^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) * linux/fs/ext2/acl.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Copyright (C) 2001-2003 Andreas Gruenbacher, <agruen@suse.de>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include <linux/sched.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/fs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include "ext2.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include "xattr.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include "acl.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) * Convert from filesystem to in-memory representation.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) static struct posix_acl *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) ext2_acl_from_disk(const void *value, size_t size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) const char *end = (char *)value + size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) int n, count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) struct posix_acl *acl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) if (!value)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) if (size < sizeof(ext2_acl_header))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) return ERR_PTR(-EINVAL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) if (((ext2_acl_header *)value)->a_version !=
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) cpu_to_le32(EXT2_ACL_VERSION))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) return ERR_PTR(-EINVAL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) value = (char *)value + sizeof(ext2_acl_header);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) count = ext2_acl_count(size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) if (count < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) return ERR_PTR(-EINVAL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) if (count == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) acl = posix_acl_alloc(count, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) if (!acl)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) return ERR_PTR(-ENOMEM);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) for (n=0; n < count; n++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) ext2_acl_entry *entry =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) (ext2_acl_entry *)value;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) if ((char *)value + sizeof(ext2_acl_entry_short) > end)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) goto fail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) acl->a_entries[n].e_tag = le16_to_cpu(entry->e_tag);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) acl->a_entries[n].e_perm = le16_to_cpu(entry->e_perm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) switch(acl->a_entries[n].e_tag) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) case ACL_USER_OBJ:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) case ACL_GROUP_OBJ:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) case ACL_MASK:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) case ACL_OTHER:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) value = (char *)value +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) sizeof(ext2_acl_entry_short);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) case ACL_USER:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) value = (char *)value + sizeof(ext2_acl_entry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) if ((char *)value > end)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) goto fail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) acl->a_entries[n].e_uid =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) make_kuid(&init_user_ns,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) le32_to_cpu(entry->e_id));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) case ACL_GROUP:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) value = (char *)value + sizeof(ext2_acl_entry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) if ((char *)value > end)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) goto fail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) acl->a_entries[n].e_gid =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) make_kgid(&init_user_ns,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) le32_to_cpu(entry->e_id));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) goto fail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) if (value != end)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) goto fail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) return acl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) fail:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) posix_acl_release(acl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) return ERR_PTR(-EINVAL);
^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) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) * Convert from in-memory to filesystem representation.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) static void *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) ext2_acl_to_disk(const struct posix_acl *acl, size_t *size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) ext2_acl_header *ext_acl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) char *e;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) size_t n;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) *size = ext2_acl_size(acl->a_count);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) ext_acl = kmalloc(sizeof(ext2_acl_header) + acl->a_count *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) sizeof(ext2_acl_entry), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) if (!ext_acl)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) return ERR_PTR(-ENOMEM);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) ext_acl->a_version = cpu_to_le32(EXT2_ACL_VERSION);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) e = (char *)ext_acl + sizeof(ext2_acl_header);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) for (n=0; n < acl->a_count; n++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) const struct posix_acl_entry *acl_e = &acl->a_entries[n];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) ext2_acl_entry *entry = (ext2_acl_entry *)e;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) entry->e_tag = cpu_to_le16(acl_e->e_tag);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) entry->e_perm = cpu_to_le16(acl_e->e_perm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) switch(acl_e->e_tag) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) case ACL_USER:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) entry->e_id = cpu_to_le32(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) from_kuid(&init_user_ns, acl_e->e_uid));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) e += sizeof(ext2_acl_entry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) case ACL_GROUP:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) entry->e_id = cpu_to_le32(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) from_kgid(&init_user_ns, acl_e->e_gid));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) e += sizeof(ext2_acl_entry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) case ACL_USER_OBJ:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) case ACL_GROUP_OBJ:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) case ACL_MASK:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) case ACL_OTHER:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) e += sizeof(ext2_acl_entry_short);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) goto fail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) return (char *)ext_acl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) fail:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) kfree(ext_acl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) return ERR_PTR(-EINVAL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) * inode->i_mutex: don't care
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) struct posix_acl *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) ext2_get_acl(struct inode *inode, int type)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) int name_index;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) char *value = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) struct posix_acl *acl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) int retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) switch (type) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) case ACL_TYPE_ACCESS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) name_index = EXT2_XATTR_INDEX_POSIX_ACL_ACCESS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) case ACL_TYPE_DEFAULT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) name_index = EXT2_XATTR_INDEX_POSIX_ACL_DEFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) BUG();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) retval = ext2_xattr_get(inode, name_index, "", NULL, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) if (retval > 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) value = kmalloc(retval, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) if (!value)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) return ERR_PTR(-ENOMEM);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) retval = ext2_xattr_get(inode, name_index, "", value, retval);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) if (retval > 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) acl = ext2_acl_from_disk(value, retval);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) else if (retval == -ENODATA || retval == -ENOSYS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) acl = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) acl = ERR_PTR(retval);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) kfree(value);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) return acl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) __ext2_set_acl(struct inode *inode, struct posix_acl *acl, int type)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) int name_index;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) void *value = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) size_t size = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) switch(type) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) case ACL_TYPE_ACCESS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) name_index = EXT2_XATTR_INDEX_POSIX_ACL_ACCESS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) case ACL_TYPE_DEFAULT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) name_index = EXT2_XATTR_INDEX_POSIX_ACL_DEFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) if (!S_ISDIR(inode->i_mode))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) return acl ? -EACCES : 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) if (acl) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) value = ext2_acl_to_disk(acl, &size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) if (IS_ERR(value))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) return (int)PTR_ERR(value);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) error = ext2_xattr_set(inode, name_index, "", value, size, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) kfree(value);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) if (!error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) set_cached_acl(inode, type, acl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) }
^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) * inode->i_mutex: down
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) ext2_set_acl(struct inode *inode, struct posix_acl *acl, int type)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) int update_mode = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) umode_t mode = inode->i_mode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) if (type == ACL_TYPE_ACCESS && acl) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) error = posix_acl_update_mode(inode, &mode, &acl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) update_mode = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) error = __ext2_set_acl(inode, acl, type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) if (!error && update_mode) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) inode->i_mode = mode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) inode->i_ctime = current_time(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) mark_inode_dirty(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) * Initialize the ACLs of a new inode. Called from ext2_new_inode.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) * dir->i_mutex: down
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) * inode->i_mutex: up (access to inode is still exclusive)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) ext2_init_acl(struct inode *inode, struct inode *dir)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) struct posix_acl *default_acl, *acl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) error = posix_acl_create(dir, &inode->i_mode, &default_acl, &acl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) if (default_acl) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) error = __ext2_set_acl(inode, default_acl, ACL_TYPE_DEFAULT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) posix_acl_release(default_acl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) inode->i_default_acl = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) if (acl) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) if (!error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) error = __ext2_set_acl(inode, acl, ACL_TYPE_ACCESS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) posix_acl_release(acl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) inode->i_acl = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) }
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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