11a1589223
Files which are installed as-is (any .service and other unit files, .conf files, .policy files, etc), are left as is. My assumption is that SPDX identifiers are not yet that well known, so it's better to retain the extended header to avoid any doubt. I also kept any copyright lines. We can probably remove them, but it'd nice to obtain explicit acks from all involved authors before doing that.
110 lines
3.2 KiB
C
110 lines
3.2 KiB
C
/* SPDX-License-Identifier: LGPL-2.1+ */
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/***
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This file is part of systemd.
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Copyright 2013 Tom Gundersen <teg@jklm.no>
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***/
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#include "condition.h"
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#include "conf-parser.h"
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#include "networkd-util.h"
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#include "parse-util.h"
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#include "string-table.h"
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#include "string-util.h"
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#include "util.h"
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const char *address_family_boolean_to_string(AddressFamilyBoolean b) {
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if (IN_SET(b, ADDRESS_FAMILY_YES, ADDRESS_FAMILY_NO))
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return yes_no(b == ADDRESS_FAMILY_YES);
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if (b == ADDRESS_FAMILY_IPV4)
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return "ipv4";
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if (b == ADDRESS_FAMILY_IPV6)
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return "ipv6";
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return NULL;
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}
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AddressFamilyBoolean address_family_boolean_from_string(const char *s) {
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int r;
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/* Make this a true superset of a boolean */
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r = parse_boolean(s);
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if (r > 0)
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return ADDRESS_FAMILY_YES;
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if (r == 0)
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return ADDRESS_FAMILY_NO;
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if (streq(s, "ipv4"))
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return ADDRESS_FAMILY_IPV4;
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if (streq(s, "ipv6"))
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return ADDRESS_FAMILY_IPV6;
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return _ADDRESS_FAMILY_BOOLEAN_INVALID;
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}
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DEFINE_CONFIG_PARSE_ENUM(config_parse_address_family_boolean, address_family_boolean, AddressFamilyBoolean, "Failed to parse option");
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int config_parse_address_family_boolean_with_kernel(
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const char* unit,
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const char *filename,
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unsigned line,
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const char *section,
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unsigned section_line,
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const char *lvalue,
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int ltype,
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const char *rvalue,
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void *data,
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void *userdata) {
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AddressFamilyBoolean *fwd = data, s;
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assert(filename);
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assert(lvalue);
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assert(rvalue);
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assert(data);
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/* This function is mostly obsolete now. It simply redirects
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* "kernel" to "no". In older networkd versions we used to
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* distuingish IPForward=off from IPForward=kernel, where the
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* former would explicitly turn off forwarding while the
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* latter would simply not touch the setting. But that logic
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* is gone, hence silently accept the old setting, but turn it
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* to "no". */
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s = address_family_boolean_from_string(rvalue);
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if (s < 0) {
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if (streq(rvalue, "kernel"))
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s = ADDRESS_FAMILY_NO;
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else {
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log_syntax(unit, LOG_ERR, filename, line, 0, "Failed to parse IPForward= option, ignoring: %s", rvalue);
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return 0;
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}
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}
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*fwd = s;
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return 0;
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}
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/* Router lifetime can be set with netlink interface since kernel >= 4.5
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* so for the supported kernel we dont need to expire routes in userspace */
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int kernel_route_expiration_supported(void) {
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static int cached = -1;
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int r;
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if (cached < 0) {
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Condition c = {
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.type = CONDITION_KERNEL_VERSION,
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.parameter = (char *) ">= 4.5"
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};
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r = condition_test(&c);
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if (r < 0)
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return r;
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cached = r;
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}
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return cached;
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}
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