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Annotation of 43BSD/bin/strip.c, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1983 Regents of the University of California.
        !             3:  * All rights reserved.  The Berkeley software License Agreement
        !             4:  * specifies the terms and conditions for redistribution.
        !             5:  */
        !             6: 
        !             7: #ifndef lint
        !             8: char copyright[] =
        !             9: "@(#) Copyright (c) 1983 Regents of the University of California.\n\
        !            10:  All rights reserved.\n";
        !            11: #endif not lint
        !            12: 
        !            13: #ifndef lint
        !            14: static char sccsid[] = "@(#)strip.c    5.1 (Berkeley) 4/30/85";
        !            15: #endif not lint
        !            16: 
        !            17: #include <a.out.h>
        !            18: #include <signal.h>
        !            19: #include <stdio.h>
        !            20: #include <sys/file.h>
        !            21: 
        !            22: struct exec head;
        !            23: int    status;
        !            24: int    pagesize;
        !            25: 
        !            26: main(argc, argv)
        !            27:        char *argv[];
        !            28: {
        !            29:        register i;
        !            30: 
        !            31:        pagesize = getpagesize();
        !            32:        signal(SIGHUP, SIG_IGN);
        !            33:        signal(SIGINT, SIG_IGN);
        !            34:        signal(SIGQUIT, SIG_IGN);
        !            35:        for (i = 1; i < argc; i++) {
        !            36:                strip(argv[i]);
        !            37:                if (status > 1)
        !            38:                        break;
        !            39:        }
        !            40:        exit(status);
        !            41: }
        !            42: 
        !            43: strip(name)
        !            44:        char *name;
        !            45: {
        !            46:        register f;
        !            47:        long size;
        !            48: 
        !            49:        f = open(name, O_RDWR);
        !            50:        if (f < 0) {
        !            51:                fprintf(stderr, "strip: "); perror(name);
        !            52:                status = 1;
        !            53:                goto out;
        !            54:        }
        !            55:        if (read(f, (char *)&head, sizeof (head)) < 0 || N_BADMAG(head)) {
        !            56:                printf("strip: %s not in a.out format\n", name);
        !            57:                status = 1;
        !            58:                goto out;
        !            59:        }
        !            60:        if ((head.a_syms == 0) && (head.a_trsize == 0) && (head.a_drsize ==0)) {
        !            61:                printf("strip: %s already stripped\n", name);
        !            62:                goto out;
        !            63:        }
        !            64:        size = (long)head.a_text + head.a_data;
        !            65:        head.a_syms = head.a_trsize = head.a_drsize = 0;
        !            66:        if (head.a_magic == ZMAGIC)
        !            67:                size += pagesize - sizeof (head);
        !            68:        if (ftruncate(f, size + sizeof (head)) < 0) {
        !            69:                fprintf("strip: "); perror(name);
        !            70:                status = 1;
        !            71:                goto out;
        !            72:        }
        !            73:        (void) lseek(f, (long)0, L_SET);
        !            74:        (void) write(f, (char *)&head, sizeof (head));
        !            75: out:
        !            76:        close(f);
        !            77: }

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