mdadm: Respect config file location in man

Default config file location could differ depending on OS (e.g. Debian family).
This patch takes default config file into consideration when creating mdadm.man
file as well as mdadm.conf.man.

Rename mdadm.conf.5 to mdadm.conf.5.in. Now mdadm.conf.5 is generated automatically.

Signed-off-by: Lukasz Florczak <lukasz.florczak@linux.intel.com>
Acked-by: Coly Li <colyli@suse.de>
Signed-off-by: Jes Sorensen <jsorensen@fb.com>

.gitignore

@@ -3,6 +3,7 @@
 /*-stamp
 /mdadm
 /mdadm.8
+/mdadm.conf.5
 /mdadm.udeb
 /mdassemble
 /mdmon

Makefile

@@ -227,7 +227,12 @@ raid6check : raid6check.o mdadm.h $(CHECK_OBJS)
 
 mdadm.8 : mdadm.8.in
 	sed -e 's/{DEFAULT_METADATA}/$(DEFAULT_METADATA)/g' \
-	-e 's,{MAP_PATH},$(MAP_PATH),g'  mdadm.8.in > mdadm.8
+	-e 's,{MAP_PATH},$(MAP_PATH),g' -e 's,{CONFFILE},$(CONFFILE),g' \
+	-e 's,{CONFFILE2},$(CONFFILE2),g'  mdadm.8.in > mdadm.8
+
+mdadm.conf.5 : mdadm.conf.5.in
+	sed -e 's,{CONFFILE},$(CONFFILE),g' \
+	-e 's,{CONFFILE2},$(CONFFILE2),g'  mdadm.conf.5.in > mdadm.conf.5
 
 mdadm.man : mdadm.8
 	man -l mdadm.8 > mdadm.man

mdadm.8.in

@@ -267,13 +267,13 @@ the exact meaning of this option in different contexts.
 .TP
 .BR \-c ", " \-\-config=
 Specify the config file or directory.  Default is to use
-.B /etc/mdadm.conf
+.B {CONFFILE}
 and
-.BR /etc/mdadm.conf.d ,
+.BR {CONFFILE}.d ,
 or if those are missing then
-.B /etc/mdadm/mdadm.conf
+.B {CONFFILE2}
 and
-.BR /etc/mdadm/mdadm.conf.d .
+.BR {CONFFILE2}.d .
 If the config file given is
 .B "partitions"
 then nothing will be read, but
@@ -2014,9 +2014,9 @@ The config file is only used if explicitly named with
 or requested with (a possibly implicit)
 .BR \-\-scan .
 In the later case,
-.B /etc/mdadm.conf
+.B {CONFFILE}
 or
-.B /etc/mdadm/mdadm.conf
+.B {CONFFILE2}
 is used.
 
 If
@@ -3344,7 +3344,7 @@ uses this to find arrays when
 is given in Misc mode, and to monitor array reconstruction
 on Monitor mode.
 
-.SS /etc/mdadm.conf
+.SS {CONFFILE} (or {CONFFILE2})
 
 The config file lists which devices may be scanned to see if
 they contain MD super block, and gives identifying information
@@ -3352,7 +3352,7 @@ they contain MD super block, and gives identifying information
 .BR mdadm.conf (5)
 for more details.
 
-.SS /etc/mdadm.conf.d
+.SS {CONFFILE}.d (or {CONFFILE2}.d)
 
 A directory containing configuration files which are read in lexical
 order.

mdadm.conf.5.in

@@ -8,7 +8,7 @@
 .SH NAME
 mdadm.conf \- configuration for management of Software RAID with mdadm
 .SH SYNOPSIS
-/etc/mdadm.conf
+{CONFFILE}
 .SH DESCRIPTION
 .PP
 .I mdadm