diff mbox series

linux-user/syscall.c: malloc to g_try_malloc

Message ID 20220104143841.25116-1-email@aabouzied.com
State New
Headers show
Series linux-user/syscall.c: malloc to g_try_malloc | expand

Commit Message

Ahmed Abouzied Jan. 4, 2022, 2:38 p.m. UTC
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>
---

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(-)

Comments

Laurent Vivier Jan. 5, 2022, 10:26 a.m. UTC | #1
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>
> ---
> 
> 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
Laurent Vivier Jan. 6, 2022, 2:05 p.m. UTC | #2
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
>
John Snow Jan. 10, 2022, 7:42 p.m. UTC | #3
On Thu, Jan 6, 2022 at 9:10 AM Laurent Vivier <laurent@vivier.eu> wrote:

> 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
> >
>
>
IIRC, consensus was that this task was not "bite sized", as it might
possibly be a large task without an easily attainable "end". You don't need
to worry about creating a GitLab issue to track it (Unless you WANT to for
your own tracking, then go ahead and make one), but if you believe that the
task is now *done* in its entirety, the task should be removed from the
wiki.

Feel free to send me questions if you've got any.

--js
diff mbox series

Patch

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;