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runtime2: don't check fcntl errno in checkfds on AIX and Solaris

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On AIX and Solaris the errno value is fetched using m.mOS.perrno.
When checkfds is called, that value has not yet been set up by minit.
Since the error value doesn't really matter in checkfds,
don't bother to check it on AIX and Solaris.

Fixes #61584

Change-Id: I4e679ee3fdad4f0b833ae102597b2d6b8cb46cb6
Reviewed-on: https://go-review.googlesource.com/c/go/+/513215
Run-TryBot: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Ian Lance Taylor <iant@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: Roland Shoemaker <roland@golang.org>
Run-TryBot: Ian Lance Taylor <iant@google.com>
This commit is contained in:
Ian Lance Taylor 2023-07-25 15:14:03 -07:00 committed by Gopher Robot
parent 09c886d393
commit 12bd2445af
1 changed files with 10 additions and 0 deletions
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10
src/runtime/fds_unix.go
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@ -28,6 +28,16 @@ func checkfds() {
if ret >= 0 {
continue
}
// On AIX and Solaris we can't get the right errno
// value this early in program startup,
// because we haven't yet called minit
// which sets m.mOS.perrno.
// Just assume that the error is EBADF.
if GOOS == "aix" || GOOS == "solaris" {
errno = EBADF
}
if errno != EBADF {
print("runtime: unexpected error while checking standard file descriptor ", i, ", errno=", errno, "\n")
throw("cannot open standard fds")