linux-ext4 - [PATCH 6/9] e2scrub_all: add the -n option which shows what e2scrub

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Message-Id: <20190321202513.1969-7-tytso@mit.edu>
Date:   Thu, 21 Mar 2019 16:25:10 -0400
From:   "Theodore Ts'o" <tytso@....edu>
To:     Ext4 Developers List <linux-ext4@...r.kernel.org>
Cc:     darrick.wong@...cle.com, lczerner@...hat.com,
        "Theodore Ts'o" <tytso@....edu>
Subject: [PATCH 6/9] e2scrub_all: add the -n option which shows what e2scrub_all would do

Also fix the copyright symbol so it is properly formatted when
processed into postscript or pdf.

Signed-off-by: Theodore Ts'o <tytso@....edu>
---
 scrub/e2scrub_all.8.in | 17 ++++++++++++++---
 scrub/e2scrub_all.in   |  8 +++++---
 2 files changed, 19 insertions(+), 6 deletions(-)

diff --git a/scrub/e2scrub_all.8.in b/scrub/e2scrub_all.8.in
index ba3b8735e..e2cd5e44a 100644
--- a/scrub/e2scrub_all.8.in
+++ b/scrub/e2scrub_all.8.in
@@ -20,12 +20,23 @@ See the
 manual page for more information about how the checking is performed.
 .SH OPTIONS
 .TP
-\fB-A\fR
-Scrub all ext[234] filesystems even if they are not mounted.
+\fB-n\fR
+Print what commands
+.B e2scrub_all
+would execute to initiate the e2scrub operations.
+(Note: these commands will not actually be executed; however, since
+.B e2scrub_all
+needs to run some additional, privileged commands to query the
+system to determine which
+.B e2scrub
+commands would be executed, it still needs to be run as root.)
 .TP
 \fB-r\fR
 Remove e2scrub snapshots but do not check anything.
 .TP
+\fB-A\fR
+Scrub all ext[234] filesystems even if they are not mounted.
+.TP
 \fB-V\fR
 Print version information and exit.
 .SH SEE ALSO
@@ -33,4 +44,4 @@ Print version information and exit.
 .SH AUTHOR
 Darrick J. Wong <darrick.wong@...cle.com>
 .SH COPYRIGHT
-Copyright ©2018 Oracle.  License is GPLv2+. <http://www.gnu.org/licenses/gpl-2.0.html>
+Copyright \[co]2018 Oracle.  License is GPLv2+. <http://www.gnu.org/licenses/gpl-2.0.html>
diff --git a/scrub/e2scrub_all.in b/scrub/e2scrub_all.in
index d725a7f2e..8bc868aa0 100644
--- a/scrub/e2scrub_all.in
+++ b/scrub/e2scrub_all.in
@@ -29,8 +29,9 @@ scrub_args=""
 
 print_help() {
 	echo "Usage: $0 [OPTIONS]"
-	echo " -A: Scrub all ext[234] filesystems even if not mounted."
+	echo " -n: Show what commands e2scrub_all would execute."
 	echo " -r: Remove e2scrub snapshots."
+	echo " -A: Scrub all ext[234] filesystems even if not mounted."
 	echo " -V: Print version information and exit."
 }
 
@@ -60,10 +61,11 @@ exitcode() {
 	exit "${ret}"
 }
 
-while getopts "ArV" opt; do
+while getopts "nrAV" opt; do
 	case "${opt}" in
-	"A") scrub_all=1;;
+	"n") DBG="echo Would execute: " ;;
 	"r") scrub_args="${scrub_args} -r";;
+	"A") scrub_all=1;;
 	"V") print_version; exitcode 0;;
 	*) print_help; exitcode 2;;
 	esac
-- 
2.19.1