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2ee661ee65
SqMod/module/Vendor/MDBC/libmariadb/my_lib.c
Sandu Liviu Catalin 2ee661ee65 Integrate MySQL module.
2020-03-22 14:54:40 +02:00

615 lines
17 KiB
C
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/* 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., 51 Franklin Street, Fifth Floor, Boston,
MA 02111-1301, USA */
/* TODO: check for overun of memory for names. */
/* Convert MSDOS-TIME to standar time_t */
#define USES_TYPES /* sys/types is included */
#include "mysys_priv.h"
#include <m_string.h>
#include <my_dir.h> /* Structs used by my_dir,includes sys/types */
#include "mysys_err.h"
#if defined(HAVE_DIRENT_H)
# include <dirent.h>
# define NAMLEN(dirent) strlen((dirent)->d_name)
#else
#ifndef OS2
# define dirent direct
#endif
# define NAMLEN(dirent) (dirent)->d_namlen
# if defined(HAVE_SYS_NDIR_H)
# include <sys/ndir.h>
# endif
# if defined(HAVE_SYS_DIR_H)
# include <sys/dir.h>
# endif
# if defined(HAVE_NDIR_H)
# include <ndir.h>
# endif
# if defined(MSDOS) || defined(_WIN32)
# include <dos.h>
# ifdef __BORLANDC__
# include <dir.h>
# endif
# endif
#endif
#ifdef VMS
#include <rms.h>
#include <iodef.h>
#include <descrip.h>
#endif
#ifdef OS2
#include "my_os2dirsrch.h"
#endif
#if defined(THREAD) && defined(HAVE_READDIR_R)
#define READDIR(A,B,C) ((errno=readdir_r(A,B,&C)) != 0 || !C)
#else
#define READDIR(A,B,C) (!(C=readdir(A)))
#endif
#define STARTSIZE ONCE_ALLOC_INIT*8 /* some mallocmargin */
static int comp_names(struct fileinfo *a,struct fileinfo *b);
/* We need this because program don't know with malloc we used */
void my_dirend(MY_DIR *buffer)
{
DBUG_ENTER("my_dirend");
if (buffer)
my_free(buffer);
DBUG_VOID_RETURN;
} /* my_dirend */
/* Compare in sort of filenames */
static int comp_names(struct fileinfo *a, struct fileinfo *b)
{
return (strcmp(a->name,b->name));
} /* comp_names */
#if !defined(MSDOS) && !defined(_WIN32)
MY_DIR *my_dir(const char *path, myf MyFlags)
{
DIR *dirp;
struct dirent *dp;
struct fileinfo *fnames;
char *buffer, *obuffer, *tempptr;
uint fcnt,i,size,firstfcnt, maxfcnt,length;
char tmp_path[FN_REFLEN+1],*tmp_file;
my_ptrdiff_t diff;
bool eof;
#ifdef THREAD
char dirent_tmp[sizeof(struct dirent)+_POSIX_PATH_MAX+1];
#endif
DBUG_ENTER("my_dir");
DBUG_PRINT("my",("path: '%s' stat: %d MyFlags: %d",path,MyFlags));
#if defined(THREAD) && !defined(HAVE_READDIR_R)
pthread_mutex_lock(&THR_LOCK_open);
#endif
dirp = opendir(directory_file_name(tmp_path,(my_string) path));
size = STARTSIZE;
if (dirp == NULL || ! (buffer = (char *) my_malloc(size, MyFlags)))
goto error;
fcnt = 0;
tmp_file=strend(tmp_path);
firstfcnt = maxfcnt = (size - sizeof(MY_DIR)) /
(sizeof(struct fileinfo) + FN_LEN);
fnames= (struct fileinfo *) (buffer + sizeof(MY_DIR));
tempptr = (char *) (fnames + maxfcnt);
#ifdef THREAD
dp= (struct dirent*) dirent_tmp;
#else
dp=0;
#endif
eof=0;
for (;;)
{
while (fcnt < maxfcnt &&
!(eof= READDIR(dirp,(struct dirent*) dirent_tmp,dp)))
{
bzero((gptr) (fnames+fcnt),sizeof(fnames[0])); /* for purify */
fnames[fcnt].name = tempptr;
tempptr = strmov(tempptr,dp->d_name) + 1;
if (MyFlags & MY_WANT_STAT)
{
(void)strmov(tmp_file,dp->d_name);
(void)my_stat(tmp_path, &fnames[fcnt].mystat, MyFlags);
}
++fcnt;
}
if (eof)
break;
size += STARTSIZE; obuffer = buffer;
if (!(buffer = (char *) my_realloc((gptr) buffer, size,
MyFlags | MY_FREE_ON_ERROR)))
goto error; /* No memory */
length= (uint) (sizeof(struct fileinfo ) * firstfcnt);
diff= PTR_BYTE_DIFF(buffer , obuffer) + (int) length;
fnames= (struct fileinfo *) (buffer + sizeof(MY_DIR));
tempptr= ADD_TO_PTR(tempptr,diff,char*);
for (i = 0; i < maxfcnt; i++)
fnames[i].name = ADD_TO_PTR(fnames[i].name,diff,char*);
/* move filenames upp a bit */
maxfcnt += firstfcnt;
bmove_upp(tempptr,tempptr-length,
(uint) (tempptr- (char*) (fnames+maxfcnt)));
}
(void) closedir(dirp);
{
MY_DIR * s = (MY_DIR *) buffer;
s->number_off_files = (uint) fcnt;
s->dir_entry = fnames;
}
if (!(MyFlags & MY_DONT_SORT))
qsort((void *) fnames, (size_s) fcnt, sizeof(struct fileinfo),
(qsort_cmp) comp_names);
#if defined(THREAD) && !defined(HAVE_READDIR_R)
pthread_mutex_unlock(&THR_LOCK_open);
#endif
DBUG_RETURN((MY_DIR *) buffer);
error:
#if defined(THREAD) && !defined(HAVE_READDIR_R)
pthread_mutex_unlock(&THR_LOCK_open);
#endif
my_errno=errno;
if (dirp)
(void) closedir(dirp);
if (MyFlags & (MY_FAE+MY_WME))
my_error(EE_DIR,MYF(ME_BELL+ME_WAITTANG),path,my_errno);
DBUG_RETURN((MY_DIR *) NULL);
} /* my_dir */
/*
* Convert from directory name to filename.
* On VMS:
* xyzzy:[mukesh.emacs] => xyzzy:[mukesh]emacs.dir.1
* xyzzy:[mukesh] => xyzzy:[000000]mukesh.dir.1
* On UNIX, it's simple: just make sure there is a terminating /
* Returns pointer to dst;
*/
my_string directory_file_name (my_string dst, const char *src)
{
#ifndef VMS
/* Process as Unix format: just remove test the final slash. */
my_string end;
if (src[0] == 0)
src= (char*) "."; /* Use empty as current */
end=strmov(dst, src);
if (end[-1] != FN_LIBCHAR)
{
end[0]=FN_LIBCHAR; /* Add last '/' */
end[1]='\0';
}
return dst;
#else /* VMS */
long slen;
long rlen;
my_string ptr, rptr;
char bracket;
struct FAB fab = cc$rms_fab;
struct NAM nam = cc$rms_nam;
char esa[NAM$C_MAXRSS];
if (! src[0])
src="[.]"; /* Empty is == current dir */
slen = strlen (src) - 1;
if (src[slen] == FN_C_AFTER_DIR || src[slen] == FN_C_AFTER_DIR_2 ||
src[slen] == FN_DEVCHAR)
{
/* VMS style - convert [x.y.z] to [x.y]z, [x] to [000000]x */
fab.fab$l_fna = src;
fab.fab$b_fns = slen + 1;
fab.fab$l_nam = &nam;
fab.fab$l_fop = FAB$M_NAM;
nam.nam$l_esa = esa;
nam.nam$b_ess = sizeof esa;
nam.nam$b_nop |= NAM$M_SYNCHK;
/* We call SYS$PARSE to handle such things as [--] for us. */
if (SYS$PARSE(&fab, 0, 0) == RMS$_NORMAL)
{
slen = nam.nam$b_esl - 1;
if (esa[slen] == ';' && esa[slen - 1] == '.')
slen -= 2;
esa[slen + 1] = '\0';
src = esa;
}
if (src[slen] != FN_C_AFTER_DIR && src[slen] != FN_C_AFTER_DIR_2)
{
/* what about when we have logical_name:???? */
if (src[slen] == FN_DEVCHAR)
{ /* Xlate logical name and see what we get */
VOID(strmov(dst,src));
dst[slen] = 0; /* remove colon */
if (!(src = getenv (dst)))
return dst; /* Can't translate */
/* should we jump to the beginning of this procedure?
Good points: allows us to use logical names that xlate
to Unix names,
Bad points: can be a problem if we just translated to a device
name...
For now, I'll punt and always expect VMS names, and hope for
the best! */
slen = strlen (src) - 1;
if (src[slen] != FN_C_AFTER_DIR && src[slen] != FN_C_AFTER_DIR_2)
{ /* no recursion here! */
VOID(strmov(dst, src));
return(dst);
}
}
else
{ /* not a directory spec */
VOID(strmov(dst, src));
return(dst);
}
}
bracket = src[slen]; /* End char */
if (!(ptr = strchr (src, bracket - 2)))
{ /* no opening bracket */
VOID(strmov (dst, src));
return dst;
}
if (!(rptr = strrchr (src, '.')))
rptr = ptr;
slen = rptr - src;
VOID(strmake (dst, src, slen));
if (*rptr == '.')
{ /* Put bracket and add */
dst[slen++] = bracket; /* (rptr+1) after this */
}
else
{
/* If we have the top-level of a rooted directory (i.e. xx:[000000]),
then translate the device and recurse. */
if (dst[slen - 1] == ':'
&& dst[slen - 2] != ':' /* skip decnet nodes */
&& strcmp(src + slen, "[000000]") == 0)
{
dst[slen - 1] = '\0';
if ((ptr = getenv (dst))
&& (rlen = strlen (ptr) - 1) > 0
&& (ptr[rlen] == FN_C_AFTER_DIR || ptr[rlen] == FN_C_AFTER_DIR_2)
&& ptr[rlen - 1] == '.')
{
VOID(strmov(esa,ptr));
esa[rlen - 1] = FN_C_AFTER_DIR;
esa[rlen] = '\0';
return (directory_file_name (dst, esa));
}
else
dst[slen - 1] = ':';
}
VOID(strmov(dst+slen,"[000000]"));
slen += 8;
}
VOID(strmov(strmov(dst+slen,rptr+1)-1,".DIR.1"));
return dst;
}
VOID(strmov(dst, src));
if (dst[slen] == '/' && slen > 1)
dst[slen] = 0;
return dst;
#endif /* VMS */
} /* directory_file_name */
#elif defined(_WIN32)
/*
*****************************************************************************
** Read long filename using windows rutines
*****************************************************************************
*/
MY_DIR *my_dir(const char *path, myf MyFlags)
{
struct fileinfo *fnames;
char *buffer, *obuffer, *tempptr;
int eof,i,fcnt,firstfcnt,length,maxfcnt;
uint size;
#ifdef __BORLANDC__
struct ffblk find;
#else
struct _finddata_t find;
#endif
ushort mode;
char tmp_path[FN_REFLEN],*tmp_file,attrib;
my_ptrdiff_t diff;
#ifdef _WIN64
__int64 handle;
#else
long handle;
#endif
DBUG_ENTER("my_dir");
DBUG_PRINT("my",("path: '%s' stat: %d MyFlags: %d",path,MyFlags));
/* Put LIB-CHAR as last path-character if not there */
tmp_file=tmp_path;
if (!*path)
*tmp_file++ ='.'; /* From current dir */
tmp_file= strmov(tmp_file,path);
if (tmp_file[-1] == FN_DEVCHAR)
*tmp_file++= '.'; /* From current dev-dir */
if (tmp_file[-1] != FN_LIBCHAR)
*tmp_file++ =FN_LIBCHAR;
tmp_file[0]='*'; /* MSDOS needs this !??? */
tmp_file[1]='.';
tmp_file[2]='*';
tmp_file[3]='\0';
#ifdef __BORLANDC__
if ((handle= findfirst(tmp_path,&find,0)) == -1L)
goto error;
#else
if ((handle=_findfirst(tmp_path,&find)) == -1L)
goto error;
#endif
size = STARTSIZE;
firstfcnt = maxfcnt = (size - sizeof(MY_DIR)) /
(sizeof(struct fileinfo) + FN_LEN);
if ((buffer = (char *) my_malloc(size, MyFlags)) == 0)
goto error;
fnames= (struct fileinfo *) (buffer + sizeof(MY_DIR));
tempptr = (char *) (fnames + maxfcnt);
fcnt = 0;
for (;;)
{
do
{
fnames[fcnt].name = tempptr;
#ifdef __BORLANDC__
tempptr = strmov(tempptr,find.ff_name) + 1;
fnames[fcnt].mystat.st_size=find.ff_fsize;
fnames[fcnt].mystat.st_uid=fnames[fcnt].mystat.st_gid=0;
mode=MY_S_IREAD; attrib=find.ff_attrib;
#else
tempptr = strmov(tempptr,find.name) + 1;
fnames[fcnt].mystat.st_size=find.size;
fnames[fcnt].mystat.st_uid=fnames[fcnt].mystat.st_gid=0;
mode=MY_S_IREAD; attrib=find.attrib;
#endif
if (!(attrib & _A_RDONLY))
mode|=MY_S_IWRITE;
if (attrib & _A_SUBDIR)
mode|=MY_S_IFDIR;
fnames[fcnt].mystat.st_mode=mode;
#ifdef __BORLANDC__
fnames[fcnt].mystat.st_mtime=((uint32) find.ff_ftime);
#else
fnames[fcnt].mystat.st_mtime=((uint32) find.time_write);
#endif
++fcnt;
#ifdef __BORLANDC__
} while ((eof= findnext(&find)) == 0 && fcnt < maxfcnt);
#else
} while ((eof= _findnext(handle,&find)) == 0 && fcnt < maxfcnt);
#endif
DBUG_PRINT("test",("eof: %d errno: %d",eof,errno));
if (eof)
break;
size += STARTSIZE; obuffer = buffer;
if (!(buffer = (char *) my_realloc((gptr) buffer, size,
MyFlags | MY_FREE_ON_ERROR)))
goto error;
length= sizeof(struct fileinfo ) * firstfcnt;
diff= PTR_BYTE_DIFF(buffer , obuffer) +length;
fnames= (struct fileinfo *) (buffer + sizeof(MY_DIR));
tempptr= ADD_TO_PTR(tempptr,diff,char*);
for (i = 0; i < maxfcnt; i++)
fnames[i].name = ADD_TO_PTR(fnames[i].name,diff,char*);
/* move filenames upp a bit */
maxfcnt += firstfcnt;
bmove_upp(tempptr,ADD_TO_PTR(tempptr,-length,char*),
(int) PTR_BYTE_DIFF(tempptr,fnames+maxfcnt));
}
{
MY_DIR * s = (MY_DIR *) buffer;
s->number_off_files = (uint) fcnt;
s->dir_entry = fnames;
}
if (!(MyFlags & MY_DONT_SORT))
qsort(fnames,fcnt,sizeof(struct fileinfo),(qsort_cmp) comp_names);
#ifndef __BORLANDC__
_findclose(handle);
#endif
DBUG_RETURN((MY_DIR *) buffer);
error:
my_errno=errno;
#ifndef __BORLANDC__
if (handle != -1)
_findclose(handle);
#endif
if (MyFlags & MY_FAE+MY_WME)
my_error(EE_DIR,MYF(ME_BELL+ME_WAITTANG),path,errno);
DBUG_RETURN((MY_DIR *) NULL);
} /* my_dir */
#else /* MSDOS and not WIN32 */
/******************************************************************************
** At MSDOS you always get stat of files, but time is in packed MSDOS-format
******************************************************************************/
MY_DIR *my_dir(const char* path, myf MyFlags)
{
struct fileinfo *fnames;
char *buffer, *obuffer, *tempptr;
int eof,i,fcnt,firstfcnt,length,maxfcnt;
uint size;
struct find_t find;
ushort mode;
char tmp_path[FN_REFLEN],*tmp_file,attrib;
my_ptrdiff_t diff;
DBUG_ENTER("my_dir");
DBUG_PRINT("my",("path: '%s' stat: %d MyFlags: %d",path,MyFlags));
/* Put LIB-CHAR as last path-character if not there */
tmp_file=tmp_path;
if (!*path)
*tmp_file++ ='.'; /* From current dir */
tmp_file= strmov(tmp_file,path);
if (tmp_file[-1] == FN_DEVCHAR)
*tmp_file++= '.'; /* From current dev-dir */
if (tmp_file[-1] != FN_LIBCHAR)
*tmp_file++ =FN_LIBCHAR;
tmp_file[0]='*'; /* MSDOS needs this !??? */
tmp_file[1]='.';
tmp_file[2]='*';
tmp_file[3]='\0';
if (_dos_findfirst(tmp_path,_A_NORMAL | _A_SUBDIR, &find))
goto error;
size = STARTSIZE;
firstfcnt = maxfcnt = (size - sizeof(MY_DIR)) /
(sizeof(struct fileinfo) + FN_LEN);
if ((buffer = (char *) my_malloc(size, MyFlags)) == 0)
goto error;
fnames= (struct fileinfo *) (buffer + sizeof(MY_DIR));
tempptr = (char *) (fnames + maxfcnt);
fcnt = 0;
for (;;)
{
do
{
fnames[fcnt].name = tempptr;
tempptr = strmov(tempptr,find.name) + 1;
fnames[fcnt].mystat.st_size=find.size;
fnames[fcnt].mystat.st_uid=fnames[fcnt].mystat.st_gid=0;
mode=MY_S_IREAD; attrib=find.attrib;
if (!(attrib & _A_RDONLY))
mode|=MY_S_IWRITE;
if (attrib & _A_SUBDIR)
mode|=MY_S_IFDIR;
fnames[fcnt].mystat.st_mode=mode;
fnames[fcnt].mystat.st_mtime=((uint32) find.wr_date << 16) +
find.wr_time;
++fcnt;
} while ((eof= _dos_findnext(&find)) == 0 && fcnt < maxfcnt);
DBUG_PRINT("test",("eof: %d errno: %d",eof,errno));
if (eof)
break;
size += STARTSIZE; obuffer = buffer;
if (!(buffer = (char *) my_realloc((gptr) buffer, size,
MyFlags | MY_FREE_ON_ERROR)))
goto error;
length= sizeof(struct fileinfo ) * firstfcnt;
diff= PTR_BYTE_DIFF(buffer , obuffer) +length;
fnames= (struct fileinfo *) (buffer + sizeof(MY_DIR));
tempptr= ADD_TO_PTR(tempptr,diff,char*);
for (i = 0; i < maxfcnt; i++)
fnames[i].name = ADD_TO_PTR(fnames[i].name,diff,char*);
/* move filenames upp a bit */
maxfcnt += firstfcnt;
bmove_upp(tempptr,ADD_TO_PTR(tempptr,-length,char*),
(int) PTR_BYTE_DIFF(tempptr,fnames+maxfcnt));
}
{
MY_DIR * s = (MY_DIR *) buffer;
s->number_off_files = (uint) fcnt;
s->dir_entry = fnames;
}
if (!(MyFlags & MY_DONT_SORT))
qsort(fnames,fcnt,sizeof(struct fileinfo),(qsort_cmp) comp_names);
DBUG_RETURN((MY_DIR *) buffer);
error:
if (MyFlags & MY_FAE+MY_WME)
my_error(EE_DIR,MYF(ME_BELL+ME_WAITTANG),path,errno);
DBUG_RETURN((MY_DIR *) NULL);
} /* my_dir */
#endif /* WIN32 && MSDOS */
/****************************************************************************
** File status
** Note that MY_STAT is assumed to be same as struct stat
****************************************************************************/
int my_fstat(int Filedes, MY_STAT *stat_area, myf MyFlags )
{
DBUG_ENTER("my_fstat");
DBUG_PRINT("my",("fd: %d MyFlags: %d",Filedes,MyFlags));
DBUG_RETURN(fstat(Filedes, (struct stat *) stat_area));
}
MY_STAT *my_stat(const char *path, MY_STAT *stat_area, myf my_flags)
{
int m_used;
DBUG_ENTER("my_stat");
DBUG_PRINT("my", ("path: '%s', stat_area: %lx, MyFlags: %d", path,
(unsigned char *) stat_area, my_flags));
if ((m_used= (stat_area == NULL)))
if (!(stat_area = (MY_STAT *) my_malloc(sizeof(MY_STAT), my_flags)))
goto error;
if ( ! stat((my_string) path, (struct stat *) stat_area) )
DBUG_RETURN(stat_area);
my_errno=errno;
if (m_used) /* Free if new area */
my_free(stat_area);
error:
if (my_flags & (MY_FAE+MY_WME))
{
my_error(EE_STAT, MYF(ME_BELL+ME_WAITTANG),path,my_errno);
DBUG_RETURN((MY_STAT *) NULL);
}
DBUG_RETURN((MY_STAT *) NULL);
} /* my_stat */
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