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[syserror] Refactor linuxerr and error package.

Browse Source 
Move Error struct to pkg/errors package for use in multiple places.
Move linuxerr static definitions under pkg/errors/linuxerr.
Add a lookup list for quick lookup of *errors.Error by errno. This is useful
when converting syserror errors and unix.Errno/syscall.Errrno values to
*errors.Error.
Update benchmarks routines to include conversions.

The below benchmarks show *errors.Error usage to be comparable to using
unix.Errno.

BenchmarkAssignUnix
BenchmarkAssignUnix-32                 	787875022	         1.284 ns/op
BenchmarkAssignLinuxerr
BenchmarkAssignLinuxerr-32             	1000000000	         1.209 ns/op
BenchmarkAssignSyserror
BenchmarkAssignSyserror-32             	759269229	         1.429 ns/op
BenchmarkCompareUnix
BenchmarkCompareUnix-32                	1000000000	         1.310 ns/op
BenchmarkCompareLinuxerr
BenchmarkCompareLinuxerr-32            	1000000000	         1.241 ns/op
BenchmarkCompareSyserror
BenchmarkCompareSyserror-32            	147196165	         8.248 ns/op
BenchmarkSwitchUnix
BenchmarkSwitchUnix-32                 	373233556	         3.664 ns/op
BenchmarkSwitchLinuxerr
BenchmarkSwitchLinuxerr-32             	476323929	         3.294 ns/op
BenchmarkSwitchSyserror
BenchmarkSwitchSyserror-32             	39293408	        29.62 ns/op
BenchmarkReturnUnix
BenchmarkReturnUnix-32                 	1000000000	         0.5042 ns/op
BenchmarkReturnLinuxerr
BenchmarkReturnLinuxerr-32             	1000000000	         0.8152 ns/op
BenchmarkConvertUnixLinuxerr
BenchmarkConvertUnixLinuxerr-32        	739948875	         1.547 ns/op
BenchmarkConvertUnixLinuxerrZero
BenchmarkConvertUnixLinuxerrZero-32    	977733974	         1.489 ns/op

PiperOrigin-RevId: 379806801
This commit is contained in:
Zach Koopmans
2021-06-16 14:08:52 -07:00
committed by gVisor bot
parent 47149b7c42
commit 63b4f6e296
20 changed files with 676 additions and 382 deletions
Download Patch File Download Diff File Expand all files Collapse all files
pkg/abi/linux/BUILD
-1
View File
@@ -21,7 +21,6 @@ go_library(
"epoll.go",
"epoll_amd64.go",
"epoll_arm64.go",
"errors.go",
"errqueue.go",
"eventfd.go",
"exec.go",
pkg/abi/linux/errno/BUILD
+9
View File
@@ -0,0 +1,9 @@
load("//tools:defs.bzl", "go_library")
package(licenses = ["notice"])
go_library(
name = "errno",
srcs = ["errno.go"],
visibility = ["//visibility:public"],
)
pkg/abi/linux/errors.go → pkg/abi/linux/errno/errno.go
+8 -6
View File
@@ -12,10 +12,11 @@
// See the License for the specific language governing permissions and
// limitations under the License.
package linux
// Package errno holds errno codes for abi/linux.
package errno
// Errno represents a Linux errno value.
type Errno int
type Errno uint32
// Errno values from include/uapi/asm-generic/errno-base.h.
const (
@@ -60,8 +61,8 @@ const (
ENOLCK
ENOSYS
ENOTEMPTY
ELOOP //40
_ // Skip for EWOULDBLOCK = EAGAIN
ELOOP // 40
_ // Skip for EWOULDBLOCK = EAGAIN.
ENOMSG //42
EIDRM
ECHRNG
@@ -78,13 +79,13 @@ const (
ENOANO
EBADRQC
EBADSLT
_ // Skip for EDEADLOCK = EDEADLK
_ // Skip for EDEADLOCK = EDEADLK.
EBFONT
ENOSTR // 60
ENODATA
ETIME
ENOSR
ENONET
_ // Skip for ENOENT = ENONET.
ENOPKG
EREMOTE
ENOLINK
@@ -160,4 +161,5 @@ const (
const (
EWOULDBLOCK = EAGAIN
EDEADLOCK = EDEADLK
ENONET = ENOENT
)
pkg/errors/BUILD
+10
View File
@@ -0,0 +1,10 @@
load("//tools:defs.bzl", "go_library")
package(licenses = ["notice"])
go_library(
name = "errors",
srcs = ["errors.go"],
visibility = ["//:sandbox"],
deps = ["//pkg/abi/linux/errno"],
)
pkg/errors/errors.go
+40
View File
@@ -0,0 +1,40 @@
// Copyright 2021 The gVisor Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// Package errors holds the standardized error definition for gVisor.
package errors
import (
"gvisor.dev/gvisor/pkg/abi/linux/errno"
)
// Error represents a syscall errno with a descriptive message.
type Error struct {
errno errno.Errno
message string
}
// New creates a new *Error.
func New(err errno.Errno, message string) *Error {
return &Error{
errno: err,
message: message,
}
}
// Error implements error.Error.
func (e *Error) Error() string { return e.message }
// Errno returns the underlying errno.Errno value.
func (e *Error) Errno() errno.Errno { return e.errno }
pkg/linuxerr/BUILD → pkg/errors/linuxerr/BUILD
+6 -1
View File
@@ -6,7 +6,10 @@ go_library(
name = "linuxerr",
srcs = ["linuxerr.go"],
visibility = ["//visibility:public"],
deps = ["//pkg/abi/linux"],
deps = [
"//pkg/abi/linux/errno",
"//pkg/errors",
],
)
go_test(
@@ -14,6 +17,8 @@ go_test(
srcs = ["linuxerr_test.go"],
deps = [
":linuxerr",
"//pkg/abi/linux/errno",
"//pkg/errors",
"//pkg/syserror",
"@org_golang_x_sys//unix:go_default_library",
],
pkg/errors/linuxerr/linuxerr.go
+326
View File
@@ -0,0 +1,326 @@
// Copyright 2021 The gVisor Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License"),;
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// Package linuxerr contains syscall error codes exported as an error interface
// pointers. This allows for fast comparison and return operations comperable
// to unix.Errno constants.
package linuxerr
import (
"fmt"
"gvisor.dev/gvisor/pkg/abi/linux/errno"
"gvisor.dev/gvisor/pkg/errors"
)
const maxErrno uint32 = errno.EHWPOISON + 1
var (
EPERM = errors.New(errno.EPERM, "operation not permitted")
ENOENT = errors.New(errno.ENOENT, "no such file or directory")
ESRCH = errors.New(errno.ESRCH, "no such process")
EINTR = errors.New(errno.EINTR, "interrupted system call")
EIO = errors.New(errno.EIO, "I/O error")
ENXIO = errors.New(errno.ENXIO, "no such device or address")
E2BIG = errors.New(errno.E2BIG, "argument list too long")
ENOEXEC = errors.New(errno.ENOEXEC, "exec format error")
EBADF = errors.New(errno.EBADF, "bad file number")
ECHILD = errors.New(errno.ECHILD, "no child processes")
EAGAIN = errors.New(errno.EAGAIN, "try again")
ENOMEM = errors.New(errno.ENOMEM, "out of memory")
EACCES = errors.New(errno.EACCES, "permission denied")
EFAULT = errors.New(errno.EFAULT, "bad address")
ENOTBLK = errors.New(errno.ENOTBLK, "block device required")
EBUSY = errors.New(errno.EBUSY, "device or resource busy")
EEXIST = errors.New(errno.EEXIST, "file exists")
EXDEV = errors.New(errno.EXDEV, "cross-device link")
ENODEV = errors.New(errno.ENODEV, "no such device")
ENOTDIR = errors.New(errno.ENOTDIR, "not a directory")
EISDIR = errors.New(errno.EISDIR, "is a directory")
EINVAL = errors.New(errno.EINVAL, "invalid argument")
ENFILE = errors.New(errno.ENFILE, "file table overflow")
EMFILE = errors.New(errno.EMFILE, "too many open files")
ENOTTY = errors.New(errno.ENOTTY, "not a typewriter")
ETXTBSY = errors.New(errno.ETXTBSY, "text file busy")
EFBIG = errors.New(errno.EFBIG, "file too large")
ENOSPC = errors.New(errno.ENOSPC, "no space left on device")
ESPIPE = errors.New(errno.ESPIPE, "illegal seek")
EROFS = errors.New(errno.EROFS, "read-only file system")
EMLINK = errors.New(errno.EMLINK, "too many links")
EPIPE = errors.New(errno.EPIPE, "broken pipe")
EDOM = errors.New(errno.EDOM, "math argument out of domain of func")
ERANGE = errors.New(errno.ERANGE, "math result not representable")
// Errno values from include/uapi/asm-generic/errno.h.
EDEADLK = errors.New(errno.EDEADLK, "resource deadlock would occur")
ENAMETOOLONG = errors.New(errno.ENAMETOOLONG, "file name too long")
ENOLCK = errors.New(errno.ENOLCK, "no record locks available")
ENOSYS = errors.New(errno.ENOSYS, "invalid system call number")
ENOTEMPTY = errors.New(errno.ENOTEMPTY, "directory not empty")
ELOOP = errors.New(errno.ELOOP, "too many symbolic links encountered")
ENOMSG = errors.New(errno.ENOMSG, "no message of desired type")
EIDRM = errors.New(errno.EIDRM, "identifier removed")
ECHRNG = errors.New(errno.ECHRNG, "channel number out of range")
EL2NSYNC = errors.New(errno.EL2NSYNC, "level 2 not synchronized")
EL3HLT = errors.New(errno.EL3HLT, "level 3 halted")
EL3RST = errors.New(errno.EL3RST, "level 3 reset")
ELNRNG = errors.New(errno.ELNRNG, "link number out of range")
EUNATCH = errors.New(errno.EUNATCH, "protocol driver not attached")
ENOCSI = errors.New(errno.ENOCSI, "no CSI structure available")
EL2HLT = errors.New(errno.EL2HLT, "level 2 halted")
EBADE = errors.New(errno.EBADE, "invalid exchange")
EBADR = errors.New(errno.EBADR, "invalid request descriptor")
EXFULL = errors.New(errno.EXFULL, "exchange full")
ENOANO = errors.New(errno.ENOANO, "no anode")
EBADRQC = errors.New(errno.EBADRQC, "invalid request code")
EBADSLT = errors.New(errno.EBADSLT, "invalid slot")
EBFONT = errors.New(errno.EBFONT, "bad font file format")
ENOSTR = errors.New(errno.ENOSTR, "device not a stream")
ENODATA = errors.New(errno.ENODATA, "no data available")
ETIME = errors.New(errno.ETIME, "timer expired")
ENOSR = errors.New(errno.ENOSR, "out of streams resources")
ENOPKG = errors.New(errno.ENOPKG, "package not installed")
EREMOTE = errors.New(errno.EREMOTE, "object is remote")
ENOLINK = errors.New(errno.ENOLINK, "link has been severed")
EADV = errors.New(errno.EADV, "advertise error")
ESRMNT = errors.New(errno.ESRMNT, "srmount error")
ECOMM = errors.New(errno.ECOMM, "communication error on send")
EPROTO = errors.New(errno.EPROTO, "protocol error")
EMULTIHOP = errors.New(errno.EMULTIHOP, "multihop attempted")
EDOTDOT = errors.New(errno.EDOTDOT, "RFS specific error")
EBADMSG = errors.New(errno.EBADMSG, "not a data message")
EOVERFLOW = errors.New(errno.EOVERFLOW, "value too large for defined data type")
ENOTUNIQ = errors.New(errno.ENOTUNIQ, "name not unique on network")
EBADFD = errors.New(errno.EBADFD, "file descriptor in bad state")
EREMCHG = errors.New(errno.EREMCHG, "remote address changed")
ELIBACC = errors.New(errno.ELIBACC, "can not access a needed shared library")
ELIBBAD = errors.New(errno.ELIBBAD, "accessing a corrupted shared library")
ELIBSCN = errors.New(errno.ELIBSCN, ".lib section in a.out corrupted")
ELIBMAX = errors.New(errno.ELIBMAX, "attempting to link in too many shared libraries")
ELIBEXEC = errors.New(errno.ELIBEXEC, "cannot exec a shared library directly")
EILSEQ = errors.New(errno.EILSEQ, "illegal byte sequence")
ERESTART = errors.New(errno.ERESTART, "interrupted system call should be restarted")
ESTRPIPE = errors.New(errno.ESTRPIPE, "streams pipe error")
EUSERS = errors.New(errno.EUSERS, "too many users")
ENOTSOCK = errors.New(errno.ENOTSOCK, "socket operation on non-socket")
EDESTADDRREQ = errors.New(errno.EDESTADDRREQ, "destination address required")
EMSGSIZE = errors.New(errno.EMSGSIZE, "message too long")
EPROTOTYPE = errors.New(errno.EPROTOTYPE, "protocol wrong type for socket")
ENOPROTOOPT = errors.New(errno.ENOPROTOOPT, "protocol not available")
EPROTONOSUPPORT = errors.New(errno.EPROTONOSUPPORT, "protocol not supported")
ESOCKTNOSUPPORT = errors.New(errno.ESOCKTNOSUPPORT, "socket type not supported")
EOPNOTSUPP = errors.New(errno.EOPNOTSUPP, "operation not supported on transport endpoint")
EPFNOSUPPORT = errors.New(errno.EPFNOSUPPORT, "protocol family not supported")
EAFNOSUPPORT = errors.New(errno.EAFNOSUPPORT, "address family not supported by protocol")
EADDRINUSE = errors.New(errno.EADDRINUSE, "address already in use")
EADDRNOTAVAIL = errors.New(errno.EADDRNOTAVAIL, "cannot assign requested address")
ENETDOWN = errors.New(errno.ENETDOWN, "network is down")
ENETUNREACH = errors.New(errno.ENETUNREACH, "network is unreachable")
ENETRESET = errors.New(errno.ENETRESET, "network dropped connection because of reset")
ECONNABORTED = errors.New(errno.ECONNABORTED, "software caused connection abort")
ECONNRESET = errors.New(errno.ECONNRESET, "connection reset by peer")
ENOBUFS = errors.New(errno.ENOBUFS, "no buffer space available")
EISCONN = errors.New(errno.EISCONN, "transport endpoint is already connected")
ENOTCONN = errors.New(errno.ENOTCONN, "transport endpoint is not connected")
ESHUTDOWN = errors.New(errno.ESHUTDOWN, "cannot send after transport endpoint shutdown")
ETOOMANYREFS = errors.New(errno.ETOOMANYREFS, "too many references: cannot splice")
ETIMEDOUT = errors.New(errno.ETIMEDOUT, "connection timed out")
ECONNREFUSED = errors.New(errno.ECONNREFUSED, "connection refused")
EHOSTDOWN = errors.New(errno.EHOSTDOWN, "host is down")
EHOSTUNREACH = errors.New(errno.EHOSTUNREACH, "no route to host")
EALREADY = errors.New(errno.EALREADY, "operation already in progress")
EINPROGRESS = errors.New(errno.EINPROGRESS, "operation now in progress")
ESTALE = errors.New(errno.ESTALE, "stale file handle")
EUCLEAN = errors.New(errno.EUCLEAN, "structure needs cleaning")
ENOTNAM = errors.New(errno.ENOTNAM, "not a XENIX named type file")
ENAVAIL = errors.New(errno.ENAVAIL, "no XENIX semaphores available")
EISNAM = errors.New(errno.EISNAM, "is a named type file")
EREMOTEIO = errors.New(errno.EREMOTEIO, "remote I/O error")
EDQUOT = errors.New(errno.EDQUOT, "quota exceeded")
ENOMEDIUM = errors.New(errno.ENOMEDIUM, "no medium found")
EMEDIUMTYPE = errors.New(errno.EMEDIUMTYPE, "wrong medium type")
ECANCELED = errors.New(errno.ECANCELED, "operation Canceled")
ENOKEY = errors.New(errno.ENOKEY, "required key not available")
EKEYEXPIRED = errors.New(errno.EKEYEXPIRED, "key has expired")
EKEYREVOKED = errors.New(errno.EKEYREVOKED, "key has been revoked")
EKEYREJECTED = errors.New(errno.EKEYREJECTED, "key was rejected by service")
EOWNERDEAD = errors.New(errno.EOWNERDEAD, "owner died")
ENOTRECOVERABLE = errors.New(errno.ENOTRECOVERABLE, "state not recoverable")
ERFKILL = errors.New(errno.ERFKILL, "operation not possible due to RF-kill")
EHWPOISON = errors.New(errno.EHWPOISON, "memory page has hardware error")
// Errors equivalent to other errors.
EWOULDBLOCK = EAGAIN
EDEADLOCK = EDEADLK
ENONET = ENOENT
)
// A nil *errors.Error denotes no error and is placed at the 0 index of
// errorSlice. Thus, any other empty index should not be nil or a valid error.
// This marks that index as an invalid error so any comparison to nil or a
// valid linuxerr fails.
var errNotValidError = errors.New(errno.Errno(maxErrno), "not a valid error")
// The following errorSlice holds errors by errno for fast translation between
// errnos (especially uint32(sycall.Errno)) and *Error.
var errorSlice = []*errors.Error{
// Errno values from include/uapi/asm-generic/errno-base.h.
errno.NOERRNO: nil,
errno.EPERM: EPERM,
errno.ENOENT: ENOENT,
errno.ESRCH: ESRCH,
errno.EINTR: EINTR,
errno.EIO: EIO,
errno.ENXIO: ENXIO,
errno.E2BIG: E2BIG,
errno.ENOEXEC: ENOEXEC,
errno.EBADF: EBADF,
errno.ECHILD: ECHILD,
errno.EAGAIN: EAGAIN,
errno.ENOMEM: ENOMEM,
errno.EACCES: EACCES,
errno.EFAULT: EFAULT,
errno.ENOTBLK: ENOTBLK,
errno.EBUSY: EBUSY,
errno.EEXIST: EEXIST,
errno.EXDEV: EXDEV,
errno.ENODEV: ENODEV,
errno.ENOTDIR: ENOTDIR,
errno.EISDIR: EISDIR,
errno.EINVAL: EINVAL,
errno.ENFILE: ENFILE,
errno.EMFILE: EMFILE,
errno.ENOTTY: ENOTTY,
errno.ETXTBSY: ETXTBSY,
errno.EFBIG: EFBIG,
errno.ENOSPC: ENOSPC,
errno.ESPIPE: ESPIPE,
errno.EROFS: EROFS,
errno.EMLINK: EMLINK,
errno.EPIPE: EPIPE,
errno.EDOM: EDOM,
errno.ERANGE: ERANGE,
// Errno values from include/uapi/asm-generic/errno.h.
errno.EDEADLK: EDEADLK,
errno.ENAMETOOLONG: ENAMETOOLONG,
errno.ENOLCK: ENOLCK,
errno.ENOSYS: ENOSYS,
errno.ENOTEMPTY: ENOTEMPTY,
errno.ELOOP: ELOOP,
errno.ELOOP + 1: errNotValidError, // No valid errno between ELOOP and ENOMSG.
errno.ENOMSG: ENOMSG,
errno.EIDRM: EIDRM,
errno.ECHRNG: ECHRNG,
errno.EL2NSYNC: EL2NSYNC,
errno.EL3HLT: EL3HLT,
errno.EL3RST: EL3RST,
errno.ELNRNG: ELNRNG,
errno.EUNATCH: EUNATCH,
errno.ENOCSI: ENOCSI,
errno.EL2HLT: EL2HLT,
errno.EBADE: EBADE,
errno.EBADR: EBADR,
errno.EXFULL: EXFULL,
errno.ENOANO: ENOANO,
errno.EBADRQC: EBADRQC,
errno.EBADSLT: EBADSLT,
errno.EBADSLT + 1: errNotValidError, // No valid errno between EBADSLT and ENOPKG.
errno.EBFONT: EBFONT,
errno.ENOSTR: ENOSTR,
errno.ENODATA: ENODATA,
errno.ETIME: ETIME,
errno.ENOSR: ENOSR,
errno.ENOSR + 1: errNotValidError, // No valid errno betweeen ENOSR and ENOPKG.
errno.ENOPKG: ENOPKG,
errno.EREMOTE: EREMOTE,
errno.ENOLINK: ENOLINK,
errno.EADV: EADV,
errno.ESRMNT: ESRMNT,
errno.ECOMM: ECOMM,
errno.EPROTO: EPROTO,
errno.EMULTIHOP: EMULTIHOP,
errno.EDOTDOT: EDOTDOT,
errno.EBADMSG: EBADMSG,
errno.EOVERFLOW: EOVERFLOW,
errno.ENOTUNIQ: ENOTUNIQ,
errno.EBADFD: EBADFD,
errno.EREMCHG: EREMCHG,
errno.ELIBACC: ELIBACC,
errno.ELIBBAD: ELIBBAD,
errno.ELIBSCN: ELIBSCN,
errno.ELIBMAX: ELIBMAX,
errno.ELIBEXEC: ELIBEXEC,
errno.EILSEQ: EILSEQ,
errno.ERESTART: ERESTART,
errno.ESTRPIPE: ESTRPIPE,
errno.EUSERS: EUSERS,
errno.ENOTSOCK: ENOTSOCK,
errno.EDESTADDRREQ: EDESTADDRREQ,
errno.EMSGSIZE: EMSGSIZE,
errno.EPROTOTYPE: EPROTOTYPE,
errno.ENOPROTOOPT: ENOPROTOOPT,
errno.EPROTONOSUPPORT: EPROTONOSUPPORT,
errno.ESOCKTNOSUPPORT: ESOCKTNOSUPPORT,
errno.EOPNOTSUPP: EOPNOTSUPP,
errno.EPFNOSUPPORT: EPFNOSUPPORT,
errno.EAFNOSUPPORT: EAFNOSUPPORT,
errno.EADDRINUSE: EADDRINUSE,
errno.EADDRNOTAVAIL: EADDRNOTAVAIL,
errno.ENETDOWN: ENETDOWN,
errno.ENETUNREACH: ENETUNREACH,
errno.ENETRESET: ENETRESET,
errno.ECONNABORTED: ECONNABORTED,
errno.ECONNRESET: ECONNRESET,
errno.ENOBUFS: ENOBUFS,
errno.EISCONN: EISCONN,
errno.ENOTCONN: ENOTCONN,
errno.ESHUTDOWN: ESHUTDOWN,
errno.ETOOMANYREFS: ETOOMANYREFS,
errno.ETIMEDOUT: ETIMEDOUT,
errno.ECONNREFUSED: ECONNREFUSED,
errno.EHOSTDOWN: EHOSTDOWN,
errno.EHOSTUNREACH: EHOSTUNREACH,
errno.EALREADY: EALREADY,
errno.EINPROGRESS: EINPROGRESS,
errno.ESTALE: ESTALE,
errno.EUCLEAN: EUCLEAN,
errno.ENOTNAM: ENOTNAM,
errno.ENAVAIL: ENAVAIL,
errno.EISNAM: EISNAM,
errno.EREMOTEIO: EREMOTEIO,
errno.EDQUOT: EDQUOT,
errno.ENOMEDIUM: ENOMEDIUM,
errno.EMEDIUMTYPE: EMEDIUMTYPE,
errno.ECANCELED: ECANCELED,
errno.ENOKEY: ENOKEY,
errno.EKEYEXPIRED: EKEYEXPIRED,
errno.EKEYREVOKED: EKEYREVOKED,
errno.EKEYREJECTED: EKEYREJECTED,
errno.EOWNERDEAD: EOWNERDEAD,
errno.ENOTRECOVERABLE: ENOTRECOVERABLE,
errno.ERFKILL: ERFKILL,
errno.EHWPOISON: EHWPOISON,
}
// ErrorFromErrno gets an error from the list and panics if an invalid entry is requested.
func ErrorFromErrno(e errno.Errno) *errors.Error {
err := errorSlice[e]
// Done this way because a single comparison in benchmarks is 2-3 faster
// than something like ( if err == nil && err > 0 ).
if err != errNotValidError {
return err
}
panic(fmt.Sprintf("invalid error requested with errno: %d", e))
}
pkg/linuxerr/linuxerr_test.go → pkg/errors/linuxerr/linuxerr_test.go
+91 -10
View File
@@ -16,34 +16,37 @@ package syserror_test
import (
"errors"
"syscall"
"testing"
"golang.org/x/sys/unix"
"gvisor.dev/gvisor/pkg/linuxerr"
"gvisor.dev/gvisor/pkg/abi/linux/errno"
gErrors "gvisor.dev/gvisor/pkg/errors"
"gvisor.dev/gvisor/pkg/errors/linuxerr"
"gvisor.dev/gvisor/pkg/syserror"
)
var globalError error
func BenchmarkAssignErrno(b *testing.B) {
func BenchmarkAssignUnix(b *testing.B) {
for i := b.N; i > 0; i-- {
globalError = unix.EINVAL
}
}
func BenchmarkLinuxerrAssignError(b *testing.B) {
func BenchmarkAssignLinuxerr(b *testing.B) {
for i := b.N; i > 0; i-- {
globalError = linuxerr.EINVAL
}
}
func BenchmarkAssignSyserrorError(b *testing.B) {
func BenchmarkAssignSyserror(b *testing.B) {
for i := b.N; i > 0; i-- {
globalError = syserror.EINVAL
}
}
func BenchmarkCompareErrno(b *testing.B) {
func BenchmarkCompareUnix(b *testing.B) {
globalError = unix.EAGAIN
j := 0
for i := b.N; i > 0; i-- {
@@ -53,7 +56,7 @@ func BenchmarkCompareErrno(b *testing.B) {
}
}
func BenchmarkCompareLinuxerrError(b *testing.B) {
func BenchmarkCompareLinuxerr(b *testing.B) {
globalError = linuxerr.E2BIG
j := 0
for i := b.N; i > 0; i-- {
@@ -63,7 +66,7 @@ func BenchmarkCompareLinuxerrError(b *testing.B) {
}
}
func BenchmarkCompareSyserrorError(b *testing.B) {
func BenchmarkCompareSyserror(b *testing.B) {
globalError = syserror.EAGAIN
j := 0
for i := b.N; i > 0; i-- {
@@ -73,7 +76,7 @@ func BenchmarkCompareSyserrorError(b *testing.B) {
}
}
func BenchmarkSwitchErrno(b *testing.B) {
func BenchmarkSwitchUnix(b *testing.B) {
globalError = unix.EPERM
j := 0
for i := b.N; i > 0; i-- {
@@ -88,7 +91,7 @@ func BenchmarkSwitchErrno(b *testing.B) {
}
}
func BenchmarkSwitchLinuxerrError(b *testing.B) {
func BenchmarkSwitchLinuxerr(b *testing.B) {
globalError = linuxerr.EPERM
j := 0
for i := b.N; i > 0; i-- {
@@ -103,7 +106,7 @@ func BenchmarkSwitchLinuxerrError(b *testing.B) {
}
}
func BenchmarkSwitchSyserrorError(b *testing.B) {
func BenchmarkSwitchSyserror(b *testing.B) {
globalError = syserror.EPERM
j := 0
for i := b.N; i > 0; i-- {
@@ -118,6 +121,52 @@ func BenchmarkSwitchSyserrorError(b *testing.B) {
}
}
func BenchmarkReturnUnix(b *testing.B) {
var localError error
f := func() error {
return unix.EINVAL
}
for i := b.N; i > 0; i-- {
localError = f()
}
if localError != nil {
return
}
}
func BenchmarkReturnLinuxerr(b *testing.B) {
var localError error
f := func() error {
return linuxerr.EINVAL
}
for i := b.N; i > 0; i-- {
localError = f()
}
if localError != nil {
return
}
}
func BenchmarkConvertUnixLinuxerr(b *testing.B) {
var localError error
for i := b.N; i > 0; i-- {
localError = linuxerr.ErrorFromErrno(errno.Errno(unix.EINVAL))
}
if localError != nil {
return
}
}
func BenchmarkConvertUnixLinuxerrZero(b *testing.B) {
var localError error
for i := b.N; i > 0; i-- {
localError = linuxerr.ErrorFromErrno(errno.Errno(0))
}
if localError != nil {
return
}
}
type translationTestTable struct {
fn string
errIn error
@@ -162,3 +211,35 @@ func TestErrorTranslation(t *testing.T) {
}
}
}
func TestSyscallErrnoToErrors(t *testing.T) {
for _, tc := range []struct {
errno syscall.Errno
err *gErrors.Error
}{
{errno: syscall.EACCES, err: linuxerr.EACCES},
{errno: syscall.EAGAIN, err: linuxerr.EAGAIN},
{errno: syscall.EBADF, err: linuxerr.EBADF},
{errno: syscall.EBUSY, err: linuxerr.EBUSY},
{errno: syscall.EDOM, err: linuxerr.EDOM},
{errno: syscall.EEXIST, err: linuxerr.EEXIST},
{errno: syscall.EFAULT, err: linuxerr.EFAULT},
{errno: syscall.EFBIG, err: linuxerr.EFBIG},
{errno: syscall.EINTR, err: linuxerr.EINTR},
{errno: syscall.EINVAL, err: linuxerr.EINVAL},
{errno: syscall.EIO, err: linuxerr.EIO},
{errno: syscall.ENOTDIR, err: linuxerr.ENOTDIR},
{errno: syscall.ENOTTY, err: linuxerr.ENOTTY},
{errno: syscall.EPERM, err: linuxerr.EPERM},
{errno: syscall.EPIPE, err: linuxerr.EPIPE},
{errno: syscall.ESPIPE, err: linuxerr.ESPIPE},
{errno: syscall.EWOULDBLOCK, err: linuxerr.EAGAIN},
} {
t.Run(tc.errno.Error(), func(t *testing.T) {
e := linuxerr.ErrorFromErrno(errno.Errno(tc.errno))
if e != tc.err {
t.Fatalf("Mismatch errors: want: %+v (%d) got: %+v %d", tc.err, tc.err.Errno(), e, e.Errno())
}
})
}
}
pkg/linuxerr/linuxerr.go
-184
View File
@@ -1,184 +0,0 @@
// Copyright 2021 The gVisor Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// Package linuxerr contains syscall error codes exported as an error interface
// pointers. This allows for fast comparison and return operations comperable
// to unix.Errno constants.
package linuxerr
import (
"gvisor.dev/gvisor/pkg/abi/linux"
)
// Error represents a syscall errno with a descriptive message.
type Error struct {
errno linux.Errno
message string
}
func new(err linux.Errno, message string) *Error {
return &Error{
errno: err,
message: message,
}
}
// Error implements error.Error.
func (e *Error) Error() string { return e.message }
// Errno returns the underlying linux.Errno value.
func (e *Error) Errno() linux.Errno { return e.errno }
// The following varables have the same meaning as their errno equivalent.
// Errno values from include/uapi/asm-generic/errno-base.h.
var (
EPERM = new(linux.EPERM, "operation not permitted")
ENOENT = new(linux.ENOENT, "no such file or directory")
ESRCH = new(linux.ESRCH, "no such process")
EINTR = new(linux.EINTR, "interrupted system call")
EIO = new(linux.EIO, "I/O error")
ENXIO = new(linux.ENXIO, "no such device or address")
E2BIG = new(linux.E2BIG, "argument list too long")
ENOEXEC = new(linux.ENOEXEC, "exec format error")
EBADF = new(linux.EBADF, "bad file number")
ECHILD = new(linux.ECHILD, "no child processes")
EAGAIN = new(linux.EAGAIN, "try again")
ENOMEM = new(linux.ENOMEM, "out of memory")
EACCES = new(linux.EACCES, "permission denied")
EFAULT = new(linux.EFAULT, "bad address")
ENOTBLK = new(linux.ENOTBLK, "block device required")
EBUSY = new(linux.EBUSY, "device or resource busy")
EEXIST = new(linux.EEXIST, "file exists")
EXDEV = new(linux.EXDEV, "cross-device link")
ENODEV = new(linux.ENODEV, "no such device")
ENOTDIR = new(linux.ENOTDIR, "not a directory")
EISDIR = new(linux.EISDIR, "is a directory")
EINVAL = new(linux.EINVAL, "invalid argument")
ENFILE = new(linux.ENFILE, "file table overflow")
EMFILE = new(linux.EMFILE, "too many open files")
ENOTTY = new(linux.ENOTTY, "not a typewriter")
ETXTBSY = new(linux.ETXTBSY, "text file busy")
EFBIG = new(linux.EFBIG, "file too large")
ENOSPC = new(linux.ENOSPC, "no space left on device")
ESPIPE = new(linux.ESPIPE, "illegal seek")
EROFS = new(linux.EROFS, "read-only file system")
EMLINK = new(linux.EMLINK, "too many links")
EPIPE = new(linux.EPIPE, "broken pipe")
EDOM = new(linux.EDOM, "math argument out of domain of func")
ERANGE = new(linux.ERANGE, "math result not representable")
)
// Errno values from include/uapi/asm-generic/errno.h.
var (
EDEADLK = new(linux.EDEADLK, "resource deadlock would occur")
ENAMETOOLONG = new(linux.ENAMETOOLONG, "file name too long")
ENOLCK = new(linux.ENOLCK, "no record locks available")
ENOSYS = new(linux.ENOSYS, "invalid system call number")
ENOTEMPTY = new(linux.ENOTEMPTY, "directory not empty")
ELOOP = new(linux.ELOOP, "too many symbolic links encountered")
EWOULDBLOCK = new(linux.EWOULDBLOCK, "operation would block")
ENOMSG = new(linux.ENOMSG, "no message of desired type")
EIDRM = new(linux.EIDRM, "identifier removed")
ECHRNG = new(linux.ECHRNG, "channel number out of range")
EL2NSYNC = new(linux.EL2NSYNC, "level 2 not synchronized")
EL3HLT = new(linux.EL3HLT, "level 3 halted")
EL3RST = new(linux.EL3RST, "level 3 reset")
ELNRNG = new(linux.ELNRNG, "link number out of range")
EUNATCH = new(linux.EUNATCH, "protocol driver not attached")
ENOCSI = new(linux.ENOCSI, "no CSI structure available")
EL2HLT = new(linux.EL2HLT, "level 2 halted")
EBADE = new(linux.EBADE, "invalid exchange")
EBADR = new(linux.EBADR, "invalid request descriptor")
EXFULL = new(linux.EXFULL, "exchange full")
ENOANO = new(linux.ENOANO, "no anode")
EBADRQC = new(linux.EBADRQC, "invalid request code")
EBADSLT = new(linux.EBADSLT, "invalid slot")
EDEADLOCK = new(linux.EDEADLOCK, EDEADLK.message)
EBFONT = new(linux.EBFONT, "bad font file format")
ENOSTR = new(linux.ENOSTR, "device not a stream")
ENODATA = new(linux.ENODATA, "no data available")
ETIME = new(linux.ETIME, "timer expired")
ENOSR = new(linux.ENOSR, "out of streams resources")
ENONET = new(linux.ENOENT, "machine is not on the network")
ENOPKG = new(linux.ENOPKG, "package not installed")
EREMOTE = new(linux.EREMOTE, "object is remote")
ENOLINK = new(linux.ENOLINK, "link has been severed")
EADV = new(linux.EADV, "advertise error")
ESRMNT = new(linux.ESRMNT, "srmount error")
ECOMM = new(linux.ECOMM, "communication error on send")
EPROTO = new(linux.EPROTO, "protocol error")
EMULTIHOP = new(linux.EMULTIHOP, "multihop attempted")
EDOTDOT = new(linux.EDOTDOT, "RFS specific error")
EBADMSG = new(linux.EBADMSG, "not a data message")
EOVERFLOW = new(linux.EOVERFLOW, "value too large for defined data type")
ENOTUNIQ = new(linux.ENOTUNIQ, "name not unique on network")
EBADFD = new(linux.EBADFD, "file descriptor in bad state")
EREMCHG = new(linux.EREMCHG, "remote address changed")
ELIBACC = new(linux.ELIBACC, "can not access a needed shared library")
ELIBBAD = new(linux.ELIBBAD, "accessing a corrupted shared library")
ELIBSCN = new(linux.ELIBSCN, ".lib section in a.out corrupted")
ELIBMAX = new(linux.ELIBMAX, "attempting to link in too many shared libraries")
ELIBEXEC = new(linux.ELIBEXEC, "cannot exec a shared library directly")
EILSEQ = new(linux.EILSEQ, "illegal byte sequence")
ERESTART = new(linux.ERESTART, "interrupted system call should be restarted")
ESTRPIPE = new(linux.ESTRPIPE, "streams pipe error")
EUSERS = new(linux.EUSERS, "too many users")
ENOTSOCK = new(linux.ENOTSOCK, "socket operation on non-socket")
EDESTADDRREQ = new(linux.EDESTADDRREQ, "destination address required")
EMSGSIZE = new(linux.EMSGSIZE, "message too long")
EPROTOTYPE = new(linux.EPROTOTYPE, "protocol wrong type for socket")
ENOPROTOOPT = new(linux.ENOPROTOOPT, "protocol not available")
EPROTONOSUPPORT = new(linux.EPROTONOSUPPORT, "protocol not supported")
ESOCKTNOSUPPORT = new(linux.ESOCKTNOSUPPORT, "socket type not supported")
EOPNOTSUPP = new(linux.EOPNOTSUPP, "operation not supported on transport endpoint")
EPFNOSUPPORT = new(linux.EPFNOSUPPORT, "protocol family not supported")
EAFNOSUPPORT = new(linux.EAFNOSUPPORT, "address family not supported by protocol")
EADDRINUSE = new(linux.EADDRINUSE, "address already in use")
EADDRNOTAVAIL = new(linux.EADDRNOTAVAIL, "cannot assign requested address")
ENETDOWN = new(linux.ENETDOWN, "network is down")
ENETUNREACH = new(linux.ENETUNREACH, "network is unreachable")
ENETRESET = new(linux.ENETRESET, "network dropped connection because of reset")
ECONNABORTED = new(linux.ECONNABORTED, "software caused connection abort")
ECONNRESET = new(linux.ECONNRESET, "connection reset by peer")
ENOBUFS = new(linux.ENOBUFS, "no buffer space available")
EISCONN = new(linux.EISCONN, "transport endpoint is already connected")
ENOTCONN = new(linux.ENOTCONN, "transport endpoint is not connected")
ESHUTDOWN = new(linux.ESHUTDOWN, "cannot send after transport endpoint shutdown")
ETOOMANYREFS = new(linux.ETOOMANYREFS, "too many references: cannot splice")
ETIMEDOUT = new(linux.ETIMEDOUT, "connection timed out")
ECONNREFUSED = new(linux.ECONNREFUSED, "connection refused")
EHOSTDOWN = new(linux.EHOSTDOWN, "host is down")
EHOSTUNREACH = new(linux.EHOSTUNREACH, "no route to host")
EALREADY = new(linux.EALREADY, "operation already in progress")
EINPROGRESS = new(linux.EINPROGRESS, "operation now in progress")
ESTALE = new(linux.ESTALE, "stale file handle")
EUCLEAN = new(linux.EUCLEAN, "structure needs cleaning")
ENOTNAM = new(linux.ENOTNAM, "not a XENIX named type file")
ENAVAIL = new(linux.ENAVAIL, "no XENIX semaphores available")
EISNAM = new(linux.EISNAM, "is a named type file")
EREMOTEIO = new(linux.EREMOTEIO, "remote I/O error")
EDQUOT = new(linux.EDQUOT, "quota exceeded")
ENOMEDIUM = new(linux.ENOMEDIUM, "no medium found")
EMEDIUMTYPE = new(linux.EMEDIUMTYPE, "wrong medium type")
ECANCELED = new(linux.ECANCELED, "operation Canceled")
ENOKEY = new(linux.ENOKEY, "required key not available")
EKEYEXPIRED = new(linux.EKEYEXPIRED, "key has expired")
EKEYREVOKED = new(linux.EKEYREVOKED, "key has been revoked")
EKEYREJECTED = new(linux.EKEYREJECTED, "key was rejected by service")
EOWNERDEAD = new(linux.EOWNERDEAD, "owner died")
ENOTRECOVERABLE = new(linux.ENOTRECOVERABLE, "state not recoverable")
ERFKILL = new(linux.ERFKILL, "operation not possible due to RF-kill")
EHWPOISON = new(linux.EHWPOISON, "memory page has hardware error")
)
pkg/sentry/kernel/BUILD
+1
View File
@@ -218,6 +218,7 @@ go_library(
":uncaught_signal_go_proto",
"//pkg/abi",
"//pkg/abi/linux",
"//pkg/abi/linux/errno",
"//pkg/amutex",
"//pkg/bits",
"//pkg/bpf",
pkg/sentry/kernel/task_image.go
+2 -2
View File
@@ -17,7 +17,7 @@ package kernel
import (
"fmt"
"gvisor.dev/gvisor/pkg/abi/linux"
"gvisor.dev/gvisor/pkg/abi/linux/errno"
"gvisor.dev/gvisor/pkg/context"
"gvisor.dev/gvisor/pkg/hostarch"
"gvisor.dev/gvisor/pkg/sentry/arch"
@@ -27,7 +27,7 @@ import (
"gvisor.dev/gvisor/pkg/syserr"
)
var errNoSyscalls = syserr.New("no syscall table found", linux.ENOEXEC)
var errNoSyscalls = syserr.New("no syscall table found", errno.ENOEXEC)
// Auxmap contains miscellaneous data for the task.
type Auxmap map[string]interface{}
pkg/sentry/loader/BUILD
+1
View File
@@ -17,6 +17,7 @@ go_library(
deps = [
"//pkg/abi",
"//pkg/abi/linux",
"//pkg/abi/linux/errno",
"//pkg/context",
"//pkg/cpuid",
"//pkg/hostarch",
pkg/sentry/loader/loader.go
+2 -1
View File
@@ -23,6 +23,7 @@ import (
"gvisor.dev/gvisor/pkg/abi"
"gvisor.dev/gvisor/pkg/abi/linux"
"gvisor.dev/gvisor/pkg/abi/linux/errno"
"gvisor.dev/gvisor/pkg/context"
"gvisor.dev/gvisor/pkg/cpuid"
"gvisor.dev/gvisor/pkg/hostarch"
@@ -237,7 +238,7 @@ func Load(ctx context.Context, args LoadArgs, extraAuxv []arch.AuxEntry, vdso *V
// loaded.end is available for its use.
e, ok := loaded.end.RoundUp()
if !ok {
return 0, nil, "", syserr.NewDynamic(fmt.Sprintf("brk overflows: %#x", loaded.end), linux.ENOEXEC)
return 0, nil, "", syserr.NewDynamic(fmt.Sprintf("brk overflows: %#x", loaded.end), errno.ENOEXEC)
}
args.MemoryManager.BrkSetup(ctx, e)
pkg/sentry/socket/netlink/BUILD
+1
View File
@@ -14,6 +14,7 @@ go_library(
visibility = ["//pkg/sentry:internal"],
deps = [
"//pkg/abi/linux",
"//pkg/abi/linux/errno",
"//pkg/bits",
"//pkg/context",
"//pkg/hostarch",
pkg/sentry/socket/netlink/socket.go
+2 -1
View File
@@ -20,6 +20,7 @@ import (
"math"
"gvisor.dev/gvisor/pkg/abi/linux"
"gvisor.dev/gvisor/pkg/abi/linux/errno"
"gvisor.dev/gvisor/pkg/context"
"gvisor.dev/gvisor/pkg/hostarch"
"gvisor.dev/gvisor/pkg/marshal"
@@ -56,7 +57,7 @@ const (
maxSendBufferSize = 4 << 20 // 4MB
)
var errNoFilter = syserr.New("no filter attached", linux.ENOENT)
var errNoFilter = syserr.New("no filter attached", errno.ENOENT)
// netlinkSocketDevice is the netlink socket virtual device.
var netlinkSocketDevice = device.NewAnonDevice()
pkg/sentry/socket/netstack/BUILD
+1
View File
@@ -19,6 +19,7 @@ go_library(
],
deps = [
"//pkg/abi/linux",
"//pkg/abi/linux/errno",
"//pkg/context",
"//pkg/hostarch",
"//pkg/log",
pkg/sentry/socket/netstack/netstack.go
+2 -1
View File
@@ -36,6 +36,7 @@ import (
"golang.org/x/sys/unix"
"gvisor.dev/gvisor/pkg/abi/linux"
"gvisor.dev/gvisor/pkg/abi/linux/errno"
"gvisor.dev/gvisor/pkg/context"
"gvisor.dev/gvisor/pkg/hostarch"
"gvisor.dev/gvisor/pkg/log"
@@ -289,7 +290,7 @@ const DefaultTTL = 64
const sizeOfInt32 int = 4
var errStackType = syserr.New("expected but did not receive a netstack.Stack", linux.EINVAL)
var errStackType = syserr.New("expected but did not receive a netstack.Stack", errno.EINVAL)
// commonEndpoint represents the intersection of a tcpip.Endpoint and a
// transport.Endpoint.
pkg/syserr/BUILD
+1 -1
View File
@@ -11,7 +11,7 @@ go_library(
],
visibility = ["//visibility:public"],
deps = [
"//pkg/abi/linux",
"//pkg/abi/linux/errno",
"//pkg/syserror",
"//pkg/tcpip",
"@org_golang_x_sys//unix:go_default_library",
pkg/syserr/netstack.go
+28 -28
View File
@@ -17,7 +17,7 @@ package syserr
import (
"fmt"
"gvisor.dev/gvisor/pkg/abi/linux"
"gvisor.dev/gvisor/pkg/abi/linux/errno"
"gvisor.dev/gvisor/pkg/tcpip"
)
@@ -25,33 +25,33 @@ import (
// Mapping for tcpip.Error types.
var (
ErrUnknownProtocol = New((&tcpip.ErrUnknownProtocol{}).String(), linux.EINVAL)
ErrUnknownNICID = New((&tcpip.ErrUnknownNICID{}).String(), linux.ENODEV)
ErrUnknownDevice = New((&tcpip.ErrUnknownDevice{}).String(), linux.ENODEV)
ErrUnknownProtocolOption = New((&tcpip.ErrUnknownProtocolOption{}).String(), linux.ENOPROTOOPT)
ErrDuplicateNICID = New((&tcpip.ErrDuplicateNICID{}).String(), linux.EEXIST)
ErrDuplicateAddress = New((&tcpip.ErrDuplicateAddress{}).String(), linux.EEXIST)
ErrAlreadyBound = New((&tcpip.ErrAlreadyBound{}).String(), linux.EINVAL)
ErrInvalidEndpointState = New((&tcpip.ErrInvalidEndpointState{}).String(), linux.EINVAL)
ErrAlreadyConnecting = New((&tcpip.ErrAlreadyConnecting{}).String(), linux.EALREADY)
ErrNoPortAvailable = New((&tcpip.ErrNoPortAvailable{}).String(), linux.EAGAIN)
ErrPortInUse = New((&tcpip.ErrPortInUse{}).String(), linux.EADDRINUSE)
ErrBadLocalAddress = New((&tcpip.ErrBadLocalAddress{}).String(), linux.EADDRNOTAVAIL)
ErrClosedForSend = New((&tcpip.ErrClosedForSend{}).String(), linux.EPIPE)
ErrClosedForReceive = New((&tcpip.ErrClosedForReceive{}).String(), linux.NOERRNO)
ErrTimeout = New((&tcpip.ErrTimeout{}).String(), linux.ETIMEDOUT)
ErrAborted = New((&tcpip.ErrAborted{}).String(), linux.EPIPE)
ErrConnectStarted = New((&tcpip.ErrConnectStarted{}).String(), linux.EINPROGRESS)
ErrDestinationRequired = New((&tcpip.ErrDestinationRequired{}).String(), linux.EDESTADDRREQ)
ErrNotSupported = New((&tcpip.ErrNotSupported{}).String(), linux.EOPNOTSUPP)
ErrQueueSizeNotSupported = New((&tcpip.ErrQueueSizeNotSupported{}).String(), linux.ENOTTY)
ErrNoSuchFile = New((&tcpip.ErrNoSuchFile{}).String(), linux.ENOENT)
ErrInvalidOptionValue = New((&tcpip.ErrInvalidOptionValue{}).String(), linux.EINVAL)
ErrBroadcastDisabled = New((&tcpip.ErrBroadcastDisabled{}).String(), linux.EACCES)
ErrNotPermittedNet = New((&tcpip.ErrNotPermitted{}).String(), linux.EPERM)
ErrBadBuffer = New((&tcpip.ErrBadBuffer{}).String(), linux.EFAULT)
ErrMalformedHeader = New((&tcpip.ErrMalformedHeader{}).String(), linux.EINVAL)
ErrInvalidPortRange = New((&tcpip.ErrInvalidPortRange{}).String(), linux.EINVAL)
ErrUnknownProtocol = New((&tcpip.ErrUnknownProtocol{}).String(), errno.EINVAL)
ErrUnknownNICID = New((&tcpip.ErrUnknownNICID{}).String(), errno.ENODEV)
ErrUnknownDevice = New((&tcpip.ErrUnknownDevice{}).String(), errno.ENODEV)
ErrUnknownProtocolOption = New((&tcpip.ErrUnknownProtocolOption{}).String(), errno.ENOPROTOOPT)
ErrDuplicateNICID = New((&tcpip.ErrDuplicateNICID{}).String(), errno.EEXIST)
ErrDuplicateAddress = New((&tcpip.ErrDuplicateAddress{}).String(), errno.EEXIST)
ErrAlreadyBound = New((&tcpip.ErrAlreadyBound{}).String(), errno.EINVAL)
ErrInvalidEndpointState = New((&tcpip.ErrInvalidEndpointState{}).String(), errno.EINVAL)
ErrAlreadyConnecting = New((&tcpip.ErrAlreadyConnecting{}).String(), errno.EALREADY)
ErrNoPortAvailable = New((&tcpip.ErrNoPortAvailable{}).String(), errno.EAGAIN)
ErrPortInUse = New((&tcpip.ErrPortInUse{}).String(), errno.EADDRINUSE)
ErrBadLocalAddress = New((&tcpip.ErrBadLocalAddress{}).String(), errno.EADDRNOTAVAIL)
ErrClosedForSend = New((&tcpip.ErrClosedForSend{}).String(), errno.EPIPE)
ErrClosedForReceive = New((&tcpip.ErrClosedForReceive{}).String(), errno.NOERRNO)
ErrTimeout = New((&tcpip.ErrTimeout{}).String(), errno.ETIMEDOUT)
ErrAborted = New((&tcpip.ErrAborted{}).String(), errno.EPIPE)
ErrConnectStarted = New((&tcpip.ErrConnectStarted{}).String(), errno.EINPROGRESS)
ErrDestinationRequired = New((&tcpip.ErrDestinationRequired{}).String(), errno.EDESTADDRREQ)
ErrNotSupported = New((&tcpip.ErrNotSupported{}).String(), errno.EOPNOTSUPP)
ErrQueueSizeNotSupported = New((&tcpip.ErrQueueSizeNotSupported{}).String(), errno.ENOTTY)
ErrNoSuchFile = New((&tcpip.ErrNoSuchFile{}).String(), errno.ENOENT)
ErrInvalidOptionValue = New((&tcpip.ErrInvalidOptionValue{}).String(), errno.EINVAL)
ErrBroadcastDisabled = New((&tcpip.ErrBroadcastDisabled{}).String(), errno.EACCES)
ErrNotPermittedNet = New((&tcpip.ErrNotPermitted{}).String(), errno.EPERM)
ErrBadBuffer = New((&tcpip.ErrBadBuffer{}).String(), errno.EFAULT)
ErrMalformedHeader = New((&tcpip.ErrMalformedHeader{}).String(), errno.EINVAL)
ErrInvalidPortRange = New((&tcpip.ErrInvalidPortRange{}).String(), errno.EINVAL)
)
// TranslateNetstackError converts an error from the tcpip package to a sentry
pkg/syserr/syserr.go
+145 -146
View File
@@ -21,7 +21,7 @@ import (
"fmt"
"golang.org/x/sys/unix"
"gvisor.dev/gvisor/pkg/abi/linux"
"gvisor.dev/gvisor/pkg/abi/linux/errno"
"gvisor.dev/gvisor/pkg/syserror"
)
@@ -31,26 +31,25 @@ type Error struct {
message string
// noTranslation indicates that this Error cannot be translated to a
// linux.Errno.
// errno.Errno.
noTranslation bool
// errno is the linux.Errno this Error should be translated to.
errno linux.Errno
// errno is the errno.Errno this Error should be translated to.
errno errno.Errno
}
// New creates a new Error and adds a translation for it.
//
// New must only be called at init.
func New(message string, linuxTranslation linux.Errno) *Error {
func New(message string, linuxTranslation errno.Errno) *Error {
err := &Error{message: message, errno: linuxTranslation}
// TODO(b/34162363): Remove this.
errno := linuxTranslation
if errno < 0 || int(errno) >= len(linuxBackwardsTranslations) {
panic(fmt.Sprint("invalid errno: ", errno))
if int(err.errno) >= len(linuxBackwardsTranslations) {
panic(fmt.Sprint("invalid errno: ", err.errno))
}
e := error(unix.Errno(errno))
e := error(unix.Errno(err.errno))
// syserror.ErrWouldBlock gets translated to syserror.EWOULDBLOCK and
// enables proper blocking semantics. This should temporary address the
// class of blocking bugs that keep popping up with the current state of
@@ -58,7 +57,7 @@ func New(message string, linuxTranslation linux.Errno) *Error {
if e == syserror.EWOULDBLOCK {
e = syserror.ErrWouldBlock
}
linuxBackwardsTranslations[errno] = linuxBackwardsTranslation{err: e, ok: true}
linuxBackwardsTranslations[err.errno] = linuxBackwardsTranslation{err: e, ok: true}
return err
}
@@ -69,7 +68,7 @@ func New(message string, linuxTranslation linux.Errno) *Error {
// NewDynamic should only be used sparingly and not be used for static error
// messages. Errors with static error messages should be declared with New as
// global variables.
func NewDynamic(message string, linuxTranslation linux.Errno) *Error {
func NewDynamic(message string, linuxTranslation errno.Errno) *Error {
return &Error{message: message, errno: linuxTranslation}
}
@@ -82,7 +81,7 @@ func NewWithoutTranslation(message string) *Error {
return &Error{message: message, noTranslation: true}
}
func newWithHost(message string, linuxTranslation linux.Errno, hostErrno unix.Errno) *Error {
func newWithHost(message string, linuxTranslation errno.Errno, hostErrno unix.Errno) *Error {
e := New(message, linuxTranslation)
addLinuxHostTranslation(hostErrno, e)
return e
@@ -114,19 +113,19 @@ func (e *Error) ToError() error {
if e.noTranslation {
panic(fmt.Sprintf("error %q does not support translation", e.message))
}
errno := int(e.errno)
if errno == linux.NOERRNO {
err := int(e.errno)
if err == errno.NOERRNO {
return nil
}
if errno <= 0 || errno >= len(linuxBackwardsTranslations) || !linuxBackwardsTranslations[errno].ok {
panic(fmt.Sprintf("unknown error %q (%d)", e.message, errno))
if err >= len(linuxBackwardsTranslations) || !linuxBackwardsTranslations[err].ok {
panic(fmt.Sprintf("unknown error %q (%d)", e.message, err))
}
return linuxBackwardsTranslations[errno].err
return linuxBackwardsTranslations[err].err
}
// ToLinux converts the Error to a Linux ABI error that can be returned to the
// application.
func (e *Error) ToLinux() linux.Errno {
func (e *Error) ToLinux() errno.Errno {
if e.noTranslation {
panic(fmt.Sprintf("No Linux ABI translation available for %q", e.message))
}
@@ -138,137 +137,137 @@ func (e *Error) ToLinux() linux.Errno {
// Some of the errors should be replaced with package specific errors and
// others should be removed entirely.
var (
ErrNotPermitted = newWithHost("operation not permitted", linux.EPERM, unix.EPERM)
ErrNoFileOrDir = newWithHost("no such file or directory", linux.ENOENT, unix.ENOENT)
ErrNoProcess = newWithHost("no such process", linux.ESRCH, unix.ESRCH)
ErrInterrupted = newWithHost("interrupted system call", linux.EINTR, unix.EINTR)
ErrIO = newWithHost("I/O error", linux.EIO, unix.EIO)
ErrDeviceOrAddress = newWithHost("no such device or address", linux.ENXIO, unix.ENXIO)
ErrTooManyArgs = newWithHost("argument list too long", linux.E2BIG, unix.E2BIG)
ErrEcec = newWithHost("exec format error", linux.ENOEXEC, unix.ENOEXEC)
ErrBadFD = newWithHost("bad file number", linux.EBADF, unix.EBADF)
ErrNoChild = newWithHost("no child processes", linux.ECHILD, unix.ECHILD)
ErrTryAgain = newWithHost("try again", linux.EAGAIN, unix.EAGAIN)
ErrNoMemory = newWithHost("out of memory", linux.ENOMEM, unix.ENOMEM)
ErrPermissionDenied = newWithHost("permission denied", linux.EACCES, unix.EACCES)
ErrBadAddress = newWithHost("bad address", linux.EFAULT, unix.EFAULT)
ErrNotBlockDevice = newWithHost("block device required", linux.ENOTBLK, unix.ENOTBLK)
ErrBusy = newWithHost("device or resource busy", linux.EBUSY, unix.EBUSY)
ErrExists = newWithHost("file exists", linux.EEXIST, unix.EEXIST)
ErrCrossDeviceLink = newWithHost("cross-device link", linux.EXDEV, unix.EXDEV)
ErrNoDevice = newWithHost("no such device", linux.ENODEV, unix.ENODEV)
ErrNotDir = newWithHost("not a directory", linux.ENOTDIR, unix.ENOTDIR)
ErrIsDir = newWithHost("is a directory", linux.EISDIR, unix.EISDIR)
ErrInvalidArgument = newWithHost("invalid argument", linux.EINVAL, unix.EINVAL)
ErrFileTableOverflow = newWithHost("file table overflow", linux.ENFILE, unix.ENFILE)
ErrTooManyOpenFiles = newWithHost("too many open files", linux.EMFILE, unix.EMFILE)
ErrNotTTY = newWithHost("not a typewriter", linux.ENOTTY, unix.ENOTTY)
ErrTestFileBusy = newWithHost("text file busy", linux.ETXTBSY, unix.ETXTBSY)
ErrFileTooBig = newWithHost("file too large", linux.EFBIG, unix.EFBIG)
ErrNoSpace = newWithHost("no space left on device", linux.ENOSPC, unix.ENOSPC)
ErrIllegalSeek = newWithHost("illegal seek", linux.ESPIPE, unix.ESPIPE)
ErrReadOnlyFS = newWithHost("read-only file system", linux.EROFS, unix.EROFS)
ErrTooManyLinks = newWithHost("too many links", linux.EMLINK, unix.EMLINK)
ErrBrokenPipe = newWithHost("broken pipe", linux.EPIPE, unix.EPIPE)
ErrDomain = newWithHost("math argument out of domain of func", linux.EDOM, unix.EDOM)
ErrRange = newWithHost("math result not representable", linux.ERANGE, unix.ERANGE)
ErrDeadlock = newWithHost("resource deadlock would occur", linux.EDEADLOCK, unix.EDEADLOCK)
ErrNameTooLong = newWithHost("file name too long", linux.ENAMETOOLONG, unix.ENAMETOOLONG)
ErrNoLocksAvailable = newWithHost("no record locks available", linux.ENOLCK, unix.ENOLCK)
ErrInvalidSyscall = newWithHost("invalid system call number", linux.ENOSYS, unix.ENOSYS)
ErrDirNotEmpty = newWithHost("directory not empty", linux.ENOTEMPTY, unix.ENOTEMPTY)
ErrLinkLoop = newWithHost("too many symbolic links encountered", linux.ELOOP, unix.ELOOP)
ErrNoMessage = newWithHost("no message of desired type", linux.ENOMSG, unix.ENOMSG)
ErrIdentifierRemoved = newWithHost("identifier removed", linux.EIDRM, unix.EIDRM)
ErrChannelOutOfRange = newWithHost("channel number out of range", linux.ECHRNG, unix.ECHRNG)
ErrLevelTwoNotSynced = newWithHost("level 2 not synchronized", linux.EL2NSYNC, unix.EL2NSYNC)
ErrLevelThreeHalted = newWithHost("level 3 halted", linux.EL3HLT, unix.EL3HLT)
ErrLevelThreeReset = newWithHost("level 3 reset", linux.EL3RST, unix.EL3RST)
ErrLinkNumberOutOfRange = newWithHost("link number out of range", linux.ELNRNG, unix.ELNRNG)
ErrProtocolDriverNotAttached = newWithHost("protocol driver not attached", linux.EUNATCH, unix.EUNATCH)
ErrNoCSIAvailable = newWithHost("no CSI structure available", linux.ENOCSI, unix.ENOCSI)
ErrLevelTwoHalted = newWithHost("level 2 halted", linux.EL2HLT, unix.EL2HLT)
ErrInvalidExchange = newWithHost("invalid exchange", linux.EBADE, unix.EBADE)
ErrInvalidRequestDescriptor = newWithHost("invalid request descriptor", linux.EBADR, unix.EBADR)
ErrExchangeFull = newWithHost("exchange full", linux.EXFULL, unix.EXFULL)
ErrNoAnode = newWithHost("no anode", linux.ENOANO, unix.ENOANO)
ErrInvalidRequestCode = newWithHost("invalid request code", linux.EBADRQC, unix.EBADRQC)
ErrInvalidSlot = newWithHost("invalid slot", linux.EBADSLT, unix.EBADSLT)
ErrBadFontFile = newWithHost("bad font file format", linux.EBFONT, unix.EBFONT)
ErrNotStream = newWithHost("device not a stream", linux.ENOSTR, unix.ENOSTR)
ErrNoDataAvailable = newWithHost("no data available", linux.ENODATA, unix.ENODATA)
ErrTimerExpired = newWithHost("timer expired", linux.ETIME, unix.ETIME)
ErrStreamsResourceDepleted = newWithHost("out of streams resources", linux.ENOSR, unix.ENOSR)
ErrMachineNotOnNetwork = newWithHost("machine is not on the network", linux.ENONET, unix.ENONET)
ErrPackageNotInstalled = newWithHost("package not installed", linux.ENOPKG, unix.ENOPKG)
ErrIsRemote = newWithHost("object is remote", linux.EREMOTE, unix.EREMOTE)
ErrNoLink = newWithHost("link has been severed", linux.ENOLINK, unix.ENOLINK)
ErrAdvertise = newWithHost("advertise error", linux.EADV, unix.EADV)
ErrSRMount = newWithHost("srmount error", linux.ESRMNT, unix.ESRMNT)
ErrSendCommunication = newWithHost("communication error on send", linux.ECOMM, unix.ECOMM)
ErrProtocol = newWithHost("protocol error", linux.EPROTO, unix.EPROTO)
ErrMultihopAttempted = newWithHost("multihop attempted", linux.EMULTIHOP, unix.EMULTIHOP)
ErrRFS = newWithHost("RFS specific error", linux.EDOTDOT, unix.EDOTDOT)
ErrInvalidDataMessage = newWithHost("not a data message", linux.EBADMSG, unix.EBADMSG)
ErrOverflow = newWithHost("value too large for defined data type", linux.EOVERFLOW, unix.EOVERFLOW)
ErrNetworkNameNotUnique = newWithHost("name not unique on network", linux.ENOTUNIQ, unix.ENOTUNIQ)
ErrFDInBadState = newWithHost("file descriptor in bad state", linux.EBADFD, unix.EBADFD)
ErrRemoteAddressChanged = newWithHost("remote address changed", linux.EREMCHG, unix.EREMCHG)
ErrSharedLibraryInaccessible = newWithHost("can not access a needed shared library", linux.ELIBACC, unix.ELIBACC)
ErrCorruptedSharedLibrary = newWithHost("accessing a corrupted shared library", linux.ELIBBAD, unix.ELIBBAD)
ErrLibSectionCorrupted = newWithHost(".lib section in a.out corrupted", linux.ELIBSCN, unix.ELIBSCN)
ErrTooManySharedLibraries = newWithHost("attempting to link in too many shared libraries", linux.ELIBMAX, unix.ELIBMAX)
ErrSharedLibraryExeced = newWithHost("cannot exec a shared library directly", linux.ELIBEXEC, unix.ELIBEXEC)
ErrIllegalByteSequence = newWithHost("illegal byte sequence", linux.EILSEQ, unix.EILSEQ)
ErrShouldRestart = newWithHost("interrupted system call should be restarted", linux.ERESTART, unix.ERESTART)
ErrStreamPipe = newWithHost("streams pipe error", linux.ESTRPIPE, unix.ESTRPIPE)
ErrTooManyUsers = newWithHost("too many users", linux.EUSERS, unix.EUSERS)
ErrNotASocket = newWithHost("socket operation on non-socket", linux.ENOTSOCK, unix.ENOTSOCK)
ErrDestinationAddressRequired = newWithHost("destination address required", linux.EDESTADDRREQ, unix.EDESTADDRREQ)
ErrMessageTooLong = newWithHost("message too long", linux.EMSGSIZE, unix.EMSGSIZE)
ErrWrongProtocolForSocket = newWithHost("protocol wrong type for socket", linux.EPROTOTYPE, unix.EPROTOTYPE)
ErrProtocolNotAvailable = newWithHost("protocol not available", linux.ENOPROTOOPT, unix.ENOPROTOOPT)
ErrProtocolNotSupported = newWithHost("protocol not supported", linux.EPROTONOSUPPORT, unix.EPROTONOSUPPORT)
ErrSocketNotSupported = newWithHost("socket type not supported", linux.ESOCKTNOSUPPORT, unix.ESOCKTNOSUPPORT)
ErrEndpointOperation = newWithHost("operation not supported on transport endpoint", linux.EOPNOTSUPP, unix.EOPNOTSUPP)
ErrProtocolFamilyNotSupported = newWithHost("protocol family not supported", linux.EPFNOSUPPORT, unix.EPFNOSUPPORT)
ErrAddressFamilyNotSupported = newWithHost("address family not supported by protocol", linux.EAFNOSUPPORT, unix.EAFNOSUPPORT)
ErrAddressInUse = newWithHost("address already in use", linux.EADDRINUSE, unix.EADDRINUSE)
ErrAddressNotAvailable = newWithHost("cannot assign requested address", linux.EADDRNOTAVAIL, unix.EADDRNOTAVAIL)
ErrNetworkDown = newWithHost("network is down", linux.ENETDOWN, unix.ENETDOWN)
ErrNetworkUnreachable = newWithHost("network is unreachable", linux.ENETUNREACH, unix.ENETUNREACH)
ErrNetworkReset = newWithHost("network dropped connection because of reset", linux.ENETRESET, unix.ENETRESET)
ErrConnectionAborted = newWithHost("software caused connection abort", linux.ECONNABORTED, unix.ECONNABORTED)
ErrConnectionReset = newWithHost("connection reset by peer", linux.ECONNRESET, unix.ECONNRESET)
ErrNoBufferSpace = newWithHost("no buffer space available", linux.ENOBUFS, unix.ENOBUFS)
ErrAlreadyConnected = newWithHost("transport endpoint is already connected", linux.EISCONN, unix.EISCONN)
ErrNotConnected = newWithHost("transport endpoint is not connected", linux.ENOTCONN, unix.ENOTCONN)
ErrShutdown = newWithHost("cannot send after transport endpoint shutdown", linux.ESHUTDOWN, unix.ESHUTDOWN)
ErrTooManyRefs = newWithHost("too many references: cannot splice", linux.ETOOMANYREFS, unix.ETOOMANYREFS)
ErrTimedOut = newWithHost("connection timed out", linux.ETIMEDOUT, unix.ETIMEDOUT)
ErrConnectionRefused = newWithHost("connection refused", linux.ECONNREFUSED, unix.ECONNREFUSED)
ErrHostDown = newWithHost("host is down", linux.EHOSTDOWN, unix.EHOSTDOWN)
ErrNoRoute = newWithHost("no route to host", linux.EHOSTUNREACH, unix.EHOSTUNREACH)
ErrAlreadyInProgress = newWithHost("operation already in progress", linux.EALREADY, unix.EALREADY)
ErrInProgress = newWithHost("operation now in progress", linux.EINPROGRESS, unix.EINPROGRESS)
ErrStaleFileHandle = newWithHost("stale file handle", linux.ESTALE, unix.ESTALE)
ErrStructureNeedsCleaning = newWithHost("structure needs cleaning", linux.EUCLEAN, unix.EUCLEAN)
ErrIsNamedFile = newWithHost("is a named type file", linux.ENOTNAM, unix.ENOTNAM)
ErrRemoteIO = newWithHost("remote I/O error", linux.EREMOTEIO, unix.EREMOTEIO)
ErrQuotaExceeded = newWithHost("quota exceeded", linux.EDQUOT, unix.EDQUOT)
ErrNoMedium = newWithHost("no medium found", linux.ENOMEDIUM, unix.ENOMEDIUM)
ErrWrongMediumType = newWithHost("wrong medium type", linux.EMEDIUMTYPE, unix.EMEDIUMTYPE)
ErrCanceled = newWithHost("operation canceled", linux.ECANCELED, unix.ECANCELED)
ErrNoKey = newWithHost("required key not available", linux.ENOKEY, unix.ENOKEY)
ErrKeyExpired = newWithHost("key has expired", linux.EKEYEXPIRED, unix.EKEYEXPIRED)
ErrKeyRevoked = newWithHost("key has been revoked", linux.EKEYREVOKED, unix.EKEYREVOKED)
ErrKeyRejected = newWithHost("key was rejected by service", linux.EKEYREJECTED, unix.EKEYREJECTED)
ErrOwnerDied = newWithHost("owner died", linux.EOWNERDEAD, unix.EOWNERDEAD)
ErrNotRecoverable = newWithHost("state not recoverable", linux.ENOTRECOVERABLE, unix.ENOTRECOVERABLE)
ErrNotPermitted = newWithHost("operation not permitted", errno.EPERM, unix.EPERM)
ErrNoFileOrDir = newWithHost("no such file or directory", errno.ENOENT, unix.ENOENT)
ErrNoProcess = newWithHost("no such process", errno.ESRCH, unix.ESRCH)
ErrInterrupted = newWithHost("interrupted system call", errno.EINTR, unix.EINTR)
ErrIO = newWithHost("I/O error", errno.EIO, unix.EIO)
ErrDeviceOrAddress = newWithHost("no such device or address", errno.ENXIO, unix.ENXIO)
ErrTooManyArgs = newWithHost("argument list too long", errno.E2BIG, unix.E2BIG)
ErrEcec = newWithHost("exec format error", errno.ENOEXEC, unix.ENOEXEC)
ErrBadFD = newWithHost("bad file number", errno.EBADF, unix.EBADF)
ErrNoChild = newWithHost("no child processes", errno.ECHILD, unix.ECHILD)
ErrTryAgain = newWithHost("try again", errno.EAGAIN, unix.EAGAIN)
ErrNoMemory = newWithHost("out of memory", errno.ENOMEM, unix.ENOMEM)
ErrPermissionDenied = newWithHost("permission denied", errno.EACCES, unix.EACCES)
ErrBadAddress = newWithHost("bad address", errno.EFAULT, unix.EFAULT)
ErrNotBlockDevice = newWithHost("block device required", errno.ENOTBLK, unix.ENOTBLK)
ErrBusy = newWithHost("device or resource busy", errno.EBUSY, unix.EBUSY)
ErrExists = newWithHost("file exists", errno.EEXIST, unix.EEXIST)
ErrCrossDeviceLink = newWithHost("cross-device link", errno.EXDEV, unix.EXDEV)
ErrNoDevice = newWithHost("no such device", errno.ENODEV, unix.ENODEV)
ErrNotDir = newWithHost("not a directory", errno.ENOTDIR, unix.ENOTDIR)
ErrIsDir = newWithHost("is a directory", errno.EISDIR, unix.EISDIR)
ErrInvalidArgument = newWithHost("invalid argument", errno.EINVAL, unix.EINVAL)
ErrFileTableOverflow = newWithHost("file table overflow", errno.ENFILE, unix.ENFILE)
ErrTooManyOpenFiles = newWithHost("too many open files", errno.EMFILE, unix.EMFILE)
ErrNotTTY = newWithHost("not a typewriter", errno.ENOTTY, unix.ENOTTY)
ErrTestFileBusy = newWithHost("text file busy", errno.ETXTBSY, unix.ETXTBSY)
ErrFileTooBig = newWithHost("file too large", errno.EFBIG, unix.EFBIG)
ErrNoSpace = newWithHost("no space left on device", errno.ENOSPC, unix.ENOSPC)
ErrIllegalSeek = newWithHost("illegal seek", errno.ESPIPE, unix.ESPIPE)
ErrReadOnlyFS = newWithHost("read-only file system", errno.EROFS, unix.EROFS)
ErrTooManyLinks = newWithHost("too many links", errno.EMLINK, unix.EMLINK)
ErrBrokenPipe = newWithHost("broken pipe", errno.EPIPE, unix.EPIPE)
ErrDomain = newWithHost("math argument out of domain of func", errno.EDOM, unix.EDOM)
ErrRange = newWithHost("math result not representable", errno.ERANGE, unix.ERANGE)
ErrDeadlock = newWithHost("resource deadlock would occur", errno.EDEADLOCK, unix.EDEADLOCK)
ErrNameTooLong = newWithHost("file name too long", errno.ENAMETOOLONG, unix.ENAMETOOLONG)
ErrNoLocksAvailable = newWithHost("no record locks available", errno.ENOLCK, unix.ENOLCK)
ErrInvalidSyscall = newWithHost("invalid system call number", errno.ENOSYS, unix.ENOSYS)
ErrDirNotEmpty = newWithHost("directory not empty", errno.ENOTEMPTY, unix.ENOTEMPTY)
ErrLinkLoop = newWithHost("too many symbolic links encountered", errno.ELOOP, unix.ELOOP)
ErrNoMessage = newWithHost("no message of desired type", errno.ENOMSG, unix.ENOMSG)
ErrIdentifierRemoved = newWithHost("identifier removed", errno.EIDRM, unix.EIDRM)
ErrChannelOutOfRange = newWithHost("channel number out of range", errno.ECHRNG, unix.ECHRNG)
ErrLevelTwoNotSynced = newWithHost("level 2 not synchronized", errno.EL2NSYNC, unix.EL2NSYNC)
ErrLevelThreeHalted = newWithHost("level 3 halted", errno.EL3HLT, unix.EL3HLT)
ErrLevelThreeReset = newWithHost("level 3 reset", errno.EL3RST, unix.EL3RST)
ErrLinkNumberOutOfRange = newWithHost("link number out of range", errno.ELNRNG, unix.ELNRNG)
ErrProtocolDriverNotAttached = newWithHost("protocol driver not attached", errno.EUNATCH, unix.EUNATCH)
ErrNoCSIAvailable = newWithHost("no CSI structure available", errno.ENOCSI, unix.ENOCSI)
ErrLevelTwoHalted = newWithHost("level 2 halted", errno.EL2HLT, unix.EL2HLT)
ErrInvalidExchange = newWithHost("invalid exchange", errno.EBADE, unix.EBADE)
ErrInvalidRequestDescriptor = newWithHost("invalid request descriptor", errno.EBADR, unix.EBADR)
ErrExchangeFull = newWithHost("exchange full", errno.EXFULL, unix.EXFULL)
ErrNoAnode = newWithHost("no anode", errno.ENOANO, unix.ENOANO)
ErrInvalidRequestCode = newWithHost("invalid request code", errno.EBADRQC, unix.EBADRQC)
ErrInvalidSlot = newWithHost("invalid slot", errno.EBADSLT, unix.EBADSLT)
ErrBadFontFile = newWithHost("bad font file format", errno.EBFONT, unix.EBFONT)
ErrNotStream = newWithHost("device not a stream", errno.ENOSTR, unix.ENOSTR)
ErrNoDataAvailable = newWithHost("no data available", errno.ENODATA, unix.ENODATA)
ErrTimerExpired = newWithHost("timer expired", errno.ETIME, unix.ETIME)
ErrStreamsResourceDepleted = newWithHost("out of streams resources", errno.ENOSR, unix.ENOSR)
ErrMachineNotOnNetwork = newWithHost("machine is not on the network", errno.ENONET, unix.ENONET)
ErrPackageNotInstalled = newWithHost("package not installed", errno.ENOPKG, unix.ENOPKG)
ErrIsRemote = newWithHost("object is remote", errno.EREMOTE, unix.EREMOTE)
ErrNoLink = newWithHost("link has been severed", errno.ENOLINK, unix.ENOLINK)
ErrAdvertise = newWithHost("advertise error", errno.EADV, unix.EADV)
ErrSRMount = newWithHost("srmount error", errno.ESRMNT, unix.ESRMNT)
ErrSendCommunication = newWithHost("communication error on send", errno.ECOMM, unix.ECOMM)
ErrProtocol = newWithHost("protocol error", errno.EPROTO, unix.EPROTO)
ErrMultihopAttempted = newWithHost("multihop attempted", errno.EMULTIHOP, unix.EMULTIHOP)
ErrRFS = newWithHost("RFS specific error", errno.EDOTDOT, unix.EDOTDOT)
ErrInvalidDataMessage = newWithHost("not a data message", errno.EBADMSG, unix.EBADMSG)
ErrOverflow = newWithHost("value too large for defined data type", errno.EOVERFLOW, unix.EOVERFLOW)
ErrNetworkNameNotUnique = newWithHost("name not unique on network", errno.ENOTUNIQ, unix.ENOTUNIQ)
ErrFDInBadState = newWithHost("file descriptor in bad state", errno.EBADFD, unix.EBADFD)
ErrRemoteAddressChanged = newWithHost("remote address changed", errno.EREMCHG, unix.EREMCHG)
ErrSharedLibraryInaccessible = newWithHost("can not access a needed shared library", errno.ELIBACC, unix.ELIBACC)
ErrCorruptedSharedLibrary = newWithHost("accessing a corrupted shared library", errno.ELIBBAD, unix.ELIBBAD)
ErrLibSectionCorrupted = newWithHost(".lib section in a.out corrupted", errno.ELIBSCN, unix.ELIBSCN)
ErrTooManySharedLibraries = newWithHost("attempting to link in too many shared libraries", errno.ELIBMAX, unix.ELIBMAX)
ErrSharedLibraryExeced = newWithHost("cannot exec a shared library directly", errno.ELIBEXEC, unix.ELIBEXEC)
ErrIllegalByteSequence = newWithHost("illegal byte sequence", errno.EILSEQ, unix.EILSEQ)
ErrShouldRestart = newWithHost("interrupted system call should be restarted", errno.ERESTART, unix.ERESTART)
ErrStreamPipe = newWithHost("streams pipe error", errno.ESTRPIPE, unix.ESTRPIPE)
ErrTooManyUsers = newWithHost("too many users", errno.EUSERS, unix.EUSERS)
ErrNotASocket = newWithHost("socket operation on non-socket", errno.ENOTSOCK, unix.ENOTSOCK)
ErrDestinationAddressRequired = newWithHost("destination address required", errno.EDESTADDRREQ, unix.EDESTADDRREQ)
ErrMessageTooLong = newWithHost("message too long", errno.EMSGSIZE, unix.EMSGSIZE)
ErrWrongProtocolForSocket = newWithHost("protocol wrong type for socket", errno.EPROTOTYPE, unix.EPROTOTYPE)
ErrProtocolNotAvailable = newWithHost("protocol not available", errno.ENOPROTOOPT, unix.ENOPROTOOPT)
ErrProtocolNotSupported = newWithHost("protocol not supported", errno.EPROTONOSUPPORT, unix.EPROTONOSUPPORT)
ErrSocketNotSupported = newWithHost("socket type not supported", errno.ESOCKTNOSUPPORT, unix.ESOCKTNOSUPPORT)
ErrEndpointOperation = newWithHost("operation not supported on transport endpoint", errno.EOPNOTSUPP, unix.EOPNOTSUPP)
ErrProtocolFamilyNotSupported = newWithHost("protocol family not supported", errno.EPFNOSUPPORT, unix.EPFNOSUPPORT)
ErrAddressFamilyNotSupported = newWithHost("address family not supported by protocol", errno.EAFNOSUPPORT, unix.EAFNOSUPPORT)
ErrAddressInUse = newWithHost("address already in use", errno.EADDRINUSE, unix.EADDRINUSE)
ErrAddressNotAvailable = newWithHost("cannot assign requested address", errno.EADDRNOTAVAIL, unix.EADDRNOTAVAIL)
ErrNetworkDown = newWithHost("network is down", errno.ENETDOWN, unix.ENETDOWN)
ErrNetworkUnreachable = newWithHost("network is unreachable", errno.ENETUNREACH, unix.ENETUNREACH)
ErrNetworkReset = newWithHost("network dropped connection because of reset", errno.ENETRESET, unix.ENETRESET)
ErrConnectionAborted = newWithHost("software caused connection abort", errno.ECONNABORTED, unix.ECONNABORTED)
ErrConnectionReset = newWithHost("connection reset by peer", errno.ECONNRESET, unix.ECONNRESET)
ErrNoBufferSpace = newWithHost("no buffer space available", errno.ENOBUFS, unix.ENOBUFS)
ErrAlreadyConnected = newWithHost("transport endpoint is already connected", errno.EISCONN, unix.EISCONN)
ErrNotConnected = newWithHost("transport endpoint is not connected", errno.ENOTCONN, unix.ENOTCONN)
ErrShutdown = newWithHost("cannot send after transport endpoint shutdown", errno.ESHUTDOWN, unix.ESHUTDOWN)
ErrTooManyRefs = newWithHost("too many references: cannot splice", errno.ETOOMANYREFS, unix.ETOOMANYREFS)
ErrTimedOut = newWithHost("connection timed out", errno.ETIMEDOUT, unix.ETIMEDOUT)
ErrConnectionRefused = newWithHost("connection refused", errno.ECONNREFUSED, unix.ECONNREFUSED)
ErrHostDown = newWithHost("host is down", errno.EHOSTDOWN, unix.EHOSTDOWN)
ErrNoRoute = newWithHost("no route to host", errno.EHOSTUNREACH, unix.EHOSTUNREACH)
ErrAlreadyInProgress = newWithHost("operation already in progress", errno.EALREADY, unix.EALREADY)
ErrInProgress = newWithHost("operation now in progress", errno.EINPROGRESS, unix.EINPROGRESS)
ErrStaleFileHandle = newWithHost("stale file handle", errno.ESTALE, unix.ESTALE)
ErrStructureNeedsCleaning = newWithHost("structure needs cleaning", errno.EUCLEAN, unix.EUCLEAN)
ErrIsNamedFile = newWithHost("is a named type file", errno.ENOTNAM, unix.ENOTNAM)
ErrRemoteIO = newWithHost("remote I/O error", errno.EREMOTEIO, unix.EREMOTEIO)
ErrQuotaExceeded = newWithHost("quota exceeded", errno.EDQUOT, unix.EDQUOT)
ErrNoMedium = newWithHost("no medium found", errno.ENOMEDIUM, unix.ENOMEDIUM)
ErrWrongMediumType = newWithHost("wrong medium type", errno.EMEDIUMTYPE, unix.EMEDIUMTYPE)
ErrCanceled = newWithHost("operation canceled", errno.ECANCELED, unix.ECANCELED)
ErrNoKey = newWithHost("required key not available", errno.ENOKEY, unix.ENOKEY)
ErrKeyExpired = newWithHost("key has expired", errno.EKEYEXPIRED, unix.EKEYEXPIRED)
ErrKeyRevoked = newWithHost("key has been revoked", errno.EKEYREVOKED, unix.EKEYREVOKED)
ErrKeyRejected = newWithHost("key was rejected by service", errno.EKEYREJECTED, unix.EKEYREJECTED)
ErrOwnerDied = newWithHost("owner died", errno.EOWNERDEAD, unix.EOWNERDEAD)
ErrNotRecoverable = newWithHost("state not recoverable", errno.ENOTRECOVERABLE, unix.ENOTRECOVERABLE)
// ErrWouldBlock translates to EWOULDBLOCK which is the same as EAGAIN
// on Linux.
ErrWouldBlock = New("operation would block", linux.EWOULDBLOCK)
ErrWouldBlock = New("operation would block", errno.EWOULDBLOCK)
)
// FromError converts a generic error to an *Error.