Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * linux/fs/hpfs/namei.c |
| 3 | * |
| 4 | * Mikulas Patocka (mikulas@artax.karlin.mff.cuni.cz), 1998-1999 |
| 5 | * |
| 6 | * adding & removing files & directories |
| 7 | */ |
Alexey Dobriyan | e8edc6e | 2007-05-21 01:22:52 +0400 | [diff] [blame] | 8 | #include <linux/sched.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 9 | #include "hpfs_fn.h" |
| 10 | |
Mikulas Patocka | f49a26e | 2015-09-02 22:51:53 +0200 | [diff] [blame] | 11 | static void hpfs_update_directory_times(struct inode *dir) |
| 12 | { |
| 13 | time_t t = get_seconds(); |
| 14 | if (t == dir->i_mtime.tv_sec && |
| 15 | t == dir->i_ctime.tv_sec) |
| 16 | return; |
| 17 | dir->i_mtime.tv_sec = dir->i_ctime.tv_sec = t; |
| 18 | dir->i_mtime.tv_nsec = dir->i_ctime.tv_nsec = 0; |
| 19 | hpfs_write_inode_nolock(dir); |
| 20 | } |
| 21 | |
Al Viro | 18bb1db | 2011-07-26 01:41:39 -0400 | [diff] [blame] | 22 | static int hpfs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 23 | { |
Al Viro | 7e7742e | 2010-01-31 17:09:29 -0500 | [diff] [blame] | 24 | const unsigned char *name = dentry->d_name.name; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 25 | unsigned len = dentry->d_name.len; |
| 26 | struct quad_buffer_head qbh0; |
| 27 | struct buffer_head *bh; |
| 28 | struct hpfs_dirent *de; |
| 29 | struct fnode *fnode; |
| 30 | struct dnode *dnode; |
| 31 | struct inode *result; |
| 32 | fnode_secno fno; |
| 33 | dnode_secno dno; |
| 34 | int r; |
| 35 | struct hpfs_dirent dee; |
| 36 | int err; |
Al Viro | 7e7742e | 2010-01-31 17:09:29 -0500 | [diff] [blame] | 37 | if ((err = hpfs_chk_name(name, &len))) return err==-ENOENT ? -EINVAL : err; |
Arnd Bergmann | 9a311b9 | 2011-01-22 20:26:12 +0100 | [diff] [blame] | 38 | hpfs_lock(dir->i_sb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 39 | err = -ENOSPC; |
| 40 | fnode = hpfs_alloc_fnode(dir->i_sb, hpfs_i(dir)->i_dno, &fno, &bh); |
| 41 | if (!fnode) |
| 42 | goto bail; |
Mikulas Patocka | 7d23ce3 | 2011-05-08 20:43:06 +0200 | [diff] [blame] | 43 | dnode = hpfs_alloc_dnode(dir->i_sb, fno, &dno, &qbh0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 44 | if (!dnode) |
| 45 | goto bail1; |
| 46 | memset(&dee, 0, sizeof dee); |
| 47 | dee.directory = 1; |
| 48 | if (!(mode & 0222)) dee.read_only = 1; |
| 49 | /*dee.archive = 0;*/ |
| 50 | dee.hidden = name[0] == '.'; |
Mikulas Patocka | 0b69760 | 2011-05-08 20:44:26 +0200 | [diff] [blame] | 51 | dee.fnode = cpu_to_le32(fno); |
| 52 | dee.creation_date = dee.write_date = dee.read_date = cpu_to_le32(gmt_to_local(dir->i_sb, get_seconds())); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 53 | result = new_inode(dir->i_sb); |
| 54 | if (!result) |
| 55 | goto bail2; |
| 56 | hpfs_init_inode(result); |
| 57 | result->i_ino = fno; |
| 58 | hpfs_i(result)->i_parent_dir = dir->i_ino; |
| 59 | hpfs_i(result)->i_dno = dno; |
Mikulas Patocka | 0b69760 | 2011-05-08 20:44:26 +0200 | [diff] [blame] | 60 | result->i_ctime.tv_sec = result->i_mtime.tv_sec = result->i_atime.tv_sec = local_to_gmt(dir->i_sb, le32_to_cpu(dee.creation_date)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 61 | result->i_ctime.tv_nsec = 0; |
| 62 | result->i_mtime.tv_nsec = 0; |
| 63 | result->i_atime.tv_nsec = 0; |
| 64 | hpfs_i(result)->i_ea_size = 0; |
| 65 | result->i_mode |= S_IFDIR; |
| 66 | result->i_op = &hpfs_dir_iops; |
| 67 | result->i_fop = &hpfs_dir_ops; |
| 68 | result->i_blocks = 4; |
| 69 | result->i_size = 2048; |
Miklos Szeredi | bfe8684 | 2011-10-28 14:13:29 +0200 | [diff] [blame] | 70 | set_nlink(result, 2); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 71 | if (dee.read_only) |
| 72 | result->i_mode &= ~0222; |
| 73 | |
Mikulas Patocka | 7d23ce3 | 2011-05-08 20:43:06 +0200 | [diff] [blame] | 74 | r = hpfs_add_dirent(dir, name, len, &dee); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 75 | if (r == 1) |
| 76 | goto bail3; |
| 77 | if (r == -1) { |
| 78 | err = -EEXIST; |
| 79 | goto bail3; |
| 80 | } |
| 81 | fnode->len = len; |
| 82 | memcpy(fnode->name, name, len > 15 ? 15 : len); |
Mikulas Patocka | 0b69760 | 2011-05-08 20:44:26 +0200 | [diff] [blame] | 83 | fnode->up = cpu_to_le32(dir->i_ino); |
Al Viro | c4c9954 | 2012-04-06 14:30:07 -0400 | [diff] [blame] | 84 | fnode->flags |= FNODE_dir; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 85 | fnode->btree.n_free_nodes = 7; |
| 86 | fnode->btree.n_used_nodes = 1; |
Mikulas Patocka | 0b69760 | 2011-05-08 20:44:26 +0200 | [diff] [blame] | 87 | fnode->btree.first_free = cpu_to_le16(0x14); |
| 88 | fnode->u.external[0].disk_secno = cpu_to_le32(dno); |
| 89 | fnode->u.external[0].file_secno = cpu_to_le32(-1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 90 | dnode->root_dnode = 1; |
Mikulas Patocka | 0b69760 | 2011-05-08 20:44:26 +0200 | [diff] [blame] | 91 | dnode->up = cpu_to_le32(fno); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 92 | de = hpfs_add_de(dir->i_sb, dnode, "\001\001", 2, 0); |
Mikulas Patocka | 0b69760 | 2011-05-08 20:44:26 +0200 | [diff] [blame] | 93 | de->creation_date = de->write_date = de->read_date = cpu_to_le32(gmt_to_local(dir->i_sb, get_seconds())); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 94 | if (!(mode & 0222)) de->read_only = 1; |
| 95 | de->first = de->directory = 1; |
| 96 | /*de->hidden = de->system = 0;*/ |
Mikulas Patocka | 0b69760 | 2011-05-08 20:44:26 +0200 | [diff] [blame] | 97 | de->fnode = cpu_to_le32(fno); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 98 | mark_buffer_dirty(bh); |
| 99 | brelse(bh); |
| 100 | hpfs_mark_4buffers_dirty(&qbh0); |
| 101 | hpfs_brelse4(&qbh0); |
Dave Hansen | d8c76e6 | 2006-09-30 23:29:04 -0700 | [diff] [blame] | 102 | inc_nlink(dir); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 103 | insert_inode_hash(result); |
| 104 | |
Eric W. Biederman | 0e1a43c | 2012-02-07 16:27:53 -0800 | [diff] [blame] | 105 | if (!uid_eq(result->i_uid, current_fsuid()) || |
| 106 | !gid_eq(result->i_gid, current_fsgid()) || |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 107 | result->i_mode != (mode | S_IFDIR)) { |
David Howells | de395b8 | 2008-11-14 10:38:55 +1100 | [diff] [blame] | 108 | result->i_uid = current_fsuid(); |
| 109 | result->i_gid = current_fsgid(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 110 | result->i_mode = mode | S_IFDIR; |
| 111 | hpfs_write_inode_nolock(result); |
| 112 | } |
Mikulas Patocka | f49a26e | 2015-09-02 22:51:53 +0200 | [diff] [blame] | 113 | hpfs_update_directory_times(dir); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 114 | d_instantiate(dentry, result); |
Arnd Bergmann | 9a311b9 | 2011-01-22 20:26:12 +0100 | [diff] [blame] | 115 | hpfs_unlock(dir->i_sb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 116 | return 0; |
| 117 | bail3: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 118 | iput(result); |
| 119 | bail2: |
| 120 | hpfs_brelse4(&qbh0); |
| 121 | hpfs_free_dnode(dir->i_sb, dno); |
| 122 | bail1: |
| 123 | brelse(bh); |
| 124 | hpfs_free_sectors(dir->i_sb, fno, 1); |
| 125 | bail: |
Arnd Bergmann | 9a311b9 | 2011-01-22 20:26:12 +0100 | [diff] [blame] | 126 | hpfs_unlock(dir->i_sb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 127 | return err; |
| 128 | } |
| 129 | |
Al Viro | ebfc3b4 | 2012-06-10 18:05:36 -0400 | [diff] [blame] | 130 | static int hpfs_create(struct inode *dir, struct dentry *dentry, umode_t mode, bool excl) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 131 | { |
Al Viro | 7e7742e | 2010-01-31 17:09:29 -0500 | [diff] [blame] | 132 | const unsigned char *name = dentry->d_name.name; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 133 | unsigned len = dentry->d_name.len; |
| 134 | struct inode *result = NULL; |
| 135 | struct buffer_head *bh; |
| 136 | struct fnode *fnode; |
| 137 | fnode_secno fno; |
| 138 | int r; |
| 139 | struct hpfs_dirent dee; |
| 140 | int err; |
Al Viro | 7e7742e | 2010-01-31 17:09:29 -0500 | [diff] [blame] | 141 | if ((err = hpfs_chk_name(name, &len))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 142 | return err==-ENOENT ? -EINVAL : err; |
Arnd Bergmann | 9a311b9 | 2011-01-22 20:26:12 +0100 | [diff] [blame] | 143 | hpfs_lock(dir->i_sb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 144 | err = -ENOSPC; |
| 145 | fnode = hpfs_alloc_fnode(dir->i_sb, hpfs_i(dir)->i_dno, &fno, &bh); |
| 146 | if (!fnode) |
| 147 | goto bail; |
| 148 | memset(&dee, 0, sizeof dee); |
| 149 | if (!(mode & 0222)) dee.read_only = 1; |
| 150 | dee.archive = 1; |
| 151 | dee.hidden = name[0] == '.'; |
Mikulas Patocka | 0b69760 | 2011-05-08 20:44:26 +0200 | [diff] [blame] | 152 | dee.fnode = cpu_to_le32(fno); |
| 153 | dee.creation_date = dee.write_date = dee.read_date = cpu_to_le32(gmt_to_local(dir->i_sb, get_seconds())); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 154 | |
| 155 | result = new_inode(dir->i_sb); |
| 156 | if (!result) |
| 157 | goto bail1; |
| 158 | |
| 159 | hpfs_init_inode(result); |
| 160 | result->i_ino = fno; |
| 161 | result->i_mode |= S_IFREG; |
| 162 | result->i_mode &= ~0111; |
| 163 | result->i_op = &hpfs_file_iops; |
| 164 | result->i_fop = &hpfs_file_ops; |
Miklos Szeredi | bfe8684 | 2011-10-28 14:13:29 +0200 | [diff] [blame] | 165 | set_nlink(result, 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 166 | hpfs_i(result)->i_parent_dir = dir->i_ino; |
Mikulas Patocka | 0b69760 | 2011-05-08 20:44:26 +0200 | [diff] [blame] | 167 | result->i_ctime.tv_sec = result->i_mtime.tv_sec = result->i_atime.tv_sec = local_to_gmt(dir->i_sb, le32_to_cpu(dee.creation_date)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 168 | result->i_ctime.tv_nsec = 0; |
| 169 | result->i_mtime.tv_nsec = 0; |
| 170 | result->i_atime.tv_nsec = 0; |
| 171 | hpfs_i(result)->i_ea_size = 0; |
| 172 | if (dee.read_only) |
| 173 | result->i_mode &= ~0222; |
| 174 | result->i_blocks = 1; |
| 175 | result->i_size = 0; |
| 176 | result->i_data.a_ops = &hpfs_aops; |
| 177 | hpfs_i(result)->mmu_private = 0; |
| 178 | |
Mikulas Patocka | 7d23ce3 | 2011-05-08 20:43:06 +0200 | [diff] [blame] | 179 | r = hpfs_add_dirent(dir, name, len, &dee); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 180 | if (r == 1) |
| 181 | goto bail2; |
| 182 | if (r == -1) { |
| 183 | err = -EEXIST; |
| 184 | goto bail2; |
| 185 | } |
| 186 | fnode->len = len; |
| 187 | memcpy(fnode->name, name, len > 15 ? 15 : len); |
Mikulas Patocka | 0b69760 | 2011-05-08 20:44:26 +0200 | [diff] [blame] | 188 | fnode->up = cpu_to_le32(dir->i_ino); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 189 | mark_buffer_dirty(bh); |
| 190 | brelse(bh); |
| 191 | |
| 192 | insert_inode_hash(result); |
| 193 | |
Eric W. Biederman | 0e1a43c | 2012-02-07 16:27:53 -0800 | [diff] [blame] | 194 | if (!uid_eq(result->i_uid, current_fsuid()) || |
| 195 | !gid_eq(result->i_gid, current_fsgid()) || |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 196 | result->i_mode != (mode | S_IFREG)) { |
David Howells | de395b8 | 2008-11-14 10:38:55 +1100 | [diff] [blame] | 197 | result->i_uid = current_fsuid(); |
| 198 | result->i_gid = current_fsgid(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 199 | result->i_mode = mode | S_IFREG; |
| 200 | hpfs_write_inode_nolock(result); |
| 201 | } |
Mikulas Patocka | f49a26e | 2015-09-02 22:51:53 +0200 | [diff] [blame] | 202 | hpfs_update_directory_times(dir); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 203 | d_instantiate(dentry, result); |
Arnd Bergmann | 9a311b9 | 2011-01-22 20:26:12 +0100 | [diff] [blame] | 204 | hpfs_unlock(dir->i_sb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 205 | return 0; |
| 206 | |
| 207 | bail2: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 208 | iput(result); |
| 209 | bail1: |
| 210 | brelse(bh); |
| 211 | hpfs_free_sectors(dir->i_sb, fno, 1); |
| 212 | bail: |
Arnd Bergmann | 9a311b9 | 2011-01-22 20:26:12 +0100 | [diff] [blame] | 213 | hpfs_unlock(dir->i_sb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 214 | return err; |
| 215 | } |
| 216 | |
Al Viro | 1a67aaf | 2011-07-26 01:52:52 -0400 | [diff] [blame] | 217 | static int hpfs_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t rdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 218 | { |
Al Viro | 7e7742e | 2010-01-31 17:09:29 -0500 | [diff] [blame] | 219 | const unsigned char *name = dentry->d_name.name; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 220 | unsigned len = dentry->d_name.len; |
| 221 | struct buffer_head *bh; |
| 222 | struct fnode *fnode; |
| 223 | fnode_secno fno; |
| 224 | int r; |
| 225 | struct hpfs_dirent dee; |
| 226 | struct inode *result = NULL; |
| 227 | int err; |
Al Viro | 7e7742e | 2010-01-31 17:09:29 -0500 | [diff] [blame] | 228 | if ((err = hpfs_chk_name(name, &len))) return err==-ENOENT ? -EINVAL : err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 229 | if (hpfs_sb(dir->i_sb)->sb_eas < 2) return -EPERM; |
Arnd Bergmann | 9a311b9 | 2011-01-22 20:26:12 +0100 | [diff] [blame] | 230 | hpfs_lock(dir->i_sb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 231 | err = -ENOSPC; |
| 232 | fnode = hpfs_alloc_fnode(dir->i_sb, hpfs_i(dir)->i_dno, &fno, &bh); |
| 233 | if (!fnode) |
| 234 | goto bail; |
| 235 | memset(&dee, 0, sizeof dee); |
| 236 | if (!(mode & 0222)) dee.read_only = 1; |
| 237 | dee.archive = 1; |
| 238 | dee.hidden = name[0] == '.'; |
Mikulas Patocka | 0b69760 | 2011-05-08 20:44:26 +0200 | [diff] [blame] | 239 | dee.fnode = cpu_to_le32(fno); |
| 240 | dee.creation_date = dee.write_date = dee.read_date = cpu_to_le32(gmt_to_local(dir->i_sb, get_seconds())); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 241 | |
| 242 | result = new_inode(dir->i_sb); |
| 243 | if (!result) |
| 244 | goto bail1; |
| 245 | |
| 246 | hpfs_init_inode(result); |
| 247 | result->i_ino = fno; |
| 248 | hpfs_i(result)->i_parent_dir = dir->i_ino; |
Mikulas Patocka | 0b69760 | 2011-05-08 20:44:26 +0200 | [diff] [blame] | 249 | result->i_ctime.tv_sec = result->i_mtime.tv_sec = result->i_atime.tv_sec = local_to_gmt(dir->i_sb, le32_to_cpu(dee.creation_date)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 250 | result->i_ctime.tv_nsec = 0; |
| 251 | result->i_mtime.tv_nsec = 0; |
| 252 | result->i_atime.tv_nsec = 0; |
| 253 | hpfs_i(result)->i_ea_size = 0; |
David Howells | de395b8 | 2008-11-14 10:38:55 +1100 | [diff] [blame] | 254 | result->i_uid = current_fsuid(); |
| 255 | result->i_gid = current_fsgid(); |
Miklos Szeredi | bfe8684 | 2011-10-28 14:13:29 +0200 | [diff] [blame] | 256 | set_nlink(result, 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 257 | result->i_size = 0; |
| 258 | result->i_blocks = 1; |
| 259 | init_special_inode(result, mode, rdev); |
| 260 | |
Mikulas Patocka | 7d23ce3 | 2011-05-08 20:43:06 +0200 | [diff] [blame] | 261 | r = hpfs_add_dirent(dir, name, len, &dee); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 262 | if (r == 1) |
| 263 | goto bail2; |
| 264 | if (r == -1) { |
| 265 | err = -EEXIST; |
| 266 | goto bail2; |
| 267 | } |
| 268 | fnode->len = len; |
| 269 | memcpy(fnode->name, name, len > 15 ? 15 : len); |
Mikulas Patocka | 0b69760 | 2011-05-08 20:44:26 +0200 | [diff] [blame] | 270 | fnode->up = cpu_to_le32(dir->i_ino); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 271 | mark_buffer_dirty(bh); |
| 272 | |
| 273 | insert_inode_hash(result); |
| 274 | |
| 275 | hpfs_write_inode_nolock(result); |
Mikulas Patocka | f49a26e | 2015-09-02 22:51:53 +0200 | [diff] [blame] | 276 | hpfs_update_directory_times(dir); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 277 | d_instantiate(dentry, result); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 278 | brelse(bh); |
Arnd Bergmann | 9a311b9 | 2011-01-22 20:26:12 +0100 | [diff] [blame] | 279 | hpfs_unlock(dir->i_sb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 280 | return 0; |
| 281 | bail2: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 282 | iput(result); |
| 283 | bail1: |
| 284 | brelse(bh); |
| 285 | hpfs_free_sectors(dir->i_sb, fno, 1); |
| 286 | bail: |
Arnd Bergmann | 9a311b9 | 2011-01-22 20:26:12 +0100 | [diff] [blame] | 287 | hpfs_unlock(dir->i_sb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 288 | return err; |
| 289 | } |
| 290 | |
| 291 | static int hpfs_symlink(struct inode *dir, struct dentry *dentry, const char *symlink) |
| 292 | { |
Al Viro | 7e7742e | 2010-01-31 17:09:29 -0500 | [diff] [blame] | 293 | const unsigned char *name = dentry->d_name.name; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 294 | unsigned len = dentry->d_name.len; |
| 295 | struct buffer_head *bh; |
| 296 | struct fnode *fnode; |
| 297 | fnode_secno fno; |
| 298 | int r; |
| 299 | struct hpfs_dirent dee; |
| 300 | struct inode *result; |
| 301 | int err; |
Al Viro | 7e7742e | 2010-01-31 17:09:29 -0500 | [diff] [blame] | 302 | if ((err = hpfs_chk_name(name, &len))) return err==-ENOENT ? -EINVAL : err; |
Arnd Bergmann | 9a311b9 | 2011-01-22 20:26:12 +0100 | [diff] [blame] | 303 | hpfs_lock(dir->i_sb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 304 | if (hpfs_sb(dir->i_sb)->sb_eas < 2) { |
Arnd Bergmann | 9a311b9 | 2011-01-22 20:26:12 +0100 | [diff] [blame] | 305 | hpfs_unlock(dir->i_sb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 306 | return -EPERM; |
| 307 | } |
| 308 | err = -ENOSPC; |
| 309 | fnode = hpfs_alloc_fnode(dir->i_sb, hpfs_i(dir)->i_dno, &fno, &bh); |
| 310 | if (!fnode) |
| 311 | goto bail; |
| 312 | memset(&dee, 0, sizeof dee); |
| 313 | dee.archive = 1; |
| 314 | dee.hidden = name[0] == '.'; |
Mikulas Patocka | 0b69760 | 2011-05-08 20:44:26 +0200 | [diff] [blame] | 315 | dee.fnode = cpu_to_le32(fno); |
| 316 | dee.creation_date = dee.write_date = dee.read_date = cpu_to_le32(gmt_to_local(dir->i_sb, get_seconds())); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 317 | |
| 318 | result = new_inode(dir->i_sb); |
| 319 | if (!result) |
| 320 | goto bail1; |
| 321 | result->i_ino = fno; |
| 322 | hpfs_init_inode(result); |
| 323 | hpfs_i(result)->i_parent_dir = dir->i_ino; |
Mikulas Patocka | 0b69760 | 2011-05-08 20:44:26 +0200 | [diff] [blame] | 324 | result->i_ctime.tv_sec = result->i_mtime.tv_sec = result->i_atime.tv_sec = local_to_gmt(dir->i_sb, le32_to_cpu(dee.creation_date)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 325 | result->i_ctime.tv_nsec = 0; |
| 326 | result->i_mtime.tv_nsec = 0; |
| 327 | result->i_atime.tv_nsec = 0; |
| 328 | hpfs_i(result)->i_ea_size = 0; |
| 329 | result->i_mode = S_IFLNK | 0777; |
David Howells | de395b8 | 2008-11-14 10:38:55 +1100 | [diff] [blame] | 330 | result->i_uid = current_fsuid(); |
| 331 | result->i_gid = current_fsgid(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 332 | result->i_blocks = 1; |
Miklos Szeredi | bfe8684 | 2011-10-28 14:13:29 +0200 | [diff] [blame] | 333 | set_nlink(result, 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 334 | result->i_size = strlen(symlink); |
| 335 | result->i_op = &page_symlink_inode_operations; |
| 336 | result->i_data.a_ops = &hpfs_symlink_aops; |
| 337 | |
Mikulas Patocka | 7d23ce3 | 2011-05-08 20:43:06 +0200 | [diff] [blame] | 338 | r = hpfs_add_dirent(dir, name, len, &dee); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 339 | if (r == 1) |
| 340 | goto bail2; |
| 341 | if (r == -1) { |
| 342 | err = -EEXIST; |
| 343 | goto bail2; |
| 344 | } |
| 345 | fnode->len = len; |
| 346 | memcpy(fnode->name, name, len > 15 ? 15 : len); |
Mikulas Patocka | 0b69760 | 2011-05-08 20:44:26 +0200 | [diff] [blame] | 347 | fnode->up = cpu_to_le32(dir->i_ino); |
Al Viro | 7e7742e | 2010-01-31 17:09:29 -0500 | [diff] [blame] | 348 | hpfs_set_ea(result, fnode, "SYMLINK", symlink, strlen(symlink)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 349 | mark_buffer_dirty(bh); |
| 350 | brelse(bh); |
| 351 | |
| 352 | insert_inode_hash(result); |
| 353 | |
| 354 | hpfs_write_inode_nolock(result); |
Mikulas Patocka | f49a26e | 2015-09-02 22:51:53 +0200 | [diff] [blame] | 355 | hpfs_update_directory_times(dir); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 356 | d_instantiate(dentry, result); |
Arnd Bergmann | 9a311b9 | 2011-01-22 20:26:12 +0100 | [diff] [blame] | 357 | hpfs_unlock(dir->i_sb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 358 | return 0; |
| 359 | bail2: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 360 | iput(result); |
| 361 | bail1: |
| 362 | brelse(bh); |
| 363 | hpfs_free_sectors(dir->i_sb, fno, 1); |
| 364 | bail: |
Arnd Bergmann | 9a311b9 | 2011-01-22 20:26:12 +0100 | [diff] [blame] | 365 | hpfs_unlock(dir->i_sb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 366 | return err; |
| 367 | } |
| 368 | |
| 369 | static int hpfs_unlink(struct inode *dir, struct dentry *dentry) |
| 370 | { |
Al Viro | 7e7742e | 2010-01-31 17:09:29 -0500 | [diff] [blame] | 371 | const unsigned char *name = dentry->d_name.name; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 372 | unsigned len = dentry->d_name.len; |
| 373 | struct quad_buffer_head qbh; |
| 374 | struct hpfs_dirent *de; |
David Howells | 2b0143b | 2015-03-17 22:25:59 +0000 | [diff] [blame] | 375 | struct inode *inode = d_inode(dentry); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 376 | dnode_secno dno; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 377 | int r; |
| 378 | int rep = 0; |
| 379 | int err; |
| 380 | |
Arnd Bergmann | 9a311b9 | 2011-01-22 20:26:12 +0100 | [diff] [blame] | 381 | hpfs_lock(dir->i_sb); |
Al Viro | 7e7742e | 2010-01-31 17:09:29 -0500 | [diff] [blame] | 382 | hpfs_adjust_length(name, &len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 383 | again: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 384 | err = -ENOENT; |
Al Viro | 7e7742e | 2010-01-31 17:09:29 -0500 | [diff] [blame] | 385 | de = map_dirent(dir, hpfs_i(dir)->i_dno, name, len, &dno, &qbh); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 386 | if (!de) |
| 387 | goto out; |
| 388 | |
| 389 | err = -EPERM; |
| 390 | if (de->first) |
| 391 | goto out1; |
| 392 | |
| 393 | err = -EISDIR; |
| 394 | if (de->directory) |
| 395 | goto out1; |
| 396 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 397 | r = hpfs_remove_dirent(dir, dno, de, &qbh, 1); |
| 398 | switch (r) { |
| 399 | case 1: |
| 400 | hpfs_error(dir->i_sb, "there was error when removing dirent"); |
| 401 | err = -EFSERROR; |
| 402 | break; |
| 403 | case 2: /* no space for deleting, try to truncate file */ |
| 404 | |
| 405 | err = -ENOSPC; |
| 406 | if (rep++) |
| 407 | break; |
| 408 | |
Al Viro | e21e709 | 2010-02-01 11:05:16 -0500 | [diff] [blame] | 409 | dentry_unhash(dentry); |
| 410 | if (!d_unhashed(dentry)) { |
Arnd Bergmann | 9a311b9 | 2011-01-22 20:26:12 +0100 | [diff] [blame] | 411 | hpfs_unlock(dir->i_sb); |
Al Viro | e21e709 | 2010-02-01 11:05:16 -0500 | [diff] [blame] | 412 | return -ENOSPC; |
| 413 | } |
Al Viro | 2830ba7 | 2011-06-20 19:16:29 -0400 | [diff] [blame] | 414 | if (generic_permission(inode, MAY_WRITE) || |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 415 | !S_ISREG(inode->i_mode) || |
| 416 | get_write_access(inode)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 417 | d_rehash(dentry); |
| 418 | } else { |
| 419 | struct iattr newattrs; |
Fabian Frederick | 14da17f | 2014-06-06 14:36:34 -0700 | [diff] [blame] | 420 | /*pr_info("truncating file before delete.\n");*/ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 421 | newattrs.ia_size = 0; |
| 422 | newattrs.ia_valid = ATTR_SIZE | ATTR_CTIME; |
J. Bruce Fields | 27ac0ff | 2011-09-20 17:19:26 -0400 | [diff] [blame] | 423 | err = notify_change(dentry, &newattrs, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 424 | put_write_access(inode); |
| 425 | if (!err) |
| 426 | goto again; |
| 427 | } |
Arnd Bergmann | 9a311b9 | 2011-01-22 20:26:12 +0100 | [diff] [blame] | 428 | hpfs_unlock(dir->i_sb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 429 | return -ENOSPC; |
| 430 | default: |
Dave Hansen | 9a53c3a | 2006-09-30 23:29:03 -0700 | [diff] [blame] | 431 | drop_nlink(inode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 432 | err = 0; |
| 433 | } |
| 434 | goto out; |
| 435 | |
| 436 | out1: |
| 437 | hpfs_brelse4(&qbh); |
| 438 | out: |
Mikulas Patocka | f49a26e | 2015-09-02 22:51:53 +0200 | [diff] [blame] | 439 | if (!err) |
| 440 | hpfs_update_directory_times(dir); |
Arnd Bergmann | 9a311b9 | 2011-01-22 20:26:12 +0100 | [diff] [blame] | 441 | hpfs_unlock(dir->i_sb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 442 | return err; |
| 443 | } |
| 444 | |
| 445 | static int hpfs_rmdir(struct inode *dir, struct dentry *dentry) |
| 446 | { |
Al Viro | 7e7742e | 2010-01-31 17:09:29 -0500 | [diff] [blame] | 447 | const unsigned char *name = dentry->d_name.name; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 448 | unsigned len = dentry->d_name.len; |
| 449 | struct quad_buffer_head qbh; |
| 450 | struct hpfs_dirent *de; |
David Howells | 2b0143b | 2015-03-17 22:25:59 +0000 | [diff] [blame] | 451 | struct inode *inode = d_inode(dentry); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 452 | dnode_secno dno; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 453 | int n_items = 0; |
| 454 | int err; |
| 455 | int r; |
| 456 | |
Al Viro | 7e7742e | 2010-01-31 17:09:29 -0500 | [diff] [blame] | 457 | hpfs_adjust_length(name, &len); |
Arnd Bergmann | 9a311b9 | 2011-01-22 20:26:12 +0100 | [diff] [blame] | 458 | hpfs_lock(dir->i_sb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 459 | err = -ENOENT; |
Al Viro | 7e7742e | 2010-01-31 17:09:29 -0500 | [diff] [blame] | 460 | de = map_dirent(dir, hpfs_i(dir)->i_dno, name, len, &dno, &qbh); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 461 | if (!de) |
| 462 | goto out; |
| 463 | |
| 464 | err = -EPERM; |
| 465 | if (de->first) |
| 466 | goto out1; |
| 467 | |
| 468 | err = -ENOTDIR; |
| 469 | if (!de->directory) |
| 470 | goto out1; |
| 471 | |
| 472 | hpfs_count_dnodes(dir->i_sb, hpfs_i(inode)->i_dno, NULL, NULL, &n_items); |
| 473 | err = -ENOTEMPTY; |
| 474 | if (n_items) |
| 475 | goto out1; |
| 476 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 477 | r = hpfs_remove_dirent(dir, dno, de, &qbh, 1); |
| 478 | switch (r) { |
| 479 | case 1: |
| 480 | hpfs_error(dir->i_sb, "there was error when removing dirent"); |
| 481 | err = -EFSERROR; |
| 482 | break; |
| 483 | case 2: |
| 484 | err = -ENOSPC; |
| 485 | break; |
| 486 | default: |
Dave Hansen | 9a53c3a | 2006-09-30 23:29:03 -0700 | [diff] [blame] | 487 | drop_nlink(dir); |
Dave Hansen | ce71ec3 | 2006-09-30 23:29:06 -0700 | [diff] [blame] | 488 | clear_nlink(inode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 489 | err = 0; |
| 490 | } |
| 491 | goto out; |
| 492 | out1: |
| 493 | hpfs_brelse4(&qbh); |
| 494 | out: |
Mikulas Patocka | f49a26e | 2015-09-02 22:51:53 +0200 | [diff] [blame] | 495 | if (!err) |
| 496 | hpfs_update_directory_times(dir); |
Arnd Bergmann | 9a311b9 | 2011-01-22 20:26:12 +0100 | [diff] [blame] | 497 | hpfs_unlock(dir->i_sb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 498 | return err; |
| 499 | } |
| 500 | |
| 501 | static int hpfs_symlink_readpage(struct file *file, struct page *page) |
| 502 | { |
| 503 | char *link = kmap(page); |
| 504 | struct inode *i = page->mapping->host; |
| 505 | struct fnode *fnode; |
| 506 | struct buffer_head *bh; |
| 507 | int err; |
| 508 | |
| 509 | err = -EIO; |
Arnd Bergmann | 9a311b9 | 2011-01-22 20:26:12 +0100 | [diff] [blame] | 510 | hpfs_lock(i->i_sb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 511 | if (!(fnode = hpfs_map_fnode(i->i_sb, i->i_ino, &bh))) |
| 512 | goto fail; |
| 513 | err = hpfs_read_ea(i->i_sb, fnode, "SYMLINK", link, PAGE_SIZE); |
| 514 | brelse(bh); |
| 515 | if (err) |
| 516 | goto fail; |
Arnd Bergmann | 9a311b9 | 2011-01-22 20:26:12 +0100 | [diff] [blame] | 517 | hpfs_unlock(i->i_sb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 518 | SetPageUptodate(page); |
| 519 | kunmap(page); |
| 520 | unlock_page(page); |
| 521 | return 0; |
| 522 | |
| 523 | fail: |
Arnd Bergmann | 9a311b9 | 2011-01-22 20:26:12 +0100 | [diff] [blame] | 524 | hpfs_unlock(i->i_sb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 525 | SetPageError(page); |
| 526 | kunmap(page); |
| 527 | unlock_page(page); |
| 528 | return err; |
| 529 | } |
| 530 | |
Christoph Hellwig | f5e54d6 | 2006-06-28 04:26:44 -0700 | [diff] [blame] | 531 | const struct address_space_operations hpfs_symlink_aops = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 532 | .readpage = hpfs_symlink_readpage |
| 533 | }; |
| 534 | |
| 535 | static int hpfs_rename(struct inode *old_dir, struct dentry *old_dentry, |
| 536 | struct inode *new_dir, struct dentry *new_dentry) |
| 537 | { |
Al Viro | 7e7742e | 2010-01-31 17:09:29 -0500 | [diff] [blame] | 538 | const unsigned char *old_name = old_dentry->d_name.name; |
| 539 | unsigned old_len = old_dentry->d_name.len; |
| 540 | const unsigned char *new_name = new_dentry->d_name.name; |
| 541 | unsigned new_len = new_dentry->d_name.len; |
David Howells | 2b0143b | 2015-03-17 22:25:59 +0000 | [diff] [blame] | 542 | struct inode *i = d_inode(old_dentry); |
| 543 | struct inode *new_inode = d_inode(new_dentry); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 544 | struct quad_buffer_head qbh, qbh1; |
| 545 | struct hpfs_dirent *dep, *nde; |
| 546 | struct hpfs_dirent de; |
| 547 | dnode_secno dno; |
| 548 | int r; |
| 549 | struct buffer_head *bh; |
| 550 | struct fnode *fnode; |
| 551 | int err; |
Sage Weil | e4eaac0 | 2011-05-24 13:06:07 -0700 | [diff] [blame] | 552 | |
Al Viro | 7e7742e | 2010-01-31 17:09:29 -0500 | [diff] [blame] | 553 | if ((err = hpfs_chk_name(new_name, &new_len))) return err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 554 | err = 0; |
Al Viro | 7e7742e | 2010-01-31 17:09:29 -0500 | [diff] [blame] | 555 | hpfs_adjust_length(old_name, &old_len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 556 | |
Arnd Bergmann | 9a311b9 | 2011-01-22 20:26:12 +0100 | [diff] [blame] | 557 | hpfs_lock(i->i_sb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 558 | /* order doesn't matter, due to VFS exclusion */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 559 | |
| 560 | /* Erm? Moving over the empty non-busy directory is perfectly legal */ |
| 561 | if (new_inode && S_ISDIR(new_inode->i_mode)) { |
| 562 | err = -EINVAL; |
| 563 | goto end1; |
| 564 | } |
| 565 | |
Al Viro | 7e7742e | 2010-01-31 17:09:29 -0500 | [diff] [blame] | 566 | if (!(dep = map_dirent(old_dir, hpfs_i(old_dir)->i_dno, old_name, old_len, &dno, &qbh))) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 567 | hpfs_error(i->i_sb, "lookup succeeded but map dirent failed"); |
| 568 | err = -ENOENT; |
| 569 | goto end1; |
| 570 | } |
| 571 | copy_de(&de, dep); |
| 572 | de.hidden = new_name[0] == '.'; |
| 573 | |
| 574 | if (new_inode) { |
| 575 | int r; |
| 576 | if ((r = hpfs_remove_dirent(old_dir, dno, dep, &qbh, 1)) != 2) { |
Al Viro | 7e7742e | 2010-01-31 17:09:29 -0500 | [diff] [blame] | 577 | if ((nde = map_dirent(new_dir, hpfs_i(new_dir)->i_dno, new_name, new_len, NULL, &qbh1))) { |
Dave Hansen | ce71ec3 | 2006-09-30 23:29:06 -0700 | [diff] [blame] | 578 | clear_nlink(new_inode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 579 | copy_de(nde, &de); |
| 580 | memcpy(nde->name, new_name, new_len); |
| 581 | hpfs_mark_4buffers_dirty(&qbh1); |
| 582 | hpfs_brelse4(&qbh1); |
| 583 | goto end; |
| 584 | } |
| 585 | hpfs_error(new_dir->i_sb, "hpfs_rename: could not find dirent"); |
| 586 | err = -EFSERROR; |
| 587 | goto end1; |
| 588 | } |
| 589 | err = r == 2 ? -ENOSPC : r == 1 ? -EFSERROR : 0; |
| 590 | goto end1; |
| 591 | } |
| 592 | |
| 593 | if (new_dir == old_dir) hpfs_brelse4(&qbh); |
| 594 | |
Mikulas Patocka | 7d23ce3 | 2011-05-08 20:43:06 +0200 | [diff] [blame] | 595 | if ((r = hpfs_add_dirent(new_dir, new_name, new_len, &de))) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 596 | if (r == -1) hpfs_error(new_dir->i_sb, "hpfs_rename: dirent already exists!"); |
| 597 | err = r == 1 ? -ENOSPC : -EFSERROR; |
| 598 | if (new_dir != old_dir) hpfs_brelse4(&qbh); |
| 599 | goto end1; |
| 600 | } |
| 601 | |
| 602 | if (new_dir == old_dir) |
Al Viro | 7e7742e | 2010-01-31 17:09:29 -0500 | [diff] [blame] | 603 | if (!(dep = map_dirent(old_dir, hpfs_i(old_dir)->i_dno, old_name, old_len, &dno, &qbh))) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 604 | hpfs_error(i->i_sb, "lookup succeeded but map dirent failed at #2"); |
| 605 | err = -ENOENT; |
| 606 | goto end1; |
| 607 | } |
| 608 | |
| 609 | if ((r = hpfs_remove_dirent(old_dir, dno, dep, &qbh, 0))) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 610 | hpfs_error(i->i_sb, "hpfs_rename: could not remove dirent"); |
| 611 | err = r == 2 ? -ENOSPC : -EFSERROR; |
| 612 | goto end1; |
| 613 | } |
Mikulas Patocka | 7d23ce3 | 2011-05-08 20:43:06 +0200 | [diff] [blame] | 614 | |
Mikulas Patocka | f49a26e | 2015-09-02 22:51:53 +0200 | [diff] [blame] | 615 | end: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 616 | hpfs_i(i)->i_parent_dir = new_dir->i_ino; |
| 617 | if (S_ISDIR(i->i_mode)) { |
Dave Hansen | d8c76e6 | 2006-09-30 23:29:04 -0700 | [diff] [blame] | 618 | inc_nlink(new_dir); |
Dave Hansen | 9a53c3a | 2006-09-30 23:29:03 -0700 | [diff] [blame] | 619 | drop_nlink(old_dir); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 620 | } |
| 621 | if ((fnode = hpfs_map_fnode(i->i_sb, i->i_ino, &bh))) { |
Mikulas Patocka | 0b69760 | 2011-05-08 20:44:26 +0200 | [diff] [blame] | 622 | fnode->up = cpu_to_le32(new_dir->i_ino); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 623 | fnode->len = new_len; |
| 624 | memcpy(fnode->name, new_name, new_len>15?15:new_len); |
| 625 | if (new_len < 15) memset(&fnode->name[new_len], 0, 15 - new_len); |
| 626 | mark_buffer_dirty(bh); |
| 627 | brelse(bh); |
| 628 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 629 | end1: |
Mikulas Patocka | f49a26e | 2015-09-02 22:51:53 +0200 | [diff] [blame] | 630 | if (!err) { |
| 631 | hpfs_update_directory_times(old_dir); |
| 632 | hpfs_update_directory_times(new_dir); |
| 633 | } |
Arnd Bergmann | 9a311b9 | 2011-01-22 20:26:12 +0100 | [diff] [blame] | 634 | hpfs_unlock(i->i_sb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 635 | return err; |
| 636 | } |
| 637 | |
Arjan van de Ven | 92e1d5b | 2007-02-12 00:55:39 -0800 | [diff] [blame] | 638 | const struct inode_operations hpfs_dir_iops = |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 639 | { |
| 640 | .create = hpfs_create, |
| 641 | .lookup = hpfs_lookup, |
| 642 | .unlink = hpfs_unlink, |
| 643 | .symlink = hpfs_symlink, |
| 644 | .mkdir = hpfs_mkdir, |
| 645 | .rmdir = hpfs_rmdir, |
| 646 | .mknod = hpfs_mknod, |
| 647 | .rename = hpfs_rename, |
Christoph Hellwig | ca30bc9 | 2008-08-11 00:27:59 +0200 | [diff] [blame] | 648 | .setattr = hpfs_setattr, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 649 | }; |