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export/fuse: Give SET_ATTR_SIZE its own branch

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In order to support changing other attributes than the file size in
fuse_setattr(), we have to give each its own independent branch.  This
also applies to the only attribute we do support right now.

Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Message-Id: <20210625142317.271673-4-mreitz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Max Reitz 2021-06-25 16:23:14 +02:00 committed by Kevin Wolf
parent 8fc54f9428
commit 9bad96a8cc
1 changed files with 11 additions and 9 deletions
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20
block/export/fuse.c
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@ -417,20 +417,22 @@ static void fuse_setattr(fuse_req_t req, fuse_ino_t inode, struct stat *statbuf,
FuseExport *exp = fuse_req_userdata(req);
int ret;
if (!exp->writable) {
fuse_reply_err(req, EACCES);
return;
}
if (to_set & ~FUSE_SET_ATTR_SIZE) {
fuse_reply_err(req, ENOTSUP);
return;
}
ret = fuse_do_truncate(exp, statbuf->st_size, true, PREALLOC_MODE_OFF);
if (ret < 0) {
fuse_reply_err(req, -ret);
return;
if (to_set & FUSE_SET_ATTR_SIZE) {
if (!exp->writable) {
fuse_reply_err(req, EACCES);
return;
}
ret = fuse_do_truncate(exp, statbuf->st_size, true, PREALLOC_MODE_OFF);
if (ret < 0) {
fuse_reply_err(req, -ret);
return;
}
}
fuse_getattr(req, inode, fi);