[Bug 983805] Re: Resume boot script fix makes /bin/resume unnecessary (kernel's internal swsusp)

[A Dasgupta]

Updated script:  Please discard the previous patch in post #1 and the
full script file in post #2.  Instead, use the patch in this post, or the
full script in a following post.  This should be good for testing.

[Although the previous version of the script worked in all my tests,
it has a bug which can make it fail if there are symlinks to symlinks.
Also the code is cleaned up:  Finding the major:minor numbers
for the device is now done using the busybox builtins stat/printf
instead of chasing through sysfs or /proc/partitions.  This makes
it even more close to the original klibc/kinit C program resumelib.c.]
.

** Attachment added: "Updated patch --- please discard previous version"
   https://bugs.launchpad.net/ubuntu/+source/initramfs-tools/+bug/983805/+attachment/3085991/+files/initramfs-tools-resume-boot-script-diff.v2

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https://bugs.launchpad.net/bugs/983805

Title:
  Resume boot script fix makes /bin/resume unnecessary (kernel's
  internal swsusp)

Status in “initramfs-tools” package in Ubuntu:
  New

Bug description:
  This patch to scripts/local-premount/resume makes the C program
  /bin/resume unnecessary (from klibc-utils, source resumelib.c).

  The source shows that C program /bin/resume is simply echoing
  major:minor[:offset] onto /sys/power/resume, which is exactly
  what is done in this patch, but using shell commands.

  This patch is against initramfs-tools_0.99ubuntu12, but
  the file scripts/local-premount/resume has stayed the
  same for quite a while (at least since maverick).

  I will also post the full script file.
  .

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