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| author | Yu Watanabe <watanabe.yu+github@gmail.com> | 2022-01-31 19:26:51 +0900 |
|---|---|---|
| committer | Yu Watanabe <watanabe.yu+github@gmail.com> | 2022-02-01 11:30:37 +0900 |
| commit | b69bfa43052586cd6894c32d7d3d447195539ec5 (patch) | |
| tree | ddee51c4d9b080e766237c999373072a3d429a7c /src/basic/in-addr-util.c | |
| parent | 259c65f36c02a740ba2fa2791c421dada4db441c (diff) | |
| download | systemd-b69bfa43052586cd6894c32d7d3d447195539ec5.tar.gz | |
network: do not remove localhost address
Managing loopback interfaces by networkd is not recommended, but supporeted.
Even such spurious situation, do not drop the localhost addresses.
Diffstat (limited to 'src/basic/in-addr-util.c')
| -rw-r--r-- | src/basic/in-addr-util.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/src/basic/in-addr-util.c b/src/basic/in-addr-util.c index a43a831991..660c1f1824 100644 --- a/src/basic/in-addr-util.c +++ b/src/basic/in-addr-util.c @@ -121,6 +121,19 @@ int in_addr_is_localhost(int family, const union in_addr_union *u) { return -EAFNOSUPPORT; } +int in_addr_is_localhost_one(int family, const union in_addr_union *u) { + assert(u); + + if (family == AF_INET) + /* 127.0.0.1 */ + return be32toh(u->in.s_addr) == UINT32_C(0x7F000001); + + if (family == AF_INET6) + return IN6_IS_ADDR_LOOPBACK(&u->in6); /* lgtm [cpp/potentially-dangerous-function] */ + + return -EAFNOSUPPORT; +} + bool in6_addr_is_ipv4_mapped_address(const struct in6_addr *a) { return a->s6_addr32[0] == 0 && a->s6_addr32[1] == 0 && |