build: simplify code related to man pages

Simplify the main targets and use wildcards instead of repeating the
filenames manually.

Also, restore the `man` target and building only when `HAVE_MAN` is
enabled.

Note: Make automatically removes intermediate files (.1 and .5), so in
general only the .gz files have to be cleaned.

Commands used to rename the man pages:

    cd src/man
    git mv firecfg.txt firecfg.1.in
    git mv firejail-login.txt firejail-login.5.in
    git mv firejail-profile.txt firejail-profile.5.in
    git mv firejail-users.txt firejail-users.5.in
    git mv firejail.txt firejail.1.in
    git mv firemon.txt firemon.1.in
    git mv jailcheck.txt jailcheck.1.in

This is kind of a follow-up to commit 9e206b7f2 ("rework src/man
Makefile", 2023-07-07).

1 files changed, 43 insertions, 0 deletions

diff --git a/src/man/firejail-login.5.in b/src/man/firejail-login.5.in
new file mode 100644
index 000000000..f03fc3c37
--- /dev/null
+++ b/src/man/firejail-login.5.in
@@ -0,0 +1,43 @@
+.TH FIREJAIL-LOGIN 5 "MONTH YEAR" "VERSION" "login.users man page"
+.SH NAME
+login.users \- Login file syntax for Firejail
+
+.SH DESCRIPTION
+/etc/firejail/login.users file describes additional arguments passed to the firejail executable
+upon user logging into a Firejail restricted shell. Each user entry in the file consists of
+a user name followed by the arguments passed to firejail. The format is as follows:
+
+        user_name: arguments
+
+Example:
+
+        netblue: --net=none --protocol=unix
+
+Wildcard patterns are accepted in the user name field:
+
+        user*: --private
+
+.SH RESTRICTED SHELL
+To configure a restricted shell, replace /bin/bash with /usr/bin/firejail in
+the /etc/passwd file for each user that needs to be restricted. Alternatively,
+you can specify /usr/bin/firejail using the `adduser` or `usermod` commands:
+
+adduser \-\-shell /usr/bin/firejail username
+.br
+usermod \-\-shell /usr/bin/firejail username
+
+.SH FILES
+/etc/firejail/login.users
+
+.SH LICENSE
+Firejail is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.
+.PP
+Homepage: https://firejail.wordpress.com
+.SH SEE ALSO
+.BR firejail (1),
+.BR firemon (1),
+.BR firecfg (1),
+.BR firejail-profile (5),
+.BR firejail-users (5),
+.BR jailcheck (1)
+.\" vim: set filetype=groff :