/* 23.4.7 */
int
acl_create_entry(acl_t *acl_p, acl_entry_t *entry_p)
{
acl_obj *acl_obj_p;
acl_entry_obj *entry_obj_p;
if (!acl_p || !entry_p) {
if (entry_p)
*entry_p = NULL;
errno = EINVAL;
return -1;
}
acl_obj_p = ext2int(acl, *acl_p);
if (!acl_obj_p)
return -1;
entry_obj_p = __acl_create_entry_obj(acl_obj_p);
if (entry_obj_p == NULL)
return -1;
*entry_p = int2ext(entry_obj_p);
return 0;
}
/* 23.4.6 */
acl_t
acl_copy_int(const void *buf_p)
{
const struct __acl *ext_acl = (struct __acl *)buf_p;
const struct __acl_entry *ent_p = ext_acl->x_entries, *end_p;
size_t size = ext_acl ? ext_acl->x_size : 0;
int entries;
acl_obj *acl_obj_p;
acl_entry_obj *entry_obj_p;
if (!ext_acl || size < sizeof(struct __acl)) {
errno = EINVAL;
return NULL;
}
size -= sizeof(struct __acl);
if (size % sizeof(struct __acl_entry)) {
errno = EINVAL;
return NULL;
}
entries = size / sizeof(struct __acl_entry);
acl_obj_p = __acl_init_obj(entries);
if (acl_obj_p == NULL)
goto fail;
end_p = ext_acl->x_entries + entries;
for(; ent_p != end_p; ent_p++) {
entry_obj_p = __acl_create_entry_obj(acl_obj_p);
if (!entry_obj_p)
goto fail;
/* XXX Convert to machine endianness */
entry_obj_p->eentry = *ent_p;
}
if (__acl_reorder_obj_p(acl_obj_p))
goto fail;
return int2ext(acl_obj_p);
fail:
__acl_free_acl_obj(acl_obj_p);
return NULL;
}
static int
parse_acl_entry(const char **text_p, acl_t *acl_p)
{
acl_entry_obj entry_obj;
acl_entry_t entry_d;
char *str;
const char *backup;
int error, perm_chars;
new_obj_p_here(acl_entry, &entry_obj);
init_acl_entry_obj(entry_obj);
/* parse acl entry type */
SKIP_WS(*text_p);
switch (**text_p) {
case 'u': /* user */
if (!skip_tag_name(text_p, "user"))
goto fail;
backup = *text_p;
str = get_token(text_p);
if (str) {
entry_obj.etag = ACL_USER;
error = get_uid(unquote(str),
&entry_obj.eid.qid);
free(str);
if (error) {
*text_p = backup;
return -1;
}
} else {
entry_obj.etag = ACL_USER_OBJ;
}
break;
case 'g': /* group */
if (!skip_tag_name(text_p, "group"))
goto fail;
backup = *text_p;
str = get_token(text_p);
if (str) {
entry_obj.etag = ACL_GROUP;
error = get_gid(unquote(str),
&entry_obj.eid.qid);
free(str);
if (error) {
*text_p = backup;
return -1;
}
} else {
entry_obj.etag = ACL_GROUP_OBJ;
}
break;
case 'm': /* mask */
if (!skip_tag_name(text_p, "mask"))
goto fail;
/* skip empty entry qualifier field (this field may
be missing for compatibility with Solaris.) */
SKIP_WS(*text_p);
if (**text_p == ':')
(*text_p)++;
entry_obj.etag = ACL_MASK;
break;
case 'o': /* other */
if (!skip_tag_name(text_p, "other"))
goto fail;
/* skip empty entry qualifier field (this field may
be missing for compatibility with Solaris.) */
SKIP_WS(*text_p);
if (**text_p == ':')
(*text_p)++;
entry_obj.etag = ACL_OTHER;
break;
default:
goto fail;
}
for (perm_chars=0; perm_chars<3; perm_chars++, (*text_p)++) {
switch(**text_p) {
case 'r':
if (entry_obj.eperm.sperm & ACL_READ)
goto fail;
entry_obj.eperm.sperm |= ACL_READ;
break;
case 'w':
if (entry_obj.eperm.sperm & ACL_WRITE)
goto fail;
entry_obj.eperm.sperm |= ACL_WRITE;
break;
case 'x':
if (entry_obj.eperm.sperm & ACL_EXECUTE)
goto fail;
entry_obj.eperm.sperm |= ACL_EXECUTE;
break;
case '-':
/* ignore */
break;
default:
if (perm_chars == 0)
goto fail;
goto create_entry;
}
}
create_entry:
if (acl_create_entry(acl_p, &entry_d) != 0)
return -1;
if (acl_copy_entry(entry_d, int2ext(&entry_obj)) != 0)
return -1;
return 0;
fail:
errno = EINVAL;
return -1;
}