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r: 8203
b: refs/heads/master
c: 3ed8491
h: refs/heads/master
i:
  8201: 9aa267d
  8199: a82cb85
v: v3
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Eric Van Hensbergen authored and Linus Torvalds committed Sep 9, 2005
1 parent b78a5c6 commit a981d3b
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2 changes: 1 addition & 1 deletion [refs]
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---
refs/heads/master: 322b329ab787de5f45abca9c9eabfd33bc5927e8
refs/heads/master: 3ed8491c8a75cefe95b57f7f428a3e2ddd421e97
70 changes: 70 additions & 0 deletions trunk/fs/9p/debug.h
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/*
* linux/fs/9p/debug.h - V9FS Debug Definitions
*
* Copyright (C) 2004 by Eric Van Hensbergen <ericvh@gmail.com>
* Copyright (C) 2002 by Ron Minnich <rminnich@lanl.gov>
*
* 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.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to:
* Free Software Foundation
* 51 Franklin Street, Fifth Floor
* Boston, MA 02111-1301 USA
*
*/

#define DEBUG_ERROR (1<<0)
#define DEBUG_CURRENT (1<<1)
#define DEBUG_9P (1<<2)
#define DEBUG_VFS (1<<3)
#define DEBUG_CONV (1<<4)
#define DEBUG_MUX (1<<5)
#define DEBUG_TRANS (1<<6)
#define DEBUG_SLABS (1<<7)

#define DEBUG_DUMP_PKT 0

extern int v9fs_debug_level;

#define dprintk(level, format, arg...) \
do { \
if((v9fs_debug_level & level)==level) \
printk(KERN_NOTICE "-- %s (%d): " \
format , __FUNCTION__, current->pid , ## arg); \
} while(0)

#define eprintk(level, format, arg...) \
do { \
printk(level "v9fs: %s (%d): " \
format , __FUNCTION__, current->pid , ## arg); \
} while(0)

#if DEBUG_DUMP_PKT
static inline void dump_data(const unsigned char *data, unsigned int datalen)
{
int i, j;
int len = datalen;

printk(KERN_DEBUG "data ");
for (i = 0; i < len; i += 4) {
for (j = 0; (j < 4) && (i + j < len); j++)
printk(KERN_DEBUG "%02x", data[i + j]);
printk(KERN_DEBUG " ");
}
printk(KERN_DEBUG "\n");
}
#else /* DEBUG_DUMP_PKT */
static inline void dump_data(const unsigned char *data, unsigned int datalen)
{

}
#endif /* DEBUG_DUMP_PKT */
93 changes: 93 additions & 0 deletions trunk/fs/9p/error.c
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/*
* linux/fs/9p/error.c
*
* Error string handling
*
* Plan 9 uses error strings, Unix uses error numbers. These functions
* try to help manage that and provide for dynamically adding error
* mappings.
*
* Copyright (C) 2004 by Eric Van Hensbergen <ericvh@gmail.com>
* Copyright (C) 2002 by Ron Minnich <rminnich@lanl.gov>
*
* 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.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to:
* Free Software Foundation
* 51 Franklin Street, Fifth Floor
* Boston, MA 02111-1301 USA
*
*/

#include <linux/config.h>
#include <linux/module.h>

#include <linux/list.h>
#include <linux/jhash.h>

#include "debug.h"
#include "error.h"

/**
* v9fs_error_init - preload
* @errstr: error string
*
*/

int v9fs_error_init(void)
{
struct errormap *c;
int bucket;

/* initialize hash table */
for (bucket = 0; bucket < ERRHASHSZ; bucket++)
INIT_HLIST_HEAD(&hash_errmap[bucket]);

/* load initial error map into hash table */
for (c = errmap; c->name != NULL; c++) {
bucket = jhash(c->name, strlen(c->name), 0) % ERRHASHSZ;
INIT_HLIST_NODE(&c->list);
hlist_add_head(&c->list, &hash_errmap[bucket]);
}

return 1;
}

/**
* errstr2errno - convert error string to error number
* @errstr: error string
*
*/

int v9fs_errstr2errno(char *errstr)
{
int errno = 0;
struct hlist_node *p = NULL;
struct errormap *c = NULL;
int bucket = jhash(errstr, strlen(errstr), 0) % ERRHASHSZ;

hlist_for_each_entry(c, p, &hash_errmap[bucket], list) {
if (!strcmp(c->name, errstr)) {
errno = c->val;
break;
}
}

if (errno == 0) {
/* TODO: if error isn't found, add it dynamically */
printk(KERN_ERR "%s: errstr :%s: not found\n", __FUNCTION__,
errstr);
errno = 1;
}

return -errno;
}
181 changes: 181 additions & 0 deletions trunk/fs/9p/error.h
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/*
* linux/fs/9p/error.h
*
* Huge Nasty Error Table
*
* Plan 9 uses error strings, Unix uses error numbers. This table tries to
* match UNIX strings and Plan 9 strings to unix error numbers. It is used
* to preload the dynamic error table which can also track user-specific error
* strings.
*
* Copyright (C) 2004 by Eric Van Hensbergen <ericvh@gmail.com>
* Copyright (C) 2002 by Ron Minnich <rminnich@lanl.gov>
*
* 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.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to:
* Free Software Foundation
* 51 Franklin Street, Fifth Floor
* Boston, MA 02111-1301 USA
*
*/

#include <linux/errno.h>

struct errormap {
char *name;
int val;

struct hlist_node list;
};

#define ERRHASHSZ 32
static struct hlist_head hash_errmap[ERRHASHSZ];

/* FixMe - reduce to a reasonable size */
static struct errormap errmap[] = {
{"Operation not permitted", 1},
{"wstat prohibited", 1},
{"No such file or directory", 2},
{"file not found", 2},
{"Interrupted system call", 4},
{"Input/output error", 5},
{"No such device or address", 6},
{"Argument list too long", 7},
{"Bad file descriptor", 9},
{"Resource temporarily unavailable", 11},
{"Cannot allocate memory", 12},
{"Permission denied", 13},
{"Bad address", 14},
{"Block device required", 15},
{"Device or resource busy", 16},
{"File exists", 17},
{"Invalid cross-device link", 18},
{"No such device", 19},
{"Not a directory", 20},
{"Is a directory", 21},
{"Invalid argument", 22},
{"Too many open files in system", 23},
{"Too many open files", 24},
{"Text file busy", 26},
{"File too large", 27},
{"No space left on device", 28},
{"Illegal seek", 29},
{"Read-only file system", 30},
{"Too many links", 31},
{"Broken pipe", 32},
{"Numerical argument out of domain", 33},
{"Numerical result out of range", 34},
{"Resource deadlock avoided", 35},
{"File name too long", 36},
{"No locks available", 37},
{"Function not implemented", 38},
{"Directory not empty", 39},
{"Too many levels of symbolic links", 40},
{"Unknown error 41", 41},
{"No message of desired type", 42},
{"Identifier removed", 43},
{"File locking deadlock error", 58},
{"No data available", 61},
{"Machine is not on the network", 64},
{"Package not installed", 65},
{"Object is remote", 66},
{"Link has been severed", 67},
{"Communication error on send", 70},
{"Protocol error", 71},
{"Bad message", 74},
{"File descriptor in bad state", 77},
{"Streams pipe error", 86},
{"Too many users", 87},
{"Socket operation on non-socket", 88},
{"Message too long", 90},
{"Protocol not available", 92},
{"Protocol not supported", 93},
{"Socket type not supported", 94},
{"Operation not supported", 95},
{"Protocol family not supported", 96},
{"Network is down", 100},
{"Network is unreachable", 101},
{"Network dropped connection on reset", 102},
{"Software caused connection abort", 103},
{"Connection reset by peer", 104},
{"No buffer space available", 105},
{"Transport endpoint is already connected", 106},
{"Transport endpoint is not connected", 107},
{"Cannot send after transport endpoint shutdown", 108},
{"Connection timed out", 110},
{"Connection refused", 111},
{"Host is down", 112},
{"No route to host", 113},
{"Operation already in progress", 114},
{"Operation now in progress", 115},
{"Is a named type file", 120},
{"Remote I/O error", 121},
{"Disk quota exceeded", 122},
{"Operation canceled", 125},
{"Unknown error 126", 126},
{"Unknown error 127", 127},
/* errors from fossil, vacfs, and u9fs */
{"fid unknown or out of range", EBADF},
{"permission denied", EACCES},
{"file does not exist", ENOENT},
{"authentication failed", ECONNREFUSED},
{"bad offset in directory read", ESPIPE},
{"bad use of fid", EBADF},
{"wstat can't convert between files and directories", EPERM},
{"directory is not empty", ENOTEMPTY},
{"file exists", EEXIST},
{"file already exists", EEXIST},
{"file or directory already exists", EEXIST},
{"fid already in use", EBADF},
{"file in use", ETXTBSY},
{"i/o error", EIO},
{"file already open for I/O", ETXTBSY},
{"illegal mode", EINVAL},
{"illegal name", ENAMETOOLONG},
{"not a directory", ENOTDIR},
{"not a member of proposed group", EINVAL},
{"not owner", EACCES},
{"only owner can change group in wstat", EACCES},
{"read only file system", EROFS},
{"no access to special file", EPERM},
{"i/o count too large", EIO},
{"unknown group", EINVAL},
{"unknown user", EINVAL},
{"bogus wstat buffer", EPROTO},
{"exclusive use file already open", EAGAIN},
{"corrupted directory entry", EIO},
{"corrupted file entry", EIO},
{"corrupted block label", EIO},
{"corrupted meta data", EIO},
{"illegal offset", EINVAL},
{"illegal path element", ENOENT},
{"root of file system is corrupted", EIO},
{"corrupted super block", EIO},
{"protocol botch", EPROTO},
{"file system is full", ENOSPC},
{"file is in use", EAGAIN},
{"directory entry is not allocated", ENOENT},
{"file is read only", EROFS},
{"file has been removed", EIDRM},
{"only support truncation to zero length", EPERM},
{"cannot remove root", EPERM},
{"file too big", EFBIG},
{"venti i/o error", EIO},
/* these are not errors */
{"u9fs rhostsauth: no authentication required", 0},
{"u9fs authnone: no authentication required", 0},
{NULL, -1}
};

extern int v9fs_error_init(void);
extern int v9fs_errstr2errno(char *errstr);
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