Don't run xfsdb if we're not root.

diff --git a/src/fill2fs b/src/fill2fs
index cf692ae70edd4acacc2502693c7aa9a6c05ddd5f..6fbc89e7e4a84ce0f8ab83157c2d8600ac7df4e7 100755 (executable)
--- a/src/fill2fs
+++ b/src/fill2fs
@@ -73,7 +73,7 @@ use File::Basename;
 chomp($os = `uname`);
 
 #
-# fsinfo: get filesystem info put it into the global namespace, assigns:
+# fsinfo: get filesystem info put it into the global namespace, initialises:
 #      $dev, $type, $blocks, $used, $avail, $cap, $mnt, $mnt_options
 #      $fsblocks, $fsblocksize, $agblocks, $agcount, $imax_pct, $logblocks
 #      $logstart, $internal
@@ -101,20 +101,22 @@ sub fsinfo {
   @mtab = split(/ +/);
   $mnt_options = $mtab[3];
 
-  # xfs_db: read only, use the default superblock, print everything
-  die("Error: $progname: can't read device: \"$dev\"\n") if (! -r $dev);
-  $_=`xfs_db -r -c sb -c p $dev`;
-  # multiline matching ^$ refers to individual lines...
-  /^dblocks = (\d+)$/m;                $fsblocks=$1;
-  /^blocksize = (\d+)$/m;      $fsblocksize=$1;
-  /^agblocks = (\d+)$/m;       $agblocks=$1;
-  /^agcount = (\d+)$/m;                $agcount=$1;
-  /^imax_pct = (\d+)$/m;       $imax_pct=$1;
-  /^logblocks = (\d+)$/m;      $logblocks=$1;
-  /^logstart = (\d+)$/m;       $logstart=$1;
-  $internal = $logstart > 0 ? " (internal)" : "";
-
-  $verbose && print STDERR <<"EOF"
+  # if we're running as root run xfs_db on the filesystem
+  if ($> == 0) {
+    # xfs_db: read only, use the default superblock, print everything
+    die("Error: $progname: can't read device: \"$dev\"\n") if (! -r $dev);
+    $_=`xfs_db -r -c sb -c p $dev`;
+    # multiline matching ^$ refers to individual lines...
+    /^dblocks = (\d+)$/m;      $fsblocks=$1;
+    /^blocksize = (\d+)$/m;    $fsblocksize=$1;
+    /^agblocks = (\d+)$/m;     $agblocks=$1;
+    /^agcount = (\d+)$/m;      $agcount=$1;
+    /^imax_pct = (\d+)$/m;     $imax_pct=$1;
+    /^logblocks = (\d+)$/m;    $logblocks=$1;
+    /^logstart = (\d+)$/m;     $logstart=$1;
+    $internal = $logstart > 0 ? " (internal)" : "";
+    
+    $verbose && print STDERR <<"EOF"
 Filesystem information:
   type=$type; device=$dev
   mount point=$mnt; mount options=$mnt_options
@@ -122,6 +124,7 @@ Filesystem information:
   total filesystem size (fs blocks)=$fsblocks; fs block size=$fsblocksize; imax_pct=$imax_pct
   agcount=$agcount; agblocks=$agblocks; logblocks=$logblocks; logstart=$logstart$internal
 EOF
+  }
 }