/* mt -- control magnetic tape drive operation Copyright (C) 1991, 1992, 1995, 2001 Free Software Foundation, Inc. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* If -f is not given, the environment variable TAPE is used; if that is not set, a default device defined in sys/mtio.h is used. The device must be either a character special file or a remote tape drive with the form "[user@]system:path". The default count is 1. Some operations ignore it. Exit status: 0 success 1 invalid operation or device name 2 operation failed Operations (unique abbreviations are accepted): eof, weof Write COUNT EOF marks at current position on tape. fsf Forward space COUNT files. Tape is positioned on the first block of the file. bsf Backward space COUNT files. Tape is positioned on the first block of the file. fsr Forward space COUNT records. bsr Backward space COUNT records. bsfm Backward space COUNT file marks. Tape is positioned on the beginning-of-the-tape side of the file mark. asf Absolute space to file number COUNT. Equivalent to rewind followed by fsf COUNT. eom Space to the end of the recorded media on the tape (for appending files onto tapes). rewind Rewind the tape. offline, rewoffl Rewind the tape and, if applicable, unload the tape. status Print status information about the tape unit. retension Rewind the tape, then wind it to the end of the reel, then rewind it again. erase Erase the tape. David MacKenzie */ #include #include #include #include #include #ifdef HAVE_SYS_MTIO_H # ifdef HAVE_SYS_IO_TRIOCTL_H # include # endif # include #endif #include #include #include #include #include #ifdef HAVE_LOCALE_H # include #endif #include #if defined(HAVE_UNISTD_H) #include #endif #include #if defined(HAVE_STRING_H) || defined(STDC_HEADERS) #include #else #include #endif #if defined(HAVE_STDLIB_H) # include #endif #if !HAVE_DECL_ERRNO extern int errno; #endif #if !HAVE_DECL_GETENV char *getenv (); #endif #if !HAVE_DECL_ATOI int atoi (); #endif #if !HAVE_DECL_EXIT void exit (); #endif char *opnames[] = { "eof", "weof", "fsf", "bsf", "fsr", "bsr", "rewind", "offline", "rewoffl", "eject", "status", #ifdef MTBSFM "bsfm", #endif #ifdef MTEOM "eom", #endif #ifdef MTRETEN "retension", #endif #ifdef MTERASE "erase", #endif "asf", #ifdef MTFSFM "fsfm", #endif #ifdef MTSEEK "seek", #endif NULL }; #define MTASF 600 /* Random unused number. */ short operations[] = { MTWEOF, MTWEOF, MTFSF, MTBSF, MTFSR, MTBSR, MTREW, MTOFFL, MTOFFL, MTOFFL, MTNOP, #ifdef MTBSFM MTBSFM, #endif #ifdef MTEOM MTEOM, #endif #ifdef MTRETEN MTRETEN, #endif #ifdef MTERASE MTERASE, #endif MTASF, #ifdef MTFSFM MTFSFM, #endif #ifdef MTSEEK MTSEEK, #endif 0 }; struct option longopts[] = { {"file", 1, NULL, 'f'}, {"rsh-command", 1, NULL, 1}, {"version", 0, NULL, 'V'}, {"help", 0, NULL, 'H'}, {NULL, 0, NULL, 0} }; /* The name this program was run with. */ char *program_name; void check_type (char *dev, int desc) { struct stat stats; if (_isrmt (desc)) return; if (fstat (desc, &stats) == -1) stat_error (dev); if ((stats.st_mode & S_IFMT) != S_IFCHR) error (1, 0, _("%s is not a character special file"), dev); } void perform_operation (char *dev, int desc, short op, int count) { struct mtop control; control.mt_op = op; control.mt_count = count; /* Debian hack: The rmtioctl function returns -1 in case of an error, not 0. This bug has been reported to "bug-gnu-utils@prep.ai.mit.edu". (96/7/10) -BEM */ if (rmtioctl (desc, MTIOCTOP, (char*)&control) == -1) error (2, errno, _("%s: rmtioctl failed"), dev); } void print_status (char *dev, int desc) { struct mtget status; if (rmtioctl (desc, MTIOCGET, (char*)&status) == -1) error (2, errno, _("%s: rmtioctl failed"), dev); printf ("drive type = %d\n", (int) status.mt_type); #if defined(hpux) || defined(__hpux) printf ("drive status (high) = %d\n", (int) status.mt_dsreg1); printf ("drive status (low) = %d\n", (int) status.mt_dsreg2); #else printf ("drive status = %d\n", (int) status.mt_dsreg); #endif printf ("sense key error = %d\n", (int) status.mt_erreg); printf ("residue count = %d\n", (int) status.mt_resid); #if !defined(ultrix) && !defined(__ultrix__) && !defined(hpux) && !defined(__hpux) && !defined(__osf__) printf ("file number = %d\n", (int) status.mt_fileno); printf ("block number = %d\n", (int) status.mt_blkno); #endif } void usage (FILE *fp,int status) { fprintf (fp, _("\ Usage: %s [-V] [-f device] [--file=device] [--rsh-command=command]\n\ \t[--help] [--version] operation [count]\n"), program_name); exit (status); } int main (int argc, char **argv) { short operation; int count; char *tapedev; int tapedesc; int i; char *rsh_command_option = NULL; setlocale (LC_ALL, ""); bindtextdomain (PACKAGE, LOCALEDIR); textdomain (PACKAGE); program_name = argv[0]; tapedev = NULL; count = 1; /* Debian hack: Fixed a bug in the -V flag. This bug has been reported to "bug-gnu-utils@prep.ai.mit.edu". -BEM */ while ((i = getopt_long (argc, argv, "f:t:VH", longopts, (int *) 0)) != -1) { switch (i) { case 'f': case 't': tapedev = optarg; break; case 1: rsh_command_option = optarg; break; case 'V': printf ("mt (%s)\n", PACKAGE_STRING); exit (0); break; case 'H': default: usage (stdout, 0); } } if (optind == argc) usage (stderr, 1); i = argmatch (argv[optind], opnames); if (i < 0) { argmatch_invalid ("tape operation", argv[optind], i); exit (1); } operation = operations[i]; if (++optind < argc) /* Debian hack: Replaced the atoi function call with strtol so that hexidecimal values can be used for the count parameter. This bug has been reported to "bug-gnu-utils@prep.ai.mit.edu". (97/12/5) -BEM */ #if defined(STDC_HEADERS) count = (int) strtol (argv[optind], NULL, 0); #else count = atoi (argv[optind]); #endif if (++optind < argc) usage (stderr, 1); if (tapedev == NULL) { tapedev = getenv ("TAPE"); if (tapedev == NULL) #ifdef DEFTAPE /* From sys/mtio.h. */ tapedev = DEFTAPE; #else error (1, 0, _("no tape device specified")); #endif } if ( (operation == MTWEOF) #ifdef MTERASE || (operation == MTERASE) #endif ) tapedesc = rmtopen (tapedev, O_WRONLY, 0, rsh_command_option); else tapedesc = rmtopen (tapedev, O_RDONLY, 0, rsh_command_option); if (tapedesc == -1) error (1, errno, _("%s: rmtopen failed"), tapedev); check_type (tapedev, tapedesc); if (operation == MTASF) { perform_operation (tapedev, tapedesc, MTREW, 1); operation = MTFSF; } perform_operation (tapedev, tapedesc, operation, count); if (operation == MTNOP) print_status (tapedev, tapedesc); if (rmtclose (tapedesc) == -1) error (2, errno, _("%s: rmtclose failed"), tapedev); exit (0); }