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network/address: ignore address settings with unsupported flags

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This commit is contained in:
Yu Watanabe 2023-07-11 11:07:21 +09:00
parent d9e2afc033
commit b1179a5d0b
1 changed files with 46 additions and 0 deletions
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46
src/network/networkd-address.c
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@ -26,6 +26,39 @@
#define ADDRESSES_PER_LINK_MAX 2048U
#define STATIC_ADDRESSES_PER_NETWORK_MAX 1024U
#define KNOWN_FLAGS \
(IFA_F_SECONDARY | \
IFA_F_NODAD | \
IFA_F_OPTIMISTIC | \
IFA_F_DADFAILED | \
IFA_F_HOMEADDRESS | \
IFA_F_DEPRECATED | \
IFA_F_TENTATIVE | \
IFA_F_PERMANENT | \
IFA_F_MANAGETEMPADDR | \
IFA_F_NOPREFIXROUTE | \
IFA_F_MCAUTOJOIN | \
IFA_F_STABLE_PRIVACY)
/* From net/ipv4/devinet.c */
#define IPV6ONLY_FLAGS \
(IFA_F_NODAD | \
IFA_F_OPTIMISTIC | \
IFA_F_DADFAILED | \
IFA_F_HOMEADDRESS | \
IFA_F_TENTATIVE | \
IFA_F_MANAGETEMPADDR | \
IFA_F_STABLE_PRIVACY)
/* We do not control the following flags. */
#define UNMANAGED_FLAGS \
(IFA_F_SECONDARY | \
IFA_F_DADFAILED | \
IFA_F_DEPRECATED | \
IFA_F_TENTATIVE | \
IFA_F_PERMANENT | \
IFA_F_STABLE_PRIVACY)
int address_flags_to_string_alloc(uint32_t flags, int family, char **ret) {
_cleanup_free_ char *str = NULL;
static const char* map[] = {
@ -2179,6 +2212,19 @@ static int address_section_verify(Address *address) {
!FLAGS_SET(address->duplicate_address_detection, ADDRESS_FAMILY_IPV6))
address->flags |= IFA_F_NODAD;
uint32_t filtered_flags = address->family == AF_INET ?
address->flags & KNOWN_FLAGS & ~UNMANAGED_FLAGS & ~IPV6ONLY_FLAGS :
address->flags & KNOWN_FLAGS & ~UNMANAGED_FLAGS;
if (address->flags != filtered_flags) {
_cleanup_free_ char *str = NULL;
(void) address_flags_to_string_alloc(filtered_flags, address->family, &str);
return log_warning_errno(SYNTHETIC_ERRNO(EINVAL),
"%s: unexpected address flags \"%s\" were configured. "
"Ignoring [Address] section from line %u.",
address->section->filename, strna(str), address->section->line);
}
return 0;
}