diff options
Diffstat (limited to 'examples/libsmbclient/smbwrapper/select.c')
| -rw-r--r-- | examples/libsmbclient/smbwrapper/select.c | 124 |
1 files changed, 0 insertions, 124 deletions
diff --git a/examples/libsmbclient/smbwrapper/select.c b/examples/libsmbclient/smbwrapper/select.c deleted file mode 100644 index aa90169ee71..00000000000 --- a/examples/libsmbclient/smbwrapper/select.c +++ /dev/null @@ -1,124 +0,0 @@ -/* - Unix SMB/Netbios implementation. - Version 3.0 - Samba select/poll implementation - Copyright (C) Andrew Tridgell 1992-1998 - Copyright (C) Derrell Lipman 2003-2005 - - 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., 675 Mass Ave, Cambridge, MA 02139, USA. -*/ - -/* - * WHY THIS FILE? - * - * This file implements the two functions in the select() family, as required - * by samba. The samba native functions, though, implement a pipe to help - * alleviate a deadlock problem, but which creates problems of its own (the - * timeout stops working correctly). Those functions also require that all - * signal handlers call a function which writes to the pipe -- a task which is - * difficult to do in the smbwrapper environment. - */ - - -#include <sys/select.h> -#include <errno.h> -#include <stdio.h> - -int sys_select(int maxfd, fd_set *readfds, fd_set *writefds, fd_set *errorfds, struct timeval *tval) -{ - int ret; - fd_set *readfds2, readfds_buf; - - /* If readfds is NULL we need to provide our own set. */ - if (readfds) { - readfds2 = readfds; - } else { - readfds2 = &readfds_buf; - FD_ZERO(readfds2); - } - - errno = 0; - ret = select(maxfd,readfds2,writefds,errorfds,tval); - - if (ret <= 0) { - FD_ZERO(readfds2); - if (writefds) - FD_ZERO(writefds); - if (errorfds) - FD_ZERO(errorfds); - } - - return ret; -} - -/******************************************************************* - Similar to sys_select() but catch EINTR and continue. - This is what sys_select() used to do in Samba. -********************************************************************/ - -int sys_select_intr(int maxfd, fd_set *readfds, fd_set *writefds, fd_set *errorfds, struct timeval *tval) -{ - int ret; - fd_set *readfds2, readfds_buf, *writefds2, writefds_buf, *errorfds2, errorfds_buf; - struct timeval tval2, *ptval, end_time, now_time; - extern void GetTimeOfDay(struct timeval *tval); - - readfds2 = (readfds ? &readfds_buf : NULL); - writefds2 = (writefds ? &writefds_buf : NULL); - errorfds2 = (errorfds ? &errorfds_buf : NULL); - if (tval) { - GetTimeOfDay(&end_time); - end_time.tv_sec += tval->tv_sec; - end_time.tv_usec += tval->tv_usec; - end_time.tv_sec += end_time.tv_usec / 1000000; - end_time.tv_usec %= 1000000; - ptval = &tval2; - } else { - ptval = NULL; - } - - do { - if (readfds) - readfds_buf = *readfds; - if (writefds) - writefds_buf = *writefds; - if (errorfds) - errorfds_buf = *errorfds; - if (tval) { - GetTimeOfDay(&now_time); - tval2.tv_sec = end_time.tv_sec - now_time.tv_sec; - tval2.tv_usec = end_time.tv_usec - now_time.tv_usec; - if ((signed long) tval2.tv_usec < 0) { - tval2.tv_usec += 1000000; - tval2.tv_sec--; - } - if ((signed long) tval2.tv_sec < 0) { - ret = 0; - break; /* time has already elapsed */ - } - } - - ret = sys_select(maxfd, readfds2, writefds2, errorfds2, ptval); - } while (ret == -1 && errno == EINTR); - - if (readfds) - *readfds = readfds_buf; - if (writefds) - *writefds = writefds_buf; - if (errorfds) - *errorfds = errorfds_buf; - - return ret; -} |