1 /* 2 * Copyright (C) 2012-2014 Cyril Hrubis chrubis (at) suse.cz 3 * 4 * This program is free software; you can redistribute it and/or modify it 5 * under the terms of version 2 of the GNU General Public License as 6 * published by the Free Software Foundation. 7 * 8 * This program is distributed in the hope that it would be useful, but 9 * WITHOUT ANY WARRANTY; without even the implied warranty of 10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 11 * 12 * Further, this software is distributed without any warranty that it is 13 * free of the rightful claim of any third person regarding infringement 14 * or the like. Any license provided herein, whether implied or 15 * otherwise, applies only to this software file. Patent licenses, if 16 * any, provided herein do not apply to combinations of this program with 17 * other software, or any other product whatsoever. 18 * 19 * You should have received a copy of the GNU General Public License along 20 * with this program; if not, write the Free Software Foundation, Inc., 21 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. 22 */ 23 24 #include <stdio.h> 25 #include <string.h> 26 #include <errno.h> 27 28 #include "test.h" 29 #include "tst_process_state.h" 30 31 void tst_process_state_wait(const char *file, const int lineno, 32 void (*cleanup_fn)(void), 33 pid_t pid, const char state) 34 { 35 char proc_path[128], cur_state; 36 37 snprintf(proc_path, sizeof(proc_path), "/proc/%i/stat", pid); 38 39 for (;;) { 40 safe_file_scanf(file, lineno, cleanup_fn, proc_path, 41 "%*i %*s %c", &cur_state); 42 43 if (state == cur_state) 44 return; 45 46 usleep(10000); 47 } 48 } 49 50 int tst_process_state_wait2(pid_t pid, const char state) 51 { 52 char proc_path[128], cur_state; 53 54 snprintf(proc_path, sizeof(proc_path), "/proc/%i/stat", pid); 55 56 for (;;) { 57 FILE *f = fopen(proc_path, "r"); 58 if (!f) { 59 fprintf(stderr, "Failed to open '%s': %s\n", 60 proc_path, strerror(errno)); 61 return 1; 62 } 63 64 if (fscanf(f, "%*i %*s %c", &cur_state) != 1) { 65 fclose(f); 66 fprintf(stderr, "Failed to read '%s': %s\n", 67 proc_path, strerror(errno)); 68 return 1; 69 } 70 fclose(f); 71 72 if (state == cur_state) 73 return 0; 74 75 usleep(10000); 76 } 77 } 78
