/*
Bacula® - The Network Backup Solution
- Copyright (C) 2000-2008 Free Software Foundation Europe e.V.
+ Copyright (C) 2000-2009 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.
#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))
int m_fd; /* file descriptor */
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 */
- int m_num_reserved; /* counter of device reservations */
- int32_t m_slot; /* slot loaded in drive or -1 if none */
public:
DEVICE * volatile swap_dev; /* Swap vol from this device */
dlist *attached_dcrs; /* attached DCR list */
- pthread_mutex_t m_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_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 */
uint32_t max_block_size; /* max block size */
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 max_concurrent_jobs; /* maximum simultaneous jobs this drive */
uint64_t volume_capacity; /* advisory capacity */
uint64_t max_spool_size; /* maximum spool file size */
uint64_t spool_size; /* current spool size for this device */
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; }
void init_backend();
int (*d_open)(const char *pathname, int flags, ...);
int (*d_close)(int fd);
- int (*d_ioctl)(int fd, unsigned long int request, ...);
+ int (*d_ioctl)(int fd, ioctl_req_t request, ...);
ssize_t (*d_read)(int fd, void *buffer, size_t count);
ssize_t (*d_write)(int fd, const void *buffer, size_t count);
* Locking and blocking calls
*/
#ifdef SD_DEBUG_LOCK
- void _r_dlock(const char *, int); /* in lock.c */
+ void _r_dlock(const char *, int, bool locked=false); /* in lock.c */
void _r_dunlock(const char *, int); /* in lock.c */
void _dlock(const char *, int); /* in lock.c */
void _dunlock(const char *, int); /* in lock.c */
#else
- void r_dlock(); /* in lock.c */
+ void r_dlock(bool locked=false); /* in lock.c */
void r_dunlock() { dunlock(); }
void dlock() { P(m_mutex); }
void dunlock() { V(m_mutex); }
#endif
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 */
+ 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 */
+ void open_dvd_device(DCR *dcr, int omode); /* in dev.c */
};
inline const char *DEVICE::strerror() const { return errmsg; }
* 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:
public:
dlink dev_link; /* link to attach to dev */
JCR *jcr; /* pointer to JCR */
+ bthread_mutex_t m_mutex; /* access control */
DEVICE * volatile dev; /* pointer to device */
DEVRES *device; /* pointer to device resource */
DEV_BLOCK *block; /* pointer to block */
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; }
+#ifdef SD_DEBUG_LOCK
+ void _dlock(const char *, int); /* in lock.c */
+ void _dunlock(const char *, int); /* in lock.c */
+#else
void dlock() { dev->dlock(); m_dev_locked = true; }
void dunlock() { m_dev_locked = false; dev->dunlock(); }
+#endif
void dblock(int why) { dev->dblock(why); }
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();
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();
};
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; /* Volume name */
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