tree fac7b9710e5b88bdcebcbd640848d395ac3239c5
parent c486cce9baee092637cef82e1fcfd3ee8e64cbb2
author Zorro Lang <zlang@redhat.com> 1491662411 +0800
committer Cyril Hrubis <chrubis@suse.cz> 1491913380 +0200

lseek: functional SEEK_HOLE and SEEK_DATA test

This case does functional SEEK_HOLE and SEEK_DATA of lseek(2)
testing.

Since version 3.1, Linux supports the following additional values
for whence:

SEEK_DATA
    Adjust the file offset to the next location in the file greater
    than or  equal  to  offset  containing data.  If offset points
    to data, then the file offset is set to offset.

SEEK_HOLE
    Adjust the file offset to the next hole in the file greater than
    or equal to offset.  If offset points into the middle of a hole,
    then the file offset is set to offset. If there is no hole past
    offset, then the file offset is adjusted to the end of the file
    (i.e., there is an implicit hole at the end of any file).

This case will cover above description.

Signed-off-by: Zorro Lang <zlang@redhat.com>
Signed-off-by: Cyril Hrubis <chrubis@suse.cz>