Add popt-based options --setcaps and --restore (RhBug:1550745)

--setcaps resets capabilities of package files.

Because the opotion is popt-based it has some drawbacks -
it does not know about %ghost files, file states, etc.

--restore regenerate owner, group, permissions and capabilities
of package files.

It uses 3 already defined options in the correct order.
rpm --setugids is used first of all, because it may change permissions
or capabilities. rpm --setperms is used before rpm --setcaps, but the
opposite order is right too.

doc/rpm.8

@@ -49,6 +49,10 @@ rpm \- RPM Package Manager
 
 \fBrpm\fR \fB--setugids\fR \fB\fIPACKAGE_NAME\fB\fR\fI ...\fR
 
+\fBrpm\fR \fB--setcaps\fR \fB\fIPACKAGE_NAME\fB\fR\fI ...\fR
+
+\fBrpm\fR \fB--restore\fR \fB\fIPACKAGE_NAME\fB\fR\fI ...\fR
+
 .SS "select-options"
 .PP
 
@@ -839,15 +843,24 @@ options are currently set in
 configuration file(s).
 .TP
 \fBrpm\fR \fB--setperms\fR \fIPACKAGE_NAME\fR
-sets permissions of files in the given package.
+sets permissions of files in the given package. Consider using
+\fB--restore\fR instead.
 .TP
 \fBrpm\fR \fB--setugids\fR \fIPACKAGE_NAME\fR
 sets user/group ownership of files in the given package. This command can
-change permissions of files in that package. It is caused by calling command
-\fBchmod\fR that can clear SUID and SGID bits in some situations. So it is
-safer to call also \fB--setperms\fR after calling \fB--setugids\fR.
+change permissions and capabilities of files in that package. In most
+cases it is better to use \fB--restore\fR instead.
+.TP
+\fBrpm\fR \fB--setcaps\fR \fIPACKAGE_NAME\fR
+sets capabilities of files in the given package. Consider using
+\fB--restore\fR instead.
+.TP
+\fBrpm\fR \fB--restore\fR \fIPACKAGE_NAME\fR
+The option restores owner, group, permissions and capabilities of files
+in the given package.
 .TP
-Options \fB--setperms\fR and \fB--setugids\fR are mutually exclusive.
+Options \fB--setperms\fR, \fB--setugids\fR, \fB--setcaps\fR and
+\fB--restore\fR are mutually exclusive.
 
 .SS "FTP/HTTP OPTIONS"
 .PP

rpmpopt.in

@@ -52,6 +52,18 @@ rpm	alias --setugids -q --qf \
         --pipe "(echo 'ch() { chown -h -- \"$1\" \"$3\";chgrp -h -- \"$2\" \"$3\"; }';grep '^ch '|grep -v \(none\))|sh" \
 	--POPTdesc=$"set user/group ownership of files in a package"
 
+rpm	alias --setcaps -q --qf \
+	"[\[ -f %{FILENAMES:shescape} -a ! -L %{FILENAMES:shescape} \] \
+	    && setcap %|FILECAPS?{%{FILECAPS:shescape}}:{''}| %{FILENAMES:shescape}\n]" \
+	--pipe "sh" \
+	--POPTdesc=$"set capabilities of files in a package"
+
+rpm	alias --restore -q --qf \
+	'[  rpm --setugids %{NAME:shescape}; \
+	    rpm --setperms %{NAME:shescape}; \
+	    rpm --setcaps  %{NAME:shescape}; \n]' --pipe "sh" \
+	--POPTdesc=$"restore file/directory permissions"
+
 rpm	alias --conflicts	--qf \
   "[%|VERBOSE?{%{CONFLICTFLAGS:deptype}: }:{}|%{CONFLICTNEVRS}\n]" \
 	--POPTdesc=$"list capabilities this package conflicts with"