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https://github.com/qemu/qemu.git
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eb3fb50838
Add check for queues parameter to be non-zero, and for fd/fds parameters to be non-empty. Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@yandex-team.ru> Signed-off-by: Jason Wang <jasowang@redhat.com>
115 lines
3.0 KiB
C
115 lines
3.0 KiB
C
/*
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* QEMU System Emulator
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*
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* Copyright (c) 2003-2008 Fabrice Bellard
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "qemu/osdep.h"
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#include "monitor/monitor.h"
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#include "qapi/error.h"
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#include "util.h"
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int net_parse_macaddr(uint8_t *macaddr, const char *p)
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{
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int i;
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char *last_char;
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long int offset;
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errno = 0;
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offset = strtol(p, &last_char, 0);
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if (errno == 0 && *last_char == '\0' &&
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offset >= 0 && offset <= 0xFFFFFF) {
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macaddr[3] = (offset & 0xFF0000) >> 16;
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macaddr[4] = (offset & 0xFF00) >> 8;
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macaddr[5] = offset & 0xFF;
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return 0;
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}
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for (i = 0; i < 6; i++) {
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macaddr[i] = strtol(p, (char **)&p, 16);
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if (i == 5) {
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if (*p != '\0') {
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return -1;
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}
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} else {
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if (*p != ':' && *p != '-') {
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return -1;
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}
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p++;
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}
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}
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return 0;
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}
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void net_free_fds(int *fds, int nfds)
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{
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int i;
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if (!fds || nfds <= 0) {
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return;
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}
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for (i = 0; i < nfds; i++) {
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if (fds[i] != -1) {
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close(fds[i]);
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}
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}
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g_free(fds);
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}
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int net_parse_fds(const char *fds_param, int **fds, int expected_nfds,
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Error **errp)
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{
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g_auto(GStrv) fdnames = g_strsplit(fds_param, ":", -1);
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unsigned nfds = g_strv_length(fdnames);
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int i;
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if (nfds > INT_MAX) {
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error_setg(errp, "fds parameter exceeds maximum of %d", INT_MAX);
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return -1;
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}
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if (expected_nfds && nfds != expected_nfds) {
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error_setg(errp, "expected %u socket fds, got %u", expected_nfds, nfds);
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return -1;
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}
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if (nfds == 0) {
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error_setg(errp, "no fds passed");
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return -1;
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}
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*fds = g_new(int, nfds);
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for (i = 0; i < nfds; i++) {
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(*fds)[i] = monitor_fd_param(monitor_cur(), fdnames[i], errp);
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if ((*fds)[i] == -1) {
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net_free_fds(*fds, i);
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*fds = NULL;
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return -1;
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}
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}
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return nfds;
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}
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