git: 78182897b6a2 - stable/13 - kqueue1(2): document
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Date: Sun, 16 Apr 2023 11:10:29 UTC
The branch stable/13 has been updated by kib: URL: https://cgit.FreeBSD.org/src/commit/?id=78182897b6a238161466c29dd8941bfc147f0b79 commit 78182897b6a238161466c29dd8941bfc147f0b79 Author: Konstantin Belousov <kib@FreeBSD.org> AuthorDate: 2023-03-25 23:41:21 +0000 Commit: Konstantin Belousov <kib@FreeBSD.org> CommitDate: 2023-04-16 10:59:43 +0000 kqueue1(2): document (cherry picked from commit f2ec444be523d3d00808ff82a7c690c75defe953) --- lib/libc/sys/Makefile.inc | 1 + lib/libc/sys/kqueue.2 | 20 +++++++++++++++++++- 2 files changed, 20 insertions(+), 1 deletion(-) diff --git a/lib/libc/sys/Makefile.inc b/lib/libc/sys/Makefile.inc index 6f663158d840..4152d01a0f3d 100644 --- a/lib/libc/sys/Makefile.inc +++ b/lib/libc/sys/Makefile.inc @@ -430,6 +430,7 @@ MLINKS+=jail.2 jail_attach.2 \ jail.2 jail_set.2 MLINKS+=kldunload.2 kldunloadf.2 MLINKS+=kqueue.2 kevent.2 \ + kqueue.2 kqueue1.2 \ kqueue.2 EV_SET.3 MLINKS+=link.2 linkat.2 MLINKS+=madvise.2 posix_madvise.2 diff --git a/lib/libc/sys/kqueue.2 b/lib/libc/sys/kqueue.2 index 863136c9928f..dbe0dad532c0 100644 --- a/lib/libc/sys/kqueue.2 +++ b/lib/libc/sys/kqueue.2 @@ -24,7 +24,7 @@ .\" .\" $FreeBSD$ .\" -.Dd May 14, 2022 +.Dd March 26, 2023 .Dt KQUEUE 2 .Os .Sh NAME @@ -38,6 +38,8 @@ .Ft int .Fn kqueue "void" .Ft int +.Fn kqueue1 "u_int flags" +.Ft int .Fo kevent .Fa "int kq" .Fa "const struct kevent *changelist" @@ -90,6 +92,22 @@ flag, then the descriptor table is shared, which will allow sharing of the kqueue between two processes. .Pp The +.Fn kqueue1 +system call also creates a new kernel event queue, and additionally takes +the +.Fa flags +argument, which is a bitwise-inclusive OR of the following flags: +.Bl -tag -width "KQUEUE_CLOEXEC" +.It Fa KQUEUE_CLOEXEC +The returned file descriptor is automatically closed on +.Xr execve 2 +.El +The +.Ql fd = kqueue() +call is equivalent to +.Ql fd = kqueue1(0) . +.Pp +The .Fn kevent system call is used to register events with the queue, and return any pending