svn commit: r273475 - head/sys/xen
Roger Pau Monné
royger at FreeBSD.org
Wed Oct 22 16:58:53 UTC 2014
Author: royger
Date: Wed Oct 22 16:58:52 2014
New Revision: 273475
URL: https://svnweb.freebsd.org/changeset/base/273475
Log:
xen: add a Xen to BSD error translation
Since Xen and FreeBSD error codes are completely different add a
translation layer in order to convert Xen error codes into native
FreeBSD error codes. This will be used by the privcmd device, which
needs to return the hypercall errors into user-space.
Sponsored by: Citrix Systems R&D
xen/error.h:
- Import Xen error codes.
- Create a table to map Xen error codes into FreeBSD native error
codes.
- Create an inline function that performs the translation.
Added:
head/sys/xen/error.h (contents, props changed)
Added: head/sys/xen/error.h
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ head/sys/xen/error.h Wed Oct 22 16:58:52 2014 (r273475)
@@ -0,0 +1,305 @@
+/*-
+ * Copyright (c) 2014 Roger Pau Monné <royger at FreeBSD.org>.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ */
+
+#ifndef __XEN_ERROR_H__
+#define __XEN_ERROR_H__
+
+/* List of Xen error codes */
+#define XEN_EPERM 1 /* Operation not permitted */
+#define XEN_ENOENT 2 /* No such file or directory */
+#define XEN_ESRCH 3 /* No such process */
+#define XEN_EINTR 4 /* Interrupted system call */
+#define XEN_EIO 5 /* I/O error */
+#define XEN_ENXIO 6 /* No such device or address */
+#define XEN_E2BIG 7 /* Arg list too long */
+#define XEN_ENOEXEC 8 /* Exec format error */
+#define XEN_EBADF 9 /* Bad file number */
+#define XEN_ECHILD 10 /* No child processes */
+#define XEN_EAGAIN 11 /* Try again */
+#define XEN_ENOMEM 12 /* Out of memory */
+#define XEN_EACCES 13 /* Permission denied */
+#define XEN_EFAULT 14 /* Bad address */
+#define XEN_ENOTBLK 15 /* Block device required */
+#define XEN_EBUSY 16 /* Device or resource busy */
+#define XEN_EEXIST 17 /* File exists */
+#define XEN_EXDEV 18 /* Cross-device link */
+#define XEN_ENODEV 19 /* No such device */
+#define XEN_ENOTDIR 20 /* Not a directory */
+#define XEN_EISDIR 21 /* Is a directory */
+#define XEN_EINVAL 22 /* Invalid argument */
+#define XEN_ENFILE 23 /* File table overflow */
+#define XEN_EMFILE 24 /* Too many open files */
+#define XEN_ENOTTY 25 /* Not a typewriter */
+#define XEN_ETXTBSY 26 /* Text file busy */
+#define XEN_EFBIG 27 /* File too large */
+#define XEN_ENOSPC 28 /* No space left on device */
+#define XEN_ESPIPE 29 /* Illegal seek */
+#define XEN_EROFS 30 /* Read-only file system */
+#define XEN_EMLINK 31 /* Too many links */
+#define XEN_EPIPE 32 /* Broken pipe */
+#define XEN_EDOM 33 /* Math argument out of domain of func */
+#define XEN_ERANGE 34 /* Math result not representable */
+#define XEN_EDEADLK 35 /* Resource deadlock would occur */
+#define XEN_ENAMETOOLONG 36 /* File name too long */
+#define XEN_ENOLCK 37 /* No record locks available */
+#define XEN_ENOSYS 38 /* Function not implemented */
+#define XEN_ENOTEMPTY 39 /* Directory not empty */
+#define XEN_ELOOP 40 /* Too many symbolic links encountered */
+#define XEN_ENOMSG 42 /* No message of desired type */
+#define XEN_EIDRM 43 /* Identifier removed */
+#define XEN_ECHRNG 44 /* Channel number out of range */
+#define XEN_EL2NSYNC 45 /* Level 2 not synchronized */
+#define XEN_EL3HLT 46 /* Level 3 halted */
+#define XEN_EL3RST 47 /* Level 3 reset */
+#define XEN_ELNRNG 48 /* Link number out of range */
+#define XEN_EUNATCH 49 /* Protocol driver not attached */
+#define XEN_ENOCSI 50 /* No CSI structure available */
+#define XEN_EL2HLT 51 /* Level 2 halted */
+#define XEN_EBADE 52 /* Invalid exchange */
+#define XEN_EBADR 53 /* Invalid request descriptor */
+#define XEN_EXFULL 54 /* Exchange full */
+#define XEN_ENOANO 55 /* No anode */
+#define XEN_EBADRQC 56 /* Invalid request code */
+#define XEN_EBADSLT 57 /* Invalid slot */
+#define XEN_EBFONT 59 /* Bad font file format */
+#define XEN_ENOSTR 60 /* Device not a stream */
+#define XEN_ENODATA 61 /* No data available */
+#define XEN_ETIME 62 /* Timer expired */
+#define XEN_ENOSR 63 /* Out of streams resources */
+#define XEN_ENONET 64 /* Machine is not on the network */
+#define XEN_ENOPKG 65 /* Package not installed */
+#define XEN_EREMOTE 66 /* Object is remote */
+#define XEN_ENOLINK 67 /* Link has been severed */
+#define XEN_EADV 68 /* Advertise error */
+#define XEN_ESRMNT 69 /* Srmount error */
+#define XEN_ECOMM 70 /* Communication error on send */
+#define XEN_EPROTO 71 /* Protocol error */
+#define XEN_EMULTIHOP 72 /* Multihop attempted */
+#define XEN_EDOTDOT 73 /* RFS specific error */
+#define XEN_EBADMSG 74 /* Not a data message */
+#define XEN_EOVERFLOW 75 /* Value too large for defined data type */
+#define XEN_ENOTUNIQ 76 /* Name not unique on network */
+#define XEN_EBADFD 77 /* File descriptor in bad state */
+#define XEN_EREMCHG 78 /* Remote address changed */
+#define XEN_ELIBACC 79 /* Can not access a needed shared library */
+#define XEN_ELIBBAD 80 /* Accessing a corrupted shared library */
+#define XEN_ELIBSCN 81 /* .lib section in a.out corrupted */
+#define XEN_ELIBMAX 82 /* Attempting to link in too many shared libraries */
+#define XEN_ELIBEXEC 83 /* Cannot exec a shared library directly */
+#define XEN_EILSEQ 84 /* Illegal byte sequence */
+#define XEN_ERESTART 85 /* Interrupted system call should be restarted */
+#define XEN_ESTRPIPE 86 /* Streams pipe error */
+#define XEN_EUSERS 87 /* Too many users */
+#define XEN_ENOTSOCK 88 /* Socket operation on non-socket */
+#define XEN_EDESTADDRREQ 89 /* Destination address required */
+#define XEN_EMSGSIZE 90 /* Message too long */
+#define XEN_EPROTOTYPE 91 /* Protocol wrong type for socket */
+#define XEN_ENOPROTOOPT 92 /* Protocol not available */
+#define XEN_EPROTONOSUPPORT 93 /* Protocol not supported */
+#define XEN_ESOCKTNOSUPPORT 94 /* Socket type not supported */
+#define XEN_EOPNOTSUPP 95 /* Operation not supported on transport endpoint */
+#define XEN_EPFNOSUPPORT 96 /* Protocol family not supported */
+#define XEN_EAFNOSUPPORT 97 /* Address family not supported by protocol */
+#define XEN_EADDRINUSE 98 /* Address already in use */
+#define XEN_EADDRNOTAVAIL 99 /* Cannot assign requested address */
+#define XEN_ENETDOWN 100 /* Network is down */
+#define XEN_ENETUNREACH 101 /* Network is unreachable */
+#define XEN_ENETRESET 102 /* Network dropped connection because of reset */
+#define XEN_ECONNABORTED 103 /* Software caused connection abort */
+#define XEN_ECONNRESET 104 /* Connection reset by peer */
+#define XEN_ENOBUFS 105 /* No buffer space available */
+#define XEN_EISCONN 106 /* Transport endpoint is already connected */
+#define XEN_ENOTCONN 107 /* Transport endpoint is not connected */
+#define XEN_ESHUTDOWN 108 /* Cannot send after transport endpoint shutdown */
+#define XEN_ETOOMANYREFS 109 /* Too many references: cannot splice */
+#define XEN_ETIMEDOUT 110 /* Connection timed out */
+#define XEN_ECONNREFUSED 111 /* Connection refused */
+#define XEN_EHOSTDOWN 112 /* Host is down */
+#define XEN_EHOSTUNREACH 113 /* No route to host */
+#define XEN_EALREADY 114 /* Operation already in progress */
+#define XEN_EINPROGRESS 115 /* Operation now in progress */
+#define XEN_ESTALE 116 /* Stale NFS file handle */
+#define XEN_EUCLEAN 117 /* Structure needs cleaning */
+#define XEN_ENOTNAM 118 /* Not a XENIX named type file */
+#define XEN_ENAVAIL 119 /* No XENIX semaphores available */
+#define XEN_EISNAM 120 /* Is a named type file */
+#define XEN_EREMOTEIO 121 /* Remote I/O error */
+#define XEN_EDQUOT 122 /* Quota exceeded */
+
+#define XEN_ENOMEDIUM 123 /* No medium found */
+#define XEN_EMEDIUMTYPE 124 /* Wrong medium type */
+
+/* Translation table */
+static int xen_errors[] =
+{
+ [XEN_EPERM] = EPERM,
+ [XEN_ENOENT] = ENOENT,
+ [XEN_ESRCH] = ESRCH,
+ [XEN_EINTR] = EINTR,
+ [XEN_EIO] = EIO,
+ [XEN_ENXIO] = ENXIO,
+ [XEN_E2BIG] = E2BIG,
+ [XEN_ENOEXEC] = ENOEXEC,
+ [XEN_EBADF] = EBADF,
+ [XEN_ECHILD] = ECHILD,
+ [XEN_EAGAIN] = EAGAIN,
+ [XEN_ENOMEM] = ENOMEM,
+ [XEN_EACCES] = EACCES,
+ [XEN_EFAULT] = EFAULT,
+ [XEN_ENOTBLK] = ENOTBLK,
+ [XEN_EBUSY] = EBUSY,
+ [XEN_EEXIST] = EEXIST,
+ [XEN_EXDEV] = EXDEV,
+ [XEN_ENODEV] = ENODEV,
+ [XEN_ENOTDIR] = ENOTDIR,
+ [XEN_EISDIR] = EISDIR,
+ [XEN_EINVAL] = EINVAL,
+ [XEN_ENFILE] = ENFILE,
+ [XEN_EMFILE] = EMFILE,
+ [XEN_ENOTTY] = ENOTTY,
+ [XEN_ETXTBSY] = ETXTBSY,
+ [XEN_EFBIG] = EFBIG,
+ [XEN_ENOSPC] = ENOSPC,
+ [XEN_ESPIPE] = ESPIPE,
+ [XEN_EROFS] = EROFS,
+ [XEN_EMLINK] = EMLINK,
+ [XEN_EPIPE] = EPIPE,
+ [XEN_EDOM] = EDOM,
+ [XEN_ERANGE] = ERANGE,
+ [XEN_EDEADLK] = EDEADLK,
+ [XEN_ENAMETOOLONG] = ENAMETOOLONG,
+ [XEN_ENOLCK] = ENOLCK,
+ [XEN_ENOSYS] = ENOSYS,
+ [XEN_ENOTEMPTY] = ENOTEMPTY,
+ [XEN_ELOOP] = ELOOP,
+ [XEN_ENOMSG] = ENOMSG,
+ [XEN_EIDRM] = EIDRM,
+ [XEN_ECHRNG] = ERANGE,
+ [XEN_EL2NSYNC] = EFAULT,
+ [XEN_EL3HLT] = EFAULT,
+ [XEN_EL3RST] = EFAULT,
+ [XEN_ELNRNG] = ERANGE,
+ [XEN_EUNATCH] = ENODEV,
+ [XEN_ENOCSI] = ENODEV,
+ [XEN_EL2HLT] = EFAULT,
+ [XEN_EBADE] = ERANGE,
+ [XEN_EBADR] = EINVAL,
+ [XEN_EXFULL] = ENOBUFS,
+ [XEN_ENOANO] = EINVAL,
+ [XEN_EBADRQC] = EINVAL,
+ [XEN_EBADSLT] = EINVAL,
+ [XEN_EBFONT] = EFAULT,
+ [XEN_ENOSTR] = EINVAL,
+ [XEN_ENODATA] = ENOENT,
+ [XEN_ETIME] = ETIMEDOUT,
+ [XEN_ENOSR] = EFAULT,
+ [XEN_ENONET] = ENETDOWN,
+ [XEN_ENOPKG] = EINVAL,
+ [XEN_EREMOTE] = EREMOTE,
+ [XEN_ENOLINK] = ENOLINK,
+ [XEN_EADV] = EFAULT,
+ [XEN_ESRMNT] = EFAULT,
+ [XEN_ECOMM] = EFAULT,
+ [XEN_EPROTO] = EPROTO,
+ [XEN_EMULTIHOP] = EMULTIHOP,
+ [XEN_EDOTDOT] = EFAULT,
+ [XEN_EBADMSG] = EBADMSG,
+ [XEN_EOVERFLOW] = EOVERFLOW,
+ [XEN_ENOTUNIQ] = EADDRINUSE,
+ [XEN_EBADFD] = EBADF,
+ [XEN_EREMCHG] = EHOSTDOWN,
+ [XEN_ELIBACC] = EFAULT,
+ [XEN_ELIBBAD] = EFAULT,
+ [XEN_ELIBSCN] = EFAULT,
+ [XEN_ELIBMAX] = EFAULT,
+ [XEN_ELIBEXEC] = EFAULT,
+ [XEN_EILSEQ] = EILSEQ,
+ [XEN_ERESTART] = EAGAIN,
+ [XEN_ESTRPIPE] = EPIPE,
+ [XEN_EUSERS] = EUSERS,
+ [XEN_ENOTSOCK] = ENOTSOCK,
+ [XEN_EDESTADDRREQ] = EDESTADDRREQ,
+ [XEN_EMSGSIZE] = EMSGSIZE,
+ [XEN_EPROTOTYPE] = EPROTOTYPE,
+ [XEN_ENOPROTOOPT] = ENOPROTOOPT,
+ [XEN_EPROTONOSUPPORT] = EPROTONOSUPPORT,
+ [XEN_ESOCKTNOSUPPORT] = ESOCKTNOSUPPORT,
+ [XEN_EOPNOTSUPP] = EOPNOTSUPP,
+ [XEN_EPFNOSUPPORT] = EPFNOSUPPORT,
+ [XEN_EAFNOSUPPORT] = EAFNOSUPPORT,
+ [XEN_EADDRINUSE] = EADDRINUSE,
+ [XEN_EADDRNOTAVAIL] = EADDRNOTAVAIL,
+ [XEN_ENETDOWN] = ENETDOWN,
+ [XEN_ENETUNREACH] = ENETUNREACH,
+ [XEN_ENETRESET] = ENETRESET,
+ [XEN_ECONNABORTED] = ECONNABORTED,
+ [XEN_ECONNRESET] = ECONNRESET,
+ [XEN_ENOBUFS] = ENOBUFS,
+ [XEN_EISCONN] = EISCONN,
+ [XEN_ENOTCONN] = ENOTCONN,
+ [XEN_ESHUTDOWN] = ESHUTDOWN,
+ [XEN_ETOOMANYREFS] = ETOOMANYREFS,
+ [XEN_ETIMEDOUT] = ETIMEDOUT,
+ [XEN_ECONNREFUSED] = ECONNREFUSED,
+ [XEN_EHOSTDOWN] = EHOSTDOWN,
+ [XEN_EHOSTUNREACH] = EHOSTUNREACH,
+ [XEN_EALREADY] = EALREADY,
+ [XEN_EINPROGRESS] = EINPROGRESS,
+ [XEN_ESTALE] = ESTALE,
+ [XEN_EUCLEAN] = EFAULT,
+ [XEN_ENOTNAM] = EFAULT,
+ [XEN_ENAVAIL] = EFAULT,
+ [XEN_EISNAM] = EFAULT,
+ [XEN_EREMOTEIO] = EIO,
+ [XEN_EDQUOT] = EDQUOT,
+ [XEN_ENOMEDIUM] = ENOENT,
+ [XEN_EMEDIUMTYPE] = ENOENT,
+};
+
+static inline int
+xen_translate_error(int error)
+{
+ int bsd_error;
+
+ KASSERT((error < 0), ("Value is not a valid Xen error code"));
+
+ if (-error >= nitems(xen_errors)) {
+ /*
+ * We received an error value that cannot be translated,
+ * return EINVAL.
+ */
+ return (EINVAL);
+ }
+
+ bsd_error = xen_errors[-error];
+ KASSERT((bsd_error != 0), ("Unknown Xen error code"));
+
+ return (bsd_error);
+}
+
+#endif /* !__XEN_ERROR_H__ */
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