+++ /dev/null
-/* Extended support for using errno values.
- Written by Fred Fish. fnf@cygnus.com
- This file is in the public domain. --Per Bothner. */
-
-/* Slightly edited for Fiasco by Markus Armbruster */
-
-/* Fiasco's requirements: */
-#undef NEED_sys_errlist
-#define NEED_strerror
-
-
-#ifndef NEED_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>
-
-#ifndef NEED_sys_errlist
-#undef sys_errlist
-#endif
-
-/* Routines imported from standard C runtime libraries. */
-
-#ifdef __STDC__
-#include <stddef.h>
-extern void *malloc (size_t size); /* 4.10.3.3 */
-extern void *memset (void *s, int c, size_t n); /* 4.11.6.1 */
-#else /* !__STDC__ */
-extern char *malloc (); /* Standard memory allocater */
-extern char *memset ();
-#endif /* __STDC__ */
-
-#ifndef MAX
-# define MAX(a,b) ((a) > (b) ? (a) : (b))
-#endif
-
-/* 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 */
-#ifdef NEED_sys_errlist
- const char *msg; /* Short message about this value */
-#endif
-};
-
-#ifdef NEED_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
-#if defined (ESTALE)
- ENTRY(ESTALE, "ESTALE", "Stale NFS file handle"),
-#endif
-#if defined (EUCLEAN)
- ENTRY(EUCLEAN, "EUCLEAN", "Structure needs cleaning"),
-#endif
-#if defined (ENOTNAM)
- ENTRY(ENOTNAM, "ENOTNAM", "Not a XENIX named type file"),
-#endif
-#if defined (ENAVAIL)
- ENTRY(ENAVAIL, "ENAVAIL", "No XENIX semaphores available"),
-#endif
-#if defined (EISNAM)
- ENTRY(EISNAM, "EISNAM", "Is a named type file"),
-#endif
-#if defined (EREMOTEIO)
- ENTRY(EREMOTEIO, "EREMOTEIO", "Remote I/O error"),
-#endif
- ENTRY(0, NULL, NULL)
-};
-
-#ifdef EVMSERR
-/* This is not in the table, because the numeric value of EVMSERR (32767)
- lies outside the range of sys_errlist[]. */
-static struct { int value; const char *name, *msg; }
- evmserr = { EVMSERR, "EVMSERR", "VMS-specific error" };
-#endif
-
-/* Translation table allocated and initialized at runtime. Indexed by the
- errno value to find the equivalent symbolic value. */
-
-static const char **error_names;
-static int num_error_names = 0;
-
-/* Translation table allocated and initialized at runtime, if it does not
- already exist in the host environment. Indexed by the errno value to find
- the descriptive string.
-
- We don't export it for use in other modules because even though it has the
- same name, it differs from other implementations in that it is dynamically
- initialized rather than statically initialized. */
-
-#ifdef NEED_sys_errlist
-
-static int sys_nerr;
-static const char **sys_errlist;
-
-#else
-
-extern int sys_nerr;
-extern char *sys_errlist[];
-
-#endif
-
-
-/*
-
-NAME
-
- init_error_tables -- initialize the name and message tables
-
-SYNOPSIS
-
- static void init_error_tables ();
-
-DESCRIPTION
-
- Using the error_table, which is initialized at compile time, generate
- the error_names and the sys_errlist (if needed) tables, which are
- indexed at runtime by a specific errno value.
-
-BUGS
-
- The initialization of the tables may fail under low memory conditions,
- in which case we don't do anything particularly useful, but we don't
- bomb either. Who knows, it might succeed at a later point if we free
- some memory in the meantime. In any case, the other routines know
- how to deal with lack of a table after trying to initialize it. This
- may or may not be considered to be a bug, that we don't specifically
- warn about this particular failure mode.
-
-*/
-
-static void
-init_error_tables ()
-{
- const struct error_info *eip;
- int nbytes;
-
- /* If we haven't already scanned the error_table once to find the maximum
- errno value, then go find it now. */
-
- if (num_error_names == 0)
- {
- for (eip = error_table; eip -> name != NULL; eip++)
- {
- if (eip -> value >= num_error_names)
- {
- num_error_names = eip -> value + 1;
- }
- }
- }
-
- /* Now attempt to allocate the error_names table, zero it out, and then
- initialize it from the statically initialized error_table. */
-
- if (error_names == NULL)
- {
- nbytes = num_error_names * sizeof (char *);
- if ((error_names = (const char **) malloc (nbytes)) != NULL)
- {
- memset (error_names, 0, nbytes);
- for (eip = error_table; eip -> name != NULL; eip++)
- {
- error_names[eip -> value] = eip -> name;
- }
- }
- }
-
-#ifdef NEED_sys_errlist
-
- /* Now attempt to allocate the sys_errlist table, zero it out, and then
- initialize it from the statically initialized error_table. */
-
- if (sys_errlist == NULL)
- {
- nbytes = num_error_names * sizeof (char *);
- if ((sys_errlist = (const char **) malloc (nbytes)) != NULL)
- {
- memset (sys_errlist, 0, nbytes);
- sys_nerr = num_error_names;
- for (eip = error_table; eip -> name != NULL; eip++)
- {
- sys_errlist[eip -> value] = eip -> msg;
- }
- }
- }
-
-#endif
-
-}
-
-/*
-
-NAME
-
- errno_max -- return the max errno value
-
-SYNOPSIS
-
- int errno_max ();
-
-DESCRIPTION
-
- Returns the maximum errno value for which a corresponding symbolic
- name or message is available. Note that in the case where
- we use the sys_errlist supplied by the system, it is possible for
- there to be more symbolic names than messages, or vice versa.
- In fact, the manual page for perror(3C) explicitly warns that one
- should check the size of the table (sys_nerr) before indexing it,
- since new error codes may be added to the system before they are
- added to the table. Thus sys_nerr might be smaller than value
- implied by the largest errno value defined in <errno.h>.
-
- We return the maximum value that can be used to obtain a meaningful
- symbolic name or message.
-
-*/
-
-int
-errno_max ()
-{
- int maxsize;
-
- if (error_names == NULL)
- {
- init_error_tables ();
- }
- maxsize = MAX (sys_nerr, num_error_names);
- return (maxsize - 1);
-}
-
-#ifdef NEED_strerror
-
-/*
-
-NAME
-
- strerror -- map an error number to an error message string
-
-SYNOPSIS
-
- char *strerror (int errnoval)
-
-DESCRIPTION
-
- Maps an errno number to an error message string, the contents of
- which are implementation defined. On systems which have the external
- variables sys_nerr and sys_errlist, these strings will be the same
- as the ones used by perror().
-
- If the supplied error number is within the valid range of indices
- for the sys_errlist, but no message is available for the particular
- error number, then returns the string "Error NUM", where NUM is the
- error number.
-
- If the supplied error number is not a valid index into sys_errlist,
- returns NULL.
-
- The returned string is only guaranteed to be valid only until the
- next call to strerror.
-
-*/
-
-char *
-strerror (errnoval)
- int errnoval;
-{
- char *msg;
- static char buf[32];
-
-#ifdef NEED_sys_errlist
-
- if (error_names == NULL)
- {
- init_error_tables ();
- }
-
-#endif
-
- if ((errnoval < 0) || (errnoval >= sys_nerr))
- {
-#ifdef EVMSERR
- if (errnoval == evmserr.value)
- msg = evmserr.msg;
- else
-#endif
- /* Out of range, just return NULL */
- msg = NULL;
- }
- else if ((sys_errlist == NULL) || (sys_errlist[errnoval] == NULL))
- {
- /* In range, but no sys_errlist or no entry at this index. */
- sprintf (buf, "Error %d", errnoval);
- msg = buf;
- }
- else
- {
- /* In range, and a valid message. Just return the message. */
- msg = (char *) sys_errlist[errnoval];
- }
-
- return (msg);
-}
-
-#endif /* NEED_strerror */
-
-
-/*
-
-NAME
-
- strerrno -- map an error number to a symbolic name string
-
-SYNOPSIS
-
- const char *strerrno (int errnoval)
-
-DESCRIPTION
-
- Given an error number returned from a system call (typically
- returned in errno), returns a pointer to a string containing the
- symbolic name of that error number, as found in <errno.h>.
-
- If the supplied error number is within the valid range of indices
- for symbolic names, but no name is available for the particular
- error number, then returns the string "Error NUM", where NUM is
- the error number.
-
- If the supplied error number is not within the range of valid
- indices, then returns NULL.
-
-BUGS
-
- The contents of the location pointed to are only guaranteed to be
- valid until the next call to strerrno.
-
-*/
-
-const char *
-strerrno (errnoval)
- int errnoval;
-{
- const char *name;
- static char buf[32];
-
- if (error_names == NULL)
- {
- init_error_tables ();
- }
-
- if ((errnoval < 0) || (errnoval >= num_error_names))
- {
-#ifdef EVMSERR
- if (errnoval == evmserr.value)
- name = evmserr.name;
- else
-#endif
- /* Out of range, just return NULL */
- name = NULL;
- }
- else if ((error_names == NULL) || (error_names[errnoval] == NULL))
- {
- /* In range, but no error_names or no entry at this index. */
- sprintf (buf, "Error %d", errnoval);
- name = (const char *) buf;
- }
- else
- {
- /* In range, and a valid name. Just return the name. */
- name = error_names[errnoval];
- }
-
- return (name);
-}
-
-/*
-
-NAME
-
- strtoerrno -- map a symbolic errno name to a numeric value
-
-SYNOPSIS
-
- int strtoerrno (char *name)
-
-DESCRIPTION
-
- Given the symbolic name of a error number, map it to an errno value.
- If no translation is found, returns 0.
-
-*/
-
-int
-strtoerrno (name)
- const char *name;
-{
- int errnoval = 0;
-
- if (name != NULL)
- {
- if (error_names == NULL)
- {
- init_error_tables ();
- }
- for (errnoval = 0; errnoval < num_error_names; errnoval++)
- {
- if ((error_names[errnoval] != NULL) &&
- (strcmp (name, error_names[errnoval]) == 0))
- {
- break;
- }
- }
- if (errnoval == num_error_names)
- {
-#ifdef EVMSERR
- if (strcmp (name, evmserr.name) == 0)
- errnoval = evmserr.value;
- else
-#endif
- errnoval = 0;
- }
- }
- return (errnoval);
-}
-
-
-/* A simple little main that does nothing but print all the errno translations
- if MAIN is defined and this file is compiled and linked. */
-
-#ifdef MAIN
-
-#include <stdio.h>
-
-int
-main ()
-{
- int errn;
- int errnmax;
- const char *name;
- char *msg;
- char *strerror ();
-
- errnmax = errno_max ();
- printf ("%d entries in names table.\n", num_error_names);
- printf ("%d entries in messages table.\n", sys_nerr);
- printf ("%d is max useful index.\n", errnmax);
-
- /* Keep printing values until we get to the end of *both* tables, not
- *either* table. Note that knowing the maximum useful index does *not*
- relieve us of the responsibility of testing the return pointer for
- NULL. */
-
- for (errn = 0; errn <= errnmax; errn++)
- {
- name = strerrno (errn);
- name = (name == NULL) ? "<NULL>" : name;
- msg = strerror (errn);
- msg = (msg == NULL) ? "<NULL>" : msg;
- printf ("%-4d%-18s%s\n", errn, name, msg);
- }
-
- return 0;
-}
-
-#endif
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