Round #1 of my st(1) -> mt(1) merge. All the commands should be
covered now, and i've attempted to give textual representations instead of magic numbers. The st(4) driver still misses some pieces; i'm going to implement the EOM functionality RSN. Any takers for the MTCOMP command? Seems to have never been implemented.
This commit is contained in:
Joerg Wunsch
parent
0a8cb0c4a5
commit
1146dede84
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=7913
@ -91,6 +91,17 @@ Erase the tape
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(Count is ignored).
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.It Cm status
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Print status information about the tape unit.
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.It Cm blocksize
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Set the block size for the tape unit. Zero means variable-length
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blocks.
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.It Cm density
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Set the density for the tape unit. For the density codes, see below.
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.It Cm eom
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Forward space to end of recorded medium
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(Count is ignored).
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.It Cm comp
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Set compression mode.
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(Not yet implemented.)
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.El
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.Pp
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If a tape name is not specified, and the environment variable
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@ -98,11 +109,68 @@ If a tape name is not specified, and the environment variable
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does not exist;
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.Nm mt
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uses the device
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.Pa /dev/rmt12 .
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.Pa /dev/nrst0 .
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.Pp
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.Nm Mt
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returns a 0 exit status when the operation(s) were successful,
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1 if the command was unrecognized, and 2 if an operation failed.
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.Pp
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The different density codes are as follows:
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.Pp
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.Dl 0x0 default for device
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.Dl 0xE reserved for ECMA
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.Bd -literal -offset indent
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Value Tracks Density(bpi) Code Type Reference Note
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0x1 9 800 NRZI R X3.22-1983 2
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0x2 9 1600 PE R X3.39-1986 2
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0x3 9 6250 GCR R X3.54-1986 2
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0x5 4/9 8000 GCR C X3.136-1986 1
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0x6 9 3200 PE R X3.157-1987 2
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0x7 4 6400 IMFM C X3.116-1986 1
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0x8 4 8000 GCR CS X3.158-1986 1
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0x9 18 37871 GCR C X3B5/87-099 2
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0xA 22 6667 MFM C X3B5/86-199 1
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0xB 4 1600 PE C X3.56-1986 1
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0xC 24 12690 GCR C HI-TC1 1,5
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0xD 24 25380 GCR C HI-TC2 1,5
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0xF 15 10000 GCR C QIC-120 1,5
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0x10 18 10000 GCR C QIC-150 1,5
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0x11 26 16000 GCR C QIC-320(525?) 1,5
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0x12 30 51667 RLL C QIC-1350 1,5
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0x13 1 61000 DDS CS X3B5/88-185A 4
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0x14 1 43245 RLL CS X3.202-1991 4
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0x15 1 45434 RLL CS ECMA TC17 4
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0x16 48 10000 MFM C X3.193-1990 1
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0x17 48 42500 MFM C X3B5/91-174 1
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.Ed
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where Code means:
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.Bd -literal -offset indent
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NRZI Non Return to Zero, change on ones
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GCR Group Code Recording
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PE Phase Encoded
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IMFM Inverted Modified Frequency Modulation
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MFM Modified Frequency Modulation
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DDS Dat Data Storage
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RLL Run Length Encoding
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.Ed
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where Type means:
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.Bd -literal -offset indent
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R Reel-to-Reel
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C Cartridge
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CS cassette
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.Ed
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where Notes means:
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.Bd -literal -offset indent
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1 Serial Recorded
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2 Parallel Recorded
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3 Old format know as QIC-11
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4 Helical Scan
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5 Not ANSI standard, rather industry standard.
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.Ed
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.Sh ENVIRONMENT
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If the following environment variable exists, it is utilized by
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.Nm mt .
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@ -116,12 +184,16 @@ argument
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.Ar tapename
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is not given.
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.Sh FILES
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.Bl -tag -width /dev/rmt* -compact
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.It Pa /dev/rmt*
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.Bl -tag -width /dev/rwt* -compact
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.It Pa /dev/rwt*
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Raw magnetic tape interface
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.It Pa /dev/*st[0-9]*
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SCSI magnetic tape interface
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.El
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.Sh SEE ALSO
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.\".Xr mtio 4 ,
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.Xr st 4 ,
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.\".Xr wt 4 ,
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.Xr dd 1 ,
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.Xr ioctl 2 ,
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.Xr environ 7
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@ -131,5 +203,10 @@ The
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command appeared in
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.Bx 4.3 .
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.Pp
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Erase function added by Andreas Klemm <andreas@knobel.gun.de> 10/94.
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Extensions regarding the
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.Xr st 4
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driver appeared in 386BSD 0.1, and have been merged into the
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.Nm
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command in FreeBSD 2.1.
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.\" mt.1: mtio(4) missing
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.\" mt.1: wt(4) missing
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137
usr.bin/mt/mt.c
137
usr.bin/mt/mt.c
@ -55,10 +55,20 @@ static char sccsid[] = "@(#)mt.c 8.1 (Berkeley) 6/6/93";
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#include <ctype.h>
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#include <string.h>
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/* the appropriate sections of <sys/mtio.h> are also #ifdef'd for FreeBSD */
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#if defined(__FreeBSD__)
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/* c_flags */
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#define NEED_2ARGS 0x01
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#define ZERO_ALLOWED 0X02
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#endif /* defined(__FreeBSD__) */
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struct commands {
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char *c_name;
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int c_code;
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int c_ronly;
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#if defined(__FreeBSD__)
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int c_flags;
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#endif /* defined(__FreeBSD__) */
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} com[] = {
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{ "bsf", MTBSF, 1 },
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{ "bsr", MTBSR, 1 },
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@ -70,7 +80,13 @@ struct commands {
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{ "rewoffl", MTOFFL, 1 },
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{ "status", MTNOP, 1 },
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{ "weof", MTWEOF, 0 },
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{ "erase", MTERASE, 0 }, /* Andreas Klemm <andreas@knobel.gun.de */
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#if defined(__FreeBSD__)
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{ "erase", MTERASE, 0 },
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{ "blocksize", MTSETBSIZ, 0, NEED_2ARGS|ZERO_ALLOWED },
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{ "density", MTSETDNSTY, 0, NEED_2ARGS|ZERO_ALLOWED },
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{ "eom", MTEOD, 1 },
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{ "comp", MTCOMP, 0, NEED_2ARGS|ZERO_ALLOWED },
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#endif /* defined(__FreeBSD__) */
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{ NULL }
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};
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@ -78,6 +94,9 @@ void err __P((const char *, ...));
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void printreg __P((char *, u_int, char *));
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void status __P((struct mtget *));
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void usage __P((void));
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#if defined (__FreeBSD__)
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void st_status (struct mtget *);
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#endif /* defined (__FreeBSD__) */
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int
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main(argc, argv)
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@ -116,13 +135,28 @@ main(argc, argv)
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if (strncmp(p, comp->c_name, len) == 0)
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break;
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}
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#if defined(__FreeBSD__)
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if((comp->c_flags & NEED_2ARGS) && argc != 2)
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usage();
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#endif /* defined(__FreeBSD__) */
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if ((mtfd = open(tape, comp->c_ronly ? O_RDONLY : O_RDWR)) < 0)
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err("%s: %s", tape, strerror(errno));
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if (comp->c_code != MTNOP) {
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mt_com.mt_op = comp->c_code;
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if (*argv) {
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#if defined (__FreeBSD__)
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/* allow for hex numbers; useful for density */
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mt_com.mt_count = strtol(*argv, &p, 0);
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#else
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mt_com.mt_count = strtol(*argv, &p, 10);
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if (mt_com.mt_count <= 0 || *p)
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#endif /* defined(__FreeBSD__) */
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if (mt_com.mt_count <=
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#if defined (__FreeBSD__)
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((comp->c_flags & ZERO_ALLOWED)? -1: 0)
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#else
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0
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#endif /* defined (__FreeBSD__) */
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|| *p)
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err("%s: illegal count", *argv);
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}
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else
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@ -177,6 +211,19 @@ struct tape_desc {
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#ifdef tahoe
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{ MT_ISCY, "cipher", CYS_BITS, CYCW_BITS },
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#endif
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#if defined (__FreeBSD__)
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/*
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* XXX This is terrific. The st driver reports the tape drive
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* as 0x7 (MT_ISAR - Sun/Archive compatible); the wt driver
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* either reports MT_ISVIPER1 for an Archive tape, or 0x11
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* (MT_ISMFOUR) for other tapes.
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* XXX for the wt driver, rely on it behaving like a "standard"
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* magtape driver.
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*/
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{ MT_ISAR, "SCSI tape drive", 0, 0 },
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{ MT_ISVIPER1, "Archive Viper", 0, 0 },
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{ MT_ISMFOUR, "Wangtek", 0, 0 },
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#endif /* defined (__FreeBSD__) */
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{ 0 }
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};
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@ -198,10 +245,18 @@ status(bp)
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if (mt->t_type == bp->mt_type)
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break;
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}
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#if defined (__FreeBSD__)
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if(mt->t_type == MT_ISAR)
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st_status(bp);
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else {
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#endif /* defined (__FreeBSD__) */
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(void)printf("%s tape drive, residual=%d\n", mt->t_name, bp->mt_resid);
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printreg("ds", bp->mt_dsreg, mt->t_dsbits);
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printreg("\ner", bp->mt_erreg, mt->t_erbits);
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(void)putchar('\n');
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#if defined (__FreeBSD__)
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}
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#endif /* defined (__FreeBSD__) */
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}
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/*
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@ -273,3 +328,81 @@ err(fmt, va_alist)
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exit(1);
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/* NOTREACHED */
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}
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#if defined (__FreeBSD__)
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struct densities {
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int dens;
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const char *name;
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} dens [] = {
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{ 0x1, "X3.22-1983 " },
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{ 0x2, "X3.39-1986 " },
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{ 0x3, "X3.54-1986 " },
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{ 0x5, "X3.136-1986 " },
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{ 0x6, "X3.157-1987 " },
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{ 0x7, "X3.116-1986 " },
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{ 0x8, "X3.158-1986 " },
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{ 0x9, "X3B5/87-099 " },
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{ 0xA, "X3B5/86-199 " },
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{ 0xB, "X3.56-1986 " },
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{ 0xC, "HI-TC1 " },
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{ 0xD, "HI-TC2 " },
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{ 0xF, "QIC-120 " },
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{ 0x10, "QIC-150 " },
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{ 0x11, "QIC-320 " },
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{ 0x12, "QIC-1350 " },
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{ 0x13, "X3B5/88-185A" },
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{ 0x14, "X3.202-1991 " },
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{ 0x15, "ECMA TC17 " },
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{ 0x16, "X3.193-1990 " },
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{ 0x17, "X3B5/91-174 " },
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{ 0, 0 }
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};
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const char *
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getdens(int d)
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{
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static char buf[20];
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struct densities *sd;
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for (sd = dens; sd->dens; sd++)
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if (sd->dens == d)
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break;
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if (sd->dens == 0) {
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sprintf(buf, "0x%02x ", d);
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return buf;
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}
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else
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return sd->name;
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}
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const char *
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getblksiz(int bs)
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{
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static char buf[25];
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if (bs == 0)
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return "variable";
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else {
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sprintf(buf, "= %d bytes", bs);
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return buf;
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}
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}
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void
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st_status(struct mtget *bp)
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{
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printf("Present Mode: Density = %s Blocksize %s\n",
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getdens(bp->mt_density), getblksiz(bp->mt_blksiz));
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printf("---------available modes---------\n");
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printf("Mode 0: Density = %s Blocksize %s\n",
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getdens(bp->mt_density0), getblksiz(bp->mt_blksiz0));
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printf("Mode 1: Density = %s Blocksize %s\n",
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getdens(bp->mt_density1), getblksiz(bp->mt_blksiz1));
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printf("Mode 2: Density = %s Blocksize %s\n",
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getdens(bp->mt_density2), getblksiz(bp->mt_blksiz2));
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printf("Mode 3: Density = %s Blocksize %s\n",
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getdens(bp->mt_density3), getblksiz(bp->mt_blksiz3));
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}
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#endif /* defined (__FreeBSD__) */
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