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authorAlice Ryhl <aliceryhl@google.com>2023-05-04 09:48:54 +0300
committerMiguel Ojeda <ojeda@kernel.org>2023-05-31 19:53:10 +0300
commite37b654c379e514357ccadb22c6291d3471fa5e5 (patch)
treef24d90d8c3bacad9001807aaf0d54a72d038fec8 /rust
parent66bd7533ef19bf8a3515ce702013aba368f58df3 (diff)
downloadlinux-e37b654c379e514357ccadb22c6291d3471fa5e5.tar.xz
rust: error: add missing error codes
This adds the error codes from `include/linux/errno.h` to the list of Rust error constants. These errors were not included originally, because they are not supposed to be visible from userspace. However, they are still a perfectly valid error to use when writing a kernel driver. For example, you might want to return ERESTARTSYS if you receive a signal during a call to `schedule`. This patch inserts an annotation to skip rustfmt on the list of error codes. Without it, three of the error codes are split over several lines, which looks terribly inconsistent. Signed-off-by: Alice Ryhl <aliceryhl@google.com> Reviewed-by: Martin Rodriguez Reboredo <yakoyoku@gmail.com> Link: https://lore.kernel.org/r/20230504064854.774820-1-aliceryhl@google.com Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
Diffstat (limited to 'rust')
-rw-r--r--rust/kernel/error.rs20
1 files changed, 20 insertions, 0 deletions
diff --git a/rust/kernel/error.rs b/rust/kernel/error.rs
index 01dd4d2f63d2..7c1ce2bccd08 100644
--- a/rust/kernel/error.rs
+++ b/rust/kernel/error.rs
@@ -14,6 +14,7 @@ use core::num::TryFromIntError;
use core::str::Utf8Error;
/// Contains the C-compatible error codes.
+#[rustfmt::skip]
pub mod code {
macro_rules! declare_err {
($err:tt $(,)? $($doc:expr),+) => {
@@ -58,6 +59,25 @@ pub mod code {
declare_err!(EPIPE, "Broken pipe.");
declare_err!(EDOM, "Math argument out of domain of func.");
declare_err!(ERANGE, "Math result not representable.");
+ declare_err!(ERESTARTSYS, "Restart the system call.");
+ declare_err!(ERESTARTNOINTR, "System call was interrupted by a signal and will be restarted.");
+ declare_err!(ERESTARTNOHAND, "Restart if no handler.");
+ declare_err!(ENOIOCTLCMD, "No ioctl command.");
+ declare_err!(ERESTART_RESTARTBLOCK, "Restart by calling sys_restart_syscall.");
+ declare_err!(EPROBE_DEFER, "Driver requests probe retry.");
+ declare_err!(EOPENSTALE, "Open found a stale dentry.");
+ declare_err!(ENOPARAM, "Parameter not supported.");
+ declare_err!(EBADHANDLE, "Illegal NFS file handle.");
+ declare_err!(ENOTSYNC, "Update synchronization mismatch.");
+ declare_err!(EBADCOOKIE, "Cookie is stale.");
+ declare_err!(ENOTSUPP, "Operation is not supported.");
+ declare_err!(ETOOSMALL, "Buffer or request is too small.");
+ declare_err!(ESERVERFAULT, "An untranslatable error occurred.");
+ declare_err!(EBADTYPE, "Type not supported by server.");
+ declare_err!(EJUKEBOX, "Request initiated, but will not complete before timeout.");
+ declare_err!(EIOCBQUEUED, "iocb queued, will get completion event.");
+ declare_err!(ERECALLCONFLICT, "Conflict with recalled state.");
+ declare_err!(ENOGRACE, "NFS file lock reclaim refused.");
}
/// Generic integer kernel error.