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os: allow direntries to have zero inodes on Linux

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Some Linux filesystems have been known to return valid enties with
zero inodes. This new behavior also puts Go in agreement with recent
glibc.

Fixes #76428

Change-Id: Ieaf50739a294915a3ea2ef8c5a3bb2a91a186881
GitHub-Last-Rev: 8f83d009ef
GitHub-Pull-Request: golang/go#76448
Reviewed-on: https://go-review.googlesource.com/c/go/+/724220
Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Auto-Submit: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
This commit is contained in:
Dave Vasilevsky
2025-11-25 03:55:45 +00:00
committed by Gopher Robot
parent f1bbc66a10
commit cec4d4303f
2 changed files with 4 additions and 3 deletions
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3
src/os/dir_unix.go
View File

@@ -112,7 +112,8 @@ func (f *File) readdir(n int, mode readdirMode) (names []string, dirents []DirEn
// or might expose a remote file system which does not have the concept
// of inodes. Therefore, we cannot make the assumption that it is safe
// to skip entries with zero inodes.
if ino == 0 && runtime.GOOS != "wasip1" {
// Some Linux filesystems (old XFS, FUSE) can return valid files with zero inodes.
if ino == 0 && runtime.GOOS != "linux" && runtime.GOOS != "wasip1" {
continue
}
const namoff = uint64(unsafe.Offsetof(syscall.Dirent{}.Name))

4
src/syscall/dirent.go
View File

@@ -73,8 +73,8 @@ func ParseDirent(buf []byte, max int, names []string) (consumed int, count int,
break
}
// See src/os/dir_unix.go for the reason why this condition is
// excluded on wasip1.
if ino == 0 && runtime.GOOS != "wasip1" { // File absent in directory.
// excluded on wasip1 and linux.
if ino == 0 && runtime.GOOS != "linux" && runtime.GOOS != "wasip1" { // File absent in directory.
continue
}
const namoff = uint64(unsafe.Offsetof(Dirent{}.Name))