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| author | Zach Koopmans <zkoopmans@google.com> | 2020-07-01 13:13:04 -0700 |
|---|---|---|
| committer | gVisor bot <gvisor-bot@google.com> | 2020-07-01 13:14:44 -0700 |
| commit | 6a90c88b97481a6d81b05f09d5c8ed7158225dd5 (patch) | |
| tree | e22db333e636d2dae96bcbf4f36d48eb81df3d0d /pkg/p9/p9.go | |
| parent | 68e1c870d3ef5db71226927aee703f2fba61cab7 (diff) | |
Port fallocate to VFS2.
PiperOrigin-RevId: 319283715
Diffstat (limited to 'pkg/p9/p9.go')
| -rw-r--r-- | pkg/p9/p9.go | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/pkg/p9/p9.go b/pkg/p9/p9.go index 28d851ff5..122c457d2 100644 --- a/pkg/p9/p9.go +++ b/pkg/p9/p9.go @@ -1091,6 +1091,19 @@ type AllocateMode struct { Unshare bool } +// ToAllocateMode returns an AllocateMode from a fallocate(2) mode. +func ToAllocateMode(mode uint64) AllocateMode { + return AllocateMode{ + KeepSize: mode&unix.FALLOC_FL_KEEP_SIZE != 0, + PunchHole: mode&unix.FALLOC_FL_PUNCH_HOLE != 0, + NoHideStale: mode&unix.FALLOC_FL_NO_HIDE_STALE != 0, + CollapseRange: mode&unix.FALLOC_FL_COLLAPSE_RANGE != 0, + ZeroRange: mode&unix.FALLOC_FL_ZERO_RANGE != 0, + InsertRange: mode&unix.FALLOC_FL_INSERT_RANGE != 0, + Unshare: mode&unix.FALLOC_FL_UNSHARE_RANGE != 0, + } +} + // ToLinux converts to a value compatible with fallocate(2)'s mode. func (a *AllocateMode) ToLinux() uint32 { rv := uint32(0) |