int do_rmdir (struct inode *inode, const char *name, int len)
{
#if POST_20_KERNEL_F
struct dentry *tmp_dent;
#endif
int ret_code;
DOWN(&(inode->i_sem));
#if POST_20_KERNEL_F
/* Grab a dentry for the directory being removed. */
ret_code = ovlfs_inode_get_child_dentry(inode, name, len, &tmp_dent,
OVLFS_DENT_GET_POSITIVE);
if ( ret_code == 0 )
{
/* Use the vfs_rmdir function to do the dirty work. */
ret_code = vfs_rmdir(inode, tmp_dent);
dput(tmp_dent);
}
#else
IMARK(inode);
ret = inode->i_op->rmdir(inode, name, len);
#endif
UP(&(inode->i_sem));
return ret_code;
}
static int wrapfs_rmdir(struct inode *dir, struct dentry *dentry)
{
struct dentry *lower_dentry;
struct dentry *lower_dir_dentry;
int err;
struct path lower_path;
wrapfs_get_lower_path(dentry, &lower_path);
lower_dentry = lower_path.dentry;
lower_dir_dentry = lock_parent(lower_dentry);
err = vfs_rmdir(lower_dir_dentry->d_inode, lower_dentry);
if (err)
goto out;
d_drop(dentry); /* drop our dentry on success (why not VFS's job?) */
if (dentry->d_inode)
clear_nlink(dentry->d_inode);
fsstack_copy_attr_times(dir, lower_dir_dentry->d_inode);
fsstack_copy_inode_size(dir, lower_dir_dentry->d_inode);
set_nlink(dir, lower_dir_dentry->d_inode->i_nlink);
out:
unlock_dir(lower_dir_dentry);
wrapfs_put_lower_path(dentry, &lower_path);
#ifdef NEKTECH_LOGGER /*NEKTECH LOGGING*/
nektech_logger (dir, dentry, NEKTECH_RMDIR);
#endif /*NEKTECH LOGGING*/
return err;
}
static int ccfs_rmdir(struct inode *dir, struct dentry *dentry)
{
struct dentry *lower_dentry;
struct dentry *lower_dir_dentry;
int rc;
lower_dentry = ccfs_get_nested_dentry(dentry);
mdbg(INFO3,"RMDIR w/ lower_dentry->d_name.name = [%s]", lower_dentry->d_name.name);
dget(dentry);
lower_dir_dentry = lock_parent(lower_dentry);
dget(lower_dentry);
rc = vfs_rmdir(lower_dir_dentry->d_inode, lower_dentry);
dput(lower_dentry);
if (!rc)
d_delete(lower_dentry);
fsstack_copy_attr_times(dir, lower_dir_dentry->d_inode);
set_nlink(dir, lower_dir_dentry->d_inode->i_nlink); //Fix for kernel 3.7.1 use function set_nlink by Jiri Rakosnik
unlock_dir(lower_dir_dentry);
if (!rc)
d_drop(dentry);
dput(dentry);
return rc;
}
static int unionfs_rmdir_first(struct inode *dir, struct dentry *dentry,
struct unionfs_dir_state *namelist)
{
int err;
struct dentry *hidden_dentry;
struct dentry *hidden_dir_dentry = NULL;
/* Here we need to remove whiteout entries. */
err = delete_whiteouts(dentry, dbstart(dentry), namelist);
if (err)
goto out;
hidden_dentry = unionfs_lower_dentry(dentry);
hidden_dir_dentry = lock_parent(hidden_dentry);
/* avoid destroying the hidden inode if the file is in use */
dget(hidden_dentry);
if (!(err = is_robranch(dentry)))
err = vfs_rmdir(hidden_dir_dentry->d_inode, hidden_dentry);
dput(hidden_dentry);
fsstack_copy_attr_times(dir, hidden_dir_dentry->d_inode);
/* propagate number of hard-links */
dentry->d_inode->i_nlink = unionfs_get_nlinks(dentry->d_inode);
out:
if (hidden_dir_dentry)
unlock_dir(hidden_dir_dentry);
return err;
}
static int diaryfs_rmdir(struct inode * dir, struct dentry * dentry) {
int err;
struct dentry * lower_dentry;
struct dentry * lower_dir_dentry;
struct path lower_path;
diaryfs_get_lower_path(dentry, &lower_path);
lower_dentry = lower_path.dentry;
lower_dir_dentry = lock_parent(lower_dentry);
err = vfs_rmdir(lower_dir_dentry->d_inode, lower_dentry);
if (err)
goto out;
d_drop(dentry);
if (dentry->d_inode)
clear_nlink(dentry->d_inode);
fsstack_copy_attr_times(dir, lower_dir_dentry->d_inode);
fsstack_copy_inode_size(dir, lower_dir_dentry->d_inode);
set_nlink(dir, lower_dir_dentry->d_inode->i_nlink);
out:
unlock_dir(lower_dir_dentry);
diaryfs_put_lower_path(dentry, &lower_path);
return err;
}
static int dev_rmdir(const char *name)
{
struct nameidata nd;
struct dentry *dentry;
int err;
err = vfs_path_lookup(dev_mnt->mnt_root, dev_mnt,
name, LOOKUP_PARENT, &nd);
if (err)
return err;
mutex_lock_nested(&nd.path.dentry->d_inode->i_mutex, I_MUTEX_PARENT);
dentry = lookup_one_len(nd.last.name, nd.path.dentry, nd.last.len);
if (!IS_ERR(dentry)) {
if (dentry->d_inode) {
if (dentry->d_inode->i_private == &dev_mnt)
err = vfs_rmdir(nd.path.dentry->d_inode,
dentry);
else
err = -EPERM;
} else {
err = -ENOENT;
}
dput(dentry);
} else {
err = PTR_ERR(dentry);
}
mutex_unlock(&nd.path.dentry->d_inode->i_mutex);
path_put(&nd.path);
return err;
}
static int ecryptfs_rmdir(struct inode *dir, struct dentry *dentry)
{
struct dentry *lower_dentry;
struct dentry *lower_dir_dentry;
int rc;
#ifdef CONFIG_SDP
if(IS_CHAMBER_DENTRY(dentry)) {
printk("You're removing chamber directory. I/O error\n");
return -EIO;
}
#endif
lower_dentry = ecryptfs_dentry_to_lower(dentry);
dget(dentry);
lower_dir_dentry = lock_parent(lower_dentry);
dget(lower_dentry);
rc = vfs_rmdir(lower_dir_dentry->d_inode, lower_dentry);
dput(lower_dentry);
if (!rc && dentry->d_inode)
clear_nlink(dentry->d_inode);
fsstack_copy_attr_times(dir, lower_dir_dentry->d_inode);
set_nlink(dir, lower_dir_dentry->d_inode->i_nlink);
unlock_dir(lower_dir_dentry);
if (!rc)
d_drop(dentry);
dput(dentry);
return rc;
}
static void cmd_rmd(const char *arg, struct tcp_pcb *pcb, struct ftpd_msgstate *fsm)
{
vfs_stat_t st;
if (arg == NULL) {
send_msg(pcb, fsm, msg501);
return;
}
if (*arg == '\0') {
send_msg(pcb, fsm, msg501);
return;
}
if (vfs_stat(fsm->vfs, arg, &st) != 0) {
send_msg(pcb, fsm, msg550);
return;
}
if (!VFS_ISDIR(st.st_mode)) {
send_msg(pcb, fsm, msg550);
return;
}
if (vfs_rmdir(fsm->vfs, arg) != 0) {
send_msg(pcb, fsm, msg550);
} else {
send_msg(pcb, fsm, msg250);
}
}
static int wrapfs_rmdir(struct inode *dir, struct dentry *dentry)
{
struct dentry *lower_dentry;
struct dentry *lower_dir_dentry;
int err;
struct path lower_path;
wrapfs_get_lower_path(dentry, &lower_path);
lower_dentry = lower_path.dentry;
lower_dir_dentry = lock_parent(lower_dentry);
err = mnt_want_write(lower_path.mnt);
if (err)
goto out_unlock;
err = vfs_rmdir(lower_dir_dentry->d_inode, lower_dentry);
if (err)
goto out;
d_drop(dentry); /* drop our dentry on success (why not VFS's job?) */
if (dentry->d_inode)
clear_nlink(dentry->d_inode);
fsstack_copy_attr_times(dir, lower_dir_dentry->d_inode);
fsstack_copy_inode_size(dir, lower_dir_dentry->d_inode);
set_nlink(dir, lower_dir_dentry->d_inode->i_nlink);
out:
mnt_drop_write(lower_path.mnt);
out_unlock:
unlock_dir(lower_dir_dentry);
wrapfs_put_lower_path(dentry, &lower_path);
return err;
}
/* sys_rmdir
* Copies the given path into the kernel space, and call vfs_rmdir.
*/
int
sys_rmdir(userptr_t path) {
char *p;
int result;
if ((p = (char *)kmalloc(__PATH_MAX)) == NULL) {
return ENOMEM;
}
/* Copy in the path */
result = copyinstr(path, p, __PATH_MAX, NULL);
if (result) {
kfree(p);
return result;
}
/* Check that given path of directory is valid */
if (strcmp(p, ".") == 0 || strcmp(p, "..") == 0) {
kfree(p);
return EINVAL;
}
result = vfs_rmdir(p);
kfree(p);
return result;
}
static int sdcardfs_rmdir(struct inode *dir, struct dentry *dentry)
{
struct dentry *lower_dentry;
struct dentry *lower_dir_dentry;
int err;
struct path lower_path;
struct sdcardfs_sb_info *sbi = SDCARDFS_SB(dentry->d_sb);
const struct cred *saved_cred = NULL;
//char *path_s = NULL;
int has_rw = get_caller_has_rw_locked(sbi->pkgl_id, sbi->options.derive);
if(!check_caller_access_to_name(dir, dentry->d_name.name, sbi->options.derive, 1, has_rw)) {
printk(KERN_INFO "%s: need to check the caller's gid in packages.list\n"
" dentry: %s, task:%s\n",
__func__, dentry->d_name.name, current->comm);
err = -EACCES;
goto out_eacces;
}
/* save current_cred and override it */
OVERRIDE_CRED(SDCARDFS_SB(dir->i_sb), saved_cred);
/* sdcardfs_get_real_lower(): in case of remove an user's obb dentry
* the dentry on the original path should be deleted. */
sdcardfs_get_real_lower(dentry, &lower_path);
lower_dentry = lower_path.dentry;
lower_dir_dentry = lock_parent(lower_dentry);
sdcardfs_drop_shared_icache(dir->i_sb, lower_dentry->d_inode);
err = mnt_want_write(lower_path.mnt);
if (err)
goto out_unlock;
err = vfs_rmdir(lower_dir_dentry->d_inode, lower_dentry);
if (err)
goto out;
d_drop(dentry); /* drop our dentry on success (why not VFS's job?) */
if (dentry->d_inode)
clear_nlink(dentry->d_inode);
fsstack_copy_attr_times(dir, lower_dir_dentry->d_inode);
fsstack_copy_inode_size(dir, lower_dir_dentry->d_inode);
set_nlink(dir, lower_dir_dentry->d_inode->i_nlink);
out:
mnt_drop_write(lower_path.mnt);
out_unlock:
unlock_dir(lower_dir_dentry);
sdcardfs_put_real_lower(dentry, &lower_path);
REVERT_CRED(saved_cred);
out_eacces:
return err;
}
void
hwgfs_unregister(
hwgfs_handle_t de)
{
struct inode *parent_inode = de->d_parent->d_inode;
if (S_ISDIR(de->d_inode->i_mode))
vfs_rmdir(parent_inode, de);
else
vfs_unlink(parent_inode, de);
}
static int u2fs_rmdir(struct inode *dir, struct dentry *dentry)
{
struct dentry *lower_dentry;
struct dentry *lower_dir_dentry;
int err;
struct path lower_path;
/* creating whiteout if directory was in read-only */
if((U2FS_D(dentry)->lower_path[LEFT].dentry) == NULL &&
(U2FS_D(dentry)->lower_path[LEFT].mnt) == NULL){
err = create_whiteout(dentry);
if(err)
err = -EIO;
goto out_whiteout;
}
u2fs_get_lower_path(dentry, &lower_path, LEFT);
lower_dentry = lower_path.dentry;
lower_dir_dentry = lock_parent(lower_dentry);
err = mnt_want_write(lower_path.mnt);
if (err)
goto out_unlock;
err = vfs_rmdir(lower_dir_dentry->d_inode, lower_dentry);
if (err)
goto out;
if (dentry->d_inode)
clear_nlink(dentry->d_inode);
fsstack_copy_attr_times(dir, lower_dir_dentry->d_inode);
fsstack_copy_inode_size(dir, lower_dir_dentry->d_inode);
set_nlink(dir, lower_dir_dentry->d_inode->i_nlink);
out:
mnt_drop_write(lower_path.mnt);
out_unlock:
unlock_dir(lower_dir_dentry);
u2fs_put_lower_path(dentry, &lower_path);
/* creating whiteout if file as existing in both branches */
if((U2FS_D(dentry)->lower_path[RIGHT].dentry) != NULL &&
(U2FS_D(dentry)->lower_path[RIGHT].mnt) != NULL){
err = create_whiteout(dentry);
if(err)
err = -EIO;
}
d_drop(dentry);
out_whiteout:
return err;
}
static int
nfsd4_clear_clid_dir(struct dentry *dir, struct dentry *dentry)
{
int status;
/* For now this directory should already be empty, but we empty it of
* any regular files anyway, just in case the directory was created by
* a kernel from the future.... */
nfsd4_list_rec_dir(dentry, nfsd4_remove_clid_file);
mutex_lock_nested(&dir->d_inode->i_mutex, I_MUTEX_PARENT);
status = vfs_rmdir(dir->d_inode, dentry);
mutex_unlock(&dir->d_inode->i_mutex);
return status;
}
int remove_physical_dir (struct file *file)
{
struct dentry *dentry;
struct inode *dir;
int res = 0;
dentry = file->f_dentry;
dir = dentry->d_parent->d_inode;
res = vfs_rmdir (dir, dentry);
dput (dentry);
put_filp (file);
return res;
}
int do_vfsub_rmdir(struct inode *dir, struct dentry *dentry)
{
int err;
LKTRTrace("i%lu, %.*s\n", dir->i_ino, AuDLNPair(dentry));
IMustLock(dir);
lockdep_off();
err = vfs_rmdir(dir, dentry);
lockdep_on();
/* dir inode is locked */
if (!err)
au_update_fuse_h_inode(NULL, dentry->d_parent); /*ignore*/
return err;
}
static int rmdir(int argc, char *argv[])
{
if(argc != 2) {
printf("Usage: %s dir\n", argv[0]);
return 1;
}
char *path = vfs_path_mkabsolute(cwd, argv[1]);
errval_t err = vfs_rmdir(path);
free(path);
if (err_is_fail(err)) {
printf("%s\n", err_getstring(err));
return 1;
} else {
return 0;
}
}
int vfsub_rmdir(struct inode *dir, struct path *path)
{
int err;
struct dentry *d;
IMustLock(dir);
d = path->dentry;
path->dentry = d->d_parent;
err = security_path_rmdir(path, d);
path->dentry = d;
if (unlikely(err))
goto out;
lockdep_off();
err = vfs_rmdir(dir, path->dentry);
lockdep_on();
if (!err) {
struct path tmp = {
.dentry = path->dentry->d_parent,
.mnt = path->mnt
};
vfsub_update_h_iattr(&tmp, /*did*/NULL); /*ignore*/
}
out:
return err;
}
/* ---------------------------------------------------------------------- */
/* todo: support mmap_sem? */
ssize_t vfsub_read_u(struct file *file, char __user *ubuf, size_t count,
loff_t *ppos)
{
ssize_t err;
lockdep_off();
err = vfs_read(file, ubuf, count, ppos);
lockdep_on();
if (err >= 0)
vfsub_update_h_iattr(&file->f_path, /*did*/NULL); /*ignore*/
return err;
}
static int cmd_vfs_rmdir(struct vmm_chardev *cdev, const char *path)
{
int rc;
struct stat st;
rc = vfs_stat(path, &st);
if (rc) {
vmm_cprintf(cdev, "Path %s does not exist.\n", path);
return rc;
}
if (!(st.st_mode & S_IFDIR)) {
vmm_cprintf(cdev, "Path %s should be directory.\n", path);
return VMM_EINVALID;
}
return vfs_rmdir(path);
}
/*
* scfs_mkdir
*
* Parameters:
* @*dir: inode of the dir to create
* @*scfs_dentry: dentry of the dir to create
* @mode:
*
* Return:
* SCFS_SUCCESS if success, otherwise if error
*
* Description:
* mkdir() for SCFS.
*/
static int scfs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)
{
struct dentry *lower_dir_dentry;
struct dentry *lower_parent_dentry;
int ret;
SCFS_DEBUG_START;
lower_dir_dentry = scfs_lower_dentry(dentry);
lower_parent_dentry = lock_parent(lower_dir_dentry);
ret = vfs_mkdir(lower_parent_dentry->d_inode, lower_dir_dentry, mode);
if (ret || !lower_dir_dentry->d_inode) {
SCFS_PRINT_ERROR("dir %s vfs_mkdir failed, "
"lower_dir %s lower_parent %s mode %x\n",
dentry->d_name.name,
lower_dir_dentry->d_name.name,
lower_parent_dentry->d_name.name, mode);
goto out;
}
ret = scfs_interpose(lower_dir_dentry, dentry, dir->i_sb);
if (ret) {
SCFS_PRINT_ERROR("dir %s interpose failed, "
"lower_dir %s lower_parent %s mode %x\n",
dentry->d_name.name,
lower_dir_dentry->d_name.name,
lower_parent_dentry->d_name.name, mode);
vfs_rmdir(lower_parent_dentry->d_inode, lower_dir_dentry);
goto out;
}
fsstack_copy_attr_times(dir, lower_parent_dentry->d_inode);
fsstack_copy_inode_size(dir, lower_parent_dentry->d_inode);
set_nlink(dir, lower_parent_dentry->d_inode->i_nlink);
out:
unlock_dir(lower_parent_dentry);
if (!dentry->d_inode)
d_drop(dentry);
SCFS_DEBUG_END;
return ret;
}
static int esdfs_rmdir(struct inode *dir, struct dentry *dentry)
{
struct dentry *lower_dentry;
struct dentry *lower_dir_dentry;
int err;
struct path lower_path;
const struct cred *creds =
esdfs_override_creds(ESDFS_SB(dir->i_sb), NULL);
if (!creds)
return -ENOMEM;
/* Never remove a pseudo link target. Only the source. */
if (ESDFS_DENTRY_HAS_STUB(dentry))
esdfs_get_lower_stub_path(dentry, &lower_path);
else
esdfs_get_lower_path(dentry, &lower_path);
lower_dentry = lower_path.dentry;
lower_dir_dentry = lock_parent(lower_dentry);
err = mnt_want_write(lower_path.mnt);
if (err)
goto out_unlock;
err = vfs_rmdir(lower_dir_dentry->d_inode, lower_dentry);
if (err)
goto out;
d_drop(dentry); /* drop our dentry on success (why not VFS's job?) */
if (dentry->d_inode)
clear_nlink(dentry->d_inode);
fsstack_copy_attr_times(dir, lower_dir_dentry->d_inode);
fsstack_copy_inode_size(dir, lower_dir_dentry->d_inode);
set_nlink(dir, lower_dir_dentry->d_inode->i_nlink);
out:
mnt_drop_write(lower_path.mnt);
out_unlock:
unlock_dir(lower_dir_dentry);
esdfs_put_lower_path(dentry, &lower_path);
esdfs_revert_creds(creds, NULL);
return err;
}
static int unionfs_rmdir_first(struct inode *dir, struct dentry *dentry,
struct unionfs_dir_state *namelist)
{
int err;
struct dentry *hidden_dentry;
struct dentry *hidden_dir_dentry = NULL;
print_entry_location();
fist_print_dentry("IN unionfs_rmdir_first: ", dentry);
/* Here we need to remove whiteout entries. */
err = delete_whiteouts(dentry, dbstart(dentry), namelist);
if (err) {
goto out;
}
hidden_dentry = dtohd(dentry);
PASSERT(hidden_dentry);
hidden_dir_dentry = lock_parent(hidden_dentry);
/* avoid destroying the hidden inode if the file is in use */
DGET(hidden_dentry);
if (!(err = is_robranch(dentry))) {
err = vfs_rmdir(hidden_dir_dentry->d_inode, hidden_dentry);
}
DPUT(hidden_dentry);
fist_copy_attr_times(dir, hidden_dir_dentry->d_inode);
/* propagate number of hard-links */
dentry->d_inode->i_nlink = get_nlinks(dentry->d_inode);
out:
if (hidden_dir_dentry) {
unlock_dir(hidden_dir_dentry);
}
fist_print_dentry("OUT unionfs_rmdir_first: ", dentry);
print_exit_status(err);
return err;
}
static int ecryptfs_rmdir(struct inode *dir, struct dentry *dentry)
{
struct dentry *lower_dentry;
struct dentry *lower_dir_dentry;
int rc;
lower_dentry = ecryptfs_dentry_to_lower(dentry);
dget(dentry);
lower_dir_dentry = lock_parent(lower_dentry);
dget(lower_dentry);
rc = vfs_rmdir(lower_dir_dentry->d_inode, lower_dentry);
dput(lower_dentry);
if (!rc && dentry->d_inode)
clear_nlink(dentry->d_inode);
fsstack_copy_attr_times(dir, lower_dir_dentry->d_inode);
set_nlink(dir, lower_dir_dentry->d_inode->i_nlink);
unlock_dir(lower_dir_dentry);
if (!rc)
d_drop(dentry);
dput(dentry);
return rc;
}
static int dev_rmdir(const char *name)
{
struct path parent;
struct dentry *dentry;
int err;
dentry = kern_path_locked(name, &parent);
if (IS_ERR(dentry))
return PTR_ERR(dentry);
if (dentry->d_inode) {
if (dentry->d_inode->i_private == &thread)
err = vfs_rmdir(parent.dentry->d_inode, dentry);
else
err = -EPERM;
} else {
err = -ENOENT;
}
dput(dentry);
mutex_unlock(&parent.dentry->d_inode->i_mutex);
path_put(&parent);
return err;
}
//====================================================================
// Delete the given device directory. Returns 0 on success and
// non-zero on failure.
static int delete_dev_dir(const char *dev_dir_path) {
int err = 0;
struct path path;
unsigned int lookup_flags = LOOKUP_REVAL;
// Look up the path for this directory.
if ((err = kern_path(dev_dir_path, lookup_flags, &path)) != 0) {
return err;
}
if (!path.dentry || !path.dentry->d_parent) {
ALERT("Undelete device directory entry has no parent");
return -EINVAL;
}
if ((err = vfs_rmdir(path.dentry->d_parent->d_inode,
path.dentry)) != 0) {
return err;
}
return err;
}
int main(int argc, char *argv[])
{
errval_t err;
// initialization
vfs_init();
bench_init();
// mount nfs
err = vfs_mkdir("/nfs");
assert(err_is_ok(err));
err = vfs_mount("/nfs", "nfs://10.110.4.4/local/nfs");
assert(err_is_ok(err));
// argument processing
if (argc == 3) {
printf("Started vfs_bench in command-line mode\n");
int32_t chunksize = atol(argv[1]);
int32_t repetitions = atol(argv[2]);
single_run(chunksize, repetitions);
} else {
printf("Started vfs_bench.\n");
for (int32_t i = 1; i < 20; i++) {
single_run(4096, i * 2000);
}
}
//err = vfs_unmount("/nfs"); // unmount is NYI
//assert(err_is_ok(err));
err = vfs_rmdir("/nfs");
assert(err_is_ok(err));
return 0;
}
static int do_rmdir(int argc, char ** argv)
{
char fpath[VFS_MAX_PATH];
int ret = 0;
int i;
if(argc < 2)
{
usage();
return -1;
}
for(i = 1; i < argc; i++)
{
if(shell_realpath(argv[i], fpath) < 0)
continue;
if(vfs_rmdir(fpath) != 0)
{
ret = -1;
printf("mkdir: failed to remove directory %s\r\n", fpath);
}
}
return ret;
}
static int ecryptfs_rmdir(struct inode *dir, struct dentry *dentry)
{
struct dentry *lower_dentry;
struct vfsmount *lower_mnt;
struct dentry *lower_dir_dentry;
int rc;
lower_dentry = ecryptfs_dentry_to_lower(dentry);
lower_mnt = ecryptfs_dentry_to_lower_mnt(dentry);
dget(dentry);
lower_dir_dentry = lock_parent(lower_dentry);
dget(lower_dentry);
rc = vfs_rmdir(lower_dir_dentry->d_inode, lower_dentry, lower_mnt);
dput(lower_dentry);
if (!rc)
d_delete(lower_dentry);
fsstack_copy_attr_times(dir, lower_dir_dentry->d_inode);
dir->i_nlink = lower_dir_dentry->d_inode->i_nlink;
unlock_dir(lower_dir_dentry);
if (!rc)
d_drop(dentry);
dput(dentry);
return rc;
}
static int unionfs_rmdir_all(struct inode *dir, struct dentry *dentry,
struct unionfs_dir_state *namelist)
{
struct dentry *hidden_dentry;
struct dentry *hidden_dir_dentry;
int bstart, bend, bindex;
int err = 0;
int global_err = 0;
print_entry_location();
fist_print_dentry("IN unionfs_rmdir_all: ", dentry);
bstart = dbstart(dentry);
bend = dbend(dentry);
for (bindex = bend; bindex >= bstart; bindex--) {
hidden_dentry = dtohd_index(dentry, bindex);
if (!hidden_dentry)
continue;
hidden_dir_dentry = lock_parent(hidden_dentry);
if (S_ISDIR(hidden_dentry->d_inode->i_mode)) {
delete_whiteouts(dentry, bindex, namelist);
if (!(err = is_robranch_super(dentry->d_sb, bindex))) {
err =
vfs_rmdir(hidden_dir_dentry->d_inode,
hidden_dentry);
}
} else {
err = -EISDIR;
}
fist_copy_attr_times(dir, hidden_dir_dentry->d_inode);
unlock_dir(hidden_dir_dentry);
if (err) {
int local_err =
unionfs_refresh_hidden_dentry(dentry, bindex);
if (local_err) {
err = local_err;
goto out;
}
if (!IS_COPYUP_ERR(err) && err != -ENOTEMPTY
&& err != -EISDIR)
goto out;
global_err = err;
}
}
/* check if encountered error in the above loop */
if (global_err) {
/* If we failed in the leftmost branch, then err will be set and we should
* move one over to create the whiteout. Otherwise, we should try in the
* leftmost branch.
*/
if (err) {
if (dbstart(dentry) == 0) {
goto out;
}
err = create_whiteout(dentry, dbstart(dentry) - 1);
} else {
err = create_whiteout(dentry, dbstart(dentry));
}
} else {
err = create_whiteout(dentry, dbstart(dentry));
}
out:
/* propagate number of hard-links */
dentry->d_inode->i_nlink = get_nlinks(dentry->d_inode);
fist_print_dentry("OUT unionfs_rmdir_all: ", dentry);
print_exit_status(err);
return err;
}
/*
* Unlink a file or directory
* N.B. After this call fhp needs an fh_put
*/
int
nfsd_unlink(struct svc_rqst *rqstp, struct svc_fh *fhp, int type,
char *fname, int flen)
{
struct dentry *dentry, *rdentry;
struct inode *dirp;
int err;
/* N.B. We shouldn't need this test ... handled by dentry layer */
err = nfserr_acces;
if (!flen || isdotent(fname, flen))
goto out;
err = fh_verify(rqstp, fhp, S_IFDIR, MAY_REMOVE);
if (err)
goto out;
dentry = fhp->fh_dentry;
dirp = dentry->d_inode;
rdentry = lookup_dentry(fname, dget(dentry), 0);
err = PTR_ERR(rdentry);
if (IS_ERR(rdentry))
goto out_nfserr;
if (!rdentry->d_inode) {
dput(rdentry);
err = nfserr_noent;
goto out;
}
if (type != S_IFDIR) {
/* It's UNLINK */
err = fh_lock_parent(fhp, rdentry);
if (err)
goto out;
err = vfs_unlink(dirp, rdentry);
DQUOT_DROP(dirp);
fh_unlock(fhp);
dput(rdentry);
} else {
/* It's RMDIR */
/* See comments in fs/namei.c:do_rmdir */
rdentry->d_count++;
nfsd_double_down(&dirp->i_sem, &rdentry->d_inode->i_sem);
if (!fhp->fh_pre_mtime)
fhp->fh_pre_mtime = dirp->i_mtime;
fhp->fh_locked = 1;
err = -ENOENT;
if (check_parent(dirp, rdentry))
err = vfs_rmdir(dirp, rdentry);
rdentry->d_count--;
DQUOT_DROP(dirp);
if (!fhp->fh_post_version)
fhp->fh_post_version = dirp->i_version;
fhp->fh_locked = 0;
nfsd_double_up(&dirp->i_sem, &rdentry->d_inode->i_sem);
dput(rdentry);
}
if (err)
goto out_nfserr;
if (EX_ISSYNC(fhp->fh_export))
write_inode_now(dirp);
out:
return err;
out_nfserr:
err = nfserrno(-err);
goto out;
}
