53e1b68390
This follows what the kernel is doing, c.f. https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=5fd54ace4721fc5ce2bb5aef6318fcf17f421460.
98 lines
2.7 KiB
C
98 lines
2.7 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 2016 Lennart Poettering
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systemd is free software; you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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systemd is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with systemd; If not, see <http://www.gnu.org/licenses/>.
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***/
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#include "conf-parser.h"
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#include "parse-util.h"
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#include "string-util.h"
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#include "vlan-util.h"
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int parse_vlanid(const char *p, uint16_t *ret) {
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uint16_t id;
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int r;
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r = safe_atou16(p, &id);
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if (r < 0)
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return r;
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if (!vlanid_is_valid(id))
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return -ERANGE;
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*ret = id;
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return 0;
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}
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int config_parse_default_port_vlanid(
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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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uint16_t *id = data;
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assert(lvalue);
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assert(rvalue);
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assert(data);
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if (streq(rvalue, "none")) {
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*id = 0;
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return 0;
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}
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return config_parse_vlanid(unit, filename, line, section, section_line,
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lvalue, ltype, rvalue, data, userdata);
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}
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int config_parse_vlanid(
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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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uint16_t *id = data;
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int r;
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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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r = parse_vlanid(rvalue, id);
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if (r == -ERANGE) {
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log_syntax(unit, LOG_ERR, filename, line, r, "VLAN identifier outside of valid range 0…4094, ignoring: %s", rvalue);
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return 0;
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}
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if (r < 0) {
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log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse VLAN identifier value, ignoring: %s", rvalue);
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return 0;
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}
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return 0;
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}
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