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
|
/* Copyright (C) 2000 MySQL AB & MySQL Finland AB & TCX DataKonsult AB
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with this library; if not, write to the Free
Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
MA 02111-1307, USA */
#define USES_TYPES
#include "mysys_priv.h"
#include <my_dir.h>
#include "mysys_err.h"
#include <errno.h>
#if defined(MSDOS) || defined(__WIN__)
#include <share.h>
#endif
/*
** Create a new file
** Arguments:
** Path-name of file
** Read | write on file (umask value)
** Read & Write on open file
** Special flags
*/
File my_create(const char *FileName, int CreateFlags, int access_flags,
myf MyFlags)
{
int fd;
DBUG_ENTER("my_create");
DBUG_PRINT("my",("Name: '%s' CreateFlags: %d AccessFlags: %d MyFlags: %d",
FileName, CreateFlags, access_flags, MyFlags));
#if !defined(NO_OPEN_3)
fd = open((my_string) FileName, access_flags | O_CREAT,
CreateFlags ? CreateFlags : my_umask);
#elif defined(VMS)
fd = open((my_string) FileName, access_flags | O_CREAT, 0,
"ctx=stm","ctx=bin");
#elif defined(MSDOS) || defined(__WIN__)
if (access_flags & O_SHARE)
fd = sopen((my_string) FileName, access_flags | O_CREAT | O_BINARY,
SH_DENYNO, MY_S_IREAD | MY_S_IWRITE);
else
fd = open((my_string) FileName, access_flags | O_CREAT | O_BINARY,
MY_S_IREAD | MY_S_IWRITE);
#else
fd = open(FileName, access_flags);
#endif
if (fd >= 0)
{
if ((int) fd >= MY_NFILE)
{
#if defined(THREAD) && !defined(HAVE_PREAD)
(void) my_close(fd,MyFlags);
my_errno=EMFILE;
if (MyFlags & (MY_FFNF | MY_FAE | MY_WME))
my_error(EE_OUT_OF_FILERESOURCES, MYF(ME_BELL+ME_WAITTANG),
FileName, my_errno);
DBUG_RETURN(-1);
#else
thread_safe_increment(my_file_opened,&THR_LOCK_open);
DBUG_PRINT("exit",("fd: %d",fd));
DBUG_RETURN(fd); /* safeguard */
#endif
}
if ((my_file_info[fd].name = (char*) my_strdup(FileName,MyFlags)))
{
my_file_opened++;
my_file_info[fd].type = FILE_BY_CREATE;
#if defined(THREAD) && !defined(HAVE_PREAD)
pthread_mutex_init(&my_file_info[fd].mutex,NULL);
#endif
DBUG_PRINT("exit",("fd: %d",fd));
DBUG_RETURN(fd);
}
VOID(my_close(fd,MyFlags));
my_errno=ENOMEM;
}
else
my_errno=errno;
if (MyFlags & (MY_FFNF | MY_FAE | MY_WME))
my_error(EE_CANTCREATEFILE, MYF(ME_BELL+ME_WAITTANG), FileName,my_errno);
DBUG_RETURN(-1);
} /* my_create */
|
