BSD 4 release

[unix-history] / usr / src / cmd / chown.c

static char *sccsid = "@(#)chown.c      4.1 (Berkeley) 10/1/80";
/*
* chown uid file ...
*/

#include <stdio.h>
#include <ctype.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <pwd.h>

struct  passwd  *pwd,*getpwnam();
struct  stat    stbuf;
int     uid;
int     status;

main(argc, argv)
char *argv[];
{
       register c;

       if(argc < 3) {
               printf("usage: chown uid file ...\n");
               exit(4);
       }
       if(isnumber(argv[1])) {
               uid = atoi(argv[1]);
               goto cho;
       }
       if((pwd=getpwnam(argv[1])) == NULL) {
               printf("unknown user id: %s\n",argv[1]);
               exit(4);
       }
       uid = pwd->pw_uid;

cho:
       for(c=2; c<argc; c++) {
               stat(argv[c], &stbuf);
               if(chown(argv[c], uid, stbuf.st_gid) < 0) {
                       perror(argv[c]);
                       status = 1;
               }
       }
       exit(status);
}

isnumber(s)
char *s;
{
       register c;

       while(c = *s++)
               if(!isdigit(c))
                       return(0);
       return(1);
}