add -p flag; POSIX 1003.2 compliant

[unix-history] / usr / src / bin / mkdir / mkdir.c

/*
* Copyright (c) 1983 Regents of the University of California.
* All rights reserved.
*
* Redistribution and use in source and binary forms are permitted
* provided that the above copyright notice and this paragraph are
* duplicated in all such forms and that any documentation,
* advertising materials, and other materials related to such
* distribution and use acknowledge that the software was developed
* by the University of California, Berkeley.  The name of the
* University may not be used to endorse or promote products derived
* from this software without specific prior written permission.
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*/

#ifndef lint
char copyright[] =
"@(#) Copyright (c) 1983 Regents of the University of California.\n\
All rights reserved.\n";
#endif /* not lint */

#ifndef lint
static char sccsid[] = "@(#)mkdir.c     5.4 (Berkeley) %G%";
#endif /* not lint */

#include <sys/types.h>
#include <sys/stat.h>
#include <errno.h>
#include <stdio.h>
#include <strings.h>

main(argc, argv)
       int argc;
       char **argv;
{
       extern int errno, optind;
       int ch, exitval, pflag;

       pflag = 0;
       while ((ch = getopt(argc, argv, "p")) != EOF)
               switch(ch) {
               case 'p':
                       pflag = 1;
                       break;
               case '?':
               default:
                       usage();
               }

       if (!*(argv += optind))
               usage();

       for (exitval = 0; *argv; ++argv)
               if (pflag)
                       exitval |= build(*argv);
               else if (mkdir(*argv, 0777) < 0) {
                       (void)fprintf(stderr, "mkdir: %s: %s\n",
                           *argv, strerror(errno));
                       exitval = 1;
               }
       exit(exitval);
}

build(path)
       char *path;
{
       register char *p;
       struct stat sb;
       int create, ch;

       for (create = 0, p = path;; ++p)
               if (!*p || *p  == '/') {
                       ch = *p;
                       *p = '\0';
                       if (stat(path, &sb)) {
                               if (errno != ENOENT || mkdir(path, 0777) < 0) {
                                       (void)fprintf(stderr, "mkdir: %s: %s\n",
                                           path, strerror(errno));
                                       return(1);
                               }
                               create = 1;
                       }
                       if (!(*p = ch))
                               break;
               }
       if (!create) {
               (void)fprintf(stderr, "mkdir: %s: %s\n", path,
                   strerror(EEXIST));
               return(1);
       }
       return(0);
}

usage()
{
       (void)fprintf(stderr, "usage: mkdir [-p] dirname ...\n");
       exit(1);
}