[dpdk-dev] eal/linuxapp: check mmap return value MAP_FAILED
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Commit Message
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(+)
@@ -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;
}