archie/prospero/lib/pfs/pfs_fopen.c

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2024-05-27 16:13:40 +02:00
/*
* Copyright (c) 1991-1993 by the University of Southern California
*
* For copying and distribution information, please see the file
* <usc-license.h>.
*/
#include <usc-license.h>
#include <stdio.h>
#include <string.h>
#include <sys/types.h>
#include <sys/file.h>
#include <sys/param.h>
#include <errno.h>
#include <pfs.h>
#include <pcompat.h>
#include <perrno.h>
#include <pmachine.h>
/*SEE: pfs_open if you want a fd instead of a file returned */
FILE *pfs_fopen(VLINK vl, const char *type)
{
char npath[MAXPATHLEN];
int tmp;
int mapflags;
FILE *fopen_return;
if(strcmp(type,"r") == 0) mapflags = MAP_READONLY;
else mapflags = MAP_READWRITE;
tmp = mapname(vl, npath, sizeof npath, mapflags);
if(tmp && (tmp != PMC_DELETE_ON_CLOSE)) {
errno = ENOENT;
return(NULL);
}
DISABLE_PFS(fopen_return = fopen(npath,type));
if(tmp == PMC_DELETE_ON_CLOSE) unlink(npath);
return(fopen_return);
}