49bcf32d3 (Russell King 2019-03-24 12:57:32 +0000 200) void adfs_object_fixup(struct adfs_dir *dir, struct object_info *obj)
411c49bcf32d3 (Russell King 2019-03-24 12:57:32 +0000 201) {
fc722a0429f4e (Russell King 2019-03-24 14:00:35 +0000 202) unsigned int dots, i;
adb514a4e0f6d (Russell King 2019-03-24 13:22:28 +0000 203)
adb514a4e0f6d (Russell King 2019-03-24 13:22:28 +0000 204) /*
adb514a4e0f6d (Russell King 2019-03-24 13:22:28 +0000 205) * RISC OS allows the use of '/' in directory entry names, so we need
adb514a4e0f6d (Russell King 2019-03-24 13:22:28 +0000 206) * to fix these up. '/' is typically used for FAT compatibility to
adb514a4e0f6d (Russell King 2019-03-24 13:22:28 +0000 207) * represent '.', so do the same conversion here. In any case, '.'
adb514a4e0f6d (Russell King 2019-03-24 13:22:28 +0000 208) * will never be in a RISC OS name since it is used as the pathname
fc722a0429f4e (Russell King 2019-03-24 14:00:35 +0000 209) * separator. Handle the case where we may generate a '.' or '..'
fc722a0429f4e (Russell King 2019-03-24 14:00:35 +0000 210) * name, replacing the first character with '^' (the RISC OS "parent
fc722a0429f4e (Russell King 2019-03-24 14:00:35 +0000 211) * directory" character.)
adb514a4e0f6d (Russell King 2019-03-24 13:22:28 +0000 212) */
fc722a0429f4e (Russell King 2019-03-24 14:00:35 +0000 213) for (i = dots = 0; i < obj->name_len; i++)
fc722a0429f4e (Russell King 2019-03-24 14:00:35 +0000 214) if (obj->name[i] == '/') {
adb514a4e0f6d (Russell King 2019-03-24 13:22:28 +0000 215) obj->name[i] = '.';
fc722a0429f4e (Russell King 2019-03-24 14:00:35 +0000 216) dots++;
fc722a0429f4e (Russell King 2019-03-24 14:00:35 +0000 217) }
fc722a0429f4e (Russell King 2019-03-24 14:00:35 +0000 218)
fc722a0429f4e (Russell King 2019-03-24 14:00:35 +0000 219) if (obj->name_len <= 2 && dots == obj->name_len)
fc722a0429f4e (Russell King 2019-03-24 14:00:35 +0000 220) obj->name[0] = '^';
adb514a4e0f6d (Russell King 2019-03-24 13:22:28 +0000 221)
411c49bcf32d3 (Russell King 2019-03-24 12:57:32 +0000 222) /*
b4ed8f75c8287 (Russell King 2019-06-04 14:50:24 +0100 223) * If the object is a file, and the user requested the ,xyz hex
b4ed8f75c8287 (Russell King 2019-06-04 14:50:24 +0100 224) * filetype suffix to the name, check the filetype and append.
411c49bcf32d3 (Russell King 2019-03-24 12:57:32 +0000 225) */
b4ed8f75c8287 (Russell King 2019-06-04 14:50:24 +0100 226) if (!(obj->attr & ADFS_NDA_DIRECTORY) && ADFS_SB(dir->sb)->s_ftsuffix) {
b4ed8f75c8287 (Russell King 2019-06-04 14:50:24 +0100 227) u16 filetype = adfs_filetype(obj->loadaddr);
5f8de4875c352 (Russell King 2019-03-24 13:08:41 +0000 228)
b4ed8f75c8287 (Russell King 2019-06-04 14:50:24 +0100 229) if (filetype != ADFS_FILETYPE_NONE) {
5f8de4875c352 (Russell King 2019-03-24 13:08:41 +0000 230) obj->name[obj->name_len++] = ',';
5f8de4875c352 (Russell King 2019-03-24 13:08:41 +0000 231) obj->name[obj->name_len++] = hex_asc_lo(filetype >> 8);
5f8de4875c352 (Russell King 2019-03-24 13:08:41 +0000 232) obj->name[obj->name_len++] = hex_asc_lo(filetype >> 4);
5f8de4875c352 (Russell King 2019-03-24 13:08:41 +0000 233) obj->name[obj->name_len++] = hex_asc_lo(filetype >> 0);
5f8de4875c352 (Russell King 2019-03-24 13:08:41 +0000 234) }
411c49bcf32d3 (Russell King 2019-03-24 12:57:32 +0000 235) }
411c49bcf32d3 (Russell King 2019-03-24 12:57:32 +0000 236) }
411c49bcf32d3 (Russell King 2019-03-24 12:57:32 +0000 237)
cdc46e99e1c9f (Russell King 2019-12-09 11:10:11 +0000 238) static int adfs_iterate(struct file *file, struct dir_context *ctx)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 239) {
2638ffbac9e2f (Al Viro 2013-05-17 17:30:10 -0400 240) struct inode *inode = file_inode(file);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 241) struct super_block *sb = inode->i_sb;
0125f504ed320 (Julia Lawall 2015-11-21 16:15:37 +0100 242) const struct adfs_dir_ops *ops = ADFS_SB(sb)->s_dir;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 243) struct adfs_dir dir;
4287e4deb1280 (Russell King 2019-12-09 11:10:16 +0000 244) int ret;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 245)
deed1bfd150c7 (Russell King 2019-12-09 11:09:51 +0000 246) down_read(&adfs_dir_rwsem);
90011c7ad999c (Russell King 2019-12-09 11:09:40 +0000 247) ret = adfs_dir_read_inode(sb, inode, &dir);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 248) if (ret)
deed1bfd150c7 (Russell King 2019-12-09 11:09:51 +0000 249) goto unlock;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 250)
2638ffbac9e2f (Al Viro 2013-05-17 17:30:10 -0400 251) if (ctx->pos == 0) {
2638ffbac9e2f (Al Viro 2013-05-17 17:30:10 -0400 252) if (!dir_emit_dot(file, ctx))
deed1bfd150c7 (Russell King 2019-12-09 11:09:51 +0000 253) goto unlock_relse;
2638ffbac9e2f (Al Viro 2013-05-17 17:30:10 -0400 254) ctx->pos = 1;
2638ffbac9e2f (Al Viro 2013-05-17 17:30:10 -0400 255) }
2638ffbac9e2f (Al Viro 2013-05-17 17:30:10 -0400 256) if (ctx->pos == 1) {
2638ffbac9e2f (Al Viro 2013-05-17 17:30:10 -0400 257) if (!dir_emit(ctx, "..", 2, dir.parent_id, DT_DIR))
deed1bfd150c7 (Russell King 2019-12-09 11:09:51 +0000 258) goto unlock_relse;
2638ffbac9e2f (Al Viro 2013-05-17 17:30:10 -0400 259) ctx->pos = 2;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 260) }
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 261)
4287e4deb1280 (Russell King 2019-12-09 11:10:16 +0000 262) ret = ops->iterate(&dir, ctx);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 263)
deed1bfd150c7 (Russell King 2019-12-09 11:09:51 +0000 264) unlock_relse:
deed1bfd150c7 (Russell King 2019-12-09 11:09:51 +0000 265) up_read(&adfs_dir_rwsem);
1dd9f5babfd95 (Russell King 2019-12-09 11:09:20 +0000 266) adfs_dir_relse(&dir);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 267) return ret;
deed1bfd150c7 (Russell King 2019-12-09 11:09:51 +0000 268)
deed1bfd150c7 (Russell King 2019-12-09 11:09:51 +0000 269) unlock:
deed1bfd150c7 (Russell King 2019-12-09 11:09:51 +0000 270) up_read(&adfs_dir_rwsem);
deed1bfd150c7 (Russell King 2019-12-09 11:09:51 +0000 271) return ret;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 272) }
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 273)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 274) int
ffdc9064f8b4f (Al Viro 2009-06-08 00:44:42 -0400 275) adfs_dir_update(struct super_block *sb, struct object_info *obj, int wait)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 276) {
0125f504ed320 (Julia Lawall 2015-11-21 16:15:37 +0100 277) const struct adfs_dir_ops *ops = ADFS_SB(sb)->s_dir;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 278) struct adfs_dir dir;
4a0a88b6660b4 (Russell King 2019-12-09 11:10:06 +0000 279) int ret;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 280)
4a0a88b6660b4 (Russell King 2019-12-09 11:10:06 +0000 281) if (!IS_ENABLED(CONFIG_ADFS_FS_RW))
4a0a88b6660b4 (Russell King 2019-12-09 11:10:06 +0000 282) return -EINVAL;
4a0a88b6660b4 (Russell King 2019-12-09 11:10:06 +0000 283)
acf5f0be8a520 (Russell King 2019-12-09 11:09:25 +0000 284) if (!ops->update)
acf5f0be8a520 (Russell King 2019-12-09 11:09:25 +0000 285) return -EINVAL;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 286)
deed1bfd150c7 (Russell King 2019-12-09 11:09:51 +0000 287) down_write(&adfs_dir_rwsem);
95fbadbb5566e (Russell King 2019-12-09 11:09:15 +0000 288) ret = adfs_dir_read(sb, obj->parent_id, 0, &dir);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 289) if (ret)
deed1bfd150c7 (Russell King 2019-12-09 11:09:51 +0000 290) goto unlock;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 291)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 292) ret = ops->update(&dir, obj);
aacc954c1be89 (Russell King 2019-12-09 11:10:47 +0000 293) if (ret)
aacc954c1be89 (Russell King 2019-12-09 11:10:47 +0000 294) goto forget;
aacc954c1be89 (Russell King 2019-12-09 11:10:47 +0000 295)
aacc954c1be89 (Russell King 2019-12-09 11:10:47 +0000 296) ret = ops->commit(&dir);
f6075c7907437 (Russell King 2019-12-09 11:10:01 +0000 297) if (ret)
f6075c7907437 (Russell King 2019-12-09 11:10:01 +0000 298) goto forget;
deed1bfd150c7 (Russell King 2019-12-09 11:09:51 +0000 299) up_write(&adfs_dir_rwsem);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 300)
f6075c7907437 (Russell King 2019-12-09 11:10:01 +0000 301) adfs_dir_mark_dirty(&dir);
c3c8149b3552b (Russell King 2019-12-09 11:09:45 +0000 302)
f6075c7907437 (Russell King 2019-12-09 11:10:01 +0000 303) if (wait)
f6075c7907437 (Russell King 2019-12-09 11:10:01 +0000 304) ret = adfs_dir_sync(&dir);
ffdc9064f8b4f (Al Viro 2009-06-08 00:44:42 -0400 305)
1dd9f5babfd95 (Russell King 2019-12-09 11:09:20 +0000 306) adfs_dir_relse(&dir);
deed1bfd150c7 (Russell King 2019-12-09 11:09:51 +0000 307) return ret;
deed1bfd150c7 (Russell King 2019-12-09 11:09:51 +0000 308)
f6075c7907437 (Russell King 2019-12-09 11:10:01 +0000 309) /*
f6075c7907437 (Russell King 2019-12-09 11:10:01 +0000 310) * If the updated failed because the entry wasn't found, we can
f6075c7907437 (Russell King 2019-12-09 11:10:01 +0000 311) * just release the buffers. If it was any other error, forget
f6075c7907437 (Russell King 2019-12-09 11:10:01 +0000 312) * the dirtied buffers so they aren't written back to the media.
f6075c7907437 (Russell King 2019-12-09 11:10:01 +0000 313) */
f6075c7907437 (Russell King 2019-12-09 11:10:01 +0000 314) forget:
f6075c7907437 (Russell King 2019-12-09 11:10:01 +0000 315) if (ret == -ENOENT)
f6075c7907437 (Russell King 2019-12-09 11:10:01 +0000 316) adfs_dir_relse(&dir);
f6075c7907437 (Russell King 2019-12-09 11:10:01 +0000 317) else
f6075c7907437 (Russell King 2019-12-09 11:10:01 +0000 318) adfs_dir_forget(&dir);
deed1bfd150c7 (Russell King 2019-12-09 11:09:51 +0000 319) unlock:
deed1bfd150c7 (Russell King 2019-12-09 11:09:51 +0000 320) up_write(&adfs_dir_rwsem);
4a0a88b6660b4 (Russell King 2019-12-09 11:10:06 +0000 321)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 322) return ret;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 323) }
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 324)
525715d0161f3 (Russell King 2019-03-24 12:22:04 +0000 325) static unsigned char adfs_tolower(unsigned char c)
525715d0161f3 (Russell King 2019-03-24 12:22:04 +0000 326) {
525715d0161f3 (Russell King 2019-03-24 12:22:04 +0000 327) if (c >= 'A' && c <= 'Z')
525715d0161f3 (Russell King 2019-03-24 12:22:04 +0000 328) c += 'a' - 'A';
525715d0161f3 (Russell King 2019-03-24 12:22:04 +0000 329) return c;
525715d0161f3 (Russell King 2019-03-24 12:22:04 +0000 330) }
525715d0161f3 (Russell King 2019-03-24 12:22:04 +0000 331)
1e504cf85dddb (Russell King 2019-03-24 10:54:03 +0000 332) static int __adfs_compare(const unsigned char *qstr, u32 qlen,
1e504cf85dddb (Russell King 2019-03-24 10:54:03 +0000 333) const char *str, u32 len)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 334) {
1e504cf85dddb (Russell King 2019-03-24 10:54:03 +0000 335) u32 i;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 336)
1e504cf85dddb (Russell King 2019-03-24 10:54:03 +0000 337) if (qlen != len)
1e504cf85dddb (Russell King 2019-03-24 10:54:03 +0000 338) return 1;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 339)
525715d0161f3 (Russell King 2019-03-24 12:22:04 +0000 340) for (i = 0; i < qlen; i++)
525715d0161f3 (Russell King 2019-03-24 12:22:04 +0000 341) if (adfs_tolower(qstr[i]) != adfs_tolower(str[i]))
1e504cf85dddb (Russell King 2019-03-24 10:54:03 +0000 342) return 1;
525715d0161f3 (Russell King 2019-03-24 12:22:04 +0000 343)
1e504cf85dddb (Russell King 2019-03-24 10:54:03 +0000 344) return 0;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 345) }
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 346)
1e504cf85dddb (Russell King 2019-03-24 10:54:03 +0000 347) static int adfs_dir_lookup_byname(struct inode *inode, const struct qstr *qstr,
1e504cf85dddb (Russell King 2019-03-24 10:54:03 +0000 348) struct object_info *obj)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 349) {
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 350) struct super_block *sb = inode->i_sb;
0125f504ed320 (Julia Lawall 2015-11-21 16:15:37 +0100 351) const struct adfs_dir_ops *ops = ADFS_SB(sb)->s_dir;
1e504cf85dddb (Russell King 2019-03-24 10:54:03 +0000 352) const unsigned char *name;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 353) struct adfs_dir dir;
1e504cf85dddb (Russell King 2019-03-24 10:54:03 +0000 354) u32 name_len;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 355) int ret;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 356)
deed1bfd150c7 (Russell King 2019-12-09 11:09:51 +0000 357) down_read(&adfs_dir_rwsem);
90011c7ad999c (Russell King 2019-12-09 11:09:40 +0000 358) ret = adfs_dir_read_inode(sb, inode, &dir);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 359) if (ret)
deed1bfd150c7 (Russell King 2019-12-09 11:09:51 +0000 360) goto unlock;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 361)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 362) ret = ops->setpos(&dir, 0);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 363) if (ret)
deed1bfd150c7 (Russell King 2019-12-09 11:09:51 +0000 364) goto unlock_relse;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 365)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 366) ret = -ENOENT;
1e504cf85dddb (Russell King 2019-03-24 10:54:03 +0000 367) name = qstr->name;
1e504cf85dddb (Russell King 2019-03-24 10:54:03 +0000 368) name_len = qstr->len;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 369) while (ops->getnext(&dir, obj) == 0) {
1e504cf85dddb (Russell King 2019-03-24 10:54:03 +0000 370) if (!__adfs_compare(name, name_len, obj->name, obj->name_len)) {
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 371) ret = 0;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 372) break;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 373) }
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 374) }
25e5d4df3b46a (Russell King 2019-12-09 11:11:38 +0000 375) obj->parent_id = ADFS_I(inode)->indaddr;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 376)
deed1bfd150c7 (Russell King 2019-12-09 11:09:51 +0000 377) unlock_relse:
deed1bfd150c7 (Russell King 2019-12-09 11:09:51 +0000 378) up_read(&adfs_dir_rwsem);
1dd9f5babfd95 (Russell King 2019-12-09 11:09:20 +0000 379) adfs_dir_relse(&dir);
deed1bfd150c7 (Russell King 2019-12-09 11:09:51 +0000 380) return ret;
deed1bfd150c7 (Russell King 2019-12-09 11:09:51 +0000 381)
deed1bfd150c7 (Russell King 2019-12-09 11:09:51 +0000 382) unlock:
deed1bfd150c7 (Russell King 2019-12-09 11:09:51 +0000 383) up_read(&adfs_dir_rwsem);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 384) return ret;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 385) }
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 386)
4b6f5d20b04dc (Arjan van de Ven 2006-03-28 01:56:42 -0800 387) const struct file_operations adfs_dir_operations = {
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 388) .read = generic_read_dir,
59af1584bf338 (Al Viro 2008-08-24 07:24:41 -0400 389) .llseek = generic_file_llseek,
cdc46e99e1c9f (Russell King 2019-12-09 11:10:11 +0000 390) .iterate_shared = adfs_iterate,
1b061d9247f71 (Christoph Hellwig 2010-05-26 17:53:41 +0200 391) .fsync = generic_file_fsync,
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 392) };
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 393)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 394) static int
da53be12bbb4f (Linus Torvalds 2013-05-21 15:22:44 -0700 395) adfs_hash(const struct dentry *parent, struct qstr *qstr)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 396) {
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 397) const unsigned char *name;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 398) unsigned long hash;
2eb0684f97712 (Russell King 2019-03-24 11:02:02 +0000 399) u32 len;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 400)
2eb0684f97712 (Russell King 2019-03-24 11:02:02 +0000 401) if (qstr->len > ADFS_SB(parent->d_sb)->s_namelen)
2eb0684f97712 (Russell King 2019-03-24 11:02:02 +0000 402) return -ENAMETOOLONG;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 403)
2eb0684f97712 (Russell King 2019-03-24 11:02:02 +0000 404) len = qstr->len;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 405) name = qstr->name;
8387ff2577eb9 (Linus Torvalds 2016-06-10 07:51:30 -0700 406) hash = init_name_hash(parent);
2eb0684f97712 (Russell King 2019-03-24 11:02:02 +0000 407) while (len--)
525715d0161f3 (Russell King 2019-03-24 12:22:04 +0000 408) hash = partial_name_hash(adfs_tolower(*name++), hash);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 409) qstr->hash = end_name_hash(hash);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 410)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 411) return 0;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 412) }
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 413)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 414) /*
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 415) * Compare two names, taking note of the name length
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 416) * requirements of the underlying filesystem.
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 417) */
1e504cf85dddb (Russell King 2019-03-24 10:54:03 +0000 418) static int adfs_compare(const struct dentry *dentry, unsigned int len,
1e504cf85dddb (Russell King 2019-03-24 10:54:03 +0000 419) const char *str, const struct qstr *qstr)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 420) {
1e504cf85dddb (Russell King 2019-03-24 10:54:03 +0000 421) return __adfs_compare(qstr->name, qstr->len, str, len);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 422) }
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 423)
e16404ed0f3f3 (Al Viro 2009-02-20 05:55:13 +0000 424) const struct dentry_operations adfs_dentry_operations = {
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 425) .d_hash = adfs_hash,
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 426) .d_compare = adfs_compare,
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 427) };
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 428)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 429) static struct dentry *
00cd8dd3bf95f (Al Viro 2012-06-10 17:13:09 -0400 430) adfs_lookup(struct inode *dir, struct dentry *dentry, unsigned int flags)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 431) {
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 432) struct inode *inode = NULL;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 433) struct object_info obj;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 434) int error;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 435)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 436) error = adfs_dir_lookup_byname(dir, &dentry->d_name, &obj);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 437) if (error == 0) {
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 438) /*
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 439) * This only returns NULL if get_empty_inode
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 440) * fails.
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 441) */
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 442) inode = adfs_iget(dir->i_sb, &obj);
9a7dddcaffff3 (Al Viro 2018-04-30 22:57:42 -0400 443) if (!inode)
9a7dddcaffff3 (Al Viro 2018-04-30 22:57:42 -0400 444) inode = ERR_PTR(-EACCES);
9a7dddcaffff3 (Al Viro 2018-04-30 22:57:42 -0400 445) } else if (error != -ENOENT) {
9a7dddcaffff3 (Al Viro 2018-04-30 22:57:42 -0400 446) inode = ERR_PTR(error);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 447) }
9a7dddcaffff3 (Al Viro 2018-04-30 22:57:42 -0400 448) return d_splice_alias(inode, dentry);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 449) }
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 450)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 451) /*
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 452) * directories can handle most operations...
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 453) */
754661f143e70 (Arjan van de Ven 2007-02-12 00:55:38 -0800 454) const struct inode_operations adfs_dir_inode_operations = {
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 455) .lookup = adfs_lookup,
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 456) .setattr = adfs_notify_change,
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 457) };
VisionFive2 Linux kernel
StarFive Tech Linux Kernel for VisionFive (JH7110) boards (mirror)
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