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Fix panic for empty file actions

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Hui, Chunyang 2021-07-22 11:10:38 +00:00 committed by Zongmin.Gu
parent dc67dfb9aa
commit 123369d6ce
1 changed files with 3 additions and 0 deletions
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src/libos/src/process/syscalls.rs
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@ -198,6 +198,9 @@ fn clone_file_actions_from_fa_safely(fa_ptr: *const SpawnFileActions) -> Result<
let fa = unsafe { &*fa_ptr }; let fa = unsafe { &*fa_ptr };
let sa_ptr = fa.actions; let sa_ptr = fa.actions;
let sa_len = fa.used as usize; let sa_len = fa.used as usize;
if (sa_ptr == std::ptr::null() && sa_len == 0) {
return Ok(file_actions);
}
check_array(sa_ptr, sa_len)?; check_array(sa_ptr, sa_len)?;
unsafe { std::slice::from_raw_parts(sa_ptr, sa_len) } unsafe { std::slice::from_raw_parts(sa_ptr, sa_len) }
}; };