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authorXanadu <none@none>2010-09-07 01:26:57 +0200
committerXanadu <none@none>2010-09-07 01:26:57 +0200
commit220c20729441931d26626f4370bbb613a9185e9e (patch)
treed93174fdc1f9e2e556aa4ef035657023063f08b2 /dep/mysqllite/mysys/my_fopen.c
parentda5569bee68be1dcd416cdbca7584f9ef5e739ee (diff)
BuildSystem/Windows: * Added 5.1.50 (GA) MySQL client sources for crosscompiling (or lazy) windows people.
* Added an option to autosearch for your own installed MySQL as before. Note that default setting is to use the internal MySQL. * You can now build 32-bit even if your MySQL is x64 and vice versa. * Recommended MySQL server version for use with provided MySQL client sources is 5.1.x. * If your server version is different, let CMake autofind and use it instead (check EXTERNAL_MYSQL option) --HG-- branch : trunk
Diffstat (limited to 'dep/mysqllite/mysys/my_fopen.c')
-rw-r--r--dep/mysqllite/mysys/my_fopen.c223
1 files changed, 223 insertions, 0 deletions
diff --git a/dep/mysqllite/mysys/my_fopen.c b/dep/mysqllite/mysys/my_fopen.c
new file mode 100644
index 00000000000..44156da6ae3
--- /dev/null
+++ b/dep/mysqllite/mysys/my_fopen.c
@@ -0,0 +1,223 @@
+/* Copyright (C) 2000 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 <errno.h>
+#include "mysys_err.h"
+
+static void make_ftype(char * to,int flag);
+
+/*
+ Open a file as stream
+
+ SYNOPSIS
+ my_fopen()
+ FileName Path-name of file
+ Flags Read | write | append | trunc (like for open())
+ MyFlags Flags for handling errors
+
+ RETURN
+ 0 Error
+ # File handler
+*/
+
+FILE *my_fopen(const char *filename, int flags, myf MyFlags)
+{
+ FILE *fd;
+ char type[5];
+ DBUG_ENTER("my_fopen");
+ DBUG_PRINT("my",("Name: '%s' flags: %d MyFlags: %d",
+ filename, flags, MyFlags));
+ /*
+ if we are not creating, then we need to use my_access to make sure
+ the file exists since Windows doesn't handle files like "com1.sym"
+ very well
+ */
+#ifdef __WIN__
+ if (check_if_legal_filename(filename))
+ {
+ errno= EACCES;
+ fd= 0;
+ }
+ else
+#endif
+ {
+ make_ftype(type,flags);
+ fd = fopen(filename, type);
+ }
+
+ if (fd != 0)
+ {
+ /*
+ The test works if MY_NFILE < 128. The problem is that fileno() is char
+ on some OS (SUNOS). Actually the filename save isn't that important
+ so we can ignore if this doesn't work.
+ */
+ if ((uint) fileno(fd) >= my_file_limit)
+ {
+ thread_safe_increment(my_stream_opened,&THR_LOCK_open);
+ DBUG_RETURN(fd); /* safeguard */
+ }
+ pthread_mutex_lock(&THR_LOCK_open);
+ if ((my_file_info[fileno(fd)].name = (char*)
+ my_strdup(filename,MyFlags)))
+ {
+ my_stream_opened++;
+ my_file_total_opened++;
+ my_file_info[fileno(fd)].type = STREAM_BY_FOPEN;
+ pthread_mutex_unlock(&THR_LOCK_open);
+ DBUG_PRINT("exit",("stream: 0x%lx", (long) fd));
+ DBUG_RETURN(fd);
+ }
+ pthread_mutex_unlock(&THR_LOCK_open);
+ (void) my_fclose(fd,MyFlags);
+ my_errno=ENOMEM;
+ }
+ else
+ my_errno=errno;
+ DBUG_PRINT("error",("Got error %d on open",my_errno));
+ if (MyFlags & (MY_FFNF | MY_FAE | MY_WME))
+ my_error((flags & O_RDONLY) || (flags == O_RDONLY ) ? EE_FILENOTFOUND :
+ EE_CANTCREATEFILE,
+ MYF(ME_BELL+ME_WAITTANG), filename, my_errno);
+ DBUG_RETURN((FILE*) 0);
+} /* my_fopen */
+
+
+ /* Close a stream */
+
+int my_fclose(FILE *fd, myf MyFlags)
+{
+ int err,file;
+ DBUG_ENTER("my_fclose");
+ DBUG_PRINT("my",("stream: 0x%lx MyFlags: %d", (long) fd, MyFlags));
+
+ pthread_mutex_lock(&THR_LOCK_open);
+ file=fileno(fd);
+ if ((err = fclose(fd)) < 0)
+ {
+ my_errno=errno;
+ if (MyFlags & (MY_FAE | MY_WME))
+ my_error(EE_BADCLOSE, MYF(ME_BELL+ME_WAITTANG),
+ my_filename(file),errno);
+ }
+ else
+ my_stream_opened--;
+ if ((uint) file < my_file_limit && my_file_info[file].type != UNOPEN)
+ {
+ my_file_info[file].type = UNOPEN;
+ my_free(my_file_info[file].name, MYF(MY_ALLOW_ZERO_PTR));
+ }
+ pthread_mutex_unlock(&THR_LOCK_open);
+ DBUG_RETURN(err);
+} /* my_fclose */
+
+
+ /* Make a stream out of a file handle */
+ /* Name may be 0 */
+
+FILE *my_fdopen(File Filedes, const char *name, int Flags, myf MyFlags)
+{
+ FILE *fd;
+ char type[5];
+ DBUG_ENTER("my_fdopen");
+ DBUG_PRINT("my",("Fd: %d Flags: %d MyFlags: %d",
+ Filedes, Flags, MyFlags));
+
+ make_ftype(type,Flags);
+ if ((fd = fdopen(Filedes, type)) == 0)
+ {
+ my_errno=errno;
+ if (MyFlags & (MY_FAE | MY_WME))
+ my_error(EE_CANT_OPEN_STREAM, MYF(ME_BELL+ME_WAITTANG),errno);
+ }
+ else
+ {
+ pthread_mutex_lock(&THR_LOCK_open);
+ my_stream_opened++;
+ if ((uint) Filedes < (uint) my_file_limit)
+ {
+ if (my_file_info[Filedes].type != UNOPEN)
+ {
+ my_file_opened--; /* File is opened with my_open ! */
+ }
+ else
+ {
+ my_file_info[Filedes].name= my_strdup(name,MyFlags);
+ }
+ my_file_info[Filedes].type = STREAM_BY_FDOPEN;
+ }
+ pthread_mutex_unlock(&THR_LOCK_open);
+ }
+
+ DBUG_PRINT("exit",("stream: 0x%lx", (long) fd));
+ DBUG_RETURN(fd);
+} /* my_fdopen */
+
+
+/*
+ Make a fopen() typestring from a open() type bitmap
+
+ SYNOPSIS
+ make_ftype()
+ to String for fopen() is stored here
+ flag Flag used by open()
+
+ IMPLEMENTATION
+ This routine attempts to find the best possible match
+ between a numeric option and a string option that could be
+ fed to fopen. There is not a 1 to 1 mapping between the two.
+
+ NOTE
+ On Unix, O_RDONLY is usually 0
+
+ MAPPING
+ r == O_RDONLY
+ w == O_WRONLY|O_TRUNC|O_CREAT
+ a == O_WRONLY|O_APPEND|O_CREAT
+ r+ == O_RDWR
+ w+ == O_RDWR|O_TRUNC|O_CREAT
+ a+ == O_RDWR|O_APPEND|O_CREAT
+*/
+
+static void make_ftype(register char * to, register int flag)
+{
+ /* check some possible invalid combinations */
+ DBUG_ASSERT((flag & (O_TRUNC | O_APPEND)) != (O_TRUNC | O_APPEND));
+ DBUG_ASSERT((flag & (O_WRONLY | O_RDWR)) != (O_WRONLY | O_RDWR));
+
+ if ((flag & (O_RDONLY|O_WRONLY)) == O_WRONLY)
+ *to++= (flag & O_APPEND) ? 'a' : 'w';
+ else if (flag & O_RDWR)
+ {
+ /* Add '+' after theese */
+ if (flag & (O_TRUNC | O_CREAT))
+ *to++= 'w';
+ else if (flag & O_APPEND)
+ *to++= 'a';
+ else
+ *to++= 'r';
+ *to++= '+';
+ }
+ else
+ *to++= 'r';
+
+#if FILE_BINARY /* If we have binary-files */
+ if (flag & FILE_BINARY)
+ *to++='b';
+#endif
+ *to='\0';
+} /* make_ftype */