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gen/daemon.3 Libc-498 Libc-262
--- Libc/Libc-498/gen/daemon.3
+++ Libc/Libc-262/gen/daemon.3
@@ -30,7 +30,7 @@
 .\" SUCH DAMAGE.
 .\"
 .\"	@(#)daemon.3	8.1 (Berkeley) 6/9/93
-.\" $FreeBSD: src/lib/libc/gen/daemon.3,v 1.14 2003/11/10 22:04:51 ghelmer Exp $
+.\" $FreeBSD: src/lib/libc/gen/daemon.3,v 1.10 2001/10/01 16:08:50 ru Exp $
 .\"
 .Dd June 9, 1993
 .Dt DAEMON 3
@@ -49,70 +49,33 @@
 .Fn daemon
 function is for programs wishing to detach themselves from the
 controlling terminal and run in the background as system daemons.
-On Mac OS X, the use of this API is discouraged in favor of using
-.Xr launchd 8 .
 .Pp
 Unless the argument
 .Fa nochdir
 is non-zero,
 .Fn daemon
-changes the current working directory to the root
-.Pq Pa / .
+changes the current working directory to the root (``/'').
 .Pp
 Unless the argument
 .Fa noclose
 is non-zero,
 .Fn daemon
-will redirect standard input, standard output, and standard error to
-.Pa /dev/null .
-.Sh RETURN VALUES
-.Rv -std daemon
+will redirect standard input, standard output and standard error
+to ``/dev/null''.
 .Sh ERRORS
-The
+If an error occurs,
 .Fn daemon
-function may fail and set
+returns -1 and sets the global variable
 .Va errno
-for any of the errors specified for the library functions
+to any of the errors specified for the library functions
 .Xr fork 2
 and
 .Xr setsid 2 .
 .Sh SEE ALSO
 .Xr fork 2 ,
-.Xr setsid 2 ,
-.Xr sigaction 2
+.Xr setsid 2
 .Sh HISTORY
 The
 .Fn daemon
 function first appeared in
 .Bx 4.4 .
-.Sh CAVEATS
-Unless the
-.Fa noclose
-argument is non-zero,
-.Fn daemon
-will close the first three file descriptors and redirect them to
-.Pa /dev/null .
-Normally, these correspond to standard input, standard output, and
-standard error.
-However, if any of those file descriptors refer to something else, they
-will still be closed, resulting in incorrect behavior of the calling program.
-This can happen if any of standard input, standard output, or standard
-error have been closed before the program was run.
-Programs using
-.Fn daemon
-should therefore either call
-.Fn daemon
-before opening any files or sockets, or verify that any file
-descriptors obtained have values greater than 2.
-.Pp
-The
-.Fn daemon
-function temporarily ignores
-.Dv SIGHUP
-while calling
-.Xr setsid 2
-to prevent a parent session group leader's calls to
-.Xr fork 2
-and then
-.Xr _exit 2
-from prematurely terminating the child process.