Messages in this thread Patch in this message | | | From | Sun Ke <> | Subject | [PATCH v4] cachefiles: fix error return code in cachefiles_ondemand_copen() | Date | Fri, 26 Aug 2022 10:35:15 +0800 |
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The cache_size field of copen is specified by the user daemon. If cache_size < 0, then the OPEN request is expected to fail, while copen itself shall succeed. However, returning 0 is indeed unexpected when cache_size is an invalid error code.
Fix this by returning error when cache_size is an invalid error code.
Fixes: c8383054506c ("cachefiles: notify the user daemon when looking up cookie") Signed-off-by: Sun Ke <sunke32@huawei.com> Suggested-by: Jeffle Xu <jefflexu@linux.alibaba.com> Suggested-by: Dan Carpenter <dan.carpenter@oracle.com> --- v4: update the code suggested by Dan v3: update the commit log suggested by Jingbo. fs/cachefiles/ondemand.c | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-)
diff --git a/fs/cachefiles/ondemand.c b/fs/cachefiles/ondemand.c index 1fee702d5529..7e1586bd5cf3 100644 --- a/fs/cachefiles/ondemand.c +++ b/fs/cachefiles/ondemand.c @@ -158,9 +158,13 @@ int cachefiles_ondemand_copen(struct cachefiles_cache *cache, char *args) /* fail OPEN request if daemon reports an error */ if (size < 0) { - if (!IS_ERR_VALUE(size)) - size = -EINVAL; - req->error = size; + if (!IS_ERR_VALUE(size)) { + req->error = -EINVAL; + ret = -EINVAL; + } else { + req->error = size; + ret = 0; + } goto out; } -- 2.31.1
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