source: MondoRescue/branches/stable/mindi-busybox/libbb/device_open.c @ 821

Last change on this file since 821 was 821, checked in by Bruno Cornec, 14 years ago

Addition of busybox 1.2.1 as a mindi-busybox new package
This should avoid delivering binary files in mindi not built there (Fedora and Debian are quite serious about that)

File size: 619 bytes
Line 
1/* vi: set sw=4 ts=4: */
2/*
3 * Utility routines.
4 *
5 * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
6 *
7 * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
8 */
9
10#include <stdio.h>
11#include <fcntl.h>
12#include "libbb.h"
13
14
15/* try to open up the specified device */
16int device_open(const char *device, int mode)
17{
18    int m, f, fd = -1;
19
20    m = mode | O_NONBLOCK;
21
22    /* Retry up to 5 times */
23    for (f = 0; f < 5; f++)
24        if ((fd = open(device, m, 0600)) >= 0)
25            break;
26    if (fd < 0)
27        return fd;
28    /* Reset original flags. */
29    if (m != mode)
30        fcntl(fd, F_SETFL, mode);
31    return fd;
32}
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