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fusefrontend: Filter O_CREAT in mangleOpenFlags.

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Sebastian Lackner 2019-01-07 00:21:17 +01:00 committed by rfjakob
parent aa2fa24c42
commit 2332462e78
1 changed files with 3 additions and 0 deletions
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internal/fusefrontend/fs.go
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@ -124,6 +124,9 @@ func (fs *FS) mangleOpenFlags(flags uint32) (newFlags int) {
// accesses. Running xfstests generic/013 on ext4 used to trigger lots of // accesses. Running xfstests generic/013 on ext4 used to trigger lots of
// EINVAL errors due to missing alignment. Just fall back to buffered IO. // EINVAL errors due to missing alignment. Just fall back to buffered IO.
newFlags = newFlags &^ syscallcompat.O_DIRECT newFlags = newFlags &^ syscallcompat.O_DIRECT
// Create and Open are two separate FUSE operations, so O_CREAT should not
// be part of the open flags.
newFlags = newFlags &^ syscall.O_CREAT
// We always want O_NOFOLLOW to be safe against symlink races // We always want O_NOFOLLOW to be safe against symlink races
newFlags |= syscall.O_NOFOLLOW newFlags |= syscall.O_NOFOLLOW
return newFlags return newFlags