From ea1061e2f6826360711fcca0e69e9f188506e17a Mon Sep 17 00:00:00 2001 From: simon Date: Thu, 17 Jul 2008 21:54:23 +0000 Subject: Make it more clear what it means that SA_RESTART is set for signal handlers added with signal(3). Submitted by: gnn (slightly modified by me) MFC after: 1 week --- lib/libc/gen/signal.3 | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) (limited to 'lib/libc') diff --git a/lib/libc/gen/signal.3 b/lib/libc/gen/signal.3 index 4086f68..866eee3 100644 --- a/lib/libc/gen/signal.3 +++ b/lib/libc/gen/signal.3 @@ -181,10 +181,12 @@ func() remains installed after a signal has been delivered. For some system calls, if a signal is caught while the call is executing and the call is prematurely terminated, the call is automatically restarted. -(The handler is installed using the +Any handler installed with +.Xr signal 3 +will have the .Dv SA_RESTART -flag with -.Xr sigaction 2 . ) +flag set, meaning that any restartable system call will not return on +receipt of a signal. The affected system calls include .Xr read 2 , .Xr write 2 , -- cgit v1.1