Re: [PATCH] Btrfs-progs: subvol_uuid_search: Return error code on memory allocation failure

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On Wed, Oct 05, 2016 at 06:33:12PM +0530, Prasanth K S R wrote:
> From: Prasanth K S R <prasanth.ksr@xxxxxxxx>
> 
> This commit fixes coverity defect CID 1328695.
> 
> Signed-off-by: Prasanth K S R <prasanth.ksr@xxxxxxxx>
> ---
>  send-utils.c | 5 +++++
>  1 file changed, 5 insertions(+)
> 
> diff --git a/send-utils.c b/send-utils.c
> index a85fa08..6f80b6f 100644
> --- a/send-utils.c
> +++ b/send-utils.c
> @@ -486,6 +486,11 @@ struct subvol_info *subvol_uuid_search(struct subvol_uuid_search *s,
>  		info->path = strdup(path);
>  	} else {
>  		info->path = malloc(PATH_MAX);
> +		if (!info->path) {
> +			fprintf(stderr, "Memory allocation failed\n");

Please use the error() helper (does not need \n terminated string).

Also, would be grat to convert subvol_uuid_search to return ERR_PTR
style value (which means to conver all callers). Now we don't see why
exactly it fails and interpret it as nonexistence of the uuid.
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