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Re: Proposal: new libc/libutil functions to map SIGXXXX <-> "XXXX"
Date: Fri, 28 Apr 2017 15:31:10 +0000 (UTC)
From: christos%astron.com@localhost (Christos Zoulas)
| Fine, return NULL for no signal number / and -1 for no such signal name.
I think 0 for no name is better, we know there is not (and cannot be) a
signal 0, but -1 ? Unlikely, but... (and besides, people often assume
that funcs that return -1 to indicate error also set errno, and this does not.)
| I would just leave __pure out of the man page for now.
Yes, that's what I have done
The proposal is now to put ...
const char *signalname(int) __pure;
int signalnumber(const char *);
in <signal.h> (somewhere in a _NETBSD_SOURCE proctected area), and
the man page will be as below.
The tgz file at ftp://munnari.oz.au/kre/signame.tgz has been updated
to reflect all of this.
More comments/suggestions ?
SIGNALNAME(3) Library Functions Manual SIGNALNAME(3)
signalname signalnumber -- convert between signal numbers and names
Standard C Library (libc, -lc)
const char *
signalnumber(const char *name);
The signalname() function takes a signal number sig, and returns the name
of that signal. Signal names returned do not contain a leading ``SIG''
The return value of signalname() is NULL if sig does not represent a
valid signal number.
The signalnumber() function converts the signal name name to the number
corresponding to that signal. The name is handled in a case-insensitive
manner. Any leading ``SIG'' prefix in name is ignored.
The signalnumber() function returns the signal number, or zero (0) if the
name given does not represent a valid signal.
intro(2), psignal(3), strsignal(3)
The signalname() and signalnumber() functions first appeared in
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