strerror.c

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/* Extended support for using errno values.
   Written by Fred Fish.  [e-mail]
   This file is in the public domain.  --Per Bothner.  */

#include "ansidecl.h"
#include "libiberty.h"

#include "config.h"

#ifdef HAVE_SYS_ERRLIST
/* Note that errno.h (not sure what OS) or stdio.h (BSD 4.4, at least)
   might declare sys_errlist in a way that the compiler might consider
   incompatible with our later declaration, perhaps by using const
   attributes.  So we hide the declaration in errno.h (if any) using a
   macro. */
#define sys_errlist sys_errlist__
#endif

#include <stdio.h>
#include <errno.h>

#ifdef HAVE_SYS_ERRLIST
#undef sys_errlist
#endif

/*  Routines imported from standard C runtime libraries. */

#ifdef HAVE_STDLIB_H
#include <stdlib.h>
#else
extern PTR malloc ();
#endif

#ifdef HAVE_STRING_H
#include <string.h>
#else
extern PTR memset ();
#endif

#ifndef MAX
#  define MAX(a,b) ((a) > (b) ? (a) : (b))
#endif

static void init_error_tables PARAMS ((void));

/* Translation table for errno values.  See intro(2) in most UNIX systems
   Programmers Reference Manuals.

   Note that this table is generally only accessed when it is used at runtime
   to initialize errno name and message tables that are indexed by errno
   value.

   Not all of these errnos will exist on all systems.  This table is the only
   thing that should have to be updated as new error numbers are introduced.
   It's sort of ugly, but at least its portable. */

struct error_info
{
  int value;		/* The numeric value from <errno.h> */
  const char *name;	/* The equivalent symbolic value */
#ifndef HAVE_SYS_ERRLIST
  const char *msg;	/* Short message about this value */
#endif
};

#ifndef HAVE_SYS_ERRLIST
#   define ENTRY(value, name, msg)	{value, name, msg}
#else
#   define ENTRY(value, name, msg)	{value, name}
#endif

static const struct error_info error_table[] =
{
#if defined (EPERM)
  ENTRY(EPERM, "EPERM", "Not owner"),
#endif
#if defined (ENOENT)
  ENTRY(ENOENT, "ENOENT", "No such file or directory"),
#endif
#if defined (ESRCH)
  ENTRY(ESRCH, "ESRCH", "No such process"),
#endif
#if defined (EINTR)
  ENTRY(EINTR, "EINTR", "Interrupted system call"),
#endif
#if defined (EIO)
  ENTRY(EIO, "EIO", "I/O error"),
#endif
#if defined (ENXIO)
  ENTRY(ENXIO, "ENXIO", "No such device or address"),
#endif
#if defined (E2BIG)
  ENTRY(E2BIG, "E2BIG", "Arg list too long"),
#endif
#if defined (ENOEXEC)
  ENTRY(ENOEXEC, "ENOEXEC", "Exec format error"),
#endif
#if defined (EBADF)
  ENTRY(EBADF, "EBADF", "Bad file number"),
#endif
#if defined (ECHILD)
  ENTRY(ECHILD, "ECHILD", "No child processes"),
#endif
#if defined (EWOULDBLOCK)	/* Put before EAGAIN, sometimes aliased */
  ENTRY(EWOULDBLOCK, "EWOULDBLOCK", "Operation would block"),
#endif
#if defined (EAGAIN)
  ENTRY(EAGAIN, "EAGAIN", "No more processes"),
#endif
#if defined (ENOMEM)
  ENTRY(ENOMEM, "ENOMEM", "Not enough space"),
#endif
#if defined (EACCES)
  ENTRY(EACCES, "EACCES", "Permission denied"),
#endif
#if defined (EFAULT)
  ENTRY(EFAULT, "EFAULT", "Bad address"),
#endif
#if defined (ENOTBLK)
  ENTRY(ENOTBLK, "ENOTBLK", "Block device required"),
#endif
#if defined (EBUSY)
  ENTRY(EBUSY, "EBUSY", "Device busy"),
#endif
#if defined (EEXIST)
  ENTRY(EEXIST, "EEXIST", "File exists"),
#endif
#if defined (EXDEV)
  ENTRY(EXDEV, "EXDEV", "Cross-device link"),
#endif
#if defined (ENODEV)
  ENTRY(ENODEV, "ENODEV", "No such device"),
#endif
#if defined (ENOTDIR)
  ENTRY(ENOTDIR, "ENOTDIR", "Not a directory"),
#endif
#if defined (EISDIR)
  ENTRY(EISDIR, "EISDIR", "Is a directory"),
#endif
#if defined (EINVAL)
  ENTRY(EINVAL, "EINVAL", "Invalid argument"),
#endif
#if defined (ENFILE)
  ENTRY(ENFILE, "ENFILE", "File table overflow"),
#endif
#if defined (EMFILE)
  ENTRY(EMFILE, "EMFILE", "Too many open files"),
#endif
#if defined (ENOTTY)
  ENTRY(ENOTTY, "ENOTTY", "Not a typewriter"),
#endif
#if defined (ETXTBSY)
  ENTRY(ETXTBSY, "ETXTBSY", "Text file busy"),
#endif
#if defined (EFBIG)
  ENTRY(EFBIG, "EFBIG", "File too large"),
#endif
#if defined (ENOSPC)
  ENTRY(ENOSPC, "ENOSPC", "No space left on device"),
#endif
#if defined (ESPIPE)
  ENTRY(ESPIPE, "ESPIPE", "Illegal seek"),
#endif
#if defined (EROFS)
  ENTRY(EROFS, "EROFS", "Read-only file system"),
#endif
#if defined (EMLINK)
  ENTRY(EMLINK, "EMLINK", "Too many links"),
#endif
#if defined (EPIPE)
  ENTRY(EPIPE, "EPIPE", "Broken pipe"),
#endif
#if defined (EDOM)
  ENTRY(EDOM, "EDOM", "Math argument out of domain of func"),
#endif
#if defined (ERANGE)
  ENTRY(ERANGE, "ERANGE", "Math result not representable"),
#endif
#if defined (ENOMSG)
  ENTRY(ENOMSG, "ENOMSG", "No message of desired type"),
#endif
#if defined (EIDRM)
  ENTRY(EIDRM, "EIDRM", "Identifier removed"),
#endif
#if defined (ECHRNG)
  ENTRY(ECHRNG, "ECHRNG", "Channel number out of range"),
#endif
#if defined (EL2NSYNC)
  ENTRY(EL2NSYNC, "EL2NSYNC", "Level 2 not synchronized"),
#endif
#if defined (EL3HLT)
  ENTRY(EL3HLT, "EL3HLT", "Level 3 halted"),
#endif
#if defined (EL3RST)
  ENTRY(EL3RST, "EL3RST", "Level 3 reset"),
#endif
#if defined (ELNRNG)
  ENTRY(ELNRNG, "ELNRNG", "Link number out of range"),
#endif
#if defined (EUNATCH)
  ENTRY(EUNATCH, "EUNATCH", "Protocol driver not attached"),
#endif
#if defined (ENOCSI)
  ENTRY(ENOCSI, "ENOCSI", "No CSI structure available"),
#endif
#if defined (EL2HLT)
  ENTRY(EL2HLT, "EL2HLT", "Level 2 halted"),
#endif
#if defined (EDEADLK)
  ENTRY(EDEADLK, "EDEADLK", "Deadlock condition"),
#endif
#if defined (ENOLCK)
  ENTRY(ENOLCK, "ENOLCK", "No record locks available"),
#endif
#if defined (EBADE)
  ENTRY(EBADE, "EBADE", "Invalid exchange"),
#endif
#if defined (EBADR)
  ENTRY(EBADR, "EBADR", "Invalid request descriptor"),
#endif
#if defined (EXFULL)
  ENTRY(EXFULL, "EXFULL", "Exchange full"),
#endif
#if defined (ENOANO)
  ENTRY(ENOANO, "ENOANO", "No anode"),
#endif
#if defined (EBADRQC)
  ENTRY(EBADRQC, "EBADRQC", "Invalid request code"),
#endif
#if defined (EBADSLT)
  ENTRY(EBADSLT, "EBADSLT", "Invalid slot"),
#endif
#if defined (EDEADLOCK)
  ENTRY(EDEADLOCK, "EDEADLOCK", "File locking deadlock error"),
#endif
#if defined (EBFONT)
  ENTRY(EBFONT, "EBFONT", "Bad font file format"),
#endif
#if defined (ENOSTR)
  ENTRY(ENOSTR, "ENOSTR", "Device not a stream"),
#endif
#if defined (ENODATA)
  ENTRY(ENODATA, "ENODATA", "No data available"),
#endif
#if defined (ETIME)
  ENTRY(ETIME, "ETIME", "Timer expired"),
#endif
#if defined (ENOSR)
  ENTRY(ENOSR, "ENOSR", "Out of streams resources"),
#endif
#if defined (ENONET)
  ENTRY(ENONET, "ENONET", "Machine is not on the network"),
#endif
#if defined (ENOPKG)
  ENTRY(ENOPKG, "ENOPKG", "Package not installed"),
#endif
#if defined (EREMOTE)
  ENTRY(EREMOTE, "EREMOTE", "Object is remote"),
#endif
#if defined (ENOLINK)
  ENTRY(ENOLINK, "ENOLINK", "Link has been severed"),
#endif
#if defined (EADV)
  ENTRY(EADV, "EADV", "Advertise error"),
#endif
#if defined (ESRMNT)
  ENTRY(ESRMNT, "ESRMNT", "Srmount error"),
#endif
#if defined (ECOMM)
  ENTRY(ECOMM, "ECOMM", "Communication error on send"),
#endif
#if defined (EPROTO)
  ENTRY(EPROTO, "EPROTO", "Protocol error"),
#endif
#if defined (EMULTIHOP)
  ENTRY(EMULTIHOP, "EMULTIHOP", "Multihop attempted"),
#endif
#if defined (EDOTDOT)
  ENTRY(EDOTDOT, "EDOTDOT", "RFS specific error"),
#endif
#if defined (EBADMSG)
  ENTRY(EBADMSG, "EBADMSG", "Not a data message"),
#endif
#if defined (ENAMETOOLONG)
  ENTRY(ENAMETOOLONG, "ENAMETOOLONG", "File name too long"),
#endif
#if defined (EOVERFLOW)
  ENTRY(EOVERFLOW, "EOVERFLOW", "Value too large for defined data type"),
#endif
#if defined (ENOTUNIQ)
  ENTRY(ENOTUNIQ, "ENOTUNIQ", "Name not unique on network"),
#endif
#if defined (EBADFD)
  ENTRY(EBADFD, "EBADFD", "File descriptor in bad state"),
#endif
#if defined (EREMCHG)
  ENTRY(EREMCHG, "EREMCHG", "Remote address changed"),
#endif
#if defined (ELIBACC)
  ENTRY(ELIBACC, "ELIBACC", "Can not access a needed shared library"),
#endif
#if defined (ELIBBAD)
  ENTRY(ELIBBAD, "ELIBBAD", "Accessing a corrupted shared library"),
#endif
#if defined (ELIBSCN)
  ENTRY(ELIBSCN, "ELIBSCN", ".lib section in a.out corrupted"),
#endif
#if defined (ELIBMAX)
  ENTRY(ELIBMAX, "ELIBMAX", "Attempting to link in too many shared libraries"),
#endif
#if defined (ELIBEXEC)
  ENTRY(ELIBEXEC, "ELIBEXEC", "Cannot exec a shared library directly"),
#endif
#if defined (EILSEQ)
  ENTRY(EILSEQ, "EILSEQ", "Illegal byte sequence"),
#endif
#if defined (ENOSYS)
  ENTRY(ENOSYS, "ENOSYS", "Operation not applicable"),
#endif
#if defined (ELOOP)
  ENTRY(ELOOP, "ELOOP", "Too many symbolic links encountered"),
#endif
#if defined (ERESTART)
  ENTRY(ERESTART, "ERESTART", "Interrupted system call should be restarted"),
#endif
#if defined (ESTRPIPE)
  ENTRY(ESTRPIPE, "ESTRPIPE", "Streams pipe error"),
#endif
#if defined (ENOTEMPTY)
  ENTRY(ENOTEMPTY, "ENOTEMPTY", "Directory not empty"),
#endif
#if defined (EUSERS)
  ENTRY(EUSERS, "EUSERS", "Too many users"),
#endif
#if defined (ENOTSOCK)
  ENTRY(ENOTSOCK, "ENOTSOCK", "Socket operation on non-socket"),
#endif
#if defined (EDESTADDRREQ)
  ENTRY(EDESTADDRREQ, "EDESTADDRREQ", "Destination address required"),
#endif
#if defined (EMSGSIZE)
  ENTRY(EMSGSIZE, "EMSGSIZE", "Message too long"),
#endif
#if defined (EPROTOTYPE)
  ENTRY(EPROTOTYPE, "EPROTOTYPE", "Protocol wrong type for socket"),
#endif
#if defined (ENOPROTOOPT)
  ENTRY(ENOPROTOOPT, "ENOPROTOOPT", "Protocol not available"),
#endif
#if defined (EPROTONOSUPPORT)
  ENTRY(EPROTONOSUPPORT, "EPROTONOSUPPORT", "Protocol not supported"),
#endif
#if defined (ESOCKTNOSUPPORT)
  ENTRY(ESOCKTNOSUPPORT, "ESOCKTNOSUPPORT", "Socket type not supported"),
#endif
#if defined (EOPNOTSUPP)
  ENTRY(EOPNOTSUPP, "EOPNOTSUPP", "Operation not supported on transport endpoint"),
#endif
#if defined (EPFNOSUPPORT)
  ENTRY(EPFNOSUPPORT, "EPFNOSUPPORT", "Protocol family not supported"),
#endif
#if defined (EAFNOSUPPORT)
  ENTRY(EAFNOSUPPORT, "EAFNOSUPPORT", "Address family not supported by protocol"),
#endif
#if defined (EADDRINUSE)
  ENTRY(EADDRINUSE, "EADDRINUSE", "Address already in use"),
#endif
#if defined (EADDRNOTAVAIL)
  ENTRY(EADDRNOTAVAIL, "EADDRNOTAVAIL","Cannot assign requested address"),
#endif
#if defined (ENETDOWN)
  ENTRY(ENETDOWN, "ENETDOWN", "Network is down"),
#endif
#if defined (ENETUNREACH)
  ENTRY(ENETUNREACH, "ENETUNREACH", "Network is unreachable"),
#endif
#if defined (ENETRESET)
  ENTRY(ENETRESET, "ENETRESET", "Network dropped connection because of reset"),
#endif
#if defined (ECONNABORTED)
  ENTRY(ECONNABORTED, "ECONNABORTED", "Software caused connection abort"),
#endif
#if defined (ECONNRESET)
  ENTRY(ECONNRESET, "ECONNRESET", "Connection reset by peer"),
#endif
#if defined (ENOBUFS)
  ENTRY(ENOBUFS, "ENOBUFS", "No buffer space available"),
#endif
#if defined (EISCONN)
  ENTRY(EISCONN, "EISCONN", "Transport endpoint is already connected"),
#endif
#if defined (ENOTCONN)
  ENTRY(ENOTCONN, "ENOTCONN", "Transport endpoint is not connected"),
#endif
#if defined (ESHUTDOWN)
  ENTRY(ESHUTDOWN, "ESHUTDOWN", "Cannot send after transport endpoint shutdown"),
#endif
#if defined (ETOOMANYREFS)
  ENTRY(ETOOMANYREFS, "ETOOMANYREFS", "Too many references: cannot splice"),
#endif
#if defined (ETIMEDOUT)
  ENTRY(ETIMEDOUT, "ETIMEDOUT", "Connection timed out"),
#endif
#if defined (ECONNREFUSED)
  ENTRY(ECONNREFUSED, "ECONNREFUSED", "Connection refused"),
#endif
#if defined (EHOSTDOWN)
  ENTRY(EHOSTDOWN, "EHOSTDOWN", "Host is down"),
#endif
#if defined (EHOSTUNREACH)
  ENTRY(EHOSTUNREACH, "EHOSTUNREACH", "No route to host"),
#endif
#if defined (EALREADY)
  ENTRY(EALREADY, "EALREADY", "Operation already in progress"),
#endif
#if defined (EINPROGRESS)
  ENTRY(EINPROGRESS, "EINPROGRESS", "Operation now in progress"),
#endif