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authorkib <kib@FreeBSD.org>2011-07-12 20:38:42 +0000
committerkib <kib@FreeBSD.org>2011-07-12 20:38:42 +0000
commit9ddcdc361153958f6fd170befab585e362283ac3 (patch)
tree3be0a907d160d1114239b0882f13535d063f09b1 /lib
parent09ee3c95a50245039079062566f7368fc034ba87 (diff)
downloadFreeBSD-src-9ddcdc361153958f6fd170befab585e362283ac3.zip
FreeBSD-src-9ddcdc361153958f6fd170befab585e362283ac3.tar.gz
Document RFTSIGZMB. Fix spelling of SIGCHLD. Note that signals are
delivered, not returned. MFC after: 1 week
Diffstat (limited to 'lib')
-rw-r--r--lib/libc/sys/rfork.216
1 files changed, 14 insertions, 2 deletions
diff --git a/lib/libc/sys/rfork.2 b/lib/libc/sys/rfork.2
index f1ae14b..222bac4 100644
--- a/lib/libc/sys/rfork.2
+++ b/lib/libc/sys/rfork.2
@@ -5,7 +5,7 @@
.\"
.\" $FreeBSD$
.\"
-.Dd March 15, 2011
+.Dd July 12, 2011
.Dt RFORK 2
.Os
.Sh NAME
@@ -84,8 +84,18 @@ Note that a lot of code will not run correctly in such an environment.
.It Dv RFSIGSHARE
If set, the kernel will force sharing the sigacts structure between the
child and the parent.
+.It Dv RFTSIGZMB
+If set, the kernel will deliver a specified signal to the parent
+upon the child exit, instead of default SIGCHLD.
+The signal number
+.Dv signum
+is specified by oring the
+.Dv RFTSIGFLAGS(signum)
+expression into
+.Fa flags .
+Specifying signal number 0 disables signal delivery upon the child exit.
.It Dv RFLINUXTHPN
-If set, the kernel will return SIGUSR1 instead of SIGCHILD upon thread
+If set, the kernel will deliver SIGUSR1 instead of SIGCHLD upon thread
exit for the child.
This is intended to mimic certain Linux clone behaviour.
.El
@@ -164,6 +174,8 @@ would be exceeded (see
Both the RFFDG and the RFCFDG flags were specified.
.It Bq Er EINVAL
Any flags not listed above were specified.
+.It Bq Er EINVAL
+An invalid signal number was specified.
.It Bq Er ENOMEM
There is insufficient swap space for the new process.
.El
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