Diffusion FreeBSD src repository 0321a7990b27

kqueue: Add EV_KEEPUDATA flag
0321a7990b27
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Description

kqueue: Add EV_KEEPUDATA flag

When this flag is set, operations that update an existing kevent will
not change the udata field. This can be used to NOTE_TRIGGER or
EV_{EN,DIS}ABLE events without overwriting the stashed pointer.

Reviewed by: Domagoj Stolfa <domagoj.stolfa@gmail.com>
Obtained from: CheriBSD
Sponsored by: Microsoft
Differential Revision: https://reviews.freebsd.org/D30286

Details

Provenance

nfilardo_microsoft.com	Authored on Sep 24 2021, 12:31 AM
jhb	Committed on Sep 24 2021, 12:31 AM

Differential Revision

D30286: kqueue: add EV_KEEPUDATA flag

Parents

rG701a99939fbf: libsysdecode: Permit _ in VM_PROT_(.*) names.

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jhb committed rG0321a7990b27: kqueue: Add EV_KEEPUDATA flag (authored by Nathaniel Wesley Filardo <nfilardo@microsoft.com>).Sep 24 2021, 12:31 AM

jhb added an edge: D30286: kqueue: add EV_KEEPUDATA flag.

Changes (4)

Path

Size

lib/

libc/

sys/

sys/

kern/

sys/

tests/

sys/

kqueue/

libkqueue/

rG0321a7990b27

lib/libc/sys/kqueue.2

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sys/kern/kern_event.c

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sys/sys/event.h

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tests/sys/kqueue/libkqueue/user.c

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