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/****************************************************************
* *
* Copyright (c) 2001-2020 Fidelity National Information *
* Services, Inc. and/or its subsidiaries. All rights reserved. *
* *
* This source code contains the intellectual property *
* of its copyright holder(s), and is made available *
* under a license. If you do not know the terms of *
* the license, please stop and do not read further. *
* *
****************************************************************/
#include "mdef.h"
#include <sys/mman.h>
#ifndef __MVS__
#include <sys/param.h>
#endif
#include <errno.h>
#include <sys/sem.h>
#include <sys/shm.h>
#include <sys/time.h>
#include "gtm_stdlib.h"
#include "gtm_ipc.h"
#include "gtm_un.h"
#include "gtm_socket.h"
#include "gtm_fcntl.h"
#include "gtm_unistd.h"
#include "gtm_string.h"
#include "gtm_sem.h"
#include "gtm_statvfs.h"
#include "hugetlbfs_overrides.h" /* for the ADJUST_SHM_SIZE_FOR_HUGEPAGES macro */
#include "gt_timer.h"
#include "gdsroot.h"
#include "gtm_facility.h"
#include "fileinfo.h"
#include "gdsbt.h"
#include "gdsfhead.h"
#include "gdsblk.h"
#include "gdscc.h"
#include "min_max.h"
#include "gdsblkops.h"
#include "filestruct.h"
#include "parse_file.h"
#include "jnl.h"
#include "interlock.h"
#include "io.h"
#include "iosp.h"
#include "error.h"
#include "mutex.h"
#include "gtmio.h"
#include "mupipbckup.h"
#include "gtmimagename.h"
#include "mmseg.h"
#include "gtmsecshr.h"
#include "secshr_client.h"
#include "ftok_sems.h"
#include "repl_msg.h"
#include "gtmsource.h"
#include "anticipatory_freeze.h"
/* Include prototypes */
#include "mlk_shr_init.h"
#include "gtm_c_stack_trace.h"
#include "eintr_wrappers.h"
#include "eintr_wrapper_semop.h"
#include "is_file_identical.h"
#include "repl_instance.h"
#include "util.h"
#include "dbfilop.h"
#include "gvcst_protos.h"
#include "is_raw_dev.h"
#include "gv_match.h"
#include "do_semop.h"
#include "gvcmy_open.h"
#include "wcs_sleep.h"
#include "do_shmat.h"
#include "send_msg.h"
#include "gtmmsg.h"
#include "shmpool.h"
#include "gtm_permissions.h"
#include "wbox_test_init.h"
#include "gtmcrypt.h"
#include "have_crit.h"
#ifdef __MVS__
#include "gtm_zos_io.h"
#endif
#include "db_snapshot.h"
#include "lockconst.h" /* for LOCK_AVAILABLE */
#include "recover_truncate.h"
#include "get_fs_block_size.h"
#include "add_inter.h"
#include "dpgbldir.h"
#include "tp_change_reg.h"
#include "mu_gv_cur_reg_init.h"
#include "mlkdef.h"
#define REQRUNDOWN_TEXT "semid is invalid but shmid is valid or at least one of sem_ctime or shm_ctime are non-zero"
#define MAX_ACCESS_SEM_RETRIES 2 /* see comment below where this macro is used for why it needs to be 2 */
#define RTS_ERROR(...) rts_error_csa(CSA_ARG(csa) __VA_ARGS__)
#define SEND_MSG(...) send_msg_csa(CSA_ARG(csa) __VA_ARGS__)
#define SS_INFO_INIT(CSA) \
MBSTART { \
shm_snapshot_ptr_t ss_shm_ptr; \
node_local_ptr_t lcl_cnl; \
\
lcl_cnl = CSA->nl; \
lcl_cnl->ss_shmid = INVALID_SHMID; \
lcl_cnl->ss_shmcycle = 0; \
CLEAR_SNAPSHOTS_IN_PROG(lcl_cnl); \
lcl_cnl->num_snapshots_in_effect = 0; \
SET_LATCH_GLOBAL(&lcl_cnl->snapshot_crit_latch, LOCK_AVAILABLE); \
assert(1 == MAX_SNAPSHOTS); /* To ensure that we revisit this whenever multiple snapshots is implemented */ \
ss_shm_ptr = (shm_snapshot_ptr_t)(SS_GETSTARTPTR(CSA)); \
SS_DEFAULT_INIT_POOL(ss_shm_ptr); \
} MBEND
/* If a current value doesn't match the saved value used in the original calculation revert to the original */
#define DSE_VERIFY_AND_RESTORE(CSA, TSD, VAR) \
MBSTART { \
assert(IS_DSE_IMAGE); \
if (CSA->nl->saved_##VAR != TSD->VAR) \
{ \
gtm_putmsg_csa(CSA_ARG(CSA) VARLSTCNT(6) ERR_NLRESTORE, 4, \
LEN_AND_LIT(#VAR), TSD->VAR, CSA->nl->saved_##VAR); \
TSD->VAR = CSA->nl->saved_##VAR; \
} \
} MBEND
#define GTM_ATTACH_CHECK_ERROR \
MBSTART { \
if (-1 == status_l) \
{ \
RTS_ERROR(VARLSTCNT(9) ERR_DBFILERR, 2, DB_LEN_STR(reg), \
ERR_TEXT, 2, LEN_AND_LIT("Error attaching to database shared memory"), errno); \
} \
} MBEND
#define GTM_ATTACH_SHM \
MBSTART { \
status_l = (sm_long_t)(csa->db_addrs[0] = (sm_uc_ptr_t)do_shmat(udi->shmid, 0, SHM_RND)); \
GTM_ATTACH_CHECK_ERROR; \
csa->nl = (node_local_ptr_t)csa->db_addrs[0]; \
} MBEND
/* These values may potentially be used by DSE to calculate various offsets into the shared memory layout.
* Note that blk_size does not affect the offset calculation for MM. */
#define GTM_CACHE_INTO_SHM(CSA, TSD) \
MBSTART { \
CSA->nl->saved_acc_meth = TSD->acc_meth; \
CSA->nl->saved_lock_space_size = TSD->lock_space_size; \
CSA->nl->saved_blk_size = TSD->blk_size; \
CSA->nl->saved_jnl_buffer_size = TSD->jnl_buffer_size; \
} MBEND
#define GTM_ATTACH_SHM_AND_CHECK_VERS(VERMISMATCH, SHM_SETUP_OK) \
MBSTART { \
GTM_ATTACH_SHM; \
/* The following checks for GDS_LABEL_GENERIC and gtm_release_name ensure that the shared memory under consideration \
* is valid. If shared memory is already initialized, do VERMISMATCH check BEFORE referencing any other fields in \
* shared memory. \
*/ \
VERMISMATCH = FALSE; \
SHM_SETUP_OK = FALSE; \
if (!MEMCMP_LIT(csa->nl->label, GDS_LABEL_GENERIC)) \
{ \
if (memcmp(csa->nl->now_running, gtm_release_name, gtm_release_name_len + 1)) \
{ /* Copy csa->nl->now_running into a local variable before passing to rts_error due to the following \
* issue: \
* In VMS, a call to rts_error copies only the error message and its arguments (as pointers) and \
* transfers control to the topmost condition handler which is dbinit_ch() in this case. dbinit_ch() \
* does a PRN_ERROR only for SUCCESS/INFO (VERMISMATCH is neither of them) and in addition \
* nullifies csa->nl as part of its condition handling. It then transfers control to the next level \
* condition handler which does a PRN_ERROR but at that point in time, the parameter \
* csa->nl->now_running is no longer accessible and hence no \parameter substitution occurs (i.e. the \
* error message gets displayed with plain !ADs). \
* In UNIX, this is not an issue since the first call to rts_error does the error message \
* construction before handing control to the topmost condition handler. But it does not hurt to do \
* the copy. \
*/ \
assert(strlen(csa->nl->now_running) < SIZEOF(now_running)); \
memcpy(now_running, csa->nl->now_running, SIZEOF(now_running)); \
now_running[SIZEOF(now_running) - 1] = '\0'; /* protection against bad csa->nl->now_running values */ \
VERMISMATCH = TRUE; \
} else \
SHM_SETUP_OK = TRUE; \
} \
} MBEND
#define GTM_VERMISMATCH_ERROR \
MBSTART { \
if (!vermismatch_already_printed) \
{ \
vermismatch_already_printed = TRUE; \
RTS_ERROR(VARLSTCNT(8) ERR_VERMISMATCH, 6, DB_LEN_STR(reg), gtm_release_name_len, gtm_release_name, \
LEN_AND_STR(now_running)); \
} \
} MBEND
#define INIT_DB_ENCRYPTION_IF_NEEDED(DO_CRYPT_INIT, INIT_STATUS, REG, CSA, TSD, CRYPT_WARNING) \
MBSTART { \
int fn_len; \
char *fn; \
\
if (DO_CRYPT_INIT) \
{ \
fn = (char *)(REG->dyn.addr->fname); \
fn_len = REG->dyn.addr->fname_len; \
if (0 == INIT_STATUS) \
INIT_DB_OR_JNL_ENCRYPTION(CSA, TSD, fn_len, fn, INIT_STATUS); \
} \
DO_ERR_PROC_ENCRYPTION_IF_NEEDED(REG, DO_CRYPT_INIT, INIT_STATUS, CRYPT_WARNING); \
} MBEND
#define INIT_PROC_ENCRYPTION_IF_NEEDED(DO_CRYPT_INIT, INIT_STATUS) \
MBSTART { \
if (DO_CRYPT_INIT) \
INIT_PROC_ENCRYPTION(INIT_STATUS); \
} MBEND
#define DO_ERR_PROC_ENCRYPTION_IF_NEEDED(REG, DO_CRYPT_INIT, INIT_STATUS, CRYPT_WARNING) \
MBSTART { \
int fn_len; \
char *fn; \
\
if (DO_CRYPT_INIT && (0 != INIT_STATUS) && !(CRYPT_WARNING)) \
{ \
fn = (char *)(REG->dyn.addr->fname); \
fn_len = REG->dyn.addr->fname_len; \
if (IS_GTM_IMAGE || mu_reorg_encrypt_in_prog) \
{ \
GTMCRYPT_REPORT_ERROR(INIT_STATUS, rts_error, fn_len, fn); \
} else \
{ \
GTMCRYPT_REPORT_ERROR(MAKE_MSG_WARNING(INIT_STATUS), gtm_putmsg, fn_len, fn); \
CRYPT_WARNING = TRUE; \
} \
} \
} MBEND
#define READ_DB_FILE_HEADER(REG, TSD, ERR_RET) \
MBSTART { \
file_control *fc; \
gd_segment *seg; \
mstr *gld_str; \
unix_db_info *udi; \
uint4 fsb_size; \
gd_region *baseDBreg; \
\
seg = REG->dyn.addr; \
fc = seg->file_cntl; \
fc->op = FC_READ; \
fc->op_buff = (sm_uc_ptr_t)TSD; \
fc->op_pos = 1; \
fc->op_len = SGMNT_HDR_LEN; \
dbfilop(fc); \
ERR_RET = 0; \
if (IS_AIO_DBGLDMISMATCH(seg, TSD)) \
{ /* Copy tsd setting for asyncio into seg and retry "dbfilopn"/"db_init" \
* sequence in caller "gvcst_init" by returning with an error. \
*/ \
COPY_AIO_SETTINGS(seg, TSD); /* copies from TSD to seg */ \
ERR_RET = ERR_DBGLDMISMATCH; \
} \
if (IS_RDBF_STATSDB(TSD) && !IS_STATSDB_REGNAME(REG)) \
{ /* This is a case where the file header says it is a statsDB but the region \
* name is not lower case as it should be for a statsDB. Not supported. \
*/ \
rts_error_csa(CSA_ARG(NULL) VARLSTCNT(4) ERR_STATSDBNOTSUPP, 2, DB_LEN_STR(REG)); \
} \
if (!IS_RDBF_STATSDB(TSD) && IS_STATSDB_REGNAME(REG)) \
{ /* This is a case where the file header does NOT say it is a statsDB but the region \
* name is lower case as it should be for a statsDB. This is also an illegal \
* combination so give an appropriate error. \
*/ \
rts_error_csa(CSA_ARG(NULL) VARLSTCNT(6) ERR_INVSTATSDB, 4, DB_LEN_STR(REG), \
REG_LEN_STR(REG)); \
} \
if (TSD->asyncio) \
{ /* AIO = ON, implies we need to use O_DIRECT. \
* Check for db vs fs blksize alignment issues. \
*/ \
udi = FC2UDI(fc); \
fsb_size = get_fs_block_size(udi->fd); \
if (0 != (TSD->blk_size % fsb_size)) \
rts_error_csa(CSA_ARG(NULL) VARLSTCNT(6) ERR_DBBLKSIZEALIGN, 4, \
DB_LEN_STR(REG), TSD->blk_size, fsb_size); \
} \
} MBEND
#define READ_DB_FILE_MASTERMAP(REG, CSD) \
MBSTART { \
file_control *fc; \
\
fc = REG->dyn.addr->file_cntl; \
fc->op = FC_READ; \
fc->op_buff = MM_ADDR(CSD); \
fc->op_len = MASTER_MAP_SIZE(CSD); \
fc->op_pos = MM_BLOCK; \
dbfilop(fc); \
} MBEND
/* Depending on whether journaling and/or replication was enabled at the time of the crash,
* print REQRUNDOWN, REQRECOV, or REQROLLBACK error message.
*/
#define PRINT_CRASH_MESSAGE(CNT, ARG, ...) \
MBSTART { \
if (JNL_ENABLED(tsd)) \
{ \
if (REPL_ENABLED(tsd) && tsd->jnl_before_image) \
RTS_ERROR(VARLSTCNT(10 + CNT) ERR_REQROLLBACK, 4, DB_LEN_STR(reg), \
LEN_AND_STR((ARG)->machine_name), __VA_ARGS__); \
else \
RTS_ERROR(VARLSTCNT(10 + CNT) ERR_REQRECOV, 4, DB_LEN_STR(reg), \
LEN_AND_STR((ARG)->machine_name), __VA_ARGS__); \
} else \
RTS_ERROR(VARLSTCNT(10 + CNT) ERR_REQRUNDOWN, 4, DB_LEN_STR(reg), \
LEN_AND_STR((ARG)->machine_name), __VA_ARGS__); \
} MBEND
#define START_SEM_TIMERS(SEM_STACKTRACE_TIME, SEM_TIMEDOUT, MAX_HRTBT_DELTA) \
MBSTART { \
TIMEOUT_INIT(SEM_TIMEDOUT, MAX_HRTBT_DELTA * MILLISECS_IN_SEC); \
TIMEOUT_INIT(SEM_STACKTRACE_TIME, MAX_HRTBT_DELTA * MILLISECS_IN_SEC / 2); \
} MBEND
#define CANCEL_SEM_TIMERS(SEM_STACKTRACE_TIME, SEM_TIMEDOUT) \
MBSTART { \
TIMEOUT_DONE(SEM_STACKTRACE_TIME); \
TIMEOUT_DONE(SEM_TIMEDOUT); \
} MBEND
#define RETURN_IF_BYPASSED(BYPASSED_FTOK, INDEFINITE_WAIT, SEM_STACKTRACE_TIME, SEM_TIMEDOUT) \
RETURN_IF_ERROR(BYPASSED_FTOK, -1, INDEFINITE_WAIT, SEM_STACKTRACE_TIME, SEM_TIMEDOUT)
#define RETURN_IF_ERROR(COND, RETVAL, INDEFINITE_WAIT, SEM_STACKTRACE_TIME, SEM_TIMEDOUT) \
MBSTART { \
if (COND) \
{ \
if (!INDEFINITE_WAIT) \
CANCEL_SEM_TIMERS(SEM_STACKTRACE_TIME, SEM_TIMEDOUT); \
REVERT; \
return RETVAL; /* "gvcst_init" does cleanup and retries the "db_init" call */ \
} \
} MBEND
#define MU_GV_CUR_REG_FREE(TMP_REG, SAVE_REG) \
{ \
GBLREF gd_region *gv_cur_region; \
\
SAVE_REG = gv_cur_region; \
gv_cur_region = TMP_REG; \
mu_gv_cur_reg_free(); \
gv_cur_region = SAVE_REG; \
}
GBLREF boolean_t is_src_server;
GBLREF boolean_t mupip_jnl_recover;
GBLREF gd_region *gv_cur_region, *db_init_region;
GBLREF ipcs_mesg db_ipcs;
GBLREF gd_addr *gd_header;
GBLREF jnlpool_addrs_ptr_t jnlpool;
GBLREF jnlpool_addrs_ptr_t jnlpool_head;
GBLREF node_local_ptr_t locknl;
GBLREF uint4 mutex_per_process_init_pid;
GBLREF uint4 process_id;
GBLREF jnl_gbls_t jgbl;
GBLREF uint4 mu_reorg_encrypt_in_prog;
GBLREF int pool_init;
GBLREF boolean_t jnlpool_init_needed;
GBLREF mstr extnam_str;
GBLREF mval dollar_zgbldir;
#ifndef MUTEX_MSEM_WAKE
GBLREF int mutex_sock_fd;
#endif
LITREF char gtm_release_name[];
LITREF int4 gtm_release_name_len;
OS_PAGE_SIZE_DECLARE
error_def(ERR_DBFILNOFULLWRT);
error_def(ERR_BADDBVER);
error_def(ERR_CRITSEMFAIL);
error_def(ERR_DBBLKSIZEALIGN);
error_def(ERR_DBCREINCOMP);
error_def(ERR_DBFILERDONLY);
error_def(ERR_DBFILERR);
error_def(ERR_DBFLCORRP);
error_def(ERR_DBGLDMISMATCH);
error_def(ERR_DBIDMISMATCH);
error_def(ERR_DBNAMEMISMATCH);
error_def(ERR_DBNOTGDS);
error_def(ERR_DBSHMNAMEDIFF);
error_def(ERR_FILENOTFND);
error_def(ERR_HOSTCONFLICT);
error_def(ERR_INVOPNSTATSDB);
error_def(ERR_INVSTATSDB);
error_def(ERR_JNLBUFFREGUPD);
error_def(ERR_MMNODYNUPGRD);
error_def(ERR_NLMISMATCHCALC);
error_def(ERR_NLRESTORE);
error_def(ERR_REQRECOV);
error_def(ERR_REQROLLBACK);
error_def(ERR_REQRUNDOWN);
error_def(ERR_STATSDBNOTSUPP);
error_def(ERR_SYSCALL);
error_def(ERR_TEXT);
error_def(ERR_VERMISMATCH);
gd_region *dbfilopn(gd_region *reg)
{
unix_db_info *tmp_udi, *udi;
parse_blk pblk;
mstr file;
char *fnptr, fbuff[MAX_FN_LEN + 1], tmpbuff[MAX_FN_LEN + 1];
struct stat buf;
gd_region *prev_reg, *save_gv_cur_region, *tmp_reg;
gd_segment *seg;
int status;
boolean_t raw;
boolean_t open_read_only;
int stat_res, rc, save_errno;
sgmnt_addrs *csa;
sgmnt_data tsdbuff;
sgmnt_data_ptr_t tsd;
file_control *fc;
unsigned char cstatus;
boolean_t ftok_counter_halted;
ZOS_ONLY(int realfiletag;)
DCL_THREADGBL_ACCESS;
SETUP_THREADGBL_ACCESS;
db_init_region = reg;
seg = reg->dyn.addr;
assert(IS_ACC_METH_BG_OR_MM(seg->acc_meth));
FILE_CNTL_INIT_IF_NULL(seg);
udi = FILE_INFO(reg);
csa = &udi->s_addrs;
file.addr = (char *)seg->fname;
file.len = seg->fname_len;
memset(&pblk, 0, SIZEOF(pblk));
pblk.buffer = fbuff;
pblk.buff_size = MAX_FN_LEN;
pblk.fop = (F_SYNTAXO | F_PARNODE);
memcpy(fbuff, file.addr, file.len);
*(fbuff + file.len) = '\0';
if (is_raw_dev(fbuff))
{
raw = TRUE;
pblk.def1_buf = DEF_NODBEXT;
pblk.def1_size = SIZEOF(DEF_NODBEXT) - 1;
} else
{
raw = FALSE;
pblk.def1_buf = DEF_DBEXT;
pblk.def1_size = SIZEOF(DEF_DBEXT) - 1;
}
status = parse_file(&file, &pblk);
/* When opening a reservedDB type database file, it is possible that it does not (yet) exist. In that case,
* make a call out to create it.
*/
if (!(status & 1))
{
if (!IS_GTCM_GNP_SERVER_IMAGE)
{
free(seg->file_cntl->file_info);
free(seg->file_cntl);
seg->file_cntl = NULL;
}
rts_error_csa(CSA_ARG(NULL) VARLSTCNT(5) ERR_DBFILERR, 2, DB_LEN_STR(reg), status);
}
assert(((int)pblk.b_esl + 1) <= SIZEOF(seg->fname));
memcpy(seg->fname, pblk.buffer, pblk.b_esl);
pblk.buffer[pblk.b_esl] = 0;
seg->fname[pblk.b_esl] = 0;
seg->fname_len = pblk.b_esl;
if (pblk.fnb & F_HAS_NODE)
{ /* Remote node specification given */
assert(pblk.b_node && pblk.l_node[pblk.b_node - 1] == ':');
gvcmy_open(reg, &pblk);
return (gd_region *)-1L;
}
fnptr = (char *)seg->fname + pblk.b_node;
udi->raw = raw;
udi->fn = (char *)fnptr;
/* If MUPIP JOURNAL -EXTRACT, then open db in read-only mode or else we could incorrectly reset crash field
* in journal file header as part of gds_rundown because we have the db open in read_write mode (GTM-8483).
*/
open_read_only = (jgbl.mur_extract && !jgbl.mur_update);
for ( ; ; )
{
if (!open_read_only)
{
#ifdef DEBUG
if (WBTEST_ENABLED(WBTEST_OPENFILE_DB))
{
udi->fd = FD_INVALID;
errno = gtm_white_box_test_case_count ? gtm_white_box_test_case_count : EPERM;
} else
#endif
OPENFILE_DB(fnptr, O_RDWR, udi, seg);
save_errno = errno;
/* When opening an auto-create type of reservedDB database file, it is possible
* that it does not (yet) exist. In that case, make a call out to create it. Note that
* a statsdb (which is also an autodb) gets created in "gvcst_init" so skip that here.
*/
if ((FD_INVALID == udi->fd) && (ENOENT == errno) && IS_AUTODB_REG(reg) && !IS_STATSDB_REG(reg))
{ /* We want to get a lock to ensure only one process does the create. But the lock needs to be
* based on an existing file ("ftok_sem_get" relies on that). So use "/" directory. That is
* guaranteed to exist on any system and will serve as a sync point for ANY/ALL autodb creates.
*/
/* First check if we have enough space to do ".new" suffix addition (done a little later) */
if (ARRAYSIZE(seg->fname) <= seg->fname_len + STR_LIT_LEN(EXT_NEW))
rts_error_csa(CSA_ARG(NULL) VARLSTCNT(4) ERR_DBFILERR, 2, DB_LEN_STR(reg));
save_gv_cur_region = gv_cur_region;
mu_gv_cur_reg_init();
tmp_reg = gv_cur_region;
gv_cur_region = save_gv_cur_region;
tmp_reg->dyn.addr->fname[0] = '/';
tmp_reg->dyn.addr->fname[1] = '\0';
tmp_reg->dyn.addr->fname_len = 1;
tmp_udi = FILE_INFO(tmp_reg);
tmp_udi->fn = (char *)tmp_reg->dyn.addr->fname;
if (!ftok_sem_get(tmp_reg, FALSE, GTM_ID, FALSE, &ftok_counter_halted))
{
MU_GV_CUR_REG_FREE(tmp_reg, save_gv_cur_region);
rts_error_csa(CSA_ARG(NULL) VARLSTCNT(4) ERR_DBFILERR, 2, DB_LEN_STR(reg));
}
assert(!ftok_counter_halted); /* since we specified FALSE as the 2nd parameter ("incr_cnt") */
/* Now that we got the ftok lock, check if the file exists. If so skip the create. */
OPENFILE_DB(fnptr, O_RDWR, udi, seg);
if ((FD_INVALID == udi->fd) && (ENOENT == errno))
{ /* File still does not exist. Create it. */
/* If autodb file name is say "tmp.dat", point region to a temporary filename
* "tmp.dat_%YGTM" (suffix EXT_NEW). This is similar to the logic used in "cre_jnl_file"
* with ".mjl" and ".mjl_%YGTM" files. Create database "tmp.dat_%YGTM" and initialize it.
* And finally rename it to "tmp.dat". If we instead create "tmp.dat" and then fill it
* with GT.M db file header content, it is possible while this is happening, other
* processes see the file exist (OPENFILE_DB returns TRUE above) and proceed assuming the
* file is a valid GT.M database file when actually the creation is not yet done.
*/
MEMCPY_LIT(seg->fname + seg->fname_len, EXT_NEW);
seg->fname_len += STR_LIT_LEN(EXT_NEW);
seg->fname[seg->fname_len] = '\0';
cstatus = gvcst_cre_autoDB(reg);
if (EXIT_NRM != cstatus)
{
ftok_sem_release(tmp_reg, FALSE, FALSE);
MU_GV_CUR_REG_FREE(tmp_reg, save_gv_cur_region);
save_errno = TREF(mu_cre_file_openrc);
rts_error_csa(CSA_ARG(NULL) VARLSTCNT(4) ERR_DBFILERR, 2, DB_LEN_STR(reg));
}
memcpy(tmpbuff, seg->fname, seg->fname_len + 1); /* + 1 to include terminating '\0' */
seg->fname_len -= STR_LIT_LEN(EXT_NEW);
seg->fname[seg->fname_len] = '\0';
/* Rename "tmp.dat_%YGTM" to "tmp.dat" */
if (-1 == RENAME(tmpbuff, (char *)seg->fname))
{
save_errno = errno;
ftok_sem_release(tmp_reg, FALSE, FALSE);
MU_GV_CUR_REG_FREE(tmp_reg, save_gv_cur_region);
rts_error_csa(CSA_ARG(NULL) VARLSTCNT(5) ERR_DBFILERR, 2, DB_LEN_STR(reg),
save_errno);
}
}
ftok_sem_release(tmp_reg, FALSE, FALSE);
MU_GV_CUR_REG_FREE(tmp_reg, save_gv_cur_region);
/* DB file exists now - retry the open */
OPENFILE_DB(fnptr, O_RDWR, udi, seg);
}
if (!udi->grabbed_access_sem)
{ /* If the process already has standalone access, these fields are initialized in mu_rndwn_file */
udi->ftok_semid = INVALID_SEMID;
udi->semid = INVALID_SEMID;
udi->shmid = INVALID_SHMID;
udi->gt_sem_ctime = 0;
udi->gt_shm_ctime = 0;
}
reg->read_only = FALSE; /* maintain csa->read_write simultaneously */
csa->read_write = TRUE; /* maintain reg->read_only simultaneously */
csa->orig_read_write = TRUE;
}
if (open_read_only || (FD_INVALID == udi->fd))
{
OPENFILE_DB(fnptr, O_RDONLY, udi, seg);
if (FD_INVALID == udi->fd)
{
save_errno = errno;
if (!IS_GTCM_GNP_SERVER_IMAGE)
{
free(seg->file_cntl->file_info);
free(seg->file_cntl);
seg->file_cntl = NULL;
}
rts_error_csa(CSA_ARG(NULL) VARLSTCNT(5) ERR_DBFILERR, 2, DB_LEN_STR(reg), save_errno);
}
reg->read_only = TRUE; /* maintain csa->read_write simultaneously */
csa->read_write = FALSE; /* maintain reg->read_only simultaneously */
csa->orig_read_write = FALSE;
if (!open_read_only && !((EPERM == save_errno) || (EACCES == save_errno)))
{
if (!IS_GTM_IMAGE)
gtm_putmsg_csa(CSA_ARG(csa) VARLSTCNT(6) ERR_DBFILERDONLY, 3,
DB_LEN_STR(reg), (int)0, save_errno);
send_msg_csa(CSA_ARG(csa) VARLSTCNT(6) ERR_DBFILERDONLY, 3, DB_LEN_STR(reg), (int)0, save_errno);
}
}
if (!reg->owning_gd->is_dummy_gbldir && (pool_init || !jnlpool_init_needed || !CUSTOM_ERRORS_AVAILABLE))
break;
/* Caller created a dummy region (not a region from a gld). So determine asyncio & acc_meth setting
* from db file header and copy that to segment to avoid DBGLDMISMATCH error later in "db_init".
* Or need to check replication state to decide if an early call to jnlpool_init is needed in gvcst_init
*/
tsd = udi->fd_opened_with_o_direct ? (sgmnt_data_ptr_t)(TREF(dio_buff)).aligned : &tsdbuff;
/* If O_DIRECT, use aligned buffer */
fc = seg->file_cntl;
fc->op = FC_READ;
fc->op_buff = (sm_uc_ptr_t)tsd;
fc->op_pos = 1;
fc->op_len = SGMNT_HDR_LEN;
dbfilop(fc);
if (!pool_init && jnlpool_init_needed && CUSTOM_ERRORS_AVAILABLE)
csa->repl_state = tsd->repl_state; /* needed in gvcst_init */
if (!reg->owning_gd->is_dummy_gbldir)
break;
if (!IS_AIO_DBGLDMISMATCH(seg, tsd))
break;
CLOSEFILE_RESET(udi->fd, rc); /* close file and reopen it with correct asyncio setting */
COPY_AIO_SETTINGS(seg, tsd); /* copies from tsd to seg */
}
# ifdef __MVS__
if (-1 == gtm_zos_tag_to_policy(udi->fd, TAG_BINARY, &realfiletag))
TAG_POLICY_SEND_MSG(fnptr, errno, realfiletag, TAG_BINARY);
# endif
/* Now that the file has been opened, use FSTAT on the fd instead of STAT on the file name. The latter is risky for AUTODB
* since it could be concurrently deleted whereas the fd would still be accessible (delete-pending).
*/
FSTAT_FILE(udi->fd, &buf, stat_res);
if (-1 == stat_res)
{
save_errno = errno;
rts_error_csa(CSA_ARG(NULL) VARLSTCNT(5) ERR_DBFILERR, 2, DB_LEN_STR(reg), save_errno);
}
set_gdid_from_stat(&udi->fileid, &buf);
if (prev_reg = gv_match(reg))
{
CLOSEFILE_RESET(udi->fd, rc); /* resets "udi->fd" to FD_INVALID */
free(seg->file_cntl->file_info);
free(seg->file_cntl);
seg->file_cntl = NULL;
return prev_reg;
}
SYNC_OWNING_GD(reg);
return reg;
}
void dbsecspc(gd_region *reg, sgmnt_data_ptr_t csd, gtm_uint64_t *sec_size)
{
gtm_uint64_t tmp_sec_size;
/* Ensure that all the various sections that the shared memory contains are actually
* aligned at the OS_PAGE_SIZE boundary
*/
INIT_NUM_CRIT_ENTRY_IF_NEEDED(csd);
assert(MIN_NODE_LOCAL_SPACE <= NODE_LOCAL_SPACE(csd));
assert(0 == NODE_LOCAL_SPACE(csd) % OS_PAGE_SIZE);
assert(0 == LOCK_SPACE_SIZE(csd) % OS_PAGE_SIZE);
assert(0 == JNL_SHARE_SIZE(csd) % OS_PAGE_SIZE);
assert(0 == SHMPOOL_SECTION_SIZE % OS_PAGE_SIZE);
assert(0 == CACHE_CONTROL_SIZE(csd) % OS_PAGE_SIZE);
/* First compute the size based on sections common to both MM and BG */
tmp_sec_size = NODE_LOCAL_SPACE(csd) + JNL_SHARE_SIZE(csd) + SHMPOOL_SECTION_SIZE + LOCK_SPACE_SIZE(csd);
/* Now, add sections specific to MM and BG */
if (dba_mm == reg->dyn.addr->acc_meth)
tmp_sec_size += SIZEOF_FILE_HDR(csd);
else
{
assertpro(dba_bg == reg->dyn.addr->acc_meth);
tmp_sec_size += CACHE_CONTROL_SIZE(csd) + (LOCK_BLOCK(csd) * DISK_BLOCK_SIZE);
}
ADJUST_SHM_SIZE_FOR_HUGEPAGES(tmp_sec_size, *sec_size); /* *sec_size is adjusted size */
return;
}
int db_init(gd_region *reg, boolean_t ok_to_bypass)
{
boolean_t is_bg, read_only, need_stacktrace, have_standalone_access;
boolean_t shm_setup_ok = FALSE, vermismatch = FALSE, vermismatch_already_printed = FALSE;
boolean_t new_shm_ipc, replinst_mismatch, need_shmctl, need_semctl;
boolean_t gld_do_crypt_init, db_do_crypt_init, semop_success, statsdb_off;
char machine_name[MAX_MCNAMELEN];
int gethostname_res, stat_res, user_id, group_id, perm, save_udi_semid;
int4 status, dblksize, save_errno, wait_time, loopcnt, sem_pid;
sm_long_t status_l;
sgmnt_addrs *csa;
node_local_ptr_t cnl;
sgmnt_data tsdbuff;
sgmnt_data_ptr_t csd, tsd;
jnlpool_addrs_ptr_t save_jnlpool, local_jnlpool;
replpool_identifier replpool_id;
unsigned int full_len; /* for REPL_INST_AVAILABLE */
gd_id replfile_gdid, *tmp_gdid;
boolean_t need_jnlpool_setup;
struct sembuf sop[3];
struct stat stat_buf;
union semun semarg;
struct semid_ds semstat;
struct shmid_ds shmstat;
struct statvfs dbvfs;
uint4 fbwsize, sopcnt;
uint4 max_hrtbt_delta;
boolean_t sem_timedout, *sem_timedoutp = NULL,
sem_stacktrace_time, *sem_stacktrace_timep = NULL,
indefinite_wait = TRUE;
unix_db_info *udi;
char now_running[MAX_REL_NAME];
int err_ret, init_status;
gtm_uint64_t sec_size, mmap_sz;
semwait_status_t retstat;
struct perm_diag_data pdd;
boolean_t bypassed_ftok = FALSE, bypassed_access = FALSE, dummy_ftok_counter_halted,
ftok_counter_halted, access_counter_halted, incr_cnt;
int jnl_buffer_size;
char s[JNLBUFFUPDAPNDX_SIZE]; /* JNLBUFFUPDAPNDX_SIZE is defined in jnl.h */
char *syscall;
void *mmapaddr;
int ret, secshrstat;
boolean_t crypt_warning;
gd_region *baseDBreg;
sgmnt_addrs *baseDBcsa;
node_local_ptr_t baseDBnl;
# ifdef DEBUG
int i;
char *ptr;
# endif
DCL_THREADGBL_ACCESS;
SETUP_THREADGBL_ACCESS;
ESTABLISH_NOUNWIND(dbinit_ch);
assert(INTRPT_IN_GVCST_INIT == intrpt_ok_state); /* we better be called from gvcst_init */
read_only = reg->read_only;
udi = FILE_INFO(reg);
tsd = udi->fd_opened_with_o_direct
? (sgmnt_data_ptr_t)(TREF(dio_buff)).aligned : &tsdbuff; /* If O_DIRECT, use aligned buffer */
memset(machine_name, 0, SIZEOF(machine_name));
csa = &udi->s_addrs;
assert(!mutex_per_process_init_pid || mutex_per_process_init_pid == process_id);
if (!mutex_per_process_init_pid)
mutex_per_process_init();
if (GETHOSTNAME(machine_name, MAX_MCNAMELEN, gethostname_res))
RTS_ERROR(VARLSTCNT(5) ERR_TEXT, 2, LEN_AND_LIT("Unable to get the hostname"), errno);
if (WBTEST_ENABLED(WBTEST_TAMPER_HOSTNAME))
STRCPY(machine_name, "s_i_l_l_y");
assert(strlen(machine_name) < MAX_MCNAMELEN);
assert(NULL == csa->hdr); /* dbinit_ch relies on this to unmap the db (if mm) */
assert((NULL == csa->db_addrs[0]) && (NULL == csa->db_addrs[1]));
assert((NULL == csa->mlkctl) && (0 == csa->mlkctl_len));
reg->opening = TRUE;
assert(0 <= udi->fd); /* database file must have been already opened by "dbfilopn" done from "gvcst_init" */
FSTAT_FILE(udi->fd, &stat_buf, stat_res); /* get the stats for the database file */
if (-1 == stat_res)
RTS_ERROR(VARLSTCNT(5) ERR_DBFILERR, 2, DB_LEN_STR(reg), errno);
/* Setup new group and permissions if indicated by the security rules. */
if (!gtm_permissions(&stat_buf, &user_id, &group_id, &perm, PERM_IPC, &pdd))
{
SEND_MSG(VARLSTCNT(6 + PERMGENDIAG_ARG_COUNT)
ERR_PERMGENFAIL, 4, RTS_ERROR_STRING("ipc resources"), RTS_ERROR_STRING(udi->fn),
PERMGENDIAG_ARGS(pdd));
RTS_ERROR(VARLSTCNT(6 + PERMGENDIAG_ARG_COUNT)
ERR_PERMGENFAIL, 4, RTS_ERROR_STRING("ipc resources"), RTS_ERROR_STRING(udi->fn),
PERMGENDIAG_ARGS(pdd));
}
/* if the process has standalone access, it will have udi->grabbed_access_sem set to TRUE at
* this point. Note that down in a local variable as the udi->grabbed_access_sem will be set
* to TRUE even for non-standalone access below and hence we can't rely on that later to determine if the process had
* standalone access or not when it entered this function.
*/
have_standalone_access = udi->grabbed_access_sem;
init_status = 0;
crypt_warning = TREF(mu_set_file_noencryptable);
udi->shm_deleted = udi->sem_deleted = FALSE;
if (!have_standalone_access)
{
gld_do_crypt_init = (IS_ENCRYPTED(reg->dyn.addr->is_encrypted) && !IS_LKE_IMAGE);
assert(!TO_BE_ENCRYPTED(reg->dyn.addr->is_encrypted));
INIT_PROC_ENCRYPTION_IF_NEEDED(gld_do_crypt_init, init_status); /* heavyweight so do it before ftok */
max_hrtbt_delta = TREF(dbinit_max_delta_secs);
indefinite_wait = (INDEFINITE_WAIT_ON_EAGAIN == max_hrtbt_delta);
if (!indefinite_wait)
{
START_SEM_TIMERS(sem_stacktrace_time, sem_timedout, max_hrtbt_delta);
sem_timedoutp = &sem_timedout;
sem_stacktrace_timep = &sem_stacktrace_time;
}
/* If the header is uninitalized we assume that mumps_can_bypass is TRUE. After we read the header to confirm our
* assumption. If we turn out to be wrong, we error out.
*/
bypassed_ftok = ok_to_bypass;
if (!ftok_sem_get2(reg, sem_stacktrace_timep, sem_timedoutp, &retstat, &bypassed_ftok, &ftok_counter_halted, TRUE))
ISSUE_SEMWAIT_ERROR((&retstat), reg, udi, "ftok");
assert(ok_to_bypass || !bypassed_ftok);
assert(udi->grabbed_ftok_sem || bypassed_ftok);
if (bypassed_ftok)
SEND_MSG(VARLSTCNT(4) ERR_TEXT, 2, LEN_AND_LIT("FTOK bypassed at database initialization"));
/* At this point we have ftok_semid semaphore based on ftok key (exception is if "bypassed_ftok" is TRUE).
* Any ftok conflicted region will block at this point. For example, if a.dat and b.dat both have same ftok
* and process A tries to open or close a.dat and process B tries to open or close b.dat, even though the
* database accesses don't conflict, the first one to control the ftok semaphore blocks (makes wait) the other(s).
*/
READ_DB_FILE_HEADER(reg, tsd, err_ret); /* file already opened by "dbfilopn" done from "gvcst_init" */
RETURN_IF_ERROR(err_ret, err_ret, indefinite_wait, sem_stacktrace_time, sem_timedout);
DO_BADDBVER_CHK(reg, tsd); /* need to do BADDBVER check before de-referencing shmid and semid from file header
* as they could be at different offsets if the database is V4-format */
db_do_crypt_init = (USES_ENCRYPTION(tsd->is_encrypted) && !IS_LKE_IMAGE);
if (gld_do_crypt_init != db_do_crypt_init)
{ /* Encryption setting different between global directory and database file header */
if (db_do_crypt_init)
{ /* Encryption is turned on in the file header. Need to do encryption initialization. Release ftok
* as initialization is heavy-weight. Decrement counter so later increment is correct.
*/
assert(udi->counter_ftok_incremented == !ftok_counter_halted);
/* If we are going to do a "ftok_sem_release", do not decrement the counter that was
* potentially incremented in the previous call to "ftok_sem_get2". Hence the 2nd parameter FALSE.
*/
if (!bypassed_ftok && !ftok_sem_release(reg, FALSE, FALSE))
RTS_ERROR(VARLSTCNT(4) ERR_DBFILERR, 2, DB_LEN_STR(reg));
INIT_PROC_ENCRYPTION_IF_NEEDED(db_do_crypt_init, init_status); /* redo initialization */
bypassed_ftok = ok_to_bypass;
if (!indefinite_wait)
{ /* restart timer to reflect time lost in encryption initialization */
CANCEL_SEM_TIMERS(sem_stacktrace_time, sem_timedout);
START_SEM_TIMERS(sem_stacktrace_time, sem_timedout, max_hrtbt_delta);
}
/* Since this is the second call to "ftok_sem_get2", do not increment counter.
* Hence FALSE as last parameter.
*/
if (!ftok_sem_get2(reg, sem_stacktrace_timep, sem_timedoutp, &retstat, &bypassed_ftok,
&dummy_ftok_counter_halted, FALSE))
ISSUE_SEMWAIT_ERROR((&retstat), reg, udi, "ftok");
assert(ok_to_bypass || !bypassed_ftok);
assert(!udi->counter_ftok_incremented);
udi->counter_ftok_incremented = !ftok_counter_halted; /* restore to first "ftok_sem_get2" call */
assert(udi->grabbed_ftok_sem || bypassed_ftok);
if (bypassed_ftok)
SEND_MSG(VARLSTCNT(4) ERR_TEXT, 2,
LEN_AND_LIT("bypassed at database encryption initialization"));
/* Re-read now possibly stale file header and redo the above based on the new header info */
READ_DB_FILE_HEADER(reg, tsd, err_ret);
RETURN_IF_ERROR(err_ret, err_ret, indefinite_wait, sem_stacktrace_time, sem_timedout);
DO_BADDBVER_CHK(reg, tsd); /* need to do BADDBVER check before de-referencing shmid and semid from
* file header as they could be at different offsets if the database is
* V4-format
*/
db_do_crypt_init = (USES_ENCRYPTION(tsd->is_encrypted) && !IS_LKE_IMAGE);
} /* else encryption is turned off in the file header. Continue as-is. Any encryption initialization done
* before is discarded
*/
}
if (mu_reorg_encrypt_in_prog)
INIT_DB_ENCRYPTION_IF_NEEDED(db_do_crypt_init, init_status, reg, csa, tsd, crypt_warning);
else
DO_ERR_PROC_ENCRYPTION_IF_NEEDED(reg, db_do_crypt_init, init_status, crypt_warning);
if (WBTEST_ENABLED(WBTEST_HOLD_ONTO_FTOKSEM_IN_DBINIT))
{
DBGFPF((stderr, "Holding the ftok semaphore.. Sleeping for 30 seconds\n"));
LONG_SLEEP(30);
DBGFPF((stderr, "30 second sleep exhausted.. continuing with rest of db_init..\n"));
}
access_counter_halted = FALSE;
/* This loop is primarily to take care of the case where udi->semid is non-zero in the file header and did exist
* when we read the file header but was concurrently deleted by a process holding standalone access on the database
* file (that does not hold the ftok semaphore) e.g. "db_ipcs_reset". We do not expect the semaphore to be deleted
* more than once because for another delete to happen, the deleting process must first open the database and
* for that it needs to go through "mu_rndwn_file"/"db_init" which needs the ftok lock that we currently hold.
* Note that it is possible we don't hold the ftok lock (e.g. DSE/LKE) but in that case, any errors cause us
* to retry in the caller ("gvcst_init") where the final retry is always with holding the ftok lock.
*/
for (loopcnt = 0; MAX_ACCESS_SEM_RETRIES > loopcnt; loopcnt++)
{
CSD2UDI(tsd, udi); /* sets udi->semid/shmid/sem_ctime/shm_ctime from file header */
/* We did not create a new ipc resource */
udi->sem_created = udi->shm_created = FALSE;
/* In the below code, use RETURN_IF_BYPASSED macro to retry the "db_init" (with "ok_to_bypass" == FALSE)
* if ever we are about to issue an error or create a sem/shm, all of which should happen only when
* someone has the ftok lock (i.e. have not bypassed that part above).
*/
if (INVALID_SEMID == udi->semid)
{ /* Access control semaphore does not exist. Create one. But if we have bypassed the ftok lock,
* then return (sem/shm can only be created by someone with the ftok lock).
*/
RETURN_IF_BYPASSED(bypassed_ftok, indefinite_wait, sem_stacktrace_time, sem_timedout);
if (!bypassed_ftok)
INIT_DB_ENCRYPTION_IF_NEEDED(db_do_crypt_init, init_status, reg, csa, tsd, crypt_warning);
if (0 != udi->gt_sem_ctime || INVALID_SHMID != udi->shmid || 0 != udi->gt_shm_ctime)
{ /* We must have somthing wrong in protocol or, code, if this happens. */
assert(FALSE);
PRINT_CRASH_MESSAGE(0, tsd, ERR_TEXT, 2, LEN_AND_STR(REQRUNDOWN_TEXT));
}
/* Create new semaphore using IPC_PRIVATE. System guarantees a unique id. */
if (-1 == (udi->semid = semget(IPC_PRIVATE, FTOK_SEM_PER_ID, RWDALL | IPC_CREAT)))
{
udi->semid = INVALID_SEMID;
RTS_ERROR(VARLSTCNT(9) ERR_DBFILERR, 2, DB_LEN_STR(reg),
ERR_TEXT, 2, LEN_AND_LIT("Error with database control semget"), errno);
}
udi->shmid = INVALID_SHMID; /* reset shmid so dbinit_ch does not get confused in case we go there */
udi->sem_created = TRUE;
udi->shm_created = !tsd->read_only;
/* change group and permissions */
semarg.buf = &semstat;
if (-1 == semctl(udi->semid, FTOK_SEM_PER_ID - 1, IPC_STAT, semarg))
RTS_ERROR(VARLSTCNT(9) ERR_DBFILERR, 2, DB_LEN_STR(reg),
ERR_TEXT, 2, LEN_AND_LIT("Error with database control semctl IPC_STAT1"), errno);
if ((INVALID_UID != user_id) && (user_id != semstat.sem_perm.uid))
{
semstat.sem_perm.uid = user_id;
need_semctl = TRUE;
}
if ((INVALID_GID != group_id) && (group_id != semstat.sem_perm.gid))
{
semstat.sem_perm.gid = group_id;
need_semctl = TRUE;
}
if (semstat.sem_perm.mode != perm)
{
semstat.sem_perm.mode = perm;
need_semctl = TRUE;
}
if (need_semctl && (-1 == semctl(udi->semid, FTOK_SEM_PER_ID - 1, IPC_SET, semarg)))
RTS_ERROR(VARLSTCNT(9) ERR_DBFILERR, 2, DB_LEN_STR(reg),
ERR_TEXT, 2, LEN_AND_LIT("Error with database control semctl IPC_SET"), errno);
SET_GTM_ID_SEM(udi->semid, status);
if (-1 == status)
RTS_ERROR(VARLSTCNT(9) ERR_DBFILERR, 2, DB_LEN_STR(reg),
ERR_TEXT, 2, LEN_AND_LIT("Error with database control semctl SETVAL"), errno);
/* WARNING: Because SETVAL changes sem_ctime, we must NOT do any SETVAL after this one; code here
* and elsewhere uses IPC_STAT to get sem_ctime and relies on sem_ctime as the creation time of the
* semaphore.
*/
semarg.buf = &semstat;
if (-1 == semctl(udi->semid, FTOK_SEM_PER_ID - 1, IPC_STAT, semarg))
RTS_ERROR(VARLSTCNT(9) ERR_DBFILERR, 2, DB_LEN_STR(reg),
ERR_TEXT, 2, LEN_AND_LIT("Error with database control semctl IPC_STAT2"), errno);
tsd->gt_sem_ctime.ctime = udi->gt_sem_ctime = semarg.buf->sem_ctime;
} else
{ /* "semid" already exists. Need to lock it. Before that do sanity check on "semid" and "shmid" */
if (INVALID_SHMID != udi->shmid)
{
if (WBTEST_ENABLED(WBTEST_HOLD_FTOK_UNTIL_BYPASS))
{
if ((4 * DB_COUNTER_SEM_INCR) == semctl(udi->ftok_semid, DB_COUNTER_SEM, GETVAL))
{ /* We are bypasser */
DBGFPF((stderr, "Waiting for all processes to quit.\n"));
while (1 < semctl(udi->ftok_semid, DB_COUNTER_SEM, GETVAL))
LONG_SLEEP(1);
}
}
if (-1 == shmctl(udi->shmid, IPC_STAT, &shmstat))
{
RETURN_IF_BYPASSED(bypassed_ftok, indefinite_wait, sem_stacktrace_time, \
sem_timedout);
if (((MAX_ACCESS_SEM_RETRIES - 1) == loopcnt) || !(SHM_REMOVED(errno)))
PRINT_CRASH_MESSAGE(1, tsd, ERR_TEXT, 2,
LEN_AND_LIT("Error with database control shmctl"),
errno);
/* else */
READ_DB_FILE_HEADER(reg, tsd, err_ret);
RETURN_IF_ERROR(err_ret, err_ret, indefinite_wait,
sem_stacktrace_time, sem_timedout);
continue;
} else if (shmstat.shm_ctime != tsd->gt_shm_ctime.ctime)
{
RETURN_IF_BYPASSED(bypassed_ftok, indefinite_wait, sem_stacktrace_time, \
sem_timedout);
GTM_ATTACH_SHM_AND_CHECK_VERS(vermismatch, shm_setup_ok);
if (vermismatch)
{
GTM_VERMISMATCH_ERROR;
} else
{
PRINT_CRASH_MESSAGE(0, tsd, ERR_TEXT, 2,
LEN_AND_LIT("IPC creation time indicates a probable prior crash"));
}
}
semarg.buf = &semstat;
if (-1 == semctl(udi->semid, DB_CONTROL_SEM, IPC_STAT, semarg))
{ /* file header has valid semid but semaphore does not exist */
RETURN_IF_BYPASSED(bypassed_ftok, indefinite_wait, sem_stacktrace_time, \
sem_timedout);
PRINT_CRASH_MESSAGE(1, tsd, ERR_TEXT, 2,
LEN_AND_LIT("Error with database control semaphore (IPC_STAT)"), errno);
} else if (semarg.buf->sem_ctime != tsd->gt_sem_ctime.ctime)
{
RETURN_IF_BYPASSED(bypassed_ftok, indefinite_wait, sem_stacktrace_time, \
sem_timedout);
GTM_ATTACH_SHM_AND_CHECK_VERS(vermismatch, shm_setup_ok);
if (vermismatch)
{
GTM_VERMISMATCH_ERROR;
} else
{
PRINT_CRASH_MESSAGE(0, tsd, ERR_TEXT, 2,
LEN_AND_LIT("IPC creation time indicates a probable prior crash"));
}
}
} else
{ /* else "shmid" is NOT valid. This is possible if -
* (a) Another process is holding the access control semaphore for a longer duration of time
* but does NOT have the shared memory setup (MUPIP INTEG -FILE or MUPIP RESTORE).
*
* (b) If a process (like in (a)) were kill -15ed or -9ed and hence did not get a chance to
* do db_ipcs_reset which resets "semid"/"shmid" field in the file header to INVALID.
*
* In either case, try grabbing the semaphore. If not, wait (depending on the user specified
* wait time). Eventually, we will either get hold of the semaphore OR will error out.
*/
RETURN_IF_BYPASSED(bypassed_ftok, indefinite_wait, sem_stacktrace_time, sem_timedout);
udi->shm_created = !tsd->read_only; /* Need to create shared memory */
}
}
incr_cnt = !read_only;
/* We already have ftok semaphore of this region, so all we need is the access control semaphore */
SET_GTM_SOP_ARRAY(sop, sopcnt, incr_cnt, (SEM_UNDO | IPC_NOWAIT));
SEMOP(udi->semid, sop, sopcnt, status, NO_WAIT);
if (-1 != status)
break;
save_errno = errno;
assert(!udi->sem_created); /* If we created the semaphore, we should be able to do the semop */
if ((EAGAIN == save_errno) || (ERANGE == save_errno))
{
if ((EAGAIN == save_errno) && (NO_SEMWAIT_ON_EAGAIN == TREF(dbinit_max_delta_secs)))
{
sem_pid = semctl(udi->semid, DB_CONTROL_SEM, GETPID);
if (-1 != sem_pid)
{
RETURN_IF_BYPASSED(bypassed_ftok, indefinite_wait, sem_stacktrace_time, \
sem_timedout);
RTS_ERROR(VARLSTCNT(13) ERR_DBFILERR, 2, DB_LEN_STR(reg),
ERR_SEMWT2LONG, 7, process_id, 0, LEN_AND_LIT("access control"),
DB_LEN_STR(reg), sem_pid);
} else
{
save_errno = errno;
RETURN_IF_BYPASSED(bypassed_ftok, indefinite_wait, sem_stacktrace_time, \
sem_timedout);
if (!SEM_REMOVED(save_errno))
RTS_ERROR(VARLSTCNT(12) ERR_CRITSEMFAIL, 2, DB_LEN_STR(reg),
ERR_SYSCALL, 5, RTS_ERROR_LITERAL("semop()"), CALLFROM,
save_errno);
}
} else
{
bypassed_access = ok_to_bypass;
semop_success = do_blocking_semop(udi->semid, gtm_access_sem, sem_stacktrace_timep,
sem_timedoutp, &retstat, reg,
&bypassed_access, &access_counter_halted, TRUE);
assert(ok_to_bypass || !bypassed_access);
if (!semop_success)
{
RETURN_IF_BYPASSED(bypassed_ftok, indefinite_wait, sem_stacktrace_time, \
sem_timedout);
if (!SEM_REMOVED(retstat.save_errno))
ISSUE_SEMWAIT_ERROR((&retstat), reg, udi, "access control");
save_errno = retstat.save_errno;
} else
{
if (bypassed_access)
SEND_MSG(VARLSTCNT(4) ERR_TEXT, 2,
LEN_AND_LIT("Access control bypassed at init"));
save_errno = status = SS_NORMAL;
incr_cnt = (incr_cnt && !access_counter_halted);
break;
}
}
} else if (!SEM_REMOVED(save_errno))
{
RETURN_IF_BYPASSED(bypassed_ftok, indefinite_wait, sem_stacktrace_time, sem_timedout);
RTS_ERROR(VARLSTCNT(12) ERR_CRITSEMFAIL, 2, DB_LEN_STR(reg), ERR_SYSCALL, 5,
RTS_ERROR_LITERAL("semop()"), CALLFROM, save_errno);
}
assert(SEM_REMOVED(save_errno));
if ((MAX_ACCESS_SEM_RETRIES - 1) == loopcnt)
RTS_ERROR(VARLSTCNT(12) ERR_CRITSEMFAIL, 2, DB_LEN_STR(reg), ERR_SYSCALL, 5,
RTS_ERROR_LITERAL("semop()"), CALLFROM, save_errno);
READ_DB_FILE_HEADER(reg, tsd, err_ret);
RETURN_IF_ERROR(err_ret, err_ret, indefinite_wait, sem_stacktrace_time, sem_timedout);
}
assert((-1 != status) || bypassed_access);
if (!indefinite_wait)
CANCEL_SEM_TIMERS(sem_stacktrace_time, sem_timedout);
if (!bypassed_access)
{
udi->grabbed_access_sem = TRUE;
/* Now that we have the access control semaphore, re-read the file header so we have uptodate information
* in case some of the fields (like access method) were modified concurrently by MUPIP SET -FILE.
*/
READ_DB_FILE_HEADER(reg, tsd, err_ret);
RETURN_IF_ERROR(err_ret, err_ret, indefinite_wait, sem_stacktrace_time, sem_timedout);
UDI2CSD(udi, tsd); /* Since we read the file header again, tsd->semid/shmid and corresponding ctime fields
* will not be uptodate. Refresh it with udi copies as they are more uptodate.
*/
}
udi->counter_acc_incremented = incr_cnt;
} else
{ /* for have_standalone_access we were already in "mu_rndwn_file" and got "semid" semaphore. Since mu_rndwn_file
* would have gotten "ftok" semaphore before acquiring the access control semaphore, no need to get the "ftok"
* semaphore as well.
*/
incr_cnt = !read_only;
ftok_counter_halted = FALSE;
access_counter_halted = FALSE;
READ_DB_FILE_HEADER(reg, tsd, err_ret); /* file already opened by "dbfilopn" done from "gvcst_init" */
RETURN_IF_ERROR(err_ret, err_ret, indefinite_wait, sem_stacktrace_time, sem_timedout);
db_do_crypt_init = (USES_ENCRYPTION(tsd->is_encrypted) && !IS_LKE_IMAGE);
INIT_PROC_ENCRYPTION_IF_NEEDED(db_do_crypt_init, init_status);
INIT_DB_ENCRYPTION_IF_NEEDED(db_do_crypt_init, init_status, reg, csa, tsd, crypt_warning);
CSD2UDI(tsd, udi);
/* Make sure "mu_rndwn_file" has created semaphore for standalone access */
assertpro((INVALID_SEMID != udi->semid) && (0 != udi->gt_sem_ctime));
/* Make sure "mu_rndwn_file" has reset shared memory. In pro, just clear it and proceed. */
assert((INVALID_SHMID == udi->shmid) && (0 == udi->gt_shm_ctime));
/* In pro, just clear it and proceed */
udi->shmid = INVALID_SHMID; /* reset shmid so dbinit_ch does not get confused in case we go there */
udi->sem_created = TRUE;
udi->shm_created = !tsd->read_only;
}
assert(udi->grabbed_access_sem || bypassed_access);
if (udi->fd_opened_with_o_direct)
{ /* "tsd" points to dio_buff.aligned, a global variable buffer that will likely be reused by other functions
* inside "db_init" (e.g. "recover_truncate" invoking "db_write_eof_block"). Point it back to tsdbuff
* after copying the contents as we need access to "tsd" even after the "recover_truncate" invocation.
*/
assert(tsd == (sgmnt_data_ptr_t)(TREF(dio_buff)).aligned);
memcpy(&tsdbuff, (sgmnt_data_ptr_t)(TREF(dio_buff)).aligned, SGMNT_HDR_LEN);
tsd = &tsdbuff;
}
DO_DB_HDR_CHECK(reg, tsd); /* Basic sanity check on the file header fields */
if (WBTEST_ENABLED(WBTEST_HOLD_ONTO_ACCSEM_IN_DBINIT))
{
DBGFPF((stderr, "Holding the access control semaphore.. Sleeping for 30 seconds\n"));
LONG_SLEEP(30);
DBGFPF((stderr, "30 second sleep exhausted.. continuing with rest of db_init..\n"));
}
if (WBTEST_ENABLED(WBTEST_HOLD_FTOK_UNTIL_BYPASS))
{
if ((3 * DB_COUNTER_SEM_INCR) == semctl(udi->ftok_semid, DB_COUNTER_SEM, GETVAL))
{ /* We are ftok semaphore holder */
DBGFPF((stderr, "Holding the ftok semaphore until a new process comes along.\n"));
while (3 == semctl(udi->ftok_semid, DB_COUNTER_SEM, GETVAL))
LONG_SLEEP(1);
}
}
/* Now that the access control lock is obtained and file header passed all sanity checks, update the acc_meth of the
* region from the one in the file header (in case they are different). This way, any later code that relies on the
* acc_meth dereferenced from the region will work correctly. Instead of checking if they are different, do the assignment
* unconditionally
*/
reg->dyn.addr->acc_meth = tsd->acc_meth;
reg->dyn.addr->read_only = tsd->read_only;
reg->dyn.addr->full_blkwrt = tsd->write_fullblk;
COPY_AIO_SETTINGS(reg->dyn.addr, tsd); /* copy "asyncio" from tsd to reg->dyn.addr */
new_shm_ipc = udi->shm_created;
if (new_shm_ipc && !tsd->read_only)
{ /* Bypassers are not allowed to create shared memory so we don't end up with conflicting shared memories */
assert(!bypassed_ftok && !bypassed_access);
/* Since we are about to allocate new shared memory, if necessary, adjust the journal buffer size right now.
* Note that if the process setting up shared memory is a read-only process, then we might not flush updated
* jnl_buffer_size to the file header, which is fine because the value in shared memory is what all processes
* are looking at. If necessary, the next process to initialize shared memory will repeat the process of
* adjusting the jnl_buffer_size value.
*/
jnl_buffer_size = tsd->jnl_buffer_size;
if ((0 != jnl_buffer_size) && (jnl_buffer_size < JNL_BUFFER_MIN))
{
ROUND_UP_MIN_JNL_BUFF_SIZE(tsd->jnl_buffer_size, tsd);
SNPRINTF(s, JNLBUFFUPDAPNDX_SIZE, JNLBUFFUPDAPNDX, JNL_BUFF_PORT_MIN(tsd), JNL_BUFFER_MAX);
SEND_MSG(VARLSTCNT(10) ERR_JNLBUFFREGUPD, 4, REG_LEN_STR(reg),
jnl_buffer_size, tsd->jnl_buffer_size, ERR_TEXT, 2, LEN_AND_STR(s));
}
dbsecspc(reg, tsd, &sec_size); /* Find db segment size */
/* Create new shared memory using IPC_PRIVATE. System guarantees a unique id */
GTM_WHITE_BOX_TEST(WBTEST_FAIL_ON_SHMGET, sec_size, GTM_UINT64_MAX);
if (-1 == (status_l = udi->shmid = shmget(IPC_PRIVATE, sec_size, RWDALL | IPC_CREAT)))
{
udi->shmid = (int)INVALID_SHMID;
status_l = INVALID_SHMID;
RTS_ERROR(VARLSTCNT(9) ERR_DBFILERR, 2, DB_LEN_STR(reg),
ERR_TEXT, 2, LEN_AND_LIT("Error with database shmget"), errno);
}
tsd->shmid = udi->shmid;
if (-1 == shmctl(udi->shmid, IPC_STAT, &shmstat))
RTS_ERROR(VARLSTCNT(9) ERR_DBFILERR, 2, DB_LEN_STR(reg),
ERR_TEXT, 2, LEN_AND_LIT("Error with database control shmctl IPC_STAT1"), errno);
/* change uid, group-id and permissions if needed */
need_shmctl = FALSE;
if ((INVALID_UID != user_id) && (user_id != shmstat.shm_perm.uid))
{
shmstat.shm_perm.uid = user_id;
need_shmctl = TRUE;
}
if ((INVALID_GID != group_id) && (group_id != shmstat.shm_perm.gid))
{
shmstat.shm_perm.gid = group_id;
need_shmctl = TRUE;
}
if (shmstat.shm_perm.mode != perm)
{
shmstat.shm_perm.mode = perm;
need_shmctl = TRUE;
}
if (need_shmctl && (-1 == shmctl(udi->shmid, IPC_SET, &shmstat)))
RTS_ERROR(VARLSTCNT(9) ERR_DBFILERR, 2, DB_LEN_STR(reg),
ERR_TEXT, 2, LEN_AND_LIT("Error with database control shmctl IPC_SET"), errno);
/* Warning: We must read the shm_ctime using IPC_STAT after IPC_SET, which changes it.
* We must NOT do any more IPC_SET or SETVAL after this. Our design is to use
* shm_ctime as creation time of shared memory and store it in file header.
*/
if (-1 == shmctl(udi->shmid, IPC_STAT, &shmstat))
RTS_ERROR(VARLSTCNT(9) ERR_DBFILERR, 2, DB_LEN_STR(reg),
ERR_TEXT, 2, LEN_AND_LIT("Error with database control shmctl IPC_STAT2"), errno);
tsd->gt_shm_ctime.ctime = udi->gt_shm_ctime = shmstat.shm_ctime;
GTM_ATTACH_SHM;
shm_setup_ok = TRUE;
} else if (tsd->read_only)
{
dbsecspc(reg, tsd, &sec_size); /* Find db segment size */
csa->db_addrs[0] = malloc(ROUND_UP2(sec_size, OS_PAGE_SIZE) + OS_PAGE_SIZE);
/* Init the space to zero; the system assumes shared memory gets init'd to zero, funny errors without this */
memset(csa->db_addrs[0], 0, ROUND_UP2(sec_size, OS_PAGE_SIZE) + OS_PAGE_SIZE);
/* Move the pointer above so it falls on a cacheline boundary;
* since this segment will be needed during all of process execution
* we don't need to record the original place for cleanup */
csa->db_addrs[0] = (sm_uc_ptr_t)((UINTPTR_T)csa->db_addrs[0] + OS_PAGE_SIZE)
- ((UINTPTR_T)csa->db_addrs[0] % OS_PAGE_SIZE);
csa->nl = (node_local_ptr_t)csa->db_addrs[0];
read_only = TRUE;
reg->read_only = TRUE;
csa->read_write = FALSE;
shm_setup_ok = TRUE;
incr_cnt = 0;
} else
{
GTM_ATTACH_SHM_AND_CHECK_VERS(vermismatch, shm_setup_ok);
if (vermismatch)
{
GTM_VERMISMATCH_ERROR;
} else if (!shm_setup_ok)
{
PRINT_CRASH_MESSAGE(0, tsd, ERR_TEXT, 2, LEN_AND_LIT("shared memory is invalid"));
}
/* Compare file header fields against cached values. Restore as necessary to fix shared memory layout calculation */
if (IS_DSE_IMAGE)
{
DSE_VERIFY_AND_RESTORE(csa, tsd, acc_meth);
DSE_VERIFY_AND_RESTORE(csa, tsd, lock_space_size);
DSE_VERIFY_AND_RESTORE(csa, tsd, jnl_buffer_size);
DSE_VERIFY_AND_RESTORE(csa, tsd, blk_size);
}
}
csa->critical = (CRIT_PTR_T)(csa->db_addrs[0] + NODE_LOCAL_SIZE);
assert(((INTPTR_T)csa->critical & 0xf) == 0); /* critical should be 16-byte aligned */
# ifdef CACHELINE_SIZE
assert(0 == ((INTPTR_T)csa->critical & (CACHELINE_SIZE - 1)));
# endif
/* Note: Here we check jnl_state from database file; its value cannot change without stand-alone access.
* The jnl_buff should be initialized irrespective of read/write process
*/
JNL_INIT(csa, reg, tsd);
csa->shmpool_buffer = (shmpool_buff_hdr_ptr_t)(csa->db_addrs[0] + NODE_LOCAL_SPACE(tsd) + JNL_SHARE_SIZE(tsd));
/* Initialize memory for snapshot context */
if (NULL == csa->ss_ctx) /* May have been allocated if opened/closed/opened */
csa->ss_ctx = malloc(SIZEOF(snapshot_context_t));
DEFAULT_INIT_SS_CTX((SS_CTX_CAST(csa->ss_ctx)));
csa->mlkctl = (struct mlk_ctldata_struct *) ((sm_uc_ptr_t)csa->shmpool_buffer + SHMPOOL_SECTION_SIZE);
csa->mlkctl_len = LOCK_SPACE_SIZE(tsd);
csa->total_blks = tsd->trans_hist.total_blks; /* For test to see if file has extended */
cnl = csa->nl;
if (new_shm_ipc)
{
# ifdef DEBUG
/* We allocated shared storage -- "shmget" ensures it is null initialized. Assert that. */
ptr = (char *)cnl;
for (i = 0; i < SIZEOF(*cnl); i++)
assert('\0' == ptr[i]);
# endif
cnl->sec_size = sec_size; /* Set the shared memory size */
if (JNL_ALLOWED(csa))
{ /* initialize jb->cycle to a value different from initial value of jpc->cycle (0). although this is not
* necessary right now, in the future, the plan is to change "jnl_ensure_open" to only do a cycle mismatch
* check in order to determine whether to call jnl_file_open() or not. this is in preparation for that.
*/
csa->jnl->jnl_buff->cycle = 1;
}
GTM_CACHE_INTO_SHM(csa, tsd);
}
is_bg = (dba_bg == tsd->acc_meth);
if (is_bg)
csd = csa->hdr = (sgmnt_data_ptr_t)((sm_uc_ptr_t)csa->mlkctl + csa->mlkctl_len + CACHE_CONTROL_SIZE(tsd));
else
{
FSTAT_FILE(udi->fd, &stat_buf, stat_res);
if (-1 == stat_res)
RTS_ERROR(VARLSTCNT(5) ERR_DBFILERR, 2, DB_LEN_STR(reg), errno);
mmap_sz = stat_buf.st_size - BLK_ZERO_OFF(tsd->start_vbn);
assert(0 < mmap_sz);
CHECK_LARGEFILE_MMAP(reg, mmap_sz); /* can issue rts_error MMFILETOOLARGE */
# ifdef _AIX
mmapaddr = shmat(udi->fd, 0, (read_only ? (SHM_MAP|SHM_RDONLY) : SHM_MAP));
# else
mmapaddr = MMAP_FD(udi->fd, mmap_sz, BLK_ZERO_OFF(tsd->start_vbn), read_only);
# endif
if (-1 == (INTPTR_T)mmapaddr)
{
RTS_ERROR(VARLSTCNT(12) ERR_DBFILERR, 2, DB_LEN_STR(reg),
ERR_SYSCALL, 5, LEN_AND_STR(MEM_MAP_SYSCALL), CALLFROM, errno);
}
# ifdef _AIX
csa->db_addrs[0] = (sm_uc_ptr_t)((sm_uc_ptr_t)mmapaddr + BLK_ZERO_OFF(tsd->start_vbn));
# else
csa->db_addrs[0] = mmapaddr;
# endif
csa->db_addrs[1] = (sm_uc_ptr_t)((sm_uc_ptr_t)csa->db_addrs[0] + mmap_sz - 1); /* '- 1' due to 0-based indexing */
assert(csa->db_addrs[1] > csa->db_addrs[0]);
csd = csa->hdr = (sgmnt_data_ptr_t)((sm_uc_ptr_t)csa->mlkctl + csa->mlkctl_len);
}
/* At this point, shm_setup_ok is TRUE so we are guaranteed that vermismatch is FALSE. Therefore, we can safely
* dereference cnl->glob_sec_init without worrying about whether or not it could be at a different offset than
* the current version. The only exception is DSE which can continue even after the VERMISMATCH error and hence
* can have shm_setup_ok set to FALSE at this point.
*/
if (shm_setup_ok && !cnl->glob_sec_init && !(bypassed_ftok || bypassed_access))
{
assert(udi->shm_created || tsd->read_only);
assert(new_shm_ipc || tsd->read_only);
assert(!vermismatch);
memcpy(csd, tsd, SIZEOF(sgmnt_data));
READ_DB_FILE_MASTERMAP(reg, csd);
if (csd->machine_name[0]) /* crash occurred */
{
if (0 != STRNCMP_STR(csd->machine_name, machine_name, MAX_MCNAMELEN)) /* crashed on some other node */
RTS_ERROR(VARLSTCNT(8) ERR_HOSTCONFLICT, 6, LEN_AND_STR(machine_name), DB_LEN_STR(reg),
LEN_AND_STR(csd->machine_name));
else
{
PRINT_CRASH_MESSAGE(0, csd, ERR_TEXT, 2,
LEN_AND_LIT("machine name in file header is non-null implying possible crash"));
}
}
if (is_bg)
{
cnl->cache_off = -CACHE_CONTROL_SIZE(csd);
db_csh_ini(csa);
bt_malloc(csa);
}
db_csh_ref(csa, TRUE);
shmpool_buff_init(reg);
SS_INFO_INIT(csa);
STRNCPY_STR(cnl->machine_name, machine_name, MAX_MCNAMELEN); /* machine name */
assert(MAX_REL_NAME > gtm_release_name_len);
memcpy(cnl->now_running, gtm_release_name, gtm_release_name_len + 1); /* GT.M release name */
memcpy(cnl->label, GDS_LABEL, GDS_LABEL_SZ - 1); /* GDS label */
memcpy(cnl->fname, reg->dyn.addr->fname, reg->dyn.addr->fname_len); /* database filename */
cnl->creation_date_time4 = csd->creation_time4;
cnl->highest_lbm_blk_changed = GDS_CREATE_BLK_MAX; /* set to invalid block number */
cnl->wcs_timers = -1;
cnl->nbb = BACKUP_NOT_IN_PROGRESS;
cnl->unique_id.uid = FILE_INFO(reg)->fileid; /* save what file we initialized this storage for */
/* save pointers in csa to access shared memory */
cnl->critical = (sm_off_t)((sm_uc_ptr_t)csa->critical - (sm_uc_ptr_t)cnl);
if (JNL_ALLOWED(csa))
cnl->jnl_buff = (sm_off_t)((sm_uc_ptr_t)csa->jnl->jnl_buff - (sm_uc_ptr_t)cnl);
cnl->shmpool_buffer = (sm_off_t)((sm_uc_ptr_t)csa->shmpool_buffer - (sm_uc_ptr_t)cnl);
if (is_bg)
/* Field is sm_off_t (4 bytes) so only in BG mode is this assurred to be 4 byte capable */
cnl->hdr = (sm_off_t)((sm_uc_ptr_t)csd - (sm_uc_ptr_t)cnl);
cnl->lock_addrs = (sm_off_t)((sm_uc_ptr_t)csa->mlkctl - (sm_uc_ptr_t)cnl);
if (!read_only || is_bg)
{
csd->trans_hist.early_tn = csd->trans_hist.curr_tn;
csd->max_update_array_size = csd->max_non_bm_update_array_size
= (int4)(ROUND_UP2(MAX_NON_BITMAP_UPDATE_ARRAY_SIZE(csd), UPDATE_ARRAY_ALIGN_SIZE));
csd->max_update_array_size += (int4)(ROUND_UP2(MAX_BITMAP_UPDATE_ARRAY_SIZE, UPDATE_ARRAY_ALIGN_SIZE));
/* add current db_csh counters into the cumulative counters and reset the current counters */
# define TAB_DB_CSH_ACCT_REC(COUNTER, DUMMY1, DUMMY2) \
csd->COUNTER.cumul_count += csd->COUNTER.curr_count; \
csd->COUNTER.curr_count = 0;
# include "tab_db_csh_acct_rec.h"
# undef TAB_DB_CSH_ACCT_REC
}
SET_TRACEABLE_VAR(cnl->wc_blocked, WC_UNBLOCK); /* Since we are creating shared memory, reset wc_blocked to 0 */
gvstats_rec_csd2cnl(csa); /* should be called before "db_auto_upgrade" */
reg->dyn.addr->ext_blk_count = csd->extension_size;
mlk_shr_init((sm_uc_ptr_t)csa->mlkctl, csd->lock_space_size, csa, (FALSE == read_only));
db_auto_upgrade(reg); /* should be called before "gtm_mutex_init" to ensure NUM_CRIT_ENTRY is nonzero */
DEBUG_ONLY(locknl = cnl;) /* for DEBUG_ONLY LOCK_HIST macro */
gtm_mutex_init(reg, NUM_CRIT_ENTRY(csd), FALSE);
DEBUG_ONLY(locknl = NULL;) /* restore "locknl" to default value */
if (read_only)
cnl->remove_shm = TRUE; /* gds_rundown can remove shmem if first process has read-only access */
if (FALSE == csd->multi_site_open)
{ /* first time database is opened after upgrading to a GTM version that supports multi-site
* replication
*/
csd->zqgblmod_seqno = 0;
csd->zqgblmod_tn = 0;
if (csd->pre_multisite_resync_seqno > csd->reg_seqno)
csd->pre_multisite_resync_seqno = csd->reg_seqno;
csd->multi_site_open = TRUE;
}
cnl->glob_sec_init = TRUE;
STAT_FILE((char *)cnl->fname, &stat_buf, stat_res);
if (-1 == stat_res)
{
save_errno = errno;
RTS_ERROR(VARLSTCNT(5) ERR_DBFILERR, 2, DB_LEN_STR(reg), save_errno);
}
set_gdid_from_stat(&cnl->unique_id.uid, &stat_buf);
recover_truncate(csa, csd, reg);
cnl->jnlpool_shmid = INVALID_SHMID;
assert(0 == cnl->statsdb_fname_len);
assert(0 == cnl->statsdb_cur_error);
assert(0 == cnl->statsdb_error_cycle);
cnl->statsdb_created = FALSE;
cnl->statsdb_rundown_clean = FALSE;
if (IS_STATSDB_REGNAME(reg))
{ /* Note that in case this region is a statsdb, its baseDBnl->statsdb_rundown_clean would have been set to
* FALSE at baseDB "db_init" time but it is possible the statsdb has been through "gds_rundown" and we
* are back in "db_init" for the same statsDB (e.g. VIEW "NOSTATSHARE" VIEW "STATSHARE" sequence). In that
* case, we need to reset the flag to FALSE. Hence the code below.
*/
STATSDBREG_TO_BASEDBREG(reg, baseDBreg);
assert(baseDBreg->open);
baseDBcsa = &FILE_INFO(baseDBreg)->s_addrs;
baseDBnl = baseDBcsa->nl;
baseDBnl->statsdb_rundown_clean = FALSE;
assert(csd->basedb_fname_len); /* should have been initialized for statsdb at "mucregini" time */
}
} else
{
if (STRNCMP_STR(cnl->machine_name, machine_name, MAX_MCNAMELEN)) /* machine names do not match */
{
if (cnl->machine_name[0])
RTS_ERROR(VARLSTCNT(8) ERR_HOSTCONFLICT, 6, LEN_AND_STR(machine_name), DB_LEN_STR(reg),
LEN_AND_STR(cnl->machine_name));
else
{
PRINT_CRASH_MESSAGE(0, csd, ERR_TEXT, 2,
LEN_AND_LIT("machine name in shared memory is non-null implying possible crash"));
}
}
/* Since nl is memset to 0 initially and then fname is copied over from gv_cur_region and since "fname" is
* guaranteed to not exceed MAX_FN_LEN, we should have a terminating '\0' at least at cnl->fname[MAX_FN_LEN]
*/
assert(cnl->fname[MAX_FN_LEN] == '\0'); /* Note: the first '\0' in cnl->fname can be much earlier */
/* Check whether cnl->fname exists. If not, then it is a serious condition. Error out. */
STAT_FILE((char *)cnl->fname, &stat_buf, stat_res);
if (-1 == stat_res)
{
save_errno = errno;
SEND_MSG(VARLSTCNT(13) ERR_REQRUNDOWN, 4, DB_LEN_STR(reg), LEN_AND_STR(cnl->machine_name),
ERR_DBNAMEMISMATCH, 4, DB_LEN_STR(reg), udi->shmid, cnl->fname, save_errno);
PRINT_CRASH_MESSAGE(3, cnl, ERR_DBNAMEMISMATCH, 4,
DB_LEN_STR(reg), udi->shmid, cnl->fname, save_errno);
}
/* Check whether cnl->fname and cnl->unique_id.uid are in sync. If not error out. */
if (FALSE == is_gdid_stat_identical(&cnl->unique_id.uid, &stat_buf))
{
SEND_MSG(VARLSTCNT(12) ERR_REQRUNDOWN, 4, DB_LEN_STR(reg), LEN_AND_STR(cnl->machine_name),
ERR_DBIDMISMATCH, 4, cnl->fname, DB_LEN_STR(reg), udi->shmid);
PRINT_CRASH_MESSAGE(2, cnl, ERR_DBIDMISMATCH, 4, cnl->fname, DB_LEN_STR(reg), udi->shmid);
}
/* Previously, we used to check for cnl->creation_date_time4 vs csd->creation_time4 and treat it as
* an id mismatch situation as well. But later it was determined that as long as the filename and the fileid
* match between the database file header and the copy in shared memory, there is no more matching that needs
* to be done. It is not possible for the user to create a situation where the filename/fileid matches but
* the creation time does not. The only way for this to happen is shared memory corruption in which case we
* have a much bigger problem to deal with -- 2011/03/30 --- nars.
*/
if (FALSE == is_gdid_gdid_identical(&FILE_INFO(reg)->fileid, &cnl->unique_id.uid))
{
SEND_MSG(VARLSTCNT(12) ERR_REQRUNDOWN, 4, DB_LEN_STR(reg), LEN_AND_STR(cnl->machine_name),
ERR_DBSHMNAMEDIFF, 4, DB_LEN_STR(reg), udi->shmid, cnl->fname);
PRINT_CRASH_MESSAGE(2, cnl, ERR_DBSHMNAMEDIFF, 4, DB_LEN_STR(reg), udi->shmid, cnl->fname);
}
/* If a regular Recover/Rollback created the shared memory and died (because of a user error or runtime error),
* any process that comes up after that should NOT touch the shared memory or database. The user should reissue
* Rollback/Recover command that will fix the state of the shared memory and bring the database back to a consistent
* state. Note that the reissue of a regular Rollback/Recover command will NOT hit this condition because it invokes
* mu_rndwn_file (STANDALONE) that removes the shared memory. The only case in which mu_rndwn_file does NOT remove
* shared memory is if it was invoked by an Online Rollback in which case the below check should be bypassed
*/
if (cnl->donotflush_dbjnl && !jgbl.onlnrlbk)
{
PRINT_CRASH_MESSAGE(0, cnl, ERR_TEXT, 2,
LEN_AND_LIT("mupip recover/rollback created shared memory. Needs MUPIP RUNDOWN"));
}
/* verify pointers from our calculation vs. the copy in shared memory */
if (cnl->critical != (sm_off_t)((sm_uc_ptr_t)csa->critical - (sm_uc_ptr_t)cnl))
{
PRINT_CRASH_MESSAGE(2, cnl, ERR_NLMISMATCHCALC, 4, LEN_AND_LIT("critical"),
(uint4)((sm_uc_ptr_t)csa->critical - (sm_uc_ptr_t)cnl), (uint4)cnl->critical);
}
if ((JNL_ALLOWED(csa)) &&
(cnl->jnl_buff != (sm_off_t)((sm_uc_ptr_t)csa->jnl->jnl_buff - (sm_uc_ptr_t)cnl)))
{
PRINT_CRASH_MESSAGE(2, cnl, ERR_NLMISMATCHCALC, 4, LEN_AND_LIT("journal buffer"),
(uint4)((sm_uc_ptr_t)csa->jnl->jnl_buff - (sm_uc_ptr_t)cnl), (uint4)cnl->jnl_buff);
}
if (cnl->shmpool_buffer != (sm_off_t)((sm_uc_ptr_t)csa->shmpool_buffer - (sm_uc_ptr_t)cnl))
{
PRINT_CRASH_MESSAGE(2, cnl, ERR_NLMISMATCHCALC, 4, LEN_AND_LIT("backup buffer"),
(uint4)((sm_uc_ptr_t)csa->shmpool_buffer - (sm_uc_ptr_t)cnl), (uint4)cnl->shmpool_buffer);
}
if ((is_bg) && (cnl->hdr != (sm_off_t)((sm_uc_ptr_t)csd - (sm_uc_ptr_t)cnl)))
{
PRINT_CRASH_MESSAGE(2, cnl, ERR_NLMISMATCHCALC, 4, LEN_AND_LIT("file header"),
(uint4)((sm_uc_ptr_t)csd - (sm_uc_ptr_t)cnl), (uint4)cnl->hdr);
}
if (cnl->lock_addrs != (sm_off_t)((sm_uc_ptr_t)csa->mlkctl - (sm_uc_ptr_t)cnl))
{
PRINT_CRASH_MESSAGE(2, cnl, ERR_NLMISMATCHCALC, 4, LEN_AND_LIT("lock address"),
(uint4)((sm_uc_ptr_t)csa->mlkctl - (sm_uc_ptr_t)cnl), (uint4)cnl->lock_addrs);
}
assert(!udi->shm_created);
if (is_bg)
db_csh_ini(csa);
}
/* If this is a source server, bind this database to the journal pool shmid & instance file name that the
* source server started with. Assert that jnlpool_init has already been done by the source server before
* it does db_init.
* In addition, if this is not a source server, but has done a "jnlpool_init" (in caller function "gvcst_init"),
* and the source server had shut down just before we got the access control lock in db_init(), we would have
* had to create db shm afresh. In that case, the source server would have left the jnlpool intact but db shm
* would have lost the jnlpool initialization that the source server did. So do it on behalf of the source
* server even though this is not a source server.
*/
need_jnlpool_setup = REPL_ALLOWED(csd) && is_src_server;
save_jnlpool = jnlpool;
if (need_jnlpool_setup)
assert(jnlpool && jnlpool->pool_init); /* only one jnlpool for source server */
else if (!is_src_server && pool_init && REPL_ALLOWED(csd) && gd_header && udi->shm_created
&& REPL_INST_AVAILABLE(csa->gd_ptr))
{ /* not source server but db shm created so check proper jnlpool */
status = filename_to_id(&replfile_gdid, replpool_id.instfilename); /* set by REPL_INST_AVAILABLE */
assertpro(SS_NORMAL == status);
if (jnlpool && jnlpool->pool_init)
{
tmp_gdid = &FILE_ID(jnlpool->jnlpool_dummy_reg);
if (!gdid_cmp(tmp_gdid, &replfile_gdid))
need_jnlpool_setup = TRUE; /* current jnlpool is for this region */
}
if (!need_jnlpool_setup)
{ /* need to find right jnlpool */
for (local_jnlpool = jnlpool_head; local_jnlpool; local_jnlpool = local_jnlpool->next)
{
if (local_jnlpool->pool_init)
{
tmp_gdid = &FILE_ID(jnlpool->jnlpool_dummy_reg);
if (!gdid_cmp(tmp_gdid, &replfile_gdid))
{
jnlpool = local_jnlpool;
need_jnlpool_setup = TRUE;
break;
}
}
}
}
}
if (need_jnlpool_setup)
{
assert((NULL != jnlpool) && (NULL != jnlpool->repl_inst_filehdr));
/* Note: cnl->replinstfilename is changed under control of the init/rundown semaphore only. */
assert('\0' != jnlpool->jnlpool_ctl->jnlpool_id.instfilename[0]);
replinst_mismatch = FALSE;
if ('\0' == cnl->replinstfilename[0])
STRCPY(cnl->replinstfilename, jnlpool->jnlpool_ctl->jnlpool_id.instfilename);
else if (STRCMP(cnl->replinstfilename, jnlpool->jnlpool_ctl->jnlpool_id.instfilename))
{
assert(!(jnlpool->pool_init && udi->shm_created));
replinst_mismatch = TRUE;
}
/* Note: cnl->jnlpool_shmid is changed under control of the init/rundown semaphore only. */
assert(INVALID_SHMID != jnlpool->repl_inst_filehdr->jnlpool_shmid);
if (INVALID_SHMID == cnl->jnlpool_shmid)
cnl->jnlpool_shmid = jnlpool->repl_inst_filehdr->jnlpool_shmid;
else if (cnl->jnlpool_shmid != jnlpool->repl_inst_filehdr->jnlpool_shmid)
{ /* shmid mismatch. Check if the shmid noted down in db filehdr is out-of-date.
* Possible if the jnlpool has since been deleted. If so, note the new one down.
* If not, then issue an error.
*/
assert(!(jnlpool->pool_init && udi->shm_created));
if (-1 == shmctl(cnl->jnlpool_shmid, IPC_STAT, &shmstat))
{
save_errno = errno;
if (SHM_REMOVED(save_errno))
{
replinst_mismatch = FALSE;
cnl->jnlpool_shmid = jnlpool->repl_inst_filehdr->jnlpool_shmid;
} else
replinst_mismatch = TRUE;
} else
replinst_mismatch = TRUE;
}
/* Replication instance file or jnlpool id mismatch. Issue error. */
if (replinst_mismatch)
{
assert(!(jnlpool->pool_init && udi->shm_created));
if (INVALID_SHMID == cnl->jnlpool_shmid)
RTS_ERROR(VARLSTCNT(4) ERR_REPLINSTNOSHM, 2, DB_LEN_STR(reg));
else
RTS_ERROR(VARLSTCNT(10) ERR_REPLINSTMISMTCH, 8,
LEN_AND_STR(jnlpool->jnlpool_ctl->jnlpool_id.instfilename),
jnlpool->repl_inst_filehdr->jnlpool_shmid, DB_LEN_STR(reg),
LEN_AND_STR(cnl->replinstfilename), cnl->jnlpool_shmid);
}
}
csa->root_search_cycle = cnl->root_search_cycle;
csa->onln_rlbk_cycle = cnl->onln_rlbk_cycle; /* take local copy of the current Online Rollback cycle */
csa->db_onln_rlbkd_cycle = cnl->db_onln_rlbkd_cycle; /* take local copy of the current Online Rollback mod cycle */
SYNC_RESERVEDDBFLAGS_REG_CSA_CSD(reg, csa, csd, cnl);
INITIALIZE_CSA_ENCR_PTR(csa, csd, udi, db_do_crypt_init, crypt_warning, bypassed_ftok); /* sets csa->encr_ptr */
/* Record ftok information as soon as shared memory set up is done */
if (!have_standalone_access && !bypassed_ftok)
FTOK_TRACE(csa, csd->trans_hist.curr_tn, ftok_ops_lock, process_id);
assert(!incr_cnt || !read_only);
if (incr_cnt)
{
if (!cnl->first_writer_seen)
{
cnl->first_writer_seen = TRUE;
cnl->remove_shm = FALSE;
}
if (!cnl->first_nonbypas_writer_seen && !bypassed_ftok && !bypassed_access && !FROZEN_CHILLED(csa)
&& !tsd->read_only)
{ /* For read-write process flush file header to write machine_name,
* semaphore, shared memory id and semaphore creation time to disk.
* Note: If first process to open db was read-only, then sem/shm info would have already been flushed
* using gtmsecshr but machine_name is flushed only now. It is possible the first writer bypassed
* the ftok/access in which case we will not write the machine_name then (because we do not hold a
* lock on the database to safely flush the file header) but it is considered acceptable to wait
* until the first non-bypassing-writer process attaches since those bypassing processes would be
* DSE/LKE only.
*/
cnl->first_nonbypas_writer_seen = TRUE;
STRNCPY_STR(csd->machine_name, machine_name, MAX_MCNAMELEN);
assert(csd->shmid == tsd->shmid); /* csd already has uptodate sem/shm info from the UDI2CSD call above */
assert(csd->semid == tsd->semid);
assert(!memcmp(&csd->gt_sem_ctime, &tsd->gt_sem_ctime, SIZEOF(tsd->gt_sem_ctime)));
assert(!memcmp(&csd->gt_shm_ctime, &tsd->gt_shm_ctime, SIZEOF(tsd->gt_shm_ctime)));
DB_LSEEKWRITE(csa, udi, udi->fn, udi->fd, (off_t)0, (sm_uc_ptr_t)csd, SGMNT_HDR_LEN, save_errno);
if (0 != save_errno)
{
if (save_jnlpool != jnlpool)
jnlpool = save_jnlpool;
RTS_ERROR(VARLSTCNT(9) ERR_DBFILERR, 2, DB_LEN_STR(reg),
ERR_TEXT, 2, LEN_AND_LIT("Error with database header flush"), save_errno);
}
}
} else if (read_only && new_shm_ipc)
{ /* For read-only process if shared memory and semaphore created for first time,
* semaphore and shared memory id, and semaphore creation time are written to disk.
*/
db_ipcs.open_fd_with_o_direct = udi->fd_opened_with_o_direct;
db_ipcs.semid = tsd->semid; /* use tsd instead of csd in order for MM to work too */
db_ipcs.shmid = tsd->shmid;
db_ipcs.gt_sem_ctime = tsd->gt_sem_ctime.ctime;
db_ipcs.gt_shm_ctime = tsd->gt_shm_ctime.ctime;
db_ipcs.fn_len = reg->dyn.addr->fname_len;
memcpy(db_ipcs.fn, reg->dyn.addr->fname, reg->dyn.addr->fname_len);
db_ipcs.fn[reg->dyn.addr->fname_len] = 0;
WAIT_FOR_REPL_INST_UNFREEZE_SAFE(csa);
if(!tsd->read_only)
{
secshrstat = send_mesg2gtmsecshr(FLUSH_DB_IPCS_INFO, 0, (char *)NULL, 0);
csa->read_only_fs = (EROFS == secshrstat);
}
if ((0 != secshrstat) && !csa->read_only_fs && !tsd->read_only)
{
if (save_jnlpool != jnlpool)
jnlpool = save_jnlpool;
RTS_ERROR(VARLSTCNT(8) ERR_DBFILERR, 2, DB_LEN_STR(reg),
ERR_TEXT, 2, LEN_AND_LIT("gtmsecshr failed to update database file header"));
}
}
if (save_jnlpool != jnlpool)
jnlpool = save_jnlpool;
if (ftok_counter_halted || access_counter_halted)
{
if (!csd->mumps_can_bypass)
{ /* We skipped ftok/access counter increment operation, but after reading the file header, we found out we
* are not allowed to do that. Abort. */
SET_SEMWAIT_FAILURE_RETSTAT(&retstat, ERANGE, op_semctl_or_semop, 0, ERR_CRITSEMFAIL, 0);
ISSUE_SEMWAIT_ERROR((&retstat), reg, udi, (ftok_counter_halted ? "ftok" : "access control"));
}
if (ftok_counter_halted && !cnl->ftok_counter_halted)
{
cnl->ftok_counter_halted = TRUE;
send_msg_csa(CSA_ARG(csa) VARLSTCNT(7) ERR_NOMORESEMCNT, 5,
LEN_AND_LIT("ftok"), FILE_TYPE_DB, DB_LEN_STR(reg));
}
if (access_counter_halted && !cnl->access_counter_halted)
{
cnl->access_counter_halted = TRUE;
send_msg_csa(CSA_ARG(csa) VARLSTCNT(7) ERR_NOMORESEMCNT, 5,
LEN_AND_LIT("access"), FILE_TYPE_DB, DB_LEN_STR(reg));
}
}
if (udi->counter_acc_incremented && cnl->access_counter_halted)
{ /* Shared access counter had overflown a while back but is not right now. Undo the counter bump that we
* did as otherwise we will later have problems (for example if this is a MUPIP SET -JOURNAL command that
* needs standalone access and does a "gds_rundown" followed by a "mu_rndwn_file" later. The "mu_rndwn_file"
* call will wait for the counter to become 0 which it never will as we would have bumped it here.
*/
SET_SOP_ARRAY_FOR_DECR_CNT(sop, sopcnt, (SEM_UNDO | IPC_NOWAIT));
SEMOP(udi->semid, sop, sopcnt, status, NO_WAIT);
udi->counter_acc_incremented = FALSE;
assert(-1 != status); /* since we hold the access control lock, we do not expect any errors */
}
if (udi->counter_ftok_incremented && cnl->ftok_counter_halted)
{ /* Do similar cleanup for ftok like we did for access semaphore above */
SET_SOP_ARRAY_FOR_DECR_CNT(sop, sopcnt, (SEM_UNDO | IPC_NOWAIT));
SEMOP(udi->ftok_semid, sop, sopcnt, status, NO_WAIT);
udi->counter_ftok_incremented = FALSE;
assert(-1 != status); /* since we hold the access control lock, we do not expect any errors */
}
if (csd->write_fullblk)
{ /* We have been asked to do FULL BLOCK WRITES for this database. On *NIX, attempt to get the filesystem
* blocksize from statvfs. This allows a full write of a blockwithout the OS having to fetch the old
* block for a read/update operation. We will round the IOs to the next filesystem blocksize if the
* following criteria are met:
*
* 1) Database blocksize must be a whole multiple of the filesystem blocksize for the above
* mentioned reason.
*
* 2) Filesystem blocksize must be a factor of the location of the first data block
* given by the start_vbn.
*
* The saved length (if the feature is enabled) will be the filesystem blocksize and will be the
* length that a database IO is rounded up to prior to initiation of the IO.
*/
fbwsize = get_fs_block_size(udi->fd);
dblksize = csd->blk_size;
if (0 == fbwsize || (0 != dblksize % fbwsize) || (0 != (BLK_ZERO_OFF(csd->start_vbn)) % fbwsize))
{
if (!IS_STATSDB_REGNAME(reg))
{
if (!fbwsize)
gtm_putmsg_csa(CSA_ARG(NULL) VARLSTCNT(7) ERR_DBFILNOFULLWRT, 5,
LEN_AND_LIT("Could not get native filesize"),
LEN_AND_LIT("File size extracted: "), fbwsize);
else if (0 != dblksize % fbwsize)
gtm_putmsg_csa(CSA_ARG(NULL) VARLSTCNT(7) ERR_DBFILNOFULLWRT, 5,
LEN_AND_LIT("Database block size not a multiple of file system block size\n"),
LEN_AND_LIT("DB blocks size: "), dblksize);
}
csd->write_fullblk = 0; /* This region is not fullblockwrite enabled */
}
/* Report this length in DSE even if not enabled */
csa->fullblockwrite_len = fbwsize; /* Length for rounding fullblockwrite */
}
/* Note that the below value is normally incremented/decremented under control of the init/rundown semaphore in
* "db_init" and "gds_rundown" but if QDBRUNDOWN is turned ON it could be manipulated without the semaphore in
* both callers. Therefore use interlocked INCR_CNT/DECR_CNT.
*/
INCR_CNT(&cnl->ref_cnt, &cnl->wc_var_lock);
assert(!csa->ref_cnt); /* Increment shared ref_cnt before private ref_cnt increment. */
csa->ref_cnt++; /* Currently journaling logic in gds_rundown() in VMS relies on this order to detect last writer */
if (WBTEST_ENABLED(WBTEST_HOLD_SEM_BYPASS) && !IS_GTM_IMAGE)
{
if (0 == cnl->wbox_test_seq_num)
{
cnl->wbox_test_seq_num = 1;
DBGFPF((stderr, "Holding semaphores...\n"));
while (1 == cnl->wbox_test_seq_num)
LONG_SLEEP(1);
}
}
if (!have_standalone_access && !jgbl.onlnrlbk && !bypassed_access)
{
/* Release control lockout now that it is init'd */
if (0 != (save_errno = do_semop(udi->semid, DB_CONTROL_SEM, -1, SEM_UNDO)))
{
save_errno = errno;
RTS_ERROR(VARLSTCNT(12) ERR_CRITSEMFAIL, 2, DB_LEN_STR(reg), ERR_SYSCALL, 5, \
RTS_ERROR_LITERAL("semop()"), CALLFROM, save_errno);
}
udi->grabbed_access_sem = FALSE;
}
if (WBTEST_ENABLED(WBTEST_SEMTOOLONG_STACK_TRACE) && (1 == cnl->wbox_test_seq_num))
{
cnl->wbox_test_seq_num = 2;
/* Wait till the other process has got some stack traces */
while (cnl->wbox_test_seq_num != 3)
LONG_SLEEP(1);
}
/* In case of REORG -ENCRYPT the ftok will be released after it has incremented cnl->reorg_encrypt_cycle. */
if (!have_standalone_access && !bypassed_ftok && !mu_reorg_encrypt_in_prog)
{ /* Release ftok semaphore lock so that any other ftok conflicted database can continue now */
if (!ftok_sem_release(reg, FALSE, FALSE))
RTS_ERROR(VARLSTCNT(4) ERR_DBFILERR, 2, DB_LEN_STR(reg));
FTOK_TRACE(csa, csd->trans_hist.curr_tn, ftok_ops_release, process_id);
udi->grabbed_ftok_sem = FALSE;
}
if (udi->fd_opened_with_o_direct)
{ /* When we opened the database file we allocated an aligned buffer to hold SGMNT_HDR_LEN bytes.
* Now that we have read the db file header (as part of READ_DB_FILE_HEADER above) check if the
* database block size is bigger than SGMNT_HDR_LEN. If so, allocate more aligned space in the
* global variable "dio_buff" as that will be later used to write either the file header or a GDS block.
*/
DIO_BUFF_EXPAND_IF_NEEDED(udi, csd->blk_size, &(TREF(dio_buff)));
}
REVERT;
return 0;
}
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