diff options
Diffstat (limited to 'pkg/sentry/fs/gofer/attr.go')
| -rw-r--r-- | pkg/sentry/fs/gofer/attr.go | 22 |
1 files changed, 16 insertions, 6 deletions
diff --git a/pkg/sentry/fs/gofer/attr.go b/pkg/sentry/fs/gofer/attr.go index 4848e2374..d481baf77 100644 --- a/pkg/sentry/fs/gofer/attr.go +++ b/pkg/sentry/fs/gofer/attr.go @@ -17,12 +17,12 @@ package gofer import ( "syscall" + "gvisor.dev/gvisor/pkg/context" "gvisor.dev/gvisor/pkg/p9" - "gvisor.dev/gvisor/pkg/sentry/context" "gvisor.dev/gvisor/pkg/sentry/fs" "gvisor.dev/gvisor/pkg/sentry/kernel/auth" ktime "gvisor.dev/gvisor/pkg/sentry/kernel/time" - "gvisor.dev/gvisor/pkg/sentry/usermem" + "gvisor.dev/gvisor/pkg/usermem" ) // getattr returns the 9p attributes of the p9.File. On success, Mode, Size, and RDev @@ -75,10 +75,18 @@ func owner(mounter fs.FileOwner, valid p9.AttrMask, pattr p9.Attr) fs.FileOwner // task's EUID/EGID. owner := mounter if valid.UID { - owner.UID = auth.KUID(pattr.UID) + if pattr.UID.Ok() { + owner.UID = auth.KUID(pattr.UID) + } else { + owner.UID = auth.KUID(auth.OverflowUID) + } } if valid.GID { - owner.GID = auth.KGID(pattr.GID) + if pattr.GID.Ok() { + owner.GID = auth.KGID(pattr.GID) + } else { + owner.GID = auth.KGID(auth.OverflowGID) + } } return owner } @@ -88,8 +96,9 @@ func bsize(pattr p9.Attr) int64 { if pattr.BlockSize > 0 { return int64(pattr.BlockSize) } - // Some files may have no clue of their block size. Better not to report - // something misleading or buggy and have a safe default. + // Some files, particularly those that are not on a local file system, + // may have no clue of their block size. Better not to report something + // misleading or buggy and have a safe default. return usermem.PageSize } @@ -149,6 +158,7 @@ func links(valid p9.AttrMask, pattr p9.Attr) uint64 { } // This node is likely backed by a file system that doesn't support links. + // // We could readdir() and count children directories to provide an accurate // link count. However this may be expensive since the gofer may be backed by remote // storage. Instead, simply return 2 links for directories and 1 for everything else |