blob: 4df5059c25da67c4b1ddd2a868057951e6e54d60 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * linux/fs/hfsplus/dir.c
3 *
4 * Copyright (C) 2001
5 * Brad Boyer (flar@allandria.com)
6 * (C) 2003 Ardis Technologies <roman@ardistech.com>
7 *
8 * Handling of directories
9 */
10
11#include <linux/errno.h>
12#include <linux/fs.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070013#include <linux/slab.h>
14#include <linux/random.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070015
16#include "hfsplus_fs.h"
17#include "hfsplus_raw.h"
18
19static inline void hfsplus_instantiate(struct dentry *dentry,
20 struct inode *inode, u32 cnid)
21{
22 dentry->d_fsdata = (void *)(unsigned long)cnid;
23 d_instantiate(dentry, inode);
24}
25
26/* Find the entry inside dir named dentry->d_name */
27static struct dentry *hfsplus_lookup(struct inode *dir, struct dentry *dentry,
28 struct nameidata *nd)
29{
30 struct inode *inode = NULL;
31 struct hfs_find_data fd;
32 struct super_block *sb;
33 hfsplus_cat_entry entry;
34 int err;
35 u32 cnid, linkid = 0;
36 u16 type;
37
38 sb = dir->i_sb;
Duane Griffind45bce82007-07-15 23:41:23 -070039
Linus Torvalds1da177e2005-04-16 15:20:36 -070040 dentry->d_fsdata = NULL;
Christoph Hellwigdd73a012010-10-01 05:42:59 +020041 hfs_find_init(HFSPLUS_SB(sb)->cat_tree, &fd);
Linus Torvalds1da177e2005-04-16 15:20:36 -070042 hfsplus_cat_build_key(sb, fd.search_key, dir->i_ino, &dentry->d_name);
43again:
44 err = hfs_brec_read(&fd, &entry, sizeof(entry));
45 if (err) {
46 if (err == -ENOENT) {
47 hfs_find_exit(&fd);
48 /* No such entry */
49 inode = NULL;
50 goto out;
51 }
52 goto fail;
53 }
54 type = be16_to_cpu(entry.type);
55 if (type == HFSPLUS_FOLDER) {
56 if (fd.entrylength < sizeof(struct hfsplus_cat_folder)) {
57 err = -EIO;
58 goto fail;
59 }
60 cnid = be32_to_cpu(entry.folder.id);
61 dentry->d_fsdata = (void *)(unsigned long)cnid;
62 } else if (type == HFSPLUS_FILE) {
63 if (fd.entrylength < sizeof(struct hfsplus_cat_file)) {
64 err = -EIO;
65 goto fail;
66 }
67 cnid = be32_to_cpu(entry.file.id);
Anton Salikhmetov2753cc22010-12-16 18:08:38 +020068 if (entry.file.user_info.fdType ==
69 cpu_to_be32(HFSP_HARDLINK_TYPE) &&
70 entry.file.user_info.fdCreator ==
71 cpu_to_be32(HFSP_HFSPLUS_CREATOR) &&
72 (entry.file.create_date ==
73 HFSPLUS_I(HFSPLUS_SB(sb)->hidden_dir)->
74 create_date ||
75 entry.file.create_date ==
76 HFSPLUS_I(sb->s_root->d_inode)->
77 create_date) &&
78 HFSPLUS_SB(sb)->hidden_dir) {
Linus Torvalds1da177e2005-04-16 15:20:36 -070079 struct qstr str;
80 char name[32];
81
82 if (dentry->d_fsdata) {
Roman Zippelaf8c85b2006-01-18 17:43:10 -080083 /*
84 * We found a link pointing to another link,
85 * so ignore it and treat it as regular file.
86 */
87 cnid = (unsigned long)dentry->d_fsdata;
88 linkid = 0;
89 } else {
90 dentry->d_fsdata = (void *)(unsigned long)cnid;
Anton Salikhmetov2753cc22010-12-16 18:08:38 +020091 linkid =
92 be32_to_cpu(entry.file.permissions.dev);
Roman Zippelaf8c85b2006-01-18 17:43:10 -080093 str.len = sprintf(name, "iNode%d", linkid);
94 str.name = name;
Christoph Hellwigdd73a012010-10-01 05:42:59 +020095 hfsplus_cat_build_key(sb, fd.search_key,
Anton Salikhmetov2753cc22010-12-16 18:08:38 +020096 HFSPLUS_SB(sb)->hidden_dir->i_ino,
97 &str);
Roman Zippelaf8c85b2006-01-18 17:43:10 -080098 goto again;
Linus Torvalds1da177e2005-04-16 15:20:36 -070099 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700100 } else if (!dentry->d_fsdata)
101 dentry->d_fsdata = (void *)(unsigned long)cnid;
102 } else {
Roman Zippel634725a2006-01-18 17:43:05 -0800103 printk(KERN_ERR "hfs: invalid catalog entry type in lookup\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700104 err = -EIO;
105 goto fail;
106 }
107 hfs_find_exit(&fd);
David Howells63525392008-02-07 00:15:40 -0800108 inode = hfsplus_iget(dir->i_sb, cnid);
109 if (IS_ERR(inode))
110 return ERR_CAST(inode);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700111 if (S_ISREG(inode->i_mode))
Christoph Hellwigf6089ff2010-10-14 09:54:28 -0400112 HFSPLUS_I(inode)->linkid = linkid;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700113out:
114 d_add(dentry, inode);
115 return NULL;
116fail:
117 hfs_find_exit(&fd);
118 return ERR_PTR(err);
119}
120
121static int hfsplus_readdir(struct file *filp, void *dirent, filldir_t filldir)
122{
Josef Sipekf44ea032006-12-08 02:37:04 -0800123 struct inode *inode = filp->f_path.dentry->d_inode;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700124 struct super_block *sb = inode->i_sb;
125 int len, err;
126 char strbuf[HFSPLUS_MAX_STRLEN + 1];
127 hfsplus_cat_entry entry;
128 struct hfs_find_data fd;
129 struct hfsplus_readdir_data *rd;
130 u16 type;
131
132 if (filp->f_pos >= inode->i_size)
133 return 0;
134
Christoph Hellwigdd73a012010-10-01 05:42:59 +0200135 hfs_find_init(HFSPLUS_SB(sb)->cat_tree, &fd);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700136 hfsplus_cat_build_key(sb, fd.search_key, inode->i_ino, NULL);
137 err = hfs_brec_find(&fd);
138 if (err)
139 goto out;
140
141 switch ((u32)filp->f_pos) {
142 case 0:
143 /* This is completely artificial... */
144 if (filldir(dirent, ".", 1, 0, inode->i_ino, DT_DIR))
145 goto out;
146 filp->f_pos++;
147 /* fall through */
148 case 1:
Anton Salikhmetov2753cc22010-12-16 18:08:38 +0200149 hfs_bnode_read(fd.bnode, &entry, fd.entryoffset,
150 fd.entrylength);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700151 if (be16_to_cpu(entry.type) != HFSPLUS_FOLDER_THREAD) {
Roman Zippel634725a2006-01-18 17:43:05 -0800152 printk(KERN_ERR "hfs: bad catalog folder thread\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700153 err = -EIO;
154 goto out;
155 }
156 if (fd.entrylength < HFSPLUS_MIN_THREAD_SZ) {
Roman Zippel634725a2006-01-18 17:43:05 -0800157 printk(KERN_ERR "hfs: truncated catalog thread\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700158 err = -EIO;
159 goto out;
160 }
161 if (filldir(dirent, "..", 2, 1,
162 be32_to_cpu(entry.thread.parentID), DT_DIR))
163 goto out;
164 filp->f_pos++;
165 /* fall through */
166 default:
167 if (filp->f_pos >= inode->i_size)
168 goto out;
169 err = hfs_brec_goto(&fd, filp->f_pos - 1);
170 if (err)
171 goto out;
172 }
173
174 for (;;) {
175 if (be32_to_cpu(fd.key->cat.parent) != inode->i_ino) {
Roman Zippel634725a2006-01-18 17:43:05 -0800176 printk(KERN_ERR "hfs: walked past end of dir\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700177 err = -EIO;
178 goto out;
179 }
Anton Salikhmetov2753cc22010-12-16 18:08:38 +0200180 hfs_bnode_read(fd.bnode, &entry, fd.entryoffset,
181 fd.entrylength);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700182 type = be16_to_cpu(entry.type);
183 len = HFSPLUS_MAX_STRLEN;
184 err = hfsplus_uni2asc(sb, &fd.key->cat.name, strbuf, &len);
185 if (err)
186 goto out;
187 if (type == HFSPLUS_FOLDER) {
Anton Salikhmetov2753cc22010-12-16 18:08:38 +0200188 if (fd.entrylength <
189 sizeof(struct hfsplus_cat_folder)) {
Roman Zippel634725a2006-01-18 17:43:05 -0800190 printk(KERN_ERR "hfs: small dir entry\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700191 err = -EIO;
192 goto out;
193 }
Christoph Hellwigdd73a012010-10-01 05:42:59 +0200194 if (HFSPLUS_SB(sb)->hidden_dir &&
195 HFSPLUS_SB(sb)->hidden_dir->i_ino ==
196 be32_to_cpu(entry.folder.id))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700197 goto next;
198 if (filldir(dirent, strbuf, len, filp->f_pos,
199 be32_to_cpu(entry.folder.id), DT_DIR))
200 break;
201 } else if (type == HFSPLUS_FILE) {
202 if (fd.entrylength < sizeof(struct hfsplus_cat_file)) {
Roman Zippel634725a2006-01-18 17:43:05 -0800203 printk(KERN_ERR "hfs: small file entry\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700204 err = -EIO;
205 goto out;
206 }
207 if (filldir(dirent, strbuf, len, filp->f_pos,
208 be32_to_cpu(entry.file.id), DT_REG))
209 break;
210 } else {
Roman Zippel634725a2006-01-18 17:43:05 -0800211 printk(KERN_ERR "hfs: bad catalog entry type\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700212 err = -EIO;
213 goto out;
214 }
Anton Salikhmetov20b76432010-12-16 18:08:40 +0200215next:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700216 filp->f_pos++;
217 if (filp->f_pos >= inode->i_size)
218 goto out;
219 err = hfs_brec_goto(&fd, 1);
220 if (err)
221 goto out;
222 }
223 rd = filp->private_data;
224 if (!rd) {
225 rd = kmalloc(sizeof(struct hfsplus_readdir_data), GFP_KERNEL);
226 if (!rd) {
227 err = -ENOMEM;
228 goto out;
229 }
230 filp->private_data = rd;
231 rd->file = filp;
Christoph Hellwig6af502d2010-10-01 05:43:31 +0200232 list_add(&rd->list, &HFSPLUS_I(inode)->open_dir_list);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700233 }
234 memcpy(&rd->key, fd.key, sizeof(struct hfsplus_cat_key));
235out:
236 hfs_find_exit(&fd);
237 return err;
238}
239
240static int hfsplus_dir_release(struct inode *inode, struct file *file)
241{
242 struct hfsplus_readdir_data *rd = file->private_data;
243 if (rd) {
Christoph Hellwig89755dc2010-10-01 05:45:25 +0200244 mutex_lock(&inode->i_mutex);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700245 list_del(&rd->list);
Christoph Hellwig89755dc2010-10-01 05:45:25 +0200246 mutex_unlock(&inode->i_mutex);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700247 kfree(rd);
248 }
249 return 0;
250}
251
Linus Torvalds1da177e2005-04-16 15:20:36 -0700252static int hfsplus_link(struct dentry *src_dentry, struct inode *dst_dir,
253 struct dentry *dst_dentry)
254{
Christoph Hellwigdd73a012010-10-01 05:42:59 +0200255 struct hfsplus_sb_info *sbi = HFSPLUS_SB(dst_dir->i_sb);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700256 struct inode *inode = src_dentry->d_inode;
257 struct inode *src_dir = src_dentry->d_parent->d_inode;
258 struct qstr str;
259 char name[32];
260 u32 cnid, id;
261 int res;
262
263 if (HFSPLUS_IS_RSRC(inode))
264 return -EPERM;
Christoph Hellwigf6089ff2010-10-14 09:54:28 -0400265 if (!S_ISREG(inode->i_mode))
266 return -EPERM;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700267
Christoph Hellwig7ac9fb92010-10-01 05:45:08 +0200268 mutex_lock(&sbi->vh_mutex);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700269 if (inode->i_ino == (u32)(unsigned long)src_dentry->d_fsdata) {
270 for (;;) {
271 get_random_bytes(&id, sizeof(cnid));
272 id &= 0x3fffffff;
273 str.name = name;
274 str.len = sprintf(name, "iNode%d", id);
275 res = hfsplus_rename_cat(inode->i_ino,
276 src_dir, &src_dentry->d_name,
Christoph Hellwigdd73a012010-10-01 05:42:59 +0200277 sbi->hidden_dir, &str);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700278 if (!res)
279 break;
280 if (res != -EEXIST)
Christoph Hellwig7ac9fb92010-10-01 05:45:08 +0200281 goto out;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700282 }
Christoph Hellwigf6089ff2010-10-14 09:54:28 -0400283 HFSPLUS_I(inode)->linkid = id;
Christoph Hellwigdd73a012010-10-01 05:42:59 +0200284 cnid = sbi->next_cnid++;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700285 src_dentry->d_fsdata = (void *)(unsigned long)cnid;
Anton Salikhmetov2753cc22010-12-16 18:08:38 +0200286 res = hfsplus_create_cat(cnid, src_dir,
287 &src_dentry->d_name, inode);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700288 if (res)
289 /* panic? */
Christoph Hellwig7ac9fb92010-10-01 05:45:08 +0200290 goto out;
Christoph Hellwigdd73a012010-10-01 05:42:59 +0200291 sbi->file_count++;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700292 }
Christoph Hellwigdd73a012010-10-01 05:42:59 +0200293 cnid = sbi->next_cnid++;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700294 res = hfsplus_create_cat(cnid, dst_dir, &dst_dentry->d_name, inode);
295 if (res)
Christoph Hellwig7ac9fb92010-10-01 05:45:08 +0200296 goto out;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700297
Dave Hansend8c76e62006-09-30 23:29:04 -0700298 inc_nlink(inode);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700299 hfsplus_instantiate(dst_dentry, inode, cnid);
Al Viro7de9c6e2010-10-23 11:11:40 -0400300 ihold(inode);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700301 inode->i_ctime = CURRENT_TIME_SEC;
302 mark_inode_dirty(inode);
Christoph Hellwigdd73a012010-10-01 05:42:59 +0200303 sbi->file_count++;
304 dst_dir->i_sb->s_dirt = 1;
Christoph Hellwig7ac9fb92010-10-01 05:45:08 +0200305out:
306 mutex_unlock(&sbi->vh_mutex);
307 return res;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700308}
309
310static int hfsplus_unlink(struct inode *dir, struct dentry *dentry)
311{
Christoph Hellwigdd73a012010-10-01 05:42:59 +0200312 struct hfsplus_sb_info *sbi = HFSPLUS_SB(dir->i_sb);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700313 struct inode *inode = dentry->d_inode;
314 struct qstr str;
315 char name[32];
316 u32 cnid;
317 int res;
318
319 if (HFSPLUS_IS_RSRC(inode))
320 return -EPERM;
321
Christoph Hellwig7ac9fb92010-10-01 05:45:08 +0200322 mutex_lock(&sbi->vh_mutex);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700323 cnid = (u32)(unsigned long)dentry->d_fsdata;
324 if (inode->i_ino == cnid &&
Christoph Hellwig6af502d2010-10-01 05:43:31 +0200325 atomic_read(&HFSPLUS_I(inode)->opencnt)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700326 str.name = name;
327 str.len = sprintf(name, "temp%lu", inode->i_ino);
328 res = hfsplus_rename_cat(inode->i_ino,
329 dir, &dentry->d_name,
Christoph Hellwigdd73a012010-10-01 05:42:59 +0200330 sbi->hidden_dir, &str);
Christoph Hellwig85b8fe82010-10-27 13:45:50 +0200331 if (!res) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700332 inode->i_flags |= S_DEAD;
Christoph Hellwig85b8fe82010-10-27 13:45:50 +0200333 drop_nlink(inode);
334 }
Christoph Hellwig7ac9fb92010-10-01 05:45:08 +0200335 goto out;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700336 }
337 res = hfsplus_delete_cat(cnid, dir, &dentry->d_name);
338 if (res)
Christoph Hellwig7ac9fb92010-10-01 05:45:08 +0200339 goto out;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700340
Roman Zippelaf8c85b2006-01-18 17:43:10 -0800341 if (inode->i_nlink > 0)
Dave Hansen9a53c3a2006-09-30 23:29:03 -0700342 drop_nlink(inode);
Roman Zippel76b0c262008-04-09 17:44:07 +0200343 if (inode->i_ino == cnid)
Dave Hansence71ec32006-09-30 23:29:06 -0700344 clear_nlink(inode);
Roman Zippel76b0c262008-04-09 17:44:07 +0200345 if (!inode->i_nlink) {
346 if (inode->i_ino != cnid) {
Christoph Hellwigdd73a012010-10-01 05:42:59 +0200347 sbi->file_count--;
Christoph Hellwig6af502d2010-10-01 05:43:31 +0200348 if (!atomic_read(&HFSPLUS_I(inode)->opencnt)) {
Roman Zippel76b0c262008-04-09 17:44:07 +0200349 res = hfsplus_delete_cat(inode->i_ino,
Christoph Hellwigdd73a012010-10-01 05:42:59 +0200350 sbi->hidden_dir,
Roman Zippel76b0c262008-04-09 17:44:07 +0200351 NULL);
352 if (!res)
353 hfsplus_delete_inode(inode);
354 } else
355 inode->i_flags |= S_DEAD;
356 } else
357 hfsplus_delete_inode(inode);
358 } else
Christoph Hellwigdd73a012010-10-01 05:42:59 +0200359 sbi->file_count--;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700360 inode->i_ctime = CURRENT_TIME_SEC;
361 mark_inode_dirty(inode);
Christoph Hellwig7ac9fb92010-10-01 05:45:08 +0200362out:
363 mutex_unlock(&sbi->vh_mutex);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700364 return res;
365}
366
Linus Torvalds1da177e2005-04-16 15:20:36 -0700367static int hfsplus_rmdir(struct inode *dir, struct dentry *dentry)
368{
Christoph Hellwig7ac9fb92010-10-01 05:45:08 +0200369 struct hfsplus_sb_info *sbi = HFSPLUS_SB(dir->i_sb);
370 struct inode *inode = dentry->d_inode;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700371 int res;
372
Linus Torvalds1da177e2005-04-16 15:20:36 -0700373 if (inode->i_size != 2)
374 return -ENOTEMPTY;
Christoph Hellwig7ac9fb92010-10-01 05:45:08 +0200375
376 mutex_lock(&sbi->vh_mutex);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700377 res = hfsplus_delete_cat(inode->i_ino, dir, &dentry->d_name);
378 if (res)
Christoph Hellwig7ac9fb92010-10-01 05:45:08 +0200379 goto out;
Dave Hansence71ec32006-09-30 23:29:06 -0700380 clear_nlink(inode);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700381 inode->i_ctime = CURRENT_TIME_SEC;
382 hfsplus_delete_inode(inode);
383 mark_inode_dirty(inode);
Christoph Hellwig7ac9fb92010-10-01 05:45:08 +0200384out:
385 mutex_unlock(&sbi->vh_mutex);
386 return res;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700387}
388
389static int hfsplus_symlink(struct inode *dir, struct dentry *dentry,
390 const char *symname)
391{
Christoph Hellwig7ac9fb92010-10-01 05:45:08 +0200392 struct hfsplus_sb_info *sbi = HFSPLUS_SB(dir->i_sb);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700393 struct inode *inode;
Christoph Hellwig7ac9fb92010-10-01 05:45:08 +0200394 int res = -ENOSPC;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700395
Christoph Hellwig7ac9fb92010-10-01 05:45:08 +0200396 mutex_lock(&sbi->vh_mutex);
Christoph Hellwigf17c89b2010-10-01 05:43:54 +0200397 inode = hfsplus_new_inode(dir->i_sb, S_IFLNK | S_IRWXUGO);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700398 if (!inode)
Christoph Hellwig7ac9fb92010-10-01 05:45:08 +0200399 goto out;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700400
401 res = page_symlink(inode, symname, strlen(symname) + 1);
Christoph Hellwigf17c89b2010-10-01 05:43:54 +0200402 if (res)
403 goto out_err;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700404
Linus Torvalds1da177e2005-04-16 15:20:36 -0700405 res = hfsplus_create_cat(inode->i_ino, dir, &dentry->d_name, inode);
Christoph Hellwigf17c89b2010-10-01 05:43:54 +0200406 if (res)
407 goto out_err;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700408
Christoph Hellwigf17c89b2010-10-01 05:43:54 +0200409 hfsplus_instantiate(dentry, inode, inode->i_ino);
410 mark_inode_dirty(inode);
Christoph Hellwig7ac9fb92010-10-01 05:45:08 +0200411 goto out;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700412
Christoph Hellwigf17c89b2010-10-01 05:43:54 +0200413out_err:
414 inode->i_nlink = 0;
415 hfsplus_delete_inode(inode);
416 iput(inode);
Christoph Hellwig7ac9fb92010-10-01 05:45:08 +0200417out:
418 mutex_unlock(&sbi->vh_mutex);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700419 return res;
420}
421
422static int hfsplus_mknod(struct inode *dir, struct dentry *dentry,
423 int mode, dev_t rdev)
424{
Christoph Hellwig7ac9fb92010-10-01 05:45:08 +0200425 struct hfsplus_sb_info *sbi = HFSPLUS_SB(dir->i_sb);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700426 struct inode *inode;
Christoph Hellwig7ac9fb92010-10-01 05:45:08 +0200427 int res = -ENOSPC;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700428
Christoph Hellwig7ac9fb92010-10-01 05:45:08 +0200429 mutex_lock(&sbi->vh_mutex);
Christoph Hellwig30d3abb2010-10-01 05:43:50 +0200430 inode = hfsplus_new_inode(dir->i_sb, mode);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700431 if (!inode)
Christoph Hellwig7ac9fb92010-10-01 05:45:08 +0200432 goto out;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700433
Christoph Hellwig90e61692010-10-14 09:54:39 -0400434 if (S_ISBLK(mode) || S_ISCHR(mode) || S_ISFIFO(mode) || S_ISSOCK(mode))
435 init_special_inode(inode, mode, rdev);
436
Linus Torvalds1da177e2005-04-16 15:20:36 -0700437 res = hfsplus_create_cat(inode->i_ino, dir, &dentry->d_name, inode);
438 if (res) {
439 inode->i_nlink = 0;
440 hfsplus_delete_inode(inode);
441 iput(inode);
Christoph Hellwig7ac9fb92010-10-01 05:45:08 +0200442 goto out;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700443 }
Christoph Hellwig30d3abb2010-10-01 05:43:50 +0200444
Linus Torvalds1da177e2005-04-16 15:20:36 -0700445 hfsplus_instantiate(dentry, inode, inode->i_ino);
446 mark_inode_dirty(inode);
Christoph Hellwig7ac9fb92010-10-01 05:45:08 +0200447out:
448 mutex_unlock(&sbi->vh_mutex);
449 return res;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700450}
451
Christoph Hellwig30d3abb2010-10-01 05:43:50 +0200452static int hfsplus_create(struct inode *dir, struct dentry *dentry, int mode,
453 struct nameidata *nd)
454{
455 return hfsplus_mknod(dir, dentry, mode, 0);
456}
457
458static int hfsplus_mkdir(struct inode *dir, struct dentry *dentry, int mode)
459{
460 return hfsplus_mknod(dir, dentry, mode | S_IFDIR, 0);
461}
462
Linus Torvalds1da177e2005-04-16 15:20:36 -0700463static int hfsplus_rename(struct inode *old_dir, struct dentry *old_dentry,
464 struct inode *new_dir, struct dentry *new_dentry)
465{
466 int res;
467
468 /* Unlink destination if it already exists */
469 if (new_dentry->d_inode) {
Christoph Hellwig40de9a72010-10-01 09:12:08 +0200470 if (S_ISDIR(new_dentry->d_inode->i_mode))
471 res = hfsplus_rmdir(new_dir, new_dentry);
472 else
473 res = hfsplus_unlink(new_dir, new_dentry);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700474 if (res)
475 return res;
476 }
477
478 res = hfsplus_rename_cat((u32)(unsigned long)old_dentry->d_fsdata,
479 old_dir, &old_dentry->d_name,
480 new_dir, &new_dentry->d_name);
481 if (!res)
482 new_dentry->d_fsdata = old_dentry->d_fsdata;
483 return res;
484}
485
Arjan van de Ven92e1d5b2007-02-12 00:55:39 -0800486const struct inode_operations hfsplus_dir_inode_operations = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700487 .lookup = hfsplus_lookup,
488 .create = hfsplus_create,
489 .link = hfsplus_link,
490 .unlink = hfsplus_unlink,
491 .mkdir = hfsplus_mkdir,
492 .rmdir = hfsplus_rmdir,
493 .symlink = hfsplus_symlink,
494 .mknod = hfsplus_mknod,
495 .rename = hfsplus_rename,
496};
497
Arjan van de Ven4b6f5d22006-03-28 01:56:42 -0800498const struct file_operations hfsplus_dir_operations = {
Christoph Hellwigeb29d662010-11-23 14:38:10 +0100499 .fsync = hfsplus_file_fsync,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700500 .read = generic_read_dir,
501 .readdir = hfsplus_readdir,
Arnd Bergmann7cc4bcc2010-04-27 16:24:20 +0200502 .unlocked_ioctl = hfsplus_ioctl,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700503 .llseek = generic_file_llseek,
504 .release = hfsplus_dir_release,
505};