[people/ms/linux.git] / fs / afs / misc.c

/* miscellaneous bits
 *
 * Copyright (C) 2002, 2007 Red Hat, Inc. All Rights Reserved.
 * Written by David Howells (dhowells@redhat.com)
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version
 * 2 of the License, or (at your option) any later version.
 */

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/errno.h>
#include "internal.h"
#include "afs_fs.h"

/*
 * convert an AFS abort code to a Linux error number
 */
int afs_abort_to_error(u32 abort_code)
{
	switch (abort_code) {
		/* Low errno codes inserted into abort namespace */
	case 13:		return -EACCES;
	case 27:		return -EFBIG;
	case 30:		return -EROFS;

		/* VICE "special error" codes; 101 - 111 */
	case VSALVAGE:		return -EIO;
	case VNOVNODE:		return -ENOENT;
	case VNOVOL:		return -ENOMEDIUM;
	case VVOLEXISTS:	return -EEXIST;
	case VNOSERVICE:	return -EIO;
	case VOFFLINE:		return -ENOENT;
	case VONLINE:		return -EEXIST;
	case VDISKFULL:		return -ENOSPC;
	case VOVERQUOTA:	return -EDQUOT;
	case VBUSY:		return -EBUSY;
	case VMOVED:		return -ENXIO;

		/* Volume Location server errors */
	case AFSVL_IDEXIST:		return -EEXIST;
	case AFSVL_IO:			return -EREMOTEIO;
	case AFSVL_NAMEEXIST:		return -EEXIST;
	case AFSVL_CREATEFAIL:		return -EREMOTEIO;
	case AFSVL_NOENT:		return -ENOMEDIUM;
	case AFSVL_EMPTY:		return -ENOMEDIUM;
	case AFSVL_ENTDELETED:		return -ENOMEDIUM;
	case AFSVL_BADNAME:		return -EINVAL;
	case AFSVL_BADINDEX:		return -EINVAL;
	case AFSVL_BADVOLTYPE:		return -EINVAL;
	case AFSVL_BADSERVER:		return -EINVAL;
	case AFSVL_BADPARTITION:	return -EINVAL;
	case AFSVL_REPSFULL:		return -EFBIG;
	case AFSVL_NOREPSERVER:		return -ENOENT;
	case AFSVL_DUPREPSERVER:	return -EEXIST;
	case AFSVL_RWNOTFOUND:		return -ENOENT;
	case AFSVL_BADREFCOUNT:		return -EINVAL;
	case AFSVL_SIZEEXCEEDED:	return -EINVAL;
	case AFSVL_BADENTRY:		return -EINVAL;
	case AFSVL_BADVOLIDBUMP:	return -EINVAL;
	case AFSVL_IDALREADYHASHED:	return -EINVAL;
	case AFSVL_ENTRYLOCKED:		return -EBUSY;
	case AFSVL_BADVOLOPER:		return -EBADRQC;
	case AFSVL_BADRELLOCKTYPE:	return -EINVAL;
	case AFSVL_RERELEASE:		return -EREMOTEIO;
	case AFSVL_BADSERVERFLAG:	return -EINVAL;
	case AFSVL_PERM:		return -EACCES;
	case AFSVL_NOMEM:		return -EREMOTEIO;

		/* Unified AFS error table; ET "uae" == 0x2f6df00 */
	case 0x2f6df00:		return -EPERM;
	case 0x2f6df01:		return -ENOENT;
	case 0x2f6df04:		return -EIO;
	case 0x2f6df0a:		return -EAGAIN;
	case 0x2f6df0b:		return -ENOMEM;
	case 0x2f6df0c:		return -EACCES;
	case 0x2f6df0f:		return -EBUSY;
	case 0x2f6df10:		return -EEXIST;
	case 0x2f6df11:		return -EXDEV;
	case 0x2f6df12:		return -ENODEV;
	case 0x2f6df13:		return -ENOTDIR;
	case 0x2f6df14:		return -EISDIR;
	case 0x2f6df15:		return -EINVAL;
	case 0x2f6df1a:		return -EFBIG;
	case 0x2f6df1b:		return -ENOSPC;
	case 0x2f6df1d:		return -EROFS;
	case 0x2f6df1e:		return -EMLINK;
	case 0x2f6df20:		return -EDOM;
	case 0x2f6df21:		return -ERANGE;
	case 0x2f6df22:		return -EDEADLK;
	case 0x2f6df23:		return -ENAMETOOLONG;
	case 0x2f6df24:		return -ENOLCK;
	case 0x2f6df26:		return -ENOTEMPTY;
	case 0x2f6df28:		return -EWOULDBLOCK;
	case 0x2f6df69:		return -ENOTCONN;
	case 0x2f6df6c:		return -ETIMEDOUT;
	case 0x2f6df78:		return -EDQUOT;

		/* RXKAD abort codes; from include/rxrpc/packet.h.  ET "RXK" == 0x1260B00 */
	case RXKADINCONSISTENCY: return -EPROTO;
	case RXKADPACKETSHORT:	return -EPROTO;
	case RXKADLEVELFAIL:	return -EKEYREJECTED;
	case RXKADTICKETLEN:	return -EKEYREJECTED;
	case RXKADOUTOFSEQUENCE: return -EPROTO;
	case RXKADNOAUTH:	return -EKEYREJECTED;
	case RXKADBADKEY:	return -EKEYREJECTED;
	case RXKADBADTICKET:	return -EKEYREJECTED;
	case RXKADUNKNOWNKEY:	return -EKEYREJECTED;
	case RXKADEXPIRED:	return -EKEYEXPIRED;
	case RXKADSEALEDINCON:	return -EKEYREJECTED;
	case RXKADDATALEN:	return -EKEYREJECTED;
	case RXKADILLEGALLEVEL:	return -EKEYREJECTED;

	case RXGEN_OPCODE:	return -ENOTSUPP;

	default:		return -EREMOTEIO;
	}
}

/*
 * Select the error to report from a set of errors.
 */
void afs_prioritise_error(struct afs_error *e, int error, u32 abort_code)
{
	switch (error) {
	case 0:
		return;
	default:
		if (e->error == -ETIMEDOUT ||
		    e->error == -ETIME)
			return;
		/* Fall through */
	case -ETIMEDOUT:
	case -ETIME:
		if (e->error == -ENOMEM ||
		    e->error == -ENONET)
			return;
		/* Fall through */
	case -ENOMEM:
	case -ENONET:
		if (e->error == -ERFKILL)
			return;
		/* Fall through */
	case -ERFKILL:
		if (e->error == -EADDRNOTAVAIL)
			return;
		/* Fall through */
	case -EADDRNOTAVAIL:
		if (e->error == -ENETUNREACH)
			return;
		/* Fall through */
	case -ENETUNREACH:
		if (e->error == -EHOSTUNREACH)
			return;
		/* Fall through */
	case -EHOSTUNREACH:
		if (e->error == -EHOSTDOWN)
			return;
		/* Fall through */
	case -EHOSTDOWN:
		if (e->error == -ECONNREFUSED)
			return;
		/* Fall through */
	case -ECONNREFUSED:
		if (e->error == -ECONNRESET)
			return;
		/* Fall through */
	case -ECONNRESET: /* Responded, but call expired. */
		if (e->responded)
			return;
		e->error = error;
		return;

	case -ECONNABORTED:
		e->responded = true;
		e->error = afs_abort_to_error(abort_code);
		return;
	}
}
Commit	Line	Data
ec26815a	1	/* miscellaneous bits
1da177e4	2	*
08e0e7c8	3	* Copyright (C) 2002, 2007 Red Hat, Inc. All Rights Reserved.
1da177e4 LT	4	* Written by David Howells (dhowells@redhat.com)
	5	*
	6	* This program is free software; you can redistribute it and/or
	7	* modify it under the terms of the GNU General Public License
	8	* as published by the Free Software Foundation; either version
	9	* 2 of the License, or (at your option) any later version.
	10	*/
	11
	12	#include <linux/kernel.h>
	13	#include <linux/module.h>
	14	#include <linux/errno.h>
1da177e4	15	#include "internal.h"
08e0e7c8	16	#include "afs_fs.h"
1da177e4	17
1da177e4 LT	18	/*
	19	* convert an AFS abort code to a Linux error number
	20	*/
08e0e7c8	21	int afs_abort_to_error(u32 abort_code)
1da177e4	22	{
08e0e7c8	23	switch (abort_code) {
f780c8ea	24	/* Low errno codes inserted into abort namespace */
08e0e7c8	25	case 13: return -EACCES;
416351f2	26	case 27: return -EFBIG;
260a9803	27	case 30: return -EROFS;
53d5864b	28
f780c8ea	29	/* VICE "special error" codes; 101 - 111 */
1da177e4 LT	30	case VSALVAGE: return -EIO;
1da177e4 LT	31	case VNOVNODE: return -ENOENT;
08e0e7c8	32	case VNOVOL: return -ENOMEDIUM;
1da177e4 LT	33	case VVOLEXISTS: return -EEXIST;
	34	case VNOSERVICE: return -EIO;
	35	case VOFFLINE: return -ENOENT;
	36	case VONLINE: return -EEXIST;
	37	case VDISKFULL: return -ENOSPC;
	38	case VOVERQUOTA: return -EDQUOT;
	39	case VBUSY: return -EBUSY;
	40	case VMOVED: return -ENXIO;
53d5864b	41
f780c8ea DH	42	/* Volume Location server errors */
	43	case AFSVL_IDEXIST: return -EEXIST;
	44	case AFSVL_IO: return -EREMOTEIO;
	45	case AFSVL_NAMEEXIST: return -EEXIST;
	46	case AFSVL_CREATEFAIL: return -EREMOTEIO;
	47	case AFSVL_NOENT: return -ENOMEDIUM;
	48	case AFSVL_EMPTY: return -ENOMEDIUM;
	49	case AFSVL_ENTDELETED: return -ENOMEDIUM;
	50	case AFSVL_BADNAME: return -EINVAL;
	51	case AFSVL_BADINDEX: return -EINVAL;
	52	case AFSVL_BADVOLTYPE: return -EINVAL;
	53	case AFSVL_BADSERVER: return -EINVAL;
	54	case AFSVL_BADPARTITION: return -EINVAL;
	55	case AFSVL_REPSFULL: return -EFBIG;
	56	case AFSVL_NOREPSERVER: return -ENOENT;
	57	case AFSVL_DUPREPSERVER: return -EEXIST;
	58	case AFSVL_RWNOTFOUND: return -ENOENT;
	59	case AFSVL_BADREFCOUNT: return -EINVAL;
	60	case AFSVL_SIZEEXCEEDED: return -EINVAL;
	61	case AFSVL_BADENTRY: return -EINVAL;
	62	case AFSVL_BADVOLIDBUMP: return -EINVAL;
	63	case AFSVL_IDALREADYHASHED: return -EINVAL;
	64	case AFSVL_ENTRYLOCKED: return -EBUSY;
	65	case AFSVL_BADVOLOPER: return -EBADRQC;
	66	case AFSVL_BADRELLOCKTYPE: return -EINVAL;
	67	case AFSVL_RERELEASE: return -EREMOTEIO;
	68	case AFSVL_BADSERVERFLAG: return -EINVAL;
	69	case AFSVL_PERM: return -EACCES;
	70	case AFSVL_NOMEM: return -EREMOTEIO;
	71
	72	/* Unified AFS error table; ET "uae" == 0x2f6df00 */
53d5864b NWF	73	case 0x2f6df00: return -EPERM;
	74	case 0x2f6df01: return -ENOENT;
	75	case 0x2f6df04: return -EIO;
	76	case 0x2f6df0a: return -EAGAIN;
	77	case 0x2f6df0b: return -ENOMEM;
260a9803 DH	78	case 0x2f6df0c: return -EACCES;
	79	case 0x2f6df0f: return -EBUSY;
	80	case 0x2f6df10: return -EEXIST;
	81	case 0x2f6df11: return -EXDEV;
53d5864b	82	case 0x2f6df12: return -ENODEV;
260a9803 DH	83	case 0x2f6df13: return -ENOTDIR;
	84	case 0x2f6df14: return -EISDIR;
	85	case 0x2f6df15: return -EINVAL;
	86	case 0x2f6df1a: return -EFBIG;
	87	case 0x2f6df1b: return -ENOSPC;
	88	case 0x2f6df1d: return -EROFS;
	89	case 0x2f6df1e: return -EMLINK;
	90	case 0x2f6df20: return -EDOM;
	91	case 0x2f6df21: return -ERANGE;
	92	case 0x2f6df22: return -EDEADLK;
	93	case 0x2f6df23: return -ENAMETOOLONG;
	94	case 0x2f6df24: return -ENOLCK;
	95	case 0x2f6df26: return -ENOTEMPTY;
53d5864b NWF	96	case 0x2f6df28: return -EWOULDBLOCK;
	97	case 0x2f6df69: return -ENOTCONN;
	98	case 0x2f6df6c: return -ETIMEDOUT;
260a9803	99	case 0x2f6df78: return -EDQUOT;
005411c3	100
f780c8ea	101	/* RXKAD abort codes; from include/rxrpc/packet.h. ET "RXK" == 0x1260B00 */
005411c3 DH	102	case RXKADINCONSISTENCY: return -EPROTO;
	103	case RXKADPACKETSHORT: return -EPROTO;
	104	case RXKADLEVELFAIL: return -EKEYREJECTED;
	105	case RXKADTICKETLEN: return -EKEYREJECTED;
	106	case RXKADOUTOFSEQUENCE: return -EPROTO;
	107	case RXKADNOAUTH: return -EKEYREJECTED;
	108	case RXKADBADKEY: return -EKEYREJECTED;
	109	case RXKADBADTICKET: return -EKEYREJECTED;
	110	case RXKADUNKNOWNKEY: return -EKEYREJECTED;
	111	case RXKADEXPIRED: return -EKEYEXPIRED;
	112	case RXKADSEALEDINCON: return -EKEYREJECTED;
	113	case RXKADDATALEN: return -EKEYREJECTED;
	114	case RXKADILLEGALLEVEL: return -EKEYREJECTED;
	115
1157f153 DH	116	case RXGEN_OPCODE: return -ENOTSUPP;
1157f153 DH	117
260a9803	118	default: return -EREMOTEIO;
1da177e4	119	}
ec26815a	120	}
4584ae96 DH	121
	122	/*
	123	* Select the error to report from a set of errors.
	124	*/
	125	void afs_prioritise_error(struct afs_error *e, int error, u32 abort_code)
	126	{
	127	switch (error) {
	128	case 0:
	129	return;
	130	default:
	131	if (e->error == -ETIMEDOUT \|\|
	132	e->error == -ETIME)
	133	return;
e690c9e3	134	/* Fall through */
4584ae96 DH	135	case -ETIMEDOUT:
	136	case -ETIME:
	137	if (e->error == -ENOMEM \|\|
	138	e->error == -ENONET)
	139	return;
e690c9e3	140	/* Fall through */
4584ae96 DH	141	case -ENOMEM:
	142	case -ENONET:
	143	if (e->error == -ERFKILL)
	144	return;
e690c9e3	145	/* Fall through */
4584ae96 DH	146	case -ERFKILL:
	147	if (e->error == -EADDRNOTAVAIL)
	148	return;
e690c9e3	149	/* Fall through */
4584ae96 DH	150	case -EADDRNOTAVAIL:
	151	if (e->error == -ENETUNREACH)
	152	return;
e690c9e3	153	/* Fall through */
4584ae96 DH	154	case -ENETUNREACH:
	155	if (e->error == -EHOSTUNREACH)
	156	return;
e690c9e3	157	/* Fall through */
4584ae96 DH	158	case -EHOSTUNREACH:
	159	if (e->error == -EHOSTDOWN)
	160	return;
e690c9e3	161	/* Fall through */
4584ae96 DH	162	case -EHOSTDOWN:
	163	if (e->error == -ECONNREFUSED)
	164	return;
e690c9e3	165	/* Fall through */
4584ae96 DH	166	case -ECONNREFUSED:
	167	if (e->error == -ECONNRESET)
	168	return;
e690c9e3	169	/* Fall through */
4584ae96 DH	170	case -ECONNRESET: /* Responded, but call expired. */
	171	if (e->responded)
	172	return;
	173	e->error = error;
	174	return;
	175
	176	case -ECONNABORTED:
	177	e->responded = true;
	178	e->error = afs_abort_to_error(abort_code);
	179	return;
	180	}
	181	}