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  • Committer: Bazaar Package Importer
  • Author(s): Martin Mitchell
  • Date: 2001-04-08 21:11:58 UTC
  • Revision ID: james.westby@ubuntu.com-20010408211158-js9q3jnoon2l5qve
Tags: 1.6a-6
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initrd/freeramdisk.c
 
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#include <stdio.h>
 
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#include <string.h>
 
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#include <sys/mount.h>
 
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#include <sys/types.h>
 
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#include <sys/stat.h>
 
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#include <fcntl.h>
 
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#include <sys/ioctl.h>
 
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#include <errno.h>
 
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main(int argc, char **argv)
 
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{
 
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  char rname[256]="/dev/ram";
 
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  char b[256];
 
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  int f;
 
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  if (argv[1]) strcpy(rname,argv[1]);
 
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#if 0  /* don't use on a living system, /etc/mtab is not updated */ 
 
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  if (umount(rname) && (errno != ENOENT)) {
 
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    sprintf(b,"freeramdisk: cannot umount %s %d",rname,errno);
 
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    perror(b);
 
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    exit(1);
 
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  }
 
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#endif
 
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  if ((f=open(rname,O_RDWR)) == -1) {
 
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    sprintf(b,"freeramdisk: cannot open %s",rname);
 
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    perror(b);
 
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    exit(1);
 
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  }
 
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  ioctl(f,BLKFLSBUF);
 
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  close(f);
 
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}