^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * fs/f2fs/xattr.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Copyright (c) 2012 Samsung Electronics Co., Ltd.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * http://www.samsung.com/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * Portions of this code from linux/fs/ext2/xattr.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) * Copyright (C) 2001-2003 Andreas Gruenbacher <agruen@suse.de>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) * Fix by Harrison Xing <harrison@mountainviewdata.com>.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) * Extended attributes for symlinks and special files added per
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) * suggestion of Luka Renko <luka.renko@hermes.si>.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) * xattr consolidation Copyright (c) 2004 James Morris <jmorris@redhat.com>,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) * Red Hat Inc.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <linux/rwsem.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <linux/f2fs_fs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <linux/security.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include <linux/posix_acl_xattr.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #include "f2fs.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #include "xattr.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #include "segment.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) static void *xattr_alloc(struct f2fs_sb_info *sbi, int size, bool *is_inline)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) if (likely(size == sbi->inline_xattr_slab_size)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) *is_inline = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) return kmem_cache_zalloc(sbi->inline_xattr_slab, GFP_NOFS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) *is_inline = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) return f2fs_kzalloc(sbi, size, GFP_NOFS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) static void xattr_free(struct f2fs_sb_info *sbi, void *xattr_addr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) bool is_inline)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) if (is_inline)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) kmem_cache_free(sbi->inline_xattr_slab, xattr_addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) kfree(xattr_addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) static int f2fs_xattr_generic_get(const struct xattr_handler *handler,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) struct dentry *unused, struct inode *inode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) const char *name, void *buffer, size_t size, int flags)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) switch (handler->flags) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) case F2FS_XATTR_INDEX_USER:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) if (!test_opt(sbi, XATTR_USER))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) return -EOPNOTSUPP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) case F2FS_XATTR_INDEX_TRUSTED:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) case F2FS_XATTR_INDEX_SECURITY:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) return f2fs_getxattr(inode, handler->flags, name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) buffer, size, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) static int f2fs_xattr_generic_set(const struct xattr_handler *handler,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) struct dentry *unused, struct inode *inode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) const char *name, const void *value,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) size_t size, int flags)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) switch (handler->flags) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) case F2FS_XATTR_INDEX_USER:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) if (!test_opt(sbi, XATTR_USER))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) return -EOPNOTSUPP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) case F2FS_XATTR_INDEX_TRUSTED:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) case F2FS_XATTR_INDEX_SECURITY:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) return f2fs_setxattr(inode, handler->flags, name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) value, size, NULL, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) static bool f2fs_xattr_user_list(struct dentry *dentry)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) struct f2fs_sb_info *sbi = F2FS_SB(dentry->d_sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) return test_opt(sbi, XATTR_USER);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) static bool f2fs_xattr_trusted_list(struct dentry *dentry)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) return capable(CAP_SYS_ADMIN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) static int f2fs_xattr_advise_get(const struct xattr_handler *handler,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) struct dentry *unused, struct inode *inode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) const char *name, void *buffer, size_t size, int flags)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) if (buffer)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) *((char *)buffer) = F2FS_I(inode)->i_advise;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) return sizeof(char);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) static int f2fs_xattr_advise_set(const struct xattr_handler *handler,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) struct dentry *unused, struct inode *inode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) const char *name, const void *value,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) size_t size, int flags)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) unsigned char old_advise = F2FS_I(inode)->i_advise;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) unsigned char new_advise;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) if (!inode_owner_or_capable(inode))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) return -EPERM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) if (value == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) new_advise = *(char *)value;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) if (new_advise & ~FADVISE_MODIFIABLE_BITS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) new_advise = new_advise & FADVISE_MODIFIABLE_BITS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) new_advise |= old_advise & ~FADVISE_MODIFIABLE_BITS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) F2FS_I(inode)->i_advise = new_advise;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) f2fs_mark_inode_dirty_sync(inode, true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) return 0;
^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) #ifdef CONFIG_F2FS_FS_SECURITY
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) static int f2fs_initxattrs(struct inode *inode, const struct xattr *xattr_array,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) void *page)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) const struct xattr *xattr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) int err = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) for (xattr = xattr_array; xattr->name != NULL; xattr++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) err = f2fs_setxattr(inode, F2FS_XATTR_INDEX_SECURITY,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) xattr->name, xattr->value,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) xattr->value_len, (struct page *)page, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) int f2fs_init_security(struct inode *inode, struct inode *dir,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) const struct qstr *qstr, struct page *ipage)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) return security_inode_init_security(inode, dir, qstr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) &f2fs_initxattrs, ipage);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) const struct xattr_handler f2fs_xattr_user_handler = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) .prefix = XATTR_USER_PREFIX,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) .flags = F2FS_XATTR_INDEX_USER,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) .list = f2fs_xattr_user_list,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) .get = f2fs_xattr_generic_get,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) .set = f2fs_xattr_generic_set,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) const struct xattr_handler f2fs_xattr_trusted_handler = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) .prefix = XATTR_TRUSTED_PREFIX,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) .flags = F2FS_XATTR_INDEX_TRUSTED,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) .list = f2fs_xattr_trusted_list,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) .get = f2fs_xattr_generic_get,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) .set = f2fs_xattr_generic_set,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) const struct xattr_handler f2fs_xattr_advise_handler = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) .name = F2FS_SYSTEM_ADVISE_NAME,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) .flags = F2FS_XATTR_INDEX_ADVISE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) .get = f2fs_xattr_advise_get,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) .set = f2fs_xattr_advise_set,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) const struct xattr_handler f2fs_xattr_security_handler = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) .prefix = XATTR_SECURITY_PREFIX,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) .flags = F2FS_XATTR_INDEX_SECURITY,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) .get = f2fs_xattr_generic_get,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) .set = f2fs_xattr_generic_set,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) static const struct xattr_handler *f2fs_xattr_handler_map[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) [F2FS_XATTR_INDEX_USER] = &f2fs_xattr_user_handler,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) #ifdef CONFIG_F2FS_FS_POSIX_ACL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) [F2FS_XATTR_INDEX_POSIX_ACL_ACCESS] = &posix_acl_access_xattr_handler,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) [F2FS_XATTR_INDEX_POSIX_ACL_DEFAULT] = &posix_acl_default_xattr_handler,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) [F2FS_XATTR_INDEX_TRUSTED] = &f2fs_xattr_trusted_handler,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) #ifdef CONFIG_F2FS_FS_SECURITY
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) [F2FS_XATTR_INDEX_SECURITY] = &f2fs_xattr_security_handler,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) [F2FS_XATTR_INDEX_ADVISE] = &f2fs_xattr_advise_handler,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) const struct xattr_handler *f2fs_xattr_handlers[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) &f2fs_xattr_user_handler,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) #ifdef CONFIG_F2FS_FS_POSIX_ACL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) &posix_acl_access_xattr_handler,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) &posix_acl_default_xattr_handler,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) &f2fs_xattr_trusted_handler,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) #ifdef CONFIG_F2FS_FS_SECURITY
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) &f2fs_xattr_security_handler,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) &f2fs_xattr_advise_handler,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) static inline const struct xattr_handler *f2fs_xattr_handler(int index)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) const struct xattr_handler *handler = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) if (index > 0 && index < ARRAY_SIZE(f2fs_xattr_handler_map))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) handler = f2fs_xattr_handler_map[index];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) return handler;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) static struct f2fs_xattr_entry *__find_xattr(void *base_addr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) void *last_base_addr, int index,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) size_t len, const char *name)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) struct f2fs_xattr_entry *entry;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) list_for_each_xattr(entry, base_addr) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) if ((void *)(entry) + sizeof(__u32) > last_base_addr ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) (void *)XATTR_NEXT_ENTRY(entry) > last_base_addr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) if (entry->e_name_index != index)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) if (entry->e_name_len != len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) if (!memcmp(entry->e_name, name, len))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) return entry;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) static struct f2fs_xattr_entry *__find_inline_xattr(struct inode *inode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) void *base_addr, void **last_addr, int index,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) size_t len, const char *name)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) struct f2fs_xattr_entry *entry;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) unsigned int inline_size = inline_xattr_size(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) void *max_addr = base_addr + inline_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) list_for_each_xattr(entry, base_addr) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) if ((void *)entry + sizeof(__u32) > max_addr ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) (void *)XATTR_NEXT_ENTRY(entry) > max_addr) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) *last_addr = entry;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) if (entry->e_name_index != index)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) if (entry->e_name_len != len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) if (!memcmp(entry->e_name, name, len))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) /* inline xattr header or entry across max inline xattr size */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) if (IS_XATTR_LAST_ENTRY(entry) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) (void *)entry + sizeof(__u32) > max_addr) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) *last_addr = entry;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) return entry;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) static int read_inline_xattr(struct inode *inode, struct page *ipage,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) void *txattr_addr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) unsigned int inline_size = inline_xattr_size(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) struct page *page = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) void *inline_addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) if (ipage) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) inline_addr = inline_xattr_addr(inode, ipage);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) page = f2fs_get_node_page(sbi, inode->i_ino);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) if (IS_ERR(page))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) return PTR_ERR(page);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) inline_addr = inline_xattr_addr(inode, page);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) memcpy(txattr_addr, inline_addr, inline_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) f2fs_put_page(page, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) static int read_xattr_block(struct inode *inode, void *txattr_addr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) nid_t xnid = F2FS_I(inode)->i_xattr_nid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) unsigned int inline_size = inline_xattr_size(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) struct page *xpage;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) void *xattr_addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) /* The inode already has an extended attribute block. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) xpage = f2fs_get_node_page(sbi, xnid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) if (IS_ERR(xpage))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) return PTR_ERR(xpage);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) xattr_addr = page_address(xpage);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) memcpy(txattr_addr + inline_size, xattr_addr, VALID_XATTR_BLOCK_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) f2fs_put_page(xpage, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) static int lookup_all_xattrs(struct inode *inode, struct page *ipage,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) unsigned int index, unsigned int len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) const char *name, struct f2fs_xattr_entry **xe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) void **base_addr, int *base_size,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) bool *is_inline)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) void *cur_addr, *txattr_addr, *last_txattr_addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) void *last_addr = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) nid_t xnid = F2FS_I(inode)->i_xattr_nid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) unsigned int inline_size = inline_xattr_size(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) if (!xnid && !inline_size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) return -ENODATA;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) *base_size = XATTR_SIZE(inode) + XATTR_PADDING_SIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) txattr_addr = xattr_alloc(F2FS_I_SB(inode), *base_size, is_inline);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) if (!txattr_addr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) last_txattr_addr = (void *)txattr_addr + XATTR_SIZE(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) /* read from inline xattr */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) if (inline_size) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) err = read_inline_xattr(inode, ipage, txattr_addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) *xe = __find_inline_xattr(inode, txattr_addr, &last_addr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) index, len, name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) if (*xe) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) *base_size = inline_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) goto check;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) /* read from xattr node block */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) if (xnid) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) err = read_xattr_block(inode, txattr_addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) if (last_addr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) cur_addr = XATTR_HDR(last_addr) - 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) cur_addr = txattr_addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) *xe = __find_xattr(cur_addr, last_txattr_addr, index, len, name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) if (!*xe) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) f2fs_err(F2FS_I_SB(inode), "inode (%lu) has corrupted xattr",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) inode->i_ino);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) set_sbi_flag(F2FS_I_SB(inode), SBI_NEED_FSCK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) err = -EFSCORRUPTED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) check:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) if (IS_XATTR_LAST_ENTRY(*xe)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) err = -ENODATA;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) *base_addr = txattr_addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) xattr_free(F2FS_I_SB(inode), txattr_addr, *is_inline);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) static int read_all_xattrs(struct inode *inode, struct page *ipage,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) void **base_addr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) struct f2fs_xattr_header *header;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) nid_t xnid = F2FS_I(inode)->i_xattr_nid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) unsigned int size = VALID_XATTR_BLOCK_SIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) unsigned int inline_size = inline_xattr_size(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) void *txattr_addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) txattr_addr = f2fs_kzalloc(F2FS_I_SB(inode),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) inline_size + size + XATTR_PADDING_SIZE, GFP_NOFS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) if (!txattr_addr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) /* read from inline xattr */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) if (inline_size) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) err = read_inline_xattr(inode, ipage, txattr_addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) goto fail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) /* read from xattr node block */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) if (xnid) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) err = read_xattr_block(inode, txattr_addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) goto fail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) header = XATTR_HDR(txattr_addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) /* never been allocated xattrs */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) if (le32_to_cpu(header->h_magic) != F2FS_XATTR_MAGIC) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) header->h_magic = cpu_to_le32(F2FS_XATTR_MAGIC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) header->h_refcount = cpu_to_le32(1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) *base_addr = txattr_addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) fail:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) kfree(txattr_addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) static inline int write_all_xattrs(struct inode *inode, __u32 hsize,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) void *txattr_addr, struct page *ipage)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) size_t inline_size = inline_xattr_size(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) struct page *in_page = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) void *xattr_addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) void *inline_addr = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) struct page *xpage;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) nid_t new_nid = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) int err = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) if (hsize > inline_size && !F2FS_I(inode)->i_xattr_nid)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) if (!f2fs_alloc_nid(sbi, &new_nid))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) return -ENOSPC;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) /* write to inline xattr */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) if (inline_size) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) if (ipage) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) inline_addr = inline_xattr_addr(inode, ipage);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) in_page = f2fs_get_node_page(sbi, inode->i_ino);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) if (IS_ERR(in_page)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) f2fs_alloc_nid_failed(sbi, new_nid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) return PTR_ERR(in_page);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) inline_addr = inline_xattr_addr(inode, in_page);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) f2fs_wait_on_page_writeback(ipage ? ipage : in_page,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) NODE, true, true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) /* no need to use xattr node block */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) if (hsize <= inline_size) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) err = f2fs_truncate_xattr_node(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) f2fs_alloc_nid_failed(sbi, new_nid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) if (err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) f2fs_put_page(in_page, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) memcpy(inline_addr, txattr_addr, inline_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) set_page_dirty(ipage ? ipage : in_page);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) goto in_page_out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) /* write to xattr node block */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) if (F2FS_I(inode)->i_xattr_nid) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) xpage = f2fs_get_node_page(sbi, F2FS_I(inode)->i_xattr_nid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) if (IS_ERR(xpage)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) err = PTR_ERR(xpage);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) f2fs_alloc_nid_failed(sbi, new_nid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) goto in_page_out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) f2fs_bug_on(sbi, new_nid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) f2fs_wait_on_page_writeback(xpage, NODE, true, true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) struct dnode_of_data dn;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) set_new_dnode(&dn, inode, NULL, NULL, new_nid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) xpage = f2fs_new_node_page(&dn, XATTR_NODE_OFFSET);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492) if (IS_ERR(xpage)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) err = PTR_ERR(xpage);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) f2fs_alloc_nid_failed(sbi, new_nid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) goto in_page_out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) f2fs_alloc_nid_done(sbi, new_nid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) xattr_addr = page_address(xpage);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) if (inline_size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) memcpy(inline_addr, txattr_addr, inline_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) memcpy(xattr_addr, txattr_addr + inline_size, VALID_XATTR_BLOCK_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) if (inline_size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) set_page_dirty(ipage ? ipage : in_page);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) set_page_dirty(xpage);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) f2fs_put_page(xpage, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510) in_page_out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) f2fs_put_page(in_page, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) int f2fs_getxattr(struct inode *inode, int index, const char *name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516) void *buffer, size_t buffer_size, struct page *ipage)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) struct f2fs_xattr_entry *entry = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520) unsigned int size, len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) void *base_addr = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) int base_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) bool is_inline;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525) if (name == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528) len = strlen(name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529) if (len > F2FS_NAME_LEN)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) return -ERANGE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) f2fs_down_read(&F2FS_I(inode)->i_xattr_sem);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533) error = lookup_all_xattrs(inode, ipage, index, len, name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534) &entry, &base_addr, &base_size, &is_inline);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535) f2fs_up_read(&F2FS_I(inode)->i_xattr_sem);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539) size = le16_to_cpu(entry->e_value_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541) if (buffer && size > buffer_size) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542) error = -ERANGE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546) if (buffer) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547) char *pval = entry->e_name + entry->e_name_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549) if (base_size - (pval - (char *)base_addr) < size) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550) error = -ERANGE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553) memcpy(buffer, pval, size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555) error = size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557) xattr_free(F2FS_I_SB(inode), base_addr, is_inline);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561) ssize_t f2fs_listxattr(struct dentry *dentry, char *buffer, size_t buffer_size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563) struct inode *inode = d_inode(dentry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564) struct f2fs_xattr_entry *entry;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565) void *base_addr, *last_base_addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567) size_t rest = buffer_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569) f2fs_down_read(&F2FS_I(inode)->i_xattr_sem);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570) error = read_all_xattrs(inode, NULL, &base_addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571) f2fs_up_read(&F2FS_I(inode)->i_xattr_sem);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575) last_base_addr = (void *)base_addr + XATTR_SIZE(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577) list_for_each_xattr(entry, base_addr) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578) const struct xattr_handler *handler =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579) f2fs_xattr_handler(entry->e_name_index);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580) const char *prefix;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581) size_t prefix_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582) size_t size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584) if ((void *)(entry) + sizeof(__u32) > last_base_addr ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585) (void *)XATTR_NEXT_ENTRY(entry) > last_base_addr) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586) f2fs_err(F2FS_I_SB(inode), "inode (%lu) has corrupted xattr",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 587) inode->i_ino);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 588) set_sbi_flag(F2FS_I_SB(inode), SBI_NEED_FSCK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 589) error = -EFSCORRUPTED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 590) goto cleanup;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 591) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 592)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 593) if (!handler || (handler->list && !handler->list(dentry)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 594) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 595)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 596) prefix = xattr_prefix(handler);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 597) prefix_len = strlen(prefix);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 598) size = prefix_len + entry->e_name_len + 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 599) if (buffer) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 600) if (size > rest) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 601) error = -ERANGE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 602) goto cleanup;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 603) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 604) memcpy(buffer, prefix, prefix_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 605) buffer += prefix_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 606) memcpy(buffer, entry->e_name, entry->e_name_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 607) buffer += entry->e_name_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 608) *buffer++ = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 609) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 610) rest -= size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 611) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 612) error = buffer_size - rest;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 613) cleanup:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 614) kfree(base_addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 615) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 616) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 617)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 618) static bool f2fs_xattr_value_same(struct f2fs_xattr_entry *entry,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 619) const void *value, size_t size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 620) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 621) void *pval = entry->e_name + entry->e_name_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 622)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 623) return (le16_to_cpu(entry->e_value_size) == size) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 624) !memcmp(pval, value, size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 625) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 626)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 627) static int __f2fs_setxattr(struct inode *inode, int index,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 628) const char *name, const void *value, size_t size,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 629) struct page *ipage, int flags)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 630) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 631) struct f2fs_xattr_entry *here, *last;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 632) void *base_addr, *last_base_addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 633) int found, newsize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 634) size_t len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 635) __u32 new_hsize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 636) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 637)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 638) if (name == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 639) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 640)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 641) if (value == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 642) size = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 643)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 644) len = strlen(name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 645)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 646) if (len > F2FS_NAME_LEN)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 647) return -ERANGE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 648)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 649) if (size > MAX_VALUE_LEN(inode))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 650) return -E2BIG;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 651)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 652) error = read_all_xattrs(inode, ipage, &base_addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 653) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 654) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 655)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 656) last_base_addr = (void *)base_addr + XATTR_SIZE(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 657)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 658) /* find entry with wanted name. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 659) here = __find_xattr(base_addr, last_base_addr, index, len, name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 660) if (!here) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 661) f2fs_err(F2FS_I_SB(inode), "inode (%lu) has corrupted xattr",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 662) inode->i_ino);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 663) set_sbi_flag(F2FS_I_SB(inode), SBI_NEED_FSCK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 664) error = -EFSCORRUPTED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 665) goto exit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 666) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 667)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 668) found = IS_XATTR_LAST_ENTRY(here) ? 0 : 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 669)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 670) if (found) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 671) if ((flags & XATTR_CREATE)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 672) error = -EEXIST;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 673) goto exit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 674) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 675)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 676) if (value && f2fs_xattr_value_same(here, value, size))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 677) goto same;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 678) } else if ((flags & XATTR_REPLACE)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 679) error = -ENODATA;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 680) goto exit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 681) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 682)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 683) last = here;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 684) while (!IS_XATTR_LAST_ENTRY(last)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 685) if ((void *)(last) + sizeof(__u32) > last_base_addr ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 686) (void *)XATTR_NEXT_ENTRY(last) > last_base_addr) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 687) f2fs_err(F2FS_I_SB(inode), "inode (%lu) has invalid last xattr entry, entry_size: %zu",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 688) inode->i_ino, ENTRY_SIZE(last));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 689) set_sbi_flag(F2FS_I_SB(inode), SBI_NEED_FSCK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 690) error = -EFSCORRUPTED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 691) goto exit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 692) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 693) last = XATTR_NEXT_ENTRY(last);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 694) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 695)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 696) newsize = XATTR_ALIGN(sizeof(struct f2fs_xattr_entry) + len + size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 697)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 698) /* 1. Check space */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 699) if (value) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 700) int free;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 701) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 702) * If value is NULL, it is remove operation.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 703) * In case of update operation, we calculate free.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 704) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 705) free = MIN_OFFSET(inode) - ((char *)last - (char *)base_addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 706) if (found)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 707) free = free + ENTRY_SIZE(here);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 708)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 709) if (unlikely(free < newsize)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 710) error = -E2BIG;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 711) goto exit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 712) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 713) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 714)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 715) /* 2. Remove old entry */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 716) if (found) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 717) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 718) * If entry is found, remove old entry.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 719) * If not found, remove operation is not needed.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 720) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 721) struct f2fs_xattr_entry *next = XATTR_NEXT_ENTRY(here);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 722) int oldsize = ENTRY_SIZE(here);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 723)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 724) memmove(here, next, (char *)last - (char *)next);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 725) last = (struct f2fs_xattr_entry *)((char *)last - oldsize);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 726) memset(last, 0, oldsize);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 727) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 728)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 729) new_hsize = (char *)last - (char *)base_addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 730)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 731) /* 3. Write new entry */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 732) if (value) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 733) char *pval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 734) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 735) * Before we come here, old entry is removed.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 736) * We just write new entry.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 737) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 738) last->e_name_index = index;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 739) last->e_name_len = len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 740) memcpy(last->e_name, name, len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 741) pval = last->e_name + len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 742) memcpy(pval, value, size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 743) last->e_value_size = cpu_to_le16(size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 744) new_hsize += newsize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 745) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 746)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 747) error = write_all_xattrs(inode, new_hsize, base_addr, ipage);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 748) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 749) goto exit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 750)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 751) if (index == F2FS_XATTR_INDEX_ENCRYPTION &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 752) !strcmp(name, F2FS_XATTR_NAME_ENCRYPTION_CONTEXT))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 753) f2fs_set_encrypted_inode(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 754) f2fs_mark_inode_dirty_sync(inode, true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 755) if (!error && S_ISDIR(inode->i_mode))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 756) set_sbi_flag(F2FS_I_SB(inode), SBI_NEED_CP);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 757)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 758) same:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 759) if (is_inode_flag_set(inode, FI_ACL_MODE)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 760) inode->i_mode = F2FS_I(inode)->i_acl_mode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 761) inode->i_ctime = current_time(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 762) clear_inode_flag(inode, FI_ACL_MODE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 763) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 764)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 765) exit:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 766) kfree(base_addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 767) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 768) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 769)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 770) int f2fs_setxattr(struct inode *inode, int index, const char *name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 771) const void *value, size_t size,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 772) struct page *ipage, int flags)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 773) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 774) struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 775) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 776)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 777) if (unlikely(f2fs_cp_error(sbi)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 778) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 779) if (!f2fs_is_checkpoint_ready(sbi))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 780) return -ENOSPC;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 781)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 782) err = dquot_initialize(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 783) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 784) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 785)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 786) /* this case is only from f2fs_init_inode_metadata */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 787) if (ipage)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 788) return __f2fs_setxattr(inode, index, name, value,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 789) size, ipage, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 790) f2fs_balance_fs(sbi, true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 791)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 792) f2fs_lock_op(sbi);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 793) f2fs_down_write(&F2FS_I(inode)->i_xattr_sem);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 794) err = __f2fs_setxattr(inode, index, name, value, size, ipage, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 795) f2fs_up_write(&F2FS_I(inode)->i_xattr_sem);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 796) f2fs_unlock_op(sbi);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 797)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 798) f2fs_update_time(sbi, REQ_TIME);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 799) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 800) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 801)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 802) int f2fs_init_xattr_caches(struct f2fs_sb_info *sbi)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 803) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 804) dev_t dev = sbi->sb->s_bdev->bd_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 805) char slab_name[32];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 806)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 807) sprintf(slab_name, "f2fs_xattr_entry-%u:%u", MAJOR(dev), MINOR(dev));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 808)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 809) sbi->inline_xattr_slab_size = F2FS_OPTION(sbi).inline_xattr_size *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 810) sizeof(__le32) + XATTR_PADDING_SIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 811)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 812) sbi->inline_xattr_slab = f2fs_kmem_cache_create(slab_name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 813) sbi->inline_xattr_slab_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 814) if (!sbi->inline_xattr_slab)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 815) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 816)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 817) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 818) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 819)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 820) void f2fs_destroy_xattr_caches(struct f2fs_sb_info *sbi)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 821) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 822) kmem_cache_destroy(sbi->inline_xattr_slab);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 823) }
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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