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Annotation of src/usr.bin/rsync/mkpath.c, Revision 1.5

1.5     ! claudio     1: /*     $OpenBSD: mkpath.c,v 1.4 2019/05/08 21:30:11 benno Exp $ */
1.1       benno       2: /*
                      3:  * Copyright (c) 1983, 1992, 1993
                      4:  *     The Regents of the University of California.  All rights reserved.
                      5:  *
                      6:  * Redistribution and use in source and binary forms, with or without
                      7:  * modification, are permitted provided that the following conditions
                      8:  * are met:
                      9:  * 1. Redistributions of source code must retain the above copyright
                     10:  *    notice, this list of conditions and the following disclaimer.
                     11:  * 2. Redistributions in binary form must reproduce the above copyright
                     12:  *    notice, this list of conditions and the following disclaimer in the
                     13:  *    documentation and/or other materials provided with the distribution.
                     14:  * 3. Neither the name of the University nor the names of its contributors
                     15:  *    may be used to endorse or promote products derived from this software
                     16:  *    without specific prior written permission.
                     17:  *
                     18:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
                     19:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
                     20:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
                     21:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
                     22:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
                     23:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
                     24:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
                     25:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
                     26:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
                     27:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
                     28:  * SUCH DAMAGE.
                     29:  */
                     30:
                     31: #include <sys/types.h>
                     32: #include <sys/stat.h>
                     33: #include <errno.h>
                     34: #include <stdint.h>
                     35: #include <string.h>
                     36:
                     37: #include "extern.h"
                     38:
                     39: /* Code taken directly from mkdir(1).
                     40:
                     41:  * mkpath -- create directories.
                     42:  *     path     - path
                     43:  */
                     44: int
1.4       benno      45: mkpath(char *path)
1.1       benno      46: {
                     47:        struct stat sb;
                     48:        char *slash;
1.5     ! claudio    49:        int done;
1.1       benno      50:
                     51:        slash = path;
                     52:
1.5     ! claudio    53:        for (;;) {
1.1       benno      54:                slash += strspn(slash, "/");
                     55:                slash += strcspn(slash, "/");
                     56:
                     57:                done = (*slash == '\0');
                     58:                *slash = '\0';
                     59:
1.5     ! claudio    60:                if (mkdir(path, 0777) != 0) {
        !            61:                        int mkdir_errno = errno;
        !            62:
        !            63:                        if (stat(path, &sb) == -1) {
        !            64:                                /* Not there; use mkdir()s errno */
        !            65:                                errno = mkdir_errno;
        !            66:                                return (-1);
        !            67:                        }
        !            68:                        if (!S_ISDIR(sb.st_mode)) {
        !            69:                                /* Is there, but isn't a directory */
        !            70:                                errno = ENOTDIR;
1.1       benno      71:                                return (-1);
                     72:                        }
                     73:                }
1.5     ! claudio    74:
        !            75:                if (done)
        !            76:                        break;
1.1       benno      77:
                     78:                *slash = '/';
                     79:        }
                     80:
                     81:        return (0);
                     82: }