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freebsd-dev/lib/libsysdecode/errno.c
Ed Schouten 87f69beea3 libsysdecode: Add a new ABI type, SYSDECODE_ABI_CLOUDABI32. 
In order to let truss(8) support tracing of 32-bit CloudABI
applications, we need to add a new ABI type to libsysdecode. We can
reuse the existing errno mapping table. Also link in the cloudabi32
system call table to translate system call names.

While there, remove all of the architecture ifdefs. There are not
needed, as the CloudABI data types and system call tables build fine on
any architecture. Building this unconditionally will make it easier to
do tracing for different compat modes, emulation, etc.

Reviewed by:	jhb
Differential Revision:	https://reviews.freebsd.org/D13516
2017-12-16 19:37:55 +00:00

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/*-
* Copyright (c) 2015 John H. Baldwin <jhb@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.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/acl.h>
#include <sys/wait.h>
#include <errno.h>
#include <limits.h>
#include <stdbool.h>
#include <stdio.h>
#include <sysdecode.h>
#if defined(__i386__) || defined(__amd64__)
/*
* Linux syscalls return negative errno's, we do positive and map them
* Reference:
* FreeBSD: src/sys/sys/errno.h
* Linux: linux-2.6.17.8/include/asm-generic/errno-base.h
* linux-2.6.17.8/include/asm-generic/errno.h
*/
static int bsd_to_linux_errno[ELAST + 1] = {
-0, -1, -2, -3, -4, -5, -6, -7, -8, -9,
-10, -35, -12, -13, -14, -15, -16, -17, -18, -19,
-20, -21, -22, -23, -24, -25, -26, -27, -28, -29,
-30, -31, -32, -33, -34, -11,-115,-114, -88, -89,
-90, -91, -92, -93, -94, -95, -96, -97, -98, -99,
-100,-101,-102,-103,-104,-105,-106,-107,-108,-109,
-110,-111, -40, -36,-112,-113, -39, -11, -87,-122,
-116, -66, -6, -6, -6, -6, -6, -37, -38, -9,
-6, -6, -43, -42, -75,-125, -84, -61, -16, -74,
-72, -67, -71
};
#endif
#include <contrib/cloudabi/cloudabi_types_common.h>
static const int cloudabi_errno_table[] = {
[CLOUDABI_E2BIG] = E2BIG,
[CLOUDABI_EACCES] = EACCES,
[CLOUDABI_EADDRINUSE] = EADDRINUSE,
[CLOUDABI_EADDRNOTAVAIL] = EADDRNOTAVAIL,
[CLOUDABI_EAFNOSUPPORT] = EAFNOSUPPORT,
[CLOUDABI_EAGAIN] = EAGAIN,
[CLOUDABI_EALREADY] = EALREADY,
[CLOUDABI_EBADF] = EBADF,
[CLOUDABI_EBADMSG] = EBADMSG,
[CLOUDABI_EBUSY] = EBUSY,
[CLOUDABI_ECANCELED] = ECANCELED,
[CLOUDABI_ECHILD] = ECHILD,
[CLOUDABI_ECONNABORTED] = ECONNABORTED,
[CLOUDABI_ECONNREFUSED] = ECONNREFUSED,
[CLOUDABI_ECONNRESET] = ECONNRESET,
[CLOUDABI_EDEADLK] = EDEADLK,
[CLOUDABI_EDESTADDRREQ] = EDESTADDRREQ,
[CLOUDABI_EDOM] = EDOM,
[CLOUDABI_EDQUOT] = EDQUOT,
[CLOUDABI_EEXIST] = EEXIST,
[CLOUDABI_EFAULT] = EFAULT,
[CLOUDABI_EFBIG] = EFBIG,
[CLOUDABI_EHOSTUNREACH] = EHOSTUNREACH,
[CLOUDABI_EIDRM] = EIDRM,
[CLOUDABI_EILSEQ] = EILSEQ,
[CLOUDABI_EINPROGRESS] = EINPROGRESS,
[CLOUDABI_EINTR] = EINTR,
[CLOUDABI_EINVAL] = EINVAL,
[CLOUDABI_EIO] = EIO,
[CLOUDABI_EISCONN] = EISCONN,
[CLOUDABI_EISDIR] = EISDIR,
[CLOUDABI_ELOOP] = ELOOP,
[CLOUDABI_EMFILE] = EMFILE,
[CLOUDABI_EMLINK] = EMLINK,
[CLOUDABI_EMSGSIZE] = EMSGSIZE,
[CLOUDABI_EMULTIHOP] = EMULTIHOP,
[CLOUDABI_ENAMETOOLONG] = ENAMETOOLONG,
[CLOUDABI_ENETDOWN] = ENETDOWN,
[CLOUDABI_ENETRESET] = ENETRESET,
[CLOUDABI_ENETUNREACH] = ENETUNREACH,
[CLOUDABI_ENFILE] = ENFILE,
[CLOUDABI_ENOBUFS] = ENOBUFS,
[CLOUDABI_ENODEV] = ENODEV,
[CLOUDABI_ENOENT] = ENOENT,
[CLOUDABI_ENOEXEC] = ENOEXEC,
[CLOUDABI_ENOLCK] = ENOLCK,
[CLOUDABI_ENOLINK] = ENOLINK,
[CLOUDABI_ENOMEM] = ENOMEM,
[CLOUDABI_ENOMSG] = ENOMSG,
[CLOUDABI_ENOPROTOOPT] = ENOPROTOOPT,
[CLOUDABI_ENOSPC] = ENOSPC,
[CLOUDABI_ENOSYS] = ENOSYS,
[CLOUDABI_ENOTCONN] = ENOTCONN,
[CLOUDABI_ENOTDIR] = ENOTDIR,
[CLOUDABI_ENOTEMPTY] = ENOTEMPTY,
[CLOUDABI_ENOTRECOVERABLE] = ENOTRECOVERABLE,
[CLOUDABI_ENOTSOCK] = ENOTSOCK,
[CLOUDABI_ENOTSUP] = ENOTSUP,
[CLOUDABI_ENOTTY] = ENOTTY,
[CLOUDABI_ENXIO] = ENXIO,
[CLOUDABI_EOVERFLOW] = EOVERFLOW,
[CLOUDABI_EOWNERDEAD] = EOWNERDEAD,
[CLOUDABI_EPERM] = EPERM,
[CLOUDABI_EPIPE] = EPIPE,
[CLOUDABI_EPROTO] = EPROTO,
[CLOUDABI_EPROTONOSUPPORT] = EPROTONOSUPPORT,
[CLOUDABI_EPROTOTYPE] = EPROTOTYPE,
[CLOUDABI_ERANGE] = ERANGE,
[CLOUDABI_EROFS] = EROFS,
[CLOUDABI_ESPIPE] = ESPIPE,
[CLOUDABI_ESRCH] = ESRCH,
[CLOUDABI_ESTALE] = ESTALE,
[CLOUDABI_ETIMEDOUT] = ETIMEDOUT,
[CLOUDABI_ETXTBSY] = ETXTBSY,
[CLOUDABI_EXDEV] = EXDEV,
[CLOUDABI_ENOTCAPABLE] = ENOTCAPABLE,
};
int
sysdecode_abi_to_freebsd_errno(enum sysdecode_abi abi, int error)
{
switch (abi) {
case SYSDECODE_ABI_FREEBSD:
case SYSDECODE_ABI_FREEBSD32:
return (error);
#if defined(__i386__) || defined(__amd64__)
case SYSDECODE_ABI_LINUX:
case SYSDECODE_ABI_LINUX32: {
unsigned int i;
/*
* This is imprecise since it returns the first
* matching errno.
*/
for (i = 0; i < nitems(bsd_to_linux_errno); i++) {
if (error == bsd_to_linux_errno[i])
return (i);
}
break;
}
#endif
case SYSDECODE_ABI_CLOUDABI32:
case SYSDECODE_ABI_CLOUDABI64:
if (error >= 0 &&
(unsigned int)error < nitems(cloudabi_errno_table))
return (cloudabi_errno_table[error]);
break;
default:
break;
}
return (INT_MAX);
}
int
sysdecode_freebsd_to_abi_errno(enum sysdecode_abi abi, int error)
{
switch (abi) {
case SYSDECODE_ABI_FREEBSD:
case SYSDECODE_ABI_FREEBSD32:
return (error);
#if defined(__i386__) || defined(__amd64__)
case SYSDECODE_ABI_LINUX:
case SYSDECODE_ABI_LINUX32:
if (error >= 0 && error <= ELAST)
return (bsd_to_linux_errno[error]);
break;
#endif
case SYSDECODE_ABI_CLOUDABI32:
case SYSDECODE_ABI_CLOUDABI64: {
unsigned int i;
for (i = 0; i < nitems(cloudabi_errno_table); i++) {
if (error == cloudabi_errno_table[i])
return (i);
}
break;
}
default:
break;
}
return (INT_MAX);
}
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