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Require CAP_SEEK if both O_APPEND and O_TRUNC flags are absent.
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Description

Require CAP_SEEK if both O_APPEND and O_TRUNC flags are absent.

In other words we don't require CAP_SEEK if either O_APPEND or O_TRUNC flag is
given, because O_APPEND doesn't allow to overwrite existing data and O_TRUNC
requires CAP_FTRUNCATE already.

Sponsored by: The FreeBSD Foundation

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pjdAuthored on
Parents
rS248396: Update the tests now that absence of the O_APPEND flag requires CAP_SEEK
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head/
sys/
kern/

rS248397

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head/sys/kern/vfs_syscalls.c

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