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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-05 17:47:29 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-05 17:47:29 +0000 |
commit | 4f5791ebd03eaec1c7da0865a383175b05102712 (patch) | |
tree | 8ce7b00f7a76baa386372422adebbe64510812d4 /lib/util/select.c | |
parent | Initial commit. (diff) | |
download | samba-4f5791ebd03eaec1c7da0865a383175b05102712.tar.xz samba-4f5791ebd03eaec1c7da0865a383175b05102712.zip |
Adding upstream version 2:4.17.12+dfsg.upstream/2%4.17.12+dfsgupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'lib/util/select.c')
-rw-r--r-- | lib/util/select.c | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/lib/util/select.c b/lib/util/select.c new file mode 100644 index 0000000..dc79a27 --- /dev/null +++ b/lib/util/select.c @@ -0,0 +1,61 @@ +/* + Unix SMB/Netbios implementation. + Version 3.0 + Samba select/poll implementation + Copyright (C) Andrew Tridgell 1992-1998 + + 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 3 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, see <http://www.gnu.org/licenses/>. +*/ + +#include "replace.h" +#include "system/filesys.h" +#include "system/select.h" +#include "lib/util/select.h" +#include "lib/util/time.h" + +int sys_poll_intr(struct pollfd *fds, int num_fds, int timeout) +{ + int orig_timeout = timeout; + struct timespec start; + int ret; + + clock_gettime_mono(&start); + + while (true) { + struct timespec now; + int64_t elapsed; + + ret = poll(fds, num_fds, timeout); + if (ret != -1) { + break; + } + if (errno != EINTR) { + break; + } + /* Infinite timeout, no need to adjust. */ + if (timeout < 0) { + continue; + } + clock_gettime_mono(&now); + elapsed = nsec_time_diff(&now, &start) / 1000000; + timeout = orig_timeout - elapsed; + /* Unlikely, but might happen eg. when getting traced. + * Make sure we're not hanging in this case. + */ + if (timeout < 0) { + timeout = 0; + } + }; + return ret; +} |