/* * linux/fs/hfsplus/dir.c * * Copyright (C) 2001 * Brad Boyer (flar@allandria.com) * (C) 2003 Ardis Technologies <roman@ardistech.com> * * Handling of directories */ #include <linux/errno.h>#include <linux/fs.h>#include <linux/sched.h>#include <linux/slab.h>#include <linux/random.h> #include "hfsplus_fs.h"#include "hfsplus_raw.h" static inline void hfsplus_instantiate(struct dentry *dentry, struct inode *inode, u32 cnid){ dentry->d_fsdata = (void *)(unsigned long)cnid; d_instantiate(dentry, inode);} /* Find the entry inside dir named dentry->d_name */static struct dentry *hfsplus_lookup(struct inode *dir, struct dentry *dentry, struct nameidata *nd){ struct inode *inode = NULL; struct hfs_find_data fd; struct super_block *sb; hfsplus_cat_entry entry; int err; u32 cnid, linkid = 0; u16 type; sb = dir->i_sb; dentry->d_fsdata = NULL; hfs_find_init(HFSPLUS_SB(sb).cat_tree, &fd); hfsplus_cat_build_key(sb, fd.search_key, dir->i_ino, &dentry->d_name);again: err = hfs_brec_read(&fd, &entry, sizeof(entry)); if (err) { if (err == -ENOENT) { hfs_find_exit(&fd); /* No such entry */ inode = NULL; goto out; } goto fail; } type = be16_to_cpu(entry.type); if (type == HFSPLUS_FOLDER) { if (fd.entrylength < sizeof(struct hfsplus_cat_folder)) { err = -EIO; goto fail; } cnid = be32_to_cpu(entry.folder.id); dentry->d_fsdata = (void *)(unsigned long)cnid; } else if (type == HFSPLUS_FILE) { if (fd.entrylength < sizeof(struct hfsplus_cat_file)) { err = -EIO; goto fail; } cnid = be32_to_cpu(entry.file.id); if (entry.file.user_info.fdType == cpu_to_be32(HFSP_HARDLINK_TYPE) && entry.file.user_info.fdCreator == cpu_to_be32(HFSP_HFSPLUS_CREATOR) && (entry.file.create_date == HFSPLUS_I(HFSPLUS_SB(sb).hidden_dir).create_date || entry.file.create_date == HFSPLUS_I(sb->s_root->d_inode).create_date) && HFSPLUS_SB(sb).hidden_dir) { struct qstr str; char name[32]; if (dentry->d_fsdata) { /* * We found a link pointing to another link, * so ignore it and treat it as regular file. */ cnid = (unsigned long)dentry->d_fsdata; linkid = 0; } else { dentry->d_fsdata = (void *)(unsigned long)cnid; linkid = be32_to_cpu(entry.file.permissions.dev); str.len = sprintf(name, "iNode%d", linkid); str.name = name; hfsplus_cat_build_key(sb, fd.search_key, HFSPLUS_SB(sb).hidden_dir->i_ino, &str); goto again; } } else if (!dentry->d_fsdata) dentry->d_fsdata = (void *)(unsigned long)cnid; } else { printk(KERN_ERR "hfs: invalid catalog entry type in lookup\n"); err = -EIO; goto fail; } hfs_find_exit(&fd); inode = iget(dir->i_sb, cnid); if (!inode) return ERR_PTR(-EACCES); if (S_ISREG(inode->i_mode)) HFSPLUS_I(inode).dev = linkid;out: d_add(dentry, inode); return NULL;fail: hfs_find_exit(&fd); return ERR_PTR(err);} static int hfsplus_readdir(struct file *filp, void *dirent, filldir_t filldir){ struct inode *inode = filp->f_dentry->d_inode; struct super_block *sb = inode->i_sb; int len, err; char strbuf[HFSPLUS_MAX_STRLEN + 1]; hfsplus_cat_entry entry; struct hfs_find_data fd; struct hfsplus_readdir_data *rd; u16 type; if (filp->f_pos >= inode->i_size) return 0; hfs_find_init(HFSPLUS_SB(sb).cat_tree, &fd); hfsplus_cat_build_key(sb, fd.search_key, inode->i_ino, NULL); err = hfs_brec_find(&fd); if (err) goto out; switch ((u32)filp->f_pos) { case 0: /* This is completely artificial... */ if (filldir(dirent, ".", 1, 0, inode->i_ino, DT_DIR)) goto out; filp->f_pos++; /* fall through */ case 1: hfs_bnode_read(fd.bnode, &entry, fd.entryoffset, fd.entrylength); if (be16_to_cpu(entry.type) != HFSPLUS_FOLDER_THREAD) { printk(KERN_ERR "hfs: bad catalog folder thread\n"); err = -EIO; goto out; } if (fd.entrylength < HFSPLUS_MIN_THREAD_SZ) { printk(KERN_ERR "hfs: truncated catalog thread\n"); err = -EIO; goto out; } if (filldir(dirent, "..", 2, 1, be32_to_cpu(entry.thread.parentID), DT_DIR)) goto out; filp->f_pos++; /* fall through */ default: if (filp->f_pos >= inode->i_size) goto out; err = hfs_brec_goto(&fd, filp->f_pos - 1); if (err) goto out; } for (;;) { if (be32_to_cpu(fd.key->cat.parent) != inode->i_ino) { printk(KERN_ERR "hfs: walked past end of dir\n"); err = -EIO; goto out; } hfs_bnode_read(fd.bnode, &entry, fd.entryoffset, fd.entrylength); type = be16_to_cpu(entry.type); len = HFSPLUS_MAX_STRLEN; err = hfsplus_uni2asc(sb, &fd.key->cat.name, strbuf, &len); if (err) goto out; if (type == HFSPLUS_FOLDER) { if (fd.entrylength < sizeof(struct hfsplus_cat_folder)) { printk(KERN_ERR "hfs: small dir entry\n"); err = -EIO; goto out; } if (HFSPLUS_SB(sb).hidden_dir && HFSPLUS_SB(sb).hidden_dir->i_ino == be32_to_cpu(entry.folder.id)) goto next; if (filldir(dirent, strbuf, len, filp->f_pos, be32_to_cpu(entry.folder.id), DT_DIR)) break; } else if (type == HFSPLUS_FILE) { if (fd.entrylength < sizeof(struct hfsplus_cat_file)) { printk(KERN_ERR "hfs: small file entry\n"); err = -EIO; goto out; } if (filldir(dirent, strbuf, len, filp->f_pos, be32_to_cpu(entry.file.id), DT_REG)) break; } else { printk(KERN_ERR "hfs: bad catalog entry type\n"); err = -EIO; goto out; } next: filp->f_pos++; if (filp->f_pos >= inode->i_size) goto out; err = hfs_brec_goto(&fd, 1); if (err) goto out; } rd = filp->private_data; if (!rd) { rd = kmalloc(sizeof(struct hfsplus_readdir_data), GFP_KERNEL); if (!rd) { err = -ENOMEM; goto out; } filp->private_data = rd; rd->file = filp; list_add(&rd->list, &HFSPLUS_I(inode).open_dir_list); } memcpy(&rd->key, fd.key, sizeof(struct hfsplus_cat_key));out: hfs_find_exit(&fd); return err;} static int hfsplus_dir_release(struct inode *inode, struct file *file){ struct hfsplus_readdir_data *rd = file->private_data; if (rd) { list_del(&rd->list); kfree(rd); } return 0;} static int hfsplus_create(struct inode *dir, struct dentry *dentry, int mode, struct nameidata *nd){ struct inode *inode; int res; inode = hfsplus_new_inode(dir->i_sb, mode); if (!inode) return -ENOSPC; res = hfsplus_create_cat(inode->i_ino, dir, &dentry->d_name, inode); if (res) { inode->i_nlink = 0; hfsplus_delete_inode(inode); iput(inode); return res; } hfsplus_instantiate(dentry, inode, inode->i_ino); mark_inode_dirty(inode); return 0;} static int hfsplus_link(struct dentry *src_dentry, struct inode *dst_dir, struct dentry *dst_dentry){ struct super_block *sb = dst_dir->i_sb; struct inode *inode = src_dentry->d_inode; struct inode *src_dir = src_dentry->d_parent->d_inode; struct qstr str; char name[32]; u32 cnid, id; int res; if (HFSPLUS_IS_RSRC(inode)) return -EPERM; if (inode->i_ino == (u32)(unsigned long)src_dentry->d_fsdata) { for (;;) { get_random_bytes(&id, sizeof(cnid)); id &= 0x3fffffff; str.name = name; str.len = sprintf(name, "iNode%d", id); res = hfsplus_rename_cat(inode->i_ino, src_dir, &src_dentry->d_name, HFSPLUS_SB(sb).hidden_dir, &str); if (!res) break; if (res != -EEXIST) return res; } HFSPLUS_I(inode).dev = id; cnid = HFSPLUS_SB(sb).next_cnid++; src_dentry->d_fsdata = (void *)(unsigned long)cnid; res = hfsplus_create_cat(cnid, src_dir, &src_dentry->d_name, inode); if (res) /* panic? */ return res; HFSPLUS_SB(sb).file_count++; } cnid = HFSPLUS_SB(sb).next_cnid++; res = hfsplus_create_cat(cnid, dst_dir, &dst_dentry->d_name, inode); if (res) return res; inode->i_nlink++; hfsplus_instantiate(dst_dentry, inode, cnid); atomic_inc(&inode->i_count); inode->i_ctime = CURRENT_TIME_SEC; mark_inode_dirty(inode); HFSPLUS_SB(sb).file_count++; sb->s_dirt = 1; return 0;} static int hfsplus_unlink(struct inode *dir, struct dentry *dentry){ struct super_block *sb = dir->i_sb; struct inode *inode = dentry->d_inode; struct qstr str; char name[32]; u32 cnid; int res; if (HFSPLUS_IS_RSRC(inode)) return -EPERM; cnid = (u32)(unsigned long)dentry->d_fsdata; if (inode->i_ino == cnid && atomic_read(&HFSPLUS_I(inode).opencnt)) { str.name = name; str.len = sprintf(name, "temp%lu", inode->i_ino); res = hfsplus_rename_cat(inode->i_ino, dir, &dentry->d_name, HFSPLUS_SB(sb).hidden_dir, &str); if (!res) inode->i_flags |= S_DEAD; return res; } res = hfsplus_delete_cat(cnid, dir, &dentry->d_name); if (res) return res; if (inode->i_nlink > 0) inode->i_nlink--; hfsplus_delete_inode(inode); if (inode->i_ino != cnid && !inode->i_nlink) { if (!atomic_read(&HFSPLUS_I(inode).opencnt)) { res = hfsplus_delete_cat(inode->i_ino, HFSPLUS_SB(sb).hidden_dir, NULL); if (!res) hfsplus_delete_inode(inode); } else inode->i_flags |= S_DEAD; } else inode->i_nlink = 0; inode->i_ctime = CURRENT_TIME_SEC; mark_inode_dirty(inode); return res;} static int hfsplus_mkdir(struct inode *dir, struct dentry *dentry, int mode){ struct inode *inode; int res; inode = hfsplus_new_inode(dir->i_sb, S_IFDIR | mode); if (!inode) return -ENOSPC; res = hfsplus_create_cat(inode->i_ino, dir, &dentry->d_name, inode); if (res) { inode->i_nlink = 0; hfsplus_delete_inode(inode); iput(inode); return res; } hfsplus_instantiate(dentry, inode, inode->i_ino); mark_inode_dirty(inode); return 0;} static int hfsplus_rmdir(struct inode *dir, struct dentry *dentry){ struct inode *inode; int res; inode = dentry->d_inode; if (inode->i_size != 2) return -ENOTEMPTY; res = hfsplus_delete_cat(inode->i_ino, dir, &dentry->d_name); if (res) return res; inode->i_nlink = 0; inode->i_ctime = CURRENT_TIME_SEC; hfsplus_delete_inode(inode); mark_inode_dirty(inode); return 0;} static int hfsplus_symlink(struct inode *dir, struct dentry *dentry, const char *symname){ struct super_block *sb; struct inode *inode; int res; sb = dir->i_sb; inode = hfsplus_new_inode(sb, S_IFLNK | S_IRWXUGO); if (!inode) return -ENOSPC; res = page_symlink(inode, symname, strlen(symname) + 1); if (res) { inode->i_nlink = 0; hfsplus_delete_inode(inode); iput(inode); return res; } mark_inode_dirty(inode); res = hfsplus_create_cat(inode->i_ino, dir, &dentry->d_name, inode); if (!res) { hfsplus_instantiate(dentry, inode, inode->i_ino); mark_inode_dirty(inode); } return res;} static int hfsplus_mknod(struct inode *dir, struct dentry *dentry, int mode, dev_t rdev){ struct super_block *sb; struct inode *inode; int res; sb = dir->i_sb; inode = hfsplus_new_inode(sb, mode); if (!inode) return -ENOSPC; res = hfsplus_create_cat(inode->i_ino, dir, &dentry->d_name, inode); if (res) { inode->i_nlink = 0; hfsplus_delete_inode(inode); iput(inode); return res; } init_special_inode(inode, mode, rdev); hfsplus_instantiate(dentry, inode, inode->i_ino); mark_inode_dirty(inode); return 0;} static int hfsplus_rename(struct inode *old_dir, struct dentry *old_dentry, struct inode *new_dir, struct dentry *new_dentry){ int res; /* Unlink destination if it already exists */ if (new_dentry->d_inode) { res = hfsplus_unlink(new_dir, new_dentry); if (res) return res; } res = hfsplus_rename_cat((u32)(unsigned long)old_dentry->d_fsdata, old_dir, &old_dentry->d_name, new_dir, &new_dentry->d_name); if (!res) new_dentry->d_fsdata = old_dentry->d_fsdata; return res;} struct inode_operations hfsplus_dir_inode_operations = { .lookup = hfsplus_lookup, .create = hfsplus_create, .link = hfsplus_link, .unlink = hfsplus_unlink, .mkdir = hfsplus_mkdir, .rmdir = hfsplus_rmdir, .symlink = hfsplus_symlink, .mknod = hfsplus_mknod, .rename = hfsplus_rename,}; const struct file_operations hfsplus_dir_operations = { .read = generic_read_dir, .readdir = hfsplus_readdir, .ioctl = hfsplus_ioctl, .llseek = generic_file_llseek, .release = hfsplus_dir_release,};
/*
* linux/fs/hfsplus/dir.c
*
* Copyright (C) 2001
* Brad Boyer (flar@allandria.com)
* (C) 2003 Ardis Technologies <roman@ardistech.com>
*
* Handling of directories
*/
#include <linux/errno.h>
#include <linux/fs.h>
#include <linux/sched.h>
#include <linux/slab.h>
#include <linux/random.h>
#include "hfsplus_fs.h"
#include "hfsplus_raw.h"
static inline void hfsplus_instantiate(struct dentry *dentry,
struct inode *inode, u32 cnid)
{
dentry->d_fsdata = (void *)(unsigned long)cnid;
d_instantiate(dentry, inode);
}
/* Find the entry inside dir named dentry->d_name */
static struct dentry *hfsplus_lookup(struct inode *dir, struct dentry *dentry,
struct nameidata *nd)
{
struct inode *inode = NULL;
struct hfs_find_data fd;
struct super_block *sb;
hfsplus_cat_entry entry;
int err;
u32 cnid, linkid = 0;
u16 type;
sb = dir->i_sb;
dentry->d_fsdata = NULL;
hfs_find_init(HFSPLUS_SB(sb).cat_tree, &fd);
hfsplus_cat_build_key(sb, fd.search_key, dir->i_ino, &dentry->d_name);
again:
err = hfs_brec_read(&fd, &entry, sizeof(entry));
if (err) {
if (err == -ENOENT) {
hfs_find_exit(&fd);
/* No such entry */
inode = NULL;
goto out;
}
goto fail;
}
type = be16_to_cpu(entry.type);
if (type == HFSPLUS_FOLDER) {
if (fd.entrylength < sizeof(struct hfsplus_cat_folder)) {
err = -EIO;
goto fail;
}
cnid = be32_to_cpu(entry.folder.id);
dentry->d_fsdata = (void *)(unsigned long)cnid;
} else if (type == HFSPLUS_FILE) {
if (fd.entrylength < sizeof(struct hfsplus_cat_file)) {
err = -EIO;
goto fail;
}
cnid = be32_to_cpu(entry.file.id);
if (entry.file.user_info.fdType == cpu_to_be32(HFSP_HARDLINK_TYPE) &&
entry.file.user_info.fdCreator == cpu_to_be32(HFSP_HFSPLUS_CREATOR) &&
(entry.file.create_date == HFSPLUS_I(HFSPLUS_SB(sb).hidden_dir).create_date ||
entry.file.create_date == HFSPLUS_I(sb->s_root->d_inode).create_date) &&
HFSPLUS_SB(sb).hidden_dir) {
struct qstr str;
char name[32];
if (dentry->d_fsdata) {
/*
* We found a link pointing to another link,
* so ignore it and treat it as regular file.
*/
cnid = (unsigned long)dentry->d_fsdata;
linkid = 0;
} else {
dentry->d_fsdata = (void *)(unsigned long)cnid;
linkid = be32_to_cpu(entry.file.permissions.dev);
str.len = sprintf(name, "iNode%d", linkid);
str.name = name;
hfsplus_cat_build_key(sb, fd.search_key, HFSPLUS_SB(sb).hidden_dir->i_ino, &str);
goto again;
}
} else if (!dentry->d_fsdata)
dentry->d_fsdata = (void *)(unsigned long)cnid;
} else {
printk(KERN_ERR "hfs: invalid catalog entry type in lookup\n");
err = -EIO;
goto fail;
}
hfs_find_exit(&fd);
inode = iget(dir->i_sb, cnid);
if (!inode)
return ERR_PTR(-EACCES);
if (S_ISREG(inode->i_mode))
HFSPLUS_I(inode).dev = linkid;
out:
d_add(dentry, inode);
return NULL;
fail:
hfs_find_exit(&fd);
return ERR_PTR(err);
}
static int hfsplus_readdir(struct file *filp, void *dirent, filldir_t filldir)
{
struct inode *inode = filp->f_dentry->d_inode;
struct super_block *sb = inode->i_sb;
int len, err;
char strbuf[HFSPLUS_MAX_STRLEN + 1];
hfsplus_cat_entry entry;
struct hfs_find_data fd;
struct hfsplus_readdir_data *rd;
u16 type;
if (filp->f_pos >= inode->i_size)
return 0;
hfs_find_init(HFSPLUS_SB(sb).cat_tree, &fd);
hfsplus_cat_build_key(sb, fd.search_key, inode->i_ino, NULL);
err = hfs_brec_find(&fd);
if (err)
goto out;
switch ((u32)filp->f_pos) {
case 0:
/* This is completely artificial... */
if (filldir(dirent, ".", 1, 0, inode->i_ino, DT_DIR))
goto out;
filp->f_pos++;
/* fall through */
case 1:
hfs_bnode_read(fd.bnode, &entry, fd.entryoffset, fd.entrylength);
if (be16_to_cpu(entry.type) != HFSPLUS_FOLDER_THREAD) {
printk(KERN_ERR "hfs: bad catalog folder thread\n");
err = -EIO;
goto out;
}
if (fd.entrylength < HFSPLUS_MIN_THREAD_SZ) {
printk(KERN_ERR "hfs: truncated catalog thread\n");
err = -EIO;
goto out;
}
if (filldir(dirent, "..", 2, 1,
be32_to_cpu(entry.thread.parentID), DT_DIR))
goto out;
filp->f_pos++;
/* fall through */
default:
if (filp->f_pos >= inode->i_size)
goto out;
err = hfs_brec_goto(&fd, filp->f_pos - 1);
if (err)
goto out;
}
for (;;) {
if (be32_to_cpu(fd.key->cat.parent) != inode->i_ino) {
printk(KERN_ERR "hfs: walked past end of dir\n");
err = -EIO;
goto out;
}
hfs_bnode_read(fd.bnode, &entry, fd.entryoffset, fd.entrylength);
type = be16_to_cpu(entry.type);
len = HFSPLUS_MAX_STRLEN;
err = hfsplus_uni2asc(sb, &fd.key->cat.name, strbuf, &len);
if (err)
goto out;
if (type == HFSPLUS_FOLDER) {
if (fd.entrylength < sizeof(struct hfsplus_cat_folder)) {
printk(KERN_ERR "hfs: small dir entry\n");
err = -EIO;
goto out;
}
if (HFSPLUS_SB(sb).hidden_dir &&
HFSPLUS_SB(sb).hidden_dir->i_ino == be32_to_cpu(entry.folder.id))
goto next;
if (filldir(dirent, strbuf, len, filp->f_pos,
be32_to_cpu(entry.folder.id), DT_DIR))
break;
} else if (type == HFSPLUS_FILE) {
if (fd.entrylength < sizeof(struct hfsplus_cat_file)) {
printk(KERN_ERR "hfs: small file entry\n");
err = -EIO;
goto out;
}
if (filldir(dirent, strbuf, len, filp->f_pos,
be32_to_cpu(entry.file.id), DT_REG))
break;
} else {
printk(KERN_ERR "hfs: bad catalog entry type\n");
err = -EIO;
goto out;
}
next:
filp->f_pos++;
if (filp->f_pos >= inode->i_size)
goto out;
err = hfs_brec_goto(&fd, 1);
if (err)
goto out;
}
rd = filp->private_data;
if (!rd) {
rd = kmalloc(sizeof(struct hfsplus_readdir_data), GFP_KERNEL);
if (!rd) {
err = -ENOMEM;
goto out;
}
filp->private_data = rd;
rd->file = filp;
list_add(&rd->list, &HFSPLUS_I(inode).open_dir_list);
}
memcpy(&rd->key, fd.key, sizeof(struct hfsplus_cat_key));
out:
hfs_find_exit(&fd);
return err;
}
static int hfsplus_dir_release(struct inode *inode, struct file *file)
{
struct hfsplus_readdir_data *rd = file->private_data;
if (rd) {
list_del(&rd->list);
kfree(rd);
}
return 0;
}
static int hfsplus_create(struct inode *dir, struct dentry *dentry, int mode,
struct nameidata *nd)
{
struct inode *inode;
int res;
inode = hfsplus_new_inode(dir->i_sb, mode);
if (!inode)
return -ENOSPC;
res = hfsplus_create_cat(inode->i_ino, dir, &dentry->d_name, inode);
if (res) {
inode->i_nlink = 0;
hfsplus_delete_inode(inode);
iput(inode);
return res;
}
hfsplus_instantiate(dentry, inode, inode->i_ino);
mark_inode_dirty(inode);
return 0;
}
static int hfsplus_link(struct dentry *src_dentry, struct inode *dst_dir,
struct dentry *dst_dentry)
{
struct super_block *sb = dst_dir->i_sb;
struct inode *inode = src_dentry->d_inode;
struct inode *src_dir = src_dentry->d_parent->d_inode;
struct qstr str;
char name[32];
u32 cnid, id;
int res;
if (HFSPLUS_IS_RSRC(inode))
return -EPERM;
if (inode->i_ino == (u32)(unsigned long)src_dentry->d_fsdata) {
for (;;) {
get_random_bytes(&id, sizeof(cnid));
id &= 0x3fffffff;
str.name = name;
str.len = sprintf(name, "iNode%d", id);
res = hfsplus_rename_cat(inode->i_ino,
src_dir, &src_dentry->d_name,
HFSPLUS_SB(sb).hidden_dir, &str);
if (!res)
break;
if (res != -EEXIST)
return res;
}
HFSPLUS_I(inode).dev = id;
cnid = HFSPLUS_SB(sb).next_cnid++;
src_dentry->d_fsdata = (void *)(unsigned long)cnid;
res = hfsplus_create_cat(cnid, src_dir, &src_dentry->d_name, inode);
if (res)
/* panic? */
return res;
HFSPLUS_SB(sb).file_count++;
}
cnid = HFSPLUS_SB(sb).next_cnid++;
res = hfsplus_create_cat(cnid, dst_dir, &dst_dentry->d_name, inode);
if (res)
return res;
inode->i_nlink++;
hfsplus_instantiate(dst_dentry, inode, cnid);
atomic_inc(&inode->i_count);
inode->i_ctime = CURRENT_TIME_SEC;
mark_inode_dirty(inode);
HFSPLUS_SB(sb).file_count++;
sb->s_dirt = 1;
return 0;
}
static int hfsplus_unlink(struct inode *dir, struct dentry *dentry)
{
struct super_block *sb = dir->i_sb;
struct inode *inode = dentry->d_inode;
struct qstr str;
char name[32];
u32 cnid;
int res;
if (HFSPLUS_IS_RSRC(inode))
return -EPERM;
cnid = (u32)(unsigned long)dentry->d_fsdata;
if (inode->i_ino == cnid &&
atomic_read(&HFSPLUS_I(inode).opencnt)) {
str.name = name;
str.len = sprintf(name, "temp%lu", inode->i_ino);
res = hfsplus_rename_cat(inode->i_ino,
dir, &dentry->d_name,
HFSPLUS_SB(sb).hidden_dir, &str);
if (!res)
inode->i_flags |= S_DEAD;
return res;
}
res = hfsplus_delete_cat(cnid, dir, &dentry->d_name);
if (res)
return res;
if (inode->i_nlink > 0)
inode->i_nlink--;
hfsplus_delete_inode(inode);
if (inode->i_ino != cnid && !inode->i_nlink) {
if (!atomic_read(&HFSPLUS_I(inode).opencnt)) {
res = hfsplus_delete_cat(inode->i_ino, HFSPLUS_SB(sb).hidden_dir, NULL);
if (!res)
hfsplus_delete_inode(inode);
} else
inode->i_flags |= S_DEAD;
} else
inode->i_nlink = 0;
inode->i_ctime = CURRENT_TIME_SEC;
mark_inode_dirty(inode);
return res;
}
static int hfsplus_mkdir(struct inode *dir, struct dentry *dentry, int mode)
{
struct inode *inode;
int res;
inode = hfsplus_new_inode(dir->i_sb, S_IFDIR | mode);
if (!inode)
return -ENOSPC;
res = hfsplus_create_cat(inode->i_ino, dir, &dentry->d_name, inode);
if (res) {
inode->i_nlink = 0;
hfsplus_delete_inode(inode);
iput(inode);
return res;
}
hfsplus_instantiate(dentry, inode, inode->i_ino);
mark_inode_dirty(inode);
return 0;
}
static int hfsplus_rmdir(struct inode *dir, struct dentry *dentry)
{
struct inode *inode;
int res;
inode = dentry->d_inode;
if (inode->i_size != 2)
return -ENOTEMPTY;
res = hfsplus_delete_cat(inode->i_ino, dir, &dentry->d_name);
if (res)
return res;
inode->i_nlink = 0;
inode->i_ctime = CURRENT_TIME_SEC;
hfsplus_delete_inode(inode);
mark_inode_dirty(inode);
return 0;
}
static int hfsplus_symlink(struct inode *dir, struct dentry *dentry,
const char *symname)
{
struct super_block *sb;
struct inode *inode;
int res;
sb = dir->i_sb;
inode = hfsplus_new_inode(sb, S_IFLNK | S_IRWXUGO);
if (!inode)
return -ENOSPC;
res = page_symlink(inode, symname, strlen(symname) + 1);
if (res) {
inode->i_nlink = 0;
hfsplus_delete_inode(inode);
iput(inode);
return res;
}
mark_inode_dirty(inode);
res = hfsplus_create_cat(inode->i_ino, dir, &dentry->d_name, inode);
if (!res) {
hfsplus_instantiate(dentry, inode, inode->i_ino);
mark_inode_dirty(inode);
}
return res;
}
static int hfsplus_mknod(struct inode *dir, struct dentry *dentry,
int mode, dev_t rdev)
{
struct super_block *sb;
struct inode *inode;
int res;
sb = dir->i_sb;
inode = hfsplus_new_inode(sb, mode);
if (!inode)
return -ENOSPC;
res = hfsplus_create_cat(inode->i_ino, dir, &dentry->d_name, inode);
if (res) {
inode->i_nlink = 0;
hfsplus_delete_inode(inode);
iput(inode);
return res;
}
init_special_inode(inode, mode, rdev);
hfsplus_instantiate(dentry, inode, inode->i_ino);
mark_inode_dirty(inode);
return 0;
}
static int hfsplus_rename(struct inode *old_dir, struct dentry *old_dentry,
struct inode *new_dir, struct dentry *new_dentry)
{
int res;
/* Unlink destination if it already exists */
if (new_dentry->d_inode) {
res = hfsplus_unlink(new_dir, new_dentry);
if (res)
return res;
}
res = hfsplus_rename_cat((u32)(unsigned long)old_dentry->d_fsdata,
old_dir, &old_dentry->d_name,
new_dir, &new_dentry->d_name);
if (!res)
new_dentry->d_fsdata = old_dentry->d_fsdata;
return res;
}
struct inode_operations hfsplus_dir_inode_operations = {
.lookup = hfsplus_lookup,
.create = hfsplus_create,
.link = hfsplus_link,
.unlink = hfsplus_unlink,
.mkdir = hfsplus_mkdir,
.rmdir = hfsplus_rmdir,
.symlink = hfsplus_symlink,
.mknod = hfsplus_mknod,
.rename = hfsplus_rename,
};
const struct file_operations hfsplus_dir_operations = {
.read = generic_read_dir,
.readdir = hfsplus_readdir,
.ioctl = hfsplus_ioctl,
.llseek = generic_file_llseek,
.release = hfsplus_dir_release,
};