Byte Sized task (was Re: [PATCH] linux-user/syscall.c: malloc to g_try_malloc)

[Laurent Vivier <laurent@vivier.eu>]

Hi Ahmed,

the email address you use for the trivial ML is broken. I've fixed it for my answer and added 
qemu-devel.

Le 05/01/2022 à 20:09, Ahmed Abouzied a écrit :
> Hello,
> 
> Thanks for the review. I also found some occurrences of "cpu_physical_memor_*" calls that should be 
> replaced with "address_space_*" around the codebase as mentioned 
> [here](https://wiki.qemu.org/Contribute/BiteSizedTasks 
> <https://wiki.qemu.org/Contribute/BiteSizedTasks>) in the API conversion section. The "/hw" 
> directory for instance. Should I go about replacing those as well? Should I create a Gitlab issue 
> first to track the changes?


According to the wiki, the gitlab issue are already created with the "Byte Sized" label.

https://gitlab.com/qemu-project/qemu/-/issues?scope=all&state=opened&label_name[]=Bite%20Sized

But this one is not, I think John can help you for that (added in cc:)

Thanks,
Laurent

> Best regards,
> Ahmed
> 
> On Wed, 5 Jan 2022 at 12:26, Laurent Vivier <laurent@vivier.eu <mailto:laurent@vivier.eu>> wrote:
> 
>     Le 04/01/2022 à 15:38, Ahmed Abouzied a écrit :
>      > Use g_try_malloc instead of malloc to alocate the target ifconfig.
>      > Also replace the corresponding free with g_free.
>      >
>      > Signed-off-by: Ahmed Abouzied <email@aabouzied.com <mailto:email@aabouzied.com>>
>      > ---
>      >
>      > Hello,
>      >
>      > I noticed that there was a `malloc` call in this file. It seems that it
>      > was added by the commit 22e4a267 (3 years ago) which was after the commit
>      > 0e173b24 (6 years ago) that replaced malloc calls with glib alternative calls.
>      >
>      > There is no issue for this on Gitlab. Should I have created an issue
>      > first?
>      >
>      > Best regards,
>      >
>      >   linux-user/syscall.c | 4 ++--
>      >   1 file changed, 2 insertions(+), 2 deletions(-)
>      >
>      > diff --git a/linux-user/syscall.c b/linux-user/syscall.c
>      > index 56a3e17183..715f9430e1 100644
>      > --- a/linux-user/syscall.c
>      > +++ b/linux-user/syscall.c
>      > @@ -4867,7 +4867,7 @@ static abi_long do_ioctl_ifconf(const IOCTLEntry *ie, uint8_t *buf_temp,
>      >                * We can't fit all the extents into the fixed size buffer.
>      >                * Allocate one that is large enough and use it instead.
>      >                */
>      > -            host_ifconf = malloc(outbufsz);
>      > +            host_ifconf = g_try_malloc(outbufsz);
>      >               if (!host_ifconf) {
>      >                   return -TARGET_ENOMEM;
>      >               }
>      > @@ -4915,7 +4915,7 @@ static abi_long do_ioctl_ifconf(const IOCTLEntry *ie, uint8_t *buf_temp,
>      >       }
>      >
>      >       if (free_buf) {
>      > -        free(host_ifconf);
>      > +        g_free(host_ifconf);
>      >       }
>      >
>      >       return ret;
> 
>     Applied to my linux-user-for-7.0 branch.
> 
>     Thanks,
>     Laurent
>