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open_by_handle_at.2: Clarify MAX_HANDLE_SZ 

As hinted in the kernel source, MAX_HANDLE_SZ is a hint
rather than a promise:

    /* limit the handle size to NFSv4 handle size now */
    #define MAX_HANDLE_SZ 128

Note the "now" (probably should be "for now").
So change the description to make this clear.

Reported-by: Lennart Poettering <lennart@poettering.net>
Signed-off-by: NeilBrown <neilb@suse.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
This commit is contained in:
NeilBrown 2017-11-24 10:53:36 +11:00 committed by Michael Kerrisk
parent 9bbf42428c
commit c61adb1789
1 changed files with 2 additions and 1 deletions
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man2/open_by_handle_at.2
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@ -91,7 +91,8 @@ field should be initialized to contain the allocated size for
.BR MAX_HANDLE_SZ ,
defined in
.IR <fcntl.h> ,
specifies the maximum possible size for a file handle.)
specifies the maximum expected size for a file handle. It is not a
guaranteed upper limit as future filesystems may require more space.)
Upon successful return, the
.IR handle_bytes
field is updated to contain the number of bytes actually written to