/contrib/cvs/lib/mkdir.c
https://bitbucket.org/freebsd/freebsd-head/ · C · 125 lines · 76 code · 19 blank · 30 comment · 15 complexity · 754aa751fb316d2686f5d0d13a499511 MD5 · raw file
- /* mkrmdir.c -- BSD compatible directory functions for System V
- Copyright (C) 1988, 1990 Free Software Foundation, Inc.
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2, or (at your option)
- any later version.
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details. */
- #ifdef HAVE_CONFIG_H
- #include "config.h"
- #endif
- #include <sys/types.h>
- #include <sys/stat.h>
- #include <errno.h>
- #ifndef STDC_HEADERS
- extern int errno;
- #endif
- /* mkdir and rmdir adapted from GNU tar. */
- /* Make directory DPATH, with permission mode DMODE.
- Written by Robert Rother, Mariah Corporation, August 1985
- (sdcsvax!rmr or rmr@uscd). If you want it, it's yours.
- Severely hacked over by John Gilmore to make a 4.2BSD compatible
- subroutine. 11Mar86; hoptoad!gnu
- Modified by rmtodd@uokmax 6-28-87 -- when making an already existing dir,
- subroutine didn't return EEXIST. It does now. */
- int
- mkdir (dpath, dmode)
- const char *dpath;
- int dmode;
- {
- int cpid, status;
- struct stat statbuf;
- if (stat (dpath, &statbuf) == 0)
- {
- errno = EEXIST; /* stat worked, so it already exists. */
- return -1;
- }
- /* If stat fails for a reason other than non-existence, return error. */
- if (! existence_error (errno))
- return -1;
- cpid = fork ();
- switch (cpid)
- {
- case -1: /* Cannot fork. */
- return -1; /* errno is set already. */
- case 0: /* Child process. */
- /* Cheap hack to set mode of new directory. Since this child
- process is going away anyway, we zap its umask.
- This won't suffice to set SUID, SGID, etc. on this
- directory, so the parent process calls chmod afterward. */
- status = umask (0); /* Get current umask. */
- umask (status | (0777 & ~dmode)); /* Set for mkdir. */
- execl ("/bin/mkdir", "mkdir", dpath, (char *) 0);
- _exit (1);
- default: /* Parent process. */
- while (wait (&status) != cpid) /* Wait for kid to finish. */
- /* Do nothing. */ ;
- if (status & 0xFFFF)
- {
- errno = EIO; /* /bin/mkdir failed. */
- return -1;
- }
- return chmod (dpath, dmode);
- }
- }
- /* Remove directory DPATH.
- Return 0 if successful, -1 if not. */
- int
- rmdir (dpath)
- char *dpath;
- {
- int cpid, status;
- struct stat statbuf;
- if (stat (dpath, &statbuf) != 0)
- return -1; /* stat set errno. */
- if ((statbuf.st_mode & S_IFMT) != S_IFDIR)
- {
- errno = ENOTDIR;
- return -1;
- }
- cpid = fork ();
- switch (cpid)
- {
- case -1: /* Cannot fork. */
- return -1; /* errno is set already. */
- case 0: /* Child process. */
- execl ("/bin/rmdir", "rmdir", dpath, (char *) 0);
- _exit (1);
- default: /* Parent process. */
- while (wait (&status) != cpid) /* Wait for kid to finish. */
- /* Do nothing. */ ;
- if (status & 0xFFFF)
- {
- errno = EIO; /* /bin/rmdir failed. */
- return -1;
- }
- return 0;
- }
- }