BSD 4_1c_2 release

[unix-history] / usr / src / usr.bin / uucp / shio.c

static char sccsid[] = "@(#)shio.c      4.1     (Berkeley)      9/11/82";

#include "uucp.h"


/*******
*      shio(cmd, fi, fo, user) execute shell of command with
*      char *cmd, *fi, *fo;    fi and fo as standard input/output
*      char *user;             user name
*
*      return codes:
*              0  - ok
*              non zero -  failed  -  status from child
*/

shio(cmd, fi, fo, user)
char *cmd, *fi, *fo, *user;
{
       int status, f;
       int uid, pid, ret;
       char path[MAXFULLNAME];

       if (fi == NULL)
               fi = "/dev/null";
       if (fo == NULL)
               fo = "/dev/null";

       DEBUG(3, "shio - %s\n", cmd);
       if ((pid = fork()) == 0) {
               close(Ifn);
               close(Ofn);
               close(0);
               f = open(fi, 0);
               ASSERT(f == 0, "BAD OPEN fileno %d", f);
               close(1);
               f = creat(fo, 0666);
               ASSERT(f == 1, "BAD OPEN fileno %d", f);
               if (gninfo(user, &uid, path) == 0)
                       setuid(uid);
               execl(SHELL, "sh", "-c", cmd, 0);
               exit(100);
       }
       while ((ret = wait(&status)) != pid && ret != -1);
       DEBUG(3, "status %d\n", status);
       return(status);
}