mirror of
https://github.com/pygos/init.git
synced 2024-11-05 20:27:09 +01:00
91 lines
1.9 KiB
C
91 lines
1.9 KiB
C
/* SPDX-License-Identifier: ISC */
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#include "init.h"
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static int send_retry(int fd, const void *dst, size_t addrlen,
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const void *buffer, size_t size)
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{
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ssize_t ret;
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retry:
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ret = sendto(fd, buffer, size, MSG_NOSIGNAL, dst, addrlen);
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if (ret < 0 && errno == EINTR)
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goto retry;
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if (ret < 0 || (size_t)ret < size)
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return -1;
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return 0;
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}
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static int send_string(int fd, const void *dst, size_t addrlen,
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const char *str)
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{
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size_t len = strlen(str);
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uint8_t raw_len[2];
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raw_len[0] = (len >> 8) & 0xFF;
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raw_len[1] = len & 0xFF;
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if (send_retry(fd, dst, addrlen, raw_len, 2))
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return -1;
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return len > 0 ? send_retry(fd, dst, addrlen, str, len) : 0;
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}
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int init_socket_create(void)
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{
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struct sockaddr_un un;
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int fd;
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fd = socket(AF_UNIX, SOCK_DGRAM | SOCK_CLOEXEC, 0);
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if (fd < 0) {
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perror("socket");
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return -1;
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}
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memset(&un, 0, sizeof(un));
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un.sun_family = AF_UNIX;
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strcpy(un.sun_path, INIT_SOCK_PATH);
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unlink(INIT_SOCK_PATH);
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if (bind(fd, (struct sockaddr *)&un, sizeof(un))) {
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perror("bind: " INIT_SOCK_PATH);
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close(fd);
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unlink(INIT_SOCK_PATH);
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return -1;
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}
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return fd;
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}
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int init_socket_send_status(int fd, const void *dest_addr, size_t addrlen,
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E_SERVICE_STATE state, service_t *svc)
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{
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uint8_t info[8];
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if (svc == NULL || state == ESS_NONE) {
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info[0] = ESS_NONE;
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info[1] = 0;
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info[2] = info[3] = 0;
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info[4] = info[5] = info[6] = info[7] = 0xFF;
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} else {
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info[0] = state;
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info[1] = svc->status & 0xFF;
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info[2] = info[3] = 0;
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info[4] = (svc->id >> 24) & 0xFF;
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info[5] = (svc->id >> 16) & 0xFF;
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info[6] = (svc->id >> 8) & 0xFF;
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info[7] = svc->id & 0xFF;
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}
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if (send_retry(fd, dest_addr, addrlen, info, sizeof(info)))
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return -1;
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if (svc != NULL && state != ESS_NONE) {
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if (send_string(fd, dest_addr, addrlen, svc->fname))
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return -1;
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if (send_string(fd, dest_addr, addrlen, svc->name))
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return -1;
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}
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return 0;
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}
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