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/* SPDX-License-Identifier: ISC */
#include "init.h"
static int send_retry(int fd, const void *dst, size_t addrlen,
const void *buffer, size_t size)
{
ssize_t ret;
retry:
ret = sendto(fd, buffer, size, MSG_NOSIGNAL, dst, addrlen);
if (ret < 0 && errno == EINTR)
goto retry;
if (ret < 0 || (size_t)ret < size)
return -1;
return 0;
}
static int send_string(int fd, const void *dst, size_t addrlen,
const char *str)
{
size_t len = strlen(str);
uint16_t raw;
if (len > 0xFFFF)
return -1;
raw = htobe16(len);
if (send_retry(fd, dst, addrlen, &raw, 2))
return -1;
return len > 0 ? send_retry(fd, dst, addrlen, str, len) : 0;
}
int init_socket_create(void)
{
struct sockaddr_un un;
int fd;
fd = socket(AF_UNIX, SOCK_DGRAM | SOCK_CLOEXEC, 0);
if (fd < 0) {
perror("socket");
return -1;
}
memset(&un, 0, sizeof(un));
un.sun_family = AF_UNIX;
strcpy(un.sun_path, INIT_SOCK_PATH);
unlink(INIT_SOCK_PATH);
if (bind(fd, (struct sockaddr *)&un, sizeof(un))) {
perror("bind: " INIT_SOCK_PATH);
close(fd);
unlink(INIT_SOCK_PATH);
return -1;
}
return fd;
}
int init_socket_send_status(int fd, const void *dest_addr, size_t addrlen,
E_SERVICE_STATE state, service_t *svc)
{
init_response_status_t info;
memset(&info, 0, sizeof(info));
if (svc == NULL || state == ESS_NONE) {
info.state = ESS_NONE;
info.id = -1;
} else {
info.state = state;
info.exit_status = svc->status & 0xFF;
info.id = htobe32(svc->id);
}
if (send_retry(fd, dest_addr, addrlen, &info, sizeof(info)))
return -1;
if (svc != NULL && state != ESS_NONE) {
if (send_string(fd, dest_addr, addrlen, svc->fname))
return -1;
if (send_string(fd, dest_addr, addrlen, svc->name))
return -1;
}
return 0;
}
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