| 1 |
62 |
marcus.erl |
/*
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| 2 |
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* linux/fs/hfsplus/dir.c
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| 3 |
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*
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| 4 |
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* Copyright (C) 2001
|
| 5 |
|
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* Brad Boyer (flar@allandria.com)
|
| 6 |
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* (C) 2003 Ardis Technologies <roman@ardistech.com>
|
| 7 |
|
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*
|
| 8 |
|
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* Handling of directories
|
| 9 |
|
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*/
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| 10 |
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| 11 |
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#include <linux/errno.h>
|
| 12 |
|
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#include <linux/fs.h>
|
| 13 |
|
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#include <linux/slab.h>
|
| 14 |
|
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#include <linux/random.h>
|
| 15 |
|
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|
| 16 |
|
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#include "hfsplus_fs.h"
|
| 17 |
|
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#include "hfsplus_raw.h"
|
| 18 |
|
|
|
| 19 |
|
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static inline void hfsplus_instantiate(struct dentry *dentry,
|
| 20 |
|
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struct inode *inode, u32 cnid)
|
| 21 |
|
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{
|
| 22 |
|
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dentry->d_fsdata = (void *)(unsigned long)cnid;
|
| 23 |
|
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d_instantiate(dentry, inode);
|
| 24 |
|
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}
|
| 25 |
|
|
|
| 26 |
|
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/* Find the entry inside dir named dentry->d_name */
|
| 27 |
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static struct dentry *hfsplus_lookup(struct inode *dir, struct dentry *dentry,
|
| 28 |
|
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struct nameidata *nd)
|
| 29 |
|
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{
|
| 30 |
|
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struct inode *inode = NULL;
|
| 31 |
|
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struct hfs_find_data fd;
|
| 32 |
|
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struct super_block *sb;
|
| 33 |
|
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hfsplus_cat_entry entry;
|
| 34 |
|
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int err;
|
| 35 |
|
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u32 cnid, linkid = 0;
|
| 36 |
|
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u16 type;
|
| 37 |
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|
|
| 38 |
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sb = dir->i_sb;
|
| 39 |
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|
|
| 40 |
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dentry->d_op = &hfsplus_dentry_operations;
|
| 41 |
|
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dentry->d_fsdata = NULL;
|
| 42 |
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hfs_find_init(HFSPLUS_SB(sb).cat_tree, &fd);
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| 43 |
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hfsplus_cat_build_key(sb, fd.search_key, dir->i_ino, &dentry->d_name);
|
| 44 |
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again:
|
| 45 |
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err = hfs_brec_read(&fd, &entry, sizeof(entry));
|
| 46 |
|
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if (err) {
|
| 47 |
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if (err == -ENOENT) {
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| 48 |
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hfs_find_exit(&fd);
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| 49 |
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/* No such entry */
|
| 50 |
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inode = NULL;
|
| 51 |
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goto out;
|
| 52 |
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}
|
| 53 |
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goto fail;
|
| 54 |
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}
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| 55 |
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type = be16_to_cpu(entry.type);
|
| 56 |
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if (type == HFSPLUS_FOLDER) {
|
| 57 |
|
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if (fd.entrylength < sizeof(struct hfsplus_cat_folder)) {
|
| 58 |
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err = -EIO;
|
| 59 |
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goto fail;
|
| 60 |
|
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}
|
| 61 |
|
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cnid = be32_to_cpu(entry.folder.id);
|
| 62 |
|
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dentry->d_fsdata = (void *)(unsigned long)cnid;
|
| 63 |
|
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} else if (type == HFSPLUS_FILE) {
|
| 64 |
|
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if (fd.entrylength < sizeof(struct hfsplus_cat_file)) {
|
| 65 |
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err = -EIO;
|
| 66 |
|
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goto fail;
|
| 67 |
|
|
}
|
| 68 |
|
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cnid = be32_to_cpu(entry.file.id);
|
| 69 |
|
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if (entry.file.user_info.fdType == cpu_to_be32(HFSP_HARDLINK_TYPE) &&
|
| 70 |
|
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entry.file.user_info.fdCreator == cpu_to_be32(HFSP_HFSPLUS_CREATOR) &&
|
| 71 |
|
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(entry.file.create_date == HFSPLUS_I(HFSPLUS_SB(sb).hidden_dir).create_date ||
|
| 72 |
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entry.file.create_date == HFSPLUS_I(sb->s_root->d_inode).create_date) &&
|
| 73 |
|
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HFSPLUS_SB(sb).hidden_dir) {
|
| 74 |
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struct qstr str;
|
| 75 |
|
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char name[32];
|
| 76 |
|
|
|
| 77 |
|
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if (dentry->d_fsdata) {
|
| 78 |
|
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/*
|
| 79 |
|
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* We found a link pointing to another link,
|
| 80 |
|
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* so ignore it and treat it as regular file.
|
| 81 |
|
|
*/
|
| 82 |
|
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cnid = (unsigned long)dentry->d_fsdata;
|
| 83 |
|
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linkid = 0;
|
| 84 |
|
|
} else {
|
| 85 |
|
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dentry->d_fsdata = (void *)(unsigned long)cnid;
|
| 86 |
|
|
linkid = be32_to_cpu(entry.file.permissions.dev);
|
| 87 |
|
|
str.len = sprintf(name, "iNode%d", linkid);
|
| 88 |
|
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str.name = name;
|
| 89 |
|
|
hfsplus_cat_build_key(sb, fd.search_key, HFSPLUS_SB(sb).hidden_dir->i_ino, &str);
|
| 90 |
|
|
goto again;
|
| 91 |
|
|
}
|
| 92 |
|
|
} else if (!dentry->d_fsdata)
|
| 93 |
|
|
dentry->d_fsdata = (void *)(unsigned long)cnid;
|
| 94 |
|
|
} else {
|
| 95 |
|
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printk(KERN_ERR "hfs: invalid catalog entry type in lookup\n");
|
| 96 |
|
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err = -EIO;
|
| 97 |
|
|
goto fail;
|
| 98 |
|
|
}
|
| 99 |
|
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hfs_find_exit(&fd);
|
| 100 |
|
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inode = iget(dir->i_sb, cnid);
|
| 101 |
|
|
if (!inode)
|
| 102 |
|
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return ERR_PTR(-EACCES);
|
| 103 |
|
|
if (S_ISREG(inode->i_mode))
|
| 104 |
|
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HFSPLUS_I(inode).dev = linkid;
|
| 105 |
|
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out:
|
| 106 |
|
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d_add(dentry, inode);
|
| 107 |
|
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return NULL;
|
| 108 |
|
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fail:
|
| 109 |
|
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hfs_find_exit(&fd);
|
| 110 |
|
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return ERR_PTR(err);
|
| 111 |
|
|
}
|
| 112 |
|
|
|
| 113 |
|
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static int hfsplus_readdir(struct file *filp, void *dirent, filldir_t filldir)
|
| 114 |
|
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{
|
| 115 |
|
|
struct inode *inode = filp->f_path.dentry->d_inode;
|
| 116 |
|
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struct super_block *sb = inode->i_sb;
|
| 117 |
|
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int len, err;
|
| 118 |
|
|
char strbuf[HFSPLUS_MAX_STRLEN + 1];
|
| 119 |
|
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hfsplus_cat_entry entry;
|
| 120 |
|
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struct hfs_find_data fd;
|
| 121 |
|
|
struct hfsplus_readdir_data *rd;
|
| 122 |
|
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u16 type;
|
| 123 |
|
|
|
| 124 |
|
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if (filp->f_pos >= inode->i_size)
|
| 125 |
|
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return 0;
|
| 126 |
|
|
|
| 127 |
|
|
hfs_find_init(HFSPLUS_SB(sb).cat_tree, &fd);
|
| 128 |
|
|
hfsplus_cat_build_key(sb, fd.search_key, inode->i_ino, NULL);
|
| 129 |
|
|
err = hfs_brec_find(&fd);
|
| 130 |
|
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if (err)
|
| 131 |
|
|
goto out;
|
| 132 |
|
|
|
| 133 |
|
|
switch ((u32)filp->f_pos) {
|
| 134 |
|
|
case 0:
|
| 135 |
|
|
/* This is completely artificial... */
|
| 136 |
|
|
if (filldir(dirent, ".", 1, 0, inode->i_ino, DT_DIR))
|
| 137 |
|
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goto out;
|
| 138 |
|
|
filp->f_pos++;
|
| 139 |
|
|
/* fall through */
|
| 140 |
|
|
case 1:
|
| 141 |
|
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hfs_bnode_read(fd.bnode, &entry, fd.entryoffset, fd.entrylength);
|
| 142 |
|
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if (be16_to_cpu(entry.type) != HFSPLUS_FOLDER_THREAD) {
|
| 143 |
|
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printk(KERN_ERR "hfs: bad catalog folder thread\n");
|
| 144 |
|
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err = -EIO;
|
| 145 |
|
|
goto out;
|
| 146 |
|
|
}
|
| 147 |
|
|
if (fd.entrylength < HFSPLUS_MIN_THREAD_SZ) {
|
| 148 |
|
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printk(KERN_ERR "hfs: truncated catalog thread\n");
|
| 149 |
|
|
err = -EIO;
|
| 150 |
|
|
goto out;
|
| 151 |
|
|
}
|
| 152 |
|
|
if (filldir(dirent, "..", 2, 1,
|
| 153 |
|
|
be32_to_cpu(entry.thread.parentID), DT_DIR))
|
| 154 |
|
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goto out;
|
| 155 |
|
|
filp->f_pos++;
|
| 156 |
|
|
/* fall through */
|
| 157 |
|
|
default:
|
| 158 |
|
|
if (filp->f_pos >= inode->i_size)
|
| 159 |
|
|
goto out;
|
| 160 |
|
|
err = hfs_brec_goto(&fd, filp->f_pos - 1);
|
| 161 |
|
|
if (err)
|
| 162 |
|
|
goto out;
|
| 163 |
|
|
}
|
| 164 |
|
|
|
| 165 |
|
|
for (;;) {
|
| 166 |
|
|
if (be32_to_cpu(fd.key->cat.parent) != inode->i_ino) {
|
| 167 |
|
|
printk(KERN_ERR "hfs: walked past end of dir\n");
|
| 168 |
|
|
err = -EIO;
|
| 169 |
|
|
goto out;
|
| 170 |
|
|
}
|
| 171 |
|
|
hfs_bnode_read(fd.bnode, &entry, fd.entryoffset, fd.entrylength);
|
| 172 |
|
|
type = be16_to_cpu(entry.type);
|
| 173 |
|
|
len = HFSPLUS_MAX_STRLEN;
|
| 174 |
|
|
err = hfsplus_uni2asc(sb, &fd.key->cat.name, strbuf, &len);
|
| 175 |
|
|
if (err)
|
| 176 |
|
|
goto out;
|
| 177 |
|
|
if (type == HFSPLUS_FOLDER) {
|
| 178 |
|
|
if (fd.entrylength < sizeof(struct hfsplus_cat_folder)) {
|
| 179 |
|
|
printk(KERN_ERR "hfs: small dir entry\n");
|
| 180 |
|
|
err = -EIO;
|
| 181 |
|
|
goto out;
|
| 182 |
|
|
}
|
| 183 |
|
|
if (HFSPLUS_SB(sb).hidden_dir &&
|
| 184 |
|
|
HFSPLUS_SB(sb).hidden_dir->i_ino == be32_to_cpu(entry.folder.id))
|
| 185 |
|
|
goto next;
|
| 186 |
|
|
if (filldir(dirent, strbuf, len, filp->f_pos,
|
| 187 |
|
|
be32_to_cpu(entry.folder.id), DT_DIR))
|
| 188 |
|
|
break;
|
| 189 |
|
|
} else if (type == HFSPLUS_FILE) {
|
| 190 |
|
|
if (fd.entrylength < sizeof(struct hfsplus_cat_file)) {
|
| 191 |
|
|
printk(KERN_ERR "hfs: small file entry\n");
|
| 192 |
|
|
err = -EIO;
|
| 193 |
|
|
goto out;
|
| 194 |
|
|
}
|
| 195 |
|
|
if (filldir(dirent, strbuf, len, filp->f_pos,
|
| 196 |
|
|
be32_to_cpu(entry.file.id), DT_REG))
|
| 197 |
|
|
break;
|
| 198 |
|
|
} else {
|
| 199 |
|
|
printk(KERN_ERR "hfs: bad catalog entry type\n");
|
| 200 |
|
|
err = -EIO;
|
| 201 |
|
|
goto out;
|
| 202 |
|
|
}
|
| 203 |
|
|
next:
|
| 204 |
|
|
filp->f_pos++;
|
| 205 |
|
|
if (filp->f_pos >= inode->i_size)
|
| 206 |
|
|
goto out;
|
| 207 |
|
|
err = hfs_brec_goto(&fd, 1);
|
| 208 |
|
|
if (err)
|
| 209 |
|
|
goto out;
|
| 210 |
|
|
}
|
| 211 |
|
|
rd = filp->private_data;
|
| 212 |
|
|
if (!rd) {
|
| 213 |
|
|
rd = kmalloc(sizeof(struct hfsplus_readdir_data), GFP_KERNEL);
|
| 214 |
|
|
if (!rd) {
|
| 215 |
|
|
err = -ENOMEM;
|
| 216 |
|
|
goto out;
|
| 217 |
|
|
}
|
| 218 |
|
|
filp->private_data = rd;
|
| 219 |
|
|
rd->file = filp;
|
| 220 |
|
|
list_add(&rd->list, &HFSPLUS_I(inode).open_dir_list);
|
| 221 |
|
|
}
|
| 222 |
|
|
memcpy(&rd->key, fd.key, sizeof(struct hfsplus_cat_key));
|
| 223 |
|
|
out:
|
| 224 |
|
|
hfs_find_exit(&fd);
|
| 225 |
|
|
return err;
|
| 226 |
|
|
}
|
| 227 |
|
|
|
| 228 |
|
|
static int hfsplus_dir_release(struct inode *inode, struct file *file)
|
| 229 |
|
|
{
|
| 230 |
|
|
struct hfsplus_readdir_data *rd = file->private_data;
|
| 231 |
|
|
if (rd) {
|
| 232 |
|
|
list_del(&rd->list);
|
| 233 |
|
|
kfree(rd);
|
| 234 |
|
|
}
|
| 235 |
|
|
return 0;
|
| 236 |
|
|
}
|
| 237 |
|
|
|
| 238 |
|
|
static int hfsplus_create(struct inode *dir, struct dentry *dentry, int mode,
|
| 239 |
|
|
struct nameidata *nd)
|
| 240 |
|
|
{
|
| 241 |
|
|
struct inode *inode;
|
| 242 |
|
|
int res;
|
| 243 |
|
|
|
| 244 |
|
|
inode = hfsplus_new_inode(dir->i_sb, mode);
|
| 245 |
|
|
if (!inode)
|
| 246 |
|
|
return -ENOSPC;
|
| 247 |
|
|
|
| 248 |
|
|
res = hfsplus_create_cat(inode->i_ino, dir, &dentry->d_name, inode);
|
| 249 |
|
|
if (res) {
|
| 250 |
|
|
inode->i_nlink = 0;
|
| 251 |
|
|
hfsplus_delete_inode(inode);
|
| 252 |
|
|
iput(inode);
|
| 253 |
|
|
return res;
|
| 254 |
|
|
}
|
| 255 |
|
|
hfsplus_instantiate(dentry, inode, inode->i_ino);
|
| 256 |
|
|
mark_inode_dirty(inode);
|
| 257 |
|
|
return 0;
|
| 258 |
|
|
}
|
| 259 |
|
|
|
| 260 |
|
|
static int hfsplus_link(struct dentry *src_dentry, struct inode *dst_dir,
|
| 261 |
|
|
struct dentry *dst_dentry)
|
| 262 |
|
|
{
|
| 263 |
|
|
struct super_block *sb = dst_dir->i_sb;
|
| 264 |
|
|
struct inode *inode = src_dentry->d_inode;
|
| 265 |
|
|
struct inode *src_dir = src_dentry->d_parent->d_inode;
|
| 266 |
|
|
struct qstr str;
|
| 267 |
|
|
char name[32];
|
| 268 |
|
|
u32 cnid, id;
|
| 269 |
|
|
int res;
|
| 270 |
|
|
|
| 271 |
|
|
if (HFSPLUS_IS_RSRC(inode))
|
| 272 |
|
|
return -EPERM;
|
| 273 |
|
|
|
| 274 |
|
|
if (inode->i_ino == (u32)(unsigned long)src_dentry->d_fsdata) {
|
| 275 |
|
|
for (;;) {
|
| 276 |
|
|
get_random_bytes(&id, sizeof(cnid));
|
| 277 |
|
|
id &= 0x3fffffff;
|
| 278 |
|
|
str.name = name;
|
| 279 |
|
|
str.len = sprintf(name, "iNode%d", id);
|
| 280 |
|
|
res = hfsplus_rename_cat(inode->i_ino,
|
| 281 |
|
|
src_dir, &src_dentry->d_name,
|
| 282 |
|
|
HFSPLUS_SB(sb).hidden_dir, &str);
|
| 283 |
|
|
if (!res)
|
| 284 |
|
|
break;
|
| 285 |
|
|
if (res != -EEXIST)
|
| 286 |
|
|
return res;
|
| 287 |
|
|
}
|
| 288 |
|
|
HFSPLUS_I(inode).dev = id;
|
| 289 |
|
|
cnid = HFSPLUS_SB(sb).next_cnid++;
|
| 290 |
|
|
src_dentry->d_fsdata = (void *)(unsigned long)cnid;
|
| 291 |
|
|
res = hfsplus_create_cat(cnid, src_dir, &src_dentry->d_name, inode);
|
| 292 |
|
|
if (res)
|
| 293 |
|
|
/* panic? */
|
| 294 |
|
|
return res;
|
| 295 |
|
|
HFSPLUS_SB(sb).file_count++;
|
| 296 |
|
|
}
|
| 297 |
|
|
cnid = HFSPLUS_SB(sb).next_cnid++;
|
| 298 |
|
|
res = hfsplus_create_cat(cnid, dst_dir, &dst_dentry->d_name, inode);
|
| 299 |
|
|
if (res)
|
| 300 |
|
|
return res;
|
| 301 |
|
|
|
| 302 |
|
|
inc_nlink(inode);
|
| 303 |
|
|
hfsplus_instantiate(dst_dentry, inode, cnid);
|
| 304 |
|
|
atomic_inc(&inode->i_count);
|
| 305 |
|
|
inode->i_ctime = CURRENT_TIME_SEC;
|
| 306 |
|
|
mark_inode_dirty(inode);
|
| 307 |
|
|
HFSPLUS_SB(sb).file_count++;
|
| 308 |
|
|
sb->s_dirt = 1;
|
| 309 |
|
|
|
| 310 |
|
|
return 0;
|
| 311 |
|
|
}
|
| 312 |
|
|
|
| 313 |
|
|
static int hfsplus_unlink(struct inode *dir, struct dentry *dentry)
|
| 314 |
|
|
{
|
| 315 |
|
|
struct super_block *sb = dir->i_sb;
|
| 316 |
|
|
struct inode *inode = dentry->d_inode;
|
| 317 |
|
|
struct qstr str;
|
| 318 |
|
|
char name[32];
|
| 319 |
|
|
u32 cnid;
|
| 320 |
|
|
int res;
|
| 321 |
|
|
|
| 322 |
|
|
if (HFSPLUS_IS_RSRC(inode))
|
| 323 |
|
|
return -EPERM;
|
| 324 |
|
|
|
| 325 |
|
|
cnid = (u32)(unsigned long)dentry->d_fsdata;
|
| 326 |
|
|
if (inode->i_ino == cnid &&
|
| 327 |
|
|
atomic_read(&HFSPLUS_I(inode).opencnt)) {
|
| 328 |
|
|
str.name = name;
|
| 329 |
|
|
str.len = sprintf(name, "temp%lu", inode->i_ino);
|
| 330 |
|
|
res = hfsplus_rename_cat(inode->i_ino,
|
| 331 |
|
|
dir, &dentry->d_name,
|
| 332 |
|
|
HFSPLUS_SB(sb).hidden_dir, &str);
|
| 333 |
|
|
if (!res)
|
| 334 |
|
|
inode->i_flags |= S_DEAD;
|
| 335 |
|
|
return res;
|
| 336 |
|
|
}
|
| 337 |
|
|
res = hfsplus_delete_cat(cnid, dir, &dentry->d_name);
|
| 338 |
|
|
if (res)
|
| 339 |
|
|
return res;
|
| 340 |
|
|
|
| 341 |
|
|
if (inode->i_nlink > 0)
|
| 342 |
|
|
drop_nlink(inode);
|
| 343 |
|
|
hfsplus_delete_inode(inode);
|
| 344 |
|
|
if (inode->i_ino != cnid && !inode->i_nlink) {
|
| 345 |
|
|
if (!atomic_read(&HFSPLUS_I(inode).opencnt)) {
|
| 346 |
|
|
res = hfsplus_delete_cat(inode->i_ino, HFSPLUS_SB(sb).hidden_dir, NULL);
|
| 347 |
|
|
if (!res)
|
| 348 |
|
|
hfsplus_delete_inode(inode);
|
| 349 |
|
|
} else
|
| 350 |
|
|
inode->i_flags |= S_DEAD;
|
| 351 |
|
|
} else
|
| 352 |
|
|
clear_nlink(inode);
|
| 353 |
|
|
inode->i_ctime = CURRENT_TIME_SEC;
|
| 354 |
|
|
mark_inode_dirty(inode);
|
| 355 |
|
|
|
| 356 |
|
|
return res;
|
| 357 |
|
|
}
|
| 358 |
|
|
|
| 359 |
|
|
static int hfsplus_mkdir(struct inode *dir, struct dentry *dentry, int mode)
|
| 360 |
|
|
{
|
| 361 |
|
|
struct inode *inode;
|
| 362 |
|
|
int res;
|
| 363 |
|
|
|
| 364 |
|
|
inode = hfsplus_new_inode(dir->i_sb, S_IFDIR | mode);
|
| 365 |
|
|
if (!inode)
|
| 366 |
|
|
return -ENOSPC;
|
| 367 |
|
|
|
| 368 |
|
|
res = hfsplus_create_cat(inode->i_ino, dir, &dentry->d_name, inode);
|
| 369 |
|
|
if (res) {
|
| 370 |
|
|
inode->i_nlink = 0;
|
| 371 |
|
|
hfsplus_delete_inode(inode);
|
| 372 |
|
|
iput(inode);
|
| 373 |
|
|
return res;
|
| 374 |
|
|
}
|
| 375 |
|
|
hfsplus_instantiate(dentry, inode, inode->i_ino);
|
| 376 |
|
|
mark_inode_dirty(inode);
|
| 377 |
|
|
return 0;
|
| 378 |
|
|
}
|
| 379 |
|
|
|
| 380 |
|
|
static int hfsplus_rmdir(struct inode *dir, struct dentry *dentry)
|
| 381 |
|
|
{
|
| 382 |
|
|
struct inode *inode;
|
| 383 |
|
|
int res;
|
| 384 |
|
|
|
| 385 |
|
|
inode = dentry->d_inode;
|
| 386 |
|
|
if (inode->i_size != 2)
|
| 387 |
|
|
return -ENOTEMPTY;
|
| 388 |
|
|
res = hfsplus_delete_cat(inode->i_ino, dir, &dentry->d_name);
|
| 389 |
|
|
if (res)
|
| 390 |
|
|
return res;
|
| 391 |
|
|
clear_nlink(inode);
|
| 392 |
|
|
inode->i_ctime = CURRENT_TIME_SEC;
|
| 393 |
|
|
hfsplus_delete_inode(inode);
|
| 394 |
|
|
mark_inode_dirty(inode);
|
| 395 |
|
|
return 0;
|
| 396 |
|
|
}
|
| 397 |
|
|
|
| 398 |
|
|
static int hfsplus_symlink(struct inode *dir, struct dentry *dentry,
|
| 399 |
|
|
const char *symname)
|
| 400 |
|
|
{
|
| 401 |
|
|
struct super_block *sb;
|
| 402 |
|
|
struct inode *inode;
|
| 403 |
|
|
int res;
|
| 404 |
|
|
|
| 405 |
|
|
sb = dir->i_sb;
|
| 406 |
|
|
inode = hfsplus_new_inode(sb, S_IFLNK | S_IRWXUGO);
|
| 407 |
|
|
if (!inode)
|
| 408 |
|
|
return -ENOSPC;
|
| 409 |
|
|
|
| 410 |
|
|
res = page_symlink(inode, symname, strlen(symname) + 1);
|
| 411 |
|
|
if (res) {
|
| 412 |
|
|
inode->i_nlink = 0;
|
| 413 |
|
|
hfsplus_delete_inode(inode);
|
| 414 |
|
|
iput(inode);
|
| 415 |
|
|
return res;
|
| 416 |
|
|
}
|
| 417 |
|
|
|
| 418 |
|
|
mark_inode_dirty(inode);
|
| 419 |
|
|
res = hfsplus_create_cat(inode->i_ino, dir, &dentry->d_name, inode);
|
| 420 |
|
|
|
| 421 |
|
|
if (!res) {
|
| 422 |
|
|
hfsplus_instantiate(dentry, inode, inode->i_ino);
|
| 423 |
|
|
mark_inode_dirty(inode);
|
| 424 |
|
|
}
|
| 425 |
|
|
|
| 426 |
|
|
return res;
|
| 427 |
|
|
}
|
| 428 |
|
|
|
| 429 |
|
|
static int hfsplus_mknod(struct inode *dir, struct dentry *dentry,
|
| 430 |
|
|
int mode, dev_t rdev)
|
| 431 |
|
|
{
|
| 432 |
|
|
struct super_block *sb;
|
| 433 |
|
|
struct inode *inode;
|
| 434 |
|
|
int res;
|
| 435 |
|
|
|
| 436 |
|
|
sb = dir->i_sb;
|
| 437 |
|
|
inode = hfsplus_new_inode(sb, mode);
|
| 438 |
|
|
if (!inode)
|
| 439 |
|
|
return -ENOSPC;
|
| 440 |
|
|
|
| 441 |
|
|
res = hfsplus_create_cat(inode->i_ino, dir, &dentry->d_name, inode);
|
| 442 |
|
|
if (res) {
|
| 443 |
|
|
inode->i_nlink = 0;
|
| 444 |
|
|
hfsplus_delete_inode(inode);
|
| 445 |
|
|
iput(inode);
|
| 446 |
|
|
return res;
|
| 447 |
|
|
}
|
| 448 |
|
|
init_special_inode(inode, mode, rdev);
|
| 449 |
|
|
hfsplus_instantiate(dentry, inode, inode->i_ino);
|
| 450 |
|
|
mark_inode_dirty(inode);
|
| 451 |
|
|
|
| 452 |
|
|
return 0;
|
| 453 |
|
|
}
|
| 454 |
|
|
|
| 455 |
|
|
static int hfsplus_rename(struct inode *old_dir, struct dentry *old_dentry,
|
| 456 |
|
|
struct inode *new_dir, struct dentry *new_dentry)
|
| 457 |
|
|
{
|
| 458 |
|
|
int res;
|
| 459 |
|
|
|
| 460 |
|
|
/* Unlink destination if it already exists */
|
| 461 |
|
|
if (new_dentry->d_inode) {
|
| 462 |
|
|
res = hfsplus_unlink(new_dir, new_dentry);
|
| 463 |
|
|
if (res)
|
| 464 |
|
|
return res;
|
| 465 |
|
|
}
|
| 466 |
|
|
|
| 467 |
|
|
res = hfsplus_rename_cat((u32)(unsigned long)old_dentry->d_fsdata,
|
| 468 |
|
|
old_dir, &old_dentry->d_name,
|
| 469 |
|
|
new_dir, &new_dentry->d_name);
|
| 470 |
|
|
if (!res)
|
| 471 |
|
|
new_dentry->d_fsdata = old_dentry->d_fsdata;
|
| 472 |
|
|
return res;
|
| 473 |
|
|
}
|
| 474 |
|
|
|
| 475 |
|
|
const struct inode_operations hfsplus_dir_inode_operations = {
|
| 476 |
|
|
.lookup = hfsplus_lookup,
|
| 477 |
|
|
.create = hfsplus_create,
|
| 478 |
|
|
.link = hfsplus_link,
|
| 479 |
|
|
.unlink = hfsplus_unlink,
|
| 480 |
|
|
.mkdir = hfsplus_mkdir,
|
| 481 |
|
|
.rmdir = hfsplus_rmdir,
|
| 482 |
|
|
.symlink = hfsplus_symlink,
|
| 483 |
|
|
.mknod = hfsplus_mknod,
|
| 484 |
|
|
.rename = hfsplus_rename,
|
| 485 |
|
|
};
|
| 486 |
|
|
|
| 487 |
|
|
const struct file_operations hfsplus_dir_operations = {
|
| 488 |
|
|
.read = generic_read_dir,
|
| 489 |
|
|
.readdir = hfsplus_readdir,
|
| 490 |
|
|
.ioctl = hfsplus_ioctl,
|
| 491 |
|
|
.llseek = generic_file_llseek,
|
| 492 |
|
|
.release = hfsplus_dir_release,
|
| 493 |
|
|
};
|
