+++ /dev/null
-/*
- * $Id: scsi-chio.c,v 1.14 2006/05/25 01:47:07 johnfranks Exp $
- *
- * scsi-chio.c -- library routines to handle the changer
- * support for chio based systems
- *
- * Author: Eric Schnoebelen, eric@cirr.com
- * based on work by: Larry Pyeatt, pyeatt@cs.colostate.edu
- * Copyright: 1997, 1998 Eric Schnoebelen
- *
- * Patch: Michael Enkelis, michaele@mxim.com)
- */
-
-#include "config.h"
-#include "amanda.h"
-
-#include <sys/types.h>
-#include <sys/ioctl.h>
-#include <sys/mtio.h>
-
-/* This include comes with Gerd Knor's SCSI media changer driver.
- * If you are porting to another system, this is the file that defines
- * ioctl calls for the changer. You will have to track it down yourself
- * and possibly change all the ioctl() calls in this program.
- */
-
-#if defined(HAVE_LINUX_CHIO_H)
-# include <linux/chio.h>
-#else
-# if defined(HAVE_CHIO_H)
-# include <chio.h>
-# else /* HAVE_SYS_CHIO_H must be defined */
-# include <sys/chio.h>
-# endif /* HAVE_CHIO_H */
-#endif /* HAVE_LINUX_CHIO_H */
-
-char *modname = "@(#)" __FILE__
- ": SCSI support library for the chio(2) interface @(#)";
-
-/*
- * cache the general changer information, for faster access elsewhere
- */
-static struct changer_params changer_info;
-static int changer_info_init = 0;
-int GetCurrentSlot(int fd, int drive);
-int GetDeviceStatus (char *tapedev);
-int OpenDevice (char *tapedev);
-int CloseDevice (char *device, int DeviceFD);
-int Tape_Ready1 ( char *tapedev , int wait);
-int isempty(int fd, int slot);
-int find_empty(int fd, int start, int count);
-int get_clean_state(char *tapedev);
-int get_slot_count(int fd);
-int get_drive_count(int fd);
-int eject_tape(char *tapedev);
-int drive_loaded(int fd, int drivenum);
-int unload(int fd, int drive, int slot);
-int load(int fd, int drive, int slot);
-
-static int get_changer_info(int fd)
-{
-int rc = 0;
-
- if ( !changer_info_init ) {
- rc = ioctl(fd, CHIOGPARAMS, &changer_info);
- changer_info_init++;
- }
- return (rc);
-}
-
-/* Get the number of the first free slot
- * return > 0 number of empty slot
- * return = 0 no slot free
- * return < 0 error
- */
-int GetCurrentSlot(int fd, int drive)
-{
- struct changer_element_status ces;
- int slot;
- int i, rc;
-
- (void)drive;
-
- get_changer_info(fd);
-
- ces.ces_type = CHET_ST;
- ces.ces_data = malloc(changer_info.cp_nslots);
-
- rc = ioctl(fd, CHIOGSTATUS, &ces);
- if (rc) {
- dbprintf(_("changer status query failed: 0x%x %s\n"), rc, strerror(errno));
- return -1;
- }
- for (slot = 0; slot < changer_info.cp_nslots; slot++)
- {
- i = ces.ces_data[slot] & CESTATUS_FULL;
- dbprintf(_("\tGetCurrentSlot slot %d = %d\n"), slot, i);
- if (!i)
- return(slot);
- }
- return -1;
-}
-
-int get_clean_state(char *tapedev)
-{
-int rc;
-#if defined(BUILTIN)
- rc = 0;
-#else
-#define GMT_CLN(x) ((x) & 0x00008000)
- rc = ( GMT_CLN(GetDeviceStatus(tapedev)) );
-#endif /* BUILTIN */
- return rc;
-}
-
-int eject_tape(char *tapedev)
-/* This function ejects the tape from the drive */
-{
-int mtfd;
-struct mtop mt_com;
-
- if ( (mtfd = OpenDevice(tapedev) ) < 0) {
- dbprintf(_("eject_tape : failed\n"));
- perror(tapedev);
- exit(2);
- }
- mt_com.mt_op = MTOFFL;
- mt_com.mt_count = 1;
- if (ioctl(mtfd, MTIOCTOP, (char *)&mt_com) < 0) {
-/*
- If the drive already ejected the tape due an error, or because it
- was a cleaning tape, threre can be an error, which we should ignore
-
- perror(tapedev);
- exit(2);
-*/
- }
- return(CloseDevice(tapedev, mtfd));
-}
-
-
-/*
- * this routine checks a specified slot to see if it is empty
- */
-int isempty(int fd, int slot)
-{
-struct changer_element_status ces;
-int i,rc;
-int type=CHET_ST;
-
- get_changer_info(fd);
-
- ces.ces_type = type;
- ces.ces_data = malloc(changer_info.cp_nslots);
-
- rc = ioctl(fd, CHIOGSTATUS, &ces);
- if (rc) {
- dbprintf(_("changer status query failed: 0x%x %s\n"), rc,strerror(errno));
- return -1;
- }
-
- i = ces.ces_data[slot] & CESTATUS_FULL;
-
- free(ces.ces_data);
- return !i;
-}
-
-/*
- * find the first empty slot
- */
-int find_empty(int fd, int start, int count)
-{
-struct changer_element_status ces;
-int i,rc;
-int type=CHET_ST;
-
- (void)start;
- (void)count;
-
- get_changer_info(fd);
-
- ces.ces_type = type;
- ces.ces_data = malloc(changer_info.cp_nslots);
-
- rc = ioctl(fd,CHIOGSTATUS,&ces);
- if (rc) {
- dbprintf(_("changer status query failed: 0x%x %s\n"), rc, strerror(errno));
- return -1;
- }
-
- i = 0;
- while ((i < changer_info.cp_nslots)&&(ces.ces_data[i] & CESTATUS_FULL))
- i++;
- free(ces.ces_data);
- return i;
-}
-
-/*
- * returns one if there is a tape loaded in the drive
- */
-int drive_loaded(int fd, int drivenum)
-{
-struct changer_element_status ces;
-int i,rc;
-int type=CHET_DT;
-
- get_changer_info(fd);
-
- ces.ces_type = type;
- ces.ces_data = malloc(changer_info.cp_ndrives);
-
- rc = ioctl(fd, CHIOGSTATUS, &ces);
- if (rc) {
- dbprintf(_("drive status query failed: 0x%x %s\n"), rc, strerror(errno));
- return -1;
- }
-
- i = (ces.ces_data[drivenum] & CESTATUS_FULL);
-
- free(ces.ces_data);
- return i;
-}
-
-
-/*
- * unloads the drive, putting the tape in the specified slot
- */
-int unload(int fd, int drive, int slot)
-{
-struct changer_move move;
-int rc;
-
- dbprintf(_("unload : fd = %d, drive = %d, slot =%d\n"),fd, drive, slot);
-
- move.cm_fromtype = CHET_DT;
- move.cm_fromunit = drive;
- move.cm_totype = CHET_ST;
- move.cm_tounit = slot;
- move.cm_flags = 0;
-
- rc = ioctl(fd, CHIOMOVE, &move);
- if (rc){
- dbprintf(_("drive unload failed (MOVE): 0x%x %s\n"), rc, strerror(errno));
- return(-2);
- }
- return 0;
-}
-
-
-/*
- * moves tape from the specified slot into the drive
- */
-int load(int fd, int drive, int slot)
-{
-struct changer_move move;
-int rc;
-
- dbprintf(_("load : fd = %d, drive = %d, slot =%d\n"),fd, drive, slot);
-
- move.cm_fromtype = CHET_ST;
- move.cm_fromunit = slot;
- move.cm_totype = CHET_DT;
- move.cm_tounit = drive;
- move.cm_flags = 0;
-
- rc = ioctl(fd,CHIOMOVE,&move);
- if (rc){
- dbprintf(_("drive load failed (MOVE): 0x%x %s\n"), rc, strerror(errno));
- return(-2);
- }
- return(0);
-}
-
-int get_slot_count(int fd)
-{
-int rc;
-
- rc = get_changer_info(fd);
- if (rc) {
- dbprintf(_("slot count query failed: 0x%x %s\n"), rc, strerror(errno));
- return -1;
- }
-
- return changer_info.cp_nslots;
-}
-
-int get_drive_count(int fd)
-{
-int rc;
-
- rc = get_changer_info(fd);
- if (rc) {
- dbprintf(_("drive count query failed: 0x%x %s\n"), rc, strerror(errno));
- return -1;
- }
-
- return changer_info.cp_ndrives;
-}
-
-/* This function should ask the drive if it is ready */
-int Tape_Ready1 ( char *tapedev , int wait)
-#if defined(BUILTIN)
-{
- FILE *out=NULL;
- int cnt=0;
-
- while ((cnt < wait) && (NULL==(out=fopen(tapedev,"w+")))){
- cnt++;
- sleep(1);
- }
- if (out != NULL)
- fclose(out);
- return 0;
-}
-
-#else
-{
- int cnt=0;
-
- dbprintf(_("Tape_Ready1 : wait for BOT : max %d seconds\n"),wait);
- /* loop on status BOT */
- while ((cnt < wait)) {
- if ( GMT_BOT(GetDeviceStatus(tapedev)) ) {
- break;
- }
- /* dbprintf(("Tape_Ready1 : cnt %d\n",cnt)); */
- cnt++;
- sleep(1);
- }
- if (cnt >= wait) {
- dbprintf(_("Tape_Ready1 : BOT not found : %d seconds\n"),cnt);
- return(-1);
- } else {
- dbprintf(_("Tape_Ready1 : BOT : %d seconds\n"),cnt);
- return 0;
- }
-}
-#endif /* BUILTIN */
-
-int GetDeviceStatus (char *tapedev)
-{
- struct mtget status;
- int mtfd, rc;
-
- mtfd = OpenDevice(tapedev);
- ioctl (mtfd, MTIOCGET, (char *)&status);
- CloseDevice(tapedev, mtfd);
- rc = status.mt_gstat;
- return rc;
-}
-
-int OpenDevice (char *tapedev)
-{
- int DeviceFD;
-
- DeviceFD = open(tapedev, O_RDWR);
- return DeviceFD;
-}
-
-int CloseDevice (char *device, int DeviceFD)
-{
- int rc;
-
- dbprintf(_("CloseDevice(%s)\n"), device);
- rc = close(DeviceFD);
-
- return rc;
-}
-
-/*
- * Local variables:
- * indent-tabs-mode: nil
- * c-default-style: gnu
- * End:
- */
projects / debian / amanda / blobdiff