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execve(): return correct error value when failure (errno)

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This commit is contained in:
Balazs Gerofi bgerofi@riken.jp
2014-08-07 14:35:15 +09:00
parent 9448cefe80
commit 9fda245490
2 changed files with 48 additions and 6 deletions
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20
kernel/syscall.c
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@@ -1188,6 +1188,21 @@ SYSCALL_DECLARE(execve)
struct syscall_request request IHK_DMA_ALIGN;
struct program_load_desc *desc;
struct process_vm *vm = cpu_local_var(current)->vm;
struct vm_range *range;
ihk_mc_spinlock_lock_noirq(&vm->memory_range_lock);
range = lookup_process_memory_range(vm, (unsigned long)filename,
(unsigned long)filename+1);
if (range == NULL || !(range->flag & VR_PROT_READ)) {
ihk_mc_spinlock_unlock_noirq(&vm->memory_range_lock);
kprintf("execve(): ERROR: filename is bad address\n");
return -EFAULT;
}
ihk_mc_spinlock_unlock_noirq(&vm->memory_range_lock);
desc = ihk_mc_alloc_pages(1, IHK_MC_AP_NOWAIT);
if (!desc) {
@@ -1205,8 +1220,9 @@ SYSCALL_DECLARE(execve)
ret = do_syscall(&request, ctx, ihk_mc_get_processor_id(), 0);
if (ret != 0) {
kprintf("execve(): ERROR: host failed to load elf header\n");
return -EINVAL;
kprintf("execve(): ERROR: host failed to load elf header, errno: %d\n",
ret);
return -ret;
}
dkprintf("execve(): ELF desc received, num sections: %d\n",