mirror of
https://github.com/clearlinux/clr-debug-info.git
synced 2026-09-03 12:21:49 +00:00
123 lines
3.3 KiB
C
123 lines
3.3 KiB
C
/*
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* Clear Linux -- automatic debug information installation
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*
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* Copyright (C) 2013 Arjan van de Ven
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* Copyright (C) 2014 Intel Corporation
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, version 2 or later of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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* Authors:
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* Arjan van de Ven <arjanvandeven@gmail.com>
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* Ikey Doherty <michael.i.doherty@intel.com>
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*
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*/
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#define _GNU_SOURCE
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#include "nica/util.h"
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#include <errno.h>
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#include <stddef.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/socket.h>
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#include <sys/types.h>
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#include <sys/un.h>
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#include <time.h>
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#include <unistd.h>
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/* 0.75 seconds timeout */
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#define TIMEOUT 750000
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#define TIMEOUT2 15000
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#define TIMEOUT3 500
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char *prefix = "src";
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time_t deadtime;
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void try_to_get(const char *path, int pid, time_t timestamp)
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{
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int sockfd;
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struct sockaddr_un sun;
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int ret;
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socklen_t len;
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char *command;
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fd_set rfds;
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struct timeval tv;
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struct ucred cred;
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int shorttime = 0;
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__nc_unused__ size_t wr = -1;
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// printf("Trying to aquire %s\n", path);
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sockfd = socket(AF_UNIX, SOCK_STREAM, 0);
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if (sockfd < 0) {
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return;
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}
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sun.sun_family = AF_UNIX;
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strcpy(sun.sun_path, ":clr-debug-info");
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sun.sun_path[0] = 0; /* anonymous unix socket */
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ret = connect(sockfd,
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(struct sockaddr *)&sun,
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offsetof(struct sockaddr_un, sun_path) + strlen(":clr-debug-info") + 1);
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if (ret < 0) {
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printf("Cannot connect %s\n", strerror(errno));
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close(sockfd);
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return;
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}
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len = sizeof(cred);
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memset(&cred, 0, sizeof(cred));
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ret = getsockopt(sockfd, SOL_SOCKET, SO_PEERCRED, &cred, &len);
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if (ret == 0 && cred.pid == pid) {
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printf("Recursion\n");
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close(sockfd);
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return;
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}
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command = NULL;
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if (asprintf(&command, "%llu:%s:%s", (unsigned long long)timestamp, prefix, path) < 0) {
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close(sockfd);
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return;
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}
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wr = write(sockfd, command, strlen(command) + 1);
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FD_ZERO(&rfds);
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FD_SET(sockfd, &rfds);
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/* Wait up to 0.5 seconds. */
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tv.tv_sec = 0;
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tv.tv_usec = TIMEOUT;
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/* if we had a timeout recently, must go quicker to avoid sequential delays */
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if (deadtime > time(NULL)) {
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tv.tv_usec = TIMEOUT2;
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shorttime = 1;
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}
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ret = 1;
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if (!timestamp) {
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ret = select(sockfd + 1, &rfds, NULL, &rfds, &tv);
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}
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if (ret == 0 && !shorttime) {
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printf("timeout for %s\n", path);
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deadtime = time(NULL) + 4;
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}
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close(sockfd);
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}
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