1 /* 2 * Copyright (c) 2016 Xiao Yang <yangx.jy (at) cn.fujitsu.com> 3 * 4 * This program is free software; you can redistribute it and/or modify 5 * it under the terms of the GNU General Public License as published by 6 * the Free Software Foundation; either version 2 of the License, or 7 * (at your option) any later version. 8 * 9 * This program is distributed in the hope that it will be useful, 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See 12 * the GNU General Public License for more details. 13 * 14 * You should have received a copy of the GNU General Public License 15 * along with this program. 16 */ 17 18 /* 19 * DESCRIPTION 20 * common routines for the IPC system call tests. 21 */ 22 23 #include <errno.h> 24 #include <unistd.h> 25 #include <stdio.h> 26 #include <stdlib.h> 27 #include <sys/types.h> 28 #include <sys/ipc.h> 29 30 #define TST_NO_DEFAULT_MAIN 31 32 #include "tst_test.h" 33 #include "libnewipc.h" 34 35 #define BUFSIZE 1024 36 37 key_t getipckey(const char *file, const int lineno) 38 { 39 char buf[BUFSIZE]; 40 key_t key; 41 int id; 42 static int count; 43 44 SAFE_GETCWD(buf, BUFSIZE); 45 46 id = count % 26 + (int) 'a'; 47 count++; 48 49 key = ftok(buf, id); 50 if (key == -1) { 51 tst_brk(TBROK | TERRNO, 52 "ftok() failed at %s:%d", file, lineno); 53 } 54 55 return key; 56 } 57 58 int get_used_queues(const char *file, const int lineno) 59 { 60 FILE *fp; 61 int used_queues = -1; 62 char buf[BUFSIZE]; 63 64 fp = fopen("/proc/sysvipc/msg", "r"); 65 if (fp == NULL) { 66 tst_brk(TBROK | TERRNO, 67 "fopen() failed at %s:%d", file, lineno); 68 } 69 70 while (fgets(buf, BUFSIZE, fp) != NULL) 71 used_queues++; 72 73 fclose(fp); 74 75 if (used_queues < 0) { 76 tst_brk(TBROK, "can't read /proc/sysvipc/msg to get " 77 "used message queues at %s:%d", file, lineno); 78 } 79 80 return used_queues; 81 } 82
