* [PATCH bpf] tools: bpftool: Add missing close before bpftool net attach exit
@ 2020-11-09 7:04 Wang Hai
2020-11-09 10:07 ` Quentin Monnet
2020-11-09 10:51 ` Michal Rostecki
0 siblings, 2 replies; 5+ messages in thread
From: Wang Hai @ 2020-11-09 7:04 UTC (permalink / raw)
To: ast, daniel, kafai, songliubraving, yhs, andrii, john.fastabend,
kpsingh, toke, quentin, danieltimlee
Cc: bpf, netdev, linux-kernel
progfd is created by prog_parse_fd(), before 'bpftool net attach' exit,
it should be closed.
Fixes: 04949ccc273e ("tools: bpftool: add net attach command to attach XDP on interface")
Signed-off-by: Wang Hai <wanghai38@huawei.com>
---
tools/bpf/bpftool/net.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/tools/bpf/bpftool/net.c b/tools/bpf/bpftool/net.c
index 910e7bac6e9e..3e9b40e64fb0 100644
--- a/tools/bpf/bpftool/net.c
+++ b/tools/bpf/bpftool/net.c
@@ -600,12 +600,14 @@ static int do_attach(int argc, char **argv)
if (err < 0) {
p_err("interface %s attach failed: %s",
attach_type_strings[attach_type], strerror(-err));
+ close(progfd);
return err;
}
if (json_output)
jsonw_null(json_wtr);
+ close(progfd);
return 0;
}
--
2.17.1
^ permalink raw reply related [flat|nested] 5+ messages in thread
* Re: [PATCH bpf] tools: bpftool: Add missing close before bpftool net attach exit
2020-11-09 7:04 [PATCH bpf] tools: bpftool: Add missing close before bpftool net attach exit Wang Hai
@ 2020-11-09 10:07 ` Quentin Monnet
2020-11-09 10:51 ` Michal Rostecki
1 sibling, 0 replies; 5+ messages in thread
From: Quentin Monnet @ 2020-11-09 10:07 UTC (permalink / raw)
To: Wang Hai, ast, daniel, kafai, songliubraving, yhs, andrii,
john.fastabend, kpsingh, toke, danieltimlee
Cc: bpf, netdev, linux-kernel
On 09/11/2020 07:04, Wang Hai wrote:
> progfd is created by prog_parse_fd(), before 'bpftool net attach' exit,
> it should be closed.
>
> Fixes: 04949ccc273e ("tools: bpftool: add net attach command to attach XDP on interface")
> Signed-off-by: Wang Hai <wanghai38@huawei.com>
Reviewed-by: Quentin Monnet <quentin@isovalent.com>
Thanks!
Quentin
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [PATCH bpf] tools: bpftool: Add missing close before bpftool net attach exit
2020-11-09 7:04 [PATCH bpf] tools: bpftool: Add missing close before bpftool net attach exit Wang Hai
2020-11-09 10:07 ` Quentin Monnet
@ 2020-11-09 10:51 ` Michal Rostecki
2020-11-09 21:37 ` John Fastabend
2020-11-10 1:57 ` wanghai (M)
1 sibling, 2 replies; 5+ messages in thread
From: Michal Rostecki @ 2020-11-09 10:51 UTC (permalink / raw)
To: Wang Hai, ast, daniel, kafai, songliubraving, yhs, andrii,
john.fastabend, kpsingh, toke, quentin, danieltimlee
Cc: bpf, netdev, linux-kernel
On 11/9/20 8:04 AM, Wang Hai wrote:
> progfd is created by prog_parse_fd(), before 'bpftool net attach' exit,
> it should be closed.
>
> Fixes: 04949ccc273e ("tools: bpftool: add net attach command to attach XDP on interface")
> Signed-off-by: Wang Hai <wanghai38@huawei.com>
> ---
> tools/bpf/bpftool/net.c | 2 ++
> 1 file changed, 2 insertions(+)
>
> diff --git a/tools/bpf/bpftool/net.c b/tools/bpf/bpftool/net.c
> index 910e7bac6e9e..3e9b40e64fb0 100644
> --- a/tools/bpf/bpftool/net.c
> +++ b/tools/bpf/bpftool/net.c
> @@ -600,12 +600,14 @@ static int do_attach(int argc, char **argv)
> if (err < 0) {
> p_err("interface %s attach failed: %s",
> attach_type_strings[attach_type], strerror(-err));
> + close(progfd);
> return err;
> }
>
> if (json_output)
> jsonw_null(json_wtr);
>
> + close(progfd);
> return 0;
> }
>
Nit - wouldn't it be better to create a `cleanup`/`out` section before
return and use goto, to avoid copying the `close` call?
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [PATCH bpf] tools: bpftool: Add missing close before bpftool net attach exit
2020-11-09 10:51 ` Michal Rostecki
@ 2020-11-09 21:37 ` John Fastabend
2020-11-10 1:57 ` wanghai (M)
1 sibling, 0 replies; 5+ messages in thread
From: John Fastabend @ 2020-11-09 21:37 UTC (permalink / raw)
To: Michal Rostecki, Wang Hai, ast, daniel, kafai, songliubraving,
yhs, andrii, john.fastabend, kpsingh, toke, quentin,
danieltimlee
Cc: bpf, netdev, linux-kernel
Michal Rostecki wrote:
> On 11/9/20 8:04 AM, Wang Hai wrote:
> > progfd is created by prog_parse_fd(), before 'bpftool net attach' exit,
> > it should be closed.
> >
> > Fixes: 04949ccc273e ("tools: bpftool: add net attach command to attach XDP on interface")
> > Signed-off-by: Wang Hai <wanghai38@huawei.com>
> > ---
> > tools/bpf/bpftool/net.c | 2 ++
> > 1 file changed, 2 insertions(+)
> >
> > diff --git a/tools/bpf/bpftool/net.c b/tools/bpf/bpftool/net.c
> > index 910e7bac6e9e..3e9b40e64fb0 100644
> > --- a/tools/bpf/bpftool/net.c
> > +++ b/tools/bpf/bpftool/net.c
> > @@ -600,12 +600,14 @@ static int do_attach(int argc, char **argv)
> > if (err < 0) {
> > p_err("interface %s attach failed: %s",
> > attach_type_strings[attach_type], strerror(-err));
> > + close(progfd);
> > return err;
> > }
> >
> > if (json_output)
> > jsonw_null(json_wtr);
> >
> > + close(progfd);
> > return 0;
> > }
> >
>
> Nit - wouldn't it be better to create a `cleanup`/`out` section before
> return and use goto, to avoid copying the `close` call?
I agree would be nicer.
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [PATCH bpf] tools: bpftool: Add missing close before bpftool net attach exit
2020-11-09 10:51 ` Michal Rostecki
2020-11-09 21:37 ` John Fastabend
@ 2020-11-10 1:57 ` wanghai (M)
1 sibling, 0 replies; 5+ messages in thread
From: wanghai (M) @ 2020-11-10 1:57 UTC (permalink / raw)
To: Michal Rostecki
Cc: ast, daniel, kafai, songliubraving, yhs, andrii, john.fastabend,
kpsingh, toke, quentin, danieltimlee, bpf, netdev, linux-kernel
在 2020/11/9 18:51, Michal Rostecki 写道:
> On 11/9/20 8:04 AM, Wang Hai wrote:
>> progfd is created by prog_parse_fd(), before 'bpftool net attach' exit,
>> it should be closed.
>>
>> Fixes: 04949ccc273e ("tools: bpftool: add net attach command to
>> attach XDP on interface")
>> Signed-off-by: Wang Hai <wanghai38@huawei.com>
>> ---
>> tools/bpf/bpftool/net.c | 2 ++
>> 1 file changed, 2 insertions(+)
>>
>> diff --git a/tools/bpf/bpftool/net.c b/tools/bpf/bpftool/net.c
>> index 910e7bac6e9e..3e9b40e64fb0 100644
>> --- a/tools/bpf/bpftool/net.c
>> +++ b/tools/bpf/bpftool/net.c
>> @@ -600,12 +600,14 @@ static int do_attach(int argc, char **argv)
>> if (err < 0) {
>> p_err("interface %s attach failed: %s",
>> attach_type_strings[attach_type], strerror(-err));
>> + close(progfd);
>> return err;
>> }
>> if (json_output)
>> jsonw_null(json_wtr);
>> + close(progfd);
>> return 0;
>> }
>
> Nit - wouldn't it be better to create a `cleanup`/`out` section before
> return and use goto, to avoid copying the `close` call?
> .
>
Thanks for review. I just sent v2 patch
"[PATCH v2 bpf] tools: bpftool: Add missing close before bpftool net
attach exit"
^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2020-11-10 1:57 UTC | newest]
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2020-11-09 7:04 [PATCH bpf] tools: bpftool: Add missing close before bpftool net attach exit Wang Hai
2020-11-09 10:07 ` Quentin Monnet
2020-11-09 10:51 ` Michal Rostecki
2020-11-09 21:37 ` John Fastabend
2020-11-10 1:57 ` wanghai (M)
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