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Move the check location following Linux behaviors

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This commit is contained in:
Marsman1996
2024-08-18 14:58:00 +08:00
committed by Tate, Hongliang Tian
parent 18607c33ea
commit 22f9c072f3
1 changed files with 9 additions and 9 deletions
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18
kernel/aster-nix/src/syscall/madvise.rs
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@ -14,6 +14,14 @@ pub fn sys_madvise(
"start = 0x{:x}, len = 0x{:x}, behavior = {:?}", "start = 0x{:x}, len = 0x{:x}, behavior = {:?}",
start, len, behavior start, len, behavior
); );
if start % PAGE_SIZE != 0 {
return_errno_with_message!(Errno::EINVAL, "the start address should be page aligned");
}
if len == 0 {
return Ok(SyscallReturn::Return(0));
}
match behavior { match behavior {
MadviseBehavior::MADV_NORMAL MadviseBehavior::MADV_NORMAL
| MadviseBehavior::MADV_SEQUENTIAL | MadviseBehavior::MADV_SEQUENTIAL
@ -33,16 +41,8 @@ pub fn sys_madvise(
} }
fn madv_free(start: Vaddr, len: usize, ctx: &Context) -> Result<()> { fn madv_free(start: Vaddr, len: usize, ctx: &Context) -> Result<()> {
if start % PAGE_SIZE != 0 {
return_errno_with_message!(Errno::EINVAL, "the start address should be page aligned");
}
if len % PAGE_SIZE != 0 { if len % PAGE_SIZE != 0 {
return_errno_with_message!(Errno::EINVAL, "the length should be page aligned"); return Ok(());
}
if len == 0 {
return_errno_with_message!(Errno::EINVAL, "madv_free len cannot be zero");
} }
let root_vmar = ctx.process.root_vmar(); let root_vmar = ctx.process.root_vmar();