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unix: add SEEK_* constants on Darwin, FreeBSD, Linux

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The Go "os" package already provides bindings for SEEK_CUR, SEEK_SET and
SEEK_END. Most operating systems also support SEEK_HOLE and SEEK_DATA,
which you can use to skip sparse regions in a file. Let's add bindings,
so we can also do this from within Go.

Change-Id: If9243b05a8f563b4bce2452aa4bff145d9442cc2
GitHub-Last-Rev: ac8aed2d4aaddc4a28aab657d027f67ba6717e19
GitHub-Pull-Request: golang/sys#112
Reviewed-on: https://go-review.googlesource.com/c/sys/+/328170
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com>
This commit is contained in:
Ed Schouten
2021-06-16 04:58:30 +00:00
committed by Tobias Klauser
parent 665e8c7367
commit e2b7044e8c
8 changed files with 37 additions and 0 deletions
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unix/zerrors_freebsd_amd64.go
+5
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@@ -1298,6 +1298,11 @@ const (
SCM_RIGHTS = 0x1
SCM_TIMESTAMP = 0x2
SCM_TIME_INFO = 0x7
SEEK_CUR = 0x1
SEEK_DATA = 0x3
SEEK_END = 0x2
SEEK_HOLE = 0x4
SEEK_SET = 0x0
SHUT_RD = 0x0
SHUT_RDWR = 0x2
SHUT_WR = 0x1