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| author | Jamie Liu <jamieliu@google.com> | 2019-11-06 17:10:30 -0800 |
|---|---|---|
| committer | gVisor bot <gvisor-bot@google.com> | 2019-11-06 17:11:58 -0800 |
| commit | f8ffadddb39e132605f0ef3e3d39e5d7ad6e0ecf (patch) | |
| tree | dd66085f179f7702dacaa7686e7b80fdfa4a5ede /pkg/sentry/hostcpu/hostcpu.go | |
| parent | e63db5e7bbf8decc6f799965f54fcf7aa6673527 (diff) | |
Add p9.OpenTruncate.
This is required to implement O_TRUNC correctly on filesystems backed by
gofers.
9P2000.L: "lopen prepares fid for file I/O. flags contains Linux open(2) flags
bits, e.g. O_RDONLY, O_RDWR, O_WRONLY."
open(2): "The argument flags must include one of the following access modes:
O_RDONLY, O_WRONLY, or O_RDWR. ... In addition, zero or more file creation
flags and file status flags can be bitwise-or'd in flags."
The reference 9P2000.L implementation also appears to expect arbitrary flags,
not just access modes, in Tlopen.flags:
https://github.com/chaos/diod/blob/master/diod/ops.c#L703
PiperOrigin-RevId: 278972683
Diffstat (limited to 'pkg/sentry/hostcpu/hostcpu.go')
0 files changed, 0 insertions, 0 deletions