Summary: SIG_HOLD

From: Larry Chin (
Date: Tue Jun 16 1992 - 09:40:27 CDT

Original Query:

> IN <sys/signal.h> there are #defines for SIG_HOLD and SIG_CATCH. Does
> anybody have any idea what these do ? There is no documentation that I
> can find, with Answerbook or anything else, that even hints at the
> function of these two defines. I would hope they do what the names
> suggest, but I would like to be sure.

Sorry it has taken so long for this summary, I've been kinda swamped.
Anyway, general concensus of opinion is that SIG_CATCH is used only by the
kernel and that SIG_HOLD since it is not documented is either not implemented
or not meant to be used.

Thanks to all that took the time to reply.

stern@sunne.East.Sun.COM (Hal Stern - NE Area Systems Engineer)
Terry Rosenbaum <>
trdlnk! (Michael Sullivan)
kucharsk@anthrax.Solbourne.COM (William Kucharski)
ukw!kevin (Kevin Sheehan {Consulting Poster Child})

Larry Chin {} CCH Canadian Ltd.
System Administrator 6 Garamond Court
Research and Development Don Mills, Ontario.
(416) 441-4001 ext. 349 M3C 1Z5

Bell Labs Unix -- Reach out and grep someone.

This archive was generated by hypermail 2.1.2 : Fri Sep 28 2001 - 23:06:44 CDT