Orange Pi5 kernel

^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/adfs/dir.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5)  *  Copyright (C) 1999-2000 Russell King
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7)  *  Common directory handling for ADFS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10) #include "adfs.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13)  * For future.  This should probably be per-directory.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15) static DECLARE_RWSEM(adfs_dir_rwsem);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17) int adfs_dir_copyfrom(void *dst, struct adfs_dir *dir, unsigned int offset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18) 		      size_t len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20) 	struct super_block *sb = dir->sb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21) 	unsigned int index, remain;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) 	index = offset >> sb->s_blocksize_bits;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) 	offset &= sb->s_blocksize - 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) 	remain = sb->s_blocksize - offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) 	if (index + (remain < len) >= dir->nr_buffers)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) 	if (remain < len) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) 		memcpy(dst, dir->bhs[index]->b_data + offset, remain);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) 		dst += remain;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) 		len -= remain;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) 		index += 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) 		offset = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) 	memcpy(dst, dir->bhs[index]->b_data + offset, len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) int adfs_dir_copyto(struct adfs_dir *dir, unsigned int offset, const void *src,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) 		    size_t len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) 	struct super_block *sb = dir->sb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) 	unsigned int index, remain;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) 	index = offset >> sb->s_blocksize_bits;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) 	offset &= sb->s_blocksize - 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) 	remain = sb->s_blocksize - offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) 	if (index + (remain < len) >= dir->nr_buffers)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) 	if (remain < len) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) 		memcpy(dir->bhs[index]->b_data + offset, src, remain);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) 		src += remain;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) 		len -= remain;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) 		index += 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) 		offset = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) 	memcpy(dir->bhs[index]->b_data + offset, src, len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) static void __adfs_dir_cleanup(struct adfs_dir *dir)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) 	dir->nr_buffers = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) 	if (dir->bhs != dir->bh)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) 		kfree(dir->bhs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) 	dir->bhs = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) 	dir->sb = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) void adfs_dir_relse(struct adfs_dir *dir)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) 	unsigned int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) 	for (i = 0; i < dir->nr_buffers; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) 		brelse(dir->bhs[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) 	__adfs_dir_cleanup(dir);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) static void adfs_dir_forget(struct adfs_dir *dir)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) 	unsigned int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) 	for (i = 0; i < dir->nr_buffers; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) 		bforget(dir->bhs[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) 	__adfs_dir_cleanup(dir);
^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) int adfs_dir_read_buffers(struct super_block *sb, u32 indaddr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) 			  unsigned int size, struct adfs_dir *dir)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) 	struct buffer_head **bhs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) 	unsigned int i, num;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) 	int block;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) 	num = ALIGN(size, sb->s_blocksize) >> sb->s_blocksize_bits;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) 	if (num > ARRAY_SIZE(dir->bh)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) 		/* We only allow one extension */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) 		if (dir->bhs != dir->bh)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) 			return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) 		bhs = kcalloc(num, sizeof(*bhs), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) 		if (!bhs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) 			return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) 		if (dir->nr_buffers)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) 			memcpy(bhs, dir->bhs, dir->nr_buffers * sizeof(*bhs));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) 		dir->bhs = bhs;
^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) 	for (i = dir->nr_buffers; i < num; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) 		block = __adfs_block_map(sb, indaddr, i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) 		if (!block) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) 			adfs_error(sb, "dir %06x has a hole at offset %u",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) 				   indaddr, i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) 			goto error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) 		dir->bhs[i] = sb_bread(sb, block);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) 		if (!dir->bhs[i]) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) 			adfs_error(sb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) 				   "dir %06x failed read at offset %u, mapped block 0x%08x",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) 				   indaddr, i, block);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) 			goto error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) 		dir->nr_buffers++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) 	}
^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) error:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) 	adfs_dir_relse(dir);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) 	return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) static int adfs_dir_read(struct super_block *sb, u32 indaddr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) 			 unsigned int size, struct adfs_dir *dir)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) 	dir->sb = sb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) 	dir->bhs = dir->bh;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) 	dir->nr_buffers = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) 	return ADFS_SB(sb)->s_dir->read(sb, indaddr, size, dir);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) static int adfs_dir_read_inode(struct super_block *sb, struct inode *inode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) 			       struct adfs_dir *dir)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) 	int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) 	ret = adfs_dir_read(sb, ADFS_I(inode)->indaddr, inode->i_size, dir);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) 	if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) 		return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) 	if (ADFS_I(inode)->parent_id != dir->parent_id) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) 		adfs_error(sb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) 			   "parent directory id changed under me! (%06x but got %06x)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) 			   ADFS_I(inode)->parent_id, dir->parent_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) 		adfs_dir_relse(dir);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) 		ret = -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) 	return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) static void adfs_dir_mark_dirty(struct adfs_dir *dir)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) 	unsigned int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) 	/* Mark the buffers dirty */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) 	for (i = 0; i < dir->nr_buffers; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) 		mark_buffer_dirty(dir->bhs[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) static int adfs_dir_sync(struct adfs_dir *dir)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) 	int err = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) 	int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) 	for (i = dir->nr_buffers - 1; i >= 0; i--) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) 		struct buffer_head *bh = dir->bhs[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) 		sync_dirty_buffer(bh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) 		if (buffer_req(bh) && !buffer_uptodate(bh))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) 			err = -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) 	return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) void adfs_object_fixup(struct adfs_dir *dir, struct object_info *obj)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) 	unsigned int dots, i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) 	/*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) 	 * RISC OS allows the use of '/' in directory entry names, so we need
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) 	 * to fix these up.  '/' is typically used for FAT compatibility to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) 	 * represent '.', so do the same conversion here.  In any case, '.'
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) 	 * will never be in a RISC OS name since it is used as the pathname
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) 	 * separator.  Handle the case where we may generate a '.' or '..'
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) 	 * name, replacing the first character with '^' (the RISC OS "parent
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) 	 * directory" character.)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) 	for (i = dots = 0; i < obj->name_len; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) 		if (obj->name[i] == '/') {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) 			obj->name[i] = '.';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) 			dots++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) 	if (obj->name_len <= 2 && dots == obj->name_len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) 		obj->name[0] = '^';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) 	/*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) 	 * If the object is a file, and the user requested the ,xyz hex
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) 	 * filetype suffix to the name, check the filetype and append.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) 	if (!(obj->attr & ADFS_NDA_DIRECTORY) && ADFS_SB(dir->sb)->s_ftsuffix) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) 		u16 filetype = adfs_filetype(obj->loadaddr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) 		if (filetype != ADFS_FILETYPE_NONE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) 			obj->name[obj->name_len++] = ',';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) 			obj->name[obj->name_len++] = hex_asc_lo(filetype >> 8);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) 			obj->name[obj->name_len++] = hex_asc_lo(filetype >> 4);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) 			obj->name[obj->name_len++] = hex_asc_lo(filetype >> 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) static int adfs_iterate(struct file *file, struct dir_context *ctx)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) 	struct inode *inode = file_inode(file);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) 	struct super_block *sb = inode->i_sb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) 	const struct adfs_dir_ops *ops = ADFS_SB(sb)->s_dir;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) 	struct adfs_dir dir;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) 	int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) 	down_read(&adfs_dir_rwsem);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) 	ret = adfs_dir_read_inode(sb, inode, &dir);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) 	if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) 		goto unlock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) 	if (ctx->pos == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) 		if (!dir_emit_dot(file, ctx))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) 			goto unlock_relse;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) 		ctx->pos = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) 	if (ctx->pos == 1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) 		if (!dir_emit(ctx, "..", 2, dir.parent_id, DT_DIR))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) 			goto unlock_relse;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) 		ctx->pos = 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) 	ret = ops->iterate(&dir, ctx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) unlock_relse:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) 	up_read(&adfs_dir_rwsem);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) 	adfs_dir_relse(&dir);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) 	return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) unlock:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) 	up_read(&adfs_dir_rwsem);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) 	return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) adfs_dir_update(struct super_block *sb, struct object_info *obj, int wait)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) 	const struct adfs_dir_ops *ops = ADFS_SB(sb)->s_dir;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) 	struct adfs_dir dir;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) 	int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) 	if (!IS_ENABLED(CONFIG_ADFS_FS_RW))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) 	if (!ops->update)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) 	down_write(&adfs_dir_rwsem);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) 	ret = adfs_dir_read(sb, obj->parent_id, 0, &dir);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) 	if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) 		goto unlock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) 	ret = ops->update(&dir, obj);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) 	if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) 		goto forget;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) 	ret = ops->commit(&dir);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) 	if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) 		goto forget;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) 	up_write(&adfs_dir_rwsem);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) 	adfs_dir_mark_dirty(&dir);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) 	if (wait)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) 		ret = adfs_dir_sync(&dir);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) 	adfs_dir_relse(&dir);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) 	return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) 	/*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) 	 * If the updated failed because the entry wasn't found, we can
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) 	 * just release the buffers. If it was any other error, forget
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) 	 * the dirtied buffers so they aren't written back to the media.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) forget:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) 	if (ret == -ENOENT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) 		adfs_dir_relse(&dir);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) 	else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) 		adfs_dir_forget(&dir);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) unlock:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) 	up_write(&adfs_dir_rwsem);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) 	return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) static unsigned char adfs_tolower(unsigned char c)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) 	if (c >= 'A' && c <= 'Z')
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) 		c += 'a' - 'A';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) 	return c;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) static int __adfs_compare(const unsigned char *qstr, u32 qlen,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) 			  const char *str, u32 len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) 	u32 i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) 	if (qlen != len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) 		return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) 	for (i = 0; i < qlen; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) 		if (adfs_tolower(qstr[i]) != adfs_tolower(str[i]))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) 			return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) static int adfs_dir_lookup_byname(struct inode *inode, const struct qstr *qstr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) 				  struct object_info *obj)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) 	struct super_block *sb = inode->i_sb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) 	const struct adfs_dir_ops *ops = ADFS_SB(sb)->s_dir;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) 	const unsigned char *name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) 	struct adfs_dir dir;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) 	u32 name_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) 	int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) 	down_read(&adfs_dir_rwsem);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) 	ret = adfs_dir_read_inode(sb, inode, &dir);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) 	if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) 		goto unlock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) 	ret = ops->setpos(&dir, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) 	if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) 		goto unlock_relse;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) 	ret = -ENOENT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) 	name = qstr->name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) 	name_len = qstr->len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) 	while (ops->getnext(&dir, obj) == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) 		if (!__adfs_compare(name, name_len, obj->name, obj->name_len)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) 			ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) 			break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) 	obj->parent_id = ADFS_I(inode)->indaddr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) unlock_relse:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) 	up_read(&adfs_dir_rwsem);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) 	adfs_dir_relse(&dir);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) 	return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) unlock:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) 	up_read(&adfs_dir_rwsem);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) 	return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) const struct file_operations adfs_dir_operations = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) 	.read		= generic_read_dir,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) 	.llseek		= generic_file_llseek,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) 	.iterate_shared	= adfs_iterate,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) 	.fsync		= generic_file_fsync,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) adfs_hash(const struct dentry *parent, struct qstr *qstr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) 	const unsigned char *name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) 	unsigned long hash;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) 	u32 len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) 	if (qstr->len > ADFS_SB(parent->d_sb)->s_namelen)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) 		return -ENAMETOOLONG;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) 	len = qstr->len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) 	name = qstr->name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) 	hash = init_name_hash(parent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) 	while (len--)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) 		hash = partial_name_hash(adfs_tolower(*name++), hash);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) 	qstr->hash = end_name_hash(hash);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415)  * Compare two names, taking note of the name length
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416)  * requirements of the underlying filesystem.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) static int adfs_compare(const struct dentry *dentry, unsigned int len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) 			const char *str, const struct qstr *qstr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) 	return __adfs_compare(qstr->name, qstr->len, str, len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) const struct dentry_operations adfs_dentry_operations = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) 	.d_hash		= adfs_hash,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) 	.d_compare	= adfs_compare,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) static struct dentry *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) adfs_lookup(struct inode *dir, struct dentry *dentry, unsigned int flags)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) 	struct inode *inode = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) 	struct object_info obj;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) 	int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) 	error = adfs_dir_lookup_byname(dir, &dentry->d_name, &obj);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) 	if (error == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) 		/*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) 		 * This only returns NULL if get_empty_inode
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) 		 * fails.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) 		 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) 		inode = adfs_iget(dir->i_sb, &obj);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) 		if (!inode)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) 			inode = ERR_PTR(-EACCES);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) 	} else if (error != -ENOENT) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) 		inode = ERR_PTR(error);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) 	return d_splice_alias(inode, dentry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452)  * directories can handle most operations...
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) const struct inode_operations adfs_dir_inode_operations = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) 	.lookup		= adfs_lookup,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) 	.setattr	= adfs_notify_change,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) };