1 /******************************************************************************/ 2 /* */ 3 /* Copyright (c) 2009 FUJITSU LIMITED */ 4 /* */ 5 /* This program is free software; you can redistribute it and/or modify */ 6 /* it under the terms of the GNU General Public License as published by */ 7 /* the Free Software Foundation; either version 2 of the License, or */ 8 /* (at your option) any later version. */ 9 /* */ 10 /* This program is distributed in the hope that it will be useful, */ 11 /* but WITHOUT ANY WARRANTY; without even the implied warranty of */ 12 /* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See */ 13 /* the GNU General Public License for more details. */ 14 /* */ 15 /* You should have received a copy of the GNU General Public License */ 16 /* along with this program; if not, write to the Free Software */ 17 /* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ 18 /* */ 19 /* Author: Li Zefan <lizf (at) cn.fujitsu.com> */ 20 /* */ 21 /******************************************************************************/ 22 23 #include <sys/types.h> 24 #include <sys/stat.h> 25 #include <unistd.h> 26 #include <stdio.h> 27 #include <string.h> 28 29 /* 30 * Usage: file_time <filename> <atime|mtime|ctime> <sec|nsec> 31 */ 32 int main(int argc, char *argv[]) 33 { 34 time_t t; 35 struct stat st; 36 37 if (argc != 4) { 38 fprintf(stderr, "Wrong argument num!\n"); 39 return 1; 40 } 41 42 if (stat(argv[1], &st) != 0) { 43 perror("stat failed"); 44 return 1; 45 } 46 47 if (strcmp(argv[3], "sec") == 0) { 48 if (strcmp(argv[2], "atime") == 0) 49 t = st.st_atime; 50 else if (strcmp(argv[2], "mtime") == 0) 51 t = st.st_mtime; 52 else 53 t = st.st_ctime; 54 } else if (strcmp(argv[3], "nsec") == 0) { 55 if (strcmp(argv[2], "atime") == 0) 56 t = st.st_atim.tv_nsec; 57 else if (strcmp(argv[2], "mtime") == 0) 58 t = st.st_mtim.tv_nsec; 59 else 60 t = st.st_ctim.tv_nsec; 61 } else { 62 fprintf(stderr, "Wrong argument: %s\n", argv[3]); 63 return 1; 64 } 65 66 printf("%lu\n", t); 67 68 return 0; 69 } 70
