From fe4f9428fc403fa8b99051f52d84ea5bd13f3855 Mon Sep 17 00:00:00 2001 From: Niels de Vos Date: Mon, 18 Jun 2018 19:31:43 +0200 Subject: libfuse: add copy_file_range() support Add support for the relatively new copy_file_range() syscall. Backend filesystems can now implement an efficient way of cloning/duplicating data ranges within files. See 'man 2 copy_file_range' for more details. --- lib/fuse_lowlevel.c | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) (limited to 'lib/fuse_lowlevel.c') diff --git a/lib/fuse_lowlevel.c b/lib/fuse_lowlevel.c index 844e797..cd59ec0 100644 --- a/lib/fuse_lowlevel.c +++ b/lib/fuse_lowlevel.c @@ -1810,6 +1810,27 @@ static void do_fallocate(fuse_req_t req, fuse_ino_t nodeid, const void *inarg) fuse_reply_err(req, ENOSYS); } +static void do_copy_file_range(fuse_req_t req, fuse_ino_t nodeid_in, const void *inarg) +{ + struct fuse_copy_file_range_in *arg = (struct fuse_copy_file_range_in *) inarg; + struct fuse_file_info fi_in, fi_out; + + memset(&fi_in, 0, sizeof(fi_in)); + fi_in.fh = arg->fh_in; + + memset(&fi_out, 0, sizeof(fi_out)); + fi_out.fh = arg->fh_out; + + + if (req->se->op.copy_file_range) + req->se->op.copy_file_range(req, nodeid_in, arg->off_in, + &fi_in, arg->nodeid_out, + arg->off_out, &fi_out, arg->len, + arg->flags); + else + fuse_reply_err(req, ENOSYS); +} + static void do_init(fuse_req_t req, fuse_ino_t nodeid, const void *inarg) { struct fuse_init_in *arg = (struct fuse_init_in *) inarg; @@ -2395,6 +2416,7 @@ static struct { [FUSE_BATCH_FORGET] = { do_batch_forget, "BATCH_FORGET" }, [FUSE_READDIRPLUS] = { do_readdirplus, "READDIRPLUS"}, [FUSE_RENAME2] = { do_rename2, "RENAME2" }, + [FUSE_COPY_FILE_RANGE] = { do_copy_file_range, "COPY_FILE_RANGE" }, [CUSE_INIT] = { cuse_lowlevel_init, "CUSE_INIT" }, }; -- cgit v1.2.3