| 1 | /* mkdir.c -- BSD compatible make directory function for System V
|
|---|
| 2 | Copyright (C) 1988, 1990 Free Software Foundation, Inc.
|
|---|
| 3 |
|
|---|
| 4 | This program is free software; you can redistribute it and/or modify
|
|---|
| 5 | it under the terms of the GNU General Public License as published by
|
|---|
| 6 | the Free Software Foundation; either version 2, or (at your option)
|
|---|
| 7 | any later version.
|
|---|
| 8 |
|
|---|
| 9 | This program is distributed in the hope that it will be useful,
|
|---|
| 10 | but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|---|
| 11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|---|
| 12 | GNU General Public License for more details.
|
|---|
| 13 |
|
|---|
| 14 | You should have received a copy of the GNU General Public
|
|---|
| 15 | License along with this program; if not, write to the Free
|
|---|
| 16 | Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
|
|---|
| 17 | Boston, MA 02110-1301 USA. */
|
|---|
| 18 |
|
|---|
| 19 | #ifdef HAVE_CONFIG_H
|
|---|
| 20 | #include <config.h>
|
|---|
| 21 | #endif
|
|---|
| 22 |
|
|---|
| 23 | #include <sys/types.h>
|
|---|
| 24 | #include <sys/stat.h>
|
|---|
| 25 | #include <errno.h>
|
|---|
| 26 |
|
|---|
| 27 | #if !HAVE_DECL_ERRNO
|
|---|
| 28 | extern int errno;
|
|---|
| 29 | #endif
|
|---|
| 30 |
|
|---|
| 31 | #ifdef STAT_MACROS_BROKEN
|
|---|
| 32 | #undef S_ISDIR
|
|---|
| 33 | #endif
|
|---|
| 34 |
|
|---|
| 35 | #if !defined(S_ISDIR) && defined(S_IFDIR)
|
|---|
| 36 | #define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
|
|---|
| 37 | #endif
|
|---|
| 38 |
|
|---|
| 39 | #include "safe-stat.h"
|
|---|
| 40 |
|
|---|
| 41 | /* mkdir adapted from GNU tar. */
|
|---|
| 42 |
|
|---|
| 43 | /* Make directory DPATH, with permission mode DMODE.
|
|---|
| 44 |
|
|---|
| 45 | Written by Robert Rother, Mariah Corporation, August 1985
|
|---|
| 46 | (sdcsvax!rmr or rmr@uscd). If you want it, it's yours.
|
|---|
| 47 |
|
|---|
| 48 | Severely hacked over by John Gilmore to make a 4.2BSD compatible
|
|---|
| 49 | subroutine. 11Mar86; hoptoad!gnu
|
|---|
| 50 |
|
|---|
| 51 | Modified by rmtodd@uokmax 6-28-87 -- when making an already existing dir,
|
|---|
| 52 | subroutine didn't return EEXIST. It does now. */
|
|---|
| 53 |
|
|---|
| 54 | int
|
|---|
| 55 | mkdir (dpath, dmode)
|
|---|
| 56 | char *dpath;
|
|---|
| 57 | int dmode;
|
|---|
| 58 | {
|
|---|
| 59 | int cpid, status;
|
|---|
| 60 | struct stat statbuf;
|
|---|
| 61 |
|
|---|
| 62 | if (SAFE_STAT (dpath, &statbuf) == 0)
|
|---|
| 63 | {
|
|---|
| 64 | errno = EEXIST; /* stat worked, so it already exists. */
|
|---|
| 65 | return -1;
|
|---|
| 66 | }
|
|---|
| 67 |
|
|---|
| 68 | /* If stat fails for a reason other than non-existence, return error. */
|
|---|
| 69 | if (errno != ENOENT)
|
|---|
| 70 | return -1;
|
|---|
| 71 |
|
|---|
| 72 | cpid = fork ();
|
|---|
| 73 | switch (cpid)
|
|---|
| 74 | {
|
|---|
| 75 | case -1: /* Cannot fork. */
|
|---|
| 76 | return -1; /* errno is already set. */
|
|---|
| 77 |
|
|---|
| 78 | case 0: /* Child process. */
|
|---|
| 79 | /* Cheap hack to set mode of new directory. Since this child
|
|---|
| 80 | process is going away anyway, we zap its umask.
|
|---|
| 81 | This won't suffice to set SUID, SGID, etc. on this
|
|---|
| 82 | directory, so the parent process calls chmod afterward. */
|
|---|
| 83 | status = umask (0); /* Get current umask. */
|
|---|
| 84 | umask (status | (0777 & ~dmode)); /* Set for mkdir. */
|
|---|
| 85 | execl ("/bin/mkdir", "mkdir", dpath, (char *) 0);
|
|---|
| 86 | _exit (1);
|
|---|
| 87 |
|
|---|
| 88 | default: /* Parent process. */
|
|---|
| 89 | /* Wait for kid to finish. */
|
|---|
| 90 | while (wait (&status) != cpid)
|
|---|
| 91 | /* Do nothing. */ ;
|
|---|
| 92 |
|
|---|
| 93 | if (status & 0xFFFF)
|
|---|
| 94 | {
|
|---|
| 95 | /* /bin/mkdir failed. */
|
|---|
| 96 | errno = EIO;
|
|---|
| 97 | return -1;
|
|---|
| 98 | }
|
|---|
| 99 | return chmod (dpath, dmode);
|
|---|
| 100 | }
|
|---|
| 101 | }
|
|---|
