d/freebsd-skq
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1) Clarify that a weof count of zero is allowed (flush buffers).

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2) Add in the set of {sethpos,setspos,rdhpos,rdspos) commands to implement the
Hardware && SCSI Logical Block position ioctls.
This commit is contained in:
Matt Jacob 1998-12-18 02:02:20 +00:00
parent 12e25f330b
commit 69765472a3
1 changed files with 30 additions and 1 deletions
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31
usr.bin/mt/mt.c
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@ -42,7 +42,7 @@ static const char copyright[] =
static char sccsid[] = "@(#)mt.c 8.2 (Berkeley) 5/4/95";
#endif
static const char rcsid[] =
"$Id: mt.c,v 1.15 1998/09/15 10:28:20 gibbs Exp $";
"$Id: mt.c,v 1.16 1998/10/03 10:58:54 dfr Exp $";
#endif /* not lint */
/*
@ -101,7 +101,11 @@ struct commands {
{ "rewind", MTREW, 1 },
{ "rewoffl", MTOFFL, 1 },
{ "status", MTNOP, 1 },
#if defined(__FreeBSD__)
{ "weof", MTWEOF, 0, ZERO_ALLOWED },
#else
{ "weof", MTWEOF, 0 },
#endif
#if defined(__FreeBSD__)
{ "erase", MTERASE, 0, ZERO_ALLOWED},
{ "blocksize", MTSETBSIZ, 0, NEED_2ARGS|ZERO_ALLOWED },
@ -110,6 +114,10 @@ struct commands {
{ "eod", MTEOD, 1 },
{ "comp", MTCOMP, 0, NEED_2ARGS|ZERO_ALLOWED|IS_COMP },
{ "retension", MTRETENS, 1 },
{ "rdhpos", MTIOCRDHPOS, 0 },
{ "rdspos", MTIOCRDSPOS, 0 },
{ "sethpos", MTIOCHLOCATE, 0, NEED_2ARGS|ZERO_ALLOWED },
{ "setspos", MTIOCSLOCATE, 0, NEED_2ARGS|ZERO_ALLOWED },
#endif /* defined(__FreeBSD__) */
{ NULL }
};
@ -215,6 +223,27 @@ main(argc, argv)
}
else
mt_com.mt_count = 1;
#if defined(__FreeBSD__)
switch (comp->c_code) {
case MTIOCRDHPOS:
case MTIOCRDSPOS:
if (ioctl(mtfd, comp->c_code, &mt_com.mt_count) < 0)
err(2, "%s", tape);
printf("%s: %s block location %u\n", tape,
(comp->c_code == MTIOCRDHPOS)? "hardware" :
"logical", (unsigned int) mt_com.mt_count);
exit (0);
/* NOTREACHED */
case MTIOCSLOCATE:
case MTIOCHLOCATE:
if (ioctl(mtfd, comp->c_code, &mt_com.mt_count) < 0)
err(2, "%s", tape);
exit (0);
/* NOTREACHED */
default:
break;
}
#endif
if (ioctl(mtfd, MTIOCTOP, &mt_com) < 0)
err(1, "%s: %s", tape, comp->c_name);
} else {