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-rw-r--r--fs/afs/misc.c174
1 files changed, 174 insertions, 0 deletions
diff --git a/fs/afs/misc.c b/fs/afs/misc.c
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+++ b/fs/afs/misc.c
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+// SPDX-License-Identifier: GPL-2.0-or-later
+/* miscellaneous bits
+ *
+ * Copyright (C) 2002, 2007 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@redhat.com)
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/errno.h>
+#include "internal.h"
+#include "afs_fs.h"
+#include "protocol_uae.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 */
+ case UAEPERM: return -EPERM;
+ case UAENOENT: return -ENOENT;
+ case UAEAGAIN: return -EAGAIN;
+ case UAEACCES: return -EACCES;
+ case UAEBUSY: return -EBUSY;
+ case UAEEXIST: return -EEXIST;
+ case UAENOTDIR: return -ENOTDIR;
+ case UAEISDIR: return -EISDIR;
+ case UAEFBIG: return -EFBIG;
+ case UAENOSPC: return -ENOSPC;
+ case UAEROFS: return -EROFS;
+ case UAEMLINK: return -EMLINK;
+ case UAEDEADLK: return -EDEADLK;
+ case UAENAMETOOLONG: return -ENAMETOOLONG;
+ case UAENOLCK: return -ENOLCK;
+ case UAENOTEMPTY: return -ENOTEMPTY;
+ case UAELOOP: return -ELOOP;
+ case UAEOVERFLOW: return -EOVERFLOW;
+ case UAENOMEDIUM: return -ENOMEDIUM;
+ case UAEDQUOT: 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;
+ fallthrough;
+ case -ETIMEDOUT:
+ case -ETIME:
+ if (e->error == -ENOMEM ||
+ e->error == -ENONET)
+ return;
+ fallthrough;
+ case -ENOMEM:
+ case -ENONET:
+ if (e->error == -ERFKILL)
+ return;
+ fallthrough;
+ case -ERFKILL:
+ if (e->error == -EADDRNOTAVAIL)
+ return;
+ fallthrough;
+ case -EADDRNOTAVAIL:
+ if (e->error == -ENETUNREACH)
+ return;
+ fallthrough;
+ case -ENETUNREACH:
+ if (e->error == -EHOSTUNREACH)
+ return;
+ fallthrough;
+ case -EHOSTUNREACH:
+ if (e->error == -EHOSTDOWN)
+ return;
+ fallthrough;
+ case -EHOSTDOWN:
+ if (e->error == -ECONNREFUSED)
+ return;
+ fallthrough;
+ case -ECONNREFUSED:
+ if (e->error == -ECONNRESET)
+ return;
+ fallthrough;
+ case -ECONNRESET: /* Responded, but call expired. */
+ if (e->responded)
+ return;
+ e->error = error;
+ return;
+
+ case -ECONNABORTED:
+ error = afs_abort_to_error(abort_code);
+ fallthrough;
+ case -ENETRESET: /* Responded, but we seem to have changed address */
+ e->responded = true;
+ e->error = error;
+ return;
+ }
+}