1 /* 2 * Copyright (c) 2017 Cyril Hrubis <chrubis (at) suse.cz> 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 the 12 * 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. If not, see <http://www.gnu.org/licenses/>. 16 */ 17 18 #include <errno.h> 19 #include <stdio.h> 20 #include <stdlib.h> 21 22 #define TST_NO_DEFAULT_MAIN 23 #include "tst_test.h" 24 #include "tst_fs.h" 25 26 void tst_fill_fs(const char *path, int verbose) 27 { 28 int i = 0; 29 char file[PATH_MAX]; 30 char buf[4096]; 31 size_t len; 32 ssize_t ret; 33 int fd; 34 35 for (;;) { 36 len = random() % (1024 * 102400); 37 38 snprintf(file, sizeof(file), "%s/file%i", path, i++); 39 40 if (verbose) 41 tst_res(TINFO, "Creating file %s size %zu", file, len); 42 43 fd = open(file, O_WRONLY | O_CREAT, 0700); 44 if (fd == -1) { 45 if (errno != ENOSPC) 46 tst_brk(TBROK | TERRNO, "open()"); 47 48 tst_res(TINFO | TERRNO, "open()"); 49 return; 50 } 51 52 while (len) { 53 ret = write(fd, buf, MIN(len, sizeof(buf))); 54 55 if (ret < 0) { 56 SAFE_CLOSE(fd); 57 58 if (errno != ENOSPC) 59 tst_brk(TBROK | TERRNO, "write()"); 60 61 tst_res(TINFO | TERRNO, "write()"); 62 return; 63 } 64 65 len -= ret; 66 } 67 68 SAFE_CLOSE(fd); 69 } 70 } 71
