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60 lines
1.6 KiB
C
60 lines
1.6 KiB
C
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/* vi: set sw=4 ts=4: */
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/*
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* Utility routines.
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*
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* Copyright (C) tons of folks. Tracking down who wrote what
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* isn't something I'm going to worry about... If you wrote something
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* here, please feel free to acknowledge your work.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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* Based in part on code from sash, Copyright (c) 1999 by David I. Bell
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* Permission has been granted to redistribute this code under the GPL.
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*
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*/
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#include <stdio.h>
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#include <fcntl.h>
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#include "libbb.h"
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/* try to open up the specified device */
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extern int device_open(char *device, int mode)
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{
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int m, f, fd = -1;
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m = mode | O_NONBLOCK;
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/* Retry up to 5 times */
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for (f = 0; f < 5; f++)
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if ((fd = open(device, m, 0600)) >= 0)
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break;
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if (fd < 0)
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return fd;
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/* Reset original flags. */
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if (m != mode)
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fcntl(fd, F_SETFL, mode);
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return fd;
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}
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/* END CODE */
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/*
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Local Variables:
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c-file-style: "linux"
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c-basic-offset: 4
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tab-width: 4
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End:
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*/
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