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hurd: Do not allow unmapping address 0

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* sysdeps/mach/munmap.c (__munmap): Return EINVAL if `addr' is 0.
This commit is contained in:
Samuel Thibault
2014-04-16 23:16:15 +02:00
parent f19dfa0afd
commit fd15a59b20
2 changed files with 11 additions and 0 deletions
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7
sysdeps/mach/munmap.c
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@@ -27,6 +27,13 @@ int
__munmap (__ptr_t addr, size_t len)
{
kern_return_t err;
if (addr == 0)
{
errno = EINVAL;
return -1;
}
if (err = __vm_deallocate (__mach_task_self (),
(vm_address_t) addr, (vm_size_t) len))
{