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From: Alexander Kapshuk <alexander.kapshuk@gmail.com>
To: linux-kernel@vger.kernel.org
Cc: gregkh@linuxfoundation.org, alexander.kapshuk@gmail.com
Subject: [PATCH 1/2] ver_linux: Move stderr redirection from function parameter to function body
Date: Sat, 12 May 2018 12:02:30 +0300	[thread overview]
Message-ID: <20180512090231.4596-1-alexander.kapshuk@gmail.com> (raw)

Remove stderr redirection to stdout from all the parameters to the
version() function, and put it with the body of the version() function
instead.
This improves code readability.

Signed-off-by: Alexander Kapshuk <alexander.kapshuk@gmail.com>
---
 scripts/ver_linux | 53 ++++++++++++++++++++++++-----------------------
 1 file changed, 27 insertions(+), 26 deletions(-)

diff --git a/scripts/ver_linux b/scripts/ver_linux
index 545ec7388eb7..0b301bd1637d 100755
--- a/scripts/ver_linux
+++ b/scripts/ver_linux
@@ -13,23 +13,23 @@ BEGIN {
 	system("uname -a")
 	printf("\n")
 
-	printversion("GNU C", version("gcc -dumpversion 2>&1"))
-	printversion("GNU Make", version("make --version 2>&1"))
-	printversion("Binutils", version("ld -v 2>&1"))
-	printversion("Util-linux", version("mount --version 2>&1"))
-	printversion("Mount", version("mount --version 2>&1"))
-	printversion("Module-init-tools", version("depmod -V  2>&1"))
-	printversion("E2fsprogs", version("tune2fs 2>&1"))
-	printversion("Jfsutils", version("fsck.jfs -V 2>&1"))
-	printversion("Reiserfsprogs", version("reiserfsck -V 2>&1"))
-	printversion("Reiser4fsprogs", version("fsck.reiser4 -V 2>&1"))
-	printversion("Xfsprogs", version("xfs_db -V 2>&1"))
-	printversion("Pcmciautils", version("pccardctl -V 2>&1"))
-	printversion("Pcmcia-cs", version("cardmgr -V 2>&1"))
-	printversion("Quota-tools", version("quota -V 2>&1"))
-	printversion("PPP", version("pppd --version 2>&1"))
-	printversion("Isdn4k-utils", version("isdnctrl 2>&1"))
-	printversion("Nfs-utils", version("showmount --version 2>&1"))
+	printversion("GNU C", version("gcc -dumpversion"))
+	printversion("GNU Make", version("make --version"))
+	printversion("Binutils", version("ld -v"))
+	printversion("Util-linux", version("mount --version"))
+	printversion("Mount", version("mount --version"))
+	printversion("Module-init-tools", version("depmod -V"))
+	printversion("E2fsprogs", version("tune2fs"))
+	printversion("Jfsutils", version("fsck.jfs -V"))
+	printversion("Reiserfsprogs", version("reiserfsck -V"))
+	printversion("Reiser4fsprogs", version("fsck.reiser4 -V"))
+	printversion("Xfsprogs", version("xfs_db -V"))
+	printversion("Pcmciautils", version("pccardctl -V"))
+	printversion("Pcmcia-cs", version("cardmgr -V"))
+	printversion("Quota-tools", version("quota -V"))
+	printversion("PPP", version("pppd --version"))
+	printversion("Isdn4k-utils", version("isdnctrl"))
+	printversion("Nfs-utils", version("showmount --version"))
 
 	if (system("test -r /proc/self/maps") == 0) {
 		while (getline <"/proc/self/maps" > 0) {
@@ -42,7 +42,7 @@ BEGIN {
 		}
 	}
 
-	printversion("Dynamic linker (ldd)", version("ldd --version 2>&1"))
+	printversion("Dynamic linker (ldd)", version("ldd --version"))
 
 	while ("ldconfig -p 2>/dev/null" | getline > 0) {
 		if (/(libg|stdc)[+]+\.so/) {
@@ -53,14 +53,14 @@ BEGIN {
 	if (system("test -r " libcpp) == 0)
 		printversion("Linux C++ Library", version("readlink " libcpp))
 
-	printversion("Procps", version("ps --version 2>&1"))
-	printversion("Net-tools", version("ifconfig --version 2>&1"))
-	printversion("Kbd", version("loadkeys -V 2>&1"))
-	printversion("Console-tools", version("loadkeys -V 2>&1"))
-	printversion("Oprofile", version("oprofiled --version 2>&1"))
-	printversion("Sh-utils", version("expr --v 2>&1"))
-	printversion("Udev", version("udevadm --version 2>&1"))
-	printversion("Wireless-tools", version("iwconfig --version 2>&1"))
+	printversion("Procps", version("ps --version"))
+	printversion("Net-tools", version("ifconfig --version"))
+	printversion("Kbd", version("loadkeys -V"))
+	printversion("Console-tools", version("loadkeys -V"))
+	printversion("Oprofile", version("oprofiled --version"))
+	printversion("Sh-utils", version("expr --v"))
+	printversion("Udev", version("udevadm --version"))
+	printversion("Wireless-tools", version("iwconfig --version"))
 
 	if (system("test -r /proc/modules") == 0) {
 		while ("sort /proc/modules" | getline > 0) {
@@ -72,6 +72,7 @@ BEGIN {
 }
 
 function version(cmd,    ver) {
+	cmd = cmd " 2>&1"
 	while (cmd | getline > 0) {
 		if (!/ver_linux/ && match($0, /[0-9]+([.]?[0-9]+)+/)) {
 			ver = substr($0, RSTART, RLENGTH)
-- 
2.17.0

             reply	other threads:[~2018-05-12  9:02 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-05-12  9:02 Alexander Kapshuk [this message]
2018-05-12  9:02 ` [PATCH 2/2] ver_linux: Drop redundant calls to system() to test if file is readable Alexander Kapshuk

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