diff options
Diffstat (limited to 'lib/libc')
| -rw-r--r-- | lib/libc/gen/sigsetops.3 | 21 |
1 files changed, 12 insertions, 9 deletions
diff --git a/lib/libc/gen/sigsetops.3 b/lib/libc/gen/sigsetops.3 index 5ca92e5..3fd72b6 100644 --- a/lib/libc/gen/sigsetops.3 +++ b/lib/libc/gen/sigsetops.3 @@ -32,7 +32,7 @@ .\" @(#)sigsetops.3 8.1 (Berkeley) 6/4/93 .\" $FreeBSD$ .\" -.Dd June 4, 1993 +.Dd December 16, 2004 .Dt SIGSETOPS 3 .Os .Sh NAME @@ -92,21 +92,24 @@ The function returns whether a specified signal .Fa signo is contained in the signal set. -.Pp -These functions -are provided as macros in the include file <signal.h>. -Actual functions are available -if their names are undefined (with -.Ic #undef Ar name ) . .Sh RETURN VALUES The .Fn sigismember function returns 1 if the signal is a member of the set, 0 otherwise. -The other functions return 0. +The other functions return 0 upon success. +A \-1 return value +indicates an error occurred and the global variable +.Va errno +is set to indicate the reason. .Sh ERRORS -Currently no errors are detected. +These functions could fail if one of the following occurs: +.Bl -tag -width Er +.It Bq Er EINVAL +.Fa signo +has an invalid value. +.El .Sh SEE ALSO .Xr kill 2 , .Xr sigaction 2 , |
