412 lines
17 KiB
C
412 lines
17 KiB
C
/****************************************************************************
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* libs/libc/string/lib_strerror.c
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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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 <stdio.h>
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#include <string.h>
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#include <errno.h>
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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#define STRERROR_UNKNOWN "Unknown error"
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#define STRERROR_BUFSIZE sizeof(STRERROR_UNKNOWN " 2000")
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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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FAR 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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{ 0, "Success" },
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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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{ ECANCELED, ECANCELED_STR },
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{ ENOKEY, ENOKEY_STR },
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{ EKEYEXPIRED, EKEYEXPIRED_STR },
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{ EKEYREVOKED, EKEYREVOKED_STR },
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{ EKEYREJECTED, EKEYREJECTED_STR },
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{ EOWNERDEAD, EOWNERDEAD_STR },
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{ ENOTRECOVERABLE, ENOTRECOVERABLE_STR },
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{ ERFKILL, ERFKILL_STR },
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{ EHWPOISON, EHWPOISON_STR },
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{ ELBIN, ELBIN_STR },
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{ EFTYPE, EFTYPE_STR },
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{ ENMFILE, ENMFILE_STR },
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{ EPROCLIM, EPROCLIM_STR },
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{ ENOTSUP, ENOTSUP_STR },
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{ ENOSHARE, ENOSHARE_STR },
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{ ECASECLASH, ECASECLASH_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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{ 0, "OK" },
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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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{ ELNRNG, "ELNRNG" },
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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" },
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{ EAFNOSUPPORT, "EAFNOSUPPORT" },
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{ EADDRINUSE, "EADDRINUSE" },
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{ EADDRNOTAVAIL, "EADDRNOTAVAIL" },
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{ ENETDOWN, "ENETDOWN" },
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{ ENETUNREACH, "ENETUNREACH" },
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{ ENETRESET, "ENETRESET" },
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{ ECONNABORTED, "ECONNABORTED" },
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{ ECONNRESET, "ECONNRESET" },
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{ ENOBUFS, "ENOBUFS" },
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{ EISCONN, "EISCONN" },
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{ ENOTCONN, "ENOTCONN" },
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{ ESHUTDOWN, "ESHUTDOWN" },
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{ ETOOMANYREFS, "ETOOMANYREFS" },
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{ ETIMEDOUT, "ETIMEDOUT" },
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{ ECONNREFUSED, "ECONNREFUSED" },
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{ EHOSTDOWN, "EHOSTDOWN" },
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{ EHOSTUNREACH, "EHOSTUNREACH" },
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{ EALREADY, "EALREADY" },
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{ EINPROGRESS, "EINPROGRESS" },
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{ ESTALE, "ESTALE" },
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{ EUCLEAN, "EUCLEAN" },
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{ ENOTNAM, "ENOTNAM" },
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{ ENAVAIL, "ENAVAIL" },
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{ EISNAM, "EISNAM" },
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{ EREMOTEIO, "EREMOTEIO" },
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{ EDQUOT, "EDQUOT" },
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{ ENOMEDIUM, "ENOMEDIUM" },
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{ EMEDIUMTYPE, "EMEDIUMTYPE" },
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{ ECANCELED, "ECANCELED" },
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{ ENOKEY, "ENOKEY" },
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{ EKEYEXPIRED, "EKEYEXPIRED" },
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{ EKEYREVOKED, "EKEYREVOKED" },
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{ EKEYREJECTED, "EKEYREJECTED" },
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{ EOWNERDEAD, "EOWNERDEAD" },
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{ ENOTRECOVERABLE, "ENOTRECOVERABLE" },
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{ ERFKILL, "ERFKILL" },
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{ EHWPOISON, "EHWPOISON" },
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{ ELBIN, "ELBIN" },
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{ EFTYPE, "EFTYPE" },
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{ ENMFILE, "ENMFILE" },
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{ EPROCLIM, "EPROCLIM" },
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{ ENOTSUP, "ENOTSUP" },
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{ ENOSHARE, "ENOSHARE" },
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{ ECASECLASH, "ECASECLASH" }
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};
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#endif /* CONFIG_LIBC_STRERROR_SHORT */
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#define NERRNO_STRS (sizeof(g_errnomap) / sizeof(struct errno_strmap_s))
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#endif /* CONFIG_LIBC_STRERROR */
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: strerror
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****************************************************************************/
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FAR char *strerror(int errnum)
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{
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#ifdef CONFIG_LIBC_STRERROR_ERRNUM
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static char s_err[STRERROR_BUFSIZE];
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#endif
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#ifdef CONFIG_LIBC_STRERROR
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int ndxlow = 0;
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int ndxhi = NERRNO_STRS - 1;
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int ndxmid;
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do
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{
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ndxmid = (ndxlow + ndxhi) >> 1;
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if (errnum > g_errnomap[ndxmid].errnum)
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{
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ndxlow = ndxmid + 1;
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}
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else if (errnum < g_errnomap[ndxmid].errnum)
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{
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ndxhi = ndxmid - 1;
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}
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else
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{
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return g_errnomap[ndxmid].str;
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}
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}
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while (ndxlow <= ndxhi);
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#endif
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#ifdef CONFIG_LIBC_STRERROR_ERRNUM
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if (snprintf(s_err, sizeof(s_err), STRERROR_UNKNOWN " %d", errnum)
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< sizeof(s_err))
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{
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return s_err;
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}
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#elif !defined(CONFIG_LIBC_STRERROR)
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UNUSED(errnum);
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#endif
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return STRERROR_UNKNOWN;
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}
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