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tape_daemon.c
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C/C++ Source or Header
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1992-10-08
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929b
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53 lines
/* Tape daemon. */
/*
* tape_daemon.c,v 1.4 1992/10/09 02:42:11 dbrown Exp
*
* tape_daemon.c,v
* Revision 1.4 1992/10/09 02:42:11 dbrown
* Check for error on fork.
*
* Revision 1.3 1992/03/27 21:17:51 dbrown
* Added sleep before retry.
*
* Revision 1.2 92/03/27 02:06:38 dbrown
* Included sys/file.h
*
* Revision 1.1 92/03/27 02:05:29 dbrown
* Initial revision
*
*/
#include <sys/resource.h>
#include <sys/file.h>
#include <stdio.h>
#include <errno.h>
extern int errno;
main ()
{
int fd;
if (fork () != 0)
exit ();
setpriority (PRIO_PROCESS, getpid (), -20);
while (1)
{
fd = open ("/dev/fdtape_process", O_RDWR);
if (fd >= 0)
{
fprintf (stderr, "Error, fdtape daemon: driver opened incorrectly\n");
exit (1);
}
if (errno != EIO)
{
fprintf (stderr, "Tape daemon: Tape device not present.\n");
exit (1);
}
sleep (1); /* Why? */
}
}