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* [dpdk-dev] [PATCH] eal/linuxapp: check mmap return value MAP_FAILED
@ 2017-08-15 20:53 Seth Howell
  2017-08-28 21:46 ` [dpdk-dev] [PATCH v2] " Seth Howell
  2017-08-28 21:49 ` [dpdk-dev] [PATCH v3] " Seth Howell
  0 siblings, 2 replies; 5+ messages in thread
From: Seth Howell @ 2017-08-15 20:53 UTC (permalink / raw)
  To: dev; +Cc: Seth Howell

If mmap fails, it will return the value MAP_FAILED. Checking for this return
code allows us to properly identify mmap failures and report them as such
to the calling function.

Signed-off-by: Seth Howell <seth.howell@intel.com>
---
 lib/librte_eal/linuxapp/eal/eal_memory.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/lib/librte_eal/linuxapp/eal/eal_memory.c b/lib/librte_eal/linuxapp/eal/eal_memory.c
index 5279128..ba76b02 100644
--- a/lib/librte_eal/linuxapp/eal/eal_memory.c
+++ b/lib/librte_eal/linuxapp/eal/eal_memory.c
@@ -716,6 +716,8 @@ create_shared_memory(const char *filename, const size_t mem_size)
 	}
 	retval = mmap(NULL, mem_size, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
 	close(fd);
+	if (retval == MAP_FAILED)
+	    return NULL;
 	return retval;
 }
 
-- 
2.9.5

^ permalink raw reply	[flat|nested] 5+ messages in thread

* [dpdk-dev] [PATCH v2] eal/linuxapp: check mmap return value MAP_FAILED
  2017-08-15 20:53 [dpdk-dev] [PATCH] eal/linuxapp: check mmap return value MAP_FAILED Seth Howell
@ 2017-08-28 21:46 ` Seth Howell
  2017-08-28 21:49 ` [dpdk-dev] [PATCH v3] " Seth Howell
  1 sibling, 0 replies; 5+ messages in thread
From: Seth Howell @ 2017-08-28 21:46 UTC (permalink / raw)
  To: dev; +Cc: Seth Howell

If mmap fails, it will return the value MAP_FAILED. Checking for this
return code allows us to properly identify mmap failures and report
them as such to the calling function.

Signed-off-by: Seth Howell <seth.howell@intel.com>
---
 lib/librte_eal/linuxapp/eal/eal_memory.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/lib/librte_eal/linuxapp/eal/eal_memory.c b/lib/librte_eal/linuxapp/eal/eal_memory.c
index 5279128..ba76b02 100644
--- a/lib/librte_eal/linuxapp/eal/eal_memory.c
+++ b/lib/librte_eal/linuxapp/eal/eal_memory.c
@@ -716,6 +716,8 @@ create_shared_memory(const char *filename, const size_t mem_size)
 	}
 	retval = mmap(NULL, mem_size, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
 	close(fd);
+	if (retval == MAP_FAILED)
+	    return NULL;
 	return retval;
 }
 
-- 
2.9.5

^ permalink raw reply	[flat|nested] 5+ messages in thread

* [dpdk-dev] [PATCH v3] eal/linuxapp: check mmap return value MAP_FAILED
  2017-08-15 20:53 [dpdk-dev] [PATCH] eal/linuxapp: check mmap return value MAP_FAILED Seth Howell
  2017-08-28 21:46 ` [dpdk-dev] [PATCH v2] " Seth Howell
@ 2017-08-28 21:49 ` Seth Howell
  2017-08-29  8:31   ` Sergio Gonzalez Monroy
  1 sibling, 1 reply; 5+ messages in thread
From: Seth Howell @ 2017-08-28 21:49 UTC (permalink / raw)
  To: dev; +Cc: Seth Howell

If mmap fails, it will return the value MAP_FAILED. Checking for this
return code allows us to properly identify mmap failures and report
them as such to the calling function.

Signed-off-by: Seth Howell <seth.howell@intel.com>
---
 lib/librte_eal/linuxapp/eal/eal_memory.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/lib/librte_eal/linuxapp/eal/eal_memory.c b/lib/librte_eal/linuxapp/eal/eal_memory.c
index 5279128..63fec29 100644
--- a/lib/librte_eal/linuxapp/eal/eal_memory.c
+++ b/lib/librte_eal/linuxapp/eal/eal_memory.c
@@ -716,6 +716,8 @@ create_shared_memory(const char *filename, const size_t mem_size)
 	}
 	retval = mmap(NULL, mem_size, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
 	close(fd);
+	if (retval == MAP_FAILED)
+		return NULL;
 	return retval;
 }
 
-- 
2.9.5

^ permalink raw reply	[flat|nested] 5+ messages in thread

* Re: [dpdk-dev] [PATCH v3] eal/linuxapp: check mmap return value MAP_FAILED
  2017-08-28 21:49 ` [dpdk-dev] [PATCH v3] " Seth Howell
@ 2017-08-29  8:31   ` Sergio Gonzalez Monroy
  2017-10-09 21:18     ` Thomas Monjalon
  0 siblings, 1 reply; 5+ messages in thread
From: Sergio Gonzalez Monroy @ 2017-08-29  8:31 UTC (permalink / raw)
  To: Seth Howell, dev

On 28/08/2017 22:49, Seth Howell wrote:
> If mmap fails, it will return the value MAP_FAILED. Checking for this
> return code allows us to properly identify mmap failures and report
> them as such to the calling function.
>
> Signed-off-by: Seth Howell <seth.howell@intel.com>
> ---
>   lib/librte_eal/linuxapp/eal/eal_memory.c | 2 ++
>   1 file changed, 2 insertions(+)
>
> diff --git a/lib/librte_eal/linuxapp/eal/eal_memory.c b/lib/librte_eal/linuxapp/eal/eal_memory.c
> index 5279128..63fec29 100644
> --- a/lib/librte_eal/linuxapp/eal/eal_memory.c
> +++ b/lib/librte_eal/linuxapp/eal/eal_memory.c
> @@ -716,6 +716,8 @@ create_shared_memory(const char *filename, const size_t mem_size)
>   	}
>   	retval = mmap(NULL, mem_size, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
>   	close(fd);
> +	if (retval == MAP_FAILED)
> +		return NULL;
>   	return retval;
>   }
>   

Acked-by: Sergio Gonzalez Monroy <sergio.gonzalez.monroy@intel.com>

^ permalink raw reply	[flat|nested] 5+ messages in thread

* Re: [dpdk-dev] [PATCH v3] eal/linuxapp: check mmap return value MAP_FAILED
  2017-08-29  8:31   ` Sergio Gonzalez Monroy
@ 2017-10-09 21:18     ` Thomas Monjalon
  0 siblings, 0 replies; 5+ messages in thread
From: Thomas Monjalon @ 2017-10-09 21:18 UTC (permalink / raw)
  To: Seth Howell; +Cc: dev, Sergio Gonzalez Monroy

29/08/2017 10:31, Sergio Gonzalez Monroy:
> On 28/08/2017 22:49, Seth Howell wrote:
> > If mmap fails, it will return the value MAP_FAILED. Checking for this
> > return code allows us to properly identify mmap failures and report
> > them as such to the calling function.
> >
> > Signed-off-by: Seth Howell <seth.howell@intel.com>
> 
> Acked-by: Sergio Gonzalez Monroy <sergio.gonzalez.monroy@intel.com>

Applied, thanks

^ permalink raw reply	[flat|nested] 5+ messages in thread

end of thread, other threads:[~2017-10-09 21:18 UTC | newest]

Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed)
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2017-08-15 20:53 [dpdk-dev] [PATCH] eal/linuxapp: check mmap return value MAP_FAILED Seth Howell
2017-08-28 21:46 ` [dpdk-dev] [PATCH v2] " Seth Howell
2017-08-28 21:49 ` [dpdk-dev] [PATCH v3] " Seth Howell
2017-08-29  8:31   ` Sergio Gonzalez Monroy
2017-10-09 21:18     ` Thomas Monjalon

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