/* $OpenBSD: mt.c,v 1.33 2009/11/09 06:42:59 deraadt Exp $ */ /* $NetBSD: mt.c,v 1.14.2.1 1996/05/27 15:12:11 mrg Exp $ */ /* * Copyright (c) 1980, 1993 * The Regents of the University of California. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ /* * mt -- * magnetic tape manipulation program */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "mt.h" struct commands { char *c_name; int c_code; int c_ronly; int c_mincount; } com[] = { { "blocksize", MTSETBSIZ, 1, 0 }, { "bsf", MTBSF, 1, 1 }, { "bsr", MTBSR, 1, 1 }, { "density", MTSETDNSTY, 1, 1 }, { "eof", MTWEOF, 0, 1 }, { "eom", MTEOM, 1, 1 }, { "erase", MTERASE, 0, 1 }, { "fsf", MTFSF, 1, 1 }, { "fsr", MTFSR, 1, 1 }, { "offline", MTOFFL, 1, 1 }, #define COM_EJECT 9 /* element in the above array */ { "rewind", MTREW, 1, 1 }, { "rewoffl", MTOFFL, 1, 1 }, { "status", MTNOP, 1, 1 }, { "retension", MTRETEN, 1, 1 }, #define COM_RETEN 13 /* element in the above array */ { "weof", MTWEOF, 0, 1 }, { NULL } }; void printreg(char *, u_int, char *); void status(struct mtget *); void usage(void); char *host = NULL; /* remote host (if any) */ int _rmtopendev(char *path, int oflags, int dflags, char **realpath) { #ifdef RMT if (host) return rmtopen(path, oflags); #endif return opendev(path, oflags, dflags, realpath); } int _rmtmtioctop(int fd, struct mtop *com) { #ifdef RMT if (host) return rmtioctl(com->mt_op, com->mt_count); #endif return ioctl(fd, MTIOCTOP, com); } struct mtget * _rmtstatus(int fd) { static struct mtget mt_status; #ifdef RMT if (host) return rmtstatus(); #endif if (ioctl(fd, MTIOCGET, &mt_status) < 0) err(2, "ioctl MTIOCGET"); return &mt_status; } void _rmtclose(void) { #ifdef RMT if (host) rmtclose(); #endif } char *progname; int eject = 0; int main(int argc, char *argv[]) { struct commands *comp; struct mtop mt_com; int ch, mtfd, flags, insert = 0; char *p, *tape, *realtape, *opts; size_t len; if ((progname = strrchr(argv[0], '/'))) progname++; else progname = argv[0]; if (strcmp(progname, "eject") == 0) { opts = "t"; eject = 1; tape = NULL; } else { opts = "f:"; if ((tape = getenv("TAPE")) == NULL) tape = _PATH_DEFTAPE; } while ((ch = getopt(argc, argv, opts)) != -1) { switch (ch) { case 't': insert = 1; break; case 'f': tape = optarg; break; default: usage(); } } argc -= optind; argv += optind; if (eject) { if (argc == 1) { tape = *argv++; argc--; } if (argc != 0) usage(); } else if (argc < 1 || argc > 2) usage(); if (tape == NULL) usage(); if (strchr(tape, ':')) { #ifdef RMT host = tape; tape = strchr(host, ':'); *tape++ = '\0'; if (rmthost(host) == 0) exit(X_ABORT); #else err(1, "no remote support"); #endif } if (eject) { if (insert) comp = &com[COM_RETEN]; else comp = &com[COM_EJECT]; } else { len = strlen(p = *argv++); for (comp = com;; comp++) { if (comp->c_name == NULL) errx(1, "%s: unknown command", p); if (strncmp(p, comp->c_name, len) == 0) break; } } flags = comp->c_ronly ? O_RDONLY : O_WRONLY | O_CREAT; if ((mtfd = _rmtopendev(tape, flags, OPENDEV_PART, &realtape)) < 0) { if (errno != 0) warn("%s", host ? tape : realtape); exit(2); } if (comp->c_code != MTNOP) { mt_com.mt_op = comp->c_code; if (*argv) { mt_com.mt_count = strtol(*argv, &p, 10); if (mt_com.mt_count < comp->c_mincount || *p) errx(2, "%s: illegal count", *argv); } else mt_com.mt_count = 1; if (_rmtmtioctop(mtfd, &mt_com) < 0) { if (eject) err(2, "%s", tape); else err(2, "%s: %s", tape, comp->c_name); } } else { status(_rmtstatus(mtfd)); } _rmtclose(); exit(X_FINOK); /* NOTREACHED */ } struct tape_desc { short t_type; /* type of magtape device */ char *t_name; /* printing name */ char *t_dsbits; /* "drive status" register */ char *t_erbits; /* "error" register */ } tapes[] = { #define SCSI_DS_BITS "\20\5WriteProtect\2Mounted" { 0x7, "SCSI", SCSI_DS_BITS, "76543210" }, { 0 } }; /* * Interpret the status buffer returned */ void status(struct mtget *bp) { struct tape_desc *mt; for (mt = tapes;; mt++) { if (mt->t_type == 0) { (void)printf("%d: unknown tape drive type\n", bp->mt_type); return; } if (mt->t_type == bp->mt_type) break; } (void)printf("%s tape drive, residual=%d\n", mt->t_name, bp->mt_resid); printreg("ds", bp->mt_dsreg, mt->t_dsbits); printreg("\ner", bp->mt_erreg, mt->t_erbits); (void)putchar('\n'); (void)printf("blocksize: %d (%d)\n", bp->mt_blksiz, bp->mt_mblksiz); (void)printf("density: %d (%d)\n", bp->mt_density, bp->mt_mdensity); } /* * Print a register a la the %b format of the kernel's printf. */ void printreg(char *s, u_int v, char *bits) { int i, any = 0; char c; if (bits && *bits == 8) printf("%s=%o", s, v); else printf("%s=%x", s, v); if (!bits) return; bits++; if (v && *bits) { putchar('<'); while ((i = *bits++)) { if (v & (1 << (i-1))) { if (any) putchar(','); any = 1; for (; (c = *bits) > 32; bits++) putchar(c); } else for (; *bits > 32; bits++) ; } putchar('>'); } } void usage(void) { if (eject) (void)fprintf(stderr, "usage: %s [-t] device\n", progname); else (void)fprintf(stderr, "usage: %s [-f device] command [count]\n", progname); exit(X_USAGE); }