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fcntl.2: ffix 

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
This commit is contained in:
Michael Kerrisk 2020-02-08 12:09:56 +01:00
parent 7b7d3b200a
commit e38bb9196d
1 changed files with 2 additions and 2 deletions
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man2/fcntl.2
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@ -1532,11 +1532,11 @@ existing writeable mappings that were created prior to the seal being set.
Any attempt to create a new writeable mapping on the memfd via Any attempt to create a new writeable mapping on the memfd via
.BR mmap (2) .BR mmap (2)
will fail with will fail with
.BR EPERM. .BR EPERM .
Also any attempts to write to the memfd via Also any attempts to write to the memfd via
.BR write (2) .BR write (2)
will fail with will fail with
.BR EPERM. .BR EPERM .
This is useful in situations where existing writable mapped regions need to be This is useful in situations where existing writable mapped regions need to be
kept intact while preventing any future writes. For example, to share a kept intact while preventing any future writes. For example, to share a
read-only memory buffer to other processes that only the sender can write to. read-only memory buffer to other processes that only the sender can write to.