wasmer_wasix/journal/effector/syscalls/
fd_renumber.rs

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
use super::*;

impl JournalEffector {
    pub fn save_fd_renumber(
        ctx: &mut FunctionEnvMut<'_, WasiEnv>,
        from: Fd,
        to: Fd,
    ) -> anyhow::Result<()> {
        Self::save_event(
            ctx,
            JournalEntry::RenumberFileDescriptorV1 {
                old_fd: from,
                new_fd: to,
            },
        )
    }

    pub fn apply_fd_renumber(
        ctx: &mut FunctionEnvMut<'_, WasiEnv>,
        from: Fd,
        to: Fd,
    ) -> anyhow::Result<()> {
        let ret = crate::syscalls::fd_renumber_internal(ctx, from, to);
        if ret != Errno::Success {
            bail!(
                "journal restore error: failed to renumber descriptor (from={}, to={}) - {}",
                from,
                to,
                ret
            );
        }
        Ok(())
    }
}