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| author | Craig Chi <craigchi@google.com> | 2020-09-03 14:06:59 -0700 |
|---|---|---|
| committer | Andrei Vagin <avagin@gmail.com> | 2020-09-16 12:19:30 -0700 |
| commit | 18f1e1c91b05059c333197a2a6198716c12508e7 (patch) | |
| tree | 793ba2059e2facf5f7d9408713103f34db948560 /pkg/sentry | |
| parent | 7ed4e46a717ece014a962e4b9cacff1ff4c461f1 (diff) | |
Implement FUSE_CREATE
FUSE_CREATE is called when issuing creat(2) or open(2) with O_CREAT. It
creates a new file on the FUSE filesystem.
Fixes #3825
Diffstat (limited to 'pkg/sentry')
| -rw-r--r-- | pkg/sentry/fsimpl/fuse/fusefs.go | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/pkg/sentry/fsimpl/fuse/fusefs.go b/pkg/sentry/fsimpl/fuse/fusefs.go index e1bbb4b52..cfae9ed0d 100644 --- a/pkg/sentry/fsimpl/fuse/fusefs.go +++ b/pkg/sentry/fsimpl/fuse/fusefs.go @@ -392,6 +392,24 @@ func (inode) Valid(ctx context.Context) bool { return true } +// NewFile implements kernfs.Inode.NewFile. +func (i *inode) NewFile(ctx context.Context, name string, opts vfs.OpenOptions) (*vfs.Dentry, error) { + kernelTask := kernel.TaskFromContext(ctx) + if kernelTask == nil { + log.Warningf("fusefs.Inode.NewFile: couldn't get kernel task from context", i.NodeID) + return nil, syserror.EINVAL + } + in := linux.FUSECreateIn{ + CreateMeta: linux.FUSECreateMeta{ + Flags: opts.Flags, + Mode: uint32(opts.Mode) | linux.S_IFREG, + Umask: uint32(kernelTask.FSContext().Umask()), + }, + Name: name, + } + return i.newEntry(ctx, name, linux.S_IFREG, linux.FUSE_CREATE, &in) +} + // NewNode implements kernfs.Inode.NewNode. func (i *inode) NewNode(ctx context.Context, name string, opts vfs.MknodOptions) (*vfs.Dentry, error) { in := linux.FUSEMknodIn{ |