+/*
+ Bacula® - The Network Backup Solution
+
+ Copyright (C) 2000-2012 Free Software Foundation Europe e.V.
+
+ The main author of Bacula is Kern Sibbald, with contributions from
+ many others, a complete list can be found in the file AUTHORS.
+ This program is Free Software; you can redistribute it and/or
+ modify it under the terms of version three of the GNU Affero General Public
+ License as published by the Free Software Foundation and included
+ in the file LICENSE.
+
+ 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 Affero 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.
+
+ Bacula® is a registered trademark of Kern Sibbald.
+ The licensor of Bacula is the Free Software Foundation Europe
+ (FSFE), Fiduciary Program, Sumatrastrasse 25, 8006 Zürich,
+ Switzerland, email:ftf@fsfeurope.org.
+*/
/*
* Definitions for using the Device functions in Bacula
* Tape and File storage access
*
* Kern Sibbald, MM
*
- * Version $Id$
- *
*/
-/*
- Copyright (C) 2000-2006 Kern Sibbald
-
- This program is free software; you can redistribute it and/or
- modify it under the terms of the GNU General Public License
- version 2 as amended with additional clauses defined in the
- file LICENSE in the main source directory.
-
- 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
- the file LICENSE for additional details.
+/*
+ * Some details of how volume and device reservations work
+ *
+ * class VOLRES:
+ * set_in_use() volume being used on current drive
+ * clear_in_use() no longer being used. Can be re-used or moved.
+ * set_swapping() set volume being moved to another drive
+ * is_swapping() volume is being moved to another drive
+ * clear_swapping() volume normal
+ *
+ * class DEVICE:
+ * set_load() set to load volume
+ * needs_load() volume must be loaded (i.e. set_load done)
+ * clear_load() load done.
+ * set_unload() set to unload volume
+ * needs_unload() volume must be unloaded
+ * clear_unload() volume unloaded
+ *
+ * reservations are temporary until the drive is acquired
+ * inc_reserved() increments num of reservations
+ * dec_reserved() decrements num of reservations
+ * num_reserved() number of reservations
+ *
+ * class DCR:
+ * set_reserved() sets local reserve flag and calls dev->inc_reserved()
+ * clear_reserved() clears local reserve flag and calls dev->dec_reserved()
+ * is_reserved() returns local reserved flag
+ * unreserve_device() much more complete unreservation
+ *
*/
-
#ifndef __DEV_H
#define __DEV_H 1
#undef DCR /* used by Bacula */
-/* #define NEW_LOCK 1 */
-
-#define new_lock_device(dev) _new_lock_device(__FILE__, __LINE__, (dev))
-#define new_lock_device_state(dev,state) _new_lock_device(__FILE__, __LINE__, (dev), (state))
-#define new_unlock_device(dev) _new_unlock_device(__FILE__, __LINE__, (dev))
-
-#define lock_device(d) _lock_device(__FILE__, __LINE__, (d))
-#define unlock_device(d) _unlock_device(__FILE__, __LINE__, (d))
-#define block_device(d, s) _block_device(__FILE__, __LINE__, (d), s)
-#define unblock_device(d) _unblock_device(__FILE__, __LINE__, (d))
-#define steal_device_lock(d, p, s) _steal_device_lock(__FILE__, __LINE__, (d), (p), s)
-#define give_back_device_lock(d, p) _give_back_device_lock(__FILE__, __LINE__, (d), (p))
-
/* Return values from wait_for_sysop() */
enum {
W_ERROR = 1,
B_TAPE_DEV,
B_DVD_DEV,
B_FIFO_DEV,
- B_PROG_DEV
+ B_VTAPE_DEV, /* change to B_TAPE_DEV after init */
+ B_FTP_DEV,
+ B_VTL_DEV
};
/* Generic status bits returned from status_dev() */
#define BMT_IM_REP_EN (1<<9) /* immediate report enabled */
-/* Test capabilities */
-#define dev_cap(dev, cap) ((dev)->capabilities & (cap))
-
/* Bits for device capabilities */
#define CAP_EOF (1<<0) /* has MTWEOF */
#define CAP_BSR (1<<1) /* has MTBSR */
#define CAP_CLOSEONPOLL (1<<18) /* Close device on polling */
#define CAP_POSITIONBLOCKS (1<<19) /* Use block positioning */
#define CAP_MTIOCGET (1<<20) /* Basic support for fileno and blkno */
-#define CAP_REQMOUNT (1<<21) /* Require mount to read files back (typically: DVD) */
+#define CAP_REQMOUNT (1<<21) /* Require mount/unmount */
#define CAP_CHECKLABELS (1<<22) /* Check for ANSI/IBM labels */
+#define CAP_BLOCKCHECKSUM (1<<23) /* Create/test block checksum */
/* Test state */
#define dev_state(dev, st_state) ((dev)->state & (st_state))
#define ST_PART_SPOOLED (1<<18) /* spooling part */
#define ST_FREESPACE_OK (1<<19) /* Have valid freespace for DVD */
-/* dev_blocked states (mutually exclusive) */
-enum {
- BST_NOT_BLOCKED = 0, /* not blocked */
- BST_UNMOUNTED, /* User unmounted device */
- BST_WAITING_FOR_SYSOP, /* Waiting for operator to mount tape */
- BST_DOING_ACQUIRE, /* Opening/validating/moving tape */
- BST_WRITING_LABEL, /* Labeling a tape */
- BST_UNMOUNTED_WAITING_FOR_SYSOP, /* User unmounted during wait for op */
- BST_MOUNT /* Mount request */
-};
/* Volume Catalog Information structure definition */
struct VOLUME_CAT_INFO {
uint32_t EndFile; /* Last file number */
uint32_t EndBlock; /* Last block number */
int32_t LabelType; /* Bacula/ANSI/IBM */
- int32_t Slot; /* Slot in changer */
- bool InChanger; /* Set if vol in current magazine */
+ int32_t Slot; /* >0=Slot loaded, 0=nothing, -1=unknown */
uint32_t VolCatMaxJobs; /* Maximum Jobs to write to volume */
uint32_t VolCatMaxFiles; /* Maximum files to write to volume */
uint64_t VolCatMaxBytes; /* Max bytes to write to volume */
uint64_t VolCatCapacityBytes; /* capacity estimate */
- uint64_t VolReadTime; /* time spent reading */
- uint64_t VolWriteTime; /* time spent writing this Volume */
+ btime_t VolReadTime; /* time spent reading */
+ btime_t VolWriteTime; /* time spent writing this Volume */
+ int64_t VolMediaId; /* MediaId */
+ utime_t VolFirstWritten; /* Time of first write */
+ utime_t VolLastWritten; /* Time of last write */
+ bool InChanger; /* Set if vol in current magazine */
+ bool is_valid; /* set if this data is valid */
char VolCatStatus[20]; /* Volume status */
char VolCatName[MAX_NAME_LENGTH]; /* Desired volume to mount */
};
-
-typedef struct s_steal_lock {
- pthread_t no_wait_id; /* id of no wait thread */
- int dev_blocked; /* state */
- int dev_prev_blocked; /* previous blocked state */
-} bsteal_lock_t;
-
class DEVRES; /* Device resource defined in stored_conf.h */
-
class DCR; /* forward reference */
+class VOLRES; /* forward reference */
+
/*
* Device structure definition. There is one of these for
* each physical device. Everything here is "global" to
* that device and effects all jobs using the device.
*/
-class DEVICE {
+class DEVICE: public SMARTALLOC {
+protected:
+ int m_fd; /* file descriptor */
+private:
+ int m_blocked; /* set if we must wait (i.e. change tape) */
+ int m_count; /* Mutex use count -- DEBUG only */
+ int m_num_reserved; /* counter of device reservations */
+ int32_t m_slot; /* slot loaded in drive or -1 if none */
+ pthread_t m_pid; /* Thread that locked -- DEBUG only */
+ bool m_unload; /* set when Volume must be unloaded */
+ bool m_load; /* set when Volume must be loaded */
+
public:
+ DEVICE() {};
+ virtual ~DEVICE() {};
+ DEVICE * volatile swap_dev; /* Swap vol from this device */
dlist *attached_dcrs; /* attached DCR list */
- pthread_mutex_t mutex; /* access control */
- pthread_mutex_t spool_mutex; /* mutex for updating spool_size */
+ bthread_mutex_t m_mutex; /* access control */
+ bthread_mutex_t spool_mutex; /* mutex for updating spool_size */
+ bthread_mutex_t acquire_mutex; /* mutex for acquire code */
+ pthread_mutex_t read_acquire_mutex; /* mutex for acquire read code */
pthread_cond_t wait; /* thread wait variable */
pthread_cond_t wait_next_vol; /* wait for tape to be mounted */
pthread_t no_wait_id; /* this thread must not wait */
- int dev_blocked; /* set if we must wait (i.e. change tape) */
int dev_prev_blocked; /* previous blocked state */
int num_waiting; /* number of threads waiting */
int num_writers; /* number of writing threads */
- int reserved_device; /* number of device reservations */
-
- /* New access control in process of being implemented */
- brwlock_t lock; /* New mutual exclusion lock */
-
- int fd; /* file descriptor */
int capabilities; /* capabilities mask */
int state; /* state mask */
int dev_errno; /* Our own errno */
int openmode; /* parameter passed to open_dev (useful to reopen the device) */
int dev_type; /* device type */
bool autoselect; /* Autoselect in autochanger */
+ bool initiated; /* set when init_dev() called */
int label_type; /* Bacula/ANSI/IBM label types */
uint32_t drive_index; /* Autochanger drive index (base 0) */
- int32_t Slot; /* Slot currently in drive (base 1) */
POOLMEM *dev_name; /* Physical device name */
POOLMEM *prt_name; /* Name used for display purposes */
char *errmsg; /* nicely edited error message */
uint32_t block_num; /* current block number base 0 */
+ uint32_t LastBlock; /* last DEV_BLOCK number written to Volume */
uint32_t file; /* current file number base 0 */
uint64_t file_addr; /* Current file read/write address */
uint64_t file_size; /* Current file size */
uint32_t EndFile; /* last file written */
uint32_t min_block_size; /* min block size */
uint32_t max_block_size; /* max block size */
+ uint32_t max_concurrent_jobs; /* maximum simultaneous jobs this drive */
uint64_t max_volume_size; /* max bytes to put on one volume */
uint64_t max_file_size; /* max file size to put in one file on volume */
uint64_t volume_capacity; /* advisory capacity */
uint64_t part_size; /* current part size */
uint32_t part; /* current part number (starts at 0) */
uint64_t part_start; /* current part start address (relative to the whole volume) */
- uint32_t num_parts; /* number of parts WRITTEN on the DVD */
+ uint32_t num_dvd_parts; /* number of parts WRITTEN on the DVD */
/* state ST_FREESPACE_OK is set if free_space is valid */
uint64_t free_space; /* current free space on medium (without the current part) */
int free_space_errno; /* indicates errno getting freespace */
bool truncating; /* if set, we are currently truncating the DVD */
- bool truncated_dvd; /* if set, we have a truncated DVD in the drive */
+ bool blank_dvd; /* if set, we have a blank DVD in the drive */
utime_t vol_poll_interval; /* interval between polling Vol mount */
DEVRES *device; /* pointer to Device Resource */
+ VOLRES *vol; /* Pointer to Volume reservation item */
btimer_t *tid; /* timer id */
VOLUME_CAT_INFO VolCatInfo; /* Volume Catalog Information */
char pool_name[MAX_NAME_LENGTH]; /* pool name */
char pool_type[MAX_NAME_LENGTH]; /* pool type */
- /* Device wait times ***FIXME*** look at durations */
- char BadVolName[MAX_NAME_LENGTH]; /* Last wrong Volume mounted */
+ char UnloadVolName[MAX_NAME_LENGTH]; /* Last wrong Volume mounted */
bool poll; /* set to poll Volume */
+ /* Device wait times ***FIXME*** look at durations */
int min_wait;
int max_wait;
int max_num_wait;
int rem_wait_sec;
int num_wait;
+ btime_t last_timer; /* used by read/write/seek to get stats (usec) */
+ btime_t last_tick; /* contains last read/write time (usec) */
+
+ btime_t DevReadTime;
+ btime_t DevWriteTime;
+ uint64_t DevWriteBytes;
+ uint64_t DevReadBytes;
+
/* Methods */
+ btime_t get_timer_count(); /* return the last timer interval (ms) */
+
int has_cap(int cap) const { return capabilities & cap; }
+ void clear_cap(int cap) { capabilities &= ~cap; }
+ void set_cap(int cap) { capabilities |= cap; }
+ bool do_checksum() const { return (capabilities & CAP_BLOCKCHECKSUM) != 0; }
int is_autochanger() const { return capabilities & CAP_AUTOCHANGER; }
int requires_mount() const { return capabilities & CAP_REQMOUNT; }
int is_removable() const { return capabilities & CAP_REM; }
- int is_tape() const { return dev_type == B_TAPE_DEV; }
- int is_file() const { return dev_type == B_FILE_DEV; }
+ int is_tape() const { return (dev_type == B_TAPE_DEV ||
+ dev_type == B_VTAPE_DEV); }
+ int is_ftp() const { return dev_type == B_FTP_DEV; }
+ int is_file() const { return (dev_type == B_FILE_DEV); }
int is_fifo() const { return dev_type == B_FIFO_DEV; }
int is_dvd() const { return dev_type == B_DVD_DEV; }
- int is_prog() const { return dev_type == B_PROG_DEV; }
- int is_open() const { return fd >= 0; }
+ int is_vtl() const { return dev_type == B_VTL_DEV; }
+ int is_vtape() const { return dev_type == B_VTAPE_DEV; }
+ int is_open() const { return m_fd >= 0; }
int is_offline() const { return state & ST_OFFLINE; }
int is_labeled() const { return state & ST_LABEL; }
int is_mounted() const { return state & ST_MOUNTED; }
+ int is_unmountable() const { return (is_dvd() || (is_file() && is_removable())); }
+ int num_reserved() const { return m_num_reserved; };
int is_part_spooled() const { return state & ST_PART_SPOOLED; }
int have_media() const { return state & ST_MEDIA; }
int is_short_block() const { return state & ST_SHORT; }
- int is_busy() const { return (state & ST_READ) || num_writers || reserved_device; }
+ int is_busy() const { return (state & ST_READ) || num_writers || num_reserved(); }
int at_eof() const { return state & ST_EOF; }
int at_eot() const { return state & ST_EOT; }
int at_weot() const { return state & ST_WEOT; }
int can_write() const { return is_open() && can_append() &&
is_labeled() && !at_weot(); }
int can_read() const { return state & ST_READ; }
- bool can_steal_lock() const { return dev_blocked &&
- (dev_blocked == BST_UNMOUNTED ||
- dev_blocked == BST_WAITING_FOR_SYSOP ||
- dev_blocked == BST_UNMOUNTED_WAITING_FOR_SYSOP); };
+ bool can_steal_lock() const { return m_blocked &&
+ (m_blocked == BST_UNMOUNTED ||
+ m_blocked == BST_WAITING_FOR_SYSOP ||
+ m_blocked == BST_UNMOUNTED_WAITING_FOR_SYSOP); };
bool waiting_for_mount() const { return
- (dev_blocked == BST_UNMOUNTED ||
- dev_blocked == BST_WAITING_FOR_SYSOP ||
- dev_blocked == BST_UNMOUNTED_WAITING_FOR_SYSOP); };
+ (m_blocked == BST_UNMOUNTED ||
+ m_blocked == BST_WAITING_FOR_SYSOP ||
+ m_blocked == BST_UNMOUNTED_WAITING_FOR_SYSOP); };
+ bool must_unload() const { return m_unload; };
+ bool must_load() const { return m_load; };
const char *strerror() const;
const char *archive_name() const;
const char *name() const;
void set_short_block() { state |= ST_SHORT; };
void set_freespace_ok() { state |= ST_FREESPACE_OK; }
void set_part_spooled(int val) { if (val) state |= ST_PART_SPOOLED; \
- else state &= ~ST_PART_SPOOLED; };
+ else state &= ~ST_PART_SPOOLED;
+ };
+ bool is_volume_to_unload() const { \
+ return m_unload && strcmp(VolHdr.VolumeName, UnloadVolName) == 0; };
+ void set_load() { m_load = true; };
+ void inc_reserved() { m_num_reserved++; }
void set_mounted(int val) { if (val) state |= ST_MOUNTED; \
else state &= ~ST_MOUNTED; };
+ void dec_reserved() { m_num_reserved--; ASSERT(m_num_reserved>=0); };
void clear_append() { state &= ~ST_APPEND; };
void clear_read() { state &= ~ST_READ; };
void clear_labeled() { state &= ~ST_LABEL; };
void clear_offline() { state &= ~ST_OFFLINE; };
void clear_eot() { state &= ~ST_EOT; };
void clear_eof() { state &= ~ST_EOF; };
- void clear_opened() { fd = -1; };
+ void clear_opened() { m_fd = -1; };
void clear_mounted() { state &= ~ST_MOUNTED; };
void clear_media() { state &= ~ST_MEDIA; };
void clear_short_block() { state &= ~ST_SHORT; };
void clear_freespace_ok() { state &= ~ST_FREESPACE_OK; };
+ void clear_unload() { m_unload = false; UnloadVolName[0] = 0; };
+ void clear_load() { m_load = false; };
char *bstrerror(void) { return errmsg; };
-
- void block(int why); /* in dev.c */
- void unblock(); /* in dev.c */
+ char *print_errmsg() { return errmsg; };
+ int32_t get_slot() const { return m_slot; };
+ void setVolCatInfo(bool valid) { VolCatInfo.is_valid = valid; };
+ bool haveVolCatInfo() const { return VolCatInfo.is_valid; };
+ void setVolCatName(const char *name) {
+ bstrncpy(VolCatInfo.VolCatName, name, sizeof(VolCatInfo.VolCatName));
+ setVolCatInfo(false);
+ };
+ char *getVolCatName() { return VolCatInfo.VolCatName; };
+
+ void set_unload(); /* in dev.c */
+ void clear_volhdr(); /* in dev.c */
void close(); /* in dev.c */
- bool truncate(DCR *dcr); /* in dev.c */
- int open(DCR *dcr, int mode); /* in dev.c */
+ void close_part(DCR *dcr); /* in dev.c */
+ bool open(DCR *dcr, int mode); /* in dev.c */
void term(void); /* in dev.c */
- bool rewind(DCR *dcr); /* in dev.c */
+ ssize_t read(void *buf, size_t len); /* in dev.c */
+ ssize_t write(const void *buf, size_t len); /* in dev.c */
bool mount(int timeout); /* in dev.c */
bool unmount(int timeout); /* in dev.c */
void edit_mount_codes(POOL_MEM &omsg, const char *imsg); /* in dev.c */
bool offline_or_rewind(); /* in dev.c */
bool offline(); /* in dev.c */
bool bsf(int count); /* in dev.c */
- bool eod(); /* in dev.c */
+ bool eod(DCR *dcr); /* in dev.c */
bool fsr(int num); /* in dev.c */
bool fsf(int num); /* in dev.c */
bool bsr(int num); /* in dev.c */
bool weof(int num); /* in dev.c */
+ void lock_door(); /* in dev.c */
+ void unlock_door(); /* in dev.c */
+ int32_t get_os_tape_file(); /* in dev.c */
bool scan_dir_for_volume(DCR *dcr); /* in scan.c */
- bool reposition(uint32_t rfile, uint32_t rblock); /* in dev.c */
- void clrerror(int func); /* in dev.c */
-
- void set_blocked(int block) { dev_blocked = block; };
- int get_blocked() const { return dev_blocked; };
- const char *print_blocked() const; /* in dev.c */
- bool is_blocked() const { return dev_blocked != BST_NOT_BLOCKED; };
+ bool reposition(DCR *dcr, uint32_t rfile, uint32_t rblock); /* in dev.c */
+ void clrerror(int func); /* in dev.c */
+ void set_slot(int32_t slot); /* in dev.c */
+ void clear_slot(); /* in dev.c */
+
+
+ bool update_freespace(); /* in dvd.c */
+
+ uint32_t get_file() const { return file; };
+ uint32_t get_block_num() const { return block_num; };
+ int fd() const { return m_fd; };
+
+ /* low level operations */
+ virtual int d_ioctl(int fd, ioctl_req_t request, char *mt_com=NULL);
+ virtual int d_open(const char *pathname, int flags);
+ virtual int d_close(int fd);
+ virtual ssize_t d_read(int fd, void *buffer, size_t count);
+ virtual ssize_t d_write(int fd, const void *buffer, size_t count);
+ virtual boffset_t lseek(DCR *dcr, boffset_t offset, int whence);
+ virtual bool update_pos(DCR *dcr);
+ virtual bool rewind(DCR *dcr);
+ virtual bool truncate(DCR *dcr);
+ virtual void open_device(DCR *dcr, int omode);
+ /*
+ * Locking and blocking calls
+ */
+#ifdef SD_DEBUG_LOCK
+ void dbg_rLock(const char *, int, bool locked=false); /* in lock.c */
+ void dbg_rUnlock(const char *, int); /* in lock.c */
+ void dbg_Lock(const char *, int); /* in lock.c */
+ void dbg_Unlock(const char *, int); /* in lock.c */
+ void dbg_Lock_acquire(const char *, int); /* in lock.c */
+ void dbg_Unlock_acquire(const char *, int); /* in lock.c */
+ void dbg_Lock_read_acquire(const char *, int); /* in lock.c */
+ void dbg_Unlock_read_acquire(const char *, int); /* in lock.c */
+#else
+ void rLock(bool locked=false); /* in lock.c */
+ void rUnlock(); /* in lock.c */
+ void Lock(); /* in lock.c */
+ void Unlock(); /* in lock.c */
+ void Lock_acquire(); /* in lock.c */
+ void Unlock_acquire(); /* in lock.c */
+ void Lock_read_acquire(); /* in lock.c */
+ void Unlock_read_acquire(); /* in lock.c */
+ void Lock_VolCatInfo(); /* in lock.c */
+ void Unlock_VolCatInfo(); /* in lock.c */
+#endif
+ int init_mutex(); /* in lock.c */
+ int init_acquire_mutex(); /* in lock.c */
+ int init_read_acquire_mutex(); /* in lock.c */
+ int init_volcat_mutex(); /* in lock.c */
+ void set_mutex_priorities(); /* in lock.c */
+ int next_vol_timedwait(const struct timespec *timeout); /* in lock.c */
+ void dblock(int why); /* in lock.c */
+ void dunblock(bool locked=false); /* in lock.c */
+ bool is_device_unmounted(); /* in lock.c */
+ void set_blocked(int block) { m_blocked = block; };
+ int blocked() const { return m_blocked; };
+ bool is_blocked() const { return m_blocked != BST_NOT_BLOCKED; };
+ const char *print_blocked() const; /* in dev.c */
private:
- bool do_mount(int mount, int timeout); /* in dev.c */
- void set_mode(int omode); /* in dev.c */
- void open_tape_device(DCR *dcr, int omode); /* in dev.c */
- void open_file_device(DCR *dcr, int omode); /* in dev.c */
- void open_dvd_device(DCR *dcr, int omode); /* in dev.c */
- void set_blocking(); /* in dev.c */
-
+ bool do_tape_mount(int mount, int dotimeout); /* in dev.c */
+ bool do_file_mount(int mount, int dotimeout); /* in dev.c */
+ void set_mode(int omode); /* in dev.c */
+ void open_tape_device(DCR *dcr, int omode); /* in dev.c */
+ void open_file_device(DCR *dcr, int omode); /* in dev.c */
};
-/* Note, these return int not bool! */
inline const char *DEVICE::strerror() const { return errmsg; }
inline const char *DEVICE::archive_name() const { return dev_name; }
inline const char *DEVICE::print_name() const { return prt_name; }
+
+#define CHECK_BLOCK_NUMBERS true
+#define NO_BLOCK_NUMBER_CHECK false
+
/*
* Device Context (or Control) Record.
* There is one of these records for each Job that is using
* the device. Items in this record are "local" to the Job and
* do not affect other Jobs. Note, a job can have multiple
* DCRs open, each pointing to a different device.
+ * Normally, there is only one JCR thread per DCR. However, the
+ * big and important exception to this is when a Job is being
+ * canceled. At that time, there may be two threads using the
+ * same DCR. Consequently, when creating/attaching/detaching
+ * and freeing the DCR we must lock it (m_mutex).
*/
class DCR {
+private:
+ bool m_dev_locked; /* set if dev already locked */
+ int m_dev_lock; /* non-zero if rLock already called */
+ bool m_reserved; /* set if reserved device */
+ bool m_found_in_use; /* set if a volume found in use */
+
public:
dlink dev_link; /* link to attach to dev */
JCR *jcr; /* pointer to JCR */
- DEVICE *dev; /* pointer to device */
+ bthread_mutex_t m_mutex; /* access control */
+ pthread_mutex_t r_mutex; /* rLock pre-mutex */
+ DEVICE * volatile dev; /* pointer to device */
DEVRES *device; /* pointer to device resource */
DEV_BLOCK *block; /* pointer to block */
DEV_RECORD *rec; /* pointer to record */
+ pthread_t tid; /* Thread running this dcr */
int spool_fd; /* fd if spooling */
bool spool_data; /* set to spool data */
bool spooling; /* set when actually spooling */
bool despooling; /* set when despooling */
bool despool_wait; /* waiting for despooling */
- bool dev_locked; /* set if dev already locked */
bool NewVol; /* set if new Volume mounted */
bool WroteVol; /* set if Volume written */
bool NewFile; /* set when EOF written */
- bool reserved_device; /* set if reserve done */
+ bool reserved_volume; /* set if we reserved a volume */
bool any_volume; /* Any OK for dir_find_next... */
+ bool attached_to_dev; /* set when attached to dev */
+ bool keep_dcr; /* do not free dcr in release_dcr */
uint32_t VolFirstIndex; /* First file index this Volume */
uint32_t VolLastIndex; /* Last file index this Volume */
uint32_t FileIndex; /* Current File Index */
uint32_t StartFile; /* Start write file */
uint32_t StartBlock; /* Start write block */
uint32_t EndBlock; /* Ending block written */
+ int64_t VolMediaId; /* MediaId */
int64_t job_spool_size; /* Current job spool size */
int64_t max_job_spool_size; /* Max job spool size */
char VolumeName[MAX_NAME_LENGTH]; /* Volume name */
int Copy; /* identical copy number */
int Stripe; /* RAIT stripe */
VOLUME_CAT_INFO VolCatInfo; /* Catalog info for desired volume */
+
+ /* Methods */
+ void set_dev(DEVICE *ndev) { dev = ndev; };
+ void inc_dev_lock() { m_dev_lock++; };
+ void dec_dev_lock() { m_dev_lock--; };
+ bool found_in_use() const { return m_found_in_use; };
+ void set_found_in_use() { m_found_in_use = true; };
+ void clear_found_in_use() { m_found_in_use = false; };
+ bool is_reserved() const { return m_reserved; };
+ bool is_dev_locked() { return m_dev_locked; }
+ void setVolCatInfo(bool valid) { VolCatInfo.is_valid = valid; };
+ bool haveVolCatInfo() const { return VolCatInfo.is_valid; };
+ void setVolCatName(const char *name) {
+ bstrncpy(VolCatInfo.VolCatName, name, sizeof(VolCatInfo.VolCatName));
+ setVolCatInfo(false);
+ };
+ char *getVolCatName() { return VolCatInfo.VolCatName; };
+
+ /* Methods in lock.c */
+ void dblock(int why) { dev->dblock(why); }
+#ifdef SD_DEBUG_LOCK
+ void dbg_mLock(const char *, int, bool locked); /* in lock.c */
+ void dbg_mUnlock(const char *, int); /* in lock.c */
+#else
+ void mLock(bool locked);
+ void mUnlock();
+#endif
+
+ /* Methods in record.c */
+ bool write_record(DEV_RECORD *rec);
+
+ /* Methods in reserve.c */
+ void clear_reserved();
+ void set_reserved();
+ void unreserve_device();
+
+ /* Methods in vol_mgr.c */
+ bool can_i_use_volume();
+ bool can_i_write_volume();
+
+ /* Methods in mount.c */
+ bool mount_next_write_volume();
+ bool mount_next_read_volume();
+ void mark_volume_in_error();
+ void mark_volume_not_inchanger();
+ int try_autolabel(bool opened);
+ bool find_a_volume();
+ bool is_suitable_volume_mounted();
+ bool is_eod_valid();
+ int check_volume_label(bool &ask, bool &autochanger);
+ void release_volume();
+ void do_swapping(bool is_writing);
+ bool do_unload();
+ bool do_load(bool is_writing);
+ bool is_tape_position_ok();
+
+ /* Methods in block.c */
+ bool write_block_to_device();
+ bool write_block_to_dev();
+ bool read_block_from_device(bool check_block_numbers);
+ bool read_block_from_dev(bool check_block_numbers);
+
+ /* Methods in label.c */
+ bool rewrite_volume_label(bool recycle);
+
};
/*
* Volume reservation class -- see reserve.c
*/
class VOLRES {
+ bool m_swapping; /* set when swapping to another drive */
+ bool m_in_use; /* set when volume reserved or in use */
+ int32_t m_slot; /* slot of swapping volume */
+ uint32_t m_JobId; /* JobId for read volumes */
public:
dlink link;
- char *vol_name;
- DEVICE *dev;
- DCR *dcr;
+ char *vol_name; /* Volume name */
+ DEVICE *dev; /* Pointer to device to which we are attached */
+
+ bool is_swapping() const { return m_swapping; };
+ void set_swapping() { m_swapping = true; };
+ void clear_swapping() { m_swapping = false; };
+ bool is_in_use() const { return m_in_use; };
+ void set_in_use() { m_in_use = true; };
+ void clear_in_use() { m_in_use = false; };
+ void set_slot(int32_t slot) { m_slot = slot; };
+ void clear_slot() { m_slot = -1; };
+ int32_t get_slot() const { return m_slot; };
+ uint32_t get_jobid() const { return m_JobId; };
+ void set_jobid(uint32_t JobId) { m_JobId = JobId; };
};
projects / bacula / bacula / blobdiff