diff options
Diffstat (limited to 'pkg/sentry/fs/proc')
| -rw-r--r-- | pkg/sentry/fs/proc/sys.go | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/pkg/sentry/fs/proc/sys.go b/pkg/sentry/fs/proc/sys.go index b998fb75d..085aa6d61 100644 --- a/pkg/sentry/fs/proc/sys.go +++ b/pkg/sentry/fs/proc/sys.go @@ -77,6 +77,27 @@ func (*overcommitMemory) ReadSeqFileData(ctx context.Context, h seqfile.SeqHandl }, 0 } +// +stateify savable +type maxMapCount struct{} + +// NeedsUpdate implements seqfile.SeqSource. +func (*maxMapCount) NeedsUpdate(int64) bool { + return true +} + +// ReadSeqFileData implements seqfile.SeqSource. +func (*maxMapCount) ReadSeqFileData(ctx context.Context, h seqfile.SeqHandle) ([]seqfile.SeqData, int64) { + if h != nil { + return nil, 0 + } + return []seqfile.SeqData{ + { + Buf: []byte("2147483647\n"), + Handle: (*maxMapCount)(nil), + }, + }, 0 +} + func (p *proc) newKernelDir(ctx context.Context, msrc *fs.MountSource) *fs.Inode { h := hostname{ SimpleFileInode: *fsutil.NewSimpleFileInode(ctx, fs.RootOwner, fs.FilePermsFromMode(0444), linux.PROC_SUPER_MAGIC), @@ -96,6 +117,7 @@ func (p *proc) newKernelDir(ctx context.Context, msrc *fs.MountSource) *fs.Inode func (p *proc) newVMDir(ctx context.Context, msrc *fs.MountSource) *fs.Inode { children := map[string]*fs.Inode{ + "max_map_count": seqfile.NewSeqFileInode(ctx, &maxMapCount{}, msrc), "mmap_min_addr": seqfile.NewSeqFileInode(ctx, &mmapMinAddrData{p.k}, msrc), "overcommit_memory": seqfile.NewSeqFileInode(ctx, &overcommitMemory{}, msrc), } |