diff options
Diffstat (limited to 'nuttx/libc/string/lib_strerror.c')
| -rw-r--r-- | nuttx/libc/string/lib_strerror.c | 375 |
1 files changed, 375 insertions, 0 deletions
diff --git a/nuttx/libc/string/lib_strerror.c b/nuttx/libc/string/lib_strerror.c new file mode 100644 index 000000000..0c7ca28fd --- /dev/null +++ b/nuttx/libc/string/lib_strerror.c @@ -0,0 +1,375 @@ +/************************************************************************ + * libc/string/lib_strerror.c + * + * Copyright (C) 2007, 2009, 2011-2012 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt <gnutt@nuttx.org> + * + * 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. + * 3. Neither the name NuttX nor the names of its contributors may be + * used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 + * COPYRIGHT OWNER 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. + * + ************************************************************************/ + +/************************************************************************ + * Included Files + ************************************************************************/ + +#include <nuttx/config.h> + +#include <stdint.h> +#include <string.h> +#include <errno.h> + +/************************************************************************ + * Definitions + ************************************************************************/ + +/************************************************************************ + * Private Types + ************************************************************************/ + +struct errno_strmap_s +{ + uint8_t errnum; + const char *str; +}; + +/************************************************************************ + * Private Data + ************************************************************************/ + +#ifdef CONFIG_LIBC_STRERROR + +/* This table maps all error numbers to descriptive strings. + * The only assumption that the code makes with regard to this + * this table is that it is ordered by error number. + * + * The size of this table is quite large. Its size can be + * reduced by eliminating some of the more obscure error + * strings. + */ + +#ifndef CONFIG_LIBC_STRERROR_SHORT + +static const struct errno_strmap_s g_errnomap[] = +{ + { EPERM, EPERM_STR }, + { ENOENT, ENOENT_STR }, + { ESRCH, ESRCH_STR }, + { EINTR, EINTR_STR }, + { EIO, EIO_STR }, + { ENXIO, ENXIO_STR }, + { E2BIG, E2BIG_STR }, + { ENOEXEC, ENOEXEC_STR }, + { EBADF, EBADF_STR }, + { ECHILD, ECHILD_STR }, + { EAGAIN, EAGAIN_STR }, + { ENOMEM, ENOMEM_STR }, + { EACCES, EACCES_STR }, + { EFAULT, EFAULT_STR }, + { ENOTBLK, ENOTBLK_STR }, + { EBUSY, EBUSY_STR }, + { EEXIST, EEXIST_STR }, + { EXDEV, EXDEV_STR }, + { ENODEV, ENODEV_STR }, + { ENOTDIR, ENOTDIR_STR }, + { EISDIR, EISDIR_STR }, + { EINVAL, EINVAL_STR }, + { ENFILE, ENFILE_STR }, + { EMFILE, EMFILE_STR }, + { ENOTTY, ENOTTY_STR }, + { ETXTBSY, ETXTBSY_STR }, + { EFBIG, EFBIG_STR }, + { ENOSPC, ENOSPC_STR }, + { ESPIPE, ESPIPE_STR }, + { EROFS, EROFS_STR }, + { EMLINK, EMLINK_STR }, + { EPIPE, EPIPE_STR }, + { EDOM, EDOM_STR }, + { ERANGE, ERANGE_STR }, + { EDEADLK, EDEADLK_STR }, + { ENAMETOOLONG, ENAMETOOLONG_STR }, + { ENOLCK, ENOLCK_STR }, + { ENOSYS, ENOSYS_STR }, + { ENOTEMPTY, ENOTEMPTY_STR }, + { ELOOP, ELOOP_STR }, + { ENOMSG, ENOMSG_STR }, + { EIDRM, EIDRM_STR }, + { ECHRNG, ECHRNG_STR }, + { EL2NSYNC, EL2NSYNC_STR }, + { EL3HLT, EL3HLT_STR }, + { EL3RST, EL3RST_STR }, + { ELNRNG, ELNRNG_STR }, + { EUNATCH, EUNATCH_STR }, + { ENOCSI, ENOCSI_STR }, + { EL2HLT, EL2HLT_STR }, + { EBADE, EBADE_STR }, + { EBADR, EBADR_STR }, + { EXFULL, EXFULL_STR }, + { ENOANO, ENOANO_STR }, + { EBADRQC, EBADRQC_STR }, + { EBADSLT, EBADSLT_STR }, + { EBFONT, EBFONT_STR }, + { ENOSTR, ENOSTR_STR }, + { ENODATA, ENODATA_STR }, + { ETIME, ETIME_STR }, + { ENOSR, ENOSR_STR }, + { ENONET, ENONET_STR }, + { ENOPKG, ENOPKG_STR }, + { EREMOTE, EREMOTE_STR }, + { ENOLINK, ENOLINK_STR }, + { EADV, EADV_STR }, + { ESRMNT, ESRMNT_STR }, + { ECOMM, ECOMM_STR }, + { EPROTO, EPROTO_STR }, + { EMULTIHOP, EMULTIHOP_STR }, + { EDOTDOT, EDOTDOT_STR }, + { EBADMSG, EBADMSG_STR }, + { EOVERFLOW, EOVERFLOW_STR }, + { ENOTUNIQ, ENOTUNIQ_STR }, + { EBADFD, EBADFD_STR }, + { EREMCHG, EREMCHG_STR }, + { ELIBACC, ELIBACC_STR }, + { ELIBBAD, ELIBBAD_STR }, + { ELIBSCN, ELIBSCN_STR }, + { ELIBMAX, ELIBMAX_STR }, + { ELIBEXEC, ELIBEXEC_STR }, + { EILSEQ, EILSEQ_STR }, + { ERESTART, ERESTART_STR }, + { ESTRPIPE, ESTRPIPE_STR }, + { EUSERS, EUSERS_STR }, + { ENOTSOCK, ENOTSOCK_STR }, + { EDESTADDRREQ, EDESTADDRREQ_STR }, + { EMSGSIZE, EMSGSIZE_STR }, + { EPROTOTYPE, EPROTOTYPE_STR }, + { ENOPROTOOPT, ENOPROTOOPT_STR }, + { EPROTONOSUPPORT, EPROTONOSUPPORT_STR }, + { ESOCKTNOSUPPORT, ESOCKTNOSUPPORT_STR }, + { EOPNOTSUPP, EOPNOTSUPP_STR }, + { EPFNOSUPPORT, EPFNOSUPPORT_STR }, + { EAFNOSUPPORT, EAFNOSUPPORT_STR }, + { EADDRINUSE, EADDRINUSE_STR }, + { EADDRNOTAVAIL, EADDRNOTAVAIL_STR }, + { ENETDOWN, ENETDOWN_STR }, + { ENETUNREACH, ENETUNREACH_STR }, + { ENETRESET, ENETRESET_STR }, + { ECONNABORTED, ECONNABORTED_STR }, + { ECONNRESET, ECONNRESET_STR }, + { ENOBUFS, ENOBUFS_STR }, + { EISCONN, EISCONN_STR }, + { ENOTCONN, ENOTCONN_STR }, + { ESHUTDOWN, ESHUTDOWN_STR }, + { ETOOMANYREFS, ETOOMANYREFS_STR }, + { ETIMEDOUT, ETIMEDOUT_STR }, + { ECONNREFUSED, ECONNREFUSED_STR }, + { EHOSTDOWN, EHOSTDOWN_STR }, + { EHOSTUNREACH, EHOSTUNREACH_STR }, + { EALREADY, EALREADY_STR }, + { EINPROGRESS, EINPROGRESS_STR }, + { ESTALE, ESTALE_STR }, + { EUCLEAN, EUCLEAN_STR }, + { ENOTNAM, ENOTNAM_STR }, + { ENAVAIL, ENAVAIL_STR }, + { EISNAM, EISNAM_STR }, + { EREMOTEIO, EREMOTEIO_STR }, + { EDQUOT, EDQUOT_STR }, + { ENOMEDIUM, ENOMEDIUM_STR }, + { EMEDIUMTYPE, EMEDIUMTYPE_STR } +}; + +#else /* CONFIG_LIBC_STRERROR_SHORT */ + +static const struct errno_strmap_s g_errnomap[] = +{ + { EPERM, "EPERM" }, + { ENOENT, "ENOENT" }, + { ESRCH, "ESRCH" }, + { EINTR, "EINTR" }, + { EIO, "EIO" }, + { ENXIO, "ENXIO" }, + { E2BIG, "E2BIG" }, + { ENOEXEC, "ENOEXEC" }, + { EBADF, "EBADF" }, + { ECHILD, "ECHILD" }, + { EAGAIN, "EAGAIN" }, + { ENOMEM, "ENOMEM" }, + { EACCES, "EACCES" }, + { EFAULT, "EFAULT" }, + { ENOTBLK, "ENOTBLK" }, + { EBUSY, "EBUSY" }, + { EEXIST, "EEXIST" }, + { EXDEV, "EXDEV" }, + { ENODEV, "ENODEV" }, + { ENOTDIR, "ENOTDIR" }, + { EISDIR, "EISDIR" }, + { EINVAL, "EINVAL" }, + { ENFILE, "ENFILE" }, + { EMFILE, "EMFILE" }, + { ENOTTY, "ENOTTY" }, + { ETXTBSY, "ETXTBSY" }, + { EFBIG, "EFBIG" }, + { ENOSPC, "ENOSPC" }, + { ESPIPE, "ESPIPE" }, + { EROFS, "EROFS" }, + { EMLINK, "EMLINK" }, + { EPIPE, "EPIPE" }, + { EDOM, "EDOM" }, + { ERANGE, "ERANGE" }, + { EDEADLK, "EDEADLK" }, + { ENAMETOOLONG, "ENAMETOOLONG" }, + { ENOLCK, "ENOLCK" }, + { ENOSYS, "ENOSYS" }, + { ENOTEMPTY, "ENOTEMPTY" }, + { ELOOP, "ELOOP" }, + { ENOMSG, "ENOMSG" }, + { EIDRM, "EIDRM" }, + { ECHRNG, "ECHRNG" }, + { EL2NSYNC, "EL2NSYNC" }, + { EL3HLT, "EL3HLT" }, + { EL3RST, "EL3RST" }, + { EL3RST, "EL3RST" }, + { EUNATCH, "EUNATCH" }, + { ENOCSI, "ENOCSI" }, + { EL2HLT, "EL2HLT" }, + { EBADE, "EBADE" }, + { EBADR, "EBADR" }, + { EXFULL, "EXFULL" }, + { ENOANO, "ENOANO" }, + { EBADRQC, "EBADRQC" }, + { EBADSLT, "EBADSLT" }, + { EBFONT, "EBFONT" }, + { ENOSTR, "ENOSTR" }, + { ENODATA, "ENODATA" }, + { ETIME, "ETIME" }, + { ENOSR, "ENOSR" }, + { ENONET, "ENONET" }, + { ENOPKG, "ENOPKG" }, + { EREMOTE, "EREMOTE" }, + { ENOLINK, "ENOLINK" }, + { EADV, "EADV" }, + { ESRMNT, "ESRMNT" }, + { ECOMM, "ECOMM" }, + { EPROTO, "EPROTO" }, + { EMULTIHOP, "EMULTIHOP" }, + { EDOTDOT, "EDOTDOT" }, + { EBADMSG, "EBADMSG" }, + { EOVERFLOW, "EOVERFLOW" }, + { ENOTUNIQ, "ENOTUNIQ" }, + { EBADFD, "EBADFD" }, + { EREMCHG, "EREMCHG" }, + { ELIBACC, "ELIBACC" }, + { ELIBBAD, "ELIBBAD" }, + { ELIBSCN, "ELIBSCN" }, + { ELIBMAX, "ELIBMAX" }, + { ELIBEXEC, "ELIBEXEC" }, + { EILSEQ, "EILSEQ" }, + { ERESTART, "ERESTART" }, + { ESTRPIPE, "ESTRPIPE" }, + { EUSERS, "EUSERS" }, + { ENOTSOCK, "ENOTSOCK" }, + { EDESTADDRREQ, "EDESTADDRREQ" }, + { EMSGSIZE, "EMSGSIZE" }, + { EPROTOTYPE, "EPROTOTYPE" }, + { ENOPROTOOPT, "ENOPROTOOPT" }, + { EPROTONOSUPPORT, "EPROTONOSUPPORT" }, + { ESOCKTNOSUPPORT, "ESOCKTNOSUPPORT" }, + { EOPNOTSUPP, "EOPNOTSUPP" }, + { 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"; +} |