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/*-
* See the file LICENSE for redistribution information.
*
* Copyright (c) 1997,2007 Oracle. All rights reserved.
*
* $Id: os_oflags.c,v 12.10 2007/05/17 15:15:46 bostic Exp $
*/
#include "db_config.h"
#include "db_int.h"
#ifdef HAVE_SYSTEM_INCLUDE_FILES
#ifdef HAVE_SHMGET
#include <sys/ipc.h>
#include <sys/shm.h>
#endif
#endif
/*
* Ensure that POSIX defined codes are available.
*/
#ifndef O_CREAT
#define O_CREAT 0x0200
#endif
#ifndef O_TRUNC
#define O_TRUNC 0x0400
#endif
#ifndef O_RDONLY
#define O_RDONLY 0x0000
#endif
#ifndef O_RDWR
#define O_RDWR 0x0002
#endif
#ifndef O_WRONLY
#define O_WRONLY 0x0001
#endif
#ifndef S_IREAD
#define S_IREAD 0000400
#endif
#ifndef S_IWRITE
#define S_IWRITE 0000200
#endif
/*
* __db_oflags --
* Convert open(2) flags to DB flags.
*
* PUBLIC: u_int32_t __db_oflags __P((int));
*/
u_int32_t
__db_oflags(oflags)
int oflags;
{
u_int32_t dbflags;
dbflags = 0;
if (oflags & O_CREAT)
dbflags |= DB_CREATE;
if (oflags & O_TRUNC)
dbflags |= DB_TRUNCATE;
/*
* !!!
* Convert POSIX 1003.1 open(2) mode flags to DB flags. This isn't
* an exact science as few POSIX implementations have a flag value
* for O_RDONLY, it's simply the lack of a write flag.
*/
#ifndef O_ACCMODE
#define O_ACCMODE (O_RDONLY | O_RDWR | O_WRONLY)
#endif
switch (oflags & O_ACCMODE) {
case O_RDWR:
case O_WRONLY:
break;
default:
dbflags |= DB_RDONLY;
break;
}
return (dbflags);
}
#ifdef DB_WIN32
#ifndef S_IRUSR
#define S_IRUSR S_IREAD /* R for owner */
#endif
#ifndef S_IWUSR
#define S_IWUSR S_IWRITE /* W for owner */
#endif
#ifndef S_IXUSR
#define S_IXUSR 0 /* X for owner */
#endif
#ifndef S_IRGRP
#define S_IRGRP 0 /* R for group */
#endif
#ifndef S_IWGRP
#define S_IWGRP 0 /* W for group */
#endif
#ifndef S_IXGRP
#define S_IXGRP 0 /* X for group */
#endif
#ifndef S_IROTH
#define S_IROTH 0 /* R for other */
#endif
#ifndef S_IWOTH
#define S_IWOTH 0 /* W for other */
#endif
#ifndef S_IXOTH
#define S_IXOTH 0 /* X for other */
#endif
#else
#ifndef S_IRUSR
#define S_IRUSR 0000400 /* R for owner */
#endif
#ifndef S_IWUSR
#define S_IWUSR 0000200 /* W for owner */
#endif
#ifndef S_IXUSR
#define S_IXUSR 0000100 /* X for owner */
#endif
#ifndef S_IRGRP
#define S_IRGRP 0000040 /* R for group */
#endif
#ifndef S_IWGRP
#define S_IWGRP 0000020 /* W for group */
#endif
#ifndef S_IXGRP
#define S_IXGRP 0000010 /* X for group */
#endif
#ifndef S_IROTH
#define S_IROTH 0000004 /* R for other */
#endif
#ifndef S_IWOTH
#define S_IWOTH 0000002 /* W for other */
#endif
#ifndef S_IXOTH
#define S_IXOTH 0000001 /* X for other */
#endif
#endif /* DB_WIN32 */
/*
* __db_omode --
* Convert a permission string to the correct open(2) flags.
*
* PUBLIC: int __db_omode __P((const char *));
*/
int
__db_omode(perm)
const char *perm;
{
int mode;
mode = 0;
if (perm[0] == 'r')
mode |= S_IRUSR;
if (perm[1] == 'w')
mode |= S_IWUSR;
if (perm[2] == 'x')
mode |= S_IXUSR;
if (perm[3] == 'r')
mode |= S_IRGRP;
if (perm[4] == 'w')
mode |= S_IWGRP;
if (perm[5] == 'x')
mode |= S_IXGRP;
if (perm[6] == 'r')
mode |= S_IROTH;
if (perm[7] == 'w')
mode |= S_IWOTH;
if (perm[8] == 'x')
mode |= S_IXOTH;
return (mode);
}
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