241 lines
8.7 KiB
C
241 lines
8.7 KiB
C
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/******************************************************************************
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*
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* Deadlock Manager support
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*
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* Module %M% Version %I% Date %H%
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*
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* (c) Copyright 1998 Ardent Software Inc. - All Rights Reserved
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* This is unpublished proprietary source code of Ardent Software Inc.
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* The copyright notice above does not evidence any actual or intended
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* publication of such source code.
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*
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*******************************************************************************
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*
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* Maintenence log - insert most recent change descriptions at top
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*
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* Date.... GTAR# WHO Description.........................................
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* 10/14/98 23801 SAP Change copyrights.
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* 10/02/98 23765 CSM Implement device licensing
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* 10/01/98 23316 RJE Added include tokens for daemon initialization.
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* 12/15/97 21984 DTM Changes to provide more complete dead process cleanup
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* 09/03/96 18133 PEJ Removed spurious #endif
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* 08/29/96 18133 NDP Corrected previous changes
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* 08/28/96 18133 SAP Port 9 to HP-UX 10
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* 06/24/96 18650 GMM Split config tokens into LK_readcnf.c
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* 06/18/96 18650 GMM Ported to NT
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* 05/31/96 14803 DTM Initial creation
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******************************************************************************/
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EXTERN struct DBsegment *DBshmseg;
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EXTERN DBDADDR NET_signature;
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EXTERN char *_ULOKPTR; /* system group lock table address */
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EXTERN int _USMFTAB; /* system file lock semaphore table id */
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EXTERN uint *_USEMPTR;
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EXTERN char *_ULFKPTR; /* system file lock table address */
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EXTERN char *_ULOWNPTR; /* address of readl owner's table */
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EXTERN char *_ULWAITPTR; /* address of readl owner's table */
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EXTERN int _ULOWNOFF; /* size of each table */
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EXTERN int _ULWAITOFF; /* size of each table */
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EXTERN char *_FSOWNPTR;
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EXTERN char *_FSWAITPTR;
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EXTERN int _FSOWNOFF;
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EXTERN int _FSWAITOFF;
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EXTERN char scratch_buf[];
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#define EXEC_STRING "uvdlockd"
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#define ERR_LOG "/uvdlockd.log"
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#define SLEEP_INT 60
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#define SLEEP_MINIMUM 15
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#define UVDLOCKD_PID DBshmseg->uvdlockd_pid
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#define PSHM_DLBIT Pshmseg->control.deadlocked
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#define IS_LICENSED Ushmseg->control.login_seat
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#define NORMAL_SHUTDOWN 0 /* Normal shutdown */
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#define SUPERUSER_ERROR 1 /* Not superuser */
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#define FORK_ERROR 2 /* Cannot fork child */
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#define LAYER_ERROR 3 /* Cannot get layer */
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#define LOG_OPEN_ERROR 4 /* Cannot open log file */
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#define BAD_SIG_ERROR 5 /* Bad Signal caught */
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#define SIG2_ERROR 6 /* SigUser2 caught */
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#define DAEMON_EXISTS_ERROR 7 /* daemon already exists */
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#define USER_SHUTDOWN 8 /* User shutdown */
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#define ADM_SHUTDOWN 9 /* User shutdown - manual victim select */
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#define GETUVHOME_ERROR 10 /* Cannot get uvhome */
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#define CHDIR_ERROR 11 /* Cannot change to uvhome */
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#define NO_EVENT_ERROR 12 /* Cannot create NT sleep event */
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#define NO_SIGNAL_ERROR 13 /* Cannot initialize NT signals */
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#define NO_PROCESS_ERROR 14 /* Cannot initialize NT process table */
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#define LK_GENMSG(xxxx) ( ( (xxxx) > Dlmmax ) ?\
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( sprintf(Dldefmsg,"Message[DLM%04d]\n",(xxxx)), Dldefmsg ) :\
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( Dlmmsg[(xxxx-1)] != 0 ?\
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Dlmmsg[(xxxx-1)] :\
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( sprintf(Dldefmsg,"Message[DLM%04d]\n",(xxxx)),\
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Dldefmsg )))
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EXTERN int Dlmmax;
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EXTERN char **Dlmmsg;
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EXTERN char Dldefmsg[];
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#define NO_SUPERUSER_MSG LK_GENMSG(1)
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#define NO_FORK_MSG LK_GENMSG(2)
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#define LAYER_ERROR_MSG LK_GENMSG(3)
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#define LOG_OPEN_MSG LK_GENMSG(4)
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#define BAD_SIG_MSG LK_GENMSG(5)
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#define DAEMON_STARTED_MSG LK_GENMSG(6)
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#define NORMAL_SHUTDOWN_MSG LK_GENMSG(7)
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#define BEG_DEAD_PROCESS LK_GENMSG(8)
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#define END_DEAD_PROCESS LK_GENMSG(9)
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#define BEG_DEADLOCK LK_GENMSG(10)
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#define END_DEADLOCK LK_GENMSG(11)
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#define NO_ATTACH_SHM LK_GENMSG(12)
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#define NO_REMOVE_SHM LK_GENMSG(13)
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#define REMOVE_SHM_SIG LK_GENMSG(14)
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#define REMOVE_READU LK_GENMSG(15)
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#define USR_REQUEST_STOP LK_GENMSG(16)
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#define DAEMON_EXISTS_MSG LK_GENMSG(18)
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#define MANUAL_VICTIM_SELECTED LK_GENMSG(19)
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#define CMD_LINE_OPTIONS LK_GENMSG(20)
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#define NO_DAEMON_MSG LK_GENMSG(21)
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#define CONFIG_OPEN_MSG LK_GENMSG(22)
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#define INVALID_OPTION LK_GENMSG(23)
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#define INVALID_USE LK_GENMSG(24)
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#define OPTION_HEADER LK_GENMSG(25)
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#define OPTION_LINE LK_GENMSG(26)
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#define OPTION_TIMER LK_GENMSG(27)
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#define OPTION_RES LK_GENMSG(28)
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#define OPTION_LOG LK_GENMSG(29)
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#define OPTION_QUERY LK_GENMSG(30)
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#define OPTION_VICTIM LK_GENMSG(31)
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#define OPTION_STOP LK_GENMSG(32)
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#define OPTION_NOTE LK_GENMSG(33)
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#define NOTIFY_VICTIM_MSG LK_GENMSG(34)
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#define NOTIFY_SYSADM_RES LK_GENMSG(35)
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#define DEADLOCK_MSG LK_GENMSG(36)
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#define FEWEST_LOCKS_MSG LK_GENMSG(37)
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#define FEWEST_LOCKS_SIG LK_GENMSG(38)
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#define YOUNGEST_PROC_MSG LK_GENMSG(39)
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#define YOUNGEST_PROC_SIG LK_GENMSG(40)
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#define WALK_DEBUG_MSG LK_GENMSG(41)
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#define DEADLOCK_FOUND_MSG LK_GENMSG(42)
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#define NO_DEADLOCK_FOUND_MSG LK_GENMSG(43)
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#define DEADLOCK_CYCLE_MSG LK_GENMSG(44)
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#define USER_WAITING_MSG LK_GENMSG(45)
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#define USER_MSG LK_GENMSG(46)
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#define WHO_WAITING_MSG LK_GENMSG(47)
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#define PRINTOUT_MSG LK_GENMSG(48)
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#define CONTENTS_MSG LK_GENMSG(49)
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#define DIAG_MSG LK_GENMSG(50)
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#define NO_GETUVHOME_MSG LK_GENMSG(51)
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#define NO_CHDIR_MSG LK_GENMSG(52)
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#define REMOVE_GROUP LK_GENMSG(53)
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#define REMOVE_FILE LK_GENMSG(54)
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#define RES_ERR_MSG LK_GENMSG(55)
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#define TIMER_ERR_MSG LK_GENMSG(56)
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#define NO_EVENT_MSG LK_GENMSG(57)
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#define LK_CLEANUP_MSG1 LK_GENMSG(58)
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#define LK_CLEANUP_MSG2 LK_GENMSG(59)
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#define LK_CLEANUP_MSG3 LK_GENMSG(60)
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#define LK_CLEANUP_MSG4 LK_GENMSG(61)
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#define FIX_LOGIN_CNT_MSG LK_GENMSG(62)
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#define LK_CLEANUP_FSEM LK_GENMSG(63)
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#define LK_CLEANUP_GSEM LK_GENMSG(64)
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#define LK_CLEANUP_LSEM LK_GENMSG(65)
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#define LK_CLEANUP_PSEM LK_GENMSG(66)
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#define LK_CLEANUP_T30SEM LK_GENMSG(67)
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#define LK_CLEANUP_TLOGSEM LK_GENMSG(68)
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#define LK_CLEANUP_TXSEM LK_GENMSG(69)
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#define LK_CLEANUP_UDRSHMSEM LK_GENMSG(70)
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#define LK_CLEANUP_UDRLG0SEM LK_GENMSG(71)
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#define LK_CLEANUP_UDRLG1SEM LK_GENMSG(72)
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#define OPTION_DEAD_PROC LK_GENMSG(73)
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#define NO_SIGNAL_MSG LK_GENMSG(74)
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#define NO_PROCESS_MSG LK_GENMSG(75)
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#define DL_FSEMP 0x01
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#define DL_GSEMP 0x02
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#define DL_FLOCK 0x04
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#define DL_GLOCK 0x08
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#define DL_RLOCK 0x10
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#define DL_LSEMP 0x20
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#define DL_PSEMP 0x40
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#define DL_TSEMP 0x80
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#define DL_TLSEMP 0x100
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#define DL_USEMP1 0x200
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#define DL_USEMP2 0x400
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#define DL_USEMP3 0x800
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#define DL_TXSEMP 0x1000
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#define RES_RAND 0 /* Random Resolution */
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#define RES_OLD 1 /* Oldest transaction */
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#define RES_LOCK 2 /* fewest locks */
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#define RES_SYSADM 3 /* System Administrator */
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#define RES_SPECIAL 4 /* notify victim */
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#define DEADLOCK 2 /* Deadlock State */
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#define NO_DEADLOCK 0 /* Not in deadlock */
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/* Primary WFG structure */
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struct wfg_elem
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{
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struct wfg_elem *nextp, *previous;
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int signature;
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pid_t pid;
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WAITERS *waitnode;
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struct wfg_elem *waiting_for;
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int someone_waiting;
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int visited;
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int passed;
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};
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typedef struct wfg_elem WFG;
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/* Dead process data strcuture */
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struct dead_process{
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int lock_pid;
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int lock_type;
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int lock_sig;
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struct dead_process *previous;
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struct dead_process *next;
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};
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typedef struct dead_process LKlist;
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/* External Function Declaration Section */
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EXTERN int DBlist_find(), DBlist_delete(), DBlist_drop(),
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DBlist_first(), DBlist_next();
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EXTERN int sigtopid();
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/* External Functions Declaration Section for Deadlock Mgr specific code */
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EXTERN void LK_cleanup(), /* LK_clean.c */
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LK_get_bad_pshmsegs(), /* LK_clean.c */
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LK_get_semaphore_list(), /* LK_clean.c */
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LK_get_pid_list(), /* LK_clean.c */
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LK_add_dl_list(), /* LK_list.c */
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LK_delete_dl_list(), /* LK_list.c */
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LK_shutdown_daemon(), /* LK_main.c */
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LK_log_message(), /* LK_misc.c */
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LK_print_options(), /* LK_misc.c */
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LK_debug_print(), /* LK_misc.c */
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LK_notify_victim(), /* LK_misc.c */
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LK_init_daemon(), /* LK_os.c */
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LK_cleanup_wfg(), /* LK_wfg.c */
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LK_build_wfg(); /* LK_wfg.c */
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EXTERN int LK_read_config(), /* LK_readcnf.c */
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LK_init_wfg(), /* LK_wfg.c */
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LK_walk_wfg(); /* LK_wfg.c */
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#if COMPUTER != HP & COMPUTER != WINNT
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EXTERN mode_t umask();
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#endif
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#ifndef MSWIN
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EXTERN int atoi(), kill();
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EXTERN uid_t getuid();
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EXTERN pid_t fork(), setsid();
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EXTERN char *strchr();
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#endif
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