diff options
Diffstat (limited to 'pkg')
35 files changed, 355 insertions, 127 deletions
diff --git a/pkg/abi/linux/linux_abi_autogen_unsafe.go b/pkg/abi/linux/linux_abi_autogen_unsafe.go index c7941c49d..3629a5e8f 100644 --- a/pkg/abi/linux/linux_abi_autogen_unsafe.go +++ b/pkg/abi/linux/linux_abi_autogen_unsafe.go @@ -1125,7 +1125,7 @@ func (s *Statx) UnmarshalUnsafe(src []byte) { // CopyOutN implements marshal.Marshallable.CopyOutN. //go:nosplit func (s *Statx) CopyOutN(cc marshal.CopyContext, addr usermem.Addr, limit int) (int, error) { - if !s.Ctime.Packed() && s.Mtime.Packed() && s.Atime.Packed() && s.Btime.Packed() { + if !s.Atime.Packed() && s.Btime.Packed() && s.Ctime.Packed() && s.Mtime.Packed() { // Type Statx doesn't have a packed layout in memory, fall back to MarshalBytes. buf := cc.CopyScratchBuffer(s.SizeBytes()) // escapes: okay. s.MarshalBytes(buf) // escapes: fallback. @@ -1656,7 +1656,7 @@ func (f *FUSEHeaderIn) CopyIn(cc marshal.CopyContext, addr usermem.Addr) (int, e // WriteTo implements io.WriterTo.WriteTo. func (f *FUSEHeaderIn) WriteTo(writer io.Writer) (int64, error) { - if !f.Opcode.Packed() && f.Unique.Packed() { + if !f.Unique.Packed() && f.Opcode.Packed() { // Type FUSEHeaderIn doesn't have a packed layout in memory, fall back to MarshalBytes. buf := make([]byte, f.SizeBytes()) f.MarshalBytes(buf) @@ -4421,7 +4421,7 @@ func (i *IPTEntry) Packed() bool { // MarshalUnsafe implements marshal.Marshallable.MarshalUnsafe. func (i *IPTEntry) MarshalUnsafe(dst []byte) { - if i.Counters.Packed() && i.IP.Packed() { + if i.IP.Packed() && i.Counters.Packed() { safecopy.CopyIn(dst, unsafe.Pointer(i)) } else { // Type IPTEntry doesn't have a packed layout in memory, fallback to MarshalBytes. @@ -4442,7 +4442,7 @@ func (i *IPTEntry) UnmarshalUnsafe(src []byte) { // CopyOutN implements marshal.Marshallable.CopyOutN. //go:nosplit func (i *IPTEntry) CopyOutN(cc marshal.CopyContext, addr usermem.Addr, limit int) (int, error) { - if !i.IP.Packed() && i.Counters.Packed() { + if !i.Counters.Packed() && i.IP.Packed() { // Type IPTEntry doesn't have a packed layout in memory, fall back to MarshalBytes. buf := cc.CopyScratchBuffer(i.SizeBytes()) // escapes: okay. i.MarshalBytes(buf) // escapes: fallback. @@ -4604,12 +4604,12 @@ func (i *IPTIP) UnmarshalBytes(src []byte) { // Packed implements marshal.Marshallable.Packed. //go:nosplit func (i *IPTIP) Packed() bool { - return i.Src.Packed() && i.Dst.Packed() && i.SrcMask.Packed() && i.DstMask.Packed() + return i.DstMask.Packed() && i.Src.Packed() && i.Dst.Packed() && i.SrcMask.Packed() } // MarshalUnsafe implements marshal.Marshallable.MarshalUnsafe. func (i *IPTIP) MarshalUnsafe(dst []byte) { - if i.DstMask.Packed() && i.Src.Packed() && i.Dst.Packed() && i.SrcMask.Packed() { + if i.Src.Packed() && i.Dst.Packed() && i.SrcMask.Packed() && i.DstMask.Packed() { safecopy.CopyIn(dst, unsafe.Pointer(i)) } else { // Type IPTIP doesn't have a packed layout in memory, fallback to MarshalBytes. @@ -4630,7 +4630,7 @@ func (i *IPTIP) UnmarshalUnsafe(src []byte) { // CopyOutN implements marshal.Marshallable.CopyOutN. //go:nosplit func (i *IPTIP) CopyOutN(cc marshal.CopyContext, addr usermem.Addr, limit int) (int, error) { - if !i.DstMask.Packed() && i.Src.Packed() && i.Dst.Packed() && i.SrcMask.Packed() { + if !i.Src.Packed() && i.Dst.Packed() && i.SrcMask.Packed() && i.DstMask.Packed() { // Type IPTIP doesn't have a packed layout in memory, fall back to MarshalBytes. buf := cc.CopyScratchBuffer(i.SizeBytes()) // escapes: okay. i.MarshalBytes(buf) // escapes: fallback. @@ -4660,7 +4660,7 @@ func (i *IPTIP) CopyOut(cc marshal.CopyContext, addr usermem.Addr) (int, error) // CopyIn implements marshal.Marshallable.CopyIn. //go:nosplit func (i *IPTIP) CopyIn(cc marshal.CopyContext, addr usermem.Addr) (int, error) { - if !i.Src.Packed() && i.Dst.Packed() && i.SrcMask.Packed() && i.DstMask.Packed() { + if !i.Dst.Packed() && i.SrcMask.Packed() && i.DstMask.Packed() && i.Src.Packed() { // Type IPTIP doesn't have a packed layout in memory, fall back to UnmarshalBytes. buf := cc.CopyScratchBuffer(i.SizeBytes()) // escapes: okay. length, err := cc.CopyInBytes(addr, buf) // escapes: okay. @@ -4686,7 +4686,7 @@ func (i *IPTIP) CopyIn(cc marshal.CopyContext, addr usermem.Addr) (int, error) { // WriteTo implements io.WriterTo.WriteTo. func (i *IPTIP) WriteTo(writer io.Writer) (int64, error) { - if !i.SrcMask.Packed() && i.DstMask.Packed() && i.Src.Packed() && i.Dst.Packed() { + if !i.Src.Packed() && i.Dst.Packed() && i.SrcMask.Packed() && i.DstMask.Packed() { // Type IPTIP doesn't have a packed layout in memory, fall back to MarshalBytes. buf := make([]byte, i.SizeBytes()) i.MarshalBytes(buf) @@ -5395,7 +5395,7 @@ func (i *IP6TEntry) UnmarshalBytes(src []byte) { // Packed implements marshal.Marshallable.Packed. //go:nosplit func (i *IP6TEntry) Packed() bool { - return i.IPv6.Packed() && i.Counters.Packed() + return i.Counters.Packed() && i.IPv6.Packed() } // MarshalUnsafe implements marshal.Marshallable.MarshalUnsafe. @@ -5410,7 +5410,7 @@ func (i *IP6TEntry) MarshalUnsafe(dst []byte) { // UnmarshalUnsafe implements marshal.Marshallable.UnmarshalUnsafe. func (i *IP6TEntry) UnmarshalUnsafe(src []byte) { - if i.Counters.Packed() && i.IPv6.Packed() { + if i.IPv6.Packed() && i.Counters.Packed() { safecopy.CopyOut(unsafe.Pointer(i), src) } else { // Type IP6TEntry doesn't have a packed layout in memory, fallback to UnmarshalBytes. @@ -5597,7 +5597,7 @@ func (i *IP6TIP) Packed() bool { // MarshalUnsafe implements marshal.Marshallable.MarshalUnsafe. func (i *IP6TIP) MarshalUnsafe(dst []byte) { - if i.Dst.Packed() && i.SrcMask.Packed() && i.DstMask.Packed() && i.Src.Packed() { + if i.Src.Packed() && i.Dst.Packed() && i.SrcMask.Packed() && i.DstMask.Packed() { safecopy.CopyIn(dst, unsafe.Pointer(i)) } else { // Type IP6TIP doesn't have a packed layout in memory, fallback to MarshalBytes. @@ -5607,7 +5607,7 @@ func (i *IP6TIP) MarshalUnsafe(dst []byte) { // UnmarshalUnsafe implements marshal.Marshallable.UnmarshalUnsafe. func (i *IP6TIP) UnmarshalUnsafe(src []byte) { - if i.Dst.Packed() && i.SrcMask.Packed() && i.DstMask.Packed() && i.Src.Packed() { + if i.Src.Packed() && i.Dst.Packed() && i.SrcMask.Packed() && i.DstMask.Packed() { safecopy.CopyOut(unsafe.Pointer(i), src) } else { // Type IP6TIP doesn't have a packed layout in memory, fallback to UnmarshalBytes. @@ -5618,7 +5618,7 @@ func (i *IP6TIP) UnmarshalUnsafe(src []byte) { // CopyOutN implements marshal.Marshallable.CopyOutN. //go:nosplit func (i *IP6TIP) CopyOutN(cc marshal.CopyContext, addr usermem.Addr, limit int) (int, error) { - if !i.SrcMask.Packed() && i.DstMask.Packed() && i.Src.Packed() && i.Dst.Packed() { + if !i.Dst.Packed() && i.SrcMask.Packed() && i.DstMask.Packed() && i.Src.Packed() { // Type IP6TIP doesn't have a packed layout in memory, fall back to MarshalBytes. buf := cc.CopyScratchBuffer(i.SizeBytes()) // escapes: okay. i.MarshalBytes(buf) // escapes: fallback. @@ -5648,7 +5648,7 @@ func (i *IP6TIP) CopyOut(cc marshal.CopyContext, addr usermem.Addr) (int, error) // CopyIn implements marshal.Marshallable.CopyIn. //go:nosplit func (i *IP6TIP) CopyIn(cc marshal.CopyContext, addr usermem.Addr) (int, error) { - if !i.Dst.Packed() && i.SrcMask.Packed() && i.DstMask.Packed() && i.Src.Packed() { + if !i.SrcMask.Packed() && i.DstMask.Packed() && i.Src.Packed() && i.Dst.Packed() { // Type IP6TIP doesn't have a packed layout in memory, fall back to UnmarshalBytes. buf := cc.CopyScratchBuffer(i.SizeBytes()) // escapes: okay. length, err := cc.CopyInBytes(addr, buf) // escapes: okay. @@ -6167,7 +6167,7 @@ func (r *Rusage) UnmarshalBytes(src []byte) { // Packed implements marshal.Marshallable.Packed. //go:nosplit func (r *Rusage) Packed() bool { - return r.STime.Packed() && r.UTime.Packed() + return r.UTime.Packed() && r.STime.Packed() } // MarshalUnsafe implements marshal.Marshallable.MarshalUnsafe. @@ -6314,7 +6314,7 @@ func (s *SemidDS) UnmarshalBytes(src []byte) { // Packed implements marshal.Marshallable.Packed. //go:nosplit func (s *SemidDS) Packed() bool { - return s.SemCTime.Packed() && s.SemPerm.Packed() && s.SemOTime.Packed() + return s.SemPerm.Packed() && s.SemOTime.Packed() && s.SemCTime.Packed() } // MarshalUnsafe implements marshal.Marshallable.MarshalUnsafe. @@ -6396,7 +6396,7 @@ func (s *SemidDS) CopyIn(cc marshal.CopyContext, addr usermem.Addr) (int, error) // WriteTo implements io.WriterTo.WriteTo. func (s *SemidDS) WriteTo(writer io.Writer) (int64, error) { - if !s.SemCTime.Packed() && s.SemPerm.Packed() && s.SemOTime.Packed() { + if !s.SemPerm.Packed() && s.SemOTime.Packed() && s.SemCTime.Packed() { // Type SemidDS doesn't have a packed layout in memory, fall back to MarshalBytes. buf := make([]byte, s.SizeBytes()) s.MarshalBytes(buf) @@ -6661,12 +6661,12 @@ func (s *ShmidDS) UnmarshalBytes(src []byte) { // Packed implements marshal.Marshallable.Packed. //go:nosplit func (s *ShmidDS) Packed() bool { - return s.ShmPerm.Packed() && s.ShmAtime.Packed() && s.ShmDtime.Packed() && s.ShmCtime.Packed() + return s.ShmDtime.Packed() && s.ShmCtime.Packed() && s.ShmPerm.Packed() && s.ShmAtime.Packed() } // MarshalUnsafe implements marshal.Marshallable.MarshalUnsafe. func (s *ShmidDS) MarshalUnsafe(dst []byte) { - if s.ShmDtime.Packed() && s.ShmCtime.Packed() && s.ShmPerm.Packed() && s.ShmAtime.Packed() { + if s.ShmPerm.Packed() && s.ShmAtime.Packed() && s.ShmDtime.Packed() && s.ShmCtime.Packed() { safecopy.CopyIn(dst, unsafe.Pointer(s)) } else { // Type ShmidDS doesn't have a packed layout in memory, fallback to MarshalBytes. @@ -6676,7 +6676,7 @@ func (s *ShmidDS) MarshalUnsafe(dst []byte) { // UnmarshalUnsafe implements marshal.Marshallable.UnmarshalUnsafe. func (s *ShmidDS) UnmarshalUnsafe(src []byte) { - if s.ShmPerm.Packed() && s.ShmAtime.Packed() && s.ShmDtime.Packed() && s.ShmCtime.Packed() { + if s.ShmDtime.Packed() && s.ShmCtime.Packed() && s.ShmPerm.Packed() && s.ShmAtime.Packed() { safecopy.CopyOut(unsafe.Pointer(s), src) } else { // Type ShmidDS doesn't have a packed layout in memory, fallback to UnmarshalBytes. @@ -6743,7 +6743,7 @@ func (s *ShmidDS) CopyIn(cc marshal.CopyContext, addr usermem.Addr) (int, error) // WriteTo implements io.WriterTo.WriteTo. func (s *ShmidDS) WriteTo(writer io.Writer) (int64, error) { - if !s.ShmCtime.Packed() && s.ShmPerm.Packed() && s.ShmAtime.Packed() && s.ShmDtime.Packed() { + if !s.ShmPerm.Packed() && s.ShmAtime.Packed() && s.ShmDtime.Packed() && s.ShmCtime.Packed() { // Type ShmidDS doesn't have a packed layout in memory, fall back to MarshalBytes. buf := make([]byte, s.SizeBytes()) s.MarshalBytes(buf) @@ -9128,12 +9128,12 @@ func (t *Tms) UnmarshalBytes(src []byte) { // Packed implements marshal.Marshallable.Packed. //go:nosplit func (t *Tms) Packed() bool { - return t.UTime.Packed() && t.STime.Packed() && t.CUTime.Packed() && t.CSTime.Packed() + return t.CSTime.Packed() && t.UTime.Packed() && t.STime.Packed() && t.CUTime.Packed() } // MarshalUnsafe implements marshal.Marshallable.MarshalUnsafe. func (t *Tms) MarshalUnsafe(dst []byte) { - if t.UTime.Packed() && t.STime.Packed() && t.CUTime.Packed() && t.CSTime.Packed() { + if t.CUTime.Packed() && t.CSTime.Packed() && t.UTime.Packed() && t.STime.Packed() { safecopy.CopyIn(dst, unsafe.Pointer(t)) } else { // Type Tms doesn't have a packed layout in memory, fallback to MarshalBytes. @@ -9143,7 +9143,7 @@ func (t *Tms) MarshalUnsafe(dst []byte) { // UnmarshalUnsafe implements marshal.Marshallable.UnmarshalUnsafe. func (t *Tms) UnmarshalUnsafe(src []byte) { - if t.CSTime.Packed() && t.UTime.Packed() && t.STime.Packed() && t.CUTime.Packed() { + if t.UTime.Packed() && t.STime.Packed() && t.CUTime.Packed() && t.CSTime.Packed() { safecopy.CopyOut(unsafe.Pointer(t), src) } else { // Type Tms doesn't have a packed layout in memory, fallback to UnmarshalBytes. @@ -9154,7 +9154,7 @@ func (t *Tms) UnmarshalUnsafe(src []byte) { // CopyOutN implements marshal.Marshallable.CopyOutN. //go:nosplit func (t *Tms) CopyOutN(cc marshal.CopyContext, addr usermem.Addr, limit int) (int, error) { - if !t.CUTime.Packed() && t.CSTime.Packed() && t.UTime.Packed() && t.STime.Packed() { + if !t.UTime.Packed() && t.STime.Packed() && t.CUTime.Packed() && t.CSTime.Packed() { // Type Tms doesn't have a packed layout in memory, fall back to MarshalBytes. buf := cc.CopyScratchBuffer(t.SizeBytes()) // escapes: okay. t.MarshalBytes(buf) // escapes: fallback. @@ -9184,7 +9184,7 @@ func (t *Tms) CopyOut(cc marshal.CopyContext, addr usermem.Addr) (int, error) { // CopyIn implements marshal.Marshallable.CopyIn. //go:nosplit func (t *Tms) CopyIn(cc marshal.CopyContext, addr usermem.Addr) (int, error) { - if !t.UTime.Packed() && t.STime.Packed() && t.CUTime.Packed() && t.CSTime.Packed() { + if !t.CUTime.Packed() && t.CSTime.Packed() && t.UTime.Packed() && t.STime.Packed() { // Type Tms doesn't have a packed layout in memory, fall back to UnmarshalBytes. buf := cc.CopyScratchBuffer(t.SizeBytes()) // escapes: okay. length, err := cc.CopyInBytes(addr, buf) // escapes: okay. @@ -9210,7 +9210,7 @@ func (t *Tms) CopyIn(cc marshal.CopyContext, addr usermem.Addr) (int, error) { // WriteTo implements io.WriterTo.WriteTo. func (t *Tms) WriteTo(writer io.Writer) (int64, error) { - if !t.UTime.Packed() && t.STime.Packed() && t.CUTime.Packed() && t.CSTime.Packed() { + if !t.CSTime.Packed() && t.UTime.Packed() && t.STime.Packed() && t.CUTime.Packed() { // Type Tms doesn't have a packed layout in memory, fall back to MarshalBytes. buf := make([]byte, t.SizeBytes()) t.MarshalBytes(buf) diff --git a/pkg/abi/linux/linux_amd64_abi_autogen_unsafe.go b/pkg/abi/linux/linux_amd64_abi_autogen_unsafe.go index a232ddf7b..c93f41e3a 100644 --- a/pkg/abi/linux/linux_amd64_abi_autogen_unsafe.go +++ b/pkg/abi/linux/linux_amd64_abi_autogen_unsafe.go @@ -288,7 +288,7 @@ func (s *Stat) UnmarshalBytes(src []byte) { // Packed implements marshal.Marshallable.Packed. //go:nosplit func (s *Stat) Packed() bool { - return s.ATime.Packed() && s.MTime.Packed() && s.CTime.Packed() + return s.MTime.Packed() && s.CTime.Packed() && s.ATime.Packed() } // MarshalUnsafe implements marshal.Marshallable.MarshalUnsafe. @@ -303,7 +303,7 @@ func (s *Stat) MarshalUnsafe(dst []byte) { // UnmarshalUnsafe implements marshal.Marshallable.UnmarshalUnsafe. func (s *Stat) UnmarshalUnsafe(src []byte) { - if s.ATime.Packed() && s.MTime.Packed() && s.CTime.Packed() { + if s.CTime.Packed() && s.ATime.Packed() && s.MTime.Packed() { safecopy.CopyOut(unsafe.Pointer(s), src) } else { // Type Stat doesn't have a packed layout in memory, fallback to UnmarshalBytes. diff --git a/pkg/abi/linux/linux_arm64_abi_autogen_unsafe.go b/pkg/abi/linux/linux_arm64_abi_autogen_unsafe.go index bcf5496c0..72142d80e 100644 --- a/pkg/abi/linux/linux_arm64_abi_autogen_unsafe.go +++ b/pkg/abi/linux/linux_arm64_abi_autogen_unsafe.go @@ -295,7 +295,7 @@ func (s *Stat) UnmarshalBytes(src []byte) { // Packed implements marshal.Marshallable.Packed. //go:nosplit func (s *Stat) Packed() bool { - return s.ATime.Packed() && s.MTime.Packed() && s.CTime.Packed() + return s.CTime.Packed() && s.ATime.Packed() && s.MTime.Packed() } // MarshalUnsafe implements marshal.Marshallable.MarshalUnsafe. @@ -321,7 +321,7 @@ func (s *Stat) UnmarshalUnsafe(src []byte) { // CopyOutN implements marshal.Marshallable.CopyOutN. //go:nosplit func (s *Stat) CopyOutN(cc marshal.CopyContext, addr usermem.Addr, limit int) (int, error) { - if !s.ATime.Packed() && s.MTime.Packed() && s.CTime.Packed() { + if !s.CTime.Packed() && s.ATime.Packed() && s.MTime.Packed() { // Type Stat doesn't have a packed layout in memory, fall back to MarshalBytes. buf := cc.CopyScratchBuffer(s.SizeBytes()) // escapes: okay. s.MarshalBytes(buf) // escapes: fallback. @@ -377,7 +377,7 @@ func (s *Stat) CopyIn(cc marshal.CopyContext, addr usermem.Addr) (int, error) { // WriteTo implements io.WriterTo.WriteTo. func (s *Stat) WriteTo(writer io.Writer) (int64, error) { - if !s.ATime.Packed() && s.MTime.Packed() && s.CTime.Packed() { + if !s.CTime.Packed() && s.ATime.Packed() && s.MTime.Packed() { // Type Stat doesn't have a packed layout in memory, fall back to MarshalBytes. buf := make([]byte, s.SizeBytes()) s.MarshalBytes(buf) diff --git a/pkg/sentry/fsimpl/devpts/root_inode_refs.go b/pkg/sentry/fsimpl/devpts/root_inode_refs.go index b860819f0..4abb66431 100644 --- a/pkg/sentry/fsimpl/devpts/root_inode_refs.go +++ b/pkg/sentry/fsimpl/devpts/root_inode_refs.go @@ -1,12 +1,11 @@ package devpts import ( - "sync/atomic" - "fmt" "gvisor.dev/gvisor/pkg/log" refs_vfs1 "gvisor.dev/gvisor/pkg/refs" "runtime" + "sync/atomic" ) // ownerType is used to customize logging. Note that we use a pointer to T so diff --git a/pkg/sentry/fsimpl/fuse/inode_refs.go b/pkg/sentry/fsimpl/fuse/inode_refs.go index 646042846..4fb4d4da7 100644 --- a/pkg/sentry/fsimpl/fuse/inode_refs.go +++ b/pkg/sentry/fsimpl/fuse/inode_refs.go @@ -1,12 +1,11 @@ package fuse import ( - "sync/atomic" - "fmt" "gvisor.dev/gvisor/pkg/log" refs_vfs1 "gvisor.dev/gvisor/pkg/refs" "runtime" + "sync/atomic" ) // ownerType is used to customize logging. Note that we use a pointer to T so diff --git a/pkg/sentry/fsimpl/gofer/filesystem.go b/pkg/sentry/fsimpl/gofer/filesystem.go index 16abc59dc..97b9165cc 100644 --- a/pkg/sentry/fsimpl/gofer/filesystem.go +++ b/pkg/sentry/fsimpl/gofer/filesystem.go @@ -1311,6 +1311,9 @@ func (fs *filesystem) RenameAt(ctx context.Context, rp *vfs.ResolvingPath, oldPa if !renamed.isDir() { return syserror.EISDIR } + if genericIsAncestorDentry(replaced, renamed) { + return syserror.ENOTEMPTY + } } else { if rp.MustBeDir() || renamed.isDir() { return syserror.ENOTDIR @@ -1361,14 +1364,15 @@ func (fs *filesystem) RenameAt(ctx context.Context, rp *vfs.ResolvingPath, oldPa // with reference counts and queue oldParent for checkCachingLocked if the // parent isn't actually changing. if oldParent != newParent { + oldParent.decRefLocked() ds = appendDentry(ds, oldParent) newParent.IncRef() if renamed.isSynthetic() { oldParent.syntheticChildren-- newParent.syntheticChildren++ } + renamed.parent = newParent } - renamed.parent = newParent renamed.name = newName if newParent.children == nil { newParent.children = make(map[string]*dentry) diff --git a/pkg/sentry/fsimpl/host/connected_endpoint_refs.go b/pkg/sentry/fsimpl/host/connected_endpoint_refs.go index 670166c76..225f59782 100644 --- a/pkg/sentry/fsimpl/host/connected_endpoint_refs.go +++ b/pkg/sentry/fsimpl/host/connected_endpoint_refs.go @@ -1,12 +1,11 @@ package host import ( - "sync/atomic" - "fmt" "gvisor.dev/gvisor/pkg/log" refs_vfs1 "gvisor.dev/gvisor/pkg/refs" "runtime" + "sync/atomic" ) // ownerType is used to customize logging. Note that we use a pointer to T so diff --git a/pkg/sentry/fsimpl/host/inode_refs.go b/pkg/sentry/fsimpl/host/inode_refs.go index 49c57c113..4075eae17 100644 --- a/pkg/sentry/fsimpl/host/inode_refs.go +++ b/pkg/sentry/fsimpl/host/inode_refs.go @@ -1,12 +1,11 @@ package host import ( - "sync/atomic" - "fmt" "gvisor.dev/gvisor/pkg/log" refs_vfs1 "gvisor.dev/gvisor/pkg/refs" "runtime" + "sync/atomic" ) // ownerType is used to customize logging. Note that we use a pointer to T so diff --git a/pkg/sentry/fsimpl/kernfs/dentry_refs.go b/pkg/sentry/fsimpl/kernfs/dentry_refs.go index 0269851c9..f99d4941a 100644 --- a/pkg/sentry/fsimpl/kernfs/dentry_refs.go +++ b/pkg/sentry/fsimpl/kernfs/dentry_refs.go @@ -1,12 +1,11 @@ package kernfs import ( - "sync/atomic" - "fmt" "gvisor.dev/gvisor/pkg/log" refs_vfs1 "gvisor.dev/gvisor/pkg/refs" "runtime" + "sync/atomic" ) // ownerType is used to customize logging. Note that we use a pointer to T so diff --git a/pkg/sentry/fsimpl/kernfs/static_directory_refs.go b/pkg/sentry/fsimpl/kernfs/static_directory_refs.go index 866620ef9..2b258010e 100644 --- a/pkg/sentry/fsimpl/kernfs/static_directory_refs.go +++ b/pkg/sentry/fsimpl/kernfs/static_directory_refs.go @@ -1,12 +1,11 @@ package kernfs import ( - "sync/atomic" - "fmt" "gvisor.dev/gvisor/pkg/log" refs_vfs1 "gvisor.dev/gvisor/pkg/refs" "runtime" + "sync/atomic" ) // ownerType is used to customize logging. Note that we use a pointer to T so diff --git a/pkg/sentry/fsimpl/overlay/copy_up.go b/pkg/sentry/fsimpl/overlay/copy_up.go index 360b77ef6..73b126669 100644 --- a/pkg/sentry/fsimpl/overlay/copy_up.go +++ b/pkg/sentry/fsimpl/overlay/copy_up.go @@ -92,7 +92,7 @@ func (d *dentry) copyUpLocked(ctx context.Context) error { err = vfsObj.UnlinkAt(ctx, d.fs.creds, &newpop) } if err != nil { - ctx.Warningf("Unrecoverable overlayfs inconsistency: failed to delete upper layer file after copy-up error: %v", err) + panic(fmt.Sprintf("unrecoverable overlayfs inconsistency: failed to delete upper layer file after copy-up error: %v", err)) } if d.upperVD.Ok() { d.upperVD.DecRef(ctx) @@ -362,7 +362,7 @@ func (d *dentry) copyXattrsLocked(ctx context.Context) error { // There are no guarantees as to the contents of lowerXattrs. return nil } - ctx.Warningf("failed to copy up xattrs because ListXattrAt failed: %v", err) + ctx.Infof("failed to copy up xattrs because ListXattrAt failed: %v", err) return err } @@ -374,14 +374,48 @@ func (d *dentry) copyXattrsLocked(ctx context.Context) error { value, err := vfsObj.GetXattrAt(ctx, d.fs.creds, lowerPop, &vfs.GetXattrOptions{Name: name, Size: 0}) if err != nil { - ctx.Warningf("failed to copy up xattrs because GetXattrAt failed: %v", err) + ctx.Infof("failed to copy up xattrs because GetXattrAt failed: %v", err) return err } if err := vfsObj.SetXattrAt(ctx, d.fs.creds, upperPop, &vfs.SetXattrOptions{Name: name, Value: value}); err != nil { - ctx.Warningf("failed to copy up xattrs because SetXattrAt failed: %v", err) + ctx.Infof("failed to copy up xattrs because SetXattrAt failed: %v", err) return err } } return nil } + +// copyUpDescendantsLocked ensures that all descendants of d are copied up. +// +// Preconditions: +// * filesystem.renameMu must be locked. +// * d.dirMu must be locked. +// * d.isDir(). +func (d *dentry) copyUpDescendantsLocked(ctx context.Context, ds **[]*dentry) error { + dirents, err := d.getDirentsLocked(ctx) + if err != nil { + return err + } + for _, dirent := range dirents { + if dirent.Name == "." || dirent.Name == ".." { + continue + } + child, err := d.fs.getChildLocked(ctx, d, dirent.Name, ds) + if err != nil { + return err + } + if err := child.copyUpLocked(ctx); err != nil { + return err + } + if child.isDir() { + child.dirMu.Lock() + err := child.copyUpDescendantsLocked(ctx, ds) + child.dirMu.Unlock() + if err != nil { + return err + } + } + } + return nil +} diff --git a/pkg/sentry/fsimpl/overlay/directory.go b/pkg/sentry/fsimpl/overlay/directory.go index b1b292e83..7ab42e71e 100644 --- a/pkg/sentry/fsimpl/overlay/directory.go +++ b/pkg/sentry/fsimpl/overlay/directory.go @@ -143,7 +143,14 @@ func (d *dentry) getDirents(ctx context.Context) ([]vfs.Dirent, error) { defer d.fs.renameMu.RUnlock() d.dirMu.Lock() defer d.dirMu.Unlock() + return d.getDirentsLocked(ctx) +} +// Preconditions: +// * filesystem.renameMu must be locked. +// * d.dirMu must be locked. +// * d.isDir(). +func (d *dentry) getDirentsLocked(ctx context.Context) ([]vfs.Dirent, error) { if d.dirents != nil { return d.dirents, nil } diff --git a/pkg/sentry/fsimpl/overlay/filesystem.go b/pkg/sentry/fsimpl/overlay/filesystem.go index b530851c5..e9ce4bde1 100644 --- a/pkg/sentry/fsimpl/overlay/filesystem.go +++ b/pkg/sentry/fsimpl/overlay/filesystem.go @@ -15,6 +15,7 @@ package overlay import ( + "fmt" "strings" "sync/atomic" @@ -512,7 +513,7 @@ func (fs *filesystem) createWhiteout(ctx context.Context, vfsObj *vfs.VirtualFil func (fs *filesystem) cleanupRecreateWhiteout(ctx context.Context, vfsObj *vfs.VirtualFilesystem, pop *vfs.PathOperation) { if err := fs.createWhiteout(ctx, vfsObj, pop); err != nil { - ctx.Warningf("Unrecoverable overlayfs inconsistency: failed to recreate whiteout after failed file creation: %v", err) + panic(fmt.Sprintf("unrecoverable overlayfs inconsistency: failed to recreate whiteout after failed file creation: %v", err)) } } @@ -624,7 +625,7 @@ func (fs *filesystem) LinkAt(ctx context.Context, rp *vfs.ResolvingPath, vd vfs. }, }); err != nil { if cleanupErr := vfsObj.UnlinkAt(ctx, fs.creds, &newpop); cleanupErr != nil { - ctx.Warningf("Unrecoverable overlayfs inconsistency: failed to delete upper layer file after LinkAt metadata update failure: %v", cleanupErr) + panic(fmt.Sprintf("unrecoverable overlayfs inconsistency: failed to delete upper layer file after LinkAt metadata update failure: %v", cleanupErr)) } else if haveUpperWhiteout { fs.cleanupRecreateWhiteout(ctx, vfsObj, &newpop) } @@ -663,7 +664,7 @@ func (fs *filesystem) MkdirAt(ctx context.Context, rp *vfs.ResolvingPath, opts v }, }); err != nil { if cleanupErr := vfsObj.RmdirAt(ctx, fs.creds, &pop); cleanupErr != nil { - ctx.Warningf("Unrecoverable overlayfs inconsistency: failed to delete upper layer directory after MkdirAt metadata update failure: %v", cleanupErr) + panic(fmt.Sprintf("unrecoverable overlayfs inconsistency: failed to delete upper layer directory after MkdirAt metadata update failure: %v", cleanupErr)) } else if haveUpperWhiteout { fs.cleanupRecreateWhiteout(ctx, vfsObj, &pop) } @@ -678,7 +679,7 @@ func (fs *filesystem) MkdirAt(ctx context.Context, rp *vfs.ResolvingPath, opts v Value: "y", }); err != nil { if cleanupErr := vfsObj.RmdirAt(ctx, fs.creds, &pop); cleanupErr != nil { - ctx.Warningf("Unrecoverable overlayfs inconsistency: failed to delete upper layer directory after MkdirAt set-opaque failure: %v", cleanupErr) + panic(fmt.Sprintf("unrecoverable overlayfs inconsistency: failed to delete upper layer directory after MkdirAt set-opaque failure: %v", cleanupErr)) } else { fs.cleanupRecreateWhiteout(ctx, vfsObj, &pop) } @@ -722,7 +723,7 @@ func (fs *filesystem) MknodAt(ctx context.Context, rp *vfs.ResolvingPath, opts v }, }); err != nil { if cleanupErr := vfsObj.UnlinkAt(ctx, fs.creds, &pop); cleanupErr != nil { - ctx.Warningf("Unrecoverable overlayfs inconsistency: failed to delete upper layer file after MknodAt metadata update failure: %v", cleanupErr) + panic(fmt.Sprintf("unrecoverable overlayfs inconsistency: failed to delete upper layer file after MknodAt metadata update failure: %v", cleanupErr)) } else if haveUpperWhiteout { fs.cleanupRecreateWhiteout(ctx, vfsObj, &pop) } @@ -942,7 +943,7 @@ func (fs *filesystem) createAndOpenLocked(ctx context.Context, rp *vfs.Resolving }, }); err != nil { if cleanupErr := vfsObj.UnlinkAt(ctx, fs.creds, &pop); cleanupErr != nil { - ctx.Warningf("Unrecoverable overlayfs inconsistency: failed to delete upper layer file after OpenAt(O_CREAT) metadata update failure: %v", cleanupErr) + panic(fmt.Sprintf("unrecoverable overlayfs inconsistency: failed to delete upper layer file after OpenAt(O_CREAT) metadata update failure: %v", cleanupErr)) } else if haveUpperWhiteout { fs.cleanupRecreateWhiteout(ctx, vfsObj, &pop) } @@ -953,7 +954,7 @@ func (fs *filesystem) createAndOpenLocked(ctx context.Context, rp *vfs.Resolving child, err := fs.getChildLocked(ctx, parent, childName, ds) if err != nil { if cleanupErr := vfsObj.UnlinkAt(ctx, fs.creds, &pop); cleanupErr != nil { - ctx.Warningf("Unrecoverable overlayfs inconsistency: failed to delete upper layer file after OpenAt(O_CREAT) dentry lookup failure: %v", cleanupErr) + panic(fmt.Sprintf("unrecoverable overlayfs inconsistency: failed to delete upper layer file after OpenAt(O_CREAT) dentry lookup failure: %v", cleanupErr)) } else if haveUpperWhiteout { fs.cleanupRecreateWhiteout(ctx, vfsObj, &pop) } @@ -1019,9 +1020,223 @@ func (fs *filesystem) RenameAt(ctx context.Context, rp *vfs.ResolvingPath, oldPa } defer mnt.EndWrite() - // FIXME(gvisor.dev/issue/1199): Actually implement rename. - _ = newParent - return syserror.EXDEV + oldParent := oldParentVD.Dentry().Impl().(*dentry) + creds := rp.Credentials() + if err := oldParent.checkPermissions(creds, vfs.MayWrite|vfs.MayExec); err != nil { + return err + } + // We need a dentry representing the renamed file since, if it's a + // directory, we need to check for write permission on it. + oldParent.dirMu.Lock() + defer oldParent.dirMu.Unlock() + renamed, err := fs.getChildLocked(ctx, oldParent, oldName, &ds) + if err != nil { + return err + } + if err := vfs.CheckDeleteSticky(creds, linux.FileMode(atomic.LoadUint32(&oldParent.mode)), auth.KUID(atomic.LoadUint32(&renamed.uid))); err != nil { + return err + } + if renamed.isDir() { + if renamed == newParent || genericIsAncestorDentry(renamed, newParent) { + return syserror.EINVAL + } + if oldParent != newParent { + if err := renamed.checkPermissions(creds, vfs.MayWrite); err != nil { + return err + } + } + } else { + if opts.MustBeDir || rp.MustBeDir() { + return syserror.ENOTDIR + } + } + + if oldParent != newParent { + if err := newParent.checkPermissions(creds, vfs.MayWrite|vfs.MayExec); err != nil { + return err + } + newParent.dirMu.Lock() + defer newParent.dirMu.Unlock() + } + if newParent.vfsd.IsDead() { + return syserror.ENOENT + } + replacedLayer, err := fs.lookupLayerLocked(ctx, newParent, newName) + if err != nil { + return err + } + var ( + replaced *dentry + replacedVFSD *vfs.Dentry + whiteouts map[string]bool + ) + if replacedLayer.existsInOverlay() { + replaced, err = fs.getChildLocked(ctx, newParent, newName, &ds) + if err != nil { + return err + } + replacedVFSD = &replaced.vfsd + if replaced.isDir() { + if !renamed.isDir() { + return syserror.EISDIR + } + if genericIsAncestorDentry(replaced, renamed) { + return syserror.ENOTEMPTY + } + replaced.dirMu.Lock() + defer replaced.dirMu.Unlock() + whiteouts, err = replaced.collectWhiteoutsForRmdirLocked(ctx) + if err != nil { + return err + } + } else { + if rp.MustBeDir() || renamed.isDir() { + return syserror.ENOTDIR + } + } + } + + if oldParent == newParent && oldName == newName { + return nil + } + + // renamed and oldParent need to be copied-up before they're renamed on the + // upper layer. + if err := renamed.copyUpLocked(ctx); err != nil { + return err + } + // If renamed is a directory, all of its descendants need to be copied-up + // before they're renamed on the upper layer. + if renamed.isDir() { + if err := renamed.copyUpDescendantsLocked(ctx, &ds); err != nil { + return err + } + } + // newParent must be copied-up before it can contain renamed on the upper + // layer. + if err := newParent.copyUpLocked(ctx); err != nil { + return err + } + // If replaced exists, it doesn't need to be copied-up, but we do need to + // serialize with copy-up. Holding renameMu for writing should be + // sufficient, but out of an abundance of caution... + if replaced != nil { + replaced.copyMu.RLock() + defer replaced.copyMu.RUnlock() + } + + vfsObj := rp.VirtualFilesystem() + mntns := vfs.MountNamespaceFromContext(ctx) + defer mntns.DecRef(ctx) + if err := vfsObj.PrepareRenameDentry(mntns, &renamed.vfsd, replacedVFSD); err != nil { + return err + } + + newpop := vfs.PathOperation{ + Root: newParent.upperVD, + Start: newParent.upperVD, + Path: fspath.Parse(newName), + } + + needRecreateWhiteouts := false + cleanupRecreateWhiteouts := func() { + if !needRecreateWhiteouts { + return + } + for whiteoutName, whiteoutUpper := range whiteouts { + if !whiteoutUpper { + continue + } + if err := fs.createWhiteout(ctx, vfsObj, &vfs.PathOperation{ + Root: replaced.upperVD, + Start: replaced.upperVD, + Path: fspath.Parse(whiteoutName), + }); err != nil && err != syserror.EEXIST { + panic(fmt.Sprintf("unrecoverable overlayfs inconsistency: failed to recreate deleted whiteout after RenameAt failure: %v", err)) + } + } + } + if renamed.isDir() { + if replacedLayer == lookupLayerUpper { + // Remove whiteouts from the directory being replaced. + needRecreateWhiteouts = true + for whiteoutName, whiteoutUpper := range whiteouts { + if !whiteoutUpper { + continue + } + if err := vfsObj.UnlinkAt(ctx, fs.creds, &vfs.PathOperation{ + Root: replaced.upperVD, + Start: replaced.upperVD, + Path: fspath.Parse(whiteoutName), + }); err != nil { + cleanupRecreateWhiteouts() + vfsObj.AbortRenameDentry(&renamed.vfsd, replacedVFSD) + return err + } + } + } else if replacedLayer == lookupLayerUpperWhiteout { + // We need to explicitly remove the whiteout since otherwise rename + // on the upper layer will fail with ENOTDIR. + if err := vfsObj.UnlinkAt(ctx, fs.creds, &newpop); err != nil { + vfsObj.AbortRenameDentry(&renamed.vfsd, replacedVFSD) + return err + } + } + } + + // Essentially no gVisor filesystem supports RENAME_WHITEOUT, so just do a + // regular rename and create the whiteout at the origin manually. Unlike + // RENAME_WHITEOUT, this isn't atomic with respect to other users of the + // upper filesystem, but this is already the case for virtually all other + // overlay filesystem operations too. + oldpop := vfs.PathOperation{ + Root: oldParent.upperVD, + Start: oldParent.upperVD, + Path: fspath.Parse(oldName), + } + if err := vfsObj.RenameAt(ctx, creds, &oldpop, &newpop, &opts); err != nil { + cleanupRecreateWhiteouts() + vfsObj.AbortRenameDentry(&renamed.vfsd, replacedVFSD) + return err + } + + // Below this point, the renamed dentry is now at newpop, and anything we + // replaced is gone forever. Commit the rename, update the overlay + // filesystem tree, and abandon attempts to recover from errors. + vfsObj.CommitRenameReplaceDentry(ctx, &renamed.vfsd, replacedVFSD) + delete(oldParent.children, oldName) + if replaced != nil { + ds = appendDentry(ds, replaced) + } + if oldParent != newParent { + newParent.dirents = nil + // This can't drop the last reference on oldParent because one is held + // by oldParentVD, so lock recursion is impossible. + oldParent.DecRef(ctx) + ds = appendDentry(ds, oldParent) + newParent.IncRef() + renamed.parent = newParent + } + renamed.name = newName + if newParent.children == nil { + newParent.children = make(map[string]*dentry) + } + newParent.children[newName] = renamed + oldParent.dirents = nil + + if err := fs.createWhiteout(ctx, vfsObj, &oldpop); err != nil { + panic(fmt.Sprintf("unrecoverable overlayfs inconsistency: failed to create whiteout at origin after RenameAt: %v", err)) + } + if renamed.isDir() { + if err := vfsObj.SetXattrAt(ctx, fs.creds, &newpop, &vfs.SetXattrOptions{ + Name: _OVL_XATTR_OPAQUE, + Value: "y", + }); err != nil { + panic(fmt.Sprintf("unrecoverable overlayfs inconsistency: failed to make renamed directory opaque: %v", err)) + } + } + + return nil } // RmdirAt implements vfs.FilesystemImpl.RmdirAt. @@ -1100,7 +1315,7 @@ func (fs *filesystem) RmdirAt(ctx context.Context, rp *vfs.ResolvingPath) error Start: child.upperVD, Path: fspath.Parse(whiteoutName), }); err != nil && err != syserror.EEXIST { - ctx.Warningf("Unrecoverable overlayfs inconsistency: failed to recreate deleted whiteout after RmdirAt failure: %v", err) + panic(fmt.Sprintf("unrecoverable overlayfs inconsistency: failed to recreate deleted whiteout after RmdirAt failure: %v", err)) } } } @@ -1130,9 +1345,7 @@ func (fs *filesystem) RmdirAt(ctx context.Context, rp *vfs.ResolvingPath) error // Don't attempt to recover from this: the original directory is // already gone, so any dentries representing it are invalid, and // creating a new directory won't undo that. - ctx.Warningf("Unrecoverable overlayfs inconsistency: failed to create whiteout during RmdirAt: %v", err) - vfsObj.AbortDeleteDentry(&child.vfsd) - return err + panic(fmt.Sprintf("unrecoverable overlayfs inconsistency: failed to create whiteout during RmdirAt: %v", err)) } vfsObj.CommitDeleteDentry(ctx, &child.vfsd) @@ -1246,7 +1459,7 @@ func (fs *filesystem) SymlinkAt(ctx context.Context, rp *vfs.ResolvingPath, targ }, }); err != nil { if cleanupErr := vfsObj.UnlinkAt(ctx, fs.creds, &pop); cleanupErr != nil { - ctx.Warningf("Unrecoverable overlayfs inconsistency: failed to delete upper layer file after SymlinkAt metadata update failure: %v", cleanupErr) + panic(fmt.Sprintf("unrecoverable overlayfs inconsistency: failed to delete upper layer file after SymlinkAt metadata update failure: %v", cleanupErr)) } else if haveUpperWhiteout { fs.cleanupRecreateWhiteout(ctx, vfsObj, &pop) } @@ -1339,11 +1552,7 @@ func (fs *filesystem) UnlinkAt(ctx context.Context, rp *vfs.ResolvingPath) error } } if err := fs.createWhiteout(ctx, vfsObj, &pop); err != nil { - ctx.Warningf("Unrecoverable overlayfs inconsistency: failed to create whiteout during UnlinkAt: %v", err) - if child != nil { - vfsObj.AbortDeleteDentry(&child.vfsd) - } - return err + panic(fmt.Sprintf("unrecoverable overlayfs inconsistency: failed to create whiteout during UnlinkAt: %v", err)) } if child != nil { diff --git a/pkg/sentry/fsimpl/overlay/overlay.go b/pkg/sentry/fsimpl/overlay/overlay.go index b2efe5f80..d0d26185e 100644 --- a/pkg/sentry/fsimpl/overlay/overlay.go +++ b/pkg/sentry/fsimpl/overlay/overlay.go @@ -111,16 +111,16 @@ func (fstype FilesystemType) GetFilesystem(ctx context.Context, vfsObj *vfs.Virt fsoptsRaw := opts.InternalData fsopts, haveFSOpts := fsoptsRaw.(FilesystemOptions) if fsoptsRaw != nil && !haveFSOpts { - ctx.Warningf("overlay.FilesystemType.GetFilesystem: GetFilesystemOptions.InternalData has type %T, wanted overlay.FilesystemOptions or nil", fsoptsRaw) + ctx.Infof("overlay.FilesystemType.GetFilesystem: GetFilesystemOptions.InternalData has type %T, wanted overlay.FilesystemOptions or nil", fsoptsRaw) return nil, nil, syserror.EINVAL } if haveFSOpts { if len(fsopts.LowerRoots) == 0 { - ctx.Warningf("overlay.FilesystemType.GetFilesystem: LowerRoots must be non-empty") + ctx.Infof("overlay.FilesystemType.GetFilesystem: LowerRoots must be non-empty") return nil, nil, syserror.EINVAL } if len(fsopts.LowerRoots) < 2 && !fsopts.UpperRoot.Ok() { - ctx.Warningf("overlay.FilesystemType.GetFilesystem: at least two LowerRoots are required when UpperRoot is unspecified") + ctx.Infof("overlay.FilesystemType.GetFilesystem: at least two LowerRoots are required when UpperRoot is unspecified") return nil, nil, syserror.EINVAL } // We don't enforce a maximum number of lower layers when not @@ -137,7 +137,7 @@ func (fstype FilesystemType) GetFilesystem(ctx context.Context, vfsObj *vfs.Virt delete(mopts, "workdir") upperPath := fspath.Parse(upperPathname) if !upperPath.Absolute { - ctx.Warningf("overlay.FilesystemType.GetFilesystem: upperdir %q must be absolute", upperPathname) + ctx.Infof("overlay.FilesystemType.GetFilesystem: upperdir %q must be absolute", upperPathname) return nil, nil, syserror.EINVAL } upperRoot, err := vfsObj.GetDentryAt(ctx, creds, &vfs.PathOperation{ @@ -149,13 +149,13 @@ func (fstype FilesystemType) GetFilesystem(ctx context.Context, vfsObj *vfs.Virt CheckSearchable: true, }) if err != nil { - ctx.Warningf("overlay.FilesystemType.GetFilesystem: failed to resolve upperdir %q: %v", upperPathname, err) + ctx.Infof("overlay.FilesystemType.GetFilesystem: failed to resolve upperdir %q: %v", upperPathname, err) return nil, nil, err } defer upperRoot.DecRef(ctx) privateUpperRoot, err := clonePrivateMount(vfsObj, upperRoot, false /* forceReadOnly */) if err != nil { - ctx.Warningf("overlay.FilesystemType.GetFilesystem: failed to make private bind mount of upperdir %q: %v", upperPathname, err) + ctx.Infof("overlay.FilesystemType.GetFilesystem: failed to make private bind mount of upperdir %q: %v", upperPathname, err) return nil, nil, err } defer privateUpperRoot.DecRef(ctx) @@ -163,24 +163,24 @@ func (fstype FilesystemType) GetFilesystem(ctx context.Context, vfsObj *vfs.Virt } lowerPathnamesStr, ok := mopts["lowerdir"] if !ok { - ctx.Warningf("overlay.FilesystemType.GetFilesystem: missing required option lowerdir") + ctx.Infof("overlay.FilesystemType.GetFilesystem: missing required option lowerdir") return nil, nil, syserror.EINVAL } delete(mopts, "lowerdir") lowerPathnames := strings.Split(lowerPathnamesStr, ":") const maxLowerLayers = 500 // Linux: fs/overlay/super.c:OVL_MAX_STACK if len(lowerPathnames) < 2 && !fsopts.UpperRoot.Ok() { - ctx.Warningf("overlay.FilesystemType.GetFilesystem: at least two lowerdirs are required when upperdir is unspecified") + ctx.Infof("overlay.FilesystemType.GetFilesystem: at least two lowerdirs are required when upperdir is unspecified") return nil, nil, syserror.EINVAL } if len(lowerPathnames) > maxLowerLayers { - ctx.Warningf("overlay.FilesystemType.GetFilesystem: %d lowerdirs specified, maximum %d", len(lowerPathnames), maxLowerLayers) + ctx.Infof("overlay.FilesystemType.GetFilesystem: %d lowerdirs specified, maximum %d", len(lowerPathnames), maxLowerLayers) return nil, nil, syserror.EINVAL } for _, lowerPathname := range lowerPathnames { lowerPath := fspath.Parse(lowerPathname) if !lowerPath.Absolute { - ctx.Warningf("overlay.FilesystemType.GetFilesystem: lowerdir %q must be absolute", lowerPathname) + ctx.Infof("overlay.FilesystemType.GetFilesystem: lowerdir %q must be absolute", lowerPathname) return nil, nil, syserror.EINVAL } lowerRoot, err := vfsObj.GetDentryAt(ctx, creds, &vfs.PathOperation{ @@ -192,13 +192,13 @@ func (fstype FilesystemType) GetFilesystem(ctx context.Context, vfsObj *vfs.Virt CheckSearchable: true, }) if err != nil { - ctx.Warningf("overlay.FilesystemType.GetFilesystem: failed to resolve lowerdir %q: %v", lowerPathname, err) + ctx.Infof("overlay.FilesystemType.GetFilesystem: failed to resolve lowerdir %q: %v", lowerPathname, err) return nil, nil, err } defer lowerRoot.DecRef(ctx) privateLowerRoot, err := clonePrivateMount(vfsObj, lowerRoot, true /* forceReadOnly */) if err != nil { - ctx.Warningf("overlay.FilesystemType.GetFilesystem: failed to make private bind mount of lowerdir %q: %v", lowerPathname, err) + ctx.Infof("overlay.FilesystemType.GetFilesystem: failed to make private bind mount of lowerdir %q: %v", lowerPathname, err) return nil, nil, err } defer privateLowerRoot.DecRef(ctx) @@ -206,7 +206,7 @@ func (fstype FilesystemType) GetFilesystem(ctx context.Context, vfsObj *vfs.Virt } } if len(mopts) != 0 { - ctx.Warningf("overlay.FilesystemType.GetFilesystem: unused options: %v", mopts) + ctx.Infof("overlay.FilesystemType.GetFilesystem: unused options: %v", mopts) return nil, nil, syserror.EINVAL } @@ -279,7 +279,7 @@ func (fstype FilesystemType) GetFilesystem(ctx context.Context, vfsObj *vfs.Virt return nil, nil, syserror.EREMOTE } if isWhiteout(&rootStat) { - ctx.Warningf("overlay.FilesystemType.GetFilesystem: filesystem root is a whiteout") + ctx.Infof("overlay.FilesystemType.GetFilesystem: filesystem root is a whiteout") root.destroyLocked(ctx) fs.vfsfs.DecRef(ctx) return nil, nil, syserror.EINVAL diff --git a/pkg/sentry/fsimpl/proc/fd_dir_inode_refs.go b/pkg/sentry/fsimpl/proc/fd_dir_inode_refs.go index 84c03e6cd..467c32752 100644 --- a/pkg/sentry/fsimpl/proc/fd_dir_inode_refs.go +++ b/pkg/sentry/fsimpl/proc/fd_dir_inode_refs.go @@ -1,12 +1,11 @@ package proc import ( - "sync/atomic" - "fmt" "gvisor.dev/gvisor/pkg/log" refs_vfs1 "gvisor.dev/gvisor/pkg/refs" "runtime" + "sync/atomic" ) // ownerType is used to customize logging. Note that we use a pointer to T so diff --git a/pkg/sentry/fsimpl/proc/fd_info_dir_inode_refs.go b/pkg/sentry/fsimpl/proc/fd_info_dir_inode_refs.go index 5b3c7cd1c..3fcda0948 100644 --- a/pkg/sentry/fsimpl/proc/fd_info_dir_inode_refs.go +++ b/pkg/sentry/fsimpl/proc/fd_info_dir_inode_refs.go @@ -1,12 +1,11 @@ package proc import ( - "sync/atomic" - "fmt" "gvisor.dev/gvisor/pkg/log" refs_vfs1 "gvisor.dev/gvisor/pkg/refs" "runtime" + "sync/atomic" ) // ownerType is used to customize logging. Note that we use a pointer to T so diff --git a/pkg/sentry/fsimpl/proc/subtasks_inode_refs.go b/pkg/sentry/fsimpl/proc/subtasks_inode_refs.go index 3091deb89..2da6801c2 100644 --- a/pkg/sentry/fsimpl/proc/subtasks_inode_refs.go +++ b/pkg/sentry/fsimpl/proc/subtasks_inode_refs.go @@ -1,12 +1,11 @@ package proc import ( - "sync/atomic" - "fmt" "gvisor.dev/gvisor/pkg/log" refs_vfs1 "gvisor.dev/gvisor/pkg/refs" "runtime" + "sync/atomic" ) // ownerType is used to customize logging. Note that we use a pointer to T so diff --git a/pkg/sentry/fsimpl/proc/task_inode_refs.go b/pkg/sentry/fsimpl/proc/task_inode_refs.go index 5833527c5..b6e19844c 100644 --- a/pkg/sentry/fsimpl/proc/task_inode_refs.go +++ b/pkg/sentry/fsimpl/proc/task_inode_refs.go @@ -1,12 +1,11 @@ package proc import ( - "sync/atomic" - "fmt" "gvisor.dev/gvisor/pkg/log" refs_vfs1 "gvisor.dev/gvisor/pkg/refs" "runtime" + "sync/atomic" ) // ownerType is used to customize logging. Note that we use a pointer to T so diff --git a/pkg/sentry/fsimpl/proc/tasks_inode_refs.go b/pkg/sentry/fsimpl/proc/tasks_inode_refs.go index 0961dd629..6207364e4 100644 --- a/pkg/sentry/fsimpl/proc/tasks_inode_refs.go +++ b/pkg/sentry/fsimpl/proc/tasks_inode_refs.go @@ -1,12 +1,11 @@ package proc import ( - "sync/atomic" - "fmt" "gvisor.dev/gvisor/pkg/log" refs_vfs1 "gvisor.dev/gvisor/pkg/refs" "runtime" + "sync/atomic" ) // ownerType is used to customize logging. Note that we use a pointer to T so diff --git a/pkg/sentry/fsimpl/sys/dir_refs.go b/pkg/sentry/fsimpl/sys/dir_refs.go index 718d542eb..9d15d4c80 100644 --- a/pkg/sentry/fsimpl/sys/dir_refs.go +++ b/pkg/sentry/fsimpl/sys/dir_refs.go @@ -1,12 +1,11 @@ package sys import ( - "sync/atomic" - "fmt" "gvisor.dev/gvisor/pkg/log" refs_vfs1 "gvisor.dev/gvisor/pkg/refs" "runtime" + "sync/atomic" ) // ownerType is used to customize logging. Note that we use a pointer to T so diff --git a/pkg/sentry/fsimpl/tmpfs/inode_refs.go b/pkg/sentry/fsimpl/tmpfs/inode_refs.go index 5ec208d9e..ff5e99c52 100644 --- a/pkg/sentry/fsimpl/tmpfs/inode_refs.go +++ b/pkg/sentry/fsimpl/tmpfs/inode_refs.go @@ -1,12 +1,11 @@ package tmpfs import ( - "sync/atomic" - "fmt" "gvisor.dev/gvisor/pkg/log" refs_vfs1 "gvisor.dev/gvisor/pkg/refs" "runtime" + "sync/atomic" ) // ownerType is used to customize logging. Note that we use a pointer to T so diff --git a/pkg/sentry/kernel/fd_table_refs.go b/pkg/sentry/kernel/fd_table_refs.go index 9330e37e4..a630289c9 100644 --- a/pkg/sentry/kernel/fd_table_refs.go +++ b/pkg/sentry/kernel/fd_table_refs.go @@ -1,12 +1,11 @@ package kernel import ( - "sync/atomic" - "fmt" "gvisor.dev/gvisor/pkg/log" refs_vfs1 "gvisor.dev/gvisor/pkg/refs" "runtime" + "sync/atomic" ) // ownerType is used to customize logging. Note that we use a pointer to T so diff --git a/pkg/sentry/kernel/fs_context_refs.go b/pkg/sentry/kernel/fs_context_refs.go index e2280f400..e8bb1e6ee 100644 --- a/pkg/sentry/kernel/fs_context_refs.go +++ b/pkg/sentry/kernel/fs_context_refs.go @@ -1,12 +1,11 @@ package kernel import ( - "sync/atomic" - "fmt" "gvisor.dev/gvisor/pkg/log" refs_vfs1 "gvisor.dev/gvisor/pkg/refs" "runtime" + "sync/atomic" ) // ownerType is used to customize logging. Note that we use a pointer to T so diff --git a/pkg/sentry/kernel/process_group_refs.go b/pkg/sentry/kernel/process_group_refs.go index 832a99d66..4b257d548 100644 --- a/pkg/sentry/kernel/process_group_refs.go +++ b/pkg/sentry/kernel/process_group_refs.go @@ -1,12 +1,11 @@ package kernel import ( - "sync/atomic" - "fmt" "gvisor.dev/gvisor/pkg/log" refs_vfs1 "gvisor.dev/gvisor/pkg/refs" "runtime" + "sync/atomic" ) // ownerType is used to customize logging. Note that we use a pointer to T so diff --git a/pkg/sentry/kernel/session_refs.go b/pkg/sentry/kernel/session_refs.go index 850f56d3a..204fdd060 100644 --- a/pkg/sentry/kernel/session_refs.go +++ b/pkg/sentry/kernel/session_refs.go @@ -1,12 +1,11 @@ package kernel import ( - "sync/atomic" - "fmt" "gvisor.dev/gvisor/pkg/log" refs_vfs1 "gvisor.dev/gvisor/pkg/refs" "runtime" + "sync/atomic" ) // ownerType is used to customize logging. Note that we use a pointer to T so diff --git a/pkg/sentry/kernel/shm/shm_refs.go b/pkg/sentry/kernel/shm/shm_refs.go index 35f74eb6c..4bffdd0b3 100644 --- a/pkg/sentry/kernel/shm/shm_refs.go +++ b/pkg/sentry/kernel/shm/shm_refs.go @@ -1,12 +1,11 @@ package shm import ( - "sync/atomic" - "fmt" "gvisor.dev/gvisor/pkg/log" refs_vfs1 "gvisor.dev/gvisor/pkg/refs" "runtime" + "sync/atomic" ) // ownerType is used to customize logging. Note that we use a pointer to T so diff --git a/pkg/sentry/mm/aio_mappable_refs.go b/pkg/sentry/mm/aio_mappable_refs.go index d4f278400..141747137 100644 --- a/pkg/sentry/mm/aio_mappable_refs.go +++ b/pkg/sentry/mm/aio_mappable_refs.go @@ -1,12 +1,11 @@ package mm import ( - "sync/atomic" - "fmt" "gvisor.dev/gvisor/pkg/log" refs_vfs1 "gvisor.dev/gvisor/pkg/refs" "runtime" + "sync/atomic" ) // ownerType is used to customize logging. Note that we use a pointer to T so diff --git a/pkg/sentry/mm/special_mappable_refs.go b/pkg/sentry/mm/special_mappable_refs.go index 2a348bacf..0921a5d18 100644 --- a/pkg/sentry/mm/special_mappable_refs.go +++ b/pkg/sentry/mm/special_mappable_refs.go @@ -1,12 +1,11 @@ package mm import ( - "sync/atomic" - "fmt" "gvisor.dev/gvisor/pkg/log" refs_vfs1 "gvisor.dev/gvisor/pkg/refs" "runtime" + "sync/atomic" ) // ownerType is used to customize logging. Note that we use a pointer to T so diff --git a/pkg/sentry/platform/ring0/defs_impl_arm64.go b/pkg/sentry/platform/ring0/defs_impl_arm64.go index f567ef868..dbf1ef5cf 100644 --- a/pkg/sentry/platform/ring0/defs_impl_arm64.go +++ b/pkg/sentry/platform/ring0/defs_impl_arm64.go @@ -1,13 +1,13 @@ package ring0 import ( - "gvisor.dev/gvisor/pkg/sentry/platform/ring0/pagetables" - "fmt" "gvisor.dev/gvisor/pkg/sentry/arch" - "gvisor.dev/gvisor/pkg/usermem" + "gvisor.dev/gvisor/pkg/sentry/platform/ring0/pagetables" "io" "reflect" + + "gvisor.dev/gvisor/pkg/usermem" ) // Useful bits. diff --git a/pkg/sentry/socket/unix/socket_refs.go b/pkg/sentry/socket/unix/socket_refs.go index a0e5d1393..39aaedc7f 100644 --- a/pkg/sentry/socket/unix/socket_refs.go +++ b/pkg/sentry/socket/unix/socket_refs.go @@ -1,12 +1,11 @@ package unix import ( - "sync/atomic" - "fmt" "gvisor.dev/gvisor/pkg/log" refs_vfs1 "gvisor.dev/gvisor/pkg/refs" "runtime" + "sync/atomic" ) // ownerType is used to customize logging. Note that we use a pointer to T so diff --git a/pkg/sentry/socket/unix/transport/queue_refs.go b/pkg/sentry/socket/unix/transport/queue_refs.go index 21d43fc24..4c3dcd13f 100644 --- a/pkg/sentry/socket/unix/transport/queue_refs.go +++ b/pkg/sentry/socket/unix/transport/queue_refs.go @@ -1,12 +1,11 @@ package transport import ( - "sync/atomic" - "fmt" "gvisor.dev/gvisor/pkg/log" refs_vfs1 "gvisor.dev/gvisor/pkg/refs" "runtime" + "sync/atomic" ) // ownerType is used to customize logging. Note that we use a pointer to T so diff --git a/pkg/sentry/vfs/file_description_refs.go b/pkg/sentry/vfs/file_description_refs.go index ebc089b4c..6c7747259 100644 --- a/pkg/sentry/vfs/file_description_refs.go +++ b/pkg/sentry/vfs/file_description_refs.go @@ -1,12 +1,11 @@ package vfs import ( - "sync/atomic" - "fmt" "gvisor.dev/gvisor/pkg/log" refs_vfs1 "gvisor.dev/gvisor/pkg/refs" "runtime" + "sync/atomic" ) // ownerType is used to customize logging. Note that we use a pointer to T so diff --git a/pkg/sentry/vfs/filesystem_refs.go b/pkg/sentry/vfs/filesystem_refs.go index 32f21c044..96f681831 100644 --- a/pkg/sentry/vfs/filesystem_refs.go +++ b/pkg/sentry/vfs/filesystem_refs.go @@ -1,12 +1,11 @@ package vfs import ( - "sync/atomic" - "fmt" "gvisor.dev/gvisor/pkg/log" refs_vfs1 "gvisor.dev/gvisor/pkg/refs" "runtime" + "sync/atomic" ) // ownerType is used to customize logging. Note that we use a pointer to T so diff --git a/pkg/sentry/vfs/mount_namespace_refs.go b/pkg/sentry/vfs/mount_namespace_refs.go index 2c920ac41..4c422c81f 100644 --- a/pkg/sentry/vfs/mount_namespace_refs.go +++ b/pkg/sentry/vfs/mount_namespace_refs.go @@ -1,12 +1,11 @@ package vfs import ( - "sync/atomic" - "fmt" "gvisor.dev/gvisor/pkg/log" refs_vfs1 "gvisor.dev/gvisor/pkg/refs" "runtime" + "sync/atomic" ) // ownerType is used to customize logging. Note that we use a pointer to T so diff --git a/pkg/tcpip/link/tun/tun_endpoint_refs.go b/pkg/tcpip/link/tun/tun_endpoint_refs.go index 06d11f0e1..9a38142f5 100644 --- a/pkg/tcpip/link/tun/tun_endpoint_refs.go +++ b/pkg/tcpip/link/tun/tun_endpoint_refs.go @@ -1,12 +1,11 @@ package tun import ( - "sync/atomic" - "fmt" "gvisor.dev/gvisor/pkg/log" refs_vfs1 "gvisor.dev/gvisor/pkg/refs" "runtime" + "sync/atomic" ) // ownerType is used to customize logging. Note that we use a pointer to T so |