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Annotation of 41BSD/cmd/lock.c, revision 1.1.1.1

1.1       root        1: static char *sccsid = "@(#)lock.c      4.1 (Berkeley) 10/1/80";
                      2: #include <stdio.h>
                      3: #include <sys/types.h>
                      4: #include <stat.h>
                      5: #include <signal.h>
                      6: #include <sgtty.h>
                      7: 
                      8: /*
                      9:  * Lock a terminal up until the knowledgeable Joe returns.
                     10:  */
                     11: char   masterp[] =     "hasta la vista\n";
                     12: struct sgttyb tty, ntty;
                     13: char   s[BUFSIZ], s1[BUFSIZ];
                     14: 
                     15: main(argc, argv)
                     16:        char **argv;
                     17: {
                     18:        register int t;
                     19:        struct stat statb;
                     20: 
                     21:        for (t = 1; t <= 16; t++)
                     22:                if (t != SIGHUP)
                     23:                signal(t, SIG_IGN);
                     24:        if (argc > 0)
                     25:                argv[0] = 0;
                     26:        if (gtty(0, &tty))
                     27:                exit(1);
                     28:        ntty = tty; ntty.sg_flags &= ~ECHO;
                     29:        stty(0, &ntty);
                     30:        printf("Key: ");
                     31:        fgets(s, sizeof s, stdin);
                     32:        printf("\nAgain: ");
                     33:        fgets(s1, sizeof s1, stdin);
                     34:        putchar('\n');
                     35:        if (strcmp(s1, s)) {
                     36:                putchar(07);
                     37:                stty(0, &tty);
                     38:                exit(1);
                     39:        }
                     40:        s[0] = 0;
                     41:        for (;;) {
                     42:                fgets(s, sizeof s, stdin);
                     43:                if (strcmp(s1, s) == 0)
                     44:                        break;
                     45:                if (strcmp(s, masterp) == 0)
                     46:                        break;
                     47:                putchar(07);
                     48:                if (gtty(0, &ntty))
                     49:                        exit(1);
                     50:        }
                     51:        stty(0, &tty);
                     52: }

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