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authorLudovic Courtès <ludo@gnu.org>2017-01-31 21:52:46 +0100
committerLudovic Courtès <ludo@gnu.org>2017-01-31 23:21:59 +0100
commit2fe4ceee18f8687de8520d28dbfefc7bc3a7e084 (patch)
tree7c5e4ebcbc688ccf2ec00cf6a937db32f698a376 /.gitignore
parent69f2b3bdf9ca333a09995d5006d78f83bb417968 (diff)
downloadguix-2fe4ceee18f8687de8520d28dbfefc7bc3a7e084.tar.gz
file-systems: Do not read superblocks past the end of a device.
Fixes <http://bugs.gnu.org/25573>.
Reported by Alex Kost <alezost@gmail.com>.

* gnu/build/file-systems.scm (seek*): New procedure.
(read-superblock): Use it instead of 'seek' and ensure it returns
OFFSET.
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