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Annotation of 43BSDReno/pgrm/strip/strip.c, revision 1.1.1.1

1.1       root        1: /*
                      2:  * Copyright (c) 1988 Regents of the University of California.
                      3:  * All rights reserved.
                      4:  *
                      5:  * Redistribution and use in source and binary forms are permitted
                      6:  * provided that: (1) source distributions retain this entire copyright
                      7:  * notice and comment, and (2) distributions including binaries display
                      8:  * the following acknowledgement:  ``This product includes software
                      9:  * developed by the University of California, Berkeley and its contributors''
                     10:  * in the documentation or other materials provided with the distribution
                     11:  * and in all advertising materials mentioning features or use of this
                     12:  * software. Neither the name of the University nor the names of its
                     13:  * contributors may be used to endorse or promote products derived
                     14:  * from this software without specific prior written permission.
                     15:  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
                     16:  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
                     17:  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
                     18:  */
                     19: 
                     20: #ifndef lint
                     21: char copyright[] =
                     22: "@(#) Copyright (c) 1988 Regents of the University of California.\n\
                     23:  All rights reserved.\n";
                     24: #endif /* not lint */
                     25: 
                     26: #ifndef lint
                     27: static char sccsid[] = "@(#)strip.c    5.5 (Berkeley) 6/1/90";
                     28: #endif /* not lint */
                     29: 
                     30: #include <sys/types.h>
                     31: #include <sys/file.h>
                     32: #include <a.out.h>
                     33: #include <stdio.h>
                     34: 
                     35: typedef struct exec EXEC;
                     36: 
                     37: /* ARGSUSED */
                     38: main(argc, argv)
                     39:        int argc;
                     40:        char **argv;
                     41: {
                     42:        register off_t fsize;
                     43:        register int fd, n, pagesize;
                     44:        EXEC head;
                     45:        off_t lseek();
                     46: 
                     47:        pagesize = getpagesize();
                     48:        while (*++argv) {
                     49:                if ((fd = open(*argv, O_RDWR)) < 0 ||
                     50:                    (n = read(fd, (char *)&head, sizeof(EXEC))) == -1)
                     51:                        error(*argv);
                     52:                if (n != sizeof(EXEC) || N_BADMAG(head)) {
                     53:                        (void)fprintf(stderr,
                     54:                            "strip: %s not in a.out format.\n", *argv);
                     55:                        exit(1);
                     56:                }
                     57:                if (!head.a_syms && !head.a_trsize && !head.a_drsize)
                     58:                        continue;
                     59:                fsize = head.a_text + head.a_data;
                     60:                if (head.a_magic == ZMAGIC)
                     61:                        fsize += pagesize - sizeof(EXEC);
                     62:                head.a_syms = head.a_trsize = head.a_drsize = 0;
                     63:                if (ftruncate(fd, fsize + sizeof(EXEC)) ||
                     64:                    lseek(fd, 0L, L_SET) == -1 ||
                     65:                    write(fd, (char *)&head, sizeof(EXEC)) != sizeof(EXEC))
                     66:                        error(*argv);
                     67:                (void)close(fd);
                     68:        }
                     69:        exit(0);
                     70: }
                     71: 
                     72: error(fname)
                     73:        char *fname;
                     74: {
                     75:        extern int errno;
                     76:        char *strerror();
                     77: 
                     78:        (void)fprintf(stderr, "strip: %s: %s.\n", fname, strerror(errno));
                     79:        exit(1);
                     80: }

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