[dpdk-dev] [PATCH] eal/linuxapp: check mmap return value MAP_FAILED

[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.how...@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