Signed-off-by: Daniel Rosenberg <drosen@xxxxxxxxxx>
Signed-off-by: Paul Lawrence <paullawrence@xxxxxxxxxx>
---
fs/fuse/backing.c | 117 ++++++++++++++++++++++++++++++++++++++++++++++
fs/fuse/dir.c | 8 ++++
fs/fuse/file.c | 17 +++++++
fs/fuse/fuse_i.h | 21 +++++++++
4 files changed, 163 insertions(+)
diff --git a/fs/fuse/backing.c b/fs/fuse/backing.c
index a31199064dc7..4fd7442c94a1 100644
--- a/fs/fuse/backing.c
+++ b/fs/fuse/backing.c
@@ -436,6 +436,49 @@ int fuse_release_finalize(struct bpf_fuse_args *fa, int *out,
return 0;
}
+int fuse_flush_initialize_in(struct bpf_fuse_args *fa, struct fuse_flush_in *ffi,
+ struct file *file, fl_owner_t id)
+{
+ struct fuse_file *fuse_file = file->private_data;
+
+ *ffi = (struct fuse_flush_in) {
+ .fh = fuse_file->fh,
+ };
+
+ *fa = (struct bpf_fuse_args) {
+ .nodeid = get_node_id(file->f_inode),
+ .opcode = FUSE_FLUSH,
+ .in_numargs = 1,
+ .in_args[0].size = sizeof(*ffi),
+ .in_args[0].value = ffi,
+ .flags = FUSE_BPF_FORCE,
+ };
+
+ return 0;
+}
+
+int fuse_flush_initialize_out(struct bpf_fuse_args *fa, struct fuse_flush_in *ffi,
+ struct file *file, fl_owner_t id)
+{
+ return 0;
+}
+
+int fuse_flush_backing(struct bpf_fuse_args *fa, int *out, struct file *file, fl_owner_t id)
+{
+ struct fuse_file *fuse_file = file->private_data;
+ struct file *backing_file = fuse_file->backing_file;
+
+ *out = 0;
+ if (backing_file->f_op->flush)
+ *out = backing_file->f_op->flush(backing_file, id);
+ return *out;
+}
+
+int fuse_flush_finalize(struct bpf_fuse_args *fa, int *out, struct file *file, fl_owner_t id)
+{
+ return 0;
+}
+
int fuse_lseek_initialize_in(struct bpf_fuse_args *fa, struct fuse_lseek_io *flio,
struct file *file, loff_t offset, int whence)
{
@@ -510,6 +553,80 @@ int fuse_lseek_finalize(struct bpf_fuse_args *fa, loff_t *out,
return 0;
}
+int fuse_fsync_initialize_in(struct bpf_fuse_args *fa, struct fuse_fsync_in *ffi,
+ struct file *file, loff_t start, loff_t end, int datasync)
+{
+ struct fuse_file *fuse_file = file->private_data;
+
+ *ffi = (struct fuse_fsync_in) {
+ .fh = fuse_file->fh,
+ .fsync_flags = datasync ? FUSE_FSYNC_FDATASYNC : 0,
+ };
+
+ *fa = (struct bpf_fuse_args) {
+ .nodeid = get_fuse_inode(file->f_inode)->nodeid,
+ .opcode = FUSE_FSYNC,
+ .in_numargs = 1,
+ .in_args[0].size = sizeof(*ffi),
+ .in_args[0].value = ffi,
+ .flags = FUSE_BPF_FORCE,
+ };
+
+ return 0;
+}
+
+int fuse_fsync_initialize_out(struct bpf_fuse_args *fa, struct fuse_fsync_in *ffi,
+ struct file *file, loff_t start, loff_t end, int datasync)
+{
+ return 0;
+}
+
+int fuse_fsync_backing(struct bpf_fuse_args *fa, int *out,
+ struct file *file, loff_t start, loff_t end, int datasync)
+{
+ struct fuse_file *fuse_file = file->private_data;
+ struct file *backing_file = fuse_file->backing_file;
+ const struct fuse_fsync_in *ffi = fa->in_args[0].value;
+ int new_datasync = (ffi->fsync_flags & FUSE_FSYNC_FDATASYNC) ? 1 : 0;
+
+ *out = vfs_fsync(backing_file, new_datasync);
+ return 0;
+}
+
+int fuse_fsync_finalize(struct bpf_fuse_args *fa, int *out,
+ struct file *file, loff_t start, loff_t end, int datasync)
+{
+ return 0;
+}
+
+int fuse_dir_fsync_initialize_in(struct bpf_fuse_args *fa, struct fuse_fsync_in *ffi,
+ struct file *file, loff_t start, loff_t end, int datasync)
+{
+ struct fuse_file *fuse_file = file->private_data;
+
+ *ffi = (struct fuse_fsync_in) {
+ .fh = fuse_file->fh,
+ .fsync_flags = datasync ? FUSE_FSYNC_FDATASYNC : 0,
+ };
+
+ *fa = (struct bpf_fuse_args) {
+ .nodeid = get_fuse_inode(file->f_inode)->nodeid,
+ .opcode = FUSE_FSYNCDIR,
+ .in_numargs = 1,
+ .in_args[0].size = sizeof(*ffi),
+ .in_args[0].value = ffi,
+ .flags = FUSE_BPF_FORCE,
+ };
+
+ return 0;
+}
+
+int fuse_dir_fsync_initialize_out(struct bpf_fuse_args *fa, struct fuse_fsync_in *ffi,
+ struct file *file, loff_t start, loff_t end, int datasync)
+{
+ return 0;
+}
+
static inline void fuse_bpf_aio_put(struct fuse_bpf_aio_req *aio_req)
{
if (refcount_dec_and_test(&aio_req->ref))
diff --git a/fs/fuse/dir.c b/fs/fuse/dir.c
index d8237b7a23f2..f159b9a6d305 100644
--- a/fs/fuse/dir.c
+++ b/fs/fuse/dir.c
@@ -1638,6 +1638,14 @@ static int fuse_dir_fsync(struct file *file, loff_t start, loff_t end,
if (fuse_is_bad(inode))
return -EIO;
+#ifdef CONFIG_FUSE_BPF
+ if (fuse_bpf_backing(inode, struct fuse_fsync_in, err,
+ fuse_dir_fsync_initialize_in, fuse_dir_fsync_initialize_out,
+ fuse_fsync_backing, fuse_fsync_finalize,
+ file, start, end, datasync))
+ return err;
+#endif
+
if (fc->no_fsyncdir)
return 0;
diff --git a/fs/fuse/file.c b/fs/fuse/file.c
index 443f1af8a431..fc8f8e3a06b3 100644
--- a/fs/fuse/file.c
+++ b/fs/fuse/file.c
@@ -513,6 +513,15 @@ static int fuse_flush(struct file *file, fl_owner_t id)
FUSE_ARGS(args);
int err;
+#ifdef CONFIG_FUSE_BPF
+ if (fuse_bpf_backing(file->f_inode, struct fuse_flush_in, err,
+ fuse_flush_initialize_in, fuse_flush_initialize_out,
+ fuse_flush_backing,
+ fuse_flush_finalize,
+ file, id))
+ return err;
+#endif
+
if (fuse_is_bad(inode))
return -EIO;
@@ -588,6 +597,14 @@ static int fuse_fsync(struct file *file, loff_t start, loff_t end,
struct fuse_conn *fc = get_fuse_conn(inode);
int err;
+#ifdef CONFIG_FUSE_BPF
+ if (fuse_bpf_backing(inode, struct fuse_fsync_in, err,
+ fuse_fsync_initialize_in, fuse_fsync_initialize_out,
+ fuse_fsync_backing, fuse_fsync_finalize,
+ file, start, end, datasync))
+ return err;
+#endif
+
if (fuse_is_bad(inode))
return -EIO;
diff --git a/fs/fuse/fuse_i.h b/fs/fuse/fuse_i.h
index 8780a50be244..db769dd0a2e4 100644
--- a/fs/fuse/fuse_i.h
+++ b/fs/fuse/fuse_i.h
@@ -1489,6 +1489,14 @@ int fuse_release_backing(struct bpf_fuse_args *fa, int *out,
int fuse_release_finalize(struct bpf_fuse_args *fa, int *out,
struct inode *inode, struct file *file);
+int fuse_flush_initialize_in(struct bpf_fuse_args *fa, struct fuse_flush_in *ffi,
+ struct file *file, fl_owner_t id);
+int fuse_flush_initialize_out(struct bpf_fuse_args *fa, struct fuse_flush_in *ffi,
+ struct file *file, fl_owner_t id);
+int fuse_flush_backing(struct bpf_fuse_args *fa, int *out, struct file *file, fl_owner_t id);
+int fuse_flush_finalize(struct bpf_fuse_args *fa, int *out,
+ struct file *file, fl_owner_t id);
+
struct fuse_lseek_io {
struct fuse_lseek_in fli;
struct fuse_lseek_out flo;
@@ -1503,6 +1511,19 @@ int fuse_lseek_backing(struct bpf_fuse_args *fa, loff_t *out, struct file *file,
int fuse_lseek_finalize(struct bpf_fuse_args *fa, loff_t *out, struct file *file,
loff_t offset, int whence);
+int fuse_fsync_initialize_in(struct bpf_fuse_args *fa, struct fuse_fsync_in *ffi,
+ struct file *file, loff_t start, loff_t end, int datasync);
+int fuse_fsync_initialize_out(struct bpf_fuse_args *fa, struct fuse_fsync_in *ffi,
+ struct file *file, loff_t start, loff_t end, int datasync);
+int fuse_fsync_backing(struct bpf_fuse_args *fa, int *out,
+ struct file *file, loff_t start, loff_t end, int datasync);
+int fuse_fsync_finalize(struct bpf_fuse_args *fa, int *out,
+ struct file *file, loff_t start, loff_t end, int datasync);
+int fuse_dir_fsync_initialize_in(struct bpf_fuse_args *fa, struct fuse_fsync_in *ffi,
+ struct file *file, loff_t start, loff_t end, int datasync);
+int fuse_dir_fsync_initialize_out(struct bpf_fuse_args *fa, struct fuse_fsync_in *ffi,
+ struct file *file, loff_t start, loff_t end, int datasync);
+
struct fuse_read_iter_out {
uint64_t ret;
};
--
2.37.3.998.g577e59143f-goog
