https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=253764
Bug ID: 253764
Summary: mkimg does not allocate space for partitions when
given an absolute offset
Product: Base System
Version: 11.4-STABLE
Hardware: Any
OS: Any
Status: New
Severity: Affects Only Me
Priority: ---
Component: bin
Assignee: [email protected]
Reporter: [email protected]
When mkimg(1) is asked to output a partition of a given size with a given
absolute offset into a raw image, it does not size the output file properly.
When no offset is given, the file is sized correctly:
$ mkimg -f raw -o temp.img -s mbr -p freebsd::512000
creates a file that is 1001 blocks long.
Relative offsets work well:
$ mkimg -f raw -o temp.img -s mbr -p freebsd::512000:+512
creates a file that is 1002 blocks long.
But:
$ mkimg -f raw -o temp.img -s mbr -p freebsd::512000:512
creates a file that is only 1 block long, instead of 1001.
Looking at the code, in file mkimg.c the problem seems to be that the "block"
variable is not updated with the partition size. But I could not understand the
code well enough to propose a patch, unfortunately.
Additional info:
$ uname -a
FreeBSD myhost 11.4-STABLE FreeBSD 11.4-STABLE #1 r369279: Tue Feb 16 10:16:53
CET 2021 root@myhost:/usr/obj/usr/src/sys/GENERIC amd64
$ svn info /usr/src/usr.bin/mkimg | grep Revision
Revision: 369279
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