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-rw-r--r--mariadb-connector-c-v_2.3.7/libmariadb/my_read.c66
1 files changed, 66 insertions, 0 deletions
diff --git a/mariadb-connector-c-v_2.3.7/libmariadb/my_read.c b/mariadb-connector-c-v_2.3.7/libmariadb/my_read.c
new file mode 100644
index 0000000..53cc5ac
--- /dev/null
+++ b/mariadb-connector-c-v_2.3.7/libmariadb/my_read.c
@@ -0,0 +1,66 @@
+/* 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 */
+
+#include "mysys_priv.h"
+#include "mysys_err.h"
+#include <errno.h>
+
+
+ /* Read a chunk of bytes from a file */
+
+uint my_read(File Filedes, unsigned char *Buffer, uint Count, myf MyFlags)
+ /* File descriptor */
+ /* Buffer must be at least count bytes */
+ /* Max number of bytes returnd */
+ /* Flags on what to do on error */
+{
+ uint readbytes;
+ DBUG_ENTER("my_read");
+ DBUG_PRINT("my",("Fd: %d Buffer: %lx Count: %u MyFlags: %d",
+ Filedes, Buffer, Count, MyFlags));
+
+ for (;;)
+ {
+ errno=0; /* Linux doesn't reset this */
+ if ((readbytes = (uint) read(Filedes, Buffer, Count)) != Count)
+ {
+ my_errno=errno ? errno : -1;
+ DBUG_PRINT("warning",("Read only %ld bytes off %ld from %d, errno: %d",
+ readbytes,Count,Filedes,my_errno));
+#ifdef THREAD
+ if (readbytes == 0 && errno == EINTR)
+ continue; /* Interrupted */
+#endif
+ if (MyFlags & (MY_WME | MY_FAE | MY_FNABP))
+ {
+ if ((int) readbytes == -1)
+ my_error(EE_READ, MYF(ME_BELL+ME_WAITTANG),
+ my_filename(Filedes),my_errno);
+ else if (MyFlags & (MY_NABP | MY_FNABP))
+ my_error(EE_EOFERR, MYF(ME_BELL+ME_WAITTANG),
+ my_filename(Filedes),my_errno);
+ }
+ if ((int) readbytes == -1 || (MyFlags & (MY_FNABP | MY_NABP)))
+ DBUG_RETURN(MY_FILE_ERROR); /* Return with error */
+ }
+
+ if (MyFlags & (MY_NABP | MY_FNABP))
+ readbytes=0; /* Ok on read */
+ break;
+ }
+ DBUG_RETURN(readbytes);
+} /* my_read */