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fuse: flatten 'struct fuse_args'

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...to make future expansion simpler.  The hiearachical structure is a
historical thing that does not serve any practical purpose.

The generated code is excatly the same before and after the patch.

Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
This commit is contained in:
Miklos Szeredi
2019-09-10 15:04:08 +02:00
parent 76e43c8cca
commit d5b4854357
6 changed files with 216 additions and 223 deletions
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38
fs/fuse/dev.c
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@@ -590,32 +590,32 @@ EXPORT_SYMBOL_GPL(fuse_request_send);
static void fuse_adjust_compat(struct fuse_conn *fc, struct fuse_args *args)
{
if (fc->minor < 4 && args->in.h.opcode == FUSE_STATFS)
args->out.args[0].size = FUSE_COMPAT_STATFS_SIZE;
if (fc->minor < 4 && args->opcode == FUSE_STATFS)
args->out_args[0].size = FUSE_COMPAT_STATFS_SIZE;
if (fc->minor < 9) {
switch (args->in.h.opcode) {
switch (args->opcode) {
case FUSE_LOOKUP:
case FUSE_CREATE:
case FUSE_MKNOD:
case FUSE_MKDIR:
case FUSE_SYMLINK:
case FUSE_LINK:
args->out.args[0].size = FUSE_COMPAT_ENTRY_OUT_SIZE;
args->out_args[0].size = FUSE_COMPAT_ENTRY_OUT_SIZE;
break;
case FUSE_GETATTR:
case FUSE_SETATTR:
args->out.args[0].size = FUSE_COMPAT_ATTR_OUT_SIZE;
args->out_args[0].size = FUSE_COMPAT_ATTR_OUT_SIZE;
break;
}
}
if (fc->minor < 12) {
switch (args->in.h.opcode) {
switch (args->opcode) {
case FUSE_CREATE:
args->in.args[0].size = sizeof(struct fuse_open_in);
args->in_args[0].size = sizeof(struct fuse_open_in);
break;
case FUSE_MKNOD:
args->in.args[0].size = FUSE_COMPAT_MKNOD_IN_SIZE;
args->in_args[0].size = FUSE_COMPAT_MKNOD_IN_SIZE;
break;
}
}
@@ -633,19 +633,19 @@ ssize_t fuse_simple_request(struct fuse_conn *fc, struct fuse_args *args)
/* Needs to be done after fuse_get_req() so that fc->minor is valid */
fuse_adjust_compat(fc, args);
req->in.h.opcode = args->in.h.opcode;
req->in.h.nodeid = args->in.h.nodeid;
req->in.numargs = args->in.numargs;
memcpy(req->in.args, args->in.args,
args->in.numargs * sizeof(struct fuse_in_arg));
req->out.argvar = args->out.argvar;
req->out.numargs = args->out.numargs;
memcpy(req->out.args, args->out.args,
args->out.numargs * sizeof(struct fuse_arg));
req->in.h.opcode = args->opcode;
req->in.h.nodeid = args->nodeid;
req->in.numargs = args->in_numargs;
memcpy(req->in.args, args->in_args,
args->in_numargs * sizeof(struct fuse_in_arg));
req->out.argvar = args->out_argvar;
req->out.numargs = args->out_numargs;
memcpy(req->out.args, args->out_args,
args->out_numargs * sizeof(struct fuse_arg));
fuse_request_send(fc, req);
ret = req->out.h.error;
if (!ret && args->out.argvar) {
BUG_ON(args->out.numargs != 1);
if (!ret && args->out_argvar) {
BUG_ON(args->out_numargs != 1);
ret = req->out.args[0].size;
}
fuse_put_request(fc, req);