Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   2) /* -*- mode: c; c-basic-offset: 8; -*-
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   3)  * vim: noexpandtab sw=8 ts=8 sts=0:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5)  * acl.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7)  * Copyright (C) 2004, 2008 Oracle.  All rights reserved.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9)  * CREDITS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10)  * Lots of code in this file is copy from linux/fs/ext3/acl.c.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11)  * Copyright (C) 2001-2003 Andreas Gruenbacher, <agruen@suse.de>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17) #include <linux/string.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19) #include <cluster/masklog.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21) #include "ocfs2.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22) #include "alloc.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) #include "dlmglue.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) #include "file.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) #include "inode.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) #include "journal.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) #include "ocfs2_fs.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) #include "xattr.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) #include "acl.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33)  * Convert from xattr value to acl struct.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) static struct posix_acl *ocfs2_acl_from_xattr(const void *value, size_t size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) 	int n, count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) 	struct posix_acl *acl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) 	if (!value)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) 		return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) 	if (size < sizeof(struct posix_acl_entry))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) 		return ERR_PTR(-EINVAL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) 	count = size / sizeof(struct posix_acl_entry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) 	acl = posix_acl_alloc(count, GFP_NOFS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) 	if (!acl)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) 		return ERR_PTR(-ENOMEM);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) 	for (n = 0; n < count; n++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) 		struct ocfs2_acl_entry *entry =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) 			(struct ocfs2_acl_entry *)value;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) 		acl->a_entries[n].e_tag  = le16_to_cpu(entry->e_tag);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) 		acl->a_entries[n].e_perm = le16_to_cpu(entry->e_perm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) 		switch(acl->a_entries[n].e_tag) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) 		case ACL_USER:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) 			acl->a_entries[n].e_uid =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) 				make_kuid(&init_user_ns,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) 					  le32_to_cpu(entry->e_id));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) 			break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) 		case ACL_GROUP:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) 			acl->a_entries[n].e_gid =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) 				make_kgid(&init_user_ns,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) 					  le32_to_cpu(entry->e_id));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) 			break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) 		default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) 			break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) 		value += sizeof(struct posix_acl_entry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) 	return acl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77)  * Convert acl struct to xattr value.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) static void *ocfs2_acl_to_xattr(const struct posix_acl *acl, size_t *size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) 	struct ocfs2_acl_entry *entry = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) 	char *ocfs2_acl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) 	size_t n;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) 	*size = acl->a_count * sizeof(struct posix_acl_entry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) 	ocfs2_acl = kmalloc(*size, GFP_NOFS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) 	if (!ocfs2_acl)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) 		return ERR_PTR(-ENOMEM);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) 	entry = (struct ocfs2_acl_entry *)ocfs2_acl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) 	for (n = 0; n < acl->a_count; n++, entry++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) 		entry->e_tag  = cpu_to_le16(acl->a_entries[n].e_tag);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) 		entry->e_perm = cpu_to_le16(acl->a_entries[n].e_perm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) 		switch(acl->a_entries[n].e_tag) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) 		case ACL_USER:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) 			entry->e_id = cpu_to_le32(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) 				from_kuid(&init_user_ns,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) 					  acl->a_entries[n].e_uid));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) 			break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) 		case ACL_GROUP:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) 			entry->e_id = cpu_to_le32(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) 				from_kgid(&init_user_ns,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) 					  acl->a_entries[n].e_gid));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) 			break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) 		default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) 			entry->e_id = cpu_to_le32(ACL_UNDEFINED_ID);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) 			break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) 	return ocfs2_acl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) static struct posix_acl *ocfs2_get_acl_nolock(struct inode *inode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) 					      int type,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) 					      struct buffer_head *di_bh)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) 	int name_index;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) 	char *value = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) 	struct posix_acl *acl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) 	int retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) 	switch (type) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) 	case ACL_TYPE_ACCESS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) 		name_index = OCFS2_XATTR_INDEX_POSIX_ACL_ACCESS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) 	case ACL_TYPE_DEFAULT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) 		name_index = OCFS2_XATTR_INDEX_POSIX_ACL_DEFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) 	default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) 		return ERR_PTR(-EINVAL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) 	retval = ocfs2_xattr_get_nolock(inode, di_bh, name_index, "", NULL, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) 	if (retval > 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) 		value = kmalloc(retval, GFP_NOFS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) 		if (!value)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) 			return ERR_PTR(-ENOMEM);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) 		retval = ocfs2_xattr_get_nolock(inode, di_bh, name_index,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) 						"", value, retval);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) 	if (retval > 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) 		acl = ocfs2_acl_from_xattr(value, retval);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) 	else if (retval == -ENODATA || retval == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) 		acl = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) 	else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) 		acl = ERR_PTR(retval);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) 	kfree(value);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) 	return acl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156)  * Helper function to set i_mode in memory and disk. Some call paths
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157)  * will not have di_bh or a journal handle to pass, in which case it
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158)  * will create it's own.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) static int ocfs2_acl_set_mode(struct inode *inode, struct buffer_head *di_bh,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) 			      handle_t *handle, umode_t new_mode)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) 	int ret, commit_handle = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) 	struct ocfs2_dinode *di;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) 	if (di_bh == NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) 		ret = ocfs2_read_inode_block(inode, &di_bh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) 		if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) 			mlog_errno(ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) 			goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) 	} else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) 		get_bh(di_bh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) 	if (handle == NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) 		handle = ocfs2_start_trans(OCFS2_SB(inode->i_sb),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) 					   OCFS2_INODE_UPDATE_CREDITS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) 		if (IS_ERR(handle)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) 			ret = PTR_ERR(handle);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) 			mlog_errno(ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) 			goto out_brelse;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) 		commit_handle = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) 	di = (struct ocfs2_dinode *)di_bh->b_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) 	ret = ocfs2_journal_access_di(handle, INODE_CACHE(inode), di_bh,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) 				      OCFS2_JOURNAL_ACCESS_WRITE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) 	if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) 		mlog_errno(ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) 		goto out_commit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) 	inode->i_mode = new_mode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) 	inode->i_ctime = current_time(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) 	di->i_mode = cpu_to_le16(inode->i_mode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) 	di->i_ctime = cpu_to_le64(inode->i_ctime.tv_sec);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) 	di->i_ctime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) 	ocfs2_update_inode_fsync_trans(handle, inode, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) 	ocfs2_journal_dirty(handle, di_bh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) out_commit:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) 	if (commit_handle)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) 		ocfs2_commit_trans(OCFS2_SB(inode->i_sb), handle);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) out_brelse:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) 	brelse(di_bh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) 	return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214)  * Set the access or default ACL of an inode.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) static int ocfs2_set_acl(handle_t *handle,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) 			 struct inode *inode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) 			 struct buffer_head *di_bh,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) 			 int type,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) 			 struct posix_acl *acl,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) 			 struct ocfs2_alloc_context *meta_ac,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) 			 struct ocfs2_alloc_context *data_ac)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) 	int name_index;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) 	void *value = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) 	size_t size = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) 	int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) 	if (S_ISLNK(inode->i_mode))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) 		return -EOPNOTSUPP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) 	switch (type) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) 	case ACL_TYPE_ACCESS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) 		name_index = OCFS2_XATTR_INDEX_POSIX_ACL_ACCESS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) 	case ACL_TYPE_DEFAULT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) 		name_index = OCFS2_XATTR_INDEX_POSIX_ACL_DEFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) 		if (!S_ISDIR(inode->i_mode))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) 			return acl ? -EACCES : 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) 	default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) 	if (acl) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) 		value = ocfs2_acl_to_xattr(acl, &size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) 		if (IS_ERR(value))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) 			return (int)PTR_ERR(value);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) 	if (handle)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) 		ret = ocfs2_xattr_set_handle(handle, inode, di_bh, name_index,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) 					     "", value, size, 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) 					     meta_ac, data_ac);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) 	else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) 		ret = ocfs2_xattr_set(inode, name_index, "", value, size, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) 	kfree(value);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) 	if (!ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) 		set_cached_acl(inode, type, acl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) 	return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) int ocfs2_iop_set_acl(struct inode *inode, struct posix_acl *acl, int type)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) 	struct buffer_head *bh = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) 	int status, had_lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) 	struct ocfs2_lock_holder oh;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) 	had_lock = ocfs2_inode_lock_tracker(inode, &bh, 1, &oh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) 	if (had_lock < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) 		return had_lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) 	if (type == ACL_TYPE_ACCESS && acl) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) 		umode_t mode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) 		status = posix_acl_update_mode(inode, &mode, &acl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) 		if (status)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) 			goto unlock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) 		status = ocfs2_acl_set_mode(inode, bh, NULL, mode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) 		if (status)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) 			goto unlock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) 	status = ocfs2_set_acl(NULL, inode, bh, type, acl, NULL, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) unlock:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) 	ocfs2_inode_unlock_tracker(inode, 1, &oh, had_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) 	brelse(bh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) 	return status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) struct posix_acl *ocfs2_iop_get_acl(struct inode *inode, int type)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) 	struct ocfs2_super *osb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) 	struct buffer_head *di_bh = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) 	struct posix_acl *acl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) 	int had_lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) 	struct ocfs2_lock_holder oh;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) 	osb = OCFS2_SB(inode->i_sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) 	if (!(osb->s_mount_opt & OCFS2_MOUNT_POSIX_ACL))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) 		return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) 	had_lock = ocfs2_inode_lock_tracker(inode, &di_bh, 0, &oh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) 	if (had_lock < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) 		return ERR_PTR(had_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) 	down_read(&OCFS2_I(inode)->ip_xattr_sem);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) 	acl = ocfs2_get_acl_nolock(inode, type, di_bh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) 	up_read(&OCFS2_I(inode)->ip_xattr_sem);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) 	ocfs2_inode_unlock_tracker(inode, 0, &oh, had_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) 	brelse(di_bh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) 	return acl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) int ocfs2_acl_chmod(struct inode *inode, struct buffer_head *bh)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) 	struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) 	struct posix_acl *acl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) 	int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) 	if (S_ISLNK(inode->i_mode))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) 		return -EOPNOTSUPP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) 	if (!(osb->s_mount_opt & OCFS2_MOUNT_POSIX_ACL))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) 		return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) 	down_read(&OCFS2_I(inode)->ip_xattr_sem);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) 	acl = ocfs2_get_acl_nolock(inode, ACL_TYPE_ACCESS, bh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) 	up_read(&OCFS2_I(inode)->ip_xattr_sem);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) 	if (IS_ERR_OR_NULL(acl))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) 		return PTR_ERR_OR_ZERO(acl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) 	ret = __posix_acl_chmod(&acl, GFP_KERNEL, inode->i_mode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) 	if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) 		return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) 	ret = ocfs2_set_acl(NULL, inode, NULL, ACL_TYPE_ACCESS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) 			    acl, NULL, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) 	posix_acl_release(acl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) 	return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344)  * Initialize the ACLs of a new inode. If parent directory has default ACL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345)  * then clone to new inode. Called from ocfs2_mknod.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) int ocfs2_init_acl(handle_t *handle,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) 		   struct inode *inode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) 		   struct inode *dir,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) 		   struct buffer_head *di_bh,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) 		   struct buffer_head *dir_bh,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) 		   struct ocfs2_alloc_context *meta_ac,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) 		   struct ocfs2_alloc_context *data_ac)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) 	struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) 	struct posix_acl *acl = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) 	int ret = 0, ret2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) 	umode_t mode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) 	if (!S_ISLNK(inode->i_mode)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) 		if (osb->s_mount_opt & OCFS2_MOUNT_POSIX_ACL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) 			down_read(&OCFS2_I(dir)->ip_xattr_sem);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) 			acl = ocfs2_get_acl_nolock(dir, ACL_TYPE_DEFAULT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) 						   dir_bh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) 			up_read(&OCFS2_I(dir)->ip_xattr_sem);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) 			if (IS_ERR(acl))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) 				return PTR_ERR(acl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) 		if (!acl) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) 			mode = inode->i_mode & ~current_umask();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) 			ret = ocfs2_acl_set_mode(inode, di_bh, handle, mode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) 			if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) 				mlog_errno(ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) 				goto cleanup;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) 			}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) 	if ((osb->s_mount_opt & OCFS2_MOUNT_POSIX_ACL) && acl) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) 		if (S_ISDIR(inode->i_mode)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) 			ret = ocfs2_set_acl(handle, inode, di_bh,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) 					    ACL_TYPE_DEFAULT, acl,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) 					    meta_ac, data_ac);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) 			if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) 				goto cleanup;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) 		mode = inode->i_mode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) 		ret = __posix_acl_create(&acl, GFP_NOFS, &mode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) 		if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) 			return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) 		ret2 = ocfs2_acl_set_mode(inode, di_bh, handle, mode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) 		if (ret2) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) 			mlog_errno(ret2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) 			ret = ret2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) 			goto cleanup;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) 		if (ret > 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) 			ret = ocfs2_set_acl(handle, inode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) 					    di_bh, ACL_TYPE_ACCESS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) 					    acl, meta_ac, data_ac);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) cleanup:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) 	posix_acl_release(acl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) 	return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) }