From 35a201cc8ef0c3f5b2df88d2e528aabee1048348 Mon Sep 17 00:00:00 2001 From: Wojtek Kosior Date: Fri, 30 Apr 2021 18:47:09 +0200 Subject: Initial/Final commit --- mariadb-connector-c-v_2.3.7/libmariadb/my_read.c | 66 ++++++++++++++++++++++++ 1 file changed, 66 insertions(+) create mode 100644 mariadb-connector-c-v_2.3.7/libmariadb/my_read.c (limited to 'mariadb-connector-c-v_2.3.7/libmariadb/my_read.c') 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 + + + /* 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 */ -- cgit v1.2.3