Add a -f configfile option to devd(8), based on a patch submitted by

Wojciech A. Koszek.

Submitted by:	Wojciech A. Koszek <dunstan@freebsd.czest.pl>

etc/defaults/rc.conf

@@ -29,6 +29,7 @@ apm_enable="NO"		# Set to YES to enable APM BIOS functions (or NO).
 apmd_enable="NO"	# Run apmd to handle APM event from userland.
 apmd_flags=""		# Flags to apmd (if enabled).
 devd_enable="YES" 	# Run devd, to trigger programs on device tree changes.
+devd_flags=""		# Additional flags for devd(8).
 kldxref_enable="NO"	# Build linker.hints files with kldxref(8).
 kldxref_clobber="NO"	# Overwrite old linker.hints at boot.
 kldxref_module_path=""	# Override kern.module_path. A ';'-delimited list.

sbin/devd/devd.8

@@ -33,7 +33,9 @@
 .Nd "device state change daemon"
 .Sh SYNOPSIS
 .Nm
-.Op Fl Ddn
+.Op Fl Dd
+.Op Fl f Ar file
+.Op Fl n
 .Sh DESCRIPTION
 The
 .Nm
@@ -41,11 +43,19 @@ daemon provides a way to have userland programs run when certain
 kernel events happen.
 .Pp
 The following options are accepted.
-.Bl -tag -width indent
+.Bl -tag -width indent-two
 .It Fl D
 Enable debugging messages.
 .It Fl d
 Run in the foreground instead of becoming a daemon.
+.It Fl f Ar file
+Use configuration file
+.Ar file
+instead of the default
+.Pa /etc/devd.conf .
+If option
+.Fl f
+is specified more than once, the last file specified is used.
 .It Fl n
 Do not process all pending events before becoming a daemon.
 Instead, call daemon right away.
@@ -95,7 +105,9 @@ The
 utility
 reads
 .Pa /etc/devd.conf
-and uses that file to drive the rest of the process.
+or the alternate configuration file specified with a
+.Fl f
+option and uses that file to drive the rest of the process.
 While the format of this file is described in
 .Xr devd.conf 5 ,
 some basics are covered here.
@@ -118,6 +130,17 @@ receives are forwarded to the
 .Ux
 domain socket at
 .Pa /var/run/devd.pipe .
+.Sh FILES
+.Bl -tag -width ".Pa /var/run/devd.pipe" -compact
+.It Pa /etc/devd.conf
+The default
+.Nm
+configuration file.
+.It Pa /var/run/devd.pipe
+The socket used by
+.Nm
+to communicate with its clients.
+.El
 .Sh SEE ALSO
 .Xr devctl 4 ,
 .Xr devd.conf 5

sbin/devd/devd.cc

@@ -83,6 +83,8 @@ int dflag;
 int nflag;
 int romeo_must_die = 0;
 
+static const char *configfile = CF;
+
 static void event_loop(void);
 static void usage(void);
 
@@ -353,7 +355,7 @@ config::parse(void)
 {
 	vector<string>::const_iterator i;
 
-	parse_one_file(CF);
+	parse_one_file(configfile);
 	for (i = _dir_list.begin(); i != _dir_list.end(); i++)
 		parse_files_in_dir((*i).c_str());
 	sort_vector(_attach_list);
@@ -908,7 +910,7 @@ main(int argc, char **argv)
 	int ch;
 
 	check_devd_enabled();
-	while ((ch = getopt(argc, argv, "Ddn")) != -1) {
+	while ((ch = getopt(argc, argv, "Ddf:n")) != -1) {
 		switch (ch) {
 		case 'D':
 			Dflag++;
@@ -916,6 +918,9 @@ main(int argc, char **argv)
 		case 'd':
 			dflag++;
 			break;
+		case 'f':
+			configfile = optarg;
+			break;
 		case 'n':
 			nflag++;
 			break;