X-Git-Url: https://git.sur5r.net/?a=blobdiff_plain;f=bacula%2Fsrc%2Fstored%2Fdevice.c;h=7d5a9af81bf2e4ebace9dd2583ec056ebd96a9dd;hb=dc43fa5c6823b93c4206888e3bf639982af4563b;hp=46ffd38ace86113d2eeb606a7ca8b148090e0b0f;hpb=40432ed8ae67601ac81fb74c7eb5a153cb2f8ad9;p=bacula%2Fbacula

diff --git a/bacula/src/stored/device.c b/bacula/src/stored/device.c
index 46ffd38ace..7d5a9af81b 100644
--- a/bacula/src/stored/device.c
+++ b/bacula/src/stored/device.c
@@ -29,7 +29,7 @@
  *   Version $Id$
  */
 /*
-   Copyright (C) 2000-2003 Kern Sibbald and John Walker
+   Copyright (C) 2000-2004 Kern Sibbald and John Walker
 
    This program is free software; you can redistribute it and/or
    modify it under the terms of the GNU General Public License as
@@ -62,33 +62,36 @@ extern int debug_level;
  * Attempt to "recover" by obtaining a new Volume.
  *
  * Here are a few things to know:
- *  jcr->VolCatInfo contains the info on the "current" tape for this job.
+ *  dcr->VolCatInfo contains the info on the "current" tape for this job.
  *  dev->VolCatInfo contains the info on the tape in the drive.
  *    The tape in the drive could have changed several times since 
  *    the last time the job used it (jcr->VolCatInfo).
- *  jcr->VolumeName is the name of the current/desired tape in the drive.
+ *  dcr->VolumeName is the name of the current/desired tape in the drive.
  *
  * We enter with device locked, and 
  *     exit with device locked.
  *
  * Note, we are called only from one place in block.c
  *
- *  Returns: 1 on success
- *	     0 on failure
+ *  Returns: true  on success
+ *	     false on failure
  */
-int fixup_device_block_write_error(JCR *jcr, DEVICE *dev, DEV_BLOCK *block)
+bool fixup_device_block_write_error(DCR *dcr)
 {
-   uint32_t stat = 0;			
+   uint32_t stat;
    char PrevVolName[MAX_NAME_LENGTH];
    DEV_BLOCK *label_blk;
+   DEV_BLOCK *block = dcr->block;
    char b1[30], b2[30];
    time_t wait_time;
    char dt[MAX_TIME_LENGTH];
+   JCR *jcr = dcr->jcr;
+   DEVICE *dev = dcr->dev;
 
    wait_time = time(NULL);
-   status_dev(dev, &stat);
+   stat = status_dev(dev);
    if (!(stat & BMT_EOD)) {
-      return 0;                       /* this really shouldn't happen */
+      return false;                    /* this really shouldn't happen */
    }
 
    Dmsg0(100, "======= Got EOD ========\n");
@@ -98,12 +101,12 @@ int fixup_device_block_write_error(JCR *jcr, DEVICE *dev, DEV_BLOCK *block)
    unlock_device(dev);
 
    /* Create a jobmedia record for this job */
-   if (!dir_create_jobmedia_record(jcr)) {
+   if (!dir_create_jobmedia_record(dcr)) {
        Jmsg(jcr, M_ERROR, 0, _("Could not create JobMedia record for Volume=\"%s\" Job=%s\n"),
-	    jcr->VolCatInfo.VolCatName, jcr->Job);
+	    dcr->VolCatInfo.VolCatName, jcr->Job);
        P(dev->mutex);
        unblock_device(dev);
-       return 0;
+       return false;
    }
 
    bstrncpy(dev->VolCatInfo.VolCatStatus, "Full", sizeof(dev->VolCatInfo.VolCatStatus));
@@ -111,10 +114,10 @@ int fixup_device_block_write_error(JCR *jcr, DEVICE *dev, DEV_BLOCK *block)
       dev->VolCatInfo.VolCatStatus, dev->VolCatInfo.VolCatName);
    dev->VolCatInfo.VolCatFiles = dev->file;   /* set number of files */
    dev->VolCatInfo.VolCatJobs++;	      /* increment number of jobs */
-   if (!dir_update_volume_info(jcr, dev, 0)) {	  /* send Volume info to Director */
+   if (!dir_update_volume_info(dcr, false)) {	 /* send Volume info to Director */
       P(dev->mutex);
       unblock_device(dev);
-      return 0; 		   /* device locked */
+      return false;		   /* device locked */
    }
    Dmsg0(100, "Back from update_vol_info\n");
 
@@ -122,6 +125,7 @@ int fixup_device_block_write_error(JCR *jcr, DEVICE *dev, DEV_BLOCK *block)
    bstrncpy(dev->VolHdr.PrevVolName, PrevVolName, sizeof(dev->VolHdr.PrevVolName));
 
    label_blk = new_block(dev);
+   dcr->block = label_blk;
 
    /* Inform User about end of medium */
    Jmsg(jcr, M_INFO, 0, _("End of medium on Volume \"%s\" Bytes=%s Blocks=%s at %s.\n"), 
@@ -129,16 +133,17 @@ int fixup_device_block_write_error(JCR *jcr, DEVICE *dev, DEV_BLOCK *block)
 	edit_uint64_with_commas(dev->VolCatInfo.VolCatBlocks, b2),
 	bstrftime(dt, sizeof(dt), time(NULL)));
 
-   if (!mount_next_write_volume(jcr, dev, label_blk, 1)) {
+   if (!mount_next_write_volume(dcr, 1)) {
       free_block(label_blk);
+      dcr->block = block;
       P(dev->mutex);
       unblock_device(dev);
-      return 0; 		   /* device locked */
+      return false;		   /* device locked */
    }
    P(dev->mutex);		   /* lock again */
 
    Jmsg(jcr, M_INFO, 0, _("New volume \"%s\" mounted on device %s at %s.\n"),
-      jcr->VolumeName, dev_name(dev), bstrftime(dt, sizeof(dt), time(NULL)));
+      dcr->VolumeName, dev_name(dev), bstrftime(dt, sizeof(dt), time(NULL)));
 
    /* 
     * If this is a new tape, the label_blk will contain the
@@ -147,46 +152,51 @@ int fixup_device_block_write_error(JCR *jcr, DEVICE *dev, DEV_BLOCK *block)
     *  empty label_blk, and nothing will be written.
     */
    Dmsg0(190, "write label block to dev\n");
-   if (!write_block_to_dev(jcr, dev, label_blk)) {
+   if (!write_block_to_dev(dcr)) {
       Pmsg1(0, "write_block_to_device Volume label failed. ERR=%s",
 	strerror_dev(dev));
       free_block(label_blk);
+      dcr->block = block;
       unblock_device(dev);
-      return 0; 		   /* device locked */
+      return false;		   /* device locked */
    }
    free_block(label_blk);
+   dcr->block = block;
 
    /* 
     * Walk through all attached jcrs indicating the volume has changed	 
     */
    Dmsg1(100, "Walk attached jcrs. Volume=%s\n", dev->VolCatInfo.VolCatName);
-   for (JCR *mjcr=NULL; (mjcr=next_attached_jcr(dev, mjcr)); ) {
+// for (JCR *mjcr=NULL; (mjcr=next_attached_jcr(dev, mjcr)); ) {
+   DCR *mdcr;
+   foreach_dlist(mdcr, dev->attached_dcrs) {
+      JCR *mjcr = mdcr->jcr;
       if (mjcr->JobId == 0) {
 	 continue;		   /* ignore console */
       }
-      mjcr->NewVol = true;
+      mdcr->NewVol = true;
       if (jcr != mjcr) {
-	 pm_strcpy(&mjcr->VolumeName, jcr->VolumeName);  /* get a copy of the new volume */
+	 bstrncpy(mdcr->VolumeName, dcr->VolumeName, sizeof(mdcr->VolumeName));
       }
    }
 
    /* Clear NewVol now because dir_get_volume_info() already done */
-   jcr->NewVol = false;
-   set_new_volume_parameters(jcr, dev);
+   jcr->dcr->NewVol = false;
+   set_new_volume_parameters(dcr);
 
    jcr->run_time += time(NULL) - wait_time; /* correct run time for mount wait */
 
    /* Write overflow block to device */
    Dmsg0(190, "Write overflow block to dev\n");
-   if (!write_block_to_dev(jcr, dev, block)) {
+   if (!write_block_to_dev(dcr)) {
       Pmsg1(0, "write_block_to_device overflow block failed. ERR=%s",
 	strerror_dev(dev));
       unblock_device(dev);
-      return 0; 		   /* device locked */
+      return false;		   /* device locked */
    }
 
    unblock_device(dev);
-   return 1;				    /* device locked */
+   return true; 			    /* device locked */
 }
 
 /*
@@ -194,25 +204,27 @@ int fixup_device_block_write_error(JCR *jcr, DEVICE *dev, DEV_BLOCK *block)
  *  concerning this job.  The global changes were made earlier
  *  in the dev structure.
  */
-void set_new_volume_parameters(JCR *jcr, DEVICE *dev) 
+void set_new_volume_parameters(DCR *dcr)
 {
-   if (jcr->NewVol && !dir_get_volume_info(jcr, GET_VOL_INFO_FOR_WRITE)) {
+   JCR *jcr = dcr->jcr;
+   DEVICE *dev = dcr->dev;
+   if (dcr->NewVol && !dir_get_volume_info(dcr, GET_VOL_INFO_FOR_WRITE)) {
       Jmsg1(jcr, M_ERROR, 0, "%s", jcr->errmsg);
    }
    /* Set new start/end positions */
    if (dev_state(dev, ST_TAPE)) {
-      jcr->StartBlock = dev->block_num;
-      jcr->StartFile = dev->file;
+      dcr->StartBlock = dev->block_num;
+      dcr->StartFile = dev->file;
    } else {
-      jcr->StartBlock = (uint32_t)dev->file_addr;
-      jcr->StartFile  = (uint32_t)(dev->file_addr >> 32);
+      dcr->StartBlock = (uint32_t)dev->file_addr;
+      dcr->StartFile  = (uint32_t)(dev->file_addr >> 32);
    }
    /* Reset indicies */
-   jcr->VolFirstIndex = 0;
-   jcr->VolLastIndex = 0;
+   dcr->VolFirstIndex = 0;
+   dcr->VolLastIndex = 0;
    jcr->NumVolumes++;
-   jcr->NewVol = false;
-   jcr->WroteVol = false;
+   dcr->NewVol = false;
+   dcr->WroteVol = false;
 }
 
 /*
@@ -220,27 +232,29 @@ void set_new_volume_parameters(JCR *jcr, DEVICE *dev)
  *  concerning this job.  The global changes were made earlier
  *  in the dev structure.
  */
-void set_new_file_parameters(JCR *jcr, DEVICE *dev) 
+void set_new_file_parameters(DCR *dcr)
 {
+   DEVICE *dev = dcr->dev;
+    
    /* Set new start/end positions */
    if (dev_state(dev, ST_TAPE)) {
-      jcr->StartBlock = dev->block_num;
-      jcr->StartFile = dev->file;
+      dcr->StartBlock = dev->block_num;
+      dcr->StartFile = dev->file;
    } else {
-      jcr->StartBlock = (uint32_t)dev->file_addr;
-      jcr->StartFile  = (uint32_t)(dev->file_addr >> 32);
+      dcr->StartBlock = (uint32_t)dev->file_addr;
+      dcr->StartFile  = (uint32_t)(dev->file_addr >> 32);
    }
    /* Reset indicies */
-   jcr->VolFirstIndex = 0;
-   jcr->VolLastIndex = 0;
-   jcr->NewFile = false;
-   jcr->WroteVol = false;
+   dcr->VolFirstIndex = 0;
+   dcr->VolLastIndex = 0;
+   dcr->NewFile = false;
+   dcr->WroteVol = false;
 }
 
 
 
 /*
- *   Open the device. Expect dev to already be initialized.  
+ *   First Open of the device. Expect dev to already be initialized.  
  *
  *   This routine is used only when the Storage daemon starts 
  *   and always_open is set, and in the stand-alone utility
@@ -250,14 +264,14 @@ void set_new_file_parameters(JCR *jcr, DEVICE *dev)
  *    that we can get the filename; the device_name for
  *    a file is the directory only. 
  *
- *   Retuns: 0 on failure
- *	     1 on success
+ *   Returns: false on failure
+ *	      true  on success
  */
-int open_device(DEVICE *dev)
+bool first_open_device(DEVICE *dev)
 {
    Dmsg0(120, "start open_output_device()\n");
    if (!dev) {
-      return 0;
+      return false;
    }
 
    lock_device(dev);
@@ -266,21 +280,69 @@ int open_device(DEVICE *dev)
    if (!dev_is_tape(dev)) {
       Dmsg0(129, "Device is file, deferring open.\n");
       unlock_device(dev);
-      return 1;
+      return true;
    }
 
    if (!(dev->state & ST_OPENED)) {
+       int mode;
+       if (dev_cap(dev, CAP_STREAM)) {
+	  mode = OPEN_WRITE_ONLY;
+       } else {
+	  mode = OPEN_READ_WRITE;
+       }
       Dmsg0(129, "Opening device.\n");
-      if (open_dev(dev, NULL, READ_WRITE) < 0) {
+      if (open_dev(dev, NULL, mode) < 0) {
          Emsg1(M_FATAL, 0, _("dev open failed: %s\n"), dev->errmsg);
 	 unlock_device(dev);
-	 return 0;
+	 return false;
       }
    }
    Dmsg1(129, "open_dev %s OK\n", dev_name(dev));
 
    unlock_device(dev);
-   return 1;
+   return true;
+}
+
+/* 
+ * Make sure device is open, if not do so 
+ */
+bool open_device(DCR *dcr)
+{
+   DEVICE *dev = dcr->dev;
+   /* Open device */
+   if  (!(dev_state(dev, ST_OPENED))) {
+       int mode;
+       if (dev_cap(dev, CAP_STREAM)) {
+	  mode = OPEN_WRITE_ONLY;
+       } else {
+	  mode = OPEN_READ_WRITE;
+       }
+       if (open_dev(dev, dcr->VolCatInfo.VolCatName, mode) < 0) {
+	  /* If polling, ignore the error */
+	  if (!dev->poll) {
+             Jmsg2(dcr->jcr, M_FATAL, 0, _("Unable to open device %s. ERR=%s\n"), 
+		dev_name(dev), strerror_dev(dev));
+	  }
+	  return false;
+       }
+   }
+   return true;
+}
+
+void dev_lock(DEVICE *dev)
+{
+   int errstat;
+   if ((errstat=rwl_writelock(&dev->lock))) {
+      Emsg1(M_ABORT, 0, "Device write lock failure. ERR=%s\n", strerror(errstat));
+   }
+}
+
+void dev_unlock(DEVICE *dev)
+{
+   int errstat;
+   if ((errstat=rwl_writeunlock(&dev->lock))) {
+      Emsg1(M_ABORT, 0, "Device write unlock failure. ERR=%s\n", strerror(errstat));
+   }
 }
 
 /* 
@@ -288,10 +350,10 @@ int open_device(DEVICE *dev)
  * must wait. The no_wait_id thread is out obtaining a new volume
  * and preparing the label.
  */
-void _lock_device(char *file, int line, DEVICE *dev)
+void _lock_device(const char *file, int line, DEVICE *dev)
 {
    int stat;
-   Dmsg3(100, "lock %d from %s:%d\n", dev->dev_blocked, file, line);
+   Dmsg3(500, "lock %d from %s:%d\n", dev->dev_blocked, file, line);
    P(dev->mutex);
    if (dev->dev_blocked && !pthread_equal(dev->no_wait_id, pthread_self())) {
       dev->num_waiting++;	      /* indicate that I am waiting */
@@ -309,19 +371,40 @@ void _lock_device(char *file, int line, DEVICE *dev)
 /*
  * Check if the device is blocked or not
  */
-int device_is_unmounted(DEVICE *dev)
+bool device_is_unmounted(DEVICE *dev)
 {
-   int stat;
-   P(dev->mutex);
-   stat = (dev->dev_blocked == BST_UNMOUNTED) ||
-	  (dev->dev_blocked == BST_UNMOUNTED_WAITING_FOR_SYSOP);
-   V(dev->mutex);
+   bool stat;
+   int blocked = dev->dev_blocked;
+   stat = (blocked == BST_UNMOUNTED) ||
+	  (blocked == BST_UNMOUNTED_WAITING_FOR_SYSOP);
    return stat;
 }
 
-void _unlock_device(char *file, int line, DEVICE *dev) 
+const char *edit_blocked_reason(DEVICE *dev)
 {
-   Dmsg2(100, "unlock from %s:%d\n", file, line);
+   switch (dev->dev_blocked) {
+   case BST_NOT_BLOCKED:
+      return "not blocked";
+   case BST_UNMOUNTED:
+      return "user unmounted device";
+   case BST_WAITING_FOR_SYSOP:
+      return "waiting for operator action";      
+   case BST_DOING_ACQUIRE:
+      return "opening, validating, or positioning tape";
+   case BST_WRITING_LABEL:
+      return "labeling tape";
+   case BST_UNMOUNTED_WAITING_FOR_SYSOP:
+      return "closed by user during mount request";
+   case BST_MOUNT:
+      return "mount request";
+   default:
+      return "unknown blocked code";
+   }
+}
+
+void _unlock_device(const char *file, int line, DEVICE *dev) 
+{
+   Dmsg2(500, "unlock from %s:%d\n", file, line);
    V(dev->mutex);
 }
 
@@ -333,9 +416,9 @@ void _unlock_device(char *file, int line, DEVICE *dev)
  *  the current thread can do slip through the lock_device()
  *  calls without blocking.
  */
-void _block_device(char *file, int line, DEVICE *dev, int state)
+void _block_device(const char *file, int line, DEVICE *dev, int state)
 {
-   Dmsg3(100, "block set %d from %s:%d\n", state, file, line);
+   Dmsg3(500, "block set %d from %s:%d\n", state, file, line);
    ASSERT(dev->dev_blocked == BST_NOT_BLOCKED);
    dev->dev_blocked = state;	      /* make other threads wait */
    dev->no_wait_id = pthread_self();  /* allow us to continue */
@@ -346,9 +429,9 @@ void _block_device(char *file, int line, DEVICE *dev, int state)
 /*
  * Unblock the device, and wake up anyone who went to sleep.
  */
-void _unblock_device(char *file, int line, DEVICE *dev)
+void _unblock_device(const char *file, int line, DEVICE *dev)
 {
-   Dmsg3(100, "unblock %d from %s:%d\n", dev->dev_blocked, file, line);
+   Dmsg3(500, "unblock %d from %s:%d\n", dev->dev_blocked, file, line);
    ASSERT(dev->dev_blocked);
    dev->dev_blocked = BST_NOT_BLOCKED;
    dev->no_wait_id = 0;
@@ -361,9 +444,9 @@ void _unblock_device(char *file, int line, DEVICE *dev)
  * Enter with device locked and blocked
  * Exit with device unlocked and blocked by us.
  */
-void _steal_device_lock(char *file, int line, DEVICE *dev, bsteal_lock_t *hold, int state)
+void _steal_device_lock(const char *file, int line, DEVICE *dev, bsteal_lock_t *hold, int state)
 {
-   Dmsg4(100, "steal lock. old=%d new=%d from %s:%d\n", dev->dev_blocked, state,
+   Dmsg4(500, "steal lock. old=%d new=%d from %s:%d\n", dev->dev_blocked, state,
       file, line);
    hold->dev_blocked = dev->dev_blocked;
    hold->dev_prev_blocked = dev->dev_prev_blocked;
@@ -377,12 +460,15 @@ void _steal_device_lock(char *file, int line, DEVICE *dev, bsteal_lock_t *hold,
  * Enter with device blocked by us but not locked
  * Exit with device locked, and blocked by previous owner 
  */
-void _give_back_device_lock(char *file, int line, DEVICE *dev, bsteal_lock_t *hold)	      
+void _give_back_device_lock(const char *file, int line, DEVICE *dev, bsteal_lock_t *hold)	      
 {
-   Dmsg4(100, "return lock. old=%d new=%d from %s:%d\n", 
+   Dmsg4(500, "return lock. old=%d new=%d from %s:%d\n", 
       dev->dev_blocked, hold->dev_blocked, file, line);
    P(dev->mutex);
    dev->dev_blocked = hold->dev_blocked;
    dev->dev_prev_blocked = hold->dev_prev_blocked;
    dev->no_wait_id = hold->no_wait_id;
+   if (dev->dev_blocked == BST_NOT_BLOCKED && dev->num_waiting > 0) {
+      pthread_cond_broadcast(&dev->wait); /* wake them up */
+   }
 }