1N/A/*-
1N/A * See the file LICENSE for redistribution information.
1N/A *
1N/A * Copyright (c) 1997, 1998
1N/A * Sleepycat Software. All rights reserved.
1N/A */
1N/A
1N/A#include "config.h"
1N/A
1N/A#ifndef lint
1N/Astatic const char sccsid[] = "@(#)os_open.c 10.33 (Sleepycat) 10/12/98";
1N/A#endif /* not lint */
1N/A
1N/A#ifndef NO_SYSTEM_INCLUDES
1N/A#include <sys/types.h>
1N/A
1N/A#include <errno.h>
1N/A#include <fcntl.h>
1N/A#include <signal.h>
1N/A#include <unistd.h>
1N/A#endif
1N/A
1N/A#include "db_int.h"
1N/A#include "os_jump.h"
1N/A
1N/A/*
1N/A * __db_open --
1N/A * Open a file descriptor.
1N/A *
1N/A * PUBLIC: int __db_open __P((const char *, u_int32_t, u_int32_t, int, int *));
1N/A */
1N/Aint
1N/A__db_open(name, arg_flags, ok_flags, mode, fdp)
1N/A const char *name;
1N/A u_int32_t arg_flags, ok_flags;
1N/A int mode, *fdp;
1N/A{
1N/A#if !defined(_WIN32) && defined(HAVE_SIGFILLSET)
1N/A sigset_t set, oset;
1N/A#endif
1N/A int flags, ret;
1N/A
1N/A if (arg_flags & ~ok_flags)
1N/A return (EINVAL);
1N/A
1N/A flags = 0;
1N/A
1N/A /*
1N/A * DB requires the semantic that two files opened at the same time
1N/A * with O_CREAT and O_EXCL set will return failure in at least one.
1N/A */
1N/A if (arg_flags & DB_CREATE)
1N/A flags |= O_CREAT;
1N/A
1N/A if (arg_flags & DB_EXCL)
1N/A flags |= O_EXCL;
1N/A
1N/A if (arg_flags & DB_RDONLY)
1N/A flags |= O_RDONLY;
1N/A else
1N/A flags |= O_RDWR;
1N/A
1N/A#if defined(_WIN32) || defined(WIN16)
1N/A#ifdef _MSC_VER
1N/A if (arg_flags & DB_SEQUENTIAL)
1N/A flags |= _O_SEQUENTIAL;
1N/A else
1N/A flags |= _O_RANDOM;
1N/A
1N/A if (arg_flags & DB_TEMPORARY)
1N/A flags |= _O_TEMPORARY;
1N/A#endif
1N/A flags |= O_BINARY | O_NOINHERIT;
1N/A#endif
1N/A
1N/A if (arg_flags & DB_TRUNCATE)
1N/A flags |= O_TRUNC;
1N/A
1N/A#if !defined(_WIN32) && defined(HAVE_SIGFILLSET)
1N/A /*
1N/A * We block every signal we can get our hands on so that the temporary
1N/A * file isn't left around if we're interrupted at the wrong time. Of
1N/A * course, if we drop core in-between the calls we'll hang forever, but
1N/A * that's probably okay. ;-)
1N/A */
1N/A if (arg_flags & DB_TEMPORARY) {
1N/A (void)sigfillset(&set);
1N/A (void)sigprocmask(SIG_BLOCK, &set, &oset);
1N/A }
1N/A#endif
1N/A
1N/A /* Open the file. */
1N/A if ((ret = __os_open(name, flags, mode, fdp)) != 0)
1N/A return (ret);
1N/A
1N/A#if !defined(_WIN32)
1N/A /* Delete any temporary file; done for Win32 by _O_TEMPORARY. */
1N/A if (arg_flags & DB_TEMPORARY) {
1N/A (void)__os_unlink(name);
1N/A#if defined(HAVE_SIGFILLSET)
1N/A (void)sigprocmask(SIG_SETMASK, &oset, NULL);
1N/A#endif
1N/A }
1N/A#endif
1N/A
1N/A#if !defined(_WIN32) && !defined(WIN16) && !defined(VMS)
1N/A /*
1N/A * Deny access to any child process.
1N/A * VMS: does not have fd inheritance.
1N/A * Win32: done by O_NOINHERIT.
1N/A */
1N/A if (fcntl(*fdp, F_SETFD, 1) == -1) {
1N/A ret = errno;
1N/A
1N/A (void)__os_close(*fdp);
1N/A return (ret);
1N/A }
1N/A#endif
1N/A return (0);
1N/A}
1N/A
1N/A/*
1N/A * __os_open --
1N/A * Open a file.
1N/A *
1N/A * PUBLIC: int __os_open __P((const char *, int, int, int *));
1N/A */
1N/Aint
1N/A__os_open(name, flags, mode, fdp)
1N/A const char *name;
1N/A int flags, mode, *fdp;
1N/A{
1N/A *fdp = __db_jump.j_open != NULL ?
1N/A __db_jump.j_open(name, flags, mode) : open(name, flags, mode);
1N/A return (*fdp == -1 ? errno : 0);
1N/A}
1N/A
1N/A/*
1N/A * __os_close --
1N/A * Close a file descriptor.
1N/A *
1N/A * PUBLIC: int __os_close __P((int));
1N/A */
1N/Aint
1N/A__os_close(fd)
1N/A int fd;
1N/A{
1N/A int ret;
1N/A
1N/A ret = __db_jump.j_close != NULL ? __db_jump.j_close(fd) : close(fd);
1N/A return (ret == 0 ? 0 : errno);
1N/A}