fs: expose LOOKUP_CACHED through openat2() RESOLVE_CACHED

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Now that we support non-blocking path resolution internally, expose it
via openat2() in the struct open_how ->resolve flags. This allows
applications using openat2() to limit path resolution to the extent that
it is already cached.

If the lookup cannot be satisfied in a non-blocking manner, openat2(2)
will return -1/-EAGAIN.

Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

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Jens Axboe 2020-12-17 09:19:10 -07:00 • committed by Al Viro

parent 6c6ec2b0a3

commit 99668f6180

3 changed files with 11 additions and 1 deletions

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include/uapi/linux/openat2.h

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