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65 lines
1.6 KiB
C
65 lines
1.6 KiB
C
/*
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* Copyright (C) 2001 Sistina Software
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*
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* This LVM library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This LVM library 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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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this LVM library; if not, write to the Free
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* Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
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* MA 02111-1307, USA
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*/
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <sys/mman.h>
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#include <stdio.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <ctype.h>
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#include <string.h>
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#include <errno.h>
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#include <sys/ioctl.h>
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#include <linux/fs.h>
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#include <linux/major.h>
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#include <linux/genhd.h>
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#include "device.h"
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#include "log.h"
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int do_ioctl(const char *file, int mode, unsigned long cmd, void *req)
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{
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int ret, fd;
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if ((fd = open(file, mode)) < 0) {
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log_sys_err("open");
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return errno;
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}
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if ((ret = ioctl(fd, cmd, req)) < 0) {
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log_sys_err("ioctl");
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ret = errno;
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}
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close(fd);
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return ret;
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}
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int device_get_size(const char *dev_name)
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{
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int ret, r;
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log_verbose("Getting device size");
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if (!(ret = do_ioctl(dev_name, O_RDONLY, BLKGETSIZE, &r)))
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return r;
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return ret;
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}
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