/*
* The minix V2 function to read an inode.
*/
static struct inode *V2_minix_iget(struct inode *inode)
{
struct buffer_head * bh;
struct minix2_inode * raw_inode;
struct minix_inode_info *minix_inode = minix_i(inode);
int i;
raw_inode = minix_V2_raw_inode(inode->i_sb, inode->i_ino, &bh);
if (!raw_inode) {
iget_failed(inode);
return ERR_PTR(-EIO);
}
inode->i_mode = raw_inode->i_mode;
i_uid_write(inode, raw_inode->i_uid);
i_gid_write(inode, raw_inode->i_gid);
set_nlink(inode, raw_inode->i_nlinks);
inode->i_size = raw_inode->i_size;
inode->i_mtime.tv_sec = raw_inode->i_mtime;
inode->i_atime.tv_sec = raw_inode->i_atime;
inode->i_ctime.tv_sec = raw_inode->i_ctime;
inode->i_mtime.tv_nsec = 0;
inode->i_atime.tv_nsec = 0;
inode->i_ctime.tv_nsec = 0;
inode->i_blocks = 0;
for (i = 0; i < 10; i++)
minix_inode->u.i2_data[i] = raw_inode->i_zone[i];
minix_set_inode(inode, old_decode_dev(raw_inode->i_zone[0]));
brelse(bh);
unlock_new_inode(inode);
return inode;
}
/**
* nilfs_cpfile_read - read or get cpfile inode
* @sb: super block instance
* @cpsize: size of a checkpoint entry
* @raw_inode: on-disk cpfile inode
* @inodep: buffer to store the inode
*/
int nilfs_cpfile_read(struct super_block *sb, size_t cpsize,
struct nilfs_inode *raw_inode, struct inode **inodep)
{
struct inode *cpfile;
int err;
cpfile = nilfs_iget_locked(sb, NULL, NILFS_CPFILE_INO);
if (unlikely(!cpfile))
return -ENOMEM;
if (!(cpfile->i_state & I_NEW))
goto out;
err = nilfs_mdt_init(cpfile, NILFS_MDT_GFP, 0);
if (err)
goto failed;
nilfs_mdt_set_entry_size(cpfile, cpsize,
sizeof(struct nilfs_cpfile_header));
err = nilfs_read_inode_common(cpfile, raw_inode);
if (err)
goto failed;
unlock_new_inode(cpfile);
out:
*inodep = cpfile;
return 0;
failed:
iget_failed(cpfile);
return err;
}
/**
* ecryptfs_create
* @dir: The inode of the directory in which to create the file.
* @dentry: The eCryptfs dentry
* @mode: The mode of the new file.
*
* Creates a new file.
*
* Returns zero on success; non-zero on error condition
*/
static int
ecryptfs_create(struct inode *directory_inode, struct dentry *ecryptfs_dentry,
umode_t mode, bool excl)
{
struct inode *ecryptfs_inode;
int rc;
ecryptfs_inode = ecryptfs_do_create(directory_inode, ecryptfs_dentry,
mode);
if (IS_ERR(ecryptfs_inode)) {
ecryptfs_printk(KERN_WARNING, "Failed to create file in"
"lower filesystem\n");
rc = PTR_ERR(ecryptfs_inode);
goto out;
}
/* At this point, a file exists on "disk"; we need to make sure
* that this on disk file is prepared to be an ecryptfs file */
rc = ecryptfs_initialize_file(ecryptfs_dentry, ecryptfs_inode);
if (rc) {
ecryptfs_do_unlink(directory_inode, ecryptfs_dentry,
ecryptfs_inode);
iget_failed(ecryptfs_inode);
goto out;
}
unlock_new_inode(ecryptfs_inode);
d_instantiate(ecryptfs_dentry, ecryptfs_inode);
out:
return rc;
}
// corresponds to hammer_vfs_vget
struct inode *hammerfs_iget(struct super_block *sb, ino_t ino)
{
struct hammer_transaction trans;
struct hammer_mount *hmp = (void*)sb->s_fs_info;
struct hammer_inode *ip;
struct inode *inode;
int error = 0;
hammer_simple_transaction(&trans, hmp);
/*
* Lookup the requested HAMMER inode. The structure must be
* left unlocked while we manipulate the related vnode to avoid
* a deadlock.
*/
ip = hammer_get_inode(&trans, NULL, ino,
hmp->asof, HAMMER_DEF_LOCALIZATION,
0, &error);
if (ip == NULL) {
hammer_done_transaction(&trans);
goto failed;
}
error = hammerfs_get_inode(sb, ip, &inode);
// hammer_rel_inode(ip, 0);
hammer_done_transaction(&trans);
return inode;
failed:
iget_failed(inode);
return ERR_PTR(error);
}
/*
* Front-end to lookup the inode-cache maintained by the VFS using the ORANGEFS
* file handle.
*
* @sb: the file system super block instance.
* @ref: The ORANGEFS object for which we are trying to locate an inode structure.
*/
struct inode *orangefs_iget(struct super_block *sb, struct orangefs_object_kref *ref)
{
struct inode *inode = NULL;
unsigned long hash;
int error;
hash = orangefs_handle_hash(ref);
inode = iget5_locked(sb, hash, orangefs_test_inode, orangefs_set_inode, ref);
if (!inode || !(inode->i_state & I_NEW))
return inode;
error = orangefs_inode_getattr(inode, 1, 1);
if (error) {
iget_failed(inode);
return ERR_PTR(error);
}
inode->i_ino = hash; /* needed for stat etc */
orangefs_init_iops(inode);
unlock_new_inode(inode);
gossip_debug(GOSSIP_INODE_DEBUG,
"iget handle %pU, fsid %d hash %ld i_ino %lu\n",
&ref->khandle,
ref->fs_id,
hash,
inode->i_ino);
return inode;
}
static struct inode *__logfs_iget(struct super_block *sb, ino_t ino)
{
struct inode *inode = iget_locked(sb, ino);
int err;
if (!inode)
return ERR_PTR(-ENOMEM);
if (!(inode->i_state & I_NEW))
return inode;
err = logfs_read_inode(inode);
if (err || inode->i_nlink == 0) {
clear_nlink(inode);
logfs_inode(inode)->li_flags |= LOGFS_IF_ZOMBIE;
iget_failed(inode);
if (!err)
err = -ENOENT;
return ERR_PTR(err);
}
logfs_inode_setops(inode);
unlock_new_inode(inode);
return inode;
}
struct inode *f2fs_iget(struct super_block *sb, unsigned long ino)
{
struct f2fs_sb_info *sbi = F2FS_SB(sb);
struct inode *inode;
int ret = 0;
inode = iget_locked(sb, ino);
if (!inode)
return ERR_PTR(-ENOMEM);
if (!(inode->i_state & I_NEW)) {
trace_f2fs_iget(inode);
return inode;
}
if (ino == F2FS_NODE_INO(sbi) || ino == F2FS_META_INO(sbi))
goto make_now;
ret = do_read_inode(inode);
if (ret)
goto bad_inode;
make_now:
if (ino == F2FS_NODE_INO(sbi)) {
inode->i_mapping->a_ops = &f2fs_node_aops;
mapping_set_gfp_mask(inode->i_mapping, GFP_F2FS_ZERO);
} else if (ino == F2FS_META_INO(sbi)) {
inode->i_mapping->a_ops = &f2fs_meta_aops;
mapping_set_gfp_mask(inode->i_mapping, GFP_F2FS_ZERO);
} else if (S_ISREG(inode->i_mode)) {
inode->i_op = &f2fs_file_inode_operations;
inode->i_fop = &f2fs_file_operations;
inode->i_mapping->a_ops = &f2fs_dblock_aops;
} else if (S_ISDIR(inode->i_mode)) {
inode->i_op = &f2fs_dir_inode_operations;
inode->i_fop = &f2fs_dir_operations;
inode->i_mapping->a_ops = &f2fs_dblock_aops;
mapping_set_gfp_mask(inode->i_mapping, GFP_F2FS_HIGH_ZERO);
} else if (S_ISLNK(inode->i_mode)) {
if (f2fs_encrypted_inode(inode))
inode->i_op = &f2fs_encrypted_symlink_inode_operations;
else
inode->i_op = &f2fs_symlink_inode_operations;
inode_nohighmem(inode);
inode->i_mapping->a_ops = &f2fs_dblock_aops;
} else if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode) ||
S_ISFIFO(inode->i_mode) || S_ISSOCK(inode->i_mode)) {
inode->i_op = &f2fs_special_inode_operations;
init_special_inode(inode, inode->i_mode, inode->i_rdev);
} else {
ret = -EIO;
goto bad_inode;
}
unlock_new_inode(inode);
trace_f2fs_iget(inode);
return inode;
bad_inode:
iget_failed(inode);
trace_f2fs_iget_exit(inode, ret);
return ERR_PTR(ret);
}
static struct dentry *f2fs_lookup(struct inode *dir, struct dentry *dentry,
unsigned int flags)
{
struct inode *inode = NULL;
struct f2fs_dir_entry *de;
struct page *page;
if (dentry->d_name.len > F2FS_NAME_LEN)
return ERR_PTR(-ENAMETOOLONG);
de = f2fs_find_entry(dir, &dentry->d_name, &page);
if (de) {
nid_t ino = le32_to_cpu(de->ino);
f2fs_dentry_kunmap(dir, page);
f2fs_put_page(page, 0);
inode = f2fs_iget(dir->i_sb, ino);
if (IS_ERR(inode))
return ERR_CAST(inode);
if (f2fs_has_inline_dots(inode)) {
int err;
err = __recover_dot_dentries(inode, dir->i_ino);
if (err) {
iget_failed(inode);
return ERR_PTR(err);
}
}
}
return d_splice_alias(inode, dentry);
}
static struct inode *__logfs_iget(struct super_block *sb, ino_t ino)
{
struct inode *inode = iget_locked(sb, ino);
int err;
if (!inode)
return ERR_PTR(-ENOMEM);
if (!(inode->i_state & I_NEW))
return inode;
err = logfs_read_inode(inode);
if (err || inode->i_nlink == 0) {
/* inode->i_nlink == 0 can be true when called from
* block validator */
/* set i_nlink to 0 to prevent caching */
clear_nlink(inode);
logfs_inode(inode)->li_flags |= LOGFS_IF_ZOMBIE;
iget_failed(inode);
if (!err)
err = -ENOENT;
return ERR_PTR(err);
}
logfs_inode_setops(inode);
unlock_new_inode(inode);
return inode;
}
struct inode *sysv_iget(struct super_block *sb, unsigned int ino)
{
struct sysv_sb_info * sbi = SYSV_SB(sb);
struct buffer_head * bh;
struct sysv_inode * raw_inode;
struct sysv_inode_info * si;
struct inode *inode;
unsigned int block;
if (!ino || ino > sbi->s_ninodes) {
printk("Bad inode number on dev %s: %d is out of range\n",
sb->s_id, ino);
return ERR_PTR(-EIO);
}
inode = iget_locked(sb, ino);
if (!inode)
return ERR_PTR(-ENOMEM);
if (!(inode->i_state & I_NEW))
return inode;
raw_inode = sysv_raw_inode(sb, ino, &bh);
if (!raw_inode) {
printk("Major problem: unable to read inode from dev %s\n",
inode->i_sb->s_id);
goto bad_inode;
}
/* SystemV FS: kludge permissions if ino==SYSV_ROOT_INO ?? */
inode->i_mode = fs16_to_cpu(sbi, raw_inode->i_mode);
inode->i_uid = (uid_t)fs16_to_cpu(sbi, raw_inode->i_uid);
inode->i_gid = (gid_t)fs16_to_cpu(sbi, raw_inode->i_gid);
set_nlink(inode, fs16_to_cpu(sbi, raw_inode->i_nlink));
inode->i_size = fs32_to_cpu(sbi, raw_inode->i_size);
inode->i_atime.tv_sec = fs32_to_cpu(sbi, raw_inode->i_atime);
inode->i_mtime.tv_sec = fs32_to_cpu(sbi, raw_inode->i_mtime);
inode->i_ctime.tv_sec = fs32_to_cpu(sbi, raw_inode->i_ctime);
inode->i_ctime.tv_nsec = 0;
inode->i_atime.tv_nsec = 0;
inode->i_mtime.tv_nsec = 0;
inode->i_blocks = 0;
si = SYSV_I(inode);
for (block = 0; block < 10+1+1+1; block++)
read3byte(sbi, &raw_inode->i_data[3*block],
(u8 *)&si->i_data[block]);
brelse(bh);
si->i_dir_start_lookup = 0;
if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode))
sysv_set_inode(inode,
old_decode_dev(fs32_to_cpu(sbi, si->i_data[0])));
else
sysv_set_inode(inode, 0);
unlock_new_inode(inode);
return inode;
bad_inode:
iget_failed(inode);
return ERR_PTR(-EIO);
}
static int sfs_fill_super(struct super_block *sb, void *data, int silent)
{
sfs_info_t *info;
printk(KERN_INFO "sfs: sfs_fill_super\n");
if (!(info = (sfs_info_t *)(kzalloc(sizeof(sfs_info_t), GFP_KERNEL))))
return -ENOMEM;
info->vfs_sb = sb;
if (init_browsing(info) < 0)
{
kfree(info);
return -EIO;
}
/* Updating the VFS super_block */
sb->s_magic = info->sb.type;
sb->s_blocksize = info->sb.block_size;
sb->s_blocksize_bits = get_bit_pos(info->sb.block_size);
sb->s_type = &sfs; // file_system_type
sb->s_op = &sfs_sops; // super block operations
sfs_root_inode = iget_locked(sb, ROOT_INODE_NUM); // obtain an inode from VFS
if (!sfs_root_inode)
{
shut_browsing(info);
kfree(info);
return -EACCES;
}
if (sfs_root_inode->i_state & I_NEW) // allocated fresh now
{
printk(KERN_INFO "sfs: Got new root inode, let's fill in\n");
sfs_root_inode->i_op = &sfs_iops; // inode operations
sfs_root_inode->i_mode = S_IFDIR | S_IRWXU | S_IRWXG | S_IRWXO;
sfs_root_inode->i_fop = &sfs_fops; // file operations
sfs_root_inode->i_mapping->a_ops = &sfs_aops; // address operations
unlock_new_inode(sfs_root_inode);
}
else
{
printk(KERN_INFO "sfs: Got root inode from inode cache\n");
}
#if (LINUX_VERSION_CODE < KERNEL_VERSION(3,4,0))
sb->s_root = d_alloc_root(sfs_root_inode);
#else
sb->s_root = d_make_root(sfs_root_inode);
#endif
if (!sb->s_root)
{
iget_failed(sfs_root_inode);
shut_browsing(info);
kfree(info);
return -ENOMEM;
}
return 0;
}
/**
* nilfs_dat_read - read or get dat inode
* @sb: super block instance
* @entry_size: size of a dat entry
* @raw_inode: on-disk dat inode
* @inodep: buffer to store the inode
*/
int nilfs_dat_read(struct super_block *sb, size_t entry_size,
struct nilfs_inode *raw_inode, struct inode **inodep)
{
static struct lock_class_key dat_lock_key;
struct inode *dat;
struct nilfs_dat_info *di;
int err;
if (entry_size > sb->s_blocksize) {
printk(KERN_ERR
"NILFS: too large DAT entry size: %zu bytes.\n",
entry_size);
return -EINVAL;
} else if (entry_size < NILFS_MIN_DAT_ENTRY_SIZE) {
printk(KERN_ERR
"NILFS: too small DAT entry size: %zu bytes.\n",
entry_size);
return -EINVAL;
}
dat = nilfs_iget_locked(sb, NULL, NILFS_DAT_INO);
if (unlikely(!dat))
return -ENOMEM;
if (!(dat->i_state & I_NEW))
goto out;
err = nilfs_mdt_init(dat, NILFS_MDT_GFP, sizeof(*di));
if (err)
goto failed;
err = nilfs_palloc_init_blockgroup(dat, entry_size);
if (err)
goto failed;
di = NILFS_DAT_I(dat);
lockdep_set_class(&di->mi.mi_sem, &dat_lock_key);
nilfs_palloc_setup_cache(dat, &di->palloc_cache);
nilfs_mdt_setup_shadow_map(dat, &di->shadow);
err = nilfs_read_inode_common(dat, raw_inode);
if (err)
goto failed;
unlock_new_inode(dat);
out:
*inodep = dat;
return 0;
failed:
iget_failed(dat);
return err;
}
/**
* vxfs_iget - get an inode
* @sbp: the superblock to get the inode for
* @ino: the number of the inode to get
*
* Description:
* vxfs_read_inode creates an inode, reads the disk inode for @ino and fills
* in all relevant fields in the new inode.
*/
struct inode *
vxfs_iget(struct super_block *sbp, ino_t ino)
{
struct vxfs_inode_info *vip;
const struct address_space_operations *aops;
struct inode *ip;
ip = iget_locked(sbp, ino);
if (!ip)
return ERR_PTR(-ENOMEM);
if (!(ip->i_state & I_NEW))
return ip;
vip = __vxfs_iget(ino, VXFS_SBI(sbp)->vsi_ilist);
if (IS_ERR(vip)) {
iget_failed(ip);
return ERR_CAST(vip);
}
vxfs_iinit(ip, vip);
if (VXFS_ISIMMED(vip))
aops = &vxfs_immed_aops;
else
aops = &vxfs_aops;
if (S_ISREG(ip->i_mode)) {
ip->i_fop = &generic_ro_fops;
ip->i_mapping->a_ops = aops;
} else if (S_ISDIR(ip->i_mode)) {
ip->i_op = &vxfs_dir_inode_ops;
ip->i_fop = &vxfs_dir_operations;
ip->i_mapping->a_ops = aops;
} else if (S_ISLNK(ip->i_mode)) {
if (!VXFS_ISIMMED(vip)) {
ip->i_op = &page_symlink_inode_operations;
inode_nohighmem(ip);
ip->i_mapping->a_ops = &vxfs_aops;
} else {
ip->i_op = &simple_symlink_inode_operations;
ip->i_link = vip->vii_immed.vi_immed;
nd_terminate_link(ip->i_link, ip->i_size,
sizeof(vip->vii_immed.vi_immed) - 1);
}
} else
init_special_inode(ip, ip->i_mode, old_decode_dev(vip->vii_rdev));
unlock_new_inode(ip);
return ip;
}
int nilfs_sufile_read(struct super_block *sb, size_t susize,
struct nilfs_inode *raw_inode, struct inode **inodep)
{
struct inode *sufile;
struct nilfs_sufile_info *sui;
struct buffer_head *header_bh;
struct nilfs_sufile_header *header;
void *kaddr;
int err;
sufile = nilfs_iget_locked(sb, NULL, NILFS_SUFILE_INO);
if (unlikely(!sufile))
return -ENOMEM;
if (!(sufile->i_state & I_NEW))
goto out;
err = nilfs_mdt_init(sufile, NILFS_MDT_GFP, sizeof(*sui));
if (err)
goto failed;
nilfs_mdt_set_entry_size(sufile, susize,
sizeof(struct nilfs_sufile_header));
err = nilfs_read_inode_common(sufile, raw_inode);
if (err)
goto failed;
err = nilfs_sufile_get_header_block(sufile, &header_bh);
if (err)
goto failed;
sui = NILFS_SUI(sufile);
kaddr = kmap_atomic(header_bh->b_page);
header = kaddr + bh_offset(header_bh);
sui->ncleansegs = le64_to_cpu(header->sh_ncleansegs);
kunmap_atomic(kaddr);
brelse(header_bh);
sui->allocmax = nilfs_sufile_get_nsegments(sufile) - 1;
sui->allocmin = 0;
unlock_new_inode(sufile);
out:
*inodep = sufile;
return 0;
failed:
iget_failed(sufile);
return err;
}
struct inode *sfs_iget(struct super_block *sb, ino_t ino)
{
struct sfs_sb_info *sbi = SFS_SB(sb);
struct buffer_head *bh;
struct sfs_inode *di;
struct sfs_inode_info *si;
struct inode *inode;
size_t block, offset;
inode = iget_locked(sb, ino);
if (!inode)
return ERR_PTR(-ENOMEM);
if (!(inode->i_state & I_NEW))
return inode;
si = SFS_INODE(inode);
block = sfs_inode_block(sbi, ino);
offset = sfs_inode_offset(sbi, ino);
pr_debug("sfs reads inode %lu from %lu block with offset %lu\n",
(unsigned long)ino, (unsigned long)block,
(unsigned long)offset);
bh = sb_bread(sb, block);
if (!bh) {
pr_err("cannot read block %lu\n", (unsigned long)block);
goto read_error;
}
di = (struct sfs_inode *)(bh->b_data + offset);
sfs_inode_fill(si, di);
brelse(bh);
sfs_set_inode(inode, new_decode_dev(le32_to_cpu(si->blkaddr[0])));
unlock_new_inode(inode);
return inode;
read_error:
pr_err("sfs cannot read inode %lu\n", (unsigned long)ino);
iget_failed(inode);
return ERR_PTR(-EIO);
}
struct inode *jfs_iget(struct super_block *sb, unsigned long ino)
{
struct inode *inode;
int ret;
inode = iget_locked(sb, ino);
if (!inode)
return ERR_PTR(-ENOMEM);
if (!(inode->i_state & I_NEW))
return inode;
ret = diRead(inode);
if (ret < 0) {
iget_failed(inode);
return ERR_PTR(ret);
}
if (S_ISREG(inode->i_mode)) {
inode->i_op = &jfs_file_inode_operations;
inode->i_fop = &jfs_file_operations;
inode->i_mapping->a_ops = &jfs_aops;
} else if (S_ISDIR(inode->i_mode)) {
inode->i_op = &jfs_dir_inode_operations;
inode->i_fop = &jfs_dir_operations;
} else if (S_ISLNK(inode->i_mode)) {
if (inode->i_size >= IDATASIZE) {
inode->i_op = &page_symlink_inode_operations;
inode_nohighmem(inode);
inode->i_mapping->a_ops = &jfs_aops;
} else {
inode->i_op = &jfs_fast_symlink_inode_operations;
inode->i_link = JFS_IP(inode)->i_inline;
/*
* The inline data should be null-terminated, but
* don't let on-disk corruption crash the kernel
*/
inode->i_link[inode->i_size] = '\0';
}
} else {
inode->i_op = &jfs_file_inode_operations;
init_special_inode(inode, inode->i_mode, inode->i_rdev);
}
unlock_new_inode(inode);
return inode;
}
struct inode *nilfs_iget(struct super_block *sb, unsigned long ino)
{
struct inode *inode;
int err;
inode = iget_locked(sb, ino);
if (unlikely(!inode))
return ERR_PTR(-ENOMEM);
if (!(inode->i_state & I_NEW))
return inode;
err = __nilfs_read_inode(sb, ino, inode);
if (unlikely(err)) {
iget_failed(inode);
return ERR_PTR(err);
}
unlock_new_inode(inode);
return inode;
}
/**
* nilfs_cpfile_read - read or get cpfile inode
* @sb: super block instance
* @cpsize: size of a checkpoint entry
* @raw_inode: on-disk cpfile inode
* @inodep: buffer to store the inode
*/
int nilfs_cpfile_read(struct super_block *sb, size_t cpsize,
struct nilfs_inode *raw_inode, struct inode **inodep)
{
struct inode *cpfile;
int err;
if (cpsize > sb->s_blocksize) {
printk(KERN_ERR
"NILFS: too large checkpoint size: %zu bytes.\n",
cpsize);
return -EINVAL;
} else if (cpsize < NILFS_MIN_CHECKPOINT_SIZE) {
printk(KERN_ERR
"NILFS: too small checkpoint size: %zu bytes.\n",
cpsize);
return -EINVAL;
}
cpfile = nilfs_iget_locked(sb, NULL, NILFS_CPFILE_INO);
if (unlikely(!cpfile))
return -ENOMEM;
if (!(cpfile->i_state & I_NEW))
goto out;
err = nilfs_mdt_init(cpfile, NILFS_MDT_GFP, 0);
if (err)
goto failed;
nilfs_mdt_set_entry_size(cpfile, cpsize,
sizeof(struct nilfs_cpfile_header));
err = nilfs_read_inode_common(cpfile, raw_inode);
if (err)
goto failed;
unlock_new_inode(cpfile);
out:
*inodep = cpfile;
return 0;
failed:
iget_failed(cpfile);
return err;
}
/* gets root inode */
struct inode *cifs_iget(struct super_block *sb, unsigned long ino)
{
int xid;
struct cifs_sb_info *cifs_sb;
struct inode *inode;
long rc;
inode = iget_locked(sb, ino);
if (!inode)
return ERR_PTR(-ENOMEM);
if (!(inode->i_state & I_NEW))
return inode;
cifs_sb = CIFS_SB(inode->i_sb);
xid = GetXid();
if (cifs_sb->tcon->unix_ext)
rc = cifs_get_inode_info_unix(&inode, "", inode->i_sb, xid);
else
rc = cifs_get_inode_info(&inode, "", NULL, inode->i_sb, xid,
NULL);
if (rc && cifs_sb->tcon->ipc) {
cFYI(1, ("ipc connection - fake read inode"));
inode->i_mode |= S_IFDIR;
inode->i_nlink = 2;
inode->i_op = &cifs_ipc_inode_ops;
inode->i_fop = &simple_dir_operations;
inode->i_uid = cifs_sb->mnt_uid;
inode->i_gid = cifs_sb->mnt_gid;
} else if (rc) {
_FreeXid(xid);
iget_failed(inode);
return ERR_PTR(rc);
}
unlock_new_inode(inode);
/* can not call macro FreeXid here since in a void func
* TODO: This is no longer true
*/
_FreeXid(xid);
return inode;
}
static int f2fs_create(struct inode *dir, struct dentry *dentry, umode_t mode,
struct nameidata *nd)
{
struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
struct inode *inode;
nid_t ino = 0;
int err;
f2fs_balance_fs(sbi);
inode = f2fs_new_inode(dir, mode);
if (IS_ERR(inode))
return PTR_ERR(inode);
if (!test_opt(sbi, DISABLE_EXT_IDENTIFY))
set_cold_files(sbi, inode, dentry->d_name.name);
inode->i_op = &f2fs_file_inode_operations;
inode->i_fop = &f2fs_file_operations;
inode->i_mapping->a_ops = &f2fs_dblock_aops;
ino = inode->i_ino;
f2fs_lock_op(sbi);
err = f2fs_add_link(dentry, inode);
f2fs_unlock_op(sbi);
if (err)
goto out;
alloc_nid_done(sbi, ino);
d_instantiate(dentry, inode);
unlock_new_inode(inode);
return 0;
out:
clear_nlink(inode);
iget_failed(inode);
alloc_nid_failed(sbi, ino);
return err;
}
struct inode *squashfs_iget(struct super_block *sb, long long ino,
unsigned int ino_number)
{
struct inode *inode = iget_locked(sb, ino_number);
int err;
TRACE("Entered squashfs_iget\n");
if (!inode)
return ERR_PTR(-ENOMEM);
if (!(inode->i_state & I_NEW))
return inode;
err = squashfs_read_inode(inode, ino);
if (err) {
iget_failed(inode);
return ERR_PTR(err);
}
unlock_new_inode(inode);
return inode;
}
/**
* nilfs_dat_read - read or get dat inode
* @sb: super block instance
* @entry_size: size of a dat entry
* @raw_inode: on-disk dat inode
* @inodep: buffer to store the inode
*/
int nilfs_dat_read(struct super_block *sb, size_t entry_size,
struct nilfs_inode *raw_inode, struct inode **inodep)
{
static struct lock_class_key dat_lock_key;
struct inode *dat;
struct nilfs_dat_info *di;
int err;
dat = nilfs_iget_locked(sb, NULL, NILFS_DAT_INO);
if (unlikely(!dat))
return -ENOMEM;
if (!(dat->i_state & I_NEW))
goto out;
err = nilfs_mdt_init(dat, NILFS_MDT_GFP, sizeof(*di));
if (err)
goto failed;
err = nilfs_palloc_init_blockgroup(dat, entry_size);
if (err)
goto failed;
di = NILFS_DAT_I(dat);
lockdep_set_class(&di->mi.mi_sem, &dat_lock_key);
nilfs_palloc_setup_cache(dat, &di->palloc_cache);
nilfs_mdt_setup_shadow_map(dat, &di->shadow);
err = nilfs_read_inode_common(dat, raw_inode);
if (err)
goto failed;
unlock_new_inode(dat);
out:
*inodep = dat;
return 0;
failed:
iget_failed(dat);
return err;
}
struct inode *hfsplus_iget(struct super_block *sb, unsigned long ino)
{
struct hfs_find_data fd;
struct inode *inode;
int err;
inode = iget_locked(sb, ino);
if (!inode)
return ERR_PTR(-ENOMEM);
if (!(inode->i_state & I_NEW))
return inode;
INIT_LIST_HEAD(&HFSPLUS_I(inode)->open_dir_list);
mutex_init(&HFSPLUS_I(inode)->extents_lock);
HFSPLUS_I(inode)->flags = 0;
HFSPLUS_I(inode)->extent_state = 0;
HFSPLUS_I(inode)->rsrc_inode = NULL;
atomic_set(&HFSPLUS_I(inode)->opencnt, 0);
if (inode->i_ino >= HFSPLUS_FIRSTUSER_CNID ||
inode->i_ino == HFSPLUS_ROOT_CNID) {
hfs_find_init(HFSPLUS_SB(inode->i_sb)->cat_tree, &fd);
err = hfsplus_find_cat(inode->i_sb, inode->i_ino, &fd);
if (!err)
err = hfsplus_cat_read_inode(inode, &fd);
hfs_find_exit(&fd);
} else {
err = hfsplus_system_read_inode(inode);
}
if (err) {
iget_failed(inode);
return ERR_PTR(err);
}
unlock_new_inode(inode);
return inode;
}
/**
* nilfs_ifile_read - read or get ifile inode
* @sb: super block instance
* @root: root object
* @inode_size: size of an inode
* @raw_inode: on-disk ifile inode
* @inodep: buffer to store the inode
*/
int nilfs_ifile_read(struct super_block *sb, struct nilfs_root *root,
size_t inode_size, struct nilfs_inode *raw_inode,
struct inode **inodep)
{
struct inode *ifile;
int err;
ifile = nilfs_iget_locked(sb, root, NILFS_IFILE_INO);
if (unlikely(!ifile))
return -ENOMEM;
if (!(ifile->i_state & I_NEW))
goto out;
err = nilfs_mdt_init(ifile, NILFS_MDT_GFP,
sizeof(struct nilfs_ifile_info));
if (err)
goto failed;
err = nilfs_palloc_init_blockgroup(ifile, inode_size);
if (err)
goto failed;
nilfs_palloc_setup_cache(ifile, &NILFS_IFILE_I(ifile)->palloc_cache);
err = nilfs_read_inode_common(ifile, raw_inode);
if (err)
goto failed;
unlock_new_inode(ifile);
out:
*inodep = ifile;
return 0;
failed:
iget_failed(ifile);
return err;
}
struct inode *bfs_iget(struct super_block *sb, unsigned long ino)
{
struct bfs_inode *di;
struct inode *inode;
struct buffer_head *bh;
int block, off;
inode = iget_locked(sb, ino);
if (IS_ERR(inode))
return ERR_PTR(-ENOMEM);
if (!(inode->i_state & I_NEW))
return inode;
if ((ino < BFS_ROOT_INO) || (ino > BFS_SB(inode->i_sb)->si_lasti)) {
printf("Bad inode number %s:%08lx\n", inode->i_sb->s_id, ino);
goto error;
}
block = (ino - BFS_ROOT_INO) / BFS_INODES_PER_BLOCK + 1;
bh = sb_bread(inode->i_sb, block);
if (!bh) {
printf("Unable to read inode %s:%08lx\n", inode->i_sb->s_id,
ino);
goto error;
}
off = (ino - BFS_ROOT_INO) % BFS_INODES_PER_BLOCK;
di = (struct bfs_inode *)bh->b_data + off;
inode->i_mode = 0x0000FFFF & le32_to_cpu(di->i_mode);
if (le32_to_cpu(di->i_vtype) == BFS_VDIR) {
inode->i_mode |= S_IFDIR;
inode->i_op = &bfs_dir_inops;
inode->i_fop = &bfs_dir_operations;
} else if (le32_to_cpu(di->i_vtype) == BFS_VREG) {
inode->i_mode |= S_IFREG;
inode->i_op = &bfs_file_inops;
inode->i_fop = &bfs_file_operations;
inode->i_mapping->a_ops = &bfs_aops;
}
BFS_I(inode)->i_sblock = le32_to_cpu(di->i_sblock);
BFS_I(inode)->i_eblock = le32_to_cpu(di->i_eblock);
BFS_I(inode)->i_dsk_ino = le16_to_cpu(di->i_ino);
inode->i_uid = le32_to_cpu(di->i_uid);
inode->i_gid = le32_to_cpu(di->i_gid);
inode->i_nlink = le32_to_cpu(di->i_nlink);
inode->i_size = BFS_FILESIZE(di);
inode->i_blocks = BFS_FILEBLOCKS(di);
inode->i_atime.tv_sec = le32_to_cpu(di->i_atime);
inode->i_mtime.tv_sec = le32_to_cpu(di->i_mtime);
inode->i_ctime.tv_sec = le32_to_cpu(di->i_ctime);
inode->i_atime.tv_nsec = 0;
inode->i_mtime.tv_nsec = 0;
inode->i_ctime.tv_nsec = 0;
brelse(bh);
unlock_new_inode(inode);
return inode;
error:
iget_failed(inode);
return ERR_PTR(-EIO);
}
struct inode *nilfs_ilookup(struct super_block *sb, struct nilfs_root *root,
unsigned long ino)
{
struct nilfs_iget_args args = {
.ino = ino, .root = root, .cno = 0, .for_gc = 0
};
return ilookup5(sb, ino, nilfs_iget_test, &args);
}
struct inode *nilfs_iget_locked(struct super_block *sb, struct nilfs_root *root,
unsigned long ino)
{
struct nilfs_iget_args args = {
.ino = ino, .root = root, .cno = 0, .for_gc = 0
};
return iget5_locked(sb, ino, nilfs_iget_test, nilfs_iget_set, &args);
}
struct inode *nilfs_iget(struct super_block *sb, struct nilfs_root *root,
unsigned long ino)
{
struct inode *inode;
int err;
inode = nilfs_iget_locked(sb, root, ino);
if (unlikely(!inode))
return ERR_PTR(-ENOMEM);
if (!(inode->i_state & I_NEW))
return inode;
err = __nilfs_read_inode(sb, root, ino, inode);
if (unlikely(err)) {
iget_failed(inode);
return ERR_PTR(err);
}
unlock_new_inode(inode);
return inode;
}
struct inode *nilfs_iget_for_gc(struct super_block *sb, unsigned long ino,
__u64 cno)
{
struct nilfs_iget_args args = {
.ino = ino, .root = NULL, .cno = cno, .for_gc = 1
};
struct inode *inode;
int err;
inode = iget5_locked(sb, ino, nilfs_iget_test, nilfs_iget_set, &args);
if (unlikely(!inode))
return ERR_PTR(-ENOMEM);
if (!(inode->i_state & I_NEW))
return inode;
err = nilfs_init_gcinode(inode);
if (unlikely(err)) {
iget_failed(inode);
return ERR_PTR(err);
}
unlock_new_inode(inode);
return inode;
}
void nilfs_write_inode_common(struct inode *inode,
struct nilfs_inode *raw_inode, int has_bmap)
{
struct nilfs_inode_info *ii = NILFS_I(inode);
raw_inode->i_mode = cpu_to_le16(inode->i_mode);
raw_inode->i_uid = cpu_to_le32(inode->i_uid);
raw_inode->i_gid = cpu_to_le32(inode->i_gid);
raw_inode->i_links_count = cpu_to_le16(inode->i_nlink);
raw_inode->i_size = cpu_to_le64(inode->i_size);
raw_inode->i_ctime = cpu_to_le64(inode->i_ctime.tv_sec);
raw_inode->i_mtime = cpu_to_le64(inode->i_mtime.tv_sec);
raw_inode->i_ctime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec);
raw_inode->i_mtime_nsec = cpu_to_le32(inode->i_mtime.tv_nsec);
raw_inode->i_blocks = cpu_to_le64(inode->i_blocks);
raw_inode->i_flags = cpu_to_le32(ii->i_flags);
raw_inode->i_generation = cpu_to_le32(inode->i_generation);
if (NILFS_ROOT_METADATA_FILE(inode->i_ino)) {
struct the_nilfs *nilfs = inode->i_sb->s_fs_info;
/* zero-fill unused portion in the case of super root block */
raw_inode->i_xattr = 0;
raw_inode->i_pad = 0;
memset((void *)raw_inode + sizeof(*raw_inode), 0,
nilfs->ns_inode_size - sizeof(*raw_inode));
}
if (has_bmap)
nilfs_bmap_write(ii->i_bmap, raw_inode);
else if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode))
raw_inode->i_device_code =
cpu_to_le64(huge_encode_dev(inode->i_rdev));
/* When extending inode, nilfs->ns_inode_size should be checked
for substitutions of appended fields */
}
void nilfs_update_inode(struct inode *inode, struct buffer_head *ibh)
{
ino_t ino = inode->i_ino;
struct nilfs_inode_info *ii = NILFS_I(inode);
struct inode *ifile = ii->i_root->ifile;
struct nilfs_inode *raw_inode;
raw_inode = nilfs_ifile_map_inode(ifile, ino, ibh);
if (test_and_clear_bit(NILFS_I_NEW, &ii->i_state))
memset(raw_inode, 0, NILFS_MDT(ifile)->mi_entry_size);
set_bit(NILFS_I_INODE_DIRTY, &ii->i_state);
nilfs_write_inode_common(inode, raw_inode, 0);
/* XXX: call with has_bmap = 0 is a workaround to avoid
deadlock of bmap. This delays update of i_bmap to just
before writing */
nilfs_ifile_unmap_inode(ifile, ino, ibh);
}
#define NILFS_MAX_TRUNCATE_BLOCKS 16384 /* 64MB for 4KB block */
static void nilfs_truncate_bmap(struct nilfs_inode_info *ii,
unsigned long from)
{
unsigned long b;
int ret;
if (!test_bit(NILFS_I_BMAP, &ii->i_state))
return;
repeat:
ret = nilfs_bmap_last_key(ii->i_bmap, &b);
if (ret == -ENOENT)
return;
else if (ret < 0)
goto failed;
if (b < from)
return;
b -= min_t(unsigned long, NILFS_MAX_TRUNCATE_BLOCKS, b - from);
ret = nilfs_bmap_truncate(ii->i_bmap, b);
nilfs_relax_pressure_in_lock(ii->vfs_inode.i_sb);
if (!ret || (ret == -ENOMEM &&
nilfs_bmap_truncate(ii->i_bmap, b) == 0))
goto repeat;
failed:
nilfs_warning(ii->vfs_inode.i_sb, __func__,
"failed to truncate bmap (ino=%lu, err=%d)",
ii->vfs_inode.i_ino, ret);
}
void nilfs_truncate(struct inode *inode)
{
unsigned long blkoff;
unsigned int blocksize;
struct nilfs_transaction_info ti;
struct super_block *sb = inode->i_sb;
struct nilfs_inode_info *ii = NILFS_I(inode);
if (!test_bit(NILFS_I_BMAP, &ii->i_state))
return;
if (IS_APPEND(inode) || IS_IMMUTABLE(inode))
return;
blocksize = sb->s_blocksize;
blkoff = (inode->i_size + blocksize - 1) >> sb->s_blocksize_bits;
nilfs_transaction_begin(sb, &ti, 0); /* never fails */
block_truncate_page(inode->i_mapping, inode->i_size, nilfs_get_block);
nilfs_truncate_bmap(ii, blkoff);
inode->i_mtime = inode->i_ctime = CURRENT_TIME;
if (IS_SYNC(inode))
nilfs_set_transaction_flag(NILFS_TI_SYNC);
nilfs_mark_inode_dirty(inode);
nilfs_set_file_dirty(inode, 0);
nilfs_transaction_commit(sb);
/* May construct a logical segment and may fail in sync mode.
But truncate has no return value. */
}
/*
* get the VFS inode from the inode cache, if missed, add a new one into
* the cache and fill it with information retrieved from disk
*
* @vsb: the VFS super block structure
* @inode_no: inode number
*
* return: a pointer to the VFS inode on success, error code otherwise
*/
struct inode * wtfs_iget(struct super_block * vsb, uint64_t inode_no)
{
struct wtfs_sb_info * sbi = WTFS_SB_INFO(vsb);
struct inode * vi = NULL;
struct wtfs_inode * inode = NULL;
struct wtfs_inode_info * info = NULL;
struct buffer_head * bh = NULL;
int ret = -EINVAL;
/* get inode in cache */
vi = iget_locked(vsb, (unsigned long)inode_no);
if (vi == NULL) {
wtfs_error("unable to get the inode of number %llu\n",
inode_no);
ret = -ENOMEM;
goto error;
}
info = WTFS_INODE_INFO(vi);
/* inode already in cache */
if (!(vi->i_state & I_NEW)) {
return vi;
}
/*
* inode missed in cache, then we retrieve corresponding physical inode
* from disk and fill the VFS inode
*/
inode = wtfs_get_inode(vsb, inode_no, &bh);
if (IS_ERR(inode)) {
ret = PTR_ERR(inode);
goto error;
}
/* now let's fill the VFS inode */
vi->i_ino = (unsigned long)wtfs64_to_cpu(inode->inode_no);
vi->i_mode = (umode_t)wtfs32_to_cpu(inode->mode);
vi->i_blocks = (blkcnt_t)wtfs64_to_cpu(inode->block_count);
vi->i_atime.tv_sec = (__kernel_time_t)wtfs64_to_cpu(inode->atime);
vi->i_ctime.tv_sec = (__kernel_time_t)wtfs64_to_cpu(inode->ctime);
vi->i_mtime.tv_sec = (__kernel_time_t)wtfs64_to_cpu(inode->mtime);
vi->i_atime.tv_nsec = 0;
vi->i_ctime.tv_nsec = 0;
vi->i_mtime.tv_nsec = 0;
i_uid_write(vi, wtfs16_to_cpu(inode->uid));
i_gid_write(vi, wtfs16_to_cpu(inode->gid));
info->first_block = wtfs64_to_cpu(inode->first_block);
switch (vi->i_mode & S_IFMT) {
case S_IFDIR:
i_size_write(vi, wtfs64_to_cpu(inode->block_count) *
sbi->block_size);
vi->i_op = &wtfs_dir_inops;
vi->i_fop = &wtfs_dir_ops;
info->dir_entry_count = wtfs64_to_cpu(inode->dir_entry_count);
break;
case S_IFREG:
i_size_write(vi, wtfs64_to_cpu(inode->file_size));
vi->i_op = &wtfs_file_inops;
vi->i_fop = &wtfs_file_ops;
break;
case S_IFLNK:
i_size_write(vi, wtfs64_to_cpu(inode->file_size));
vi->i_op = &wtfs_symlink_inops;
break;
default:
wtfs_error("special file type not supported\n");
goto error;
}
/* finally release the buffer and unlock the new VFS inode */
brelse(bh);
unlock_new_inode(vi);
return vi;
error:
if (bh != NULL) {
brelse(bh);
}
if (vi != NULL) {
iget_failed(vi);
}
return ERR_PTR(ret);
}
static int jffs2_mknod (struct inode *dir_i, struct dentry *dentry, int mode, dev_t rdev)
{
struct jffs2_inode_info *f, *dir_f;
struct jffs2_sb_info *c;
struct inode *inode;
struct jffs2_raw_inode *ri;
struct jffs2_raw_dirent *rd;
struct jffs2_full_dnode *fn;
struct jffs2_full_dirent *fd;
int namelen;
union jffs2_device_node dev;
int devlen = 0;
uint32_t alloclen;
int ret;
if (!new_valid_dev(rdev))
return -EINVAL;
ri = jffs2_alloc_raw_inode();
if (!ri)
return -ENOMEM;
c = JFFS2_SB_INFO(dir_i->i_sb);
if (S_ISBLK(mode) || S_ISCHR(mode))
devlen = jffs2_encode_dev(&dev, rdev);
/* Try to reserve enough space for both node and dirent.
* Just the node will do for now, though
*/
namelen = dentry->d_name.len;
ret = jffs2_reserve_space(c, sizeof(*ri) + devlen, &alloclen,
ALLOC_NORMAL, JFFS2_SUMMARY_INODE_SIZE);
if (ret) {
jffs2_free_raw_inode(ri);
return ret;
}
inode = jffs2_new_inode(dir_i, mode, ri);
if (IS_ERR(inode)) {
jffs2_free_raw_inode(ri);
jffs2_complete_reservation(c);
return PTR_ERR(inode);
}
inode->i_op = &jffs2_file_inode_operations;
init_special_inode(inode, inode->i_mode, rdev);
f = JFFS2_INODE_INFO(inode);
ri->dsize = ri->csize = cpu_to_je32(devlen);
ri->totlen = cpu_to_je32(sizeof(*ri) + devlen);
ri->hdr_crc = cpu_to_je32(crc32(0, ri, sizeof(struct jffs2_unknown_node)-4));
ri->compr = JFFS2_COMPR_NONE;
ri->data_crc = cpu_to_je32(crc32(0, &dev, devlen));
ri->node_crc = cpu_to_je32(crc32(0, ri, sizeof(*ri)-8));
fn = jffs2_write_dnode(c, f, ri, (char *)&dev, devlen, ALLOC_NORMAL);
jffs2_free_raw_inode(ri);
if (IS_ERR(fn)) {
/* Eeek. Wave bye bye */
mutex_unlock(&f->sem);
jffs2_complete_reservation(c);
ret = PTR_ERR(fn);
goto fail;
}
/* No data here. Only a metadata node, which will be
obsoleted by the first data write
*/
f->metadata = fn;
mutex_unlock(&f->sem);
jffs2_complete_reservation(c);
ret = jffs2_init_security(inode, dir_i, &dentry->d_name);
if (ret)
goto fail;
ret = jffs2_init_acl_post(inode);
if (ret)
goto fail;
ret = jffs2_reserve_space(c, sizeof(*rd)+namelen, &alloclen,
ALLOC_NORMAL, JFFS2_SUMMARY_DIRENT_SIZE(namelen));
if (ret)
goto fail;
rd = jffs2_alloc_raw_dirent();
if (!rd) {
/* Argh. Now we treat it like a normal delete */
jffs2_complete_reservation(c);
ret = -ENOMEM;
goto fail;
}
dir_f = JFFS2_INODE_INFO(dir_i);
mutex_lock(&dir_f->sem);
rd->magic = cpu_to_je16(JFFS2_MAGIC_BITMASK);
rd->nodetype = cpu_to_je16(JFFS2_NODETYPE_DIRENT);
rd->totlen = cpu_to_je32(sizeof(*rd) + namelen);
rd->hdr_crc = cpu_to_je32(crc32(0, rd, sizeof(struct jffs2_unknown_node)-4));
rd->pino = cpu_to_je32(dir_i->i_ino);
rd->version = cpu_to_je32(++dir_f->highest_version);
rd->ino = cpu_to_je32(inode->i_ino);
rd->mctime = cpu_to_je32(get_seconds());
rd->nsize = namelen;
/* XXX: This is ugly. */
rd->type = (mode & S_IFMT) >> 12;
rd->node_crc = cpu_to_je32(crc32(0, rd, sizeof(*rd)-8));
rd->name_crc = cpu_to_je32(crc32(0, dentry->d_name.name, namelen));
fd = jffs2_write_dirent(c, dir_f, rd, dentry->d_name.name, namelen, ALLOC_NORMAL);
if (IS_ERR(fd)) {
/* dirent failed to write. Delete the inode normally
as if it were the final unlink() */
jffs2_complete_reservation(c);
jffs2_free_raw_dirent(rd);
mutex_unlock(&dir_f->sem);
ret = PTR_ERR(fd);
goto fail;
}
dir_i->i_mtime = dir_i->i_ctime = ITIME(je32_to_cpu(rd->mctime));
jffs2_free_raw_dirent(rd);
/* Link the fd into the inode's list, obsoleting an old
one if necessary. */
jffs2_add_fd_to_list(c, fd, &dir_f->dents);
mutex_unlock(&dir_f->sem);
jffs2_complete_reservation(c);
d_instantiate(dentry, inode);
unlock_new_inode(inode);
return 0;
fail:
iget_failed(inode);
return ret;
}
/* todo: return with unlocked? */
struct inode *au_new_inode(struct dentry *dentry, int must_new)
{
struct inode *inode;
struct dentry *h_dentry;
struct super_block *sb;
ino_t h_ino, ino;
int err, match;
aufs_bindex_t bstart;
sb = dentry->d_sb;
bstart = au_dbstart(dentry);
h_dentry = au_h_dptr(dentry, bstart);
h_ino = h_dentry->d_inode->i_ino;
err = au_xino_read(sb, bstart, h_ino, &ino);
inode = ERR_PTR(err);
if (unlikely(err))
goto out;
new_ino:
if (!ino) {
ino = au_xino_new_ino(sb);
if (unlikely(!ino)) {
inode = ERR_PTR(-EIO);
goto out;
}
}
AuDbg("i%lu\n", (unsigned long)ino);
inode = au_iget_locked(sb, ino);
err = PTR_ERR(inode);
if (IS_ERR(inode))
goto out;
AuDbg("%lx, new %d\n", inode->i_state, !!(inode->i_state & I_NEW));
if (inode->i_state & I_NEW) {
ii_write_lock_new_child(inode);
err = set_inode(inode, dentry);
if (!err) {
unlock_new_inode(inode);
goto out; /* success */
}
ii_write_unlock(inode);
iget_failed(inode);
goto out_err;
} else if (!must_new) {
err = reval_inode(inode, dentry, &match);
if (!err)
goto out; /* success */
else if (match)
goto out_iput;
}
if (unlikely(au_test_fs_unique_ino(h_dentry->d_inode)))
AuWarn1("Warning: Un-notified UDBA or repeatedly renamed dir,"
" b%d, %s, %.*s, hi%lu, i%lu.\n",
bstart, au_sbtype(h_dentry->d_sb), AuDLNPair(dentry),
(unsigned long)h_ino, (unsigned long)ino);
ino = 0;
err = au_xino_write(sb, bstart, h_ino, /*ino*/0);
if (!err) {
iput(inode);
goto new_ino;
}
out_iput:
iput(inode);
out_err:
inode = ERR_PTR(err);
out:
return inode;
}
struct inode *gfs2_inode_lookup(struct super_block *sb,
unsigned int type,
u64 no_addr,
u64 no_formal_ino)
{
struct inode *inode;
struct gfs2_inode *ip;
struct gfs2_glock *io_gl = NULL;
int error;
inode = gfs2_iget(sb, no_addr);
ip = GFS2_I(inode);
if (!inode)
return ERR_PTR(-ENOBUFS);
if (inode->i_state & I_NEW) {
struct gfs2_sbd *sdp = GFS2_SB(inode);
ip->i_no_formal_ino = no_formal_ino;
error = gfs2_glock_get(sdp, no_addr, &gfs2_inode_glops, CREATE, &ip->i_gl);
if (unlikely(error))
goto fail;
ip->i_gl->gl_object = ip;
error = gfs2_glock_get(sdp, no_addr, &gfs2_iopen_glops, CREATE, &io_gl);
if (unlikely(error))
goto fail_put;
set_bit(GIF_INVALID, &ip->i_flags);
error = gfs2_glock_nq_init(io_gl, LM_ST_SHARED, GL_EXACT, &ip->i_iopen_gh);
if (unlikely(error))
goto fail_iopen;
ip->i_iopen_gh.gh_gl->gl_object = ip;
gfs2_glock_put(io_gl);
io_gl = NULL;
if ((type == DT_UNKNOWN) && (no_formal_ino == 0))
goto gfs2_nfsbypass;
inode->i_mode = DT2IF(type);
/*
* We must read the inode in order to work out its type in
* this case. Note that this doesn't happen often as we normally
* know the type beforehand. This code path only occurs during
* unlinked inode recovery (where it is safe to do this glock,
* which is not true in the general case).
*/
if (type == DT_UNKNOWN) {
struct gfs2_holder gh;
error = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, &gh);
if (unlikely(error))
goto fail_glock;
/* Inode is now uptodate */
gfs2_glock_dq_uninit(&gh);
}
gfs2_set_iop(inode);
}
gfs2_nfsbypass:
return inode;
fail_glock:
gfs2_glock_dq(&ip->i_iopen_gh);
fail_iopen:
if (io_gl)
gfs2_glock_put(io_gl);
fail_put:
if (inode->i_state & I_NEW)
ip->i_gl->gl_object = NULL;
gfs2_glock_put(ip->i_gl);
fail:
if (inode->i_state & I_NEW)
iget_failed(inode);
else
iput(inode);
return ERR_PTR(error);
}