Re: [PATCH 5/8] util/compatfd.c: Replaced a malloc with GLib's variant

[Thomas Huth <thuth@redhat.com>]

On 14/03/2021 04.23, Mahmoud Mandour wrote:
> Replaced a malloc() call and its respective free() call with
> GLib's g_try_malloc() and g_free().
> 
> Also, did slight styling changes that were producing
> style errors when using the checkpatch.pl script against
> the file.

If it's unrelated, then maybe better do it in a separate patch.

> Signed-off-by: Mahmoud Mandour <ma.mandourr@gmail.com>
> ---
>   util/compatfd.c | 10 +++++-----
>   1 file changed, 5 insertions(+), 5 deletions(-)
> 
> diff --git a/util/compatfd.c b/util/compatfd.c
> index ee47dd8089..834ddd0573 100644
> --- a/util/compatfd.c
> +++ b/util/compatfd.c
> @@ -20,8 +20,7 @@
>   #include <sys/syscall.h>
>   #endif
>   
> -struct sigfd_compat_info
> -{
> +struct sigfd_compat_info {
>       sigset_t mask;
>       int fd;
>   };
> @@ -53,8 +52,9 @@ static void *sigwait_compat(void *opaque)
>   
>                   len = write(info->fd, (char *)&buffer + offset,
>                               sizeof(buffer) - offset);
> -                if (len == -1 && errno == EINTR)
> +                if (len == -1 && errno == EINTR) {
>                       continue;
> +                }
>   
>                   if (len <= 0) {
>                       return NULL;
> @@ -72,14 +72,14 @@ static int qemu_signalfd_compat(const sigset_t *mask)
>       QemuThread thread;
>       int fds[2];
>   
> -    info = malloc(sizeof(*info));
> +    info = g_try_malloc(sizeof(*info));
>       if (info == NULL) {
>           errno = ENOMEM;
>           return -1;
>       }

Since this is only a very small allocation, I think it would be better to 
use g_malloc() here and then simply remove the "if (info == NULL) ..." part.

  Thomas