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/****************************************************************
* *
* Copyright (c) 2015-2020 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 "gdsroot.h"
#include "gdsbt.h"
#include "gdskill.h"
#include "gdsfhead.h"
#include "filestruct.h"
#include "jnl.h"
#include "gdscc.h"
#include "buddy_list.h"
#include "tp.h"
#include "gdsblk.h"
#include "gdsblkops.h"
#include "cli.h"
#include "mu_getlst.h"
#include "mupip_exit.h"
#include "util.h"
#include "targ_alloc.h"
#include "wcs_flu.h"
#include "t_qread.h"
#include "gdsbml.h"
#include "cert_blk.h"
#include "t_begin.h"
#include "t_retry.h"
#include "t_write_map.h"
#include "t_write.h"
#include "t_end.h"
#include "sleep_cnt.h"
#include "gtm_c_stack_trace.h"
#include "is_proc_alive.h"
#include "gtmsecshr.h"
#include "wcs_backoff.h"
#include "wcs_sleep.h"
#include "gtm_sem.h"
#include "gtm_semutils.h"
#include "eintr_wrapper_semop.h"
#include "do_semop.h"
#include "ftok_sems.h"
#include "have_crit.h"
#include "mupip_reorg_encrypt.h"
#include "t_abort.h"
#include "interlock.h"
#include "repl_msg.h" /* for gtmsource.h */
#include "gtmsource.h" /* for jnlpool_addrs_ptr_t */
GBLREF bool error_mupip;
GBLREF bool mu_ctrlc_occurred;
GBLREF bool mu_ctrly_occurred;
GBLREF char *update_array; /* for the BLK_INIT/BLK_SEG/BLK_ADDR macros */
GBLREF char *update_array_ptr; /* for the BLK_INIT/BLK_SEG/BLK_ADDR macros */
GBLREF cw_set_element cw_set[]; /* create write set */
GBLREF boolean_t mu_reorg_process;
GBLREF gd_region *ftok_sem_reg;
GBLREF gd_region *gv_cur_region;
GBLREF gv_namehead *gv_target;
GBLREF gv_namehead *gv_target_list;
GBLREF inctn_detail_t inctn_detail; /* holds detail to fill in to inctn jnl record */
GBLREF inctn_opcode_t inctn_opcode;
GBLREF int4 gv_keysize;
GBLREF jnl_gbls_t jgbl;
GBLREF uint4 mu_reorg_encrypt_in_prog; /* Non-zero if MUPIP REORG ENCRYPT is in progress. The numeric value is
* needed to set a special temporary indication to a dsk_read call on a
* local buffer. */
GBLREF sgmnt_addrs *cs_addrs;
GBLREF sgmnt_data_ptr_t cs_data;
GBLREF tp_region *grlist;
GBLREF uint4 process_id;
GBLREF uint4 update_array_size; /* for the BLK_INIT/BLK_SEG/BLK_ADDR macros */
GBLREF uint4 update_trans;
GBLREF unsigned char cw_map_depth;
GBLREF unsigned char cw_set_depth;
GBLREF unsigned char rdfail_detail;
GBLREF sgmnt_addrs *reorg_encrypt_restart_csa;
error_def(ERR_BUFFLUFAILED);
error_def(ERR_BUFRDTIMEOUT);
error_def(ERR_CRITSEMFAIL);
error_def(ERR_CRYPTNOKEY);
error_def(ERR_DBFILERR);
error_def(ERR_DBNOREGION);
error_def(ERR_DBRDONLY);
error_def(ERR_DSEBLKRDFAIL);
error_def(ERR_JNLEXTEND);
error_def(ERR_MUNOACTION);
error_def(ERR_MUNOFINISH);
error_def(ERR_MUREORGFAIL);
error_def(ERR_ENCRYPTCONFLT);
error_def(ERR_MUREENCRYPTEND);
error_def(ERR_MUREENCRYPTSTART);
error_def(ERR_MUREENCRYPTV4NOALLOW);
error_def(ERR_REORGCTRLY);
STATICFNDEF boolean_t wait_for_concurrent_reads(sgmnt_addrs *csa);
STATICFNDEF void get_ftok_semaphore(gd_region *reg, sgmnt_addrs *csa);
STATICFNDEF void release_ftok_semaphore(gd_region *reg, sgmnt_addrs *csa, sgmnt_data_ptr_t csd);
STATICFNDEF void switch_journal_file(sgmnt_addrs *csa, sgmnt_data_ptr_t csd);
#define EXIT_MUPIP_REORG(STATUS) \
MBSTART { \
mu_reorg_encrypt_in_prog = MUPIP_REORG_IN_PROG_FALSE; \
mupip_exit(STATUS); \
} MBEND
/* Note: The below should not use MBSTART/MBEND as it does a "continue" (see MBSTART macro definition comment) */
#define CONTINUE_TO_NEXT_REGION(CSA, CSD, CNL, REG, REG_STATUS, STATUS, REORG_IN_PROG, HAVE_CRIT, ERROR, OPER, ...) \
{ \
if (REORG_IN_PROG) \
{ \
assert((CNL)->reorg_encrypt_pid == process_id); \
(CNL)->reorg_encrypt_pid = 0; \
} \
if (HAVE_CRIT) \
rel_crit(REG); \
release_ftok_semaphore(REG, CSA, CSD); \
OPER __VA_ARGS__; \
if (ERROR) \
STATUS = REG_STATUS = ERR_MUNOFINISH; \
continue; \
}
#define REORG_IN_PROG_SET TRUE
#define REORG_IN_PROG_NOT_SET FALSE
#define HOLDING_CRIT TRUE
#define NOT_HOLDING_CRIT FALSE
#define IS_ERROR TRUE
#define IS_NOT_ERROR FALSE
/* Perform an online (re)encryption of the specified region(s) using the specified key. A lot of code in this module is modeled on
* mu_reorg_upgrd_dwngrd.c.
*/
void mupip_reorg_encrypt(void)
{
char key[GTM_PATH_MAX], hash[GTMCRYPT_HASH_LEN];
char *db_name, *bml_lcl_buff;
int db_name_len, gtmcrypt_errno, status, reg_status, status1;
int reg_count, i, cycle, lcnt, bml_status;
int4 blk_seg_cnt, blk_size, mapsize; /* needed for BLK_INIT,BLK_SEG and BLK_FINI macros */
unsigned short key_len;
gd_region *reg;
gtmcrypt_key_t *handles;
boolean_t need_journal_switch;
uint4 is_encrypted;
srch_hist alt_hist;
srch_blk_status *blkhist, bmlhist;
tp_region *rptr;
sgmnt_addrs *csa;
sgmnt_data_ptr_t csd;
node_local_ptr_t cnl;
block_id *blkid_ptr, start_blk, start_bmp, last_bmp, curbmp, curblk, total_blks;
trans_num curr_tn, start_tn, blk_tn;
sm_uc_ptr_t blkBase, bml_sm_buff; /* shared memory pointer to the bitmap global buffer */
cache_rec_ptr_t cr;
blk_segment *bs1, *bs_ptr;
sm_uc_ptr_t bptr, buff;
blk_hdr new_hdr;
unsigned char save_cw_set_depth;
uint4 lcl_update_trans, pid, bptr_size;
jnl_private_control *jpc;
# ifdef DEBUG
uint4 reencryption_count;
block_id initial_blk_cnt;
# endif
unix_db_info *udi;
DCL_THREADGBL_ACCESS;
SETUP_THREADGBL_ACCESS;
mu_reorg_encrypt_in_prog = MUPIP_REORG_IN_PROG_TRUE;
status = SS_NORMAL;
/* Get the region(s) parameter. */
gvinit();
error_mupip = FALSE;
mu_getlst("REG_NAME", SIZEOF(tp_region));
if (error_mupip)
EXIT_MUPIP_REORG(ERR_MUNOACTION);
else if (!grlist)
{
gtm_putmsg_csa(CSA_ARG(NULL) VARLSTCNT(1) ERR_DBNOREGION);
EXIT_MUPIP_REORG(ERR_MUNOACTION);
}
/* Get the key parameter (we should not have come here unless the -ENCRYPT qualifier was supplied). */
assert(CLI_PRESENT == cli_present("ENCRYPT"));
key_len = SIZEOF(key);
if (!cli_get_str("ENCRYPT", key, &key_len))
{
gtm_putmsg_csa(CSA_ARG(NULL) VARLSTCNT(1) ERR_CRYPTNOKEY);
EXIT_MUPIP_REORG(ERR_MUNOACTION);
}
/* Even though we are only specifying one key to be potentially applied to multiple regions, we need to ensure that every
* database file has an association with the specified key file in the encryption configuration. The fact that we are
* allocating space for all of the encryption handles instead of one should not matter much in terms of memory because each
* handles is quite small and we do not expect multiple REORG -ENCRYPT processes running concurrently. However, this saves
* us the trouble of releasing the same handle multiple times in the loop and once more in the end.
*/
for (rptr = grlist, reg_count = 0; NULL != rptr; rptr = rptr->fPtr, reg_count++)
;
handles = (gtmcrypt_key_t *)malloc(SIZEOF(gtmcrypt_key_t) * reg_count);
memset(handles, 0, SIZEOF(gtmcrypt_key_t) * reg_count);
for (i = 0, rptr = grlist; NULL != rptr; rptr = rptr->fPtr, i++)
{
reg = rptr->reg;
db_name_len = reg->dyn.addr->fname_len;
db_name = (char *)reg->dyn.addr->fname;
/* Initialize encryption once. */
if (grlist == rptr)
{
INIT_PROC_ENCRYPTION(gtmcrypt_errno);
if (0 != gtmcrypt_errno)
{
GTMCRYPT_REPORT_ERROR(gtmcrypt_errno, gtm_putmsg, db_name_len, db_name);
EXIT_MUPIP_REORG(ERR_MUNOACTION);
}
}
/* Obtain the hash of the specified key and initialize an encryption handle for it. It is somewhat wasteful to do it
* for every region given that we only need one hash and the handle will also be shared among all regions, but, as
* explained above, this ensures that the operation is provisioned for every database in the encryption
* configuration file.
*/
GTMCRYPT_HASH_GEN(NULL, db_name_len, db_name, key_len, key, hash, gtmcrypt_errno);
if (0 != gtmcrypt_errno)
{
GTMCRYPT_REPORT_ERROR(gtmcrypt_errno, gtm_putmsg, db_name_len, db_name);
EXIT_MUPIP_REORG(ERR_MUNOACTION);
}
GTMCRYPT_INIT_BOTH_CIPHER_CONTEXTS(NULL, hash, db_name_len, db_name, handles[i], gtmcrypt_errno);
if (0 != gtmcrypt_errno)
{
GTMCRYPT_REPORT_ERROR(gtmcrypt_errno, gtm_putmsg, db_name_len, db_name);
EXIT_MUPIP_REORG(ERR_MUNOACTION);
}
}
assert(DBKEYSIZE(MAX_KEY_SZ) == gv_keysize); /* no need to invoke GVKEYSIZE_INIT_IF_NEEDED macro */
gv_target = targ_alloc(gv_keysize, NULL, NULL); /* t_begin needs this initialized */
gv_target_list = NULL;
memset(&alt_hist, 0, SIZEOF(alt_hist)); /* null-initialize history */
blkhist = &alt_hist.h[0];
bptr = NULL;
bptr_size = 0;
bml_lcl_buff = NULL;
/* Start processing regions one by one. */
for (i = 0, rptr = grlist; NULL != rptr; rptr = rptr->fPtr, i++)
{
if (mu_ctrly_occurred || mu_ctrlc_occurred)
break;
reg_status = SS_NORMAL;
reg = rptr->reg;
if (i != 0)
util_out_print("", TRUE);
util_out_print("Region !AD : MUPIP REORG ENCRYPT started", TRUE, REG_LEN_STR(reg));
if (reg_cmcheck(reg))
{
util_out_print("Region !AD : MUPIP REORG ENCRYPT cannot run across network", TRUE, REG_LEN_STR(reg));
status = reg_status = ERR_MUNOFINISH;
continue;
}
mu_reorg_process = TRUE; /* gvcst_init will use this value to use gtm_poollimit settings. */
gvcst_init(reg, NULL);
mu_reorg_process = FALSE;
/* Note that db_init() does not release the access-control semaphore in case of MUPIP REORG -ENCRYPT (as determined
* based on the mu_reorg_encrypt_in_prog variable), so no need to obtain it here.
*/
assert((ftok_sem_reg == reg) && (TRUE == FILE_INFO(reg)->grabbed_ftok_sem));
TP_CHANGE_REG(reg); /* sets gv_cur_region, cs_addrs, cs_data, which are needed by jnl_ensure_open and wcs_flu */
csa = cs_addrs;
csd = cs_data;
cnl = csa->nl;
db_name_len = reg->dyn.addr->fname_len;
db_name = (char *)reg->dyn.addr->fname;
/* Access method stored in global directory and database file header might be different, in which case the database
* setting prevails.
*/
if (dba_bg != REG_ACC_METH(reg))
{
CONTINUE_TO_NEXT_REGION(csa, csd, cnl, reg, reg_status, status,
REORG_IN_PROG_NOT_SET, NOT_HOLDING_CRIT, IS_ERROR,
util_out_print, ("Region !AD : MUPIP REORG -ENCRYPT cannot continue as access method is not BG",
TRUE, REG_LEN_STR(reg)));
}
/* The mu_getlst call above uses insert_region to create the grlist, which ensures that duplicate regions mapping to
* the same db file correspond to only one grlist entry.
*/
assert(FALSE == reg->was_open);
if (reg->read_only)
{
CONTINUE_TO_NEXT_REGION(csa, csd, cnl, reg, reg_status, status, REORG_IN_PROG_NOT_SET, NOT_HOLDING_CRIT,
IS_ERROR, gtm_putmsg_csa, (CSA_ARG(csa) VARLSTCNT(4) ERR_DBRDONLY, 2, db_name_len, db_name));
}
/* ++++++++++++++++++++++++++ IN CRIT ++++++++++++++++++++++++++ */
grab_crit(reg, WS_91);
if (!csd->fully_upgraded)
{
CONTINUE_TO_NEXT_REGION(csa, csd, cnl, reg, reg_status, status,
REORG_IN_PROG_NOT_SET, HOLDING_CRIT, IS_ERROR,
gtm_putmsg_csa, (CSA_ARG(csa) VARLSTCNT(4) ERR_MUREENCRYPTV4NOALLOW, 2, DB_LEN_STR(reg)));
}
if (cnl->mupip_extract_count)
{
CONTINUE_TO_NEXT_REGION(csa, csd, cnl, reg, reg_status, status,
REORG_IN_PROG_NOT_SET, HOLDING_CRIT, IS_ERROR,
gtm_putmsg_csa, (CSA_ARG(csa) VARLSTCNT(8) ERR_ENCRYPTCONFLT, 6,
RTS_ERROR_LITERAL("MUPIP REORG -ENCRYPT"), REG_LEN_STR(reg), DB_LEN_STR(reg)));
}
pid = cnl->reorg_encrypt_pid;
if (pid && is_proc_alive(pid, 0))
{
CONTINUE_TO_NEXT_REGION(csa, csd, cnl, reg, reg_status, status,
REORG_IN_PROG_NOT_SET, HOLDING_CRIT, IS_ERROR,
util_out_print, ("Region !AD : MUPIP REORG -ENCRYPT processes cannot operate concurrently. "
"Concurrent REORG's pid is !UL", TRUE, REG_LEN_STR(reg), pid));
}
if ((UNSTARTED == csd->encryption_hash_cutoff) && (0 != csd->encryption_hash2_start_tn))
{
CONTINUE_TO_NEXT_REGION(csa, csd, cnl, reg, reg_status,
status, REORG_IN_PROG_NOT_SET, HOLDING_CRIT, IS_ERROR,
util_out_print, ("Region !AD : A previous MUPIP REORG -ENCRYPT has finished, but (re)encryption has"
" not been marked complete. Run MUPIP SET -ENCRYPTIONCOMPLETE to do so", TRUE, REG_LEN_STR(reg)));
}
cnl->reorg_encrypt_pid = process_id;
is_encrypted = csd->is_encrypted;
if (IS_ENCRYPTED(is_encrypted))
{
if ((!TO_BE_ENCRYPTED(is_encrypted) || (UNSTARTED == csd->encryption_hash_cutoff))
&& !memcmp(hash, csd->encryption_hash, GTMCRYPT_HASH_LEN))
{
CONTINUE_TO_NEXT_REGION(csa, csd, cnl, reg, reg_status, status, REORG_IN_PROG_SET, HOLDING_CRIT,
IS_NOT_ERROR, util_out_print, ("Region !AD : Data already encrypted with the desired key - "
"no change made", TRUE, REG_LEN_STR(reg)));
}
# ifdef DEBUG
/* In case the database is at all encrypted now, we will need the encryption handle to decrypt existing
* blocks. It should have been set up by gvcst_init(). Assert that.
*/
assert(NULL != csa->encr_key_handle);
GTMCRYPT_HASH_CHK(csa, csd->encryption_hash, db_name_len, db_name, gtmcrypt_errno);
assert(0 == gtmcrypt_errno);
# endif
} else if (!TO_BE_ENCRYPTED(is_encrypted))
{
CONTINUE_TO_NEXT_REGION(csa, csd, cnl, reg, reg_status, status, REORG_IN_PROG_SET, HOLDING_CRIT, IS_ERROR,
util_out_print, ("Region !AD : MUPIP REORG -ENCRYPT can only operate on encryptable databases",
TRUE, REG_LEN_STR(reg)));
}
/* Wait for all the readers to complete to prevent them from attempting to digest an encrypted block or trying to
* decrypt a block with a wrong key in case MUPIP REORG -ENCRYPT has concurrently processed that block.
*/
if (!wait_for_concurrent_reads(csa))
{
CONTINUE_TO_NEXT_REGION(csa, csd, cnl, reg, reg_status, status, REORG_IN_PROG_SET, HOLDING_CRIT, IS_ERROR,
util_out_print, ("Region !AD : Timed out waiting for concurrent reads to finish",
TRUE, REG_LEN_STR(reg)));
}
/* Same for writers. Since we are going to switch the journal file, we might as well write the last EPOCH with the
* old encryption settings.
*/
if (!wcs_flu(WCSFLU_WRITE_EPOCH))
{
CONTINUE_TO_NEXT_REGION(csa, csd, cnl, reg, reg_status, status, REORG_IN_PROG_SET, HOLDING_CRIT, IS_ERROR,
gtm_putmsg_csa, (CSA_ARG(csa) VARLSTCNT(6) ERR_BUFFLUFAILED, 4,
LEN_AND_LIT("MUPIP REORG ENCRYPT"), db_name_len, db_name));
}
curr_tn = csd->trans_hist.curr_tn;
total_blks = csd->trans_hist.total_blks;
# ifdef DEBUG
initial_blk_cnt = total_blks;
# endif
blk_size = csd->blk_size; /* "blk_size" is used by the BLK_FINI macro */
send_msg_csa(CSA_ARG(csa) VARLSTCNT(6) ERR_MUREENCRYPTSTART, 4, DB_LEN_STR(reg), process_id, &curr_tn);
if (UNSTARTED == csd->encryption_hash_cutoff)
{ /* Database is either fully encrypted or unencrypted. Start encryption from the first block. */
memcpy(csd->encryption_hash2, hash, GTMCRYPT_HASH_LEN);
csd->encryption_hash2_start_tn = curr_tn;
start_tn = curr_tn;
start_blk = 0;
need_journal_switch = TRUE;
} else
{ /* Encryption was already underway when it was stopped. Resume from the first unencrypted block. */
assert(UNSTARTED < csd->encryption_hash_cutoff);
assert((0 < csd->encryption_hash2_start_tn) && (curr_tn >= csd->encryption_hash2_start_tn));
if (memcmp(hash, csd->encryption_hash2, GTMCRYPT_HASH_LEN))
{
CONTINUE_TO_NEXT_REGION(csa, csd, cnl, reg, reg_status, status,
REORG_IN_PROG_SET, HOLDING_CRIT, IS_ERROR,
util_out_print, ("Region !AD : MUPIP REORG -ENCRYPT process was previously started with a "
"different hash. Use the same hash to complete the operation.", TRUE, REG_LEN_STR(reg)));
}
start_tn = csd->encryption_hash2_start_tn;
start_blk = csd->encryption_hash_cutoff;
if (start_blk > total_blks)
start_blk = total_blks;
need_journal_switch = FALSE;
}
cnl->reorg_encrypt_cycle++;
csd->encryption_hash_cutoff = start_blk;
MARK_AS_TO_BE_ENCRYPTED(csd->is_encrypted);
assert(NULL != csa->encr_ptr);
COPY_ENC_INFO(csd, csa->encr_ptr, cnl->reorg_encrypt_cycle);
memcpy(&csa->encr_key_handle2, &handles[i], SIZEOF(gtmcrypt_key_t));
if (JNL_ENABLED(csd) && need_journal_switch)
switch_journal_file(csa, csd);
DBG_RECORD_CRYPT_UPDATE(csd, csa, cnl, process_id);
/* Before releasing crit, flush the file header to disk. */
if (!wcs_flu(WCSFLU_FLUSH_HDR)) /* wcs_flu assumes gv_cur_region is set (which it is in this routine) */
{
CONTINUE_TO_NEXT_REGION(csa, csd, cnl, reg, reg_status, status, REORG_IN_PROG_SET, HOLDING_CRIT, IS_ERROR,
gtm_putmsg_csa, (CSA_ARG(csa) VARLSTCNT(6) ERR_BUFFLUFAILED, 4,
LEN_AND_LIT("MUPIP REORG ENCRYPT2"), db_name_len, db_name));
}
rel_crit(reg);
release_ftok_semaphore(reg, csa, csd);
/* -------------------------- OUT OF CRIT -------------------------- */
# ifdef DEBUG
if (WBTEST_ENABLED(WBTEST_SLEEP_IN_MUPIP_REORG_ENCRYPT))
{
if (2 > gtm_white_box_test_case_count)
{
util_out_print("Starting the sleep", TRUE);
if (0 == gtm_white_box_test_case_count)
{
LONG_SLEEP(60);
}
} else
reencryption_count = gtm_white_box_test_case_count;
}
# endif
udi = FILE_INFO(reg);
if (udi->fd_opened_with_o_direct)
{
DIO_BUFF_EXPAND_IF_NEEDED(udi, blk_size, &(TREF(dio_buff)));
} else if ((NULL != bptr) && (bptr_size < blk_size))
{ /* malloc/free "bptr" for each region as GDS block-size can be different */
free(bptr);
bptr = NULL;
}
start_bmp = ROUND_DOWN2(start_blk, BLKS_PER_LMAP);
last_bmp = ROUND_DOWN2(total_blks - 1, BLKS_PER_LMAP);
for (curbmp = start_bmp; curbmp <= last_bmp; curbmp += BLKS_PER_LMAP)
{
if (mu_ctrly_occurred || mu_ctrlc_occurred)
{
reg_status = ERR_MUNOFINISH;
break;
}
assert(!csa->now_crit);
bml_sm_buff = t_qread(curbmp, (sm_int_ptr_t)&cycle, &cr); /* bring block into the cache outside of crit */
/* ++++++++++++++++++++++++++ IN CRIT ++++++++++++++++++++++++++ */
grab_crit_encr_cycle_sync(reg, WS_92); /* needed so t_qread does not return NULL below */
/* Safeguard against someone concurrently changing the database file header. It is unsafe to continue. */
if (start_tn != csd->encryption_hash2_start_tn)
{
rel_crit(reg);
reg_status = ERR_MUNOFINISH;
break;
}
if (total_blks > csd->trans_hist.total_blks)
{
total_blks = csd->trans_hist.total_blks;
last_bmp = ROUND_DOWN2(total_blks - 1, BLKS_PER_LMAP);
if (curbmp >= total_blks)
{
rel_crit(reg);
assert(SS_NORMAL == reg_status);
break;
}
}
/* Before changing the hash cutoff, check if the journal file is not open in shared memory (possible
* if a concurrent jnl switch happened due to a MUPIP SET JOURNAL or MUPIP BACKUP etc.). If so, open
* the journal file in shared memory while the db and jnl headers have identical hash cutoff or else
* whoever later opens the journal file first would get a CRYPTJNLMISMATCH error.
*/
if (JNL_ENABLED(csd))
{
jpc = csa->jnl;
if (0 == cnl->jnl_file.u.inode)
{
assert(JNL_FILE_SWITCHED(jpc));
ENSURE_JNL_OPEN(csa, reg);
}
assert(0 != cnl->jnl_file.u.inode);
}
csd->encryption_hash_cutoff = curbmp;
bml_sm_buff = t_qread(curbmp, (sm_int_ptr_t)&cycle, &cr); /* now that in crit, note down stable buffer */
if (NULL == bml_sm_buff)
rts_error_csa(CSA_ARG(csa) VARLSTCNT(1) ERR_DSEBLKRDFAIL);
/* Take a copy of the shared memory bitmap buffer into process-private memory before releasing crit. We are
* interested in those blocks that are currently marked as USED in the bitmap. It is possible that once we
* release crit, concurrent updates change the bitmap state of those blocks. In that case, those updates
* will take care of doing the (re)encryption of those blocks based on the encryption_hash2_start_tn value.
*/
if (NULL == bml_lcl_buff)
bml_lcl_buff = malloc(BM_SIZE(BLKS_PER_LMAP));
memcpy(bml_lcl_buff, (blk_hdr_ptr_t)bml_sm_buff, BM_SIZE(BLKS_PER_LMAP));
if (FALSE == cert_blk(reg, curbmp, (blk_hdr_ptr_t)bml_lcl_buff, 0, FALSE, NULL))
{ /* Certify the block while holding crit as cert_blk uses fields from file-header (shared memory). */
rel_crit(reg);
assert(FALSE); /* In pro, skip ugprading/downgarding all blks in this unreliable local bitmap. */
util_out_print("Region !AD : Bitmap Block [0x!XL] has integrity errors. Skipping this bitmap.",
TRUE, REG_LEN_STR(reg), curbmp);
status = reg_status = ERR_MUNOFINISH;
continue;
}
rel_crit(reg);
/* -------------------------- OUT OF CRIT -------------------------- */
/* ------------------------------------------------------------------------
* (Re)encrypt all BUSY and REUSABLE blocks in the current bitmap
* ------------------------------------------------------------------------
*/
/* (total_blks - curbmp) can be cast because it should never be larger then BLKS_PER_LMAP */
DEBUG_ONLY(if(curbmp == last_bmp) assert(BLKS_PER_LMAP >= (total_blks - curbmp)));
mapsize = (curbmp == last_bmp) ? (int4)(total_blks - curbmp) : BLKS_PER_LMAP;
assert(0 != mapsize);
for (lcnt = 0; lcnt < mapsize; lcnt++)
{
if (mu_ctrly_occurred || mu_ctrlc_occurred)
{
reg_status = ERR_MUNOFINISH;
break;
}
GET_BM_STATUS(bml_lcl_buff, lcnt, bml_status);
assert(BLK_MAPINVALID != bml_status); /* cert_blk ran clean so we don't expect invalid entries */
if (BLK_FREE == bml_status)
continue;
curblk = curbmp + lcnt;
if (lcnt)
{ /* non-bitmap block */
/* read in block from disk into private buffer. don't pollute the cache yet */
if (!udi->fd_opened_with_o_direct)
{
if (NULL == bptr)
{
bptr = (sm_uc_ptr_t)malloc(blk_size);
bptr_size = blk_size;
}
buff = bptr;
} else
buff = (sm_uc_ptr_t)(TREF(dio_buff)).aligned;
mu_reorg_encrypt_in_prog = MUPIP_REORG_IN_PROG_LOCAL_DSK_READ;
status1 = dsk_read(curblk, buff, NULL, FALSE);
mu_reorg_encrypt_in_prog = MUPIP_REORG_IN_PROG_TRUE;
if (SS_NORMAL != status1)
{
gtm_putmsg_csa(CSA_ARG(csa) VARLSTCNT(5) ERR_DBFILERR, 2, DB_LEN_STR(reg), status1);
util_out_print("Region !AD : Error occurred while reading block [0x!XL]",
TRUE, REG_LEN_STR(reg), curblk);
reg_status = ERR_MUNOFINISH;
break;
}
blk_tn = ((blk_hdr_ptr_t)buff)->tn;
if (blk_tn >= start_tn)
continue;
}
/* Begin non-TP transaction to (re)encrypt the block.
* The way we do that is by updating the block using a null update array.
* Any update to a block will trigger an automatic (re)encryption of the block based on
* the current fileheader's encryption_hash2_start_tn setting.
*/
t_begin(ERR_MUREORGFAIL, UPDTRNS_DB_UPDATED_MASK);
for (; ;)
{
CHECK_AND_RESET_UPDATE_ARRAY; /* reset update_array_ptr to update_array */
curr_tn = csd->trans_hist.curr_tn;
blkhist->cse = NULL; /* start afresh (do not use value from previous retry) */
if ((CDB_STAGNATE == t_tries) && (curblk >= csd->trans_hist.total_blks))
{ /* Possible in case of a concurrent reorg truncate.
* In this case, the reorg encrypt is done.
* Set variables so we fall out of the nested for loops.
*/
assert(csa->now_crit);
total_blks = csd->trans_hist.total_blks;
last_bmp = ROUND_DOWN2(total_blks - 1, BLKS_PER_LMAP);
assert(NULL == reorg_encrypt_restart_csa);
t_abort(reg, csa);
assert(!csa->now_crit); /* "t_abort" should have released crit */
assert(SS_NORMAL == reg_status);
curbmp = last_bmp; /* ensure we "break" out of 1st level (outermost) for loop */
lcnt = mapsize; /* to break out of 2nd level (outer) for-loop */
break;
}
blkBase = t_qread(curblk, (sm_int_ptr_t)&blkhist->cycle, &blkhist->cr);
if (NULL == blkBase)
{
t_retry((enum cdb_sc)rdfail_detail);
continue;
}
blkhist->blk_num = curblk;
blkhist->buffaddr = blkBase;
new_hdr = *(blk_hdr_ptr_t)blkBase;
blk_tn = new_hdr.tn;
inctn_opcode = inctn_blkreencrypt;
inctn_detail.blknum_struct.blknum = curblk;
if (!lcnt)
{ /* Means a bitmap block. */
BLK_ADDR(blkid_ptr, SIZEOF(block_id), block_id);
*blkid_ptr = 0;
t_write_map(blkhist, (unsigned char *)blkid_ptr, curr_tn, 0);
assert(&alt_hist.h[0] == blkhist);
alt_hist.h[0].blk_num = 0; /* create empty history for bitmap block */
assert(update_trans);
} else
{ /* Non-bitmap block. Fill in history for validation in t_end */
assert(curblk); /* we should never come here for block 0 (bitmap) */
assert(blkhist->blk_num == curblk);
assert(blkhist->buffaddr == blkBase);
blkhist->tn = curr_tn;
alt_hist.h[1].blk_num = 0;
/* Also need to pass the bitmap as history to detect if any concurrent M-kill
* is freeing up the same USED block that we are trying to (re)encrypt OR if any
* concurrent M-set is reusing the same RECYCLED block that we are trying to
* (re)encrypt. Because of t_end currently not being able to validate a bitmap
* without that simultaneously having a cse, we need to create a cse for the
* bitmap that is used only for bitmap history validation, but should not be
* used to update the contents of the bitmap block in bg_update.
*/
bmlhist.buffaddr = t_qread(curbmp, (sm_int_ptr_t)&bmlhist.cycle, &bmlhist.cr);
if (NULL == bmlhist.buffaddr)
{
t_retry((enum cdb_sc)rdfail_detail);
continue;
}
bmlhist.blk_num = curbmp;
bmlhist.tn = curr_tn;
GET_BM_STATUS(bmlhist.buffaddr, lcnt, bml_status);
if (BLK_MAPINVALID == bml_status)
{
t_retry(cdb_sc_lostbmlcr);
continue;
}
if ((BLK_FREE != bml_status) && (blk_tn < start_tn))
{ /* Block still needs to be (re)encrypted; create cse. */
/* TODO: See if we can avoid the full-blown block write and instead make
* "t_end" or "bg_update_phase1" only bump the tn but otherwise leave the
* block alone.
*/
BLK_INIT(bs_ptr, bs1);
BLK_SEG(bs_ptr, blkBase + SIZEOF(new_hdr),
new_hdr.bsiz - SIZEOF(new_hdr));
BLK_FINI(bs_ptr, bs1);
t_write(blkhist, (unsigned char *)bs1, 0, 0,
((blk_hdr_ptr_t)blkBase)->levl, FALSE,
FALSE, GDS_WRITE_PLAIN);
/* The directory tree status for now is only used to determine whether
* writing the block to snapshot file (see t_end_sysops.c). For
* REORG -ENCRYPT process, the block is updated in a sequential way without
* changing the gv_target. In this case, we assume the block is in directory
* tree so as to have it written to the snapshot file.
*/
BIT_SET_DIR_TREE(cw_set[cw_set_depth - 1].blk_prior_state);
/* Reset update_trans in case previous retry had set it to 0 */
update_trans = UPDTRNS_DB_UPDATED_MASK;
if (BLK_RECYCLED == bml_status)
{
assert(cw_set[cw_set_depth - 1].mode == gds_t_write);
cw_set[cw_set_depth - 1].mode = gds_t_write_recycled;
/* We SET block as NOT RECYCLED, otherwise, the mm_update()
* or bg_update_phase2 may skip writing it to snapshot file
* when its level is 0
*/
BIT_CLEAR_RECYCLED(cw_set[cw_set_depth - 1].blk_prior_state);
}
} else
{ /* Block got (re)encrypted by another process since we did the dsk_read or
* this block became marked free in the bitmap. No need to update this
* block; just call t_end for validation of both the non-bitmap block as
* well as the bitmap block. Note down that this transaction is no longer
* updating any blocks.
*/
update_trans = 0;
}
/* Need to put bit maps on the end of the cw set for concurrency checking.
* We want to simulate t_write_map, except we want to update "cw_map_depth"
* instead of "cw_set_depth". Hence the save and restore logic below.
* This part of the code is similar to the one in mu_swap_blk.c
*/
save_cw_set_depth = cw_set_depth;
assert(!cw_map_depth);
t_write_map(&bmlhist, NULL, curr_tn, 0); /* will increment cw_set_depth */
cw_map_depth = cw_set_depth; /* set cw_map_depth to latest cw_set_depth */
cw_set_depth = save_cw_set_depth;/* restore cw_set_depth */
/* t_write_map simulation end */
}
assert(SIZEOF(lcl_update_trans) == SIZEOF(update_trans));
lcl_update_trans = update_trans; /* take a copy before t_end modifies it */
if ((trans_num)0 != t_end(&alt_hist, NULL, TN_NOT_SPECIFIED))
{
# ifdef DEBUG
if (WBTEST_ENABLED(WBTEST_SLEEP_IN_MUPIP_REORG_ENCRYPT)
&& (2 <= gtm_white_box_test_case_count))
{
reencryption_count--;
if (0 == reencryption_count)
{
reg_status = ERR_MUNOFINISH;
break;
}
}
# endif
assert(csd == cs_data);
if (!lcl_update_trans)
assert(lcnt);
break;
}
assert(csd == cs_data);
}
# ifdef DEBUG
if (SS_NORMAL != reg_status)
break; /* this takes into account the WBTEST_SLEEP_IN_MUPIP_REORG_ENCRYPT case above */
# endif
}
if (SS_NORMAL != reg_status)
break;
}
if (SS_NORMAL == reg_status)
{
get_ftok_semaphore(reg, csa);
grab_crit(reg, WS_93);
/* Wait for all the readers to complete to prevent them from attempting to digest an
* encrypted block or decrypt a block with a wrong key in case MUPIP REORG -ENCRYPT has
* concurrently processed that block.
*/
if (!wait_for_concurrent_reads(csa))
{
util_out_print("Region !AD : Timed out waiting for concurrent reads to finish2",
TRUE, REG_LEN_STR(reg));
reg_status = ERR_MUNOFINISH;
break;
}
/* Same for writers. */
if (!wcs_flu(WCSFLU_WRITE_EPOCH))
{
gtm_putmsg_csa(CSA_ARG(csa) VARLSTCNT(6) ERR_BUFFLUFAILED, 4,
LEN_AND_LIT("MUPIP REORG ENCRYPT3"), db_name_len, db_name);
reg_status = ERR_MUNOFINISH;
break;
}
/* We are not resetting encryption_hash2_start_tn because we do not want the
* database to be reencryptable before the user had a chance to back it up.
*/
csd->encryption_hash_cutoff = UNSTARTED;
csd->non_null_iv = TRUE;
SET_AS_ENCRYPTED(csd->is_encrypted);
memcpy(csd->encryption_hash, csd->encryption_hash2, GTMCRYPT_RESERVED_HASH_LEN);
memset(csd->encryption_hash2, 0, GTMCRYPT_RESERVED_HASH_LEN);
/* A simple copy because gtmcrypt_key_t is a pointer type. */
csa->encr_key_handle = csa->encr_key_handle2;
csa->encr_key_handle2 = NULL;
cnl->reorg_encrypt_cycle++;
assert(NULL != csa->encr_ptr);
COPY_ENC_INFO(csd, csa->encr_ptr, cnl->reorg_encrypt_cycle;);
if (JNL_ENABLED(csd))
switch_journal_file(csa, csd);
DBG_RECORD_CRYPT_UPDATE(csd, csa, cnl, process_id);
}
/* We are done (although potentially due to an error or a Ctrl-C), so update file-header fields to store reorg's
* progress before exiting.
*/
if (!csa->now_crit)
{
get_ftok_semaphore(reg, csa);
grab_crit(reg, WS_94);
}
assert(csa->now_crit);
assert(UNSTARTED == csd->encryption_hash_cutoff || (SS_NORMAL != reg_status));
if (start_tn != csd->encryption_hash2_start_tn)
{ /* csd->encryption_hash2_start_tn changed since reorg started. discontinue the reorg */
util_out_print("Region !AD : Starting tn number changed during REORG (expected 0x!16@XQ but got 0x!16@XQ). "
"Stopping REORG.", TRUE, REG_LEN_STR(reg), &csd->encryption_hash2_start_tn, start_tn);
reg_status = ERR_MUNOFINISH;
} else
{
/* Flush all changes noted down in the file-header. */
if (!wcs_flu(WCSFLU_FLUSH_HDR)) /* wcs_flu assumes gv_cur_region is set (which it is in this routine) */
{
gtm_putmsg_csa(CSA_ARG(csa) VARLSTCNT(6) ERR_BUFFLUFAILED, 4,
LEN_AND_LIT("MUPIP REORG ENCRYPT4"), db_name_len, db_name);
reg_status = ERR_MUNOFINISH;
}
}
curr_tn = csd->trans_hist.curr_tn;
cnl->reorg_encrypt_pid = 0;
rel_crit(reg);
release_ftok_semaphore(reg, csa, csd);
/* Issue success or failure message for this region */
if (SS_NORMAL == reg_status)
{
util_out_print("Region !AD : Database is now FULLY ENCRYPTED with the following key: !AD",
TRUE, REG_LEN_STR(reg), key_len, key);
util_out_print("Region !AD : MUPIP REORG ENCRYPT finished", TRUE, REG_LEN_STR(reg));
send_msg_csa(CSA_ARG(csa) VARLSTCNT(6) ERR_MUREENCRYPTEND, 4, DB_LEN_STR(reg), process_id, &curr_tn);
} else
{
assert(ERR_MUNOFINISH == reg_status);
util_out_print("Region !AD : MUPIP REORG ENCRYPT incomplete. See above messages.",
TRUE, REG_LEN_STR(reg));
status = reg_status;
}
}
if (NULL != handles)
free(handles);
if (NULL != bptr)
free(bptr);
if (NULL != bml_lcl_buff)
free(bml_lcl_buff);
if (mu_ctrly_occurred || mu_ctrlc_occurred)
{
gtm_putmsg_csa(CSA_ARG(NULL) VARLSTCNT(1) ERR_REORGCTRLY);
status = ERR_MUNOFINISH;
}
EXIT_MUPIP_REORG(status);
}
/* This code is similar to that in wcs_recover.c and should be merged eventually. */
boolean_t wait_for_concurrent_reads(sgmnt_addrs *csa)
{
uint4 stuck_cnt, blocking_pid;
int4 total_stuck_cnt_left;
cache_rec_ptr_t cr, cr_top;
sgmnt_data_ptr_t csd;
total_stuck_cnt_left = MAX_WAIT_FOR_RIP * BUF_OWNER_STUCK;
assert(0 < total_stuck_cnt_left); /* safety net just in case the macro values grow and we overflow a signed int */
csd = csa->hdr;
assert(csa == cs_addrs);
assert(csd == cs_data);
assert(csa->now_crit);
cr = (cache_rec_ptr_t)csa->acc_meth.bg.cache_state->cache_array + csd->bt_buckets;
for (cr_top = cr + csd->n_bts; cr < cr_top; cr++)
{
for (stuck_cnt = 1; -1 != cr->read_in_progress; stuck_cnt++, total_stuck_cnt_left--)
{
blocking_pid = cr->r_epid;
assert(process_id != blocking_pid);
if ((BUF_OWNER_STUCK < stuck_cnt) || (0 > total_stuck_cnt_left))
{
if (0 != blocking_pid)
GET_C_STACK_FROM_SCRIPT("BUFOWNERSTUCK", process_id, blocking_pid, stuck_cnt);
send_msg_csa(CSA_ARG(csa) VARLSTCNT(8) ERR_BUFRDTIMEOUT, 6, process_id,
cr->blk, cr, blocking_pid, DB_LEN_STR(csa->region));
return FALSE;
}
if ((0 != blocking_pid) && is_proc_alive(blocking_pid, 0))
{ /* Kickstart the process taking a long time in case it was suspended */
UNIX_ONLY(continue_proc(blocking_pid));
}
wcs_sleep(stuck_cnt);
}
}
return TRUE;
}
void get_ftok_semaphore(gd_region *reg, sgmnt_addrs *csa)
{
unix_db_info *udi;
udi = FILE_INFO(reg);
if (!ftok_sem_lock(reg, FALSE))
rts_error_csa(CSA_ARG(NULL) VARLSTCNT(4) ERR_CRITSEMFAIL, 2, LEN_AND_STR(udi->fn));
assert(ftok_sem_reg == reg);
}
void release_ftok_semaphore(gd_region *reg, sgmnt_addrs *csa, sgmnt_data_ptr_t csd)
{
unix_db_info *udi;
udi = FILE_INFO(reg);
/* Second parameter decr_cnt is FALSE because we will decrement the counter semaphore as part of gds_rundown. This is just
* releasing the ftok in the middle of the reorg encrypt process and we do not want to modify the counter in those cases.
*/
if (!ftok_sem_release(reg, FALSE, FALSE))
rts_error_csa(CSA_ARG(csa) 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;
}
void switch_journal_file(sgmnt_addrs *csa, sgmnt_data_ptr_t csd)
{
jnl_private_control *jpc;
jnl_buffer_ptr_t jbp;
uint4 jnl_status;
assert(csa->now_crit);
SET_GBL_JREC_TIME; /* jnl_ensure_open/jnl_file_extend and its callees assume jgbl.gbl_jrec_time is set */
jpc = csa->jnl;
/* Before writing to jnlfile, adjust jgbl.gbl_jrec_time if needed to maintain time order of jnl records. This needs to be
* done BEFORE the jnl_ensure_open as that could write journal records (if it decides to switch to a new journal file).
*/
jbp = jpc->jnl_buff;
ADJUST_GBL_JREC_TIME(jgbl, jbp);
jnl_status = jnl_ensure_open(gv_cur_region, csa);
if (0 == jnl_status)
{
if (EXIT_ERR == SWITCH_JNL_FILE(jpc))
rts_error_csa(CSA_ARG(csa) VARLSTCNT(4) ERR_JNLEXTEND, 2, JNL_LEN_STR(csd));
} else
{
if (SS_NORMAL != jpc->status)
rts_error_csa(CSA_ARG(csa) VARLSTCNT(7) jnl_status, 4, JNL_LEN_STR(csd),
DB_LEN_STR(gv_cur_region), jpc->status);
else
rts_error_csa(CSA_ARG(csa) VARLSTCNT(6) jnl_status, 4, JNL_LEN_STR(csd),
DB_LEN_STR(gv_cur_region));
}
}
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