Check for root in iscsi-gen-initiatorname

The man page is also updated

2 files changed, 16 insertions, 6 deletions

diff --git a/doc/iscsi-gen-initiatorname.8.template b/doc/iscsi-gen-initiatorname.8.template
index cd26f2d..97a6e21 100644
--- a/doc/iscsi-gen-initiatorname.8.template
+++ b/doc/iscsi-gen-initiatorname.8.template
@@ -20,6 +20,12 @@ It is an error if both the kernel command-line Initiator Name
 and the iBFT Initiator Name are both set, and they are different.
 it is also an error to try to write over an Initiator Name file
 if it read-only, or to create one if its directory is not writable.
+.P
+You
+.B must
+be
+.I root
+to run this command.
 .SH OPTIONS
 .TP
 .BI [-h]
diff --git a/utils/iscsi-gen-initiatorname.sh.template b/utils/iscsi-gen-initiatorname.sh.template
index a06d6d0..5c2bfdf 100644
--- a/utils/iscsi-gen-initiatorname.sh.template
+++ b/utils/iscsi-gen-initiatorname.sh.template
@@ -77,7 +77,7 @@ usage_and_exit()
     echo "Where OPTIONS are from:"
     echo "   -h          print usage and exit"
     echo "   -f          overwrite existing InitiatorName, if any"
-    echo "   -p IQN-PRE  set the prefix for the IQN generated (default ${DEFAULT_IQN_PREFIX})"
+    echo "   -p IQN-PRE  set prefix for generated IQN (default ${DEFAULT_IQN_PREFIX})"
     exit $xit_val
 }
 
@@ -112,7 +112,12 @@ done
 shift $(($OPTIND-1))
 
 if [ "$#" -gt 0 ] ; then
-    echo "Invalid argument(s): $*"
+    echo "Error: Invalid argument(s): $*" 1>&2
+    usage_and_exit 1
+fi
+
+if [ "$EUID" -ne 0 ] ; then
+    echo "Error: You must be root to run this command" 1>&2
     usage_and_exit 1
 fi
 
@@ -131,21 +136,20 @@ KERNEL_INAME="$(kernel_supplied_initiatorname)"
 # if we have a local initiator name and "force" is not set end it now
 if [ "$InitiatorName" -a -z "$FORCE" ] ; then
     echo "Error: you cannot overwrite the current InitiatorName unless 'force' is set." 1>&2
-    echo "Please call '$NAME -f' to update iSCSI InitiatorName, if needed." 1>&2
-    exit 1
+    usage_and_exit 1
 fi
 
 # ensure we can write the initiator name file
 if [ -r "$INAME_FILE" ] ; then
     if [ ! -w "$INAME_FILE" ] ; then
 	echo "Error: cannot update InitiatorName, write protected: $INAME_FILE" 1>&1
-	echo "Please ensure you are root and filesystem is read/write." 1>&2
+	echo "Please ensure the filesystem is read/write." 1>&2
 	exit 1
     fi
     # the file exists but we can write over it
 elif [ ! -w "$INAME_DIR" ] ; then
     echo "Error: no write permission in directory: $INAME_DIR" 1>&2
-    echo "Please ensure you are root and filesystem is read/write." 1>&2
+    echo "Please ensure the filesystem is read/write." 1>&2
     exit 1
 fi