From b9e3301c3b68a1c6464a0bf0ac6e61fc0e4063d1 Mon Sep 17 00:00:00 2001
From: "tao@kernel.org" <tao@kernel.org>
Date: Wed, 11 Aug 2004 01:03:03 -0700
Subject: [PATCH] Minor POSIX-fixes for udev

The attached patch contains a few patches against udev, to remove
use of various XSI:isms and bash:isms, and to change two scripts form
/bin/bash to /bin/sh.  None of the bash-scripts in test/ uses any
bash-specific functions as far as I know, but I didn't touch them since
they aren't used runtime.

Rationale:
* Both of the /bin/bash-scripts are totally free from bashisms, hence they
  don't need to be /bin/bash; using /bin/sh instead helps (mainly)
  embedded-people

* local and source are bash:isms (well, they exist in several other
  shells as well, but they aren't part of POSIX or any of its extensions)

* -a in tests is an XSI-extension, not part of strict POSIX, and is
  easily replaced by &&
  | http://www.opengroup.org/onlinepubs/009695399/utilities/test.html

* Use of fgrep is deprecated in POSIX in favour of grep -F (though fgrep
  will remain in use for a long time...)
  | http://www.opengroup.org/onlinepubs/009695399/utilities/grep.html

The fgrep-change isn't really necessary, since fgrep can always be
implemented as a shell-script, but the rest of the changes would really
be appreciated.
---
 extras/ide-devfs.sh  | 12 +++++-------
 extras/scsi-devfs.sh |  4 ++--
 extras/start_udev    |  2 +-
 3 files changed, 8 insertions(+), 10 deletions(-)

(limited to 'extras')

diff --git a/extras/ide-devfs.sh b/extras/ide-devfs.sh
index 4d021c5e87..4f20259480 100644
--- a/extras/ide-devfs.sh
+++ b/extras/ide-devfs.sh
@@ -15,15 +15,13 @@ else
 fi
 
 get_dev_number() {
-	local x=
-	local num=0
-	local MEDIA=
-	local DRIVE="${1%%[0-9]*}"
+	num=0
+	DRIVE="${1%%[0-9]*}"
 
 	for x in /proc/ide/*/media; do
 		if [ -e "${x}" ]; then
-			MEDIA=`cat ${x}`
-			if [ "${MEDIA}" = "$2" ]; then
+			lMEDIA=`cat ${x}`
+			if [ "${lMEDIA}" = "$2" ]; then
 				num=$((${num} + 1))
 			fi
 			if [ "${x}" = "/proc/ide/${DRIVE}/media" ]; then
@@ -35,7 +33,7 @@ get_dev_number() {
 	echo $((${num} - 1))
 }
 
-if [ -z "$3" -a -f /proc/ide/${1}/media ]; then
+if [ -z "$3" ] && [ -f /proc/ide/${1}/media ]; then
 	MEDIA=`cat /proc/ide/${1}/media`
 	if [ "${MEDIA}" = "cdrom" ]; then
 		echo ide/host${HOST}/bus${BUS}/target${TARGET}/lun0/cd cdroms/cdrom`get_dev_number $1 cdrom`
diff --git a/extras/scsi-devfs.sh b/extras/scsi-devfs.sh
index 30f4553a5b..12c8aa8eb5 100644
--- a/extras/scsi-devfs.sh
+++ b/extras/scsi-devfs.sh
@@ -14,7 +14,7 @@
 # BUS="scsi", KERNEL="sg*", PROGRAM="/etc/udev/scsi-devfs.sh sg %b %n", NAME="%c{1}", SYMLINK="%c{2} %k %c{3} %c{4}"
 
 # Find out where sysfs is mounted. Exit if not available
-sysfs=`fgrep sysfs /proc/mounts | awk '{print $2}'`
+sysfs=`grep -F sysfs /proc/mounts | awk '{print $2}'`
 if [ "$sysfs" = "" ]; then
     echo "sysfs is required"
     exit 1
@@ -63,7 +63,7 @@ s_com="b${scsi_bus}t${scsi_target}u${scsi_lun}$spart"
 l_log="scsi/host$scsi_host/$l_com"
 s_log="$1/c${scsi_host}${s_com}"
 
-readlink $2 | fgrep -q pci
+readlink $2 | grep -F -q pci
 if [ "$?" != "0" ]; then
     # Not a PCI controller, show logical locations only
     echo $l_log $s_log
diff --git a/extras/start_udev b/extras/start_udev
index 4908d05b70..bbf32a1bb9 100644
--- a/extras/start_udev
+++ b/extras/start_udev
@@ -1,4 +1,4 @@
-#! /bin/bash
+#! /bin/sh
 #
 # start_udev
 #
-- 
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