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-rw-r--r--tests/strerror.c353
1 files changed, 38 insertions, 315 deletions
diff --git a/tests/strerror.c b/tests/strerror.c
index b0df778..adba738 100644
--- a/tests/strerror.c
+++ b/tests/strerror.c
@@ -1,6 +1,6 @@
/* strerror.c --- POSIX compatible system error routine
- Copyright (C) 2007-2010 Free Software Foundation, Inc.
+ Copyright (C) 2007-2015 Free Software Foundation, Inc.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
@@ -17,331 +17,54 @@
#include <config.h>
+/* Specification. */
#include <string.h>
-#if REPLACE_STRERROR
-
-# include <errno.h>
-# include <stdio.h>
-
-# if GNULIB_defined_ESOCK /* native Windows platforms */
-# if HAVE_WINSOCK2_H
-# include <winsock2.h>
-# endif
-# endif
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
-# include "intprops.h"
+#include "intprops.h"
+#include "strerror-override.h"
+#include "verify.h"
-# undef strerror
-# if ! HAVE_DECL_STRERROR
-# define strerror(n) NULL
-# endif
+/* Use the system functions, not the gnulib overrides in this file. */
+#undef sprintf
char *
-rpl_strerror (int n)
+strerror (int n)
+#undef strerror
{
- char const *msg = NULL;
- /* These error messages are taken from glibc/sysdeps/gnu/errlist.c. */
- switch (n)
- {
-# if GNULIB_defined_ETXTBSY
- case ETXTBSY:
- msg = "Text file busy";
- break;
-# endif
-
-# if GNULIB_defined_ESOCK /* native Windows platforms */
- /* EWOULDBLOCK is the same as EAGAIN. */
- case EINPROGRESS:
- msg = "Operation now in progress";
- break;
- case EALREADY:
- msg = "Operation already in progress";
- break;
- case ENOTSOCK:
- msg = "Socket operation on non-socket";
- break;
- case EDESTADDRREQ:
- msg = "Destination address required";
- break;
- case EMSGSIZE:
- msg = "Message too long";
- break;
- case EPROTOTYPE:
- msg = "Protocol wrong type for socket";
- break;
- case ENOPROTOOPT:
- msg = "Protocol not available";
- break;
- case EPROTONOSUPPORT:
- msg = "Protocol not supported";
- break;
- case ESOCKTNOSUPPORT:
- msg = "Socket type not supported";
- break;
- case EOPNOTSUPP:
- msg = "Operation not supported";
- break;
- case EPFNOSUPPORT:
- msg = "Protocol family not supported";
- break;
- case EAFNOSUPPORT:
- msg = "Address family not supported by protocol";
- break;
- case EADDRINUSE:
- msg = "Address already in use";
- break;
- case EADDRNOTAVAIL:
- msg = "Cannot assign requested address";
- break;
- case ENETDOWN:
- msg = "Network is down";
- break;
- case ENETUNREACH:
- msg = "Network is unreachable";
- break;
- case ENETRESET:
- msg = "Network dropped connection on reset";
- break;
- case ECONNABORTED:
- msg = "Software caused connection abort";
- break;
- case ECONNRESET:
- msg = "Connection reset by peer";
- break;
- case ENOBUFS:
- msg = "No buffer space available";
- break;
- case EISCONN:
- msg = "Transport endpoint is already connected";
- break;
- case ENOTCONN:
- msg = "Transport endpoint is not connected";
- break;
- case ESHUTDOWN:
- msg = "Cannot send after transport endpoint shutdown";
- break;
- case ETOOMANYREFS:
- msg = "Too many references: cannot splice";
- break;
- case ETIMEDOUT:
- msg = "Connection timed out";
- break;
- case ECONNREFUSED:
- msg = "Connection refused";
- break;
- case ELOOP:
- msg = "Too many levels of symbolic links";
- break;
- case EHOSTDOWN:
- msg = "Host is down";
- break;
- case EHOSTUNREACH:
- msg = "No route to host";
- break;
- case EPROCLIM:
- msg = "Too many processes";
- break;
- case EUSERS:
- msg = "Too many users";
- break;
- case EDQUOT:
- msg = "Disk quota exceeded";
- break;
- case ESTALE:
- msg = "Stale NFS file handle";
- break;
- case EREMOTE:
- msg = "Object is remote";
- break;
-# if HAVE_WINSOCK2_H
- /* WSA_INVALID_HANDLE maps to EBADF */
- /* WSA_NOT_ENOUGH_MEMORY maps to ENOMEM */
- /* WSA_INVALID_PARAMETER maps to EINVAL */
- case WSA_OPERATION_ABORTED:
- msg = "Overlapped operation aborted";
- break;
- case WSA_IO_INCOMPLETE:
- msg = "Overlapped I/O event object not in signaled state";
- break;
- case WSA_IO_PENDING:
- msg = "Overlapped operations will complete later";
- break;
- /* WSAEINTR maps to EINTR */
- /* WSAEBADF maps to EBADF */
- /* WSAEACCES maps to EACCES */
- /* WSAEFAULT maps to EFAULT */
- /* WSAEINVAL maps to EINVAL */
- /* WSAEMFILE maps to EMFILE */
- /* WSAEWOULDBLOCK maps to EWOULDBLOCK */
- /* WSAEINPROGRESS is EINPROGRESS */
- /* WSAEALREADY is EALREADY */
- /* WSAENOTSOCK is ENOTSOCK */
- /* WSAEDESTADDRREQ is EDESTADDRREQ */
- /* WSAEMSGSIZE is EMSGSIZE */
- /* WSAEPROTOTYPE is EPROTOTYPE */
- /* WSAENOPROTOOPT is ENOPROTOOPT */
- /* WSAEPROTONOSUPPORT is EPROTONOSUPPORT */
- /* WSAESOCKTNOSUPPORT is ESOCKTNOSUPPORT */
- /* WSAEOPNOTSUPP is EOPNOTSUPP */
- /* WSAEPFNOSUPPORT is EPFNOSUPPORT */
- /* WSAEAFNOSUPPORT is EAFNOSUPPORT */
- /* WSAEADDRINUSE is EADDRINUSE */
- /* WSAEADDRNOTAVAIL is EADDRNOTAVAIL */
- /* WSAENETDOWN is ENETDOWN */
- /* WSAENETUNREACH is ENETUNREACH */
- /* WSAENETRESET is ENETRESET */
- /* WSAECONNABORTED is ECONNABORTED */
- /* WSAECONNRESET is ECONNRESET */
- /* WSAENOBUFS is ENOBUFS */
- /* WSAEISCONN is EISCONN */
- /* WSAENOTCONN is ENOTCONN */
- /* WSAESHUTDOWN is ESHUTDOWN */
- /* WSAETOOMANYREFS is ETOOMANYREFS */
- /* WSAETIMEDOUT is ETIMEDOUT */
- /* WSAECONNREFUSED is ECONNREFUSED */
- /* WSAELOOP is ELOOP */
- /* WSAENAMETOOLONG maps to ENAMETOOLONG */
- /* WSAEHOSTDOWN is EHOSTDOWN */
- /* WSAEHOSTUNREACH is EHOSTUNREACH */
- /* WSAENOTEMPTY maps to ENOTEMPTY */
- /* WSAEPROCLIM is EPROCLIM */
- /* WSAEUSERS is EUSERS */
- /* WSAEDQUOT is EDQUOT */
- /* WSAESTALE is ESTALE */
- /* WSAEREMOTE is EREMOTE */
- case WSASYSNOTREADY:
- msg = "Network subsystem is unavailable";
- break;
- case WSAVERNOTSUPPORTED:
- msg = "Winsock.dll version out of range";
- break;
- case WSANOTINITIALISED:
- msg = "Successful WSAStartup not yet performed";
- break;
- case WSAEDISCON:
- msg = "Graceful shutdown in progress";
- break;
- case WSAENOMORE: case WSA_E_NO_MORE:
- msg = "No more results";
- break;
- case WSAECANCELLED: case WSA_E_CANCELLED:
- msg = "Call was canceled";
- break;
- case WSAEINVALIDPROCTABLE:
- msg = "Procedure call table is invalid";
- break;
- case WSAEINVALIDPROVIDER:
- msg = "Service provider is invalid";
- break;
- case WSAEPROVIDERFAILEDINIT:
- msg = "Service provider failed to initialize";
- break;
- case WSASYSCALLFAILURE:
- msg = "System call failure";
- break;
- case WSASERVICE_NOT_FOUND:
- msg = "Service not found";
- break;
- case WSATYPE_NOT_FOUND:
- msg = "Class type not found";
- break;
- case WSAEREFUSED:
- msg = "Database query was refused";
- break;
- case WSAHOST_NOT_FOUND:
- msg = "Host not found";
- break;
- case WSATRY_AGAIN:
- msg = "Nonauthoritative host not found";
- break;
- case WSANO_RECOVERY:
- msg = "Nonrecoverable error";
- break;
- case WSANO_DATA:
- msg = "Valid name, no data record of requested type";
- break;
- /* WSA_QOS_* omitted */
-# endif
-# endif
-
-# if GNULIB_defined_ENOMSG
- case ENOMSG:
- msg = "No message of desired type";
- break;
-# endif
-
-# if GNULIB_defined_EIDRM
- case EIDRM:
- msg = "Identifier removed";
- break;
-# endif
-
-# if GNULIB_defined_ENOLINK
- case ENOLINK:
- msg = "Link has been severed";
- break;
-# endif
-
-# if GNULIB_defined_EPROTO
- case EPROTO:
- msg = "Protocol error";
- break;
-# endif
-
-# if GNULIB_defined_EMULTIHOP
- case EMULTIHOP:
- msg = "Multihop attempted";
- break;
-# endif
-
-# if GNULIB_defined_EBADMSG
- case EBADMSG:
- msg = "Bad message";
- break;
-# endif
-
-# if GNULIB_defined_EOVERFLOW
- case EOVERFLOW:
- msg = "Value too large for defined data type";
- break;
-# endif
-
-# if GNULIB_defined_ENOTSUP
- case ENOTSUP:
- msg = "Not supported";
- break;
-# endif
-
-# if GNULIB_defined_ESTALE
- case ESTALE:
- msg = "Stale NFS file handle";
- break;
-# endif
-
-# if GNULIB_defined_ECANCELED
- case ECANCELED:
- msg = "Operation canceled";
- break;
-# endif
- }
+ static char buf[STACKBUF_LEN];
+ size_t len;
+ /* Cast away const, due to the historical signature of strerror;
+ callers should not be modifying the string. */
+ const char *msg = strerror_override (n);
if (msg)
return (char *) msg;
- {
- char *result = strerror (n);
+ msg = strerror (n);
- if (result == NULL || result[0] == '\0')
- {
- static char const fmt[] = "Unknown error (%d)";
- static char msg_buf[sizeof fmt + INT_STRLEN_BOUND (n)];
- sprintf (msg_buf, fmt, n);
- return msg_buf;
- }
+ /* Our strerror_r implementation might use the system's strerror
+ buffer, so all other clients of strerror have to see the error
+ copied into a buffer that we manage. This is not thread-safe,
+ even if the system strerror is, but portable programs shouldn't
+ be using strerror if they care about thread-safety. */
+ if (!msg || !*msg)
+ {
+ static char const fmt[] = "Unknown error %d";
+ verify (sizeof buf >= sizeof (fmt) + INT_STRLEN_BOUND (n));
+ sprintf (buf, fmt, n);
+ errno = EINVAL;
+ return buf;
+ }
- return result;
- }
-}
+ /* Fix STACKBUF_LEN if this ever aborts. */
+ len = strlen (msg);
+ if (sizeof buf <= len)
+ abort ();
-#endif
+ return memcpy (buf, msg, len + 1);
+}
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