277 	        int error = posix_acl_permission(inode, acl, mask);  in check_acl()  local
279 	        return error;  in check_acl()
297 			int error = check_acl(inode, mask);  in acl_permission_check()  local
298 			if (error != -EAGAIN)  in acl_permission_check()
299 				return error;  in acl_permission_check()
987 	int error;  in get_link()  local
999 	error = security_inode_follow_link(dentry, inode,  in get_link()
1001 	if (unlikely(error))  in get_link()
1002 		return ERR_PTR(error);  in get_link()
1455 	int error;  in lookup_dcache()  local
1461 			error = d_revalidate(dentry, flags);  in lookup_dcache()
1462 			if (unlikely(error <= 0)) {  in lookup_dcache()
1463 				if (error < 0) {  in lookup_dcache()
1465 					return ERR_PTR(error);  in lookup_dcache()
1669 	int error;  in pick_link()  local
1679 	error = nd_alloc_stack(nd);  in pick_link()
1680 	if (unlikely(error)) {  in pick_link()
1681 		if (error == -ECHILD) {  in pick_link()
1684 			error = nd_alloc_stack(nd);  in pick_link()
1686 		if (error) {  in pick_link()
1688 			return error;  in pick_link()
2099 	int error = may_follow_link(nd);  in trailing_symlink()  local
2100 	if (unlikely(error))  in trailing_symlink()
2101 		return ERR_PTR(error);  in trailing_symlink()
2385 	int error = 0;  in mountpoint_last()  local
2398 		error = handle_dots(nd, nd->last_type);  in mountpoint_last()
2399 		if (error)  in mountpoint_last()
2400 			return error;  in mountpoint_last()
2435 	error = should_follow_link(nd, path, nd->flags & LOOKUP_FOLLOW,  in mountpoint_last()
2437 	if (unlikely(error))  in mountpoint_last()
2438 		return error;  in mountpoint_last()
2477 	int error;  in filename_mountpoint()  local
2481 	error = path_mountpoint(&nd, flags | LOOKUP_RCU, path);  in filename_mountpoint()
2482 	if (unlikely(error == -ECHILD))  in filename_mountpoint()
2483 		error = path_mountpoint(&nd, flags, path);  in filename_mountpoint()
2484 	if (unlikely(error == -ESTALE))  in filename_mountpoint()
2485 		error = path_mountpoint(&nd, flags | LOOKUP_REVAL, path);  in filename_mountpoint()
2486 	if (likely(!error))  in filename_mountpoint()
2490 	return error;  in filename_mountpoint()
2556 	int error;  in may_delete()  local
2565 	error = inode_permission(dir, MAY_WRITE | MAY_EXEC);  in may_delete()
2566 	if (error)  in may_delete()
2567 		return error;  in may_delete()
2653 	int error = may_create(dir, dentry);  in vfs_create()  local
2654 	if (error)  in vfs_create()
2655 		return error;  in vfs_create()
2661 	error = security_inode_create(dir, dentry, mode);  in vfs_create()
2662 	if (error)  in vfs_create()
2663 		return error;  in vfs_create()
2664 	error = dir->i_op->create(dir, dentry, mode, want_excl);  in vfs_create()
2665 	if (!error)  in vfs_create()
2667 	return error;  in vfs_create()
2675 	int error;  in may_open()  local
2702 	error = inode_permission(inode, acc_mode);  in may_open()
2703 	if (error)  in may_open()
2704 		return error;  in may_open()
2727 	int error = get_write_access(inode);  in handle_truncate()  local
2728 	if (error)  in handle_truncate()
2729 		return error;  in handle_truncate()
2733 	error = locks_verify_locked(filp);  in handle_truncate()
2734 	if (!error)  in handle_truncate()
2735 		error = security_path_truncate(path);  in handle_truncate()
2736 	if (!error) {  in handle_truncate()
2737 		error = do_truncate(path->dentry, 0,  in handle_truncate()
2742 	return error;  in handle_truncate()
2754 	int error = security_path_mknod(dir, dentry, mode, 0);  in may_o_create()  local
2755 	if (error)  in may_o_create()
2756 		return error;  in may_o_create()
2758 	error = inode_permission(dir->dentry->d_inode, MAY_WRITE | MAY_EXEC);  in may_o_create()
2759 	if (error)  in may_o_create()
2760 		return error;  in may_o_create()
2787 	int error;  in atomic_open()  local
2797 		error = -ENOENT;  in atomic_open()
2838 		error = may_o_create(&nd->path, dentry, mode);  in atomic_open()
2839 		if (error) {  in atomic_open()
2840 			create_error = error;  in atomic_open()
2852 	error = dir->i_op->atomic_open(dir, dentry, file, open_flag, mode,  in atomic_open()
2854 	if (error < 0) {  in atomic_open()
2855 		if (create_error && error == -ENOENT)  in atomic_open()
2856 			error = create_error;  in atomic_open()
2860 	if (error) {	/* returned 1, that is */  in atomic_open()
2862 			error = -EIO;  in atomic_open()
2874 				error = create_error;  in atomic_open()
2879 				error = -EEXIST;  in atomic_open()
2896 	error = may_open(&file->f_path, acc_mode, open_flag);  in atomic_open()
2897 	if (error)  in atomic_open()
2902 	return error;  in atomic_open()
2911 		error = create_error;  in atomic_open()
2946 	int error;  in lookup_open()  local
2984 			error = -EROFS;  in lookup_open()
2988 		error = security_path_mknod(&nd->path, dentry, mode, 0);  in lookup_open()
2989 		if (error)  in lookup_open()
2991 		error = vfs_create(dir->d_inode, dentry, mode,  in lookup_open()
2993 		if (error)  in lookup_open()
3003 	return error;  in lookup_open()
3023 	int error;  in do_last()  local
3029 		error = handle_dots(nd, nd->last_type);  in do_last()
3030 		if (unlikely(error))  in do_last()
3031 			return error;  in do_last()
3039 		error = lookup_fast(nd, &path, &inode, &seq);  in do_last()
3040 		if (likely(!error))  in do_last()
3043 		if (error < 0)  in do_last()
3044 			return error;  in do_last()
3054 		error = complete_walk(nd);  in do_last()
3055 		if (error)  in do_last()
3056 			return error;  in do_last()
3066 		error = mnt_want_write(nd->path.mnt);  in do_last()
3067 		if (!error)  in do_last()
3076 	error = lookup_open(nd, &path, file, op, got_write, opened);  in do_last()
3079 	if (error <= 0) {  in do_last()
3080 		if (error)  in do_last()
3121 	error = follow_managed(&path, nd);  in do_last()
3122 	if (unlikely(error < 0))  in do_last()
3123 		return error;  in do_last()
3135 	error = should_follow_link(nd, &path, nd->flags & LOOKUP_FOLLOW,  in do_last()
3137 	if (unlikely(error))  in do_last()
3138 		return error;  in do_last()
3152 	error = complete_walk(nd);  in do_last()
3153 	if (error) {  in do_last()
3155 		return error;  in do_last()
3159 		error = -ELOOP;  in do_last()
3162 	error = -EISDIR;  in do_last()
3165 	error = -ENOTDIR;  in do_last()
3172 		error = mnt_want_write(nd->path.mnt);  in do_last()
3173 		if (error)  in do_last()
3178 	error = may_open(&nd->path, acc_mode, open_flag);  in do_last()
3179 	if (error)  in do_last()
3183 	error = vfs_open(&nd->path, file, current_cred());  in do_last()
3184 	if (!error) {  in do_last()
3187 		if (error == -EOPENSTALE)  in do_last()
3192 	error = open_check_o_direct(file);  in do_last()
3193 	if (error)  in do_last()
3195 	error = ima_file_check(file, op->acc_mode, *opened);  in do_last()
3196 	if (error)  in do_last()
3200 		error = handle_truncate(file);  in do_last()
3201 		if (error)  in do_last()
3205 	if (unlikely(error > 0)) {  in do_last()
3207 		error = -EINVAL;  in do_last()
3212 	return error;  in do_last()
3245 	int error = path_lookupat(nd, flags | LOOKUP_DIRECTORY, &path);  in do_tmpfile()  local
3246 	if (unlikely(error))  in do_tmpfile()
3247 		return error;  in do_tmpfile()
3248 	error = mnt_want_write(path.mnt);  in do_tmpfile()
3249 	if (unlikely(error))  in do_tmpfile()
3253 	error = inode_permission(dir, MAY_WRITE | MAY_EXEC);  in do_tmpfile()
3254 	if (error)  in do_tmpfile()
3257 		error = -EOPNOTSUPP;  in do_tmpfile()
3262 		error = -ENOMEM;  in do_tmpfile()
3267 	error = dir->i_op->tmpfile(dir, child, op->mode);  in do_tmpfile()
3268 	if (error)  in do_tmpfile()
3272 	error = may_open(&path, MAY_OPEN, op->open_flag);  in do_tmpfile()
3273 	if (error)  in do_tmpfile()
3276 	error = finish_open(file, child, NULL, opened);  in do_tmpfile()
3277 	if (error)  in do_tmpfile()
3279 	error = open_check_o_direct(file);  in do_tmpfile()
3280 	if (error) {  in do_tmpfile()
3292 	return error;  in do_tmpfile()
3301 	int error;  in path_openat()  local
3310 		error = do_tmpfile(nd, flags, op, file, &opened);  in path_openat()
3319 	while (!(error = link_path_walk(s, nd)) &&  in path_openat()
3320 		(error = do_last(nd, file, op, &opened)) > 0) {  in path_openat()
3324 			error = PTR_ERR(s);  in path_openat()
3331 		BUG_ON(!error);  in path_openat()
3334 	if (unlikely(error)) {  in path_openat()
3335 		if (error == -EOPENSTALE) {  in path_openat()
3337 				error = -ECHILD;  in path_openat()
3339 				error = -ESTALE;  in path_openat()
3341 		file = ERR_PTR(error);  in path_openat()
3399 	int error;  in filename_create()  local
3430 	error = -EEXIST;  in filename_create()
3441 		error = -ENOENT;  in filename_create()
3445 		error = err2;  in filename_create()
3452 	dentry = ERR_PTR(error);  in filename_create()
3489 	int error = may_create(dir, dentry);  in vfs_mknod()  local
3491 	if (error)  in vfs_mknod()
3492 		return error;  in vfs_mknod()
3500 	error = devcgroup_inode_mknod(mode, dev);  in vfs_mknod()
3501 	if (error)  in vfs_mknod()
3502 		return error;  in vfs_mknod()
3504 	error = security_inode_mknod(dir, dentry, mode, dev);  in vfs_mknod()
3505 	if (error)  in vfs_mknod()
3506 		return error;  in vfs_mknod()
3508 	error = dir->i_op->mknod(dir, dentry, mode, dev);  in vfs_mknod()
3509 	if (!error)  in vfs_mknod()
3511 	return error;  in vfs_mknod()
3537 	int error;  in SYSCALL_DEFINE4()  local
3540 	error = may_mknod(mode);  in SYSCALL_DEFINE4()
3541 	if (error)  in SYSCALL_DEFINE4()
3542 		return error;  in SYSCALL_DEFINE4()
3550 	error = security_path_mknod(&path, dentry, mode, dev);  in SYSCALL_DEFINE4()
3551 	if (error)  in SYSCALL_DEFINE4()
3555 			error = vfs_create(path.dentry->d_inode,dentry,mode,true);  in SYSCALL_DEFINE4()
3558 			error = vfs_mknod(path.dentry->d_inode,dentry,mode,  in SYSCALL_DEFINE4()
3562 			error = vfs_mknod(path.dentry->d_inode,dentry,mode,0);  in SYSCALL_DEFINE4()
3567 	if (retry_estale(error, lookup_flags)) {  in SYSCALL_DEFINE4()
3571 	return error;  in SYSCALL_DEFINE4()
3581 	int error = may_create(dir, dentry);  in vfs_mkdir()  local
3584 	if (error)  in vfs_mkdir()
3585 		return error;  in vfs_mkdir()
3591 	error = security_inode_mkdir(dir, dentry, mode);  in vfs_mkdir()
3592 	if (error)  in vfs_mkdir()
3593 		return error;  in vfs_mkdir()
3598 	error = dir->i_op->mkdir(dir, dentry, mode);  in vfs_mkdir()
3599 	if (!error)  in vfs_mkdir()
3601 	return error;  in vfs_mkdir()
3609 	int error;  in SYSCALL_DEFINE3()  local
3619 	error = security_path_mkdir(&path, dentry, mode);  in SYSCALL_DEFINE3()
3620 	if (!error)  in SYSCALL_DEFINE3()
3621 		error = vfs_mkdir(path.dentry->d_inode, dentry, mode);  in SYSCALL_DEFINE3()
3623 	if (retry_estale(error, lookup_flags)) {  in SYSCALL_DEFINE3()
3627 	return error;  in SYSCALL_DEFINE3()
3662 	int error = may_delete(dir, dentry, 1);  in vfs_rmdir()  local
3664 	if (error)  in vfs_rmdir()
3665 		return error;  in vfs_rmdir()
3673 	error = -EBUSY;  in vfs_rmdir()
3677 	error = security_inode_rmdir(dir, dentry);  in vfs_rmdir()
3678 	if (error)  in vfs_rmdir()
3682 	error = dir->i_op->rmdir(dir, dentry);  in vfs_rmdir()
3683 	if (error)  in vfs_rmdir()
3693 	if (!error)  in vfs_rmdir()
3695 	return error;  in vfs_rmdir()
3701 	int error = 0;  in do_rmdir()  local
3716 		error = -ENOTEMPTY;  in do_rmdir()
3719 		error = -EINVAL;  in do_rmdir()
3722 		error = -EBUSY;  in do_rmdir()
3726 	error = mnt_want_write(path.mnt);  in do_rmdir()
3727 	if (error)  in do_rmdir()
3732 	error = PTR_ERR(dentry);  in do_rmdir()
3736 		error = -ENOENT;  in do_rmdir()
3739 	error = security_path_rmdir(&path, dentry);  in do_rmdir()
3740 	if (error)  in do_rmdir()
3742 	error = vfs_rmdir(path.dentry->d_inode, dentry);  in do_rmdir()
3751 	if (retry_estale(error, lookup_flags)) {  in do_rmdir()
3755 	return error;  in do_rmdir()
3784 	int error = may_delete(dir, dentry, 0);  in vfs_unlink()  local
3786 	if (error)  in vfs_unlink()
3787 		return error;  in vfs_unlink()
3794 		error = -EBUSY;  in vfs_unlink()
3796 		error = security_inode_unlink(dir, dentry);  in vfs_unlink()
3797 		if (!error) {  in vfs_unlink()
3798 			error = try_break_deleg(target, delegated_inode);  in vfs_unlink()
3799 			if (error)  in vfs_unlink()
3801 			error = dir->i_op->unlink(dir, dentry);  in vfs_unlink()
3802 			if (!error) {  in vfs_unlink()
3812 	if (!error && !(dentry->d_flags & DCACHE_NFSFS_RENAMED)) {  in vfs_unlink()
3817 	return error;  in vfs_unlink()
3829 	int error;  in do_unlinkat()  local
3844 	error = -EISDIR;  in do_unlinkat()
3848 	error = mnt_want_write(path.mnt);  in do_unlinkat()
3849 	if (error)  in do_unlinkat()
3854 	error = PTR_ERR(dentry);  in do_unlinkat()
3863 		error = security_path_unlink(&path, dentry);  in do_unlinkat()
3864 		if (error)  in do_unlinkat()
3866 		error = vfs_unlink(path.dentry->d_inode, dentry, &delegated_inode);  in do_unlinkat()
3875 		error = break_deleg_wait(&delegated_inode);  in do_unlinkat()
3876 		if (!error)  in do_unlinkat()
3883 	if (retry_estale(error, lookup_flags)) {  in do_unlinkat()
3888 	return error;  in do_unlinkat()
3892 		error = -ENOENT;  in do_unlinkat()
3894 		error = -EISDIR;  in do_unlinkat()
3896 		error = -ENOTDIR;  in do_unlinkat()
3918 	int error = may_create(dir, dentry);  in vfs_symlink()  local
3920 	if (error)  in vfs_symlink()
3921 		return error;  in vfs_symlink()
3926 	error = security_inode_symlink(dir, dentry, oldname);  in vfs_symlink()
3927 	if (error)  in vfs_symlink()
3928 		return error;  in vfs_symlink()
3930 	error = dir->i_op->symlink(dir, dentry, oldname);  in vfs_symlink()
3931 	if (!error)  in vfs_symlink()
3933 	return error;  in vfs_symlink()
3940 	int error;  in SYSCALL_DEFINE3()  local
3951 	error = PTR_ERR(dentry);  in SYSCALL_DEFINE3()
3955 	error = security_path_symlink(&path, dentry, from->name);  in SYSCALL_DEFINE3()
3956 	if (!error)  in SYSCALL_DEFINE3()
3957 		error = vfs_symlink(path.dentry->d_inode, dentry, from->name);  in SYSCALL_DEFINE3()
3959 	if (retry_estale(error, lookup_flags)) {  in SYSCALL_DEFINE3()
3965 	return error;  in SYSCALL_DEFINE3()
3996 	int error;  in vfs_link()  local
4001 	error = may_create(dir, new_dentry);  in vfs_link()
4002 	if (error)  in vfs_link()
4003 		return error;  in vfs_link()
4018 	error = security_inode_link(old_dentry, dir, new_dentry);  in vfs_link()
4019 	if (error)  in vfs_link()
4020 		return error;  in vfs_link()
4025 		error =  -ENOENT;  in vfs_link()
4027 		error = -EMLINK;  in vfs_link()
4029 		error = try_break_deleg(inode, delegated_inode);  in vfs_link()
4030 		if (!error)  in vfs_link()
4031 			error = dir->i_op->link(old_dentry, dir, new_dentry);  in vfs_link()
4034 	if (!error && (inode->i_state & I_LINKABLE)) {  in vfs_link()
4040 	if (!error)  in vfs_link()
4042 	return error;  in vfs_link()
4062 	int error;  in SYSCALL_DEFINE5()  local
4080 	error = user_path_at(olddfd, oldname, how, &old_path);  in SYSCALL_DEFINE5()
4081 	if (error)  in SYSCALL_DEFINE5()
4082 		return error;  in SYSCALL_DEFINE5()
4086 	error = PTR_ERR(new_dentry);  in SYSCALL_DEFINE5()
4090 	error = -EXDEV;  in SYSCALL_DEFINE5()
4093 	error = may_linkat(&old_path);  in SYSCALL_DEFINE5()
4094 	if (unlikely(error))  in SYSCALL_DEFINE5()
4096 	error = security_path_link(old_path.dentry, &new_path, new_dentry);  in SYSCALL_DEFINE5()
4097 	if (error)  in SYSCALL_DEFINE5()
4099 	error = vfs_link(old_path.dentry, new_path.dentry->d_inode, new_dentry, &delegated_inode);  in SYSCALL_DEFINE5()
4103 		error = break_deleg_wait(&delegated_inode);  in SYSCALL_DEFINE5()
4104 		if (!error) {  in SYSCALL_DEFINE5()
4109 	if (retry_estale(error, how)) {  in SYSCALL_DEFINE5()
4117 	return error;  in SYSCALL_DEFINE5()
4178 	int error;  in vfs_rename()  local
4193 	error = may_delete(old_dir, old_dentry, is_dir);  in vfs_rename()
4194 	if (error)  in vfs_rename()
4195 		return error;  in vfs_rename()
4198 		error = may_create(new_dir, new_dentry);  in vfs_rename()
4203 			error = may_delete(new_dir, new_dentry, is_dir);  in vfs_rename()
4205 			error = may_delete(new_dir, new_dentry, new_is_dir);  in vfs_rename()
4207 	if (error)  in vfs_rename()
4208 		return error;  in vfs_rename()
4222 			error = inode_permission(source, MAY_WRITE);  in vfs_rename()
4223 			if (error)  in vfs_rename()
4224 				return error;  in vfs_rename()
4227 			error = inode_permission(target, MAY_WRITE);  in vfs_rename()
4228 			if (error)  in vfs_rename()
4229 				return error;  in vfs_rename()
4233 	error = security_inode_rename(old_dir, old_dentry, new_dir, new_dentry,  in vfs_rename()
4235 	if (error)  in vfs_rename()
4236 		return error;  in vfs_rename()
4245 	error = -EBUSY;  in vfs_rename()
4250 		error = -EMLINK;  in vfs_rename()
4260 		error = try_break_deleg(source, delegated_inode);  in vfs_rename()
4261 		if (error)  in vfs_rename()
4265 		error = try_break_deleg(target, delegated_inode);  in vfs_rename()
4266 		if (error)  in vfs_rename()
4270 		error = old_dir->i_op->rename(old_dir, old_dentry,  in vfs_rename()
4274 		error = old_dir->i_op->rename2(old_dir, old_dentry,  in vfs_rename()
4277 	if (error)  in vfs_rename()
4298 	if (!error) {  in vfs_rename()
4308 	return error;  in vfs_rename()
4325 	int error;  in SYSCALL_DEFINE5()  local
4344 		error = PTR_ERR(from);  in SYSCALL_DEFINE5()
4351 		error = PTR_ERR(to);  in SYSCALL_DEFINE5()
4355 	error = -EXDEV;  in SYSCALL_DEFINE5()
4359 	error = -EBUSY;  in SYSCALL_DEFINE5()
4364 		error = -EEXIST;  in SYSCALL_DEFINE5()
4368 	error = mnt_want_write(old_path.mnt);  in SYSCALL_DEFINE5()
4369 	if (error)  in SYSCALL_DEFINE5()
4376 	error = PTR_ERR(old_dentry);  in SYSCALL_DEFINE5()
4380 	error = -ENOENT;  in SYSCALL_DEFINE5()
4384 	error = PTR_ERR(new_dentry);  in SYSCALL_DEFINE5()
4387 	error = -EEXIST;  in SYSCALL_DEFINE5()
4391 		error = -ENOENT;  in SYSCALL_DEFINE5()
4396 			error = -ENOTDIR;  in SYSCALL_DEFINE5()
4403 		error = -ENOTDIR;  in SYSCALL_DEFINE5()
4410 	error = -EINVAL;  in SYSCALL_DEFINE5()
4415 		error = -ENOTEMPTY;  in SYSCALL_DEFINE5()
4419 	error = security_path_rename(&old_path, old_dentry,  in SYSCALL_DEFINE5()
4421 	if (error)  in SYSCALL_DEFINE5()
4423 	error = vfs_rename(old_path.dentry->d_inode, old_dentry,  in SYSCALL_DEFINE5()
4433 		error = break_deleg_wait(&delegated_inode);  in SYSCALL_DEFINE5()
4434 		if (!error)  in SYSCALL_DEFINE5()
4439 	if (retry_estale(error, lookup_flags))  in SYSCALL_DEFINE5()
4452 	return error;  in SYSCALL_DEFINE5()
4468 	int error = may_create(dir, dentry);  in vfs_whiteout()  local
4469 	if (error)  in vfs_whiteout()
4470 		return error;  in vfs_whiteout()