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[DFS] Add file header for select implementation

This commit is contained in:
Bernard Xiong 2015-05-05 13:23:01 +00:00
parent 3aa144d0be
commit b7d069c4c8
1 changed files with 32 additions and 8 deletions
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40
components/dfs/filesystems/lwip/lwip_select.c
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@ -1,3 +1,27 @@
/*
* File : lwip_select.c
* This file is part of RT-Thread RTOS
* COPYRIGHT (C) 2015, RT-Thread Development Team
*
* 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; either version 2 of the License, or
* (at your option) any later version.
*
* 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.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Change Logs:
* Date Author Notes
* 2015-05-05 Bernard First version
*/
#include <rtthread.h>
#include <sys/select.h>
@ -21,28 +45,28 @@ select(int maxfdp1, fd_set *readset, fd_set *writeset, fd_set *exceptset,
maxfd = 0;
for (index = 0; index < maxfdp1; index ++)
{
/* convert fd to sock */
sock = dfs_lwip_getsocket(index);
if (sock == -1) continue;
if (sock > maxfd) maxfd = sock;
/* if FD is set, set the socket set */
if (readset && FD_ISSET(index, readset))
{
sock = dfs_lwip_getsocket(index);
if (sock > maxfd) maxfd = sock;
FD_SET(sock, &sock_readset);
}
if (writeset && FD_ISSET(index, writeset))
{
sock = dfs_lwip_getsocket(index);
if (sock > maxfd) maxfd = sock;
FD_SET(sock, &sock_writeset);
}
if (exceptset && FD_ISSET(index, exceptset))
{
sock = dfs_lwip_getsocket(index);
if (sock > maxfd) maxfd = sock;
FD_SET(sock, &sock_exceptset);
}
}
/* no socket found, return bad file descriptor */
if (maxfd == 0) return -EBADF;
maxfd += 1;