xattr.c (fa3cacf544636b2dc48cfb2f277a2071f14d66a2) xattr.c (195c52bdd5d5ecfdabf5a7c6159efe299e534f84)
1// SPDX-License-Identifier: GPL-2.0
2/*
3 *
4 * Copyright (C) 2019-2021 Paragon Software GmbH, All rights reserved.
5 *
6 */
7
8#include <linux/blkdev.h>

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105 size = le32_to_cpu((*info)->size);
106 if (size > ni->mi.sbi->ea_max_size)
107 return -EFBIG;
108
109 if (attr_size(attr_ea) > ni->mi.sbi->ea_max_size)
110 return -EFBIG;
111
112 /* Allocate memory for packed Ea */
1// SPDX-License-Identifier: GPL-2.0
2/*
3 *
4 * Copyright (C) 2019-2021 Paragon Software GmbH, All rights reserved.
5 *
6 */
7
8#include <linux/blkdev.h>

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105 size = le32_to_cpu((*info)->size);
106 if (size > ni->mi.sbi->ea_max_size)
107 return -EFBIG;
108
109 if (attr_size(attr_ea) > ni->mi.sbi->ea_max_size)
110 return -EFBIG;
111
112 /* Allocate memory for packed Ea */
113 ea_p = ntfs_malloc(size + add_bytes);
113 ea_p = kmalloc(size + add_bytes, GFP_NOFS);
114 if (!ea_p)
115 return -ENOMEM;
116
117 if (attr_ea->non_res) {
118 struct runs_tree run;
119
120 run_init(&run);
121

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137 memcpy(ea_p, p, size);
138 }
139
140 memset(Add2Ptr(ea_p, size), 0, add_bytes);
141 *ea = ea_p;
142 return 0;
143
144out:
114 if (!ea_p)
115 return -ENOMEM;
116
117 if (attr_ea->non_res) {
118 struct runs_tree run;
119
120 run_init(&run);
121

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137 memcpy(ea_p, p, size);
138 }
139
140 memset(Add2Ptr(ea_p, size), 0, add_bytes);
141 *ea = ea_p;
142 return 0;
143
144out:
145 ntfs_free(ea_p);
145 kfree(ea_p);
146 *ea = NULL;
147 return err;
148}
149
150/*
151 * ntfs_list_ea
152 *
153 * copy a list of xattrs names into the buffer

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188 memcpy(buffer + ret, ea->name, ea->name_len);
189 buffer[ret + ea->name_len] = 0;
190 }
191
192 ret += ea->name_len + 1;
193 }
194
195out:
146 *ea = NULL;
147 return err;
148}
149
150/*
151 * ntfs_list_ea
152 *
153 * copy a list of xattrs names into the buffer

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188 memcpy(buffer + ret, ea->name, ea->name_len);
189 buffer[ret + ea->name_len] = 0;
190 }
191
192 ret += ea->name_len + 1;
193 }
194
195out:
196 ntfs_free(ea_all);
196 kfree(ea_all);
197 return err ? err : ret;
198}
199
200static int ntfs_get_ea(struct inode *inode, const char *name, size_t name_len,
201 void *buffer, size_t size, size_t *required)
202{
203 struct ntfs_inode *ni = ntfs_i(inode);
204 const struct EA_INFO *info;

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246 *required = len;
247 goto out;
248 }
249
250 memcpy(buffer, ea->name + ea->name_len + 1, len);
251 err = 0;
252
253out:
197 return err ? err : ret;
198}
199
200static int ntfs_get_ea(struct inode *inode, const char *name, size_t name_len,
201 void *buffer, size_t size, size_t *required)
202{
203 struct ntfs_inode *ni = ntfs_i(inode);
204 const struct EA_INFO *info;

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246 *required = len;
247 goto out;
248 }
249
250 memcpy(buffer, ea->name + ea->name_len + 1, len);
251 err = 0;
252
253out:
254 ntfs_free(ea_all);
254 kfree(ea_all);
255 if (!required)
256 ni_unlock(ni);
257
258 return err ? err : len;
259}
260
261static noinline int ntfs_set_ea(struct inode *inode, const char *name,
262 size_t name_len, const void *value,

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347 }
348 } else {
349 if (flags & XATTR_REPLACE) {
350 err = -ENODATA;
351 goto out;
352 }
353
354 if (!ea_all) {
255 if (!required)
256 ni_unlock(ni);
257
258 return err ? err : len;
259}
260
261static noinline int ntfs_set_ea(struct inode *inode, const char *name,
262 size_t name_len, const void *value,

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347 }
348 } else {
349 if (flags & XATTR_REPLACE) {
350 err = -ENODATA;
351 goto out;
352 }
353
354 if (!ea_all) {
355 ea_all = ntfs_zalloc(add);
355 ea_all = kzalloc(add, GFP_NOFS);
356 if (!ea_all) {
357 err = -ENOMEM;
358 goto out;
359 }
360 }
361 }
362
363 /* append new xattr */

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469 ni->ni_flags |= NI_FLAG_UPDATE_PARENT;
470 mark_inode_dirty(&ni->vfs_inode);
471
472out:
473 if (!locked)
474 ni_unlock(ni);
475
476 run_close(&ea_run);
356 if (!ea_all) {
357 err = -ENOMEM;
358 goto out;
359 }
360 }
361 }
362
363 /* append new xattr */

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469 ni->ni_flags |= NI_FLAG_UPDATE_PARENT;
470 mark_inode_dirty(&ni->vfs_inode);
471
472out:
473 if (!locked)
474 ni_unlock(ni);
475
476 run_close(&ea_run);
477 ntfs_free(ea_all);
477 kfree(ea_all);
478
479 return err;
480}
481
482#ifdef CONFIG_NTFS3_FS_POSIX_ACL
483static inline void ntfs_posix_acl_release(struct posix_acl *acl)
484{
485 if (acl && refcount_dec_and_test(&acl->a_refcount))

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594 return -EINVAL;
595 }
596
597 if (!acl) {
598 size = 0;
599 value = NULL;
600 } else {
601 size = posix_acl_xattr_size(acl->a_count);
478
479 return err;
480}
481
482#ifdef CONFIG_NTFS3_FS_POSIX_ACL
483static inline void ntfs_posix_acl_release(struct posix_acl *acl)
484{
485 if (acl && refcount_dec_and_test(&acl->a_refcount))

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594 return -EINVAL;
595 }
596
597 if (!acl) {
598 size = 0;
599 value = NULL;
600 } else {
601 size = posix_acl_xattr_size(acl->a_count);
602 value = ntfs_malloc(size);
602 value = kmalloc(size, GFP_NOFS);
603 if (!value)
604 return -ENOMEM;
605
606 err = posix_acl_to_xattr(mnt_userns, acl, value, size);
607 if (err < 0)
608 goto out;
609 }
610
611 err = ntfs_set_ea(inode, name, name_len, value, size,
612 acl ? 0 : XATTR_REPLACE, locked);
613 if (!err)
614 set_cached_acl(inode, type, acl);
615
616out:
603 if (!value)
604 return -ENOMEM;
605
606 err = posix_acl_to_xattr(mnt_userns, acl, value, size);
607 if (err < 0)
608 goto out;
609 }
610
611 err = ntfs_set_ea(inode, name, name_len, value, size,
612 acl ? 0 : XATTR_REPLACE, locked);
613 if (!err)
614 set_cached_acl(inode, type, acl);
615
616out:
617 ntfs_free(value);
617 kfree(value);
618
619 return err;
620}
621
622/*
623 * ntfs_set_acl
624 *
625 * inode_operations::set_acl

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875 if (!buffer) {
876 err = sd_size;
877 } else if (size < sd_size) {
878 err = -ENODATA;
879 } else {
880 err = sd_size;
881 memcpy(buffer, sd, sd_size);
882 }
618
619 return err;
620}
621
622/*
623 * ntfs_set_acl
624 *
625 * inode_operations::set_acl

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875 if (!buffer) {
876 err = sd_size;
877 } else if (size < sd_size) {
878 err = -ENODATA;
879 } else {
880 err = sd_size;
881 memcpy(buffer, sd, sd_size);
882 }
883 ntfs_free(sd);
883 kfree(sd);
884 goto out;
885 }
886
887#ifdef CONFIG_NTFS3_FS_POSIX_ACL
888 if ((name_len == sizeof(XATTR_NAME_POSIX_ACL_ACCESS) - 1 &&
889 !memcmp(name, XATTR_NAME_POSIX_ACL_ACCESS,
890 sizeof(XATTR_NAME_POSIX_ACL_ACCESS))) ||
891 (name_len == sizeof(XATTR_NAME_POSIX_ACL_DEFAULT) - 1 &&

--- 237 unchanged lines hidden --- 		884 goto out;
885 }
886
887#ifdef CONFIG_NTFS3_FS_POSIX_ACL
888 if ((name_len == sizeof(XATTR_NAME_POSIX_ACL_ACCESS) - 1 &&
889 !memcmp(name, XATTR_NAME_POSIX_ACL_ACCESS,
890 sizeof(XATTR_NAME_POSIX_ACL_ACCESS))) ||
891 (name_len == sizeof(XATTR_NAME_POSIX_ACL_DEFAULT) - 1 &&

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