18dc607a3b
of the struct plex, which tore apart the mutex linked lists when the plex table was expanded. Now we maintain a pool of mutexes (currently 32) to be shared by all plexes. This is still a lot better than the splhigh() method used in other architectures. update_volume_config: Remove redundant diskconfig parameter. expand_table: Add parameters file and line if we're debugging. Approved by: re (jhb)
264 lines
9.1 KiB
C
264 lines
9.1 KiB
C
/*-
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* Copyright (c) 1997, 1998
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* Nan Yang Computer Services Limited. All rights reserved.
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*
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* This software is distributed under the so-called ``Berkeley
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* License'':
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Nan Yang Computer
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* Services Limited.
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* 4. Neither the name of the Company nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* This software is provided ``as is'', and any express or implied
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* warranties, including, but not limited to, the implied warranties of
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* merchantability and fitness for a particular purpose are disclaimed.
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* In no event shall the company or contributors be liable for any
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* direct, indirect, incidental, special, exemplary, or consequential
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* damages (including, but not limited to, procurement of substitute
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* goods or services; loss of use, data, or profits; or business
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* interruption) however caused and on any theory of liability, whether
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* in contract, strict liability, or tort (including negligence or
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* otherwise) arising in any way out of the use of this software, even if
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* advised of the possibility of such damage.
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*
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* $Id: vinumext.h,v 1.33 2003/05/23 00:57:48 grog Exp $
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* $FreeBSD$
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*/
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/* vinumext.h: external definitions */
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/* *sigh* We still need this at the moment. */
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#ifdef _KERNEL
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extern struct _vinum_conf vinum_conf; /* configuration information */
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extern struct mtx plexmutex[]; /* mutexes for plexes to use */
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#else
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extern struct __vinum_conf vinum_conf; /* configuration information */
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#endif
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#ifdef VINUMDEBUG
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extern int debug; /* debug flags */
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#endif
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/* Physical read and write drive */
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#define read_drive(a, b, c, d) driveio (a, b, c, d, BIO_READ)
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#define write_drive(a, b, c, d) driveio (a, b, c, d, BIO_WRITE)
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#define CHECKALLOC(ptr, msg) \
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if (ptr == NULL) \
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{ \
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printf (msg); \
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longjmp (command_fail, -1); \
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}
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#ifndef _KERNEL
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struct vnode;
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struct thread;
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#endif
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#ifdef _KERNEL
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int vinum_inactive(int);
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void free_vinum(int);
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int give_sd_to_plex(int plexno, int sdno);
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void give_sd_to_drive(int sdno);
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int give_plex_to_volume(int, int, int);
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struct drive *check_drive(char *);
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enum drive_label_info read_drive_label(struct drive *, int);
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int parse_config(char *, struct keywordset *, int);
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int parse_user_config(char *cptr, struct keywordset *keyset);
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u_int64_t sizespec(char *spec);
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int volume_index(struct volume *volume);
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int plex_index(struct plex *plex);
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int sd_index(struct sd *sd);
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int drive_index(struct drive *drive);
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int my_plex(int volno, int plexno);
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int my_sd(int plexno, int sdno);
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int get_empty_drive(void);
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int find_drive(const char *name, int create);
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int find_drive_by_name(const char *devname, int create);
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int get_empty_sd(void);
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int find_subdisk(const char *name, int create);
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void return_drive_space(int driveno, int64_t offset, int length);
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void free_sd(int sdno);
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void free_volume(int volno);
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int get_empty_plex(void);
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int find_plex(const char *name, int create);
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void free_plex(int plexno);
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int get_empty_volume(void);
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int find_volume(const char *name, int create);
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void config_subdisk(int);
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void config_plex(int);
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void config_volume(int);
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void config_drive(int);
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void updateconfig(int);
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void update_sd_config(int sdno, int kernelstate);
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void update_plex_config(int plexno, int kernelstate);
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void update_volume_config(int volno);
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void update_config(void);
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void drive_io_done(struct buf *);
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void save_config(void);
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void daemon_save_config(void);
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void write_config(char *, int);
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int start_config(int);
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void finish_config(int);
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void remove(struct vinum_ioctl_msg *msg);
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void remove_drive_entry(int driveno, int force);
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void remove_sd_entry(int sdno, int force, int recurse);
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void remove_plex_entry(int plexno, int force, int recurse);
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void remove_volume_entry(int volno, int force, int recurse);
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void checkdiskconfig(char *);
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int open_drive(struct drive *, struct thread *, int);
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void close_drive(struct drive *drive);
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void close_locked_drive(struct drive *drive);
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int driveio(struct drive *, char *, size_t, off_t, int);
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int set_drive_parms(struct drive *drive);
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int init_drive(struct drive *, int);
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/* void throw_rude_remark (int, struct _ioctl_reply *, char *, ...); XXX */
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void throw_rude_remark(int, char *,...);
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void format_config(char *config, int len);
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void checkkernel(char *op);
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void free_drive(struct drive *drive);
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void down_drive(struct drive *drive);
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void remove_drive(int driveno);
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int vinum_scandisk(char *drivename);
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/* I/O */
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d_open_t vinumopen;
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d_close_t vinumclose;
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d_strategy_t vinumstrategy;
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d_ioctl_t vinumioctl;
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int vinum_super_ioctl(dev_t, u_long, caddr_t);
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int vinumstart(struct buf *bp, int reviveok);
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int launch_requests(struct request *rq, int reviveok);
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void sdio(struct buf *bp);
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/* XXX Do we need this? */
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int vinumpart(dev_t);
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extern jmp_buf command_fail; /* return here if config fails */
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#ifdef VINUMDEBUG
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/* Memory allocation and request tracing */
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void vinum_meminfo(caddr_t data);
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int vinum_mallocinfo(caddr_t data);
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int vinum_rqinfo(caddr_t data);
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void LongJmp(jmp_buf, int);
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char *basename(char *);
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#endif
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#ifdef VINUMDEBUG
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void expand_table(void **, int, int, char *, int);
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#else
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void expand_table(void **, int, int);
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#endif
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struct disklabel;
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struct request;
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struct rqgroup *allocrqg(struct request *rq, int elements);
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void deallocrqg(struct rqgroup *rqg);
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/* Device number decoding */
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int Volno(dev_t x);
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int Plexno(dev_t x);
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int Sdno(dev_t x);
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/* State transitions */
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int set_drive_state(int driveno, enum drivestate state, enum setstateflags flags);
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int set_sd_state(int sdno, enum sdstate state, enum setstateflags flags);
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enum requeststatus checksdstate(struct sd *sd, struct request *rq, daddr_t diskaddr, daddr_t diskend);
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int set_plex_state(int plexno, enum plexstate state, enum setstateflags flags);
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int set_volume_state(int volumeno, enum volumestate state, enum setstateflags flags);
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void update_sd_state(int sdno);
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void forceup(int plexno);
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void update_plex_state(int plexno);
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void update_volume_state(int volno);
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void invalidate_subdisks(struct plex *, enum sdstate);
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void get_volume_label(char *name, int plexes, u_int64_t size, struct disklabel *lp);
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int write_volume_label(int);
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void start_object(struct vinum_ioctl_msg *);
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void stop_object(struct vinum_ioctl_msg *);
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void setstate(struct vinum_ioctl_msg *msg);
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void setstate_by_force(struct vinum_ioctl_msg *msg);
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void vinum_label(int);
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int vinum_writedisklabel(struct volume *, struct disklabel *);
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int initsd(int, int);
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struct buf *parityrebuild(struct plex *, u_int64_t, int, enum parityop, struct rangelock **, off_t *);
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enum requeststatus sddownstate(struct request *rq);
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int restart_plex(int plexno);
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int revive_read(struct sd *sd);
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int revive_block(int sdno);
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void parityops(struct vinum_ioctl_msg *);
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/* Auxiliary functions */
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enum sdstates sdstatemap(struct plex *plex);
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enum volplexstate vpstate(struct plex *plex);
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#endif
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struct drive *validdrive(int driveno, struct _ioctl_reply *);
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struct sd *validsd(int sdno, struct _ioctl_reply *);
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struct plex *validplex(int plexno, struct _ioctl_reply *);
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struct volume *validvol(int volno, struct _ioctl_reply *);
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void resetstats(struct vinum_ioctl_msg *msg);
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/* Locking */
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#ifdef VINUMDEBUG
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int lockdrive(struct drive *drive, char *, int);
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#else
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int lockdrive(struct drive *drive);
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#endif
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void unlockdrive(struct drive *drive);
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int lockvol(struct volume *vol);
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void unlockvol(struct volume *vol);
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int lockplex(struct plex *plex);
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void unlockplex(struct plex *plex);
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struct rangelock *lockrange(daddr_t stripe, struct buf *bp, struct plex *plex);
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int lock_config(void);
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void unlock_config(void);
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/* D<>mon */
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void vinum_daemon(void);
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int vinum_finddaemon(void);
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int vinum_setdaemonopts(int);
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extern struct daemonq *daemonq; /* daemon's work queue */
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extern struct daemonq *dqend; /* and the end of the queue */
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extern struct cdevsw vinum_cdevsw;
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#undef Free /* defined in some funny net stuff */
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#ifdef _KERNEL
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#ifdef VINUMDEBUG
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#define Malloc(x) MMalloc ((x), __FILE__, __LINE__) /* show where we came from */
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#define Free(x) FFree ((x), __FILE__, __LINE__) /* show where we came from */
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caddr_t MMalloc(int size, char *, int);
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void FFree(void *mem, char *, int);
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#define LOCKDRIVE(d) lockdrive (d, __FILE__, __LINE__)
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#else
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#define Malloc(x) malloc((x), M_DEVBUF, \
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curthread->td_proc->p_intr_nesting_level == 0? M_WAITOK: M_NOWAIT)
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#define Free(x) free((x), M_DEVBUF)
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#define LOCKDRIVE(d) lockdrive (d)
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#endif
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#else
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#define Malloc(x) malloc ((x)) /* just the size */
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#define Free(x) free ((x)) /* just the address */
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#endif
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/* Local Variables: */
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/* fill-column: 50 */
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/* End: */
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