ref: e391b7ec8c0dc746a70725f3fc598def0419d1e6
dir: /sys/src/ape/cmd/pax/port.c/
/* $Source: /u/mark/src/pax/RCS/port.c,v $
*
* $Revision: 1.2 $
*
* port.c - These are routines not available in all environments.
*
* DESCRIPTION
*
* The routines contained in this file are provided for portability to
* other versions of UNIX or other operating systems (e.g. MSDOS).
* Not all systems have the same functions or the same semantics,
* these routines attempt to bridge the gap as much as possible.
*
* AUTHOR
*
* Mark H. Colburn, NAPS International (mark@jhereg.mn.org)
* John Gilmore (gnu@hoptoad)
*
* Sponsored by The USENIX Association for public distribution.
*
* Copyright (c) 1989 Mark H. Colburn.
* All rights reserved.
*
* Redistribution and use in source and binary forms are permitted
* provided that the above copyright notice is 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 Mark H. Colburn and sponsored by The
* USENIX Association.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*
* $Log: port.c,v $
* Revision 1.2 89/02/12 10:05:35 mark
* 1.2 release fixes
*
* Revision 1.1 88/12/23 18:02:29 mark
* Initial revision
*
*/
#ifndef lint
static char *ident = "$Id: port.c,v 1.2 89/02/12 10:05:35 mark Exp $";
static char *copyright = "Copyright (c) 1989 Mark H. Colburn.\nAll rights reserved.\n";
#endif /* ! lint */
/* Headers */
#include "pax.h"
/*
* Some computers are not so crass as to align themselves into the BSD or USG
* camps. If a system supplies all of the routines we fake here, add it to
* the list in the #if !defined()'s below and it'll all be skipped.
*/
#if !defined(mc300) && !defined(mc500) && !defined(mc700) && !defined(BSD) && !defined(_POSIX_SOURCE)
/* mkdir - make a directory
*
* DESCRIPTION
*
* Mkdir will make a directory of the name "dpath" with a mode of
* "dmode". This is consistent with the BSD mkdir() function and the
* P1003.1 definitions of MKDIR.
*
* PARAMETERS
*
* dpath - name of directory to create
* dmode - mode of the directory
*
* RETURNS
*
* Returns 0 if the directory was successfully created, otherwise a
* non-zero return value will be passed back to the calling function
* and the value of errno should reflect the error.
*/
#ifdef __STDC__
int mkdir(char *dpath, int dmode)
#else
int mkdir(dpath, dmode)
char *dpath;
int dmode;
#endif
{
int cpid, status;
Stat statbuf;
extern int errno;
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 (errno != ENOENT)
return (-1);
switch (cpid = fork()) {
case -1: /* Error in fork() */
return (-1); /* Errno is set already */
case 0: /* Child process */
status = umask(0); /* Get current umask */
status = umask(status | (0777 & ~dmode)); /* Set for mkdir */
execl("/bin/mkdir", "mkdir", dpath, (char *) 0);
_exit(-1); /* Can't exec /bin/mkdir */
default: /* Parent process */
while (cpid != wait(&status)) {
/* Wait for child to finish */
}
}
if (TERM_SIGNAL(status) != 0 || TERM_VALUE(status) != 0) {
errno = EIO; /* We don't know why, but */
return (-1); /* /bin/mkdir failed */
}
return (0);
}
/* rmdir - remove a directory
*
* DESCRIPTION
*
* Rmdir will remove the directory specified by "dpath". It is
* consistent with the BSD and POSIX rmdir functions.
*
* PARAMETERS
*
* dpath - name of directory to remove
*
* RETURNS
*
* Returns 0 if the directory was successfully deleted, otherwise a
* non-zero return value will be passed back to the calling function
* and the value of errno should reflect the error.
*/
#ifdef __STDC__
int rmdir(char *dpath)
#else
int rmdir(dpath)
char *dpath;
#endif
{
int cpid, status;
Stat statbuf;
extern int errno;
/* check to see if it exists */
if (STAT(dpath, &statbuf) == -1) {
return (-1);
}
switch (cpid = fork()) {
case -1: /* Error in fork() */
return (-1); /* Errno is set already */
case 0: /* Child process */
execl("/bin/rmdir", "rmdir", dpath, (char *) 0);
_exit(-1); /* Can't exec /bin/rmdir */
default: /* Parent process */
while (cpid != wait(&status)) {
/* Wait for child to finish */
}
}
if (TERM_SIGNAL(status) != 0 || TERM_VALUE(status) != 0) {
errno = EIO; /* We don't know why, but */
return (-1); /* /bin/rmdir failed */
}
return (0);
}
#endif /* MASSCOMP, BSD */