on error, allow command character as well as return to continue

[unix-history] / usr / src / usr.bin / passwd / chsh.sh

diff --git a/usr/src/usr.bin/passwd/chsh.sh b/usr/src/usr.bin/passwd/chsh.sh
index 217cd38..fa440d6 100644 (file)
--- a/usr/src/usr.bin/passwd/chsh.sh
+++ b/usr/src/usr.bin/passwd/chsh.sh
@@ -1,126 +1,5 @@
-#ifndef lint
-static char *sccsid = "@(#)chsh.sh     4.5 (Berkeley) %G%";
-#endif
-
-/*
- * chsh
- */
-#include <stdio.h>
-#include <signal.h>
-#include <pwd.h>
-#include <sys/file.h>
-#include <time.h>
-#include <resource.h>
-
-char   passwd[] = "/etc/passwd";
-char   temp[]   = "/etc/ptmp";
-struct passwd *pwd;
-struct passwd *getpwent();
-int    endpwent();
-char   *crypt();
-char   *getpass();
-char   *strcat();
-char   buf[BUFSIZ];
-
-main(argc, argv)
-register char *argv[];
-{
-       register int u, fd;
-       register FILE *tf;
-
-       if (argc < 2 || argc > 3) {
-               printf("Usage: chsh user [ /bin/csh ]\n");
-               exit(1);
-       }
-       if (argc == 2)
-               argv[2] = "";
-       else {
-               if (argv[2][0] != '/')
-                       argv[2] = strcat(
-                           "/bin/\0 12345678901234567890123456789", argv[2]);
-               if (strcmp(argv[2], "/bin/csh") &&
-                   strcmp(argv[2], "/bin/oldcsh") &&
-                   strcmp(argv[2], "/bin/newcsh") &&
-                   strcmp(argv[2], "/usr/new/csh") &&
-                       /* and, for cretins who can't read the manual */
-                   strcmp(argv[2], "/bin/sh") &&
-                   getuid()) {
-                       printf(
-                           "Only /bin/csh may be specified\n"
-                       );
-                       exit(1);
-               }
-               if (access(argv[2], 1) < 0) {
-                       printf("%s is not available\n", argv[2]);
-                       exit(1);
-               }
-       }
-       unlimit(RLIMIT_CPU);
-       unlimit(RLIMIT_FSIZE);
-       while ((pwd=getpwent()) != NULL) {
-               if (strcmp(pwd->pw_name, argv[1]) == 0) {
-                       u = getuid();
-                       if (u!=0 && u != pwd->pw_uid) {
-                               printf("Permission denied.\n");
-                               exit(1);
-                       }
-                       break;
-               }
-       }
-       endpwent();
-
-       signal(SIGHUP, SIG_IGN);
-       signal(SIGINT, SIG_IGN);
-       signal(SIGQUIT, SIG_IGN);
-       signal(SIGTSTP, SIG_IGN);
-       if ((fd = open(temp, O_CREAT|O_EXCL|O_RDWR, 0644)) < 0) {
-               printf("Temporary file busy -- try again\n");
-               exit(1);
-       }
-       if ((tf=fdopen(fd, "w")) == NULL) {
-               printf("Absurd fdopen failure - seek help\n");
-               goto out;
-       }
-       /*
-        * Copy passwd to temp, replacing matching lines
-        * with new shell.
-        */
-       while ((pwd=getpwent()) != NULL) {
-               if (strcmp(pwd->pw_name, argv[1]) == 0) {
-                       u = getuid();
-                       if (u != 0 && u != pwd->pw_uid) {
-                               printf("Permission denied.\n");
-                               goto out;
-                       }
-                       pwd->pw_shell = argv[2];
-               }
-               if (strcmp(pwd->pw_shell, "/bin/sh") == 0)
-                       pwd->pw_shell = "";
-               fprintf(tf, "%s:%s:%d:%d:%s:%s:%s\n"
-                       , pwd->pw_name
-                       , pwd->pw_passwd
-                       , pwd->pw_uid
-                       , pwd->pw_gid
-                       , pwd->pw_gecos
-                       , pwd->pw_dir
-                       , pwd->pw_shell
-               );
-       }
-       endpwent();
-       if (rename(temp, passwd) < 0) {
-               fprintf(stderr, "chsh: "); perror("rename");
-  out:
-               unlink(temp);
-               exit(1);
-       }
-       fclose(tf);
-       exit(0);
-}
-
-unlimit(lim)
-{
-       struct rlimit rlim;
-
-       rlim.rlim_cur = rlim.rlim_max = RLIM_INFINITY;
-       setrlimit(lim, &rlim);
-}
+#!/bin/sh
+#
+#      @(#)chsh.sh     4.10 (Berkeley) %G%
+#
+echo 'Use "passwd -s"'