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syscall: optimize Getwd on aix

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When looking for \0, use clen which may be optimized.

Also, return EINVAL when returned string is empty.

This makes it similar to how it is implemented in *bsd and solaris.

Change-Id: I3e37ed25f47110eafd12c80291f7746de9db7b23
Reviewed-on: https://go-review.googlesource.com/c/go/+/606902
TryBot-Bypass: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com>
Auto-Submit: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Run-TryBot: Cherry Mui <cherryyz@google.com>
This commit is contained in:
Kir Kolyshkin 2024-08-19 17:40:55 -07:00 committed by Ian Lance Taylor
parent b5ee80a85a
commit 4a9d98d49a
1 changed files with 4 additions and 4 deletions
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8
src/syscall/syscall_aix.go
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@ -119,11 +119,11 @@ func Getwd() (ret string, err error) {
b := make([]byte, len)
err := getcwd(&b[0], len)
if err == nil {
i := 0
for b[i] != 0 {
i++
n := clen(b[:])
if n < 1 {
return "", EINVAL
}
return string(b[0:i]), nil
return string(b[:n]), nil
}
if err != ERANGE {
return "", err