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syscall: rm go:linkname from origRlimitNofile

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Since CL 588076 runc can do fine without the kludge. The code accessing the symbol is now guarded with `go:build !go1.23` in all supported runc branches (main: [1], release-1.1: [2]).

This reverts part of CL 587219.

Updates #67401.

For #66797.

[1]: https://github.com/opencontainers/runc/pull/4290
[2]: https://github.com/opencontainers/runc/pull/4299

Change-Id: I204843a93c36857e21ab9b43bd7aaf046e8b9787
Reviewed-on: https://go-review.googlesource.com/c/go/+/587918
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
This commit is contained in:
Kir Kolyshkin 2024-05-23 13:43:45 -07:00 committed by Gopher Robot
parent 5532427c4b
commit 532cf27059
1 changed files with 0 additions and 11 deletions
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11
src/syscall/rlimit.go
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@ -8,20 +8,9 @@ package syscall
import (
"sync/atomic"
_ "unsafe"
)
// origRlimitNofile, if non-nil, is the original soft RLIMIT_NOFILE.
//
// origRlimitNofile should be an internal detail,
// but widely used packages access it using linkname.
// Notable members of the hall of shame include:
// - github.com/opencontainers/runc
//
// Do not remove or change the type signature.
// See go.dev/issue/67401.
//
//go:linkname origRlimitNofile
var origRlimitNofile atomic.Pointer[Rlimit]
// Some systems set an artificially low soft limit on open file count, for compatibility