forked from proxmox-mirrors/proxmox
d4b4115400
this removes proxmox_sys as a dependecy for proxmox-async Signed-off-by: Dominik Csapak <d.csapak@proxmox.com> Signed-off-by: Wolfgang Bumiller <w.bumiller@proxmox.com>
23 lines
643 B
Rust
23 lines
643 B
Rust
/// Roughly equivalent to `nix::Errno::result`. Turns a `-1` into an `io::Error`, while passing
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/// other values through as `Ok(n)`.
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#[macro_export]
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macro_rules! c_result {
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($call:expr) => {{
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let rc = $call;
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if rc == -1 {
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::std::io::Result::Err(::std::io::Error::last_os_error())
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} else {
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::std::io::Result::Ok(rc)
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}
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}};
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}
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/// Like the old `try!` macro, but for return values of extern `C` calls. This is equivalent to
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/// doing `c_result!(expr)?` (note the question mark).
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#[macro_export]
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macro_rules! c_try {
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($expr:expr) => {{
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$crate::c_result!($expr)?
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}};
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}
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