1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
|
/****************************************************************
* *
* Copyright (c) 2009-2020 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 "gtm_fcntl.h"
#include "gtm_stat.h"
#include "gtm_unistd.h"
#include "gtm_permissions.h"
#include "gtm_string.h"
#include "gtm_stdio.h"
#include "gtm_stdlib.h"
#include "gtm_tempnam.h"
#include "gtm_time.h"
#include "gdsroot.h"
#include "gdskill.h"
#include "gtm_facility.h"
#include "fileinfo.h"
#include "gdsbt.h"
#include "gdsblk.h"
#include "gdsfhead.h"
#include "filestruct.h"
#include "error.h"
#include "eintr_wrappers.h"
#include "gtmio.h"
#include "shmpool.h"
#include "db_snapshot.h"
#include "mupip_exit.h"
error_def(ERR_INTEGERRS);
error_def(ERR_SSFILOPERR);
error_def(ERR_SSPREMATEOF);
/*
* This function is called to read the before image from the snapshot file
*/
GBLREF sgmnt_addrs *cs_addrs;
GBLREF gd_region *gv_cur_region;
GBLREF util_snapshot_ptr_t util_ss_ptr;
void ss_read_block(snapshot_context_ptr_t lcl_ss_ctx, block_id blk, sm_uc_ptr_t blk_buff_ptr)
{
int blk_size, pread_res;
boolean_t issue_error;
off_t blk_offset;
sgmnt_addrs *csa;
sgmnt_data_ptr_t csd;
shm_snapshot_ptr_t ss_shm_ptr;
assert(-1 != lcl_ss_ctx->shdw_fd);
csa = cs_addrs;
csd = csa->hdr;
ss_shm_ptr = lcl_ss_ctx->ss_shm_ptr;
DBG_ENSURE_PTR_WITHIN_SS_BOUNDS(csa, (sm_uc_ptr_t)ss_shm_ptr);
blk_size = csd->blk_size;
blk_offset = (off_t)BLK_ZERO_OFF(lcl_ss_ctx->shadow_vbn) + (off_t)blk * blk_size;
LSEEKREAD(lcl_ss_ctx->shdw_fd, blk_offset, (uchar_ptr_t) blk_buff_ptr, blk_size, pread_res);
if (0 != pread_res)
{
if (-1 == pread_res)
{
gtm_putmsg_csa(CSA_ARG(csa) VARLSTCNT(7) ERR_SSPREMATEOF, 5, &blk, blk_size, blk_offset,
LEN_AND_STR(ss_shm_ptr->ss_info.shadow_file));
} else
{
gtm_putmsg_csa(CSA_ARG(csa) VARLSTCNT(7) ERR_SSFILOPERR, 4, LEN_AND_LIT("read"),
LEN_AND_STR(ss_shm_ptr->ss_info.shadow_file), pread_res);
}
mupip_exit(ERR_INTEGERRS);
}
}
|
