diff options
Diffstat (limited to 'tapset/dev.stp')
| -rw-r--r-- | tapset/dev.stp | 26 |
1 files changed, 24 insertions, 2 deletions
diff --git a/tapset/dev.stp b/tapset/dev.stp index 80449324..2c22031a 100644 --- a/tapset/dev.stp +++ b/tapset/dev.stp @@ -1,5 +1,5 @@ -// Device numbering tapset -// Copyright (C) 2008 Red Hat Corp. +// Device tapset +// Copyright (C) 2008, 2010 Red Hat Corp. // // This file is part of systemtap, and is free software. You can // redistribute it and/or modify it under the terms of the GNU General @@ -31,3 +31,25 @@ function usrdev2kerndev:long(dev:long) %{ /* pure */ THIS->__retvalue = new_decode_dev(THIS->dev); %} + +function bdevname:string(bdev:long) +{ + if (bdev == 0) + return "N/A" + + hd = @cast(bdev, "block_device")->bd_disk + + if (@cast(bdev, "block_device")->bd_part) + partno = @cast(bdev, "block_device")->bd_part->partno + else + partno = MINOR(@cast(bdev, "block_device")->bd_dev) + - @cast(bdev, "block_device")->bd_disk->first_minor; + + if (!partno) + return kernel_string(@cast(hd, "gendisk")->disk_name) + disk_name = kernel_string(@cast(hd, "gendisk")->disk_name) + if (isdigit(substr(disk_name, strlen(disk_name) - 1, 1))) + return sprintf("%sp%d", disk_name, partno) + else + return sprintf("%s%d", disk_name, partno) +} |