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
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
|
/*-
* See the file LICENSE for redistribution information.
*
* Copyright (c) 1997-2009 Oracle. All rights reserved.
*
* $Id$
*/
#include "db_config.h"
#include "db_int.h"
/*
* __os_exists --
* Return if the file exists.
*
* PUBLIC: int __os_exists __P((ENV *, const char *, int *));
*/
int
__os_exists(env, path, isdirp)
ENV *env;
const char *path;
int *isdirp;
{
DB_ENV *dbenv;
struct stat sb;
int ret;
dbenv = env == NULL ? NULL : env->dbenv;
if (dbenv != NULL &&
FLD_ISSET(dbenv->verbose, DB_VERB_FILEOPS | DB_VERB_FILEOPS_ALL))
__db_msg(env, "fileops: stat %s", path);
if (DB_GLOBAL(j_exists) != NULL)
return (DB_GLOBAL(j_exists)(path, isdirp));
RETRY_CHK((stat(CHAR_STAR_CAST path, &sb)), ret);
if (ret != 0)
return (__os_posix_err(ret));
#if !defined(S_ISDIR) || defined(STAT_MACROS_BROKEN)
#undef S_ISDIR
#ifdef _S_IFDIR
#define S_ISDIR(m) (_S_IFDIR & (m))
#else
#define S_ISDIR(m) (((m) & 0170000) == 0040000)
#endif
#endif
if (isdirp != NULL)
*isdirp = S_ISDIR(sb.st_mode);
return (0);
}
/*
* __os_ioinfo --
* Return file size and I/O size; abstracted to make it easier
* to replace.
*
* PUBLIC: int __os_ioinfo __P((ENV *, const char *,
* PUBLIC: DB_FH *, u_int32_t *, u_int32_t *, u_int32_t *));
*/
int
__os_ioinfo(env, path, fhp, mbytesp, bytesp, iosizep)
ENV *env;
const char *path;
DB_FH *fhp;
u_int32_t *mbytesp, *bytesp, *iosizep;
{
struct stat sb;
int ret;
if (DB_GLOBAL(j_ioinfo) != NULL)
return (DB_GLOBAL(j_ioinfo)(path,
fhp->fd, mbytesp, bytesp, iosizep));
DB_ASSERT(env, F_ISSET(fhp, DB_FH_OPENED) && fhp->fd != -1);
RETRY_CHK((fstat(fhp->fd, &sb)), ret);
if (ret != 0) {
__db_syserr(env, ret, "fstat");
return (__os_posix_err(ret));
}
/* Return the size of the file. */
if (mbytesp != NULL)
*mbytesp = (u_int32_t)(sb.st_size / MEGABYTE);
if (bytesp != NULL)
*bytesp = (u_int32_t)(sb.st_size % MEGABYTE);
/*
* Return the underlying filesystem I/O size, if available.
*
* XXX
* Check for a 0 size -- the HP MPE/iX architecture has st_blksize,
* but it's always 0.
*/
#ifdef HAVE_STRUCT_STAT_ST_BLKSIZE
if (iosizep != NULL && (*iosizep = sb.st_blksize) == 0)
*iosizep = DB_DEF_IOSIZE;
#else
if (iosizep != NULL)
*iosizep = DB_DEF_IOSIZE;
#endif
return (0);
}
|
