17221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao/* 27221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao * linux/fs/ceph/acl.c 37221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao * 47221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao * Copyright (C) 2013 Guangliang Zhao, <lucienchao@gmail.com> 57221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao * 67221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao * This program is free software; you can redistribute it and/or 77221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao * modify it under the terms of the GNU General Public 87221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao * License v2 as published by the Free Software Foundation. 97221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao * 107221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao * This program is distributed in the hope that it will be useful, 117221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao * but WITHOUT ANY WARRANTY; without even the implied warranty of 127221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 137221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao * General Public License for more details. 147221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao * 157221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao * You should have received a copy of the GNU General Public 167221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao * License along with this program; if not, write to the 177221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao * Free Software Foundation, Inc., 59 Temple Place - Suite 330, 187221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao * Boston, MA 021110-1307, USA. 197221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao */ 207221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao 217221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao#include <linux/ceph/ceph_debug.h> 227221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao#include <linux/fs.h> 237221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao#include <linux/string.h> 247221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao#include <linux/xattr.h> 257221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao#include <linux/posix_acl_xattr.h> 267221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao#include <linux/posix_acl.h> 277221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao#include <linux/sched.h> 287221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao#include <linux/slab.h> 297221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao 307221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao#include "super.h" 317221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao 327221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhaostatic inline void ceph_set_cached_acl(struct inode *inode, 337221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao int type, struct posix_acl *acl) 347221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao{ 357221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao struct ceph_inode_info *ci = ceph_inode(inode); 367221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao 377221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao spin_lock(&ci->i_ceph_lock); 387221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao if (__ceph_caps_issued_mask(ci, CEPH_CAP_XATTR_SHARED, 0)) 397221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao set_cached_acl(inode, type, acl); 407221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao spin_unlock(&ci->i_ceph_lock); 417221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao} 427221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao 437221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhaostatic inline struct posix_acl *ceph_get_cached_acl(struct inode *inode, 447221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao int type) 457221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao{ 467221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao struct ceph_inode_info *ci = ceph_inode(inode); 477221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao struct posix_acl *acl = ACL_NOT_CACHED; 487221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao 497221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao spin_lock(&ci->i_ceph_lock); 507221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao if (__ceph_caps_issued_mask(ci, CEPH_CAP_XATTR_SHARED, 0)) 517221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao acl = get_cached_acl(inode, type); 527221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao spin_unlock(&ci->i_ceph_lock); 537221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao 547221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao return acl; 557221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao} 567221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao 577221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhaostruct posix_acl *ceph_get_acl(struct inode *inode, int type) 587221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao{ 597221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao int size; 607221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao const char *name; 617221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao char *value = NULL; 627221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao struct posix_acl *acl; 637221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao 647221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao switch (type) { 657221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao case ACL_TYPE_ACCESS: 667221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao name = POSIX_ACL_XATTR_ACCESS; 677221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao break; 687221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao case ACL_TYPE_DEFAULT: 697221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao name = POSIX_ACL_XATTR_DEFAULT; 707221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao break; 717221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao default: 727221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao BUG(); 737221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao } 747221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao 757221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao size = __ceph_getxattr(inode, name, "", 0); 767221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao if (size > 0) { 777221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao value = kzalloc(size, GFP_NOFS); 787221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao if (!value) 797221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao return ERR_PTR(-ENOMEM); 807221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao size = __ceph_getxattr(inode, name, value, size); 817221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao } 827221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao 837221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao if (size > 0) 847221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao acl = posix_acl_from_xattr(&init_user_ns, value, size); 857221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao else if (size == -ERANGE || size == -ENODATA || size == 0) 867221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao acl = NULL; 877221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao else 887221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao acl = ERR_PTR(-EIO); 897221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao 907221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao kfree(value); 917221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao 927221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao if (!IS_ERR(acl)) 937221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao ceph_set_cached_acl(inode, type, acl); 947221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao 957221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao return acl; 967221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao} 977221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao 9872466d0b92e04a7e0e5abf74c86eb352225346e4Sage Weilint ceph_set_acl(struct inode *inode, struct posix_acl *acl, int type) 997221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao{ 1007221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao int ret = 0, size = 0; 1017221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao const char *name = NULL; 1027221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao char *value = NULL; 1037221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao struct iattr newattrs; 1047221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao umode_t new_mode = inode->i_mode, old_mode = inode->i_mode; 10577516dc92a14bb3853df959c0cb3ef51e659f5afSage Weil struct dentry *dentry; 1067221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao 1077221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao switch (type) { 1087221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao case ACL_TYPE_ACCESS: 1097221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao name = POSIX_ACL_XATTR_ACCESS; 1107221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao if (acl) { 1117221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao ret = posix_acl_equiv_mode(acl, &new_mode); 1127221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao if (ret < 0) 1137221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao goto out; 1147221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao if (ret == 0) 1157221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao acl = NULL; 1167221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao } 1177221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao break; 1187221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao case ACL_TYPE_DEFAULT: 1197221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao if (!S_ISDIR(inode->i_mode)) { 1207221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao ret = acl ? -EINVAL : 0; 1217221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao goto out; 1227221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao } 1237221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao name = POSIX_ACL_XATTR_DEFAULT; 1247221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao break; 1257221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao default: 1267221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao ret = -EINVAL; 1277221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao goto out; 1287221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao } 1297221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao 1307221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao if (acl) { 1317221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao size = posix_acl_xattr_size(acl->a_count); 1327221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao value = kmalloc(size, GFP_NOFS); 1337221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao if (!value) { 1347221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao ret = -ENOMEM; 1357221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao goto out; 1367221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao } 1377221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao 1387221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao ret = posix_acl_to_xattr(&init_user_ns, acl, value, size); 1397221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao if (ret < 0) 1407221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao goto out_free; 1417221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao } 1427221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao 14377516dc92a14bb3853df959c0cb3ef51e659f5afSage Weil dentry = d_find_alias(inode); 1447221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao if (new_mode != old_mode) { 1457221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao newattrs.ia_mode = new_mode; 1467221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao newattrs.ia_valid = ATTR_MODE; 1477221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao ret = ceph_setattr(dentry, &newattrs); 1487221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao if (ret) 14977516dc92a14bb3853df959c0cb3ef51e659f5afSage Weil goto out_dput; 1507221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao } 1517221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao 1527a92d64760541e66bf5d1131f029b82773ce3922Yan, Zheng ret = __ceph_setxattr(dentry, name, value, size, 0); 1537221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao if (ret) { 1547221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao if (new_mode != old_mode) { 1557221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao newattrs.ia_mode = old_mode; 1567221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao newattrs.ia_valid = ATTR_MODE; 1577221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao ceph_setattr(dentry, &newattrs); 1587221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao } 15977516dc92a14bb3853df959c0cb3ef51e659f5afSage Weil goto out_dput; 1607221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao } 1617221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao 1627221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao ceph_set_cached_acl(inode, type, acl); 1637221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao 16477516dc92a14bb3853df959c0cb3ef51e659f5afSage Weilout_dput: 16577516dc92a14bb3853df959c0cb3ef51e659f5afSage Weil dput(dentry); 1667221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhaoout_free: 1677221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao kfree(value); 1687221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhaoout: 1697221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao return ret; 1707221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao} 1717221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao 172b1ee94aa593abd03634bc3887b8e189840e42c12Yan, Zhengint ceph_pre_init_acls(struct inode *dir, umode_t *mode, 173b1ee94aa593abd03634bc3887b8e189840e42c12Yan, Zheng struct ceph_acls_info *info) 1747221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao{ 175b1ee94aa593abd03634bc3887b8e189840e42c12Yan, Zheng struct posix_acl *acl, *default_acl; 176b1ee94aa593abd03634bc3887b8e189840e42c12Yan, Zheng size_t val_size1 = 0, val_size2 = 0; 177b1ee94aa593abd03634bc3887b8e189840e42c12Yan, Zheng struct ceph_pagelist *pagelist = NULL; 178b1ee94aa593abd03634bc3887b8e189840e42c12Yan, Zheng void *tmp_buf = NULL; 179b1ee94aa593abd03634bc3887b8e189840e42c12Yan, Zheng int err; 180b1ee94aa593abd03634bc3887b8e189840e42c12Yan, Zheng 181b1ee94aa593abd03634bc3887b8e189840e42c12Yan, Zheng err = posix_acl_create(dir, mode, &default_acl, &acl); 182b1ee94aa593abd03634bc3887b8e189840e42c12Yan, Zheng if (err) 183b1ee94aa593abd03634bc3887b8e189840e42c12Yan, Zheng return err; 184b1ee94aa593abd03634bc3887b8e189840e42c12Yan, Zheng 185b1ee94aa593abd03634bc3887b8e189840e42c12Yan, Zheng if (acl) { 186b1ee94aa593abd03634bc3887b8e189840e42c12Yan, Zheng int ret = posix_acl_equiv_mode(acl, mode); 187b1ee94aa593abd03634bc3887b8e189840e42c12Yan, Zheng if (ret < 0) 188b1ee94aa593abd03634bc3887b8e189840e42c12Yan, Zheng goto out_err; 189b1ee94aa593abd03634bc3887b8e189840e42c12Yan, Zheng if (ret == 0) { 190b1ee94aa593abd03634bc3887b8e189840e42c12Yan, Zheng posix_acl_release(acl); 191b1ee94aa593abd03634bc3887b8e189840e42c12Yan, Zheng acl = NULL; 192f5f186474335ac385def69564542e6e4c6a3a8bdYan, Zheng } 193f5f186474335ac385def69564542e6e4c6a3a8bdYan, Zheng } 1947221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao 195b1ee94aa593abd03634bc3887b8e189840e42c12Yan, Zheng if (!default_acl && !acl) 196b1ee94aa593abd03634bc3887b8e189840e42c12Yan, Zheng return 0; 197b1ee94aa593abd03634bc3887b8e189840e42c12Yan, Zheng 198b1ee94aa593abd03634bc3887b8e189840e42c12Yan, Zheng if (acl) 199b1ee94aa593abd03634bc3887b8e189840e42c12Yan, Zheng val_size1 = posix_acl_xattr_size(acl->a_count); 200b1ee94aa593abd03634bc3887b8e189840e42c12Yan, Zheng if (default_acl) 201b1ee94aa593abd03634bc3887b8e189840e42c12Yan, Zheng val_size2 = posix_acl_xattr_size(default_acl->a_count); 202b1ee94aa593abd03634bc3887b8e189840e42c12Yan, Zheng 203b1ee94aa593abd03634bc3887b8e189840e42c12Yan, Zheng err = -ENOMEM; 204b1ee94aa593abd03634bc3887b8e189840e42c12Yan, Zheng tmp_buf = kmalloc(max(val_size1, val_size2), GFP_NOFS); 205b1ee94aa593abd03634bc3887b8e189840e42c12Yan, Zheng if (!tmp_buf) 206b1ee94aa593abd03634bc3887b8e189840e42c12Yan, Zheng goto out_err; 207b1ee94aa593abd03634bc3887b8e189840e42c12Yan, Zheng pagelist = kmalloc(sizeof(struct ceph_pagelist), GFP_NOFS); 208b1ee94aa593abd03634bc3887b8e189840e42c12Yan, Zheng if (!pagelist) 209b1ee94aa593abd03634bc3887b8e189840e42c12Yan, Zheng goto out_err; 210b1ee94aa593abd03634bc3887b8e189840e42c12Yan, Zheng ceph_pagelist_init(pagelist); 211b1ee94aa593abd03634bc3887b8e189840e42c12Yan, Zheng 212b1ee94aa593abd03634bc3887b8e189840e42c12Yan, Zheng err = ceph_pagelist_reserve(pagelist, PAGE_SIZE); 213b1ee94aa593abd03634bc3887b8e189840e42c12Yan, Zheng if (err) 214b1ee94aa593abd03634bc3887b8e189840e42c12Yan, Zheng goto out_err; 215b1ee94aa593abd03634bc3887b8e189840e42c12Yan, Zheng 216b1ee94aa593abd03634bc3887b8e189840e42c12Yan, Zheng ceph_pagelist_encode_32(pagelist, acl && default_acl ? 2 : 1); 217b1ee94aa593abd03634bc3887b8e189840e42c12Yan, Zheng 218758582361976e9640a1cb9516c0af10cdf8e4753Christoph Hellwig if (acl) { 219b1ee94aa593abd03634bc3887b8e189840e42c12Yan, Zheng size_t len = strlen(POSIX_ACL_XATTR_ACCESS); 220b1ee94aa593abd03634bc3887b8e189840e42c12Yan, Zheng err = ceph_pagelist_reserve(pagelist, len + val_size1 + 8); 221b1ee94aa593abd03634bc3887b8e189840e42c12Yan, Zheng if (err) 222b1ee94aa593abd03634bc3887b8e189840e42c12Yan, Zheng goto out_err; 223b1ee94aa593abd03634bc3887b8e189840e42c12Yan, Zheng ceph_pagelist_encode_string(pagelist, POSIX_ACL_XATTR_ACCESS, 224b1ee94aa593abd03634bc3887b8e189840e42c12Yan, Zheng len); 225b1ee94aa593abd03634bc3887b8e189840e42c12Yan, Zheng err = posix_acl_to_xattr(&init_user_ns, acl, 226b1ee94aa593abd03634bc3887b8e189840e42c12Yan, Zheng tmp_buf, val_size1); 227b1ee94aa593abd03634bc3887b8e189840e42c12Yan, Zheng if (err < 0) 228b1ee94aa593abd03634bc3887b8e189840e42c12Yan, Zheng goto out_err; 229b1ee94aa593abd03634bc3887b8e189840e42c12Yan, Zheng ceph_pagelist_encode_32(pagelist, val_size1); 230b1ee94aa593abd03634bc3887b8e189840e42c12Yan, Zheng ceph_pagelist_append(pagelist, tmp_buf, val_size1); 231758582361976e9640a1cb9516c0af10cdf8e4753Christoph Hellwig } 232b1ee94aa593abd03634bc3887b8e189840e42c12Yan, Zheng if (default_acl) { 233b1ee94aa593abd03634bc3887b8e189840e42c12Yan, Zheng size_t len = strlen(POSIX_ACL_XATTR_DEFAULT); 234b1ee94aa593abd03634bc3887b8e189840e42c12Yan, Zheng err = ceph_pagelist_reserve(pagelist, len + val_size2 + 8); 235b1ee94aa593abd03634bc3887b8e189840e42c12Yan, Zheng if (err) 236b1ee94aa593abd03634bc3887b8e189840e42c12Yan, Zheng goto out_err; 237b1ee94aa593abd03634bc3887b8e189840e42c12Yan, Zheng err = ceph_pagelist_encode_string(pagelist, 238b1ee94aa593abd03634bc3887b8e189840e42c12Yan, Zheng POSIX_ACL_XATTR_DEFAULT, len); 239b1ee94aa593abd03634bc3887b8e189840e42c12Yan, Zheng err = posix_acl_to_xattr(&init_user_ns, default_acl, 240b1ee94aa593abd03634bc3887b8e189840e42c12Yan, Zheng tmp_buf, val_size2); 241b1ee94aa593abd03634bc3887b8e189840e42c12Yan, Zheng if (err < 0) 242b1ee94aa593abd03634bc3887b8e189840e42c12Yan, Zheng goto out_err; 243b1ee94aa593abd03634bc3887b8e189840e42c12Yan, Zheng ceph_pagelist_encode_32(pagelist, val_size2); 244b1ee94aa593abd03634bc3887b8e189840e42c12Yan, Zheng ceph_pagelist_append(pagelist, tmp_buf, val_size2); 245b1ee94aa593abd03634bc3887b8e189840e42c12Yan, Zheng } 246b1ee94aa593abd03634bc3887b8e189840e42c12Yan, Zheng 247b1ee94aa593abd03634bc3887b8e189840e42c12Yan, Zheng kfree(tmp_buf); 248b1ee94aa593abd03634bc3887b8e189840e42c12Yan, Zheng 249b1ee94aa593abd03634bc3887b8e189840e42c12Yan, Zheng info->acl = acl; 250b1ee94aa593abd03634bc3887b8e189840e42c12Yan, Zheng info->default_acl = default_acl; 251b1ee94aa593abd03634bc3887b8e189840e42c12Yan, Zheng info->pagelist = pagelist; 252b1ee94aa593abd03634bc3887b8e189840e42c12Yan, Zheng return 0; 253b1ee94aa593abd03634bc3887b8e189840e42c12Yan, Zheng 254b1ee94aa593abd03634bc3887b8e189840e42c12Yan, Zhengout_err: 255b1ee94aa593abd03634bc3887b8e189840e42c12Yan, Zheng posix_acl_release(acl); 256b1ee94aa593abd03634bc3887b8e189840e42c12Yan, Zheng posix_acl_release(default_acl); 257b1ee94aa593abd03634bc3887b8e189840e42c12Yan, Zheng kfree(tmp_buf); 258b1ee94aa593abd03634bc3887b8e189840e42c12Yan, Zheng if (pagelist) 259b1ee94aa593abd03634bc3887b8e189840e42c12Yan, Zheng ceph_pagelist_release(pagelist); 260b1ee94aa593abd03634bc3887b8e189840e42c12Yan, Zheng return err; 261b1ee94aa593abd03634bc3887b8e189840e42c12Yan, Zheng} 262b1ee94aa593abd03634bc3887b8e189840e42c12Yan, Zheng 263b1ee94aa593abd03634bc3887b8e189840e42c12Yan, Zhengvoid ceph_init_inode_acls(struct inode* inode, struct ceph_acls_info *info) 264b1ee94aa593abd03634bc3887b8e189840e42c12Yan, Zheng{ 265b1ee94aa593abd03634bc3887b8e189840e42c12Yan, Zheng if (!inode) 266b1ee94aa593abd03634bc3887b8e189840e42c12Yan, Zheng return; 267b1ee94aa593abd03634bc3887b8e189840e42c12Yan, Zheng ceph_set_cached_acl(inode, ACL_TYPE_ACCESS, info->acl); 268b1ee94aa593abd03634bc3887b8e189840e42c12Yan, Zheng ceph_set_cached_acl(inode, ACL_TYPE_DEFAULT, info->default_acl); 269b1ee94aa593abd03634bc3887b8e189840e42c12Yan, Zheng} 270b1ee94aa593abd03634bc3887b8e189840e42c12Yan, Zheng 271b1ee94aa593abd03634bc3887b8e189840e42c12Yan, Zhengvoid ceph_release_acls_info(struct ceph_acls_info *info) 272b1ee94aa593abd03634bc3887b8e189840e42c12Yan, Zheng{ 273b1ee94aa593abd03634bc3887b8e189840e42c12Yan, Zheng posix_acl_release(info->acl); 274b1ee94aa593abd03634bc3887b8e189840e42c12Yan, Zheng posix_acl_release(info->default_acl); 275b1ee94aa593abd03634bc3887b8e189840e42c12Yan, Zheng if (info->pagelist) 276b1ee94aa593abd03634bc3887b8e189840e42c12Yan, Zheng ceph_pagelist_release(info->pagelist); 2777221fe4c2ed72804b28633c8e0217d65abb0023fGuangliang Zhao} 278