2012-11-10 12:06:01 -04:00
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/************************************************************************
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2012-11-10 12:34:46 -04:00
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* libc/string/lib_strerror.c
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2012-11-10 12:06:01 -04:00
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*
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* Copyright (C) 2007, 2009, 2011-2012 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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************************************************************************/
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/************************************************************************
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* Included Files
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************************************************************************/
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#include <nuttx/config.h>
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#include <stdint.h>
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#include <string.h>
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#include <errno.h>
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/************************************************************************
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* Definitions
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************************************************************************/
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/************************************************************************
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* Private Types
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************************************************************************/
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struct errno_strmap_s
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{
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uint8_t errnum;
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const char *str;
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};
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/************************************************************************
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* Private Data
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************************************************************************/
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#ifdef CONFIG_LIBC_STRERROR
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/* This table maps all error numbers to descriptive strings.
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* The only assumption that the code makes with regard to this
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* this table is that it is ordered by error number.
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*
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* The size of this table is quite large. Its size can be
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* reduced by eliminating some of the more obscure error
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* strings.
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*/
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#ifndef CONFIG_LIBC_STRERROR_SHORT
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static const struct errno_strmap_s g_errnomap[] =
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{
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{ EPERM, EPERM_STR },
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{ ENOENT, ENOENT_STR },
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{ ESRCH, ESRCH_STR },
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{ EINTR, EINTR_STR },
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{ EIO, EIO_STR },
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{ ENXIO, ENXIO_STR },
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{ E2BIG, E2BIG_STR },
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{ ENOEXEC, ENOEXEC_STR },
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{ EBADF, EBADF_STR },
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{ ECHILD, ECHILD_STR },
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{ EAGAIN, EAGAIN_STR },
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{ ENOMEM, ENOMEM_STR },
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{ EACCES, EACCES_STR },
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{ EFAULT, EFAULT_STR },
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{ ENOTBLK, ENOTBLK_STR },
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{ EBUSY, EBUSY_STR },
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{ EEXIST, EEXIST_STR },
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{ EXDEV, EXDEV_STR },
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{ ENODEV, ENODEV_STR },
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{ ENOTDIR, ENOTDIR_STR },
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{ EISDIR, EISDIR_STR },
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{ EINVAL, EINVAL_STR },
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{ ENFILE, ENFILE_STR },
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{ EMFILE, EMFILE_STR },
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{ ENOTTY, ENOTTY_STR },
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{ ETXTBSY, ETXTBSY_STR },
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{ EFBIG, EFBIG_STR },
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{ ENOSPC, ENOSPC_STR },
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{ ESPIPE, ESPIPE_STR },
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{ EROFS, EROFS_STR },
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{ EMLINK, EMLINK_STR },
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{ EPIPE, EPIPE_STR },
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{ EDOM, EDOM_STR },
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{ ERANGE, ERANGE_STR },
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{ EDEADLK, EDEADLK_STR },
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{ ENAMETOOLONG, ENAMETOOLONG_STR },
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{ ENOLCK, ENOLCK_STR },
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{ ENOSYS, ENOSYS_STR },
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{ ENOTEMPTY, ENOTEMPTY_STR },
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{ ELOOP, ELOOP_STR },
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{ ENOMSG, ENOMSG_STR },
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{ EIDRM, EIDRM_STR },
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{ ECHRNG, ECHRNG_STR },
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{ EL2NSYNC, EL2NSYNC_STR },
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{ EL3HLT, EL3HLT_STR },
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{ EL3RST, EL3RST_STR },
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{ ELNRNG, ELNRNG_STR },
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{ EUNATCH, EUNATCH_STR },
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{ ENOCSI, ENOCSI_STR },
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{ EL2HLT, EL2HLT_STR },
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{ EBADE, EBADE_STR },
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{ EBADR, EBADR_STR },
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{ EXFULL, EXFULL_STR },
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{ ENOANO, ENOANO_STR },
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{ EBADRQC, EBADRQC_STR },
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{ EBADSLT, EBADSLT_STR },
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{ EBFONT, EBFONT_STR },
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{ ENOSTR, ENOSTR_STR },
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{ ENODATA, ENODATA_STR },
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{ ETIME, ETIME_STR },
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{ ENOSR, ENOSR_STR },
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{ ENONET, ENONET_STR },
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{ ENOPKG, ENOPKG_STR },
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{ EREMOTE, EREMOTE_STR },
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{ ENOLINK, ENOLINK_STR },
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{ EADV, EADV_STR },
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{ ESRMNT, ESRMNT_STR },
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{ ECOMM, ECOMM_STR },
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{ EPROTO, EPROTO_STR },
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{ EMULTIHOP, EMULTIHOP_STR },
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{ EDOTDOT, EDOTDOT_STR },
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{ EBADMSG, EBADMSG_STR },
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{ EOVERFLOW, EOVERFLOW_STR },
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{ ENOTUNIQ, ENOTUNIQ_STR },
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{ EBADFD, EBADFD_STR },
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{ EREMCHG, EREMCHG_STR },
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{ ELIBACC, ELIBACC_STR },
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{ ELIBBAD, ELIBBAD_STR },
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{ ELIBSCN, ELIBSCN_STR },
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{ ELIBMAX, ELIBMAX_STR },
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{ ELIBEXEC, ELIBEXEC_STR },
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{ EILSEQ, EILSEQ_STR },
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{ ERESTART, ERESTART_STR },
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{ ESTRPIPE, ESTRPIPE_STR },
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{ EUSERS, EUSERS_STR },
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{ ENOTSOCK, ENOTSOCK_STR },
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{ EDESTADDRREQ, EDESTADDRREQ_STR },
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{ EMSGSIZE, EMSGSIZE_STR },
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{ EPROTOTYPE, EPROTOTYPE_STR },
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{ ENOPROTOOPT, ENOPROTOOPT_STR },
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{ EPROTONOSUPPORT, EPROTONOSUPPORT_STR },
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{ ESOCKTNOSUPPORT, ESOCKTNOSUPPORT_STR },
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{ EOPNOTSUPP, EOPNOTSUPP_STR },
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{ EPFNOSUPPORT, EPFNOSUPPORT_STR },
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{ EAFNOSUPPORT, EAFNOSUPPORT_STR },
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{ EADDRINUSE, EADDRINUSE_STR },
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{ EADDRNOTAVAIL, EADDRNOTAVAIL_STR },
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{ ENETDOWN, ENETDOWN_STR },
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{ ENETUNREACH, ENETUNREACH_STR },
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{ ENETRESET, ENETRESET_STR },
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{ ECONNABORTED, ECONNABORTED_STR },
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{ ECONNRESET, ECONNRESET_STR },
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{ ENOBUFS, ENOBUFS_STR },
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{ EISCONN, EISCONN_STR },
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{ ENOTCONN, ENOTCONN_STR },
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{ ESHUTDOWN, ESHUTDOWN_STR },
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{ ETOOMANYREFS, ETOOMANYREFS_STR },
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{ ETIMEDOUT, ETIMEDOUT_STR },
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{ ECONNREFUSED, ECONNREFUSED_STR },
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{ EHOSTDOWN, EHOSTDOWN_STR },
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{ EHOSTUNREACH, EHOSTUNREACH_STR },
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{ EALREADY, EALREADY_STR },
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{ EINPROGRESS, EINPROGRESS_STR },
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{ ESTALE, ESTALE_STR },
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{ EUCLEAN, EUCLEAN_STR },
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{ ENOTNAM, ENOTNAM_STR },
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{ ENAVAIL, ENAVAIL_STR },
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{ EISNAM, EISNAM_STR },
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{ EREMOTEIO, EREMOTEIO_STR },
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{ EDQUOT, EDQUOT_STR },
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{ ENOMEDIUM, ENOMEDIUM_STR },
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{ EMEDIUMTYPE, EMEDIUMTYPE_STR }
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};
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#else /* CONFIG_LIBC_STRERROR_SHORT */
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static const struct errno_strmap_s g_errnomap[] =
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{
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{ EPERM, "EPERM" },
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{ ENOENT, "ENOENT" },
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{ ESRCH, "ESRCH" },
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{ EINTR, "EINTR" },
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{ EIO, "EIO" },
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{ ENXIO, "ENXIO" },
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{ E2BIG, "E2BIG" },
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{ ENOEXEC, "ENOEXEC" },
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{ EBADF, "EBADF" },
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{ ECHILD, "ECHILD" },
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{ EAGAIN, "EAGAIN" },
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{ ENOMEM, "ENOMEM" },
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{ EACCES, "EACCES" },
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{ EFAULT, "EFAULT" },
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{ ENOTBLK, "ENOTBLK" },
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{ EBUSY, "EBUSY" },
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{ EEXIST, "EEXIST" },
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{ EXDEV, "EXDEV" },
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{ ENODEV, "ENODEV" },
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{ ENOTDIR, "ENOTDIR" },
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{ EISDIR, "EISDIR" },
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{ EINVAL, "EINVAL" },
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{ ENFILE, "ENFILE" },
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{ EMFILE, "EMFILE" },
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{ ENOTTY, "ENOTTY" },
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{ ETXTBSY, "ETXTBSY" },
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{ EFBIG, "EFBIG" },
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{ ENOSPC, "ENOSPC" },
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{ ESPIPE, "ESPIPE" },
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{ EROFS, "EROFS" },
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{ EMLINK, "EMLINK" },
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{ EPIPE, "EPIPE" },
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{ EDOM, "EDOM" },
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{ ERANGE, "ERANGE" },
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{ EDEADLK, "EDEADLK" },
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{ ENAMETOOLONG, "ENAMETOOLONG" },
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{ ENOLCK, "ENOLCK" },
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{ ENOSYS, "ENOSYS" },
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{ ENOTEMPTY, "ENOTEMPTY" },
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{ ELOOP, "ELOOP" },
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{ ENOMSG, "ENOMSG" },
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{ EIDRM, "EIDRM" },
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{ ECHRNG, "ECHRNG" },
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{ EL2NSYNC, "EL2NSYNC" },
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{ EL3HLT, "EL3HLT" },
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{ EL3RST, "EL3RST" },
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{ EL3RST, "EL3RST" },
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{ EUNATCH, "EUNATCH" },
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{ ENOCSI, "ENOCSI" },
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{ EL2HLT, "EL2HLT" },
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{ EBADE, "EBADE" },
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{ EBADR, "EBADR" },
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{ EXFULL, "EXFULL" },
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{ ENOANO, "ENOANO" },
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{ EBADRQC, "EBADRQC" },
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{ EBADSLT, "EBADSLT" },
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{ EBFONT, "EBFONT" },
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{ ENOSTR, "ENOSTR" },
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{ ENODATA, "ENODATA" },
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{ ETIME, "ETIME" },
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{ ENOSR, "ENOSR" },
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{ ENONET, "ENONET" },
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{ ENOPKG, "ENOPKG" },
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{ EREMOTE, "EREMOTE" },
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{ ENOLINK, "ENOLINK" },
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{ EADV, "EADV" },
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{ ESRMNT, "ESRMNT" },
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{ ECOMM, "ECOMM" },
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{ EPROTO, "EPROTO" },
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{ EMULTIHOP, "EMULTIHOP" },
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{ EDOTDOT, "EDOTDOT" },
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{ EBADMSG, "EBADMSG" },
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{ EOVERFLOW, "EOVERFLOW" },
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{ ENOTUNIQ, "ENOTUNIQ" },
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{ EBADFD, "EBADFD" },
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{ EREMCHG, "EREMCHG" },
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{ ELIBACC, "ELIBACC" },
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{ ELIBBAD, "ELIBBAD" },
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{ ELIBSCN, "ELIBSCN" },
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{ ELIBMAX, "ELIBMAX" },
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{ ELIBEXEC, "ELIBEXEC" },
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{ EILSEQ, "EILSEQ" },
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{ ERESTART, "ERESTART" },
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{ ESTRPIPE, "ESTRPIPE" },
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{ EUSERS, "EUSERS" },
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{ ENOTSOCK, "ENOTSOCK" },
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{ EDESTADDRREQ, "EDESTADDRREQ" },
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{ EMSGSIZE, "EMSGSIZE" },
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{ EPROTOTYPE, "EPROTOTYPE" },
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{ ENOPROTOOPT, "ENOPROTOOPT" },
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{ EPROTONOSUPPORT, "EPROTONOSUPPORT" },
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{ ESOCKTNOSUPPORT, "ESOCKTNOSUPPORT" },
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{ EOPNOTSUPP, "EOPNOTSUPP" },
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{ EPFNOSUPPORT, "EPFNOSUPPORT" },
|
|
|
|
|
{ EAFNOSUPPORT, "EAFNOSUPPORT" },
|
|
|
|
|
{ EADDRINUSE, "EADDRINUSE" },
|
|
|
|
|
{ EADDRNOTAVAIL, "EADDRNOTAVAIL" },
|
|
|
|
|
{ ENETDOWN, "ENETDOWN" },
|
|
|
|
|
{ ENETUNREACH, "ENETUNREACH" },
|
|
|
|
|
{ ENETRESET, "ENETRESET" },
|
|
|
|
|
{ ECONNABORTED, "ECONNABORTED" },
|
|
|
|
|
{ ECONNRESET, "ECONNRESET" },
|
|
|
|
|
{ ENOBUFS, "ENOBUFS" },
|
|
|
|
|
{ EISCONN, "EISCONN" },
|
|
|
|
|
{ ENOTCONN, "ENOTCONN" },
|
|
|
|
|
{ ESHUTDOWN, "ESHUTDOWN" },
|
|
|
|
|
{ ETOOMANYREFS, "ETOOMANYREFS" },
|
|
|
|
|
{ ETIMEDOUT, "ETIMEDOUT" },
|
|
|
|
|
{ ECONNREFUSED, "ECONNREFUSED" },
|
|
|
|
|
{ EHOSTDOWN, "EHOSTDOWN" },
|
|
|
|
|
{ EHOSTUNREACH, "EHOSTUNREACH" },
|
|
|
|
|
{ EALREADY, "EALREADY" },
|
|
|
|
|
{ EINPROGRESS, "EINPROGRESS" },
|
|
|
|
|
{ ESTALE, "ESTALE" },
|
|
|
|
|
{ EUCLEAN, "EUCLEAN" },
|
|
|
|
|
{ ENOTNAM, "ENOTNAM" },
|
|
|
|
|
{ ENAVAIL, "ENAVAIL" },
|
|
|
|
|
{ EISNAM, "EISNAM" },
|
|
|
|
|
{ EREMOTEIO, "EREMOTEIO" },
|
|
|
|
|
{ EDQUOT, "EDQUOT" },
|
|
|
|
|
{ ENOMEDIUM, "ENOMEDIUM" },
|
|
|
|
|
{ EMEDIUMTYPE, "EMEDIUMTYPE" }
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
#endif /* CONFIG_LIBC_STRERROR_SHORT */
|
|
|
|
|
|
|
|
|
|
#define NERRNO_STRS (sizeof(g_errnomap) / sizeof(struct errno_strmap_s))
|
|
|
|
|
|
|
|
|
|
#endif /* CONFIG_LIBC_STRERROR */
|
|
|
|
|
|
|
|
|
|
/************************************************************************
|
|
|
|
|
* Private Functions
|
|
|
|
|
************************************************************************/
|
|
|
|
|
|
|
|
|
|
/************************************************************************
|
|
|
|
|
* Public Functions
|
|
|
|
|
************************************************************************/
|
|
|
|
|
|
|
|
|
|
/************************************************************************
|
|
|
|
|
* Name: strerror
|
|
|
|
|
************************************************************************/
|
|
|
|
|
|
|
|
|
|
FAR const char *strerror(int errnum)
|
|
|
|
|
{
|
|
|
|
|
#ifdef CONFIG_LIBC_STRERROR
|
|
|
|
|
int ndxlow = 0;
|
|
|
|
|
int ndxhi = NERRNO_STRS - 1;
|
|
|
|
|
int ndxmid;
|
|
|
|
|
|
|
|
|
|
do
|
|
|
|
|
{
|
|
|
|
|
ndxmid = (ndxlow + ndxhi) >> 1;
|
|
|
|
|
if (errnum > g_errnomap[ndxmid].errnum)
|
|
|
|
|
{
|
|
|
|
|
ndxlow = ndxmid + 1;
|
|
|
|
|
}
|
|
|
|
|
else if (errnum < g_errnomap[ndxmid].errnum)
|
|
|
|
|
{
|
|
|
|
|
ndxhi = ndxmid - 1;
|
|
|
|
|
}
|
|
|
|
|
else
|
|
|
|
|
{
|
|
|
|
|
return g_errnomap[ndxmid].str;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
while (ndxlow <= ndxhi);
|
|
|
|
|
#endif
|
|
|
|
|
return "Unknown error";
|
|
|
|
|
}
|
