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mariadb/mysys/my_init.c
monty@mysql.com/narttu.mysql.fi 088e2395f1 WL#3817: Simplify string / memory area types and make things more consistent (first part) 
The following type conversions was done:

- Changed byte to uchar
- Changed gptr to uchar*
- Change my_string to char *
- Change my_size_t to size_t
- Change size_s to size_t

Removed declaration of byte, gptr, my_string, my_size_t and size_s. 

Following function parameter changes was done:
- All string functions in mysys/strings was changed to use size_t
  instead of uint for string lengths.
- All read()/write() functions changed to use size_t (including vio).
- All protocoll functions changed to use size_t instead of uint
- Functions that used a pointer to a string length was changed to use size_t*
- Changed malloc(), free() and related functions from using gptr to use void *
  as this requires fewer casts in the code and is more in line with how the
  standard functions work.
- Added extra length argument to dirname_part() to return the length of the
  created string.
- Changed (at least) following functions to take uchar* as argument:
  - db_dump()
  - my_net_write()
  - net_write_command()
  - net_store_data()
  - DBUG_DUMP()
  - decimal2bin() & bin2decimal()
- Changed my_compress() and my_uncompress() to use size_t. Changed one
  argument to my_uncompress() from a pointer to a value as we only return
  one value (makes function easier to use).
- Changed type of 'pack_data' argument to packfrm() to avoid casts.
- Changed in readfrm() and writefrom(), ha_discover and handler::discover()
  the type for argument 'frmdata' to uchar** to avoid casts.
- Changed most Field functions to use uchar* instead of char* (reduced a lot of
  casts).
- Changed field->val_xxx(xxx, new_ptr) to take const pointers.

Other changes:
- Removed a lot of not needed casts
- Added a few new cast required by other changes
- Added some cast to my_multi_malloc() arguments for safety (as string lengths
  needs to be uint, not size_t).
- Fixed all calls to hash-get-key functions to use size_t*. (Needed to be done
  explicitely as this conflict was often hided by casting the function to
  hash_get_key).
- Changed some buffers to memory regions to uchar* to avoid casts.
- Changed some string lengths from uint to size_t.
- Changed field->ptr to be uchar* instead of char*. This allowed us to
  get rid of a lot of casts.
- Some changes from true -> TRUE, false -> FALSE, unsigned char -> uchar
- Include zlib.h in some files as we needed declaration of crc32()
- Changed MY_FILE_ERROR to be (size_t) -1.
- Changed many variables to hold the result of my_read() / my_write() to be
  size_t. This was needed to properly detect errors (which are
  returned as (size_t) -1).
- Removed some very old VMS code
- Changed packfrm()/unpackfrm() to not be depending on uint size
  (portability fix)
- Removed windows specific code to restore cursor position as this
  causes slowdown on windows and we should not mix read() and pread()
  calls anyway as this is not thread safe. Updated function comment to
  reflect this. Changed function that depended on original behavior of
  my_pwrite() to itself restore the cursor position (one such case).
- Added some missing checking of return value of malloc().
- Changed definition of MOD_PAD_CHAR_TO_FULL_LENGTH to avoid 'long' overflow.
- Changed type of table_def::m_size from my_size_t to ulong to reflect that
  m_size is the number of elements in the array, not a string/memory
  length.
- Moved THD::max_row_length() to table.cc (as it's not depending on THD).
  Inlined max_row_length_blob() into this function.
- More function comments
- Fixed some compiler warnings when compiled without partitions.
- Removed setting of LEX_STRING() arguments in declaration (portability fix).
- Some trivial indentation/variable name changes.
- Some trivial code simplifications:
  - Replaced some calls to alloc_root + memcpy to use
    strmake_root()/strdup_root().
  - Changed some calls from memdup() to strmake() (Safety fix)
  - Simpler loops in client-simple.c
2007-05-10 12:59:39 +03:00

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/* Copyright (C) 2000-2003 MySQL AB
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; version 2 of the License.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
#include "mysys_priv.h"
#include "my_static.h"
#include "mysys_err.h"
#include <m_string.h>
#include <m_ctype.h>
#include <signal.h>
#ifdef VMS
#include <my_static.c>
#include <m_ctype.h>
#endif
#ifdef __WIN__
#ifdef _MSC_VER
#include <locale.h>
#include <crtdbg.h>
#endif
my_bool have_tcpip=0;
static void my_win_init(void);
static my_bool win32_have_tcpip(void);
static my_bool win32_init_tcp_ip();
#else
#define my_win_init()
#endif
#ifdef __NETWARE__
static void netware_init();
#else
#define netware_init()
#endif
my_bool my_init_done= 0;
uint mysys_usage_id= 0; /* Incremented for each my_init() */
static ulong atoi_octal(const char *str)
{
long int tmp;
while (*str && my_isspace(&my_charset_latin1, *str))
str++;
str2int(str,
(*str == '0' ? 8 : 10), /* Octalt or decimalt */
0, INT_MAX, &tmp);
return (ulong) tmp;
}
/*
Init my_sys functions and my_sys variabels
SYNOPSIS
my_init()
RETURN
0 ok
1 Couldn't initialize environment
*/
my_bool my_init(void)
{
char * str;
if (my_init_done)
return 0;
my_init_done=1;
mysys_usage_id++;
my_umask= 0660; /* Default umask for new files */
my_umask_dir= 0700; /* Default umask for new directories */
#if defined(THREAD) && defined(SAFE_MUTEX)
safe_mutex_global_init(); /* Must be called early */
#endif
netware_init();
#ifdef THREAD
#if defined(HAVE_PTHREAD_INIT)
pthread_init(); /* Must be called before DBUG_ENTER */
#endif
if (my_thread_global_init())
return 1;
#if !defined( __WIN__) && !defined(__NETWARE__)
sigfillset(&my_signals); /* signals blocked by mf_brkhant */
#endif
#endif /* THREAD */
{
DBUG_ENTER("my_init");
DBUG_PROCESS((char*) (my_progname ? my_progname : "unknown"));
if (!home_dir)
{ /* Don't initialize twice */
my_win_init();
if ((home_dir=getenv("HOME")) != 0)
home_dir=intern_filename(home_dir_buff,home_dir);
#ifndef VMS
/* Default creation of new files */
if ((str=getenv("UMASK")) != 0)
my_umask=(int) (atoi_octal(str) | 0600);
/* Default creation of new dir's */
if ((str=getenv("UMASK_DIR")) != 0)
my_umask_dir=(int) (atoi_octal(str) | 0700);
#endif
#ifdef VMS
init_ctype(); /* Stupid linker don't link _ctype.c */
#endif
DBUG_PRINT("exit",("home: '%s'",home_dir));
}
#ifdef __WIN__
win32_init_tcp_ip();
#endif
DBUG_RETURN(0);
}
} /* my_init */
/* End my_sys */
void my_end(int infoflag)
{
/*
this code is suboptimal to workaround a bug in
Sun CC: Sun C++ 5.6 2004/06/02 for x86, and should not be
optimized until this compiler is not in use anymore
*/
FILE *info_file= DBUG_FILE;
my_bool print_info= (info_file != stderr);
/* We do not use DBUG_ENTER here, as after cleanup DBUG is no longer
operational, so we cannot use DBUG_RETURN.
*/
DBUG_PRINT("info",("Shutting down"));
if (!info_file)
{
info_file= stderr;
print_info= 0;
}
DBUG_PRINT("info",("Shutting down: print_info: %d", print_info));
if ((infoflag & MY_CHECK_ERROR) || print_info)
{ /* Test if some file is left open */
if (my_file_opened | my_stream_opened)
{
sprintf(errbuff[0],EE(EE_OPEN_WARNING),my_file_opened,my_stream_opened);
(void) my_message_no_curses(EE_OPEN_WARNING,errbuff[0],ME_BELL);
DBUG_PRINT("error",("%s",errbuff[0]));
my_print_open_files();
}
}
free_charsets();
my_error_unregister_all();
my_once_free();
if ((infoflag & MY_GIVE_INFO) || print_info)
{
#ifdef HAVE_GETRUSAGE
struct rusage rus;
#ifdef HAVE_purify
/* Purify assumes that rus is uninitialized after getrusage call */
bzero((char*) &rus, sizeof(rus));
#endif
if (!getrusage(RUSAGE_SELF, &rus))
fprintf(info_file,"\n\
User time %.2f, System time %.2f\n\
Maximum resident set size %ld, Integral resident set size %ld\n\
Non-physical pagefaults %ld, Physical pagefaults %ld, Swaps %ld\n\
Blocks in %ld out %ld, Messages in %ld out %ld, Signals %ld\n\
Voluntary context switches %ld, Involuntary context switches %ld\n",
(rus.ru_utime.tv_sec * SCALE_SEC +
rus.ru_utime.tv_usec / SCALE_USEC) / 100.0,
(rus.ru_stime.tv_sec * SCALE_SEC +
rus.ru_stime.tv_usec / SCALE_USEC) / 100.0,
rus.ru_maxrss, rus.ru_idrss,
rus.ru_minflt, rus.ru_majflt,
rus.ru_nswap, rus.ru_inblock, rus.ru_oublock,
rus.ru_msgsnd, rus.ru_msgrcv, rus.ru_nsignals,
rus.ru_nvcsw, rus.ru_nivcsw);
#endif
#if defined(__NETWARE__) && !defined(__WIN__)
fprintf(info_file,"\nRun time: %.1f\n",(double) clock()/CLOCKS_PER_SEC);
#endif
#if defined(SAFEMALLOC)
TERMINATE(stderr); /* Give statistic on screen */
#elif defined(__WIN__) && defined(_MSC_VER)
_CrtSetReportMode( _CRT_WARN, _CRTDBG_MODE_FILE );
_CrtSetReportFile( _CRT_WARN, _CRTDBG_FILE_STDERR );
_CrtSetReportMode( _CRT_ERROR, _CRTDBG_MODE_FILE );
_CrtSetReportFile( _CRT_ERROR, _CRTDBG_FILE_STDERR );
_CrtSetReportMode( _CRT_ASSERT, _CRTDBG_MODE_FILE );
_CrtSetReportFile( _CRT_ASSERT, _CRTDBG_FILE_STDERR );
_CrtCheckMemory();
_CrtDumpMemoryLeaks();
#endif
}
if (!(infoflag & MY_DONT_FREE_DBUG))
{
DBUG_END(); /* Must be done before my_thread_end */
}
#ifdef THREAD
my_thread_end();
my_thread_global_end();
#if defined(SAFE_MUTEX)
/*
Check on destroying of mutexes. A few may be left that will get cleaned
up by C++ destructors
*/
safe_mutex_end((infoflag & (MY_GIVE_INFO | MY_CHECK_ERROR)) ? stderr :
(FILE *) 0);
#endif /* defined(SAFE_MUTEX) */
#endif /* THREAD */
#ifdef __WIN__
if (have_tcpip)
WSACleanup();
#endif /* __WIN__ */
my_init_done=0;
} /* my_end */
#ifdef __WIN__
/*
This code is specially for running MySQL, but it should work in
other cases too.
Inizializzazione delle variabili d'ambiente per Win a 32 bit.
Vengono inserite nelle variabili d'ambiente (utilizzando cosi'
le funzioni getenv e putenv) i valori presenti nelle chiavi
del file di registro:
HKEY_LOCAL_MACHINE\software\MySQL
Se la kiave non esiste nonn inserisce nessun valore
*/
/* Crea la stringa d'ambiente */
void setEnvString(char *ret, const char *name, const char *value)
{
DBUG_ENTER("setEnvString");
strxmov(ret, name,"=",value,NullS);
DBUG_VOID_RETURN ;
}
/*
my_parameter_handler
Invalid parameter handler we will use instead of the one "baked"
into the CRT for MSC v8. This one just prints out what invalid
parameter was encountered. By providing this routine, routines like
lseek will return -1 when we expect them to instead of crash.
*/
void my_parameter_handler(const wchar_t * expression, const wchar_t * function,
const wchar_t * file, unsigned int line,
uintptr_t pReserved)
{
DBUG_PRINT("my",("Expression: %s function: %s file: %s, line: %d",
expression, function, file, line));
}
static void my_win_init(void)
{
HKEY hSoftMysql ;
DWORD dimName = 256 ;
DWORD dimData = 1024 ;
DWORD dimNameValueBuffer = 256 ;
DWORD dimDataValueBuffer = 1024 ;
DWORD indexValue = 0 ;
long retCodeEnumValue ;
char NameValueBuffer[256] ;
char DataValueBuffer[1024] ;
char EnvString[1271] ;
const char *targetKey = "Software\\MySQL" ;
DBUG_ENTER("my_win_init");
setlocale(LC_CTYPE, ""); /* To get right sortorder */
#if defined(_MSC_VER)
#if _MSC_VER < 1300
/*
Clear the OS system variable TZ and avoid the 100% CPU usage
Only for old versions of Visual C++
*/
_putenv( "TZ=" );
#endif
#if _MSC_VER >= 1400
/* this is required to make crt functions return -1 appropriately */
_set_invalid_parameter_handler(my_parameter_handler);
#endif
#endif
_tzset();
/* apre la chiave HKEY_LOCAL_MACHINES\software\MySQL */
if (RegOpenKeyEx(HKEY_LOCAL_MACHINE,(LPCTSTR)targetKey,0,
KEY_READ,&hSoftMysql) != ERROR_SUCCESS)
DBUG_VOID_RETURN;
/*
** Ne legge i valori e li inserisce nell'ambiente
** suppone che tutti i valori letti siano di tipo stringa + '\0'
** Legge il valore con indice 0 e lo scarta
*/
retCodeEnumValue = RegEnumValue(hSoftMysql, indexValue++,
(LPTSTR)NameValueBuffer, &dimNameValueBuffer,
NULL, NULL, (LPBYTE)DataValueBuffer,
&dimDataValueBuffer) ;
while (retCodeEnumValue != ERROR_NO_MORE_ITEMS)
{
char *my_env;
/* Crea la stringa d'ambiente */
setEnvString(EnvString, NameValueBuffer, DataValueBuffer) ;
/* Inserisce i dati come variabili d'ambiente */
my_env=strdup(EnvString); /* variable for putenv must be allocated ! */
putenv(my_env) ;
dimNameValueBuffer = dimName ;
dimDataValueBuffer = dimData ;
retCodeEnumValue = RegEnumValue(hSoftMysql, indexValue++,
NameValueBuffer, &dimNameValueBuffer,
NULL, NULL, (LPBYTE)DataValueBuffer,
&dimDataValueBuffer) ;
}
/* chiude la chiave */
RegCloseKey(hSoftMysql) ;
DBUG_VOID_RETURN ;
}
/*------------------------------------------------------------------
Name: CheckForTcpip| Desc: checks if tcpip has been installed on system
According to Microsoft Developers documentation the first registry
entry should be enough to check if TCP/IP is installed, but as expected
this doesn't work on all Win32 machines :(
------------------------------------------------------------------*/
#define TCPIPKEY "SYSTEM\\CurrentControlSet\\Services\\Tcpip\\Parameters"
#define WINSOCK2KEY "SYSTEM\\CurrentControlSet\\Services\\Winsock2\\Parameters"
#define WINSOCKKEY "SYSTEM\\CurrentControlSet\\Services\\Winsock\\Parameters"
static my_bool win32_have_tcpip(void)
{
HKEY hTcpipRegKey;
if (RegOpenKeyEx ( HKEY_LOCAL_MACHINE, TCPIPKEY, 0, KEY_READ,
&hTcpipRegKey) != ERROR_SUCCESS)
{
if (RegOpenKeyEx ( HKEY_LOCAL_MACHINE, WINSOCK2KEY, 0, KEY_READ,
&hTcpipRegKey) != ERROR_SUCCESS)
{
if (RegOpenKeyEx ( HKEY_LOCAL_MACHINE, WINSOCKKEY, 0, KEY_READ,
&hTcpipRegKey) != ERROR_SUCCESS)
if (!getenv("HAVE_TCPIP") || have_tcpip) /* Provide a workaround */
return (FALSE);
}
}
RegCloseKey ( hTcpipRegKey);
return (TRUE);
}
static my_bool win32_init_tcp_ip()
{
if (win32_have_tcpip())
{
WORD wVersionRequested = MAKEWORD( 2, 0 );
WSADATA wsaData;
/* Be a good citizen: maybe another lib has already initialised
sockets, so dont clobber them unless necessary */
if (WSAStartup( wVersionRequested, &wsaData ))
{
/* Load failed, maybe because of previously loaded
incompatible version; try again */
WSACleanup( );
if (!WSAStartup( wVersionRequested, &wsaData ))
have_tcpip=1;
}
else
{
if (wsaData.wVersion != wVersionRequested)
{
/* Version is no good, try again */
WSACleanup( );
if (!WSAStartup( wVersionRequested, &wsaData ))
have_tcpip=1;
}
else
have_tcpip=1;
}
}
return(0);
}
#endif /* __WIN__ */
#ifdef __NETWARE__
/*
Basic initialisation for netware
*/
static void netware_init()
{
char cwd[PATH_MAX], *name;
DBUG_ENTER("netware_init");
/* init only if we are not a client library */
if (my_progname)
{
#if SUPPORTED_BY_LIBC /* Removed until supported in Libc */
struct termios tp;
/* Disable control characters */
tcgetattr(STDIN_FILENO, &tp);
tp.c_cc[VINTR] = _POSIX_VDISABLE;
tp.c_cc[VEOF] = _POSIX_VDISABLE;
tp.c_cc[VSUSP] = _POSIX_VDISABLE;
tcsetattr(STDIN_FILENO, TCSANOW, &tp);
#endif /* SUPPORTED_BY_LIBC */
/* With stdout redirection */
if (!isatty(STDOUT_FILENO))
{
setscreenmode(SCR_AUTOCLOSE_ON_EXIT); /* auto close the screen */
}
else
{
setscreenmode(SCR_NO_MODE); /* keep the screen up */
}
/* Parse program name and change to base format */
name= (char*) my_progname;
for (; *name; name++)
{
if (*name == '\\')
{
*name = '/';
}
else
{
*name = tolower(*name);
}
}
}
DBUG_VOID_RETURN;
}
#endif /* __NETWARE__ */
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