utime修改文件时间

#include <stdio.h>#include <stdlib.h>#include <time.h>#include <string.h>#include <sys/types.h>#include <utime.h>#include <errno.h>void check_time_format(int year,int month,int day,int hour,int minute,int second) {int valid_day=0;if(year<1970 || year>2034) {printf("year input error, range: 1970-2034./n");exit(-1);}if(month<1 || month >12) {printf("month input error, rang: 1-12./n");exit(-1);}else {if(month==1 || month==3 || month==5 || month==7 || month==8 || month==10 || month==12) {valid_day=31;}else if(month==4 || month==6 || month==9 || month==11) {valid_day=30;}else {if(year%400==0 || year%4==0 && year%100!=0) {valid_day=29;}else {valid_day=28;}}}if(day<1 || day>valid_day) {printf("day input error, range: 1-%d./n",valid_day);exit(-1);}if(hour<0 || hour>23) {printf("hour input error, range: 0-23./n");exit(-1);}if(minute<0 || minute>59) {printf("minute input error, range: 0-59./n");exit(-1);}if(second<0 || second>59) {printf("second input error, range: 0-59./n");exit(-1);}}void change_time(char *filename,struct tm *tt) {int i,ret;unsigned long time;struct utimbuf buf;time=mktime(tt);printf("%u/n",time);buf.actime=time;buf.modtime=time;ret=utime(filename,&buf);if(ret==-1) {if(errno==ENOENT) {fprintf(stderr,"%s does not exist./n",filename);exit(-1);}else {fprintf(stderr,"utime error./n");exit(-1);}}}int main(int argc,char *argv[]) {int i;struct tm t;if(argc==1) {fprintf(stderr,"%s filename.../n",argv[0]);exit(-1);}printf("Input date: ");scanf("%d-%d-%d-%d-%d-%d",&t.tm_year,&t.tm_mon,&t.tm_mday,&t.tm_hour,&t.tm_min,&t.tm_sec);check_time_format(t.tm_year,t.tm_mon,t.tm_mday,t.tm_hour,t.tm_min,t.tm_sec);printf("%d,%d,%d,%d,%d,%d/n",t.tm_year-=1900,t.tm_mon-=1,t.tm_mday,t.tm_hour,t.tm_min,t.tm_sec);for(i=1;i<argc;i++)change_time(argv[i],&t);exit(0);}