Chao Yu | 6d1a832 | 2018-09-12 09:16:07 +0800 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0 |
Jaegeuk Kim | 0a8165d | 2012-11-29 13:28:09 +0900 | [diff] [blame] | 2 | /* |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 3 | * fs/f2fs/namei.c |
| 4 | * |
| 5 | * Copyright (c) 2012 Samsung Electronics Co., Ltd. |
| 6 | * http://www.samsung.com/ |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 7 | */ |
| 8 | #include <linux/fs.h> |
| 9 | #include <linux/f2fs_fs.h> |
| 10 | #include <linux/pagemap.h> |
| 11 | #include <linux/sched.h> |
| 12 | #include <linux/ctype.h> |
Jaegeuk Kim | 14d9376 | 2019-02-25 09:46:45 -0800 | [diff] [blame] | 13 | #include <linux/random.h> |
Chao Yu | 50732df | 2014-06-19 16:23:19 +0800 | [diff] [blame] | 14 | #include <linux/dcache.h> |
Jaegeuk Kim | feb7cbb | 2015-04-15 13:49:55 -0700 | [diff] [blame] | 15 | #include <linux/namei.h> |
Chao Yu | 09c3a72 | 2017-07-09 00:13:07 +0800 | [diff] [blame] | 16 | #include <linux/quotaops.h> |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 17 | |
| 18 | #include "f2fs.h" |
Jaegeuk Kim | 953a3e2 | 2013-03-21 15:21:57 +0900 | [diff] [blame] | 19 | #include "node.h" |
Daniel Rosenberg | f22f93a | 2018-08-20 19:21:43 -0700 | [diff] [blame] | 20 | #include "segment.h" |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 21 | #include "xattr.h" |
| 22 | #include "acl.h" |
Namjae Jeon | a2a4a7e | 2013-04-20 01:28:40 +0900 | [diff] [blame] | 23 | #include <trace/events/f2fs.h> |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 24 | |
| 25 | static struct inode *f2fs_new_inode(struct inode *dir, umode_t mode) |
| 26 | { |
Jaegeuk Kim | 4081363 | 2014-09-02 15:31:18 -0700 | [diff] [blame] | 27 | struct f2fs_sb_info *sbi = F2FS_I_SB(dir); |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 28 | nid_t ino; |
| 29 | struct inode *inode; |
| 30 | bool nid_free = false; |
Chao Yu | 50ffaa9 | 2017-09-06 21:59:50 +0800 | [diff] [blame] | 31 | int xattr_size = 0; |
Gu Zheng | e479556 | 2013-09-27 18:08:30 +0800 | [diff] [blame] | 32 | int err; |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 33 | |
Jaegeuk Kim | a014e03 | 2014-06-20 21:44:02 -0700 | [diff] [blame] | 34 | inode = new_inode(dir->i_sb); |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 35 | if (!inode) |
| 36 | return ERR_PTR(-ENOMEM); |
| 37 | |
Gu Zheng | e479556 | 2013-09-27 18:08:30 +0800 | [diff] [blame] | 38 | f2fs_lock_op(sbi); |
Chao Yu | 6b4d6a8 | 2018-05-30 00:20:41 +0800 | [diff] [blame] | 39 | if (!f2fs_alloc_nid(sbi, &ino)) { |
Gu Zheng | e479556 | 2013-09-27 18:08:30 +0800 | [diff] [blame] | 40 | f2fs_unlock_op(sbi); |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 41 | err = -ENOSPC; |
| 42 | goto fail; |
| 43 | } |
Gu Zheng | e479556 | 2013-09-27 18:08:30 +0800 | [diff] [blame] | 44 | f2fs_unlock_op(sbi); |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 45 | |
Chao Yu | 09c3a72 | 2017-07-09 00:13:07 +0800 | [diff] [blame] | 46 | nid_free = true; |
| 47 | |
Chao Yu | 70ff5df | 2014-05-08 17:09:30 +0800 | [diff] [blame] | 48 | inode_init_owner(inode, dir, mode); |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 49 | |
| 50 | inode->i_ino = ino; |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 51 | inode->i_blocks = 0; |
Jaegeuk Kim | b2d1e92 | 2018-10-01 10:45:32 -0700 | [diff] [blame] | 52 | inode->i_mtime = inode->i_atime = inode->i_ctime = |
| 53 | F2FS_I(inode)->i_crtime = current_time(inode); |
Jaegeuk Kim | 14d9376 | 2019-02-25 09:46:45 -0800 | [diff] [blame] | 54 | inode->i_generation = prandom_u32(); |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 55 | |
Chao Yu | 2d96ad5 | 2018-05-07 20:28:52 +0800 | [diff] [blame] | 56 | if (S_ISDIR(inode->i_mode)) |
| 57 | F2FS_I(inode)->i_current_depth = 1; |
| 58 | |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 59 | err = insert_inode_locked(inode); |
| 60 | if (err) { |
| 61 | err = -EINVAL; |
Jaegeuk Kim | a21c20f | 2015-08-16 12:38:15 -0700 | [diff] [blame] | 62 | goto fail; |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 63 | } |
Chao Yu | 622f28a | 2014-09-24 18:19:10 +0800 | [diff] [blame] | 64 | |
Chao Yu | 5b11d2b | 2018-10-24 18:34:26 +0800 | [diff] [blame] | 65 | if (f2fs_sb_has_project_quota(sbi) && |
Chao Yu | 9bafde6 | 2018-04-03 15:08:17 +0800 | [diff] [blame] | 66 | (F2FS_I(dir)->i_flags & F2FS_PROJINHERIT_FL)) |
Chao Yu | 5647b30 | 2017-07-26 00:01:41 +0800 | [diff] [blame] | 67 | F2FS_I(inode)->i_projid = F2FS_I(dir)->i_projid; |
| 68 | else |
| 69 | F2FS_I(inode)->i_projid = make_kprojid(&init_user_ns, |
| 70 | F2FS_DEF_PROJID); |
| 71 | |
Chao Yu | 09c3a72 | 2017-07-09 00:13:07 +0800 | [diff] [blame] | 72 | err = dquot_initialize(inode); |
| 73 | if (err) |
| 74 | goto fail_drop; |
| 75 | |
Daeho Jeong | 9ef5e65 | 2018-01-11 11:26:19 +0900 | [diff] [blame] | 76 | set_inode_flag(inode, FI_NEW_INODE); |
| 77 | |
Jaegeuk Kim | fcc85a4 | 2015-04-21 20:39:58 -0700 | [diff] [blame] | 78 | /* If the directory encrypted, then we should encrypt the inode. */ |
Chandan Rajendra | b62c458 | 2018-12-12 15:20:11 +0530 | [diff] [blame] | 79 | if ((IS_ENCRYPTED(dir) || DUMMY_ENCRYPTION_ENABLED(sbi)) && |
Sheng Yong | aa5bcfd | 2018-03-15 18:51:42 +0800 | [diff] [blame] | 80 | f2fs_may_encrypt(inode)) |
Jaegeuk Kim | fcc85a4 | 2015-04-21 20:39:58 -0700 | [diff] [blame] | 81 | f2fs_set_encrypted_inode(inode); |
| 82 | |
Chao Yu | 5b11d2b | 2018-10-24 18:34:26 +0800 | [diff] [blame] | 83 | if (f2fs_sb_has_extra_attr(sbi)) { |
Chao Yu | fbcf931 | 2017-07-19 00:19:06 +0800 | [diff] [blame] | 84 | set_inode_flag(inode, FI_EXTRA_ATTR); |
| 85 | F2FS_I(inode)->i_extra_isize = F2FS_TOTAL_EXTRA_ATTR_SIZE; |
| 86 | } |
| 87 | |
Jaegeuk Kim | 9194232 | 2016-05-20 10:13:22 -0700 | [diff] [blame] | 88 | if (test_opt(sbi, INLINE_XATTR)) |
| 89 | set_inode_flag(inode, FI_INLINE_XATTR); |
Chao Yu | 50ffaa9 | 2017-09-06 21:59:50 +0800 | [diff] [blame] | 90 | |
Chao Yu | fba48a8 | 2015-12-23 17:51:35 +0800 | [diff] [blame] | 91 | if (test_opt(sbi, INLINE_DATA) && f2fs_may_inline_data(inode)) |
Jaegeuk Kim | 9194232 | 2016-05-20 10:13:22 -0700 | [diff] [blame] | 92 | set_inode_flag(inode, FI_INLINE_DATA); |
Jaegeuk Kim | 01b960e | 2015-04-23 10:27:21 -0700 | [diff] [blame] | 93 | if (f2fs_may_inline_dentry(inode)) |
Jaegeuk Kim | 9194232 | 2016-05-20 10:13:22 -0700 | [diff] [blame] | 94 | set_inode_flag(inode, FI_INLINE_DENTRY); |
Chao Yu | 622f28a | 2014-09-24 18:19:10 +0800 | [diff] [blame] | 95 | |
Chao Yu | 5b11d2b | 2018-10-24 18:34:26 +0800 | [diff] [blame] | 96 | if (f2fs_sb_has_flexible_inline_xattr(sbi)) { |
Chao Yu | 50ffaa9 | 2017-09-06 21:59:50 +0800 | [diff] [blame] | 97 | f2fs_bug_on(sbi, !f2fs_has_extra_attr(inode)); |
| 98 | if (f2fs_has_inline_xattr(inode)) |
Chao Yu | e9a50e6 | 2018-03-08 14:22:56 +0800 | [diff] [blame] | 99 | xattr_size = F2FS_OPTION(sbi).inline_xattr_size; |
Chao Yu | 50ffaa9 | 2017-09-06 21:59:50 +0800 | [diff] [blame] | 100 | /* Otherwise, will be 0 */ |
| 101 | } else if (f2fs_has_inline_xattr(inode) || |
| 102 | f2fs_has_inline_dentry(inode)) { |
| 103 | xattr_size = DEFAULT_INLINE_XATTR_ADDRS; |
| 104 | } |
| 105 | F2FS_I(inode)->i_inline_xattr_size = xattr_size; |
| 106 | |
Jaegeuk Kim | 3e72f72 | 2015-06-19 17:53:26 -0700 | [diff] [blame] | 107 | f2fs_init_extent_tree(inode, NULL); |
| 108 | |
Chao Yu | d5e8f6c | 2015-07-15 17:28:53 +0800 | [diff] [blame] | 109 | stat_inc_inline_xattr(inode); |
Jaegeuk Kim | 2fb2c95 | 2015-04-30 18:58:22 -0700 | [diff] [blame] | 110 | stat_inc_inline_inode(inode); |
| 111 | stat_inc_inline_dir(inode); |
| 112 | |
Chao Yu | 5647b30 | 2017-07-26 00:01:41 +0800 | [diff] [blame] | 113 | F2FS_I(inode)->i_flags = |
| 114 | f2fs_mask_flags(mode, F2FS_I(dir)->i_flags & F2FS_FL_INHERITED); |
| 115 | |
Chao Yu | 8a7d191 | 2017-08-30 18:04:47 +0800 | [diff] [blame] | 116 | if (S_ISDIR(inode->i_mode)) |
Chao Yu | 9bafde6 | 2018-04-03 15:08:17 +0800 | [diff] [blame] | 117 | F2FS_I(inode)->i_flags |= F2FS_INDEX_FL; |
Chao Yu | 8a7d191 | 2017-08-30 18:04:47 +0800 | [diff] [blame] | 118 | |
Chao Yu | 9bafde6 | 2018-04-03 15:08:17 +0800 | [diff] [blame] | 119 | if (F2FS_I(inode)->i_flags & F2FS_PROJINHERIT_FL) |
Chao Yu | 5647b30 | 2017-07-26 00:01:41 +0800 | [diff] [blame] | 120 | set_inode_flag(inode, FI_PROJ_INHERIT); |
| 121 | |
Chao Yu | 7c37970 | 2018-10-07 19:06:15 +0800 | [diff] [blame] | 122 | f2fs_set_inode_flags(inode); |
| 123 | |
Jaegeuk Kim | d70b4f5 | 2013-04-25 13:24:33 +0900 | [diff] [blame] | 124 | trace_f2fs_new_inode(inode, 0); |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 125 | return inode; |
| 126 | |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 127 | fail: |
Jaegeuk Kim | d70b4f5 | 2013-04-25 13:24:33 +0900 | [diff] [blame] | 128 | trace_f2fs_new_inode(inode, err); |
Jaegeuk Kim | 531ad7d | 2013-04-30 11:33:27 +0900 | [diff] [blame] | 129 | make_bad_inode(inode); |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 130 | if (nid_free) |
Jaegeuk Kim | 9194232 | 2016-05-20 10:13:22 -0700 | [diff] [blame] | 131 | set_inode_flag(inode, FI_FREE_NID); |
Jaegeuk Kim | c9b63bd | 2015-06-23 10:36:08 -0700 | [diff] [blame] | 132 | iput(inode); |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 133 | return ERR_PTR(err); |
Chao Yu | 09c3a72 | 2017-07-09 00:13:07 +0800 | [diff] [blame] | 134 | fail_drop: |
| 135 | trace_f2fs_new_inode(inode, err); |
| 136 | dquot_drop(inode); |
| 137 | inode->i_flags |= S_NOQUOTA; |
| 138 | if (nid_free) |
| 139 | set_inode_flag(inode, FI_FREE_NID); |
| 140 | clear_nlink(inode); |
| 141 | unlock_new_inode(inode); |
| 142 | iput(inode); |
| 143 | return ERR_PTR(err); |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 144 | } |
| 145 | |
Park Ju Hyung | a874615 | 2019-04-17 18:57:38 +0900 | [diff] [blame] | 146 | static inline int is_extension_exist(const unsigned char *s, const char *sub) |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 147 | { |
Leon Romanovsky | 9836b8b | 2012-12-27 19:55:46 +0200 | [diff] [blame] | 148 | size_t slen = strlen(s); |
| 149 | size_t sublen = strlen(sub); |
Chao Yu | 7732c26 | 2016-09-05 12:28:27 +0800 | [diff] [blame] | 150 | int i; |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 151 | |
Chao Yu | 741a7be | 2015-07-06 20:30:40 +0800 | [diff] [blame] | 152 | /* |
| 153 | * filename format of multimedia file should be defined as: |
Chao Yu | 7732c26 | 2016-09-05 12:28:27 +0800 | [diff] [blame] | 154 | * "filename + '.' + extension + (optional: '.' + temp extension)". |
Chao Yu | 741a7be | 2015-07-06 20:30:40 +0800 | [diff] [blame] | 155 | */ |
| 156 | if (slen < sublen + 2) |
| 157 | return 0; |
| 158 | |
Chao Yu | 7732c26 | 2016-09-05 12:28:27 +0800 | [diff] [blame] | 159 | for (i = 1; i < slen - sublen; i++) { |
| 160 | if (s[i] != '.') |
| 161 | continue; |
| 162 | if (!strncasecmp(s + i + 1, sub, sublen)) |
| 163 | return 1; |
| 164 | } |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 165 | |
Chao Yu | 7732c26 | 2016-09-05 12:28:27 +0800 | [diff] [blame] | 166 | return 0; |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 167 | } |
| 168 | |
Jaegeuk Kim | 0a8165d | 2012-11-29 13:28:09 +0900 | [diff] [blame] | 169 | /* |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 170 | * Set multimedia files as cold files for hot/cold data separation |
| 171 | */ |
Chao Yu | ac734c4 | 2018-02-28 17:07:27 +0800 | [diff] [blame] | 172 | static inline void set_file_temperature(struct f2fs_sb_info *sbi, struct inode *inode, |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 173 | const unsigned char *name) |
| 174 | { |
Chao Yu | 1e72cb2 | 2018-02-26 22:04:13 +0800 | [diff] [blame] | 175 | __u8 (*extlist)[F2FS_EXTENSION_LEN] = sbi->raw_super->extension_list; |
Chao Yu | ac734c4 | 2018-02-28 17:07:27 +0800 | [diff] [blame] | 176 | int i, cold_count, hot_count; |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 177 | |
Chao Yu | 1e72cb2 | 2018-02-26 22:04:13 +0800 | [diff] [blame] | 178 | down_read(&sbi->sb_lock); |
| 179 | |
Chao Yu | ac734c4 | 2018-02-28 17:07:27 +0800 | [diff] [blame] | 180 | cold_count = le32_to_cpu(sbi->raw_super->extension_count); |
| 181 | hot_count = sbi->raw_super->hot_ext_count; |
Chao Yu | 1e72cb2 | 2018-02-26 22:04:13 +0800 | [diff] [blame] | 182 | |
Chao Yu | ac734c4 | 2018-02-28 17:07:27 +0800 | [diff] [blame] | 183 | for (i = 0; i < cold_count + hot_count; i++) { |
Chao Yu | 9d62f77 | 2018-10-04 11:15:18 +0800 | [diff] [blame] | 184 | if (is_extension_exist(name, extlist[i])) |
| 185 | break; |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 186 | } |
Chao Yu | 1e72cb2 | 2018-02-26 22:04:13 +0800 | [diff] [blame] | 187 | |
| 188 | up_read(&sbi->sb_lock); |
Chao Yu | 9d62f77 | 2018-10-04 11:15:18 +0800 | [diff] [blame] | 189 | |
| 190 | if (i == cold_count + hot_count) |
| 191 | return; |
| 192 | |
| 193 | if (i < cold_count) |
| 194 | file_set_cold(inode); |
| 195 | else |
| 196 | file_set_hot(inode); |
Chao Yu | 1e72cb2 | 2018-02-26 22:04:13 +0800 | [diff] [blame] | 197 | } |
| 198 | |
Chao Yu | 6b4d6a8 | 2018-05-30 00:20:41 +0800 | [diff] [blame] | 199 | int f2fs_update_extension_list(struct f2fs_sb_info *sbi, const char *name, |
Chao Yu | ac734c4 | 2018-02-28 17:07:27 +0800 | [diff] [blame] | 200 | bool hot, bool set) |
Chao Yu | 1e72cb2 | 2018-02-26 22:04:13 +0800 | [diff] [blame] | 201 | { |
| 202 | __u8 (*extlist)[F2FS_EXTENSION_LEN] = sbi->raw_super->extension_list; |
Chao Yu | ac734c4 | 2018-02-28 17:07:27 +0800 | [diff] [blame] | 203 | int cold_count = le32_to_cpu(sbi->raw_super->extension_count); |
| 204 | int hot_count = sbi->raw_super->hot_ext_count; |
| 205 | int total_count = cold_count + hot_count; |
| 206 | int start, count; |
Chao Yu | 1e72cb2 | 2018-02-26 22:04:13 +0800 | [diff] [blame] | 207 | int i; |
| 208 | |
Chao Yu | ac734c4 | 2018-02-28 17:07:27 +0800 | [diff] [blame] | 209 | if (set) { |
| 210 | if (total_count == F2FS_MAX_EXTENSION) |
| 211 | return -EINVAL; |
| 212 | } else { |
| 213 | if (!hot && !cold_count) |
| 214 | return -EINVAL; |
| 215 | if (hot && !hot_count) |
| 216 | return -EINVAL; |
| 217 | } |
| 218 | |
| 219 | if (hot) { |
| 220 | start = cold_count; |
| 221 | count = total_count; |
| 222 | } else { |
| 223 | start = 0; |
| 224 | count = cold_count; |
| 225 | } |
| 226 | |
| 227 | for (i = start; i < count; i++) { |
Chao Yu | 1e72cb2 | 2018-02-26 22:04:13 +0800 | [diff] [blame] | 228 | if (strcmp(name, extlist[i])) |
| 229 | continue; |
| 230 | |
| 231 | if (set) |
| 232 | return -EINVAL; |
| 233 | |
| 234 | memcpy(extlist[i], extlist[i + 1], |
Chao Yu | ac734c4 | 2018-02-28 17:07:27 +0800 | [diff] [blame] | 235 | F2FS_EXTENSION_LEN * (total_count - i - 1)); |
| 236 | memset(extlist[total_count - 1], 0, F2FS_EXTENSION_LEN); |
| 237 | if (hot) |
| 238 | sbi->raw_super->hot_ext_count = hot_count - 1; |
| 239 | else |
| 240 | sbi->raw_super->extension_count = |
| 241 | cpu_to_le32(cold_count - 1); |
Chao Yu | 1e72cb2 | 2018-02-26 22:04:13 +0800 | [diff] [blame] | 242 | return 0; |
| 243 | } |
| 244 | |
| 245 | if (!set) |
| 246 | return -EINVAL; |
| 247 | |
Chao Yu | ac734c4 | 2018-02-28 17:07:27 +0800 | [diff] [blame] | 248 | if (hot) { |
Guenter Roeck | 5c8e7ab | 2018-07-01 13:57:06 -0700 | [diff] [blame] | 249 | memcpy(extlist[count], name, strlen(name)); |
Chao Yu | ac734c4 | 2018-02-28 17:07:27 +0800 | [diff] [blame] | 250 | sbi->raw_super->hot_ext_count = hot_count + 1; |
| 251 | } else { |
| 252 | char buf[F2FS_MAX_EXTENSION][F2FS_EXTENSION_LEN]; |
Chao Yu | 1e72cb2 | 2018-02-26 22:04:13 +0800 | [diff] [blame] | 253 | |
Chao Yu | ac734c4 | 2018-02-28 17:07:27 +0800 | [diff] [blame] | 254 | memcpy(buf, &extlist[cold_count], |
| 255 | F2FS_EXTENSION_LEN * hot_count); |
| 256 | memset(extlist[cold_count], 0, F2FS_EXTENSION_LEN); |
Guenter Roeck | 5c8e7ab | 2018-07-01 13:57:06 -0700 | [diff] [blame] | 257 | memcpy(extlist[cold_count], name, strlen(name)); |
Chao Yu | ac734c4 | 2018-02-28 17:07:27 +0800 | [diff] [blame] | 258 | memcpy(&extlist[cold_count + 1], buf, |
| 259 | F2FS_EXTENSION_LEN * hot_count); |
| 260 | sbi->raw_super->extension_count = cpu_to_le32(cold_count + 1); |
| 261 | } |
Chao Yu | 1e72cb2 | 2018-02-26 22:04:13 +0800 | [diff] [blame] | 262 | return 0; |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 263 | } |
| 264 | |
| 265 | static int f2fs_create(struct inode *dir, struct dentry *dentry, umode_t mode, |
| 266 | bool excl) |
| 267 | { |
Jaegeuk Kim | 4081363 | 2014-09-02 15:31:18 -0700 | [diff] [blame] | 268 | struct f2fs_sb_info *sbi = F2FS_I_SB(dir); |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 269 | struct inode *inode; |
| 270 | nid_t ino = 0; |
Gu Zheng | e479556 | 2013-09-27 18:08:30 +0800 | [diff] [blame] | 271 | int err; |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 272 | |
Jaegeuk Kim | 6663422 | 2017-10-23 23:48:49 +0200 | [diff] [blame] | 273 | if (unlikely(f2fs_cp_error(sbi))) |
| 274 | return -EIO; |
Daniel Rosenberg | f22f93a | 2018-08-20 19:21:43 -0700 | [diff] [blame] | 275 | err = f2fs_is_checkpoint_ready(sbi); |
| 276 | if (err) |
| 277 | return err; |
Jaegeuk Kim | 6663422 | 2017-10-23 23:48:49 +0200 | [diff] [blame] | 278 | |
Chao Yu | 09c3a72 | 2017-07-09 00:13:07 +0800 | [diff] [blame] | 279 | err = dquot_initialize(dir); |
| 280 | if (err) |
| 281 | return err; |
| 282 | |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 283 | inode = f2fs_new_inode(dir, mode); |
| 284 | if (IS_ERR(inode)) |
| 285 | return PTR_ERR(inode); |
| 286 | |
| 287 | if (!test_opt(sbi, DISABLE_EXT_IDENTIFY)) |
Chao Yu | ac734c4 | 2018-02-28 17:07:27 +0800 | [diff] [blame] | 288 | set_file_temperature(sbi, inode, dentry->d_name.name); |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 289 | |
| 290 | inode->i_op = &f2fs_file_inode_operations; |
| 291 | inode->i_fop = &f2fs_file_operations; |
| 292 | inode->i_mapping->a_ops = &f2fs_dblock_aops; |
| 293 | ino = inode->i_ino; |
| 294 | |
Gu Zheng | e479556 | 2013-09-27 18:08:30 +0800 | [diff] [blame] | 295 | f2fs_lock_op(sbi); |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 296 | err = f2fs_add_link(dentry, inode); |
| 297 | if (err) |
| 298 | goto out; |
Jaegeuk Kim | 44c1615 | 2014-09-25 11:55:53 -0700 | [diff] [blame] | 299 | f2fs_unlock_op(sbi); |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 300 | |
Chao Yu | 6b4d6a8 | 2018-05-30 00:20:41 +0800 | [diff] [blame] | 301 | f2fs_alloc_nid_done(sbi, ino); |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 302 | |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 303 | unlock_new_inode(inode); |
Eric Biggers | e605f83 | 2018-04-18 15:48:42 -0700 | [diff] [blame] | 304 | d_instantiate(dentry, inode); |
Jaegeuk Kim | b7e1d80 | 2014-11-09 22:15:31 -0800 | [diff] [blame] | 305 | |
| 306 | if (IS_DIRSYNC(dir)) |
| 307 | f2fs_sync_fs(sbi->sb, 1); |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 308 | |
| 309 | f2fs_balance_fs(sbi, true); |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 310 | return 0; |
| 311 | out: |
Chao Yu | 6b4d6a8 | 2018-05-30 00:20:41 +0800 | [diff] [blame] | 312 | f2fs_handle_failed_inode(inode); |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 313 | return err; |
| 314 | } |
| 315 | |
| 316 | static int f2fs_link(struct dentry *old_dentry, struct inode *dir, |
| 317 | struct dentry *dentry) |
| 318 | { |
David Howells | 2b0143b | 2015-03-17 22:25:59 +0000 | [diff] [blame] | 319 | struct inode *inode = d_inode(old_dentry); |
Jaegeuk Kim | 4081363 | 2014-09-02 15:31:18 -0700 | [diff] [blame] | 320 | struct f2fs_sb_info *sbi = F2FS_I_SB(dir); |
Gu Zheng | e479556 | 2013-09-27 18:08:30 +0800 | [diff] [blame] | 321 | int err; |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 322 | |
Jaegeuk Kim | 6663422 | 2017-10-23 23:48:49 +0200 | [diff] [blame] | 323 | if (unlikely(f2fs_cp_error(sbi))) |
| 324 | return -EIO; |
Daniel Rosenberg | f22f93a | 2018-08-20 19:21:43 -0700 | [diff] [blame] | 325 | err = f2fs_is_checkpoint_ready(sbi); |
| 326 | if (err) |
| 327 | return err; |
Jaegeuk Kim | 6663422 | 2017-10-23 23:48:49 +0200 | [diff] [blame] | 328 | |
Eric Biggers | d5382cc | 2017-11-29 12:35:29 -0800 | [diff] [blame] | 329 | err = fscrypt_prepare_link(old_dentry, dir, dentry); |
| 330 | if (err) |
| 331 | return err; |
Jaegeuk Kim | fcc85a4 | 2015-04-21 20:39:58 -0700 | [diff] [blame] | 332 | |
Chao Yu | 5647b30 | 2017-07-26 00:01:41 +0800 | [diff] [blame] | 333 | if (is_inode_flag_set(dir, FI_PROJ_INHERIT) && |
| 334 | (!projid_eq(F2FS_I(dir)->i_projid, |
| 335 | F2FS_I(old_dentry->d_inode)->i_projid))) |
| 336 | return -EXDEV; |
| 337 | |
Chao Yu | 09c3a72 | 2017-07-09 00:13:07 +0800 | [diff] [blame] | 338 | err = dquot_initialize(dir); |
| 339 | if (err) |
| 340 | return err; |
| 341 | |
Jaegeuk Kim | 2c4db1a | 2016-01-07 14:15:04 -0800 | [diff] [blame] | 342 | f2fs_balance_fs(sbi, true); |
Jaegeuk Kim | 1efef83 | 2012-12-19 16:25:21 +0900 | [diff] [blame] | 343 | |
Deepa Dinamani | 078cd82 | 2016-09-14 07:48:04 -0700 | [diff] [blame] | 344 | inode->i_ctime = current_time(inode); |
Jaegeuk Kim | 6f6fd83 | 2013-05-22 12:06:26 +0900 | [diff] [blame] | 345 | ihold(inode); |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 346 | |
Jaegeuk Kim | 9194232 | 2016-05-20 10:13:22 -0700 | [diff] [blame] | 347 | set_inode_flag(inode, FI_INC_LINK); |
Gu Zheng | e479556 | 2013-09-27 18:08:30 +0800 | [diff] [blame] | 348 | f2fs_lock_op(sbi); |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 349 | err = f2fs_add_link(dentry, inode); |
| 350 | if (err) |
| 351 | goto out; |
Jaegeuk Kim | 44c1615 | 2014-09-25 11:55:53 -0700 | [diff] [blame] | 352 | f2fs_unlock_op(sbi); |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 353 | |
| 354 | d_instantiate(dentry, inode); |
Jaegeuk Kim | b7e1d80 | 2014-11-09 22:15:31 -0800 | [diff] [blame] | 355 | |
| 356 | if (IS_DIRSYNC(dir)) |
| 357 | f2fs_sync_fs(sbi->sb, 1); |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 358 | return 0; |
| 359 | out: |
Jaegeuk Kim | 9194232 | 2016-05-20 10:13:22 -0700 | [diff] [blame] | 360 | clear_inode_flag(inode, FI_INC_LINK); |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 361 | iput(inode); |
Jaegeuk Kim | 44c1615 | 2014-09-25 11:55:53 -0700 | [diff] [blame] | 362 | f2fs_unlock_op(sbi); |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 363 | return err; |
| 364 | } |
| 365 | |
| 366 | struct dentry *f2fs_get_parent(struct dentry *child) |
| 367 | { |
| 368 | struct qstr dotdot = QSTR_INIT("..", 2); |
Chao Yu | 91246c2 | 2016-07-19 08:27:47 +0800 | [diff] [blame] | 369 | struct page *page; |
| 370 | unsigned long ino = f2fs_inode_by_name(d_inode(child), &dotdot, &page); |
| 371 | if (!ino) { |
| 372 | if (IS_ERR(page)) |
| 373 | return ERR_CAST(page); |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 374 | return ERR_PTR(-ENOENT); |
Chao Yu | 91246c2 | 2016-07-19 08:27:47 +0800 | [diff] [blame] | 375 | } |
Al Viro | fc64005 | 2016-04-10 01:33:30 -0400 | [diff] [blame] | 376 | return d_obtain_alias(f2fs_iget(child->d_sb, ino)); |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 377 | } |
| 378 | |
Jaegeuk Kim | 510022a | 2015-03-30 15:07:16 -0700 | [diff] [blame] | 379 | static int __recover_dot_dentries(struct inode *dir, nid_t pino) |
| 380 | { |
| 381 | struct f2fs_sb_info *sbi = F2FS_I_SB(dir); |
| 382 | struct qstr dot = QSTR_INIT(".", 1); |
| 383 | struct qstr dotdot = QSTR_INIT("..", 2); |
| 384 | struct f2fs_dir_entry *de; |
| 385 | struct page *page; |
| 386 | int err = 0; |
| 387 | |
Chao Yu | 4e0d836 | 2015-12-30 17:40:31 +0800 | [diff] [blame] | 388 | if (f2fs_readonly(sbi->sb)) { |
Joe Perches | a0d6863 | 2019-06-18 17:48:42 +0800 | [diff] [blame] | 389 | f2fs_info(sbi, "skip recovering inline_dots inode (ino:%lu, pino:%u) in readonly mountpoint", |
| 390 | dir->i_ino, pino); |
Chao Yu | 4e0d836 | 2015-12-30 17:40:31 +0800 | [diff] [blame] | 391 | return 0; |
| 392 | } |
| 393 | |
Chao Yu | 4b312af | 2017-07-24 17:12:06 +0800 | [diff] [blame] | 394 | err = dquot_initialize(dir); |
| 395 | if (err) |
| 396 | return err; |
| 397 | |
Jaegeuk Kim | 2c4db1a | 2016-01-07 14:15:04 -0800 | [diff] [blame] | 398 | f2fs_balance_fs(sbi, true); |
Chao Yu | d538417 | 2015-12-24 18:03:29 +0800 | [diff] [blame] | 399 | |
Jaegeuk Kim | 510022a | 2015-03-30 15:07:16 -0700 | [diff] [blame] | 400 | f2fs_lock_op(sbi); |
| 401 | |
| 402 | de = f2fs_find_entry(dir, &dot, &page); |
| 403 | if (de) { |
Jaegeuk Kim | 510022a | 2015-03-30 15:07:16 -0700 | [diff] [blame] | 404 | f2fs_put_page(page, 0); |
Jaegeuk Kim | 42d9640 | 2016-05-25 14:29:11 -0700 | [diff] [blame] | 405 | } else if (IS_ERR(page)) { |
| 406 | err = PTR_ERR(page); |
| 407 | goto out; |
Jaegeuk Kim | 510022a | 2015-03-30 15:07:16 -0700 | [diff] [blame] | 408 | } else { |
Chao Yu | 6b4d6a8 | 2018-05-30 00:20:41 +0800 | [diff] [blame] | 409 | err = f2fs_do_add_link(dir, &dot, NULL, dir->i_ino, S_IFDIR); |
Jaegeuk Kim | 510022a | 2015-03-30 15:07:16 -0700 | [diff] [blame] | 410 | if (err) |
| 411 | goto out; |
| 412 | } |
| 413 | |
| 414 | de = f2fs_find_entry(dir, &dotdot, &page); |
Yunlong Song | 975c567 | 2018-02-28 20:31:52 +0800 | [diff] [blame] | 415 | if (de) |
Jaegeuk Kim | 510022a | 2015-03-30 15:07:16 -0700 | [diff] [blame] | 416 | f2fs_put_page(page, 0); |
Yunlong Song | 975c567 | 2018-02-28 20:31:52 +0800 | [diff] [blame] | 417 | else if (IS_ERR(page)) |
Jaegeuk Kim | 42d9640 | 2016-05-25 14:29:11 -0700 | [diff] [blame] | 418 | err = PTR_ERR(page); |
Yunlong Song | 975c567 | 2018-02-28 20:31:52 +0800 | [diff] [blame] | 419 | else |
Chao Yu | 6b4d6a8 | 2018-05-30 00:20:41 +0800 | [diff] [blame] | 420 | err = f2fs_do_add_link(dir, &dotdot, NULL, pino, S_IFDIR); |
Jaegeuk Kim | 510022a | 2015-03-30 15:07:16 -0700 | [diff] [blame] | 421 | out: |
Jaegeuk Kim | 205b982 | 2016-05-20 09:52:20 -0700 | [diff] [blame] | 422 | if (!err) |
Jaegeuk Kim | 9194232 | 2016-05-20 10:13:22 -0700 | [diff] [blame] | 423 | clear_inode_flag(dir, FI_INLINE_DOTS); |
Jaegeuk Kim | 510022a | 2015-03-30 15:07:16 -0700 | [diff] [blame] | 424 | |
| 425 | f2fs_unlock_op(sbi); |
| 426 | return err; |
| 427 | } |
| 428 | |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 429 | static struct dentry *f2fs_lookup(struct inode *dir, struct dentry *dentry, |
| 430 | unsigned int flags) |
| 431 | { |
| 432 | struct inode *inode = NULL; |
| 433 | struct f2fs_dir_entry *de; |
| 434 | struct page *page; |
Chao Yu | d67586d | 2017-10-17 17:33:41 +0800 | [diff] [blame] | 435 | struct dentry *new; |
| 436 | nid_t ino = -1; |
Jaegeuk Kim | fcc85a4 | 2015-04-21 20:39:58 -0700 | [diff] [blame] | 437 | int err = 0; |
Liu Xue | 8c2b143 | 2016-02-26 06:39:23 +0000 | [diff] [blame] | 438 | unsigned int root_ino = F2FS_ROOT_INO(F2FS_I_SB(dir)); |
Eric Biggers | 3a3ac01 | 2019-03-20 11:39:13 -0700 | [diff] [blame^] | 439 | struct fscrypt_name fname; |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 440 | |
Chao Yu | d67586d | 2017-10-17 17:33:41 +0800 | [diff] [blame] | 441 | trace_f2fs_lookup_start(dir, dentry, flags); |
| 442 | |
Chao Yu | d67586d | 2017-10-17 17:33:41 +0800 | [diff] [blame] | 443 | if (dentry->d_name.len > F2FS_NAME_LEN) { |
| 444 | err = -ENAMETOOLONG; |
| 445 | goto out; |
| 446 | } |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 447 | |
Eric Biggers | 3a3ac01 | 2019-03-20 11:39:13 -0700 | [diff] [blame^] | 448 | err = fscrypt_prepare_lookup(dir, dentry, &fname); |
| 449 | if (err == -ENOENT) |
| 450 | goto out_splice; |
| 451 | if (err) |
| 452 | goto out; |
| 453 | de = __f2fs_find_entry(dir, &fname, &page); |
| 454 | fscrypt_free_filename(&fname); |
| 455 | |
Jaegeuk Kim | eb4246d | 2016-05-27 10:10:41 -0700 | [diff] [blame] | 456 | if (!de) { |
Chao Yu | d67586d | 2017-10-17 17:33:41 +0800 | [diff] [blame] | 457 | if (IS_ERR(page)) { |
| 458 | err = PTR_ERR(page); |
| 459 | goto out; |
| 460 | } |
| 461 | goto out_splice; |
Jaegeuk Kim | eb4246d | 2016-05-27 10:10:41 -0700 | [diff] [blame] | 462 | } |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 463 | |
Jaegeuk Kim | 06957e8 | 2015-04-22 11:40:27 -0700 | [diff] [blame] | 464 | ino = le32_to_cpu(de->ino); |
Jaegeuk Kim | 06957e8 | 2015-04-22 11:40:27 -0700 | [diff] [blame] | 465 | f2fs_put_page(page, 0); |
Jaegeuk Kim | 510022a | 2015-03-30 15:07:16 -0700 | [diff] [blame] | 466 | |
Jaegeuk Kim | 06957e8 | 2015-04-22 11:40:27 -0700 | [diff] [blame] | 467 | inode = f2fs_iget(dir->i_sb, ino); |
Chao Yu | d67586d | 2017-10-17 17:33:41 +0800 | [diff] [blame] | 468 | if (IS_ERR(inode)) { |
| 469 | err = PTR_ERR(inode); |
| 470 | goto out; |
| 471 | } |
Jaegeuk Kim | 510022a | 2015-03-30 15:07:16 -0700 | [diff] [blame] | 472 | |
Liu Xue | 8c2b143 | 2016-02-26 06:39:23 +0000 | [diff] [blame] | 473 | if ((dir->i_ino == root_ino) && f2fs_has_inline_dots(dir)) { |
| 474 | err = __recover_dot_dentries(dir, root_ino); |
| 475 | if (err) |
Chao Yu | d67586d | 2017-10-17 17:33:41 +0800 | [diff] [blame] | 476 | goto out_iput; |
Liu Xue | 8c2b143 | 2016-02-26 06:39:23 +0000 | [diff] [blame] | 477 | } |
| 478 | |
Jaegeuk Kim | fcc85a4 | 2015-04-21 20:39:58 -0700 | [diff] [blame] | 479 | if (f2fs_has_inline_dots(inode)) { |
Jaegeuk Kim | 06957e8 | 2015-04-22 11:40:27 -0700 | [diff] [blame] | 480 | err = __recover_dot_dentries(inode, dir->i_ino); |
Jaegeuk Kim | fcc85a4 | 2015-04-21 20:39:58 -0700 | [diff] [blame] | 481 | if (err) |
Chao Yu | d67586d | 2017-10-17 17:33:41 +0800 | [diff] [blame] | 482 | goto out_iput; |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 483 | } |
Chandan Rajendra | b62c458 | 2018-12-12 15:20:11 +0530 | [diff] [blame] | 484 | if (IS_ENCRYPTED(dir) && |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 485 | (S_ISDIR(inode->i_mode) || S_ISLNK(inode->i_mode)) && |
| 486 | !fscrypt_has_permitted_context(dir, inode)) { |
Joe Perches | a0d6863 | 2019-06-18 17:48:42 +0800 | [diff] [blame] | 487 | f2fs_warn(F2FS_I_SB(inode), "Inconsistent encryption contexts: %lu/%lu", |
| 488 | dir->i_ino, inode->i_ino); |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 489 | err = -EPERM; |
Chao Yu | d67586d | 2017-10-17 17:33:41 +0800 | [diff] [blame] | 490 | goto out_iput; |
Jaegeuk Kim | 8074bb5 | 2016-02-23 09:21:37 -0800 | [diff] [blame] | 491 | } |
Chao Yu | d67586d | 2017-10-17 17:33:41 +0800 | [diff] [blame] | 492 | out_splice: |
| 493 | new = d_splice_alias(inode, dentry); |
Eric Biggers | 3a3ac01 | 2019-03-20 11:39:13 -0700 | [diff] [blame^] | 494 | err = PTR_ERR_OR_ZERO(new); |
Chao Yu | d67586d | 2017-10-17 17:33:41 +0800 | [diff] [blame] | 495 | trace_f2fs_lookup_end(dir, dentry, ino, err); |
| 496 | return new; |
| 497 | out_iput: |
Chao Yu | d726732 | 2016-03-10 22:24:23 +0800 | [diff] [blame] | 498 | iput(inode); |
Chao Yu | d67586d | 2017-10-17 17:33:41 +0800 | [diff] [blame] | 499 | out: |
| 500 | trace_f2fs_lookup_end(dir, dentry, ino, err); |
Jaegeuk Kim | fcc85a4 | 2015-04-21 20:39:58 -0700 | [diff] [blame] | 501 | return ERR_PTR(err); |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 502 | } |
| 503 | |
| 504 | static int f2fs_unlink(struct inode *dir, struct dentry *dentry) |
| 505 | { |
Jaegeuk Kim | 4081363 | 2014-09-02 15:31:18 -0700 | [diff] [blame] | 506 | struct f2fs_sb_info *sbi = F2FS_I_SB(dir); |
David Howells | 2b0143b | 2015-03-17 22:25:59 +0000 | [diff] [blame] | 507 | struct inode *inode = d_inode(dentry); |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 508 | struct f2fs_dir_entry *de; |
| 509 | struct page *page; |
| 510 | int err = -ENOENT; |
| 511 | |
Namjae Jeon | a2a4a7e | 2013-04-20 01:28:40 +0900 | [diff] [blame] | 512 | trace_f2fs_unlink_enter(dir, dentry); |
Jaegeuk Kim | 1efef83 | 2012-12-19 16:25:21 +0900 | [diff] [blame] | 513 | |
Jaegeuk Kim | 6663422 | 2017-10-23 23:48:49 +0200 | [diff] [blame] | 514 | if (unlikely(f2fs_cp_error(sbi))) |
| 515 | return -EIO; |
| 516 | |
Chao Yu | 09c3a72 | 2017-07-09 00:13:07 +0800 | [diff] [blame] | 517 | err = dquot_initialize(dir); |
| 518 | if (err) |
| 519 | return err; |
Jaegeuk Kim | d888fcd | 2017-10-23 23:50:15 +0200 | [diff] [blame] | 520 | err = dquot_initialize(inode); |
| 521 | if (err) |
| 522 | return err; |
Chao Yu | 09c3a72 | 2017-07-09 00:13:07 +0800 | [diff] [blame] | 523 | |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 524 | de = f2fs_find_entry(dir, &dentry->d_name, &page); |
Chao Yu | 91246c2 | 2016-07-19 08:27:47 +0800 | [diff] [blame] | 525 | if (!de) { |
| 526 | if (IS_ERR(page)) |
| 527 | err = PTR_ERR(page); |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 528 | goto fail; |
Chao Yu | 91246c2 | 2016-07-19 08:27:47 +0800 | [diff] [blame] | 529 | } |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 530 | |
Jaegeuk Kim | 2c4db1a | 2016-01-07 14:15:04 -0800 | [diff] [blame] | 531 | f2fs_balance_fs(sbi, true); |
Jaegeuk Kim | 00623e6 | 2015-12-22 11:56:08 -0800 | [diff] [blame] | 532 | |
Jaegeuk Kim | ccaaca2 | 2013-10-08 10:19:28 +0900 | [diff] [blame] | 533 | f2fs_lock_op(sbi); |
Chao Yu | 6b4d6a8 | 2018-05-30 00:20:41 +0800 | [diff] [blame] | 534 | err = f2fs_acquire_orphan_inode(sbi); |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 535 | if (err) { |
Jaegeuk Kim | ccaaca2 | 2013-10-08 10:19:28 +0900 | [diff] [blame] | 536 | f2fs_unlock_op(sbi); |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 537 | f2fs_put_page(page, 0); |
| 538 | goto fail; |
| 539 | } |
Chao Yu | dbeacf0 | 2014-09-24 18:17:04 +0800 | [diff] [blame] | 540 | f2fs_delete_entry(de, page, dir, inode); |
Gu Zheng | e479556 | 2013-09-27 18:08:30 +0800 | [diff] [blame] | 541 | f2fs_unlock_op(sbi); |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 542 | |
Jaegeuk Kim | b7e1d80 | 2014-11-09 22:15:31 -0800 | [diff] [blame] | 543 | if (IS_DIRSYNC(dir)) |
| 544 | f2fs_sync_fs(sbi->sb, 1); |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 545 | fail: |
Namjae Jeon | a2a4a7e | 2013-04-20 01:28:40 +0900 | [diff] [blame] | 546 | trace_f2fs_unlink_exit(inode, err); |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 547 | return err; |
| 548 | } |
| 549 | |
Al Viro | 6b25539 | 2015-11-17 10:20:54 -0500 | [diff] [blame] | 550 | static const char *f2fs_get_link(struct dentry *dentry, |
Al Viro | fceef39 | 2015-12-29 15:58:39 -0500 | [diff] [blame] | 551 | struct inode *inode, |
| 552 | struct delayed_call *done) |
Jaegeuk Kim | feb7cbb | 2015-04-15 13:49:55 -0700 | [diff] [blame] | 553 | { |
Al Viro | fceef39 | 2015-12-29 15:58:39 -0500 | [diff] [blame] | 554 | const char *link = page_get_link(dentry, inode, done); |
Al Viro | 680baac | 2015-05-02 13:32:22 -0400 | [diff] [blame] | 555 | if (!IS_ERR(link) && !*link) { |
| 556 | /* this is broken symlink case */ |
Al Viro | fceef39 | 2015-12-29 15:58:39 -0500 | [diff] [blame] | 557 | do_delayed_call(done); |
| 558 | clear_delayed_call(done); |
Al Viro | 680baac | 2015-05-02 13:32:22 -0400 | [diff] [blame] | 559 | link = ERR_PTR(-ENOENT); |
Jaegeuk Kim | feb7cbb | 2015-04-15 13:49:55 -0700 | [diff] [blame] | 560 | } |
Al Viro | 680baac | 2015-05-02 13:32:22 -0400 | [diff] [blame] | 561 | return link; |
Jaegeuk Kim | feb7cbb | 2015-04-15 13:49:55 -0700 | [diff] [blame] | 562 | } |
| 563 | |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 564 | static int f2fs_symlink(struct inode *dir, struct dentry *dentry, |
| 565 | const char *symname) |
| 566 | { |
Jaegeuk Kim | 4081363 | 2014-09-02 15:31:18 -0700 | [diff] [blame] | 567 | struct f2fs_sb_info *sbi = F2FS_I_SB(dir); |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 568 | struct inode *inode; |
Jaegeuk Kim | cbaf042 | 2015-04-29 15:10:53 -0700 | [diff] [blame] | 569 | size_t len = strlen(symname); |
Eric Biggers | f62d3d3 | 2018-01-11 23:26:49 -0500 | [diff] [blame] | 570 | struct fscrypt_str disk_link; |
Gu Zheng | e479556 | 2013-09-27 18:08:30 +0800 | [diff] [blame] | 571 | int err; |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 572 | |
Jaegeuk Kim | 6663422 | 2017-10-23 23:48:49 +0200 | [diff] [blame] | 573 | if (unlikely(f2fs_cp_error(sbi))) |
| 574 | return -EIO; |
Daniel Rosenberg | f22f93a | 2018-08-20 19:21:43 -0700 | [diff] [blame] | 575 | err = f2fs_is_checkpoint_ready(sbi); |
| 576 | if (err) |
| 577 | return err; |
Jaegeuk Kim | 6663422 | 2017-10-23 23:48:49 +0200 | [diff] [blame] | 578 | |
Eric Biggers | f62d3d3 | 2018-01-11 23:26:49 -0500 | [diff] [blame] | 579 | err = fscrypt_prepare_symlink(dir, symname, len, dir->i_sb->s_blocksize, |
| 580 | &disk_link); |
| 581 | if (err) |
| 582 | return err; |
Jaegeuk Kim | cbaf042 | 2015-04-29 15:10:53 -0700 | [diff] [blame] | 583 | |
Chao Yu | 09c3a72 | 2017-07-09 00:13:07 +0800 | [diff] [blame] | 584 | err = dquot_initialize(dir); |
| 585 | if (err) |
| 586 | return err; |
| 587 | |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 588 | inode = f2fs_new_inode(dir, S_IFLNK | S_IRWXUGO); |
| 589 | if (IS_ERR(inode)) |
| 590 | return PTR_ERR(inode); |
| 591 | |
Eric Biggers | f62d3d3 | 2018-01-11 23:26:49 -0500 | [diff] [blame] | 592 | if (IS_ENCRYPTED(inode)) |
Jaegeuk Kim | cbaf042 | 2015-04-29 15:10:53 -0700 | [diff] [blame] | 593 | inode->i_op = &f2fs_encrypted_symlink_inode_operations; |
| 594 | else |
| 595 | inode->i_op = &f2fs_symlink_inode_operations; |
Al Viro | 21fc61c | 2015-11-17 01:07:57 -0500 | [diff] [blame] | 596 | inode_nohighmem(inode); |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 597 | inode->i_mapping->a_ops = &f2fs_dblock_aops; |
| 598 | |
Gu Zheng | e479556 | 2013-09-27 18:08:30 +0800 | [diff] [blame] | 599 | f2fs_lock_op(sbi); |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 600 | err = f2fs_add_link(dentry, inode); |
| 601 | if (err) |
Chao Yu | 6b4d6a8 | 2018-05-30 00:20:41 +0800 | [diff] [blame] | 602 | goto out_f2fs_handle_failed_inode; |
Jaegeuk Kim | 44c1615 | 2014-09-25 11:55:53 -0700 | [diff] [blame] | 603 | f2fs_unlock_op(sbi); |
Chao Yu | 6b4d6a8 | 2018-05-30 00:20:41 +0800 | [diff] [blame] | 604 | f2fs_alloc_nid_done(sbi, inode->i_ino); |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 605 | |
Eric Biggers | f62d3d3 | 2018-01-11 23:26:49 -0500 | [diff] [blame] | 606 | err = fscrypt_encrypt_symlink(inode, symname, len, &disk_link); |
| 607 | if (err) |
| 608 | goto err_out; |
Jaegeuk Kim | cbaf042 | 2015-04-29 15:10:53 -0700 | [diff] [blame] | 609 | |
Chao Yu | 922ec35 | 2016-02-15 17:54:26 +0800 | [diff] [blame] | 610 | err = page_symlink(inode, disk_link.name, disk_link.len); |
Jaegeuk Kim | cbaf042 | 2015-04-29 15:10:53 -0700 | [diff] [blame] | 611 | |
| 612 | err_out: |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 613 | unlock_new_inode(inode); |
Eric Biggers | e605f83 | 2018-04-18 15:48:42 -0700 | [diff] [blame] | 614 | d_instantiate(dentry, inode); |
Jaegeuk Kim | b7e1d80 | 2014-11-09 22:15:31 -0800 | [diff] [blame] | 615 | |
Jaegeuk Kim | d0cae97 | 2015-04-15 13:37:53 -0700 | [diff] [blame] | 616 | /* |
| 617 | * Let's flush symlink data in order to avoid broken symlink as much as |
| 618 | * possible. Nevertheless, fsyncing is the best way, but there is no |
| 619 | * way to get a file descriptor in order to flush that. |
| 620 | * |
| 621 | * Note that, it needs to do dir->fsync to make this recoverable. |
| 622 | * If the symlink path is stored into inline_data, there is no |
| 623 | * performance regression. |
| 624 | */ |
Chao Yu | a6be014 | 2015-10-22 18:23:08 +0800 | [diff] [blame] | 625 | if (!err) { |
Chao Yu | 922ec35 | 2016-02-15 17:54:26 +0800 | [diff] [blame] | 626 | filemap_write_and_wait_range(inode->i_mapping, 0, |
| 627 | disk_link.len - 1); |
Jaegeuk Kim | d0cae97 | 2015-04-15 13:37:53 -0700 | [diff] [blame] | 628 | |
Chao Yu | a6be014 | 2015-10-22 18:23:08 +0800 | [diff] [blame] | 629 | if (IS_DIRSYNC(dir)) |
| 630 | f2fs_sync_fs(sbi->sb, 1); |
| 631 | } else { |
| 632 | f2fs_unlink(dir, dentry); |
| 633 | } |
Jaegeuk Kim | cbaf042 | 2015-04-29 15:10:53 -0700 | [diff] [blame] | 634 | |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 635 | f2fs_balance_fs(sbi, true); |
Eric Biggers | f62d3d3 | 2018-01-11 23:26:49 -0500 | [diff] [blame] | 636 | goto out_free_encrypted_link; |
| 637 | |
Chao Yu | 6b4d6a8 | 2018-05-30 00:20:41 +0800 | [diff] [blame] | 638 | out_f2fs_handle_failed_inode: |
| 639 | f2fs_handle_failed_inode(inode); |
Eric Biggers | f62d3d3 | 2018-01-11 23:26:49 -0500 | [diff] [blame] | 640 | out_free_encrypted_link: |
| 641 | if (disk_link.name != (unsigned char *)symname) |
Jaegeuk Kim | 9248dba | 2018-12-13 18:38:33 -0800 | [diff] [blame] | 642 | kvfree(disk_link.name); |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 643 | return err; |
| 644 | } |
| 645 | |
| 646 | static int f2fs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode) |
| 647 | { |
Jaegeuk Kim | 4081363 | 2014-09-02 15:31:18 -0700 | [diff] [blame] | 648 | struct f2fs_sb_info *sbi = F2FS_I_SB(dir); |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 649 | struct inode *inode; |
Gu Zheng | e479556 | 2013-09-27 18:08:30 +0800 | [diff] [blame] | 650 | int err; |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 651 | |
Jaegeuk Kim | 6663422 | 2017-10-23 23:48:49 +0200 | [diff] [blame] | 652 | if (unlikely(f2fs_cp_error(sbi))) |
| 653 | return -EIO; |
| 654 | |
Chao Yu | 09c3a72 | 2017-07-09 00:13:07 +0800 | [diff] [blame] | 655 | err = dquot_initialize(dir); |
| 656 | if (err) |
| 657 | return err; |
| 658 | |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 659 | inode = f2fs_new_inode(dir, S_IFDIR | mode); |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 660 | if (IS_ERR(inode)) |
Namjae Jeon | 61412b6 | 2012-12-01 10:56:25 +0900 | [diff] [blame] | 661 | return PTR_ERR(inode); |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 662 | |
| 663 | inode->i_op = &f2fs_dir_inode_operations; |
| 664 | inode->i_fop = &f2fs_dir_operations; |
| 665 | inode->i_mapping->a_ops = &f2fs_dblock_aops; |
Yunlong Song | 975c567 | 2018-02-28 20:31:52 +0800 | [diff] [blame] | 666 | inode_nohighmem(inode); |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 667 | |
Jaegeuk Kim | 9194232 | 2016-05-20 10:13:22 -0700 | [diff] [blame] | 668 | set_inode_flag(inode, FI_INC_LINK); |
Gu Zheng | e479556 | 2013-09-27 18:08:30 +0800 | [diff] [blame] | 669 | f2fs_lock_op(sbi); |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 670 | err = f2fs_add_link(dentry, inode); |
| 671 | if (err) |
| 672 | goto out_fail; |
Jaegeuk Kim | 44c1615 | 2014-09-25 11:55:53 -0700 | [diff] [blame] | 673 | f2fs_unlock_op(sbi); |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 674 | |
Chao Yu | 6b4d6a8 | 2018-05-30 00:20:41 +0800 | [diff] [blame] | 675 | f2fs_alloc_nid_done(sbi, inode->i_ino); |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 676 | |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 677 | unlock_new_inode(inode); |
Eric Biggers | e605f83 | 2018-04-18 15:48:42 -0700 | [diff] [blame] | 678 | d_instantiate(dentry, inode); |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 679 | |
Jaegeuk Kim | b7e1d80 | 2014-11-09 22:15:31 -0800 | [diff] [blame] | 680 | if (IS_DIRSYNC(dir)) |
| 681 | f2fs_sync_fs(sbi->sb, 1); |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 682 | |
| 683 | f2fs_balance_fs(sbi, true); |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 684 | return 0; |
| 685 | |
| 686 | out_fail: |
Jaegeuk Kim | 9194232 | 2016-05-20 10:13:22 -0700 | [diff] [blame] | 687 | clear_inode_flag(inode, FI_INC_LINK); |
Chao Yu | 6b4d6a8 | 2018-05-30 00:20:41 +0800 | [diff] [blame] | 688 | f2fs_handle_failed_inode(inode); |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 689 | return err; |
| 690 | } |
| 691 | |
| 692 | static int f2fs_rmdir(struct inode *dir, struct dentry *dentry) |
| 693 | { |
David Howells | 2b0143b | 2015-03-17 22:25:59 +0000 | [diff] [blame] | 694 | struct inode *inode = d_inode(dentry); |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 695 | if (f2fs_empty_dir(inode)) |
| 696 | return f2fs_unlink(dir, dentry); |
| 697 | return -ENOTEMPTY; |
| 698 | } |
| 699 | |
| 700 | static int f2fs_mknod(struct inode *dir, struct dentry *dentry, |
| 701 | umode_t mode, dev_t rdev) |
| 702 | { |
Jaegeuk Kim | 4081363 | 2014-09-02 15:31:18 -0700 | [diff] [blame] | 703 | struct f2fs_sb_info *sbi = F2FS_I_SB(dir); |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 704 | struct inode *inode; |
| 705 | int err = 0; |
| 706 | |
Jaegeuk Kim | 6663422 | 2017-10-23 23:48:49 +0200 | [diff] [blame] | 707 | if (unlikely(f2fs_cp_error(sbi))) |
| 708 | return -EIO; |
Daniel Rosenberg | f22f93a | 2018-08-20 19:21:43 -0700 | [diff] [blame] | 709 | err = f2fs_is_checkpoint_ready(sbi); |
| 710 | if (err) |
| 711 | return err; |
Jaegeuk Kim | 6663422 | 2017-10-23 23:48:49 +0200 | [diff] [blame] | 712 | |
Chao Yu | 09c3a72 | 2017-07-09 00:13:07 +0800 | [diff] [blame] | 713 | err = dquot_initialize(dir); |
| 714 | if (err) |
| 715 | return err; |
| 716 | |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 717 | inode = f2fs_new_inode(dir, mode); |
| 718 | if (IS_ERR(inode)) |
| 719 | return PTR_ERR(inode); |
| 720 | |
| 721 | init_special_inode(inode, inode->i_mode, rdev); |
| 722 | inode->i_op = &f2fs_special_inode_operations; |
| 723 | |
Gu Zheng | e479556 | 2013-09-27 18:08:30 +0800 | [diff] [blame] | 724 | f2fs_lock_op(sbi); |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 725 | err = f2fs_add_link(dentry, inode); |
| 726 | if (err) |
| 727 | goto out; |
Jaegeuk Kim | 44c1615 | 2014-09-25 11:55:53 -0700 | [diff] [blame] | 728 | f2fs_unlock_op(sbi); |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 729 | |
Chao Yu | 6b4d6a8 | 2018-05-30 00:20:41 +0800 | [diff] [blame] | 730 | f2fs_alloc_nid_done(sbi, inode->i_ino); |
Jaegeuk Kim | b7e1d80 | 2014-11-09 22:15:31 -0800 | [diff] [blame] | 731 | |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 732 | unlock_new_inode(inode); |
Eric Biggers | e605f83 | 2018-04-18 15:48:42 -0700 | [diff] [blame] | 733 | d_instantiate(dentry, inode); |
Jaegeuk Kim | b7e1d80 | 2014-11-09 22:15:31 -0800 | [diff] [blame] | 734 | |
| 735 | if (IS_DIRSYNC(dir)) |
| 736 | f2fs_sync_fs(sbi->sb, 1); |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 737 | |
| 738 | f2fs_balance_fs(sbi, true); |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 739 | return 0; |
| 740 | out: |
Chao Yu | 6b4d6a8 | 2018-05-30 00:20:41 +0800 | [diff] [blame] | 741 | f2fs_handle_failed_inode(inode); |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 742 | return err; |
| 743 | } |
| 744 | |
Chao Yu | 7e01e7ad | 2015-05-19 17:37:26 +0800 | [diff] [blame] | 745 | static int __f2fs_tmpfile(struct inode *dir, struct dentry *dentry, |
| 746 | umode_t mode, struct inode **whiteout) |
| 747 | { |
| 748 | struct f2fs_sb_info *sbi = F2FS_I_SB(dir); |
| 749 | struct inode *inode; |
| 750 | int err; |
| 751 | |
Chao Yu | 09c3a72 | 2017-07-09 00:13:07 +0800 | [diff] [blame] | 752 | err = dquot_initialize(dir); |
| 753 | if (err) |
| 754 | return err; |
| 755 | |
Chao Yu | 7e01e7ad | 2015-05-19 17:37:26 +0800 | [diff] [blame] | 756 | inode = f2fs_new_inode(dir, mode); |
| 757 | if (IS_ERR(inode)) |
| 758 | return PTR_ERR(inode); |
| 759 | |
| 760 | if (whiteout) { |
| 761 | init_special_inode(inode, inode->i_mode, WHITEOUT_DEV); |
| 762 | inode->i_op = &f2fs_special_inode_operations; |
| 763 | } else { |
| 764 | inode->i_op = &f2fs_file_inode_operations; |
| 765 | inode->i_fop = &f2fs_file_operations; |
| 766 | inode->i_mapping->a_ops = &f2fs_dblock_aops; |
| 767 | } |
| 768 | |
| 769 | f2fs_lock_op(sbi); |
Chao Yu | 6b4d6a8 | 2018-05-30 00:20:41 +0800 | [diff] [blame] | 770 | err = f2fs_acquire_orphan_inode(sbi); |
Chao Yu | 7e01e7ad | 2015-05-19 17:37:26 +0800 | [diff] [blame] | 771 | if (err) |
| 772 | goto out; |
| 773 | |
| 774 | err = f2fs_do_tmpfile(inode, dir); |
| 775 | if (err) |
| 776 | goto release_out; |
| 777 | |
| 778 | /* |
| 779 | * add this non-linked tmpfile to orphan list, in this way we could |
| 780 | * remove all unused data of tmpfile after abnormal power-off. |
| 781 | */ |
Chao Yu | 6b4d6a8 | 2018-05-30 00:20:41 +0800 | [diff] [blame] | 782 | f2fs_add_orphan_inode(inode); |
| 783 | f2fs_alloc_nid_done(sbi, inode->i_ino); |
Chao Yu | 7e01e7ad | 2015-05-19 17:37:26 +0800 | [diff] [blame] | 784 | |
| 785 | if (whiteout) { |
Jaegeuk Kim | a196124 | 2016-05-20 09:43:20 -0700 | [diff] [blame] | 786 | f2fs_i_links_write(inode, false); |
Chao Yu | 7e01e7ad | 2015-05-19 17:37:26 +0800 | [diff] [blame] | 787 | *whiteout = inode; |
| 788 | } else { |
| 789 | d_tmpfile(dentry, inode); |
| 790 | } |
Jaegeuk Kim | a196124 | 2016-05-20 09:43:20 -0700 | [diff] [blame] | 791 | /* link_count was changed by d_tmpfile as well. */ |
| 792 | f2fs_unlock_op(sbi); |
Chao Yu | 7e01e7ad | 2015-05-19 17:37:26 +0800 | [diff] [blame] | 793 | unlock_new_inode(inode); |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 794 | |
| 795 | f2fs_balance_fs(sbi, true); |
Chao Yu | 7e01e7ad | 2015-05-19 17:37:26 +0800 | [diff] [blame] | 796 | return 0; |
| 797 | |
| 798 | release_out: |
Chao Yu | 6b4d6a8 | 2018-05-30 00:20:41 +0800 | [diff] [blame] | 799 | f2fs_release_orphan_inode(sbi); |
Chao Yu | 7e01e7ad | 2015-05-19 17:37:26 +0800 | [diff] [blame] | 800 | out: |
Chao Yu | 6b4d6a8 | 2018-05-30 00:20:41 +0800 | [diff] [blame] | 801 | f2fs_handle_failed_inode(inode); |
Chao Yu | 7e01e7ad | 2015-05-19 17:37:26 +0800 | [diff] [blame] | 802 | return err; |
| 803 | } |
| 804 | |
| 805 | static int f2fs_tmpfile(struct inode *dir, struct dentry *dentry, umode_t mode) |
| 806 | { |
Sheng Yong | aa5bcfd | 2018-03-15 18:51:42 +0800 | [diff] [blame] | 807 | struct f2fs_sb_info *sbi = F2FS_I_SB(dir); |
| 808 | |
| 809 | if (unlikely(f2fs_cp_error(sbi))) |
Jaegeuk Kim | 6663422 | 2017-10-23 23:48:49 +0200 | [diff] [blame] | 810 | return -EIO; |
| 811 | |
Chandan Rajendra | b62c458 | 2018-12-12 15:20:11 +0530 | [diff] [blame] | 812 | if (IS_ENCRYPTED(dir) || DUMMY_ENCRYPTION_ENABLED(sbi)) { |
Jaegeuk Kim | 0b81d07 | 2015-05-15 16:26:10 -0700 | [diff] [blame] | 813 | int err = fscrypt_get_encryption_info(dir); |
Jaegeuk Kim | 304eecc | 2015-05-19 16:11:40 -0700 | [diff] [blame] | 814 | if (err) |
| 815 | return err; |
| 816 | } |
| 817 | |
Chao Yu | 7e01e7ad | 2015-05-19 17:37:26 +0800 | [diff] [blame] | 818 | return __f2fs_tmpfile(dir, dentry, mode, NULL); |
| 819 | } |
| 820 | |
| 821 | static int f2fs_create_whiteout(struct inode *dir, struct inode **whiteout) |
| 822 | { |
Jaegeuk Kim | 6663422 | 2017-10-23 23:48:49 +0200 | [diff] [blame] | 823 | if (unlikely(f2fs_cp_error(F2FS_I_SB(dir)))) |
| 824 | return -EIO; |
| 825 | |
Chao Yu | 7e01e7ad | 2015-05-19 17:37:26 +0800 | [diff] [blame] | 826 | return __f2fs_tmpfile(dir, NULL, S_IFCHR | WHITEOUT_MODE, whiteout); |
| 827 | } |
| 828 | |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 829 | static int f2fs_rename(struct inode *old_dir, struct dentry *old_dentry, |
Chao Yu | 7e01e7ad | 2015-05-19 17:37:26 +0800 | [diff] [blame] | 830 | struct inode *new_dir, struct dentry *new_dentry, |
| 831 | unsigned int flags) |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 832 | { |
Jaegeuk Kim | 4081363 | 2014-09-02 15:31:18 -0700 | [diff] [blame] | 833 | struct f2fs_sb_info *sbi = F2FS_I_SB(old_dir); |
David Howells | 2b0143b | 2015-03-17 22:25:59 +0000 | [diff] [blame] | 834 | struct inode *old_inode = d_inode(old_dentry); |
| 835 | struct inode *new_inode = d_inode(new_dentry); |
Chao Yu | 7e01e7ad | 2015-05-19 17:37:26 +0800 | [diff] [blame] | 836 | struct inode *whiteout = NULL; |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 837 | struct page *old_dir_page; |
Chao Yu | 7e01e7ad | 2015-05-19 17:37:26 +0800 | [diff] [blame] | 838 | struct page *old_page, *new_page = NULL; |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 839 | struct f2fs_dir_entry *old_dir_entry = NULL; |
| 840 | struct f2fs_dir_entry *old_entry; |
| 841 | struct f2fs_dir_entry *new_entry; |
Chao Yu | 993a049 | 2016-02-17 16:47:05 +0800 | [diff] [blame] | 842 | bool is_old_inline = f2fs_has_inline_dentry(old_dir); |
Jaegeuk Kim | faa6beb | 2018-09-17 13:25:04 -0700 | [diff] [blame] | 843 | int err; |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 844 | |
Jaegeuk Kim | 6663422 | 2017-10-23 23:48:49 +0200 | [diff] [blame] | 845 | if (unlikely(f2fs_cp_error(sbi))) |
| 846 | return -EIO; |
Daniel Rosenberg | f22f93a | 2018-08-20 19:21:43 -0700 | [diff] [blame] | 847 | err = f2fs_is_checkpoint_ready(sbi); |
| 848 | if (err) |
| 849 | return err; |
Jaegeuk Kim | 6663422 | 2017-10-23 23:48:49 +0200 | [diff] [blame] | 850 | |
Chao Yu | 5647b30 | 2017-07-26 00:01:41 +0800 | [diff] [blame] | 851 | if (is_inode_flag_set(new_dir, FI_PROJ_INHERIT) && |
| 852 | (!projid_eq(F2FS_I(new_dir)->i_projid, |
| 853 | F2FS_I(old_dentry->d_inode)->i_projid))) |
| 854 | return -EXDEV; |
| 855 | |
Chao Yu | 09c3a72 | 2017-07-09 00:13:07 +0800 | [diff] [blame] | 856 | err = dquot_initialize(old_dir); |
| 857 | if (err) |
| 858 | goto out; |
| 859 | |
| 860 | err = dquot_initialize(new_dir); |
| 861 | if (err) |
| 862 | goto out; |
| 863 | |
Jaegeuk Kim | d888fcd | 2017-10-23 23:50:15 +0200 | [diff] [blame] | 864 | if (new_inode) { |
| 865 | err = dquot_initialize(new_inode); |
| 866 | if (err) |
| 867 | goto out; |
| 868 | } |
| 869 | |
Jaegeuk Kim | faa6beb | 2018-09-17 13:25:04 -0700 | [diff] [blame] | 870 | err = -ENOENT; |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 871 | old_entry = f2fs_find_entry(old_dir, &old_dentry->d_name, &old_page); |
Chao Yu | 91246c2 | 2016-07-19 08:27:47 +0800 | [diff] [blame] | 872 | if (!old_entry) { |
| 873 | if (IS_ERR(old_page)) |
| 874 | err = PTR_ERR(old_page); |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 875 | goto out; |
Chao Yu | 91246c2 | 2016-07-19 08:27:47 +0800 | [diff] [blame] | 876 | } |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 877 | |
| 878 | if (S_ISDIR(old_inode->i_mode)) { |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 879 | old_dir_entry = f2fs_parent_dir(old_inode, &old_dir_page); |
Jaegeuk Kim | 3e19886 | 2016-06-09 14:57:19 -0700 | [diff] [blame] | 880 | if (!old_dir_entry) { |
Chao Yu | 91246c2 | 2016-07-19 08:27:47 +0800 | [diff] [blame] | 881 | if (IS_ERR(old_dir_page)) |
| 882 | err = PTR_ERR(old_dir_page); |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 883 | goto out_old; |
Jaegeuk Kim | 3e19886 | 2016-06-09 14:57:19 -0700 | [diff] [blame] | 884 | } |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 885 | } |
| 886 | |
Chao Yu | 7e01e7ad | 2015-05-19 17:37:26 +0800 | [diff] [blame] | 887 | if (flags & RENAME_WHITEOUT) { |
| 888 | err = f2fs_create_whiteout(old_dir, &whiteout); |
| 889 | if (err) |
| 890 | goto out_dir; |
| 891 | } |
| 892 | |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 893 | if (new_inode) { |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 894 | |
| 895 | err = -ENOTEMPTY; |
| 896 | if (old_dir_entry && !f2fs_empty_dir(new_inode)) |
Chao Yu | 7e01e7ad | 2015-05-19 17:37:26 +0800 | [diff] [blame] | 897 | goto out_whiteout; |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 898 | |
| 899 | err = -ENOENT; |
| 900 | new_entry = f2fs_find_entry(new_dir, &new_dentry->d_name, |
| 901 | &new_page); |
Chao Yu | 91246c2 | 2016-07-19 08:27:47 +0800 | [diff] [blame] | 902 | if (!new_entry) { |
| 903 | if (IS_ERR(new_page)) |
| 904 | err = PTR_ERR(new_page); |
Chao Yu | 7e01e7ad | 2015-05-19 17:37:26 +0800 | [diff] [blame] | 905 | goto out_whiteout; |
Chao Yu | 91246c2 | 2016-07-19 08:27:47 +0800 | [diff] [blame] | 906 | } |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 907 | |
Jaegeuk Kim | 2c4db1a | 2016-01-07 14:15:04 -0800 | [diff] [blame] | 908 | f2fs_balance_fs(sbi, true); |
Jaegeuk Kim | 00623e6 | 2015-12-22 11:56:08 -0800 | [diff] [blame] | 909 | |
Chao Yu | 1256010 | 2014-06-24 14:16:24 +0800 | [diff] [blame] | 910 | f2fs_lock_op(sbi); |
| 911 | |
Chao Yu | 6b4d6a8 | 2018-05-30 00:20:41 +0800 | [diff] [blame] | 912 | err = f2fs_acquire_orphan_inode(sbi); |
Jaegeuk Kim | cbd56e7 | 2013-07-30 11:36:53 +0900 | [diff] [blame] | 913 | if (err) |
| 914 | goto put_out_dir; |
| 915 | |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 916 | f2fs_set_link(new_dir, new_entry, new_page, old_inode); |
| 917 | |
Deepa Dinamani | 078cd82 | 2016-09-14 07:48:04 -0700 | [diff] [blame] | 918 | new_inode->i_ctime = current_time(new_inode); |
Jaegeuk Kim | d928bfb | 2014-03-20 19:10:08 +0900 | [diff] [blame] | 919 | down_write(&F2FS_I(new_inode)->i_sem); |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 920 | if (old_dir_entry) |
Jaegeuk Kim | a196124 | 2016-05-20 09:43:20 -0700 | [diff] [blame] | 921 | f2fs_i_links_write(new_inode, false); |
| 922 | f2fs_i_links_write(new_inode, false); |
Jaegeuk Kim | d928bfb | 2014-03-20 19:10:08 +0900 | [diff] [blame] | 923 | up_write(&F2FS_I(new_inode)->i_sem); |
| 924 | |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 925 | if (!new_inode->i_nlink) |
Chao Yu | 6b4d6a8 | 2018-05-30 00:20:41 +0800 | [diff] [blame] | 926 | f2fs_add_orphan_inode(new_inode); |
Jaegeuk Kim | cbd56e7 | 2013-07-30 11:36:53 +0900 | [diff] [blame] | 927 | else |
Chao Yu | 6b4d6a8 | 2018-05-30 00:20:41 +0800 | [diff] [blame] | 928 | f2fs_release_orphan_inode(sbi); |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 929 | } else { |
Jaegeuk Kim | 2c4db1a | 2016-01-07 14:15:04 -0800 | [diff] [blame] | 930 | f2fs_balance_fs(sbi, true); |
Jaegeuk Kim | 00623e6 | 2015-12-22 11:56:08 -0800 | [diff] [blame] | 931 | |
Chao Yu | 1256010 | 2014-06-24 14:16:24 +0800 | [diff] [blame] | 932 | f2fs_lock_op(sbi); |
| 933 | |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 934 | err = f2fs_add_link(new_dentry, old_inode); |
Chao Yu | 1256010 | 2014-06-24 14:16:24 +0800 | [diff] [blame] | 935 | if (err) { |
| 936 | f2fs_unlock_op(sbi); |
Chao Yu | 7e01e7ad | 2015-05-19 17:37:26 +0800 | [diff] [blame] | 937 | goto out_whiteout; |
Chao Yu | 1256010 | 2014-06-24 14:16:24 +0800 | [diff] [blame] | 938 | } |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 939 | |
Jaegeuk Kim | ee6d182 | 2016-05-20 16:32:49 -0700 | [diff] [blame] | 940 | if (old_dir_entry) |
Jaegeuk Kim | a196124 | 2016-05-20 09:43:20 -0700 | [diff] [blame] | 941 | f2fs_i_links_write(new_dir, true); |
Chao Yu | 993a049 | 2016-02-17 16:47:05 +0800 | [diff] [blame] | 942 | |
| 943 | /* |
| 944 | * old entry and new entry can locate in the same inline |
| 945 | * dentry in inode, when attaching new entry in inline dentry, |
| 946 | * it could force inline dentry conversion, after that, |
| 947 | * old_entry and old_page will point to wrong address, in |
| 948 | * order to avoid this, let's do the check and update here. |
| 949 | */ |
| 950 | if (is_old_inline && !f2fs_has_inline_dentry(old_dir)) { |
| 951 | f2fs_put_page(old_page, 0); |
| 952 | old_page = NULL; |
| 953 | |
| 954 | old_entry = f2fs_find_entry(old_dir, |
| 955 | &old_dentry->d_name, &old_page); |
| 956 | if (!old_entry) { |
Chao Yu | 91246c2 | 2016-07-19 08:27:47 +0800 | [diff] [blame] | 957 | err = -ENOENT; |
| 958 | if (IS_ERR(old_page)) |
| 959 | err = PTR_ERR(old_page); |
Chao Yu | 993a049 | 2016-02-17 16:47:05 +0800 | [diff] [blame] | 960 | f2fs_unlock_op(sbi); |
| 961 | goto out_whiteout; |
| 962 | } |
| 963 | } |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 964 | } |
| 965 | |
Jaegeuk Kim | b2c0829 | 2014-06-30 18:09:55 +0900 | [diff] [blame] | 966 | down_write(&F2FS_I(old_inode)->i_sem); |
Sheng Yong | c2e6901 | 2017-06-26 10:41:36 +0800 | [diff] [blame] | 967 | if (!old_dir_entry || whiteout) |
| 968 | file_lost_pino(old_inode); |
| 969 | else |
| 970 | F2FS_I(old_inode)->i_pino = new_dir->i_ino; |
Jaegeuk Kim | b2c0829 | 2014-06-30 18:09:55 +0900 | [diff] [blame] | 971 | up_write(&F2FS_I(old_inode)->i_sem); |
| 972 | |
Deepa Dinamani | 078cd82 | 2016-09-14 07:48:04 -0700 | [diff] [blame] | 973 | old_inode->i_ctime = current_time(old_inode); |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 974 | f2fs_mark_inode_dirty_sync(old_inode, false); |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 975 | |
Chao Yu | dbeacf0 | 2014-09-24 18:17:04 +0800 | [diff] [blame] | 976 | f2fs_delete_entry(old_entry, old_page, old_dir, NULL); |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 977 | |
Chao Yu | 7e01e7ad | 2015-05-19 17:37:26 +0800 | [diff] [blame] | 978 | if (whiteout) { |
| 979 | whiteout->i_state |= I_LINKABLE; |
Jaegeuk Kim | 9194232 | 2016-05-20 10:13:22 -0700 | [diff] [blame] | 980 | set_inode_flag(whiteout, FI_INC_LINK); |
Chao Yu | 7e01e7ad | 2015-05-19 17:37:26 +0800 | [diff] [blame] | 981 | err = f2fs_add_link(old_dentry, whiteout); |
| 982 | if (err) |
| 983 | goto put_out_dir; |
| 984 | whiteout->i_state &= ~I_LINKABLE; |
| 985 | iput(whiteout); |
| 986 | } |
| 987 | |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 988 | if (old_dir_entry) { |
Yunlong Song | 975c567 | 2018-02-28 20:31:52 +0800 | [diff] [blame] | 989 | if (old_dir != new_dir && !whiteout) |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 990 | f2fs_set_link(old_inode, old_dir_entry, |
| 991 | old_dir_page, new_dir); |
Yunlong Song | 975c567 | 2018-02-28 20:31:52 +0800 | [diff] [blame] | 992 | else |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 993 | f2fs_put_page(old_dir_page, 0); |
Jaegeuk Kim | a196124 | 2016-05-20 09:43:20 -0700 | [diff] [blame] | 994 | f2fs_i_links_write(old_dir, false); |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 995 | } |
Jaegeuk Kim | d487b15 | 2018-04-24 22:43:01 -0600 | [diff] [blame] | 996 | if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_STRICT) { |
Chao Yu | 6b4d6a8 | 2018-05-30 00:20:41 +0800 | [diff] [blame] | 997 | f2fs_add_ino_entry(sbi, new_dir->i_ino, TRANS_DIR_INO); |
Jaegeuk Kim | d487b15 | 2018-04-24 22:43:01 -0600 | [diff] [blame] | 998 | if (S_ISDIR(old_inode->i_mode)) |
Chao Yu | 6b4d6a8 | 2018-05-30 00:20:41 +0800 | [diff] [blame] | 999 | f2fs_add_ino_entry(sbi, old_inode->i_ino, |
| 1000 | TRANS_DIR_INO); |
Jaegeuk Kim | d487b15 | 2018-04-24 22:43:01 -0600 | [diff] [blame] | 1001 | } |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 1002 | |
Gu Zheng | e479556 | 2013-09-27 18:08:30 +0800 | [diff] [blame] | 1003 | f2fs_unlock_op(sbi); |
Jaegeuk Kim | b7e1d80 | 2014-11-09 22:15:31 -0800 | [diff] [blame] | 1004 | |
| 1005 | if (IS_DIRSYNC(old_dir) || IS_DIRSYNC(new_dir)) |
| 1006 | f2fs_sync_fs(sbi->sb, 1); |
Sahitya Tummala | e5ddab1 | 2018-10-05 10:47:40 +0530 | [diff] [blame] | 1007 | |
| 1008 | f2fs_update_time(sbi, REQ_TIME); |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 1009 | return 0; |
| 1010 | |
Jaegeuk Kim | cbd56e7 | 2013-07-30 11:36:53 +0900 | [diff] [blame] | 1011 | put_out_dir: |
Chao Yu | 1256010 | 2014-06-24 14:16:24 +0800 | [diff] [blame] | 1012 | f2fs_unlock_op(sbi); |
Yunlong Song | 975c567 | 2018-02-28 20:31:52 +0800 | [diff] [blame] | 1013 | if (new_page) |
Chao Yu | 7e01e7ad | 2015-05-19 17:37:26 +0800 | [diff] [blame] | 1014 | f2fs_put_page(new_page, 0); |
Chao Yu | 7e01e7ad | 2015-05-19 17:37:26 +0800 | [diff] [blame] | 1015 | out_whiteout: |
| 1016 | if (whiteout) |
| 1017 | iput(whiteout); |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 1018 | out_dir: |
Yunlong Song | 975c567 | 2018-02-28 20:31:52 +0800 | [diff] [blame] | 1019 | if (old_dir_entry) |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 1020 | f2fs_put_page(old_dir_page, 0); |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 1021 | out_old: |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 1022 | f2fs_put_page(old_page, 0); |
| 1023 | out: |
| 1024 | return err; |
| 1025 | } |
| 1026 | |
Chao Yu | 32f9bc2 | 2014-07-12 19:13:54 +0800 | [diff] [blame] | 1027 | static int f2fs_cross_rename(struct inode *old_dir, struct dentry *old_dentry, |
| 1028 | struct inode *new_dir, struct dentry *new_dentry) |
| 1029 | { |
Jaegeuk Kim | 4081363 | 2014-09-02 15:31:18 -0700 | [diff] [blame] | 1030 | struct f2fs_sb_info *sbi = F2FS_I_SB(old_dir); |
David Howells | 2b0143b | 2015-03-17 22:25:59 +0000 | [diff] [blame] | 1031 | struct inode *old_inode = d_inode(old_dentry); |
| 1032 | struct inode *new_inode = d_inode(new_dentry); |
Chao Yu | 32f9bc2 | 2014-07-12 19:13:54 +0800 | [diff] [blame] | 1033 | struct page *old_dir_page, *new_dir_page; |
| 1034 | struct page *old_page, *new_page; |
| 1035 | struct f2fs_dir_entry *old_dir_entry = NULL, *new_dir_entry = NULL; |
| 1036 | struct f2fs_dir_entry *old_entry, *new_entry; |
| 1037 | int old_nlink = 0, new_nlink = 0; |
Jaegeuk Kim | faa6beb | 2018-09-17 13:25:04 -0700 | [diff] [blame] | 1038 | int err; |
Chao Yu | 32f9bc2 | 2014-07-12 19:13:54 +0800 | [diff] [blame] | 1039 | |
Jaegeuk Kim | 6663422 | 2017-10-23 23:48:49 +0200 | [diff] [blame] | 1040 | if (unlikely(f2fs_cp_error(sbi))) |
| 1041 | return -EIO; |
Daniel Rosenberg | f22f93a | 2018-08-20 19:21:43 -0700 | [diff] [blame] | 1042 | err = f2fs_is_checkpoint_ready(sbi); |
| 1043 | if (err) |
| 1044 | return err; |
Jaegeuk Kim | 6663422 | 2017-10-23 23:48:49 +0200 | [diff] [blame] | 1045 | |
Chao Yu | 5647b30 | 2017-07-26 00:01:41 +0800 | [diff] [blame] | 1046 | if ((is_inode_flag_set(new_dir, FI_PROJ_INHERIT) && |
| 1047 | !projid_eq(F2FS_I(new_dir)->i_projid, |
| 1048 | F2FS_I(old_dentry->d_inode)->i_projid)) || |
| 1049 | (is_inode_flag_set(new_dir, FI_PROJ_INHERIT) && |
| 1050 | !projid_eq(F2FS_I(old_dir)->i_projid, |
| 1051 | F2FS_I(new_dentry->d_inode)->i_projid))) |
| 1052 | return -EXDEV; |
| 1053 | |
Chao Yu | 09c3a72 | 2017-07-09 00:13:07 +0800 | [diff] [blame] | 1054 | err = dquot_initialize(old_dir); |
| 1055 | if (err) |
| 1056 | goto out; |
| 1057 | |
| 1058 | err = dquot_initialize(new_dir); |
| 1059 | if (err) |
| 1060 | goto out; |
| 1061 | |
Jaegeuk Kim | faa6beb | 2018-09-17 13:25:04 -0700 | [diff] [blame] | 1062 | err = -ENOENT; |
Chao Yu | 32f9bc2 | 2014-07-12 19:13:54 +0800 | [diff] [blame] | 1063 | old_entry = f2fs_find_entry(old_dir, &old_dentry->d_name, &old_page); |
Chao Yu | 91246c2 | 2016-07-19 08:27:47 +0800 | [diff] [blame] | 1064 | if (!old_entry) { |
| 1065 | if (IS_ERR(old_page)) |
| 1066 | err = PTR_ERR(old_page); |
Chao Yu | 32f9bc2 | 2014-07-12 19:13:54 +0800 | [diff] [blame] | 1067 | goto out; |
Chao Yu | 91246c2 | 2016-07-19 08:27:47 +0800 | [diff] [blame] | 1068 | } |
Chao Yu | 32f9bc2 | 2014-07-12 19:13:54 +0800 | [diff] [blame] | 1069 | |
| 1070 | new_entry = f2fs_find_entry(new_dir, &new_dentry->d_name, &new_page); |
Chao Yu | 91246c2 | 2016-07-19 08:27:47 +0800 | [diff] [blame] | 1071 | if (!new_entry) { |
| 1072 | if (IS_ERR(new_page)) |
| 1073 | err = PTR_ERR(new_page); |
Chao Yu | 32f9bc2 | 2014-07-12 19:13:54 +0800 | [diff] [blame] | 1074 | goto out_old; |
Chao Yu | 91246c2 | 2016-07-19 08:27:47 +0800 | [diff] [blame] | 1075 | } |
Chao Yu | 32f9bc2 | 2014-07-12 19:13:54 +0800 | [diff] [blame] | 1076 | |
| 1077 | /* prepare for updating ".." directory entry info later */ |
| 1078 | if (old_dir != new_dir) { |
| 1079 | if (S_ISDIR(old_inode->i_mode)) { |
Chao Yu | 32f9bc2 | 2014-07-12 19:13:54 +0800 | [diff] [blame] | 1080 | old_dir_entry = f2fs_parent_dir(old_inode, |
| 1081 | &old_dir_page); |
Jaegeuk Kim | 3e19886 | 2016-06-09 14:57:19 -0700 | [diff] [blame] | 1082 | if (!old_dir_entry) { |
Chao Yu | 91246c2 | 2016-07-19 08:27:47 +0800 | [diff] [blame] | 1083 | if (IS_ERR(old_dir_page)) |
| 1084 | err = PTR_ERR(old_dir_page); |
Chao Yu | 32f9bc2 | 2014-07-12 19:13:54 +0800 | [diff] [blame] | 1085 | goto out_new; |
Jaegeuk Kim | 3e19886 | 2016-06-09 14:57:19 -0700 | [diff] [blame] | 1086 | } |
Chao Yu | 32f9bc2 | 2014-07-12 19:13:54 +0800 | [diff] [blame] | 1087 | } |
| 1088 | |
| 1089 | if (S_ISDIR(new_inode->i_mode)) { |
Chao Yu | 32f9bc2 | 2014-07-12 19:13:54 +0800 | [diff] [blame] | 1090 | new_dir_entry = f2fs_parent_dir(new_inode, |
| 1091 | &new_dir_page); |
Jaegeuk Kim | 3e19886 | 2016-06-09 14:57:19 -0700 | [diff] [blame] | 1092 | if (!new_dir_entry) { |
Chao Yu | 91246c2 | 2016-07-19 08:27:47 +0800 | [diff] [blame] | 1093 | if (IS_ERR(new_dir_page)) |
| 1094 | err = PTR_ERR(new_dir_page); |
Chao Yu | 32f9bc2 | 2014-07-12 19:13:54 +0800 | [diff] [blame] | 1095 | goto out_old_dir; |
Jaegeuk Kim | 3e19886 | 2016-06-09 14:57:19 -0700 | [diff] [blame] | 1096 | } |
Chao Yu | 32f9bc2 | 2014-07-12 19:13:54 +0800 | [diff] [blame] | 1097 | } |
| 1098 | } |
| 1099 | |
| 1100 | /* |
| 1101 | * If cross rename between file and directory those are not |
| 1102 | * in the same directory, we will inc nlink of file's parent |
| 1103 | * later, so we should check upper boundary of its nlink. |
| 1104 | */ |
| 1105 | if ((!old_dir_entry || !new_dir_entry) && |
| 1106 | old_dir_entry != new_dir_entry) { |
| 1107 | old_nlink = old_dir_entry ? -1 : 1; |
| 1108 | new_nlink = -old_nlink; |
| 1109 | err = -EMLINK; |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1110 | if ((old_nlink > 0 && old_dir->i_nlink >= F2FS_LINK_MAX) || |
| 1111 | (new_nlink > 0 && new_dir->i_nlink >= F2FS_LINK_MAX)) |
Chao Yu | 32f9bc2 | 2014-07-12 19:13:54 +0800 | [diff] [blame] | 1112 | goto out_new_dir; |
| 1113 | } |
| 1114 | |
Jaegeuk Kim | 2c4db1a | 2016-01-07 14:15:04 -0800 | [diff] [blame] | 1115 | f2fs_balance_fs(sbi, true); |
Jaegeuk Kim | 00623e6 | 2015-12-22 11:56:08 -0800 | [diff] [blame] | 1116 | |
Chao Yu | 32f9bc2 | 2014-07-12 19:13:54 +0800 | [diff] [blame] | 1117 | f2fs_lock_op(sbi); |
| 1118 | |
Chao Yu | 32f9bc2 | 2014-07-12 19:13:54 +0800 | [diff] [blame] | 1119 | /* update ".." directory entry info of old dentry */ |
| 1120 | if (old_dir_entry) |
| 1121 | f2fs_set_link(old_inode, old_dir_entry, old_dir_page, new_dir); |
| 1122 | |
| 1123 | /* update ".." directory entry info of new dentry */ |
| 1124 | if (new_dir_entry) |
| 1125 | f2fs_set_link(new_inode, new_dir_entry, new_dir_page, old_dir); |
| 1126 | |
| 1127 | /* update directory entry info of old dir inode */ |
| 1128 | f2fs_set_link(old_dir, old_entry, old_page, new_inode); |
| 1129 | |
| 1130 | down_write(&F2FS_I(old_inode)->i_sem); |
| 1131 | file_lost_pino(old_inode); |
| 1132 | up_write(&F2FS_I(old_inode)->i_sem); |
| 1133 | |
Deepa Dinamani | 078cd82 | 2016-09-14 07:48:04 -0700 | [diff] [blame] | 1134 | old_dir->i_ctime = current_time(old_dir); |
Chao Yu | 32f9bc2 | 2014-07-12 19:13:54 +0800 | [diff] [blame] | 1135 | if (old_nlink) { |
| 1136 | down_write(&F2FS_I(old_dir)->i_sem); |
Jaegeuk Kim | a196124 | 2016-05-20 09:43:20 -0700 | [diff] [blame] | 1137 | f2fs_i_links_write(old_dir, old_nlink > 0); |
Chao Yu | 32f9bc2 | 2014-07-12 19:13:54 +0800 | [diff] [blame] | 1138 | up_write(&F2FS_I(old_dir)->i_sem); |
| 1139 | } |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1140 | f2fs_mark_inode_dirty_sync(old_dir, false); |
Chao Yu | 32f9bc2 | 2014-07-12 19:13:54 +0800 | [diff] [blame] | 1141 | |
| 1142 | /* update directory entry info of new dir inode */ |
| 1143 | f2fs_set_link(new_dir, new_entry, new_page, old_inode); |
| 1144 | |
| 1145 | down_write(&F2FS_I(new_inode)->i_sem); |
| 1146 | file_lost_pino(new_inode); |
| 1147 | up_write(&F2FS_I(new_inode)->i_sem); |
| 1148 | |
Deepa Dinamani | 078cd82 | 2016-09-14 07:48:04 -0700 | [diff] [blame] | 1149 | new_dir->i_ctime = current_time(new_dir); |
Chao Yu | 32f9bc2 | 2014-07-12 19:13:54 +0800 | [diff] [blame] | 1150 | if (new_nlink) { |
| 1151 | down_write(&F2FS_I(new_dir)->i_sem); |
Jaegeuk Kim | a196124 | 2016-05-20 09:43:20 -0700 | [diff] [blame] | 1152 | f2fs_i_links_write(new_dir, new_nlink > 0); |
Chao Yu | 32f9bc2 | 2014-07-12 19:13:54 +0800 | [diff] [blame] | 1153 | up_write(&F2FS_I(new_dir)->i_sem); |
| 1154 | } |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1155 | f2fs_mark_inode_dirty_sync(new_dir, false); |
Chao Yu | 32f9bc2 | 2014-07-12 19:13:54 +0800 | [diff] [blame] | 1156 | |
Chao Yu | e9a50e6 | 2018-03-08 14:22:56 +0800 | [diff] [blame] | 1157 | if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_STRICT) { |
Chao Yu | 6b4d6a8 | 2018-05-30 00:20:41 +0800 | [diff] [blame] | 1158 | f2fs_add_ino_entry(sbi, old_dir->i_ino, TRANS_DIR_INO); |
| 1159 | f2fs_add_ino_entry(sbi, new_dir->i_ino, TRANS_DIR_INO); |
Junling Zheng | 9a95481 | 2018-03-07 12:07:49 +0800 | [diff] [blame] | 1160 | } |
Jaegeuk Kim | 211cb7b | 2017-12-28 08:09:44 -0800 | [diff] [blame] | 1161 | |
Chao Yu | 32f9bc2 | 2014-07-12 19:13:54 +0800 | [diff] [blame] | 1162 | f2fs_unlock_op(sbi); |
Jaegeuk Kim | b7e1d80 | 2014-11-09 22:15:31 -0800 | [diff] [blame] | 1163 | |
| 1164 | if (IS_DIRSYNC(old_dir) || IS_DIRSYNC(new_dir)) |
| 1165 | f2fs_sync_fs(sbi->sb, 1); |
Sahitya Tummala | e5ddab1 | 2018-10-05 10:47:40 +0530 | [diff] [blame] | 1166 | |
| 1167 | f2fs_update_time(sbi, REQ_TIME); |
Chao Yu | 32f9bc2 | 2014-07-12 19:13:54 +0800 | [diff] [blame] | 1168 | return 0; |
Chao Yu | 32f9bc2 | 2014-07-12 19:13:54 +0800 | [diff] [blame] | 1169 | out_new_dir: |
| 1170 | if (new_dir_entry) { |
Chao Yu | 32f9bc2 | 2014-07-12 19:13:54 +0800 | [diff] [blame] | 1171 | f2fs_put_page(new_dir_page, 0); |
| 1172 | } |
| 1173 | out_old_dir: |
| 1174 | if (old_dir_entry) { |
Chao Yu | 32f9bc2 | 2014-07-12 19:13:54 +0800 | [diff] [blame] | 1175 | f2fs_put_page(old_dir_page, 0); |
| 1176 | } |
| 1177 | out_new: |
Chao Yu | 32f9bc2 | 2014-07-12 19:13:54 +0800 | [diff] [blame] | 1178 | f2fs_put_page(new_page, 0); |
| 1179 | out_old: |
Chao Yu | 32f9bc2 | 2014-07-12 19:13:54 +0800 | [diff] [blame] | 1180 | f2fs_put_page(old_page, 0); |
| 1181 | out: |
| 1182 | return err; |
| 1183 | } |
| 1184 | |
| 1185 | static int f2fs_rename2(struct inode *old_dir, struct dentry *old_dentry, |
| 1186 | struct inode *new_dir, struct dentry *new_dentry, |
| 1187 | unsigned int flags) |
| 1188 | { |
Eric Biggers | 8dfa646 | 2017-11-29 12:35:30 -0800 | [diff] [blame] | 1189 | int err; |
| 1190 | |
Chao Yu | 7e01e7ad | 2015-05-19 17:37:26 +0800 | [diff] [blame] | 1191 | if (flags & ~(RENAME_NOREPLACE | RENAME_EXCHANGE | RENAME_WHITEOUT)) |
Chao Yu | 32f9bc2 | 2014-07-12 19:13:54 +0800 | [diff] [blame] | 1192 | return -EINVAL; |
| 1193 | |
Eric Biggers | 8dfa646 | 2017-11-29 12:35:30 -0800 | [diff] [blame] | 1194 | err = fscrypt_prepare_rename(old_dir, old_dentry, new_dir, new_dentry, |
| 1195 | flags); |
| 1196 | if (err) |
| 1197 | return err; |
| 1198 | |
Chao Yu | 32f9bc2 | 2014-07-12 19:13:54 +0800 | [diff] [blame] | 1199 | if (flags & RENAME_EXCHANGE) { |
| 1200 | return f2fs_cross_rename(old_dir, old_dentry, |
| 1201 | new_dir, new_dentry); |
| 1202 | } |
| 1203 | /* |
| 1204 | * VFS has already handled the new dentry existence case, |
| 1205 | * here, we just deal with "RENAME_NOREPLACE" as regular rename. |
| 1206 | */ |
Chao Yu | 7e01e7ad | 2015-05-19 17:37:26 +0800 | [diff] [blame] | 1207 | return f2fs_rename(old_dir, old_dentry, new_dir, new_dentry, flags); |
Chao Yu | 32f9bc2 | 2014-07-12 19:13:54 +0800 | [diff] [blame] | 1208 | } |
| 1209 | |
Al Viro | 6b25539 | 2015-11-17 10:20:54 -0500 | [diff] [blame] | 1210 | static const char *f2fs_encrypted_get_link(struct dentry *dentry, |
Al Viro | fceef39 | 2015-12-29 15:58:39 -0500 | [diff] [blame] | 1211 | struct inode *inode, |
| 1212 | struct delayed_call *done) |
Chao Yu | 50732df | 2014-06-19 16:23:19 +0800 | [diff] [blame] | 1213 | { |
Eric Biggers | 45028b5 | 2018-01-11 23:26:49 -0500 | [diff] [blame] | 1214 | struct page *page; |
| 1215 | const char *target; |
Chao Yu | 50732df | 2014-06-19 16:23:19 +0800 | [diff] [blame] | 1216 | |
Al Viro | 6b25539 | 2015-11-17 10:20:54 -0500 | [diff] [blame] | 1217 | if (!dentry) |
| 1218 | return ERR_PTR(-ECHILD); |
| 1219 | |
Eric Biggers | 45028b5 | 2018-01-11 23:26:49 -0500 | [diff] [blame] | 1220 | page = read_mapping_page(inode->i_mapping, 0, NULL); |
| 1221 | if (IS_ERR(page)) |
| 1222 | return ERR_CAST(page); |
Chao Yu | 50732df | 2014-06-19 16:23:19 +0800 | [diff] [blame] | 1223 | |
Eric Biggers | 45028b5 | 2018-01-11 23:26:49 -0500 | [diff] [blame] | 1224 | target = fscrypt_get_symlink(inode, page_address(page), |
| 1225 | inode->i_sb->s_blocksize, done); |
| 1226 | put_page(page); |
| 1227 | return target; |
Chao Yu | 50732df | 2014-06-19 16:23:19 +0800 | [diff] [blame] | 1228 | } |
| 1229 | |
Jaegeuk Kim | cbaf042 | 2015-04-29 15:10:53 -0700 | [diff] [blame] | 1230 | const struct inode_operations f2fs_encrypted_symlink_inode_operations = { |
| 1231 | .readlink = generic_readlink, |
Al Viro | 6b25539 | 2015-11-17 10:20:54 -0500 | [diff] [blame] | 1232 | .get_link = f2fs_encrypted_get_link, |
Jaegeuk Kim | cbaf042 | 2015-04-29 15:10:53 -0700 | [diff] [blame] | 1233 | .getattr = f2fs_getattr, |
| 1234 | .setattr = f2fs_setattr, |
Chao Yu | 3a9e643 | 2015-12-31 18:20:10 +0800 | [diff] [blame] | 1235 | #ifdef CONFIG_F2FS_FS_XATTR |
Jaegeuk Kim | cbaf042 | 2015-04-29 15:10:53 -0700 | [diff] [blame] | 1236 | .listxattr = f2fs_listxattr, |
Chao Yu | 3a9e643 | 2015-12-31 18:20:10 +0800 | [diff] [blame] | 1237 | #endif |
Jaegeuk Kim | cbaf042 | 2015-04-29 15:10:53 -0700 | [diff] [blame] | 1238 | }; |
Jaegeuk Kim | cbaf042 | 2015-04-29 15:10:53 -0700 | [diff] [blame] | 1239 | |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 1240 | const struct inode_operations f2fs_dir_inode_operations = { |
| 1241 | .create = f2fs_create, |
| 1242 | .lookup = f2fs_lookup, |
| 1243 | .link = f2fs_link, |
| 1244 | .unlink = f2fs_unlink, |
| 1245 | .symlink = f2fs_symlink, |
| 1246 | .mkdir = f2fs_mkdir, |
| 1247 | .rmdir = f2fs_rmdir, |
| 1248 | .mknod = f2fs_mknod, |
Miklos Szeredi | 2773bf0 | 2016-09-27 11:03:58 +0200 | [diff] [blame] | 1249 | .rename = f2fs_rename2, |
Chao Yu | 50732df | 2014-06-19 16:23:19 +0800 | [diff] [blame] | 1250 | .tmpfile = f2fs_tmpfile, |
Jaegeuk Kim | 2d4d9fb5 | 2013-06-07 16:33:07 +0900 | [diff] [blame] | 1251 | .getattr = f2fs_getattr, |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 1252 | .setattr = f2fs_setattr, |
| 1253 | .get_acl = f2fs_get_acl, |
Christoph Hellwig | a6dda0e | 2013-12-20 05:16:45 -0800 | [diff] [blame] | 1254 | .set_acl = f2fs_set_acl, |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 1255 | #ifdef CONFIG_F2FS_FS_XATTR |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 1256 | .listxattr = f2fs_listxattr, |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 1257 | #endif |
| 1258 | }; |
| 1259 | |
| 1260 | const struct inode_operations f2fs_symlink_inode_operations = { |
| 1261 | .readlink = generic_readlink, |
Al Viro | 6b25539 | 2015-11-17 10:20:54 -0500 | [diff] [blame] | 1262 | .get_link = f2fs_get_link, |
Jaegeuk Kim | 2d4d9fb5 | 2013-06-07 16:33:07 +0900 | [diff] [blame] | 1263 | .getattr = f2fs_getattr, |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 1264 | .setattr = f2fs_setattr, |
| 1265 | #ifdef CONFIG_F2FS_FS_XATTR |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 1266 | .listxattr = f2fs_listxattr, |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 1267 | #endif |
| 1268 | }; |
| 1269 | |
| 1270 | const struct inode_operations f2fs_special_inode_operations = { |
Jaegeuk Kim | 2d4d9fb5 | 2013-06-07 16:33:07 +0900 | [diff] [blame] | 1271 | .getattr = f2fs_getattr, |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 1272 | .setattr = f2fs_setattr, |
| 1273 | .get_acl = f2fs_get_acl, |
Christoph Hellwig | a6dda0e | 2013-12-20 05:16:45 -0800 | [diff] [blame] | 1274 | .set_acl = f2fs_set_acl, |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 1275 | #ifdef CONFIG_F2FS_FS_XATTR |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 1276 | .listxattr = f2fs_listxattr, |
Jaegeuk Kim | 57397d8 | 2012-11-02 17:11:10 +0900 | [diff] [blame] | 1277 | #endif |
| 1278 | }; |