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libc/winsup/cygwin/errno.cc

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/* errno.cc: errno-related functions
Copyright 1996, 1997, 1998, 1999, 2000, 2001 Red Hat, Inc.
This file is part of Cygwin.
This software is a copyrighted work licensed under the terms of the
Cygwin license. Please consult the file "CYGWIN_LICENSE" for
details. */
#include "winsup.h"
#define _REENT_ONLY
#include <stdio.h>
#include <errno.h>
#include "cygerrno.h"
#include "thread.h"
/* Table to map Windows error codes to Errno values. */
/* FIXME: Doing things this way is a little slow. It's trivial to change
this into a big case statement if necessary. Left as is for now. */
#define X(w, e) {ERROR_##w, #w, e}
static const NO_COPY struct
{
DWORD w; /* windows version of error */
const char *s; /* text of windows version */
int e; /* errno version of error */
}
errmap[] =
{
/* FIXME: Some of these choices are arbitrary! */
X (INVALID_FUNCTION, EBADRQC),
X (FILE_NOT_FOUND, ENOENT),
X (PATH_NOT_FOUND, ENOENT),
X (TOO_MANY_OPEN_FILES, EMFILE),
X (ACCESS_DENIED, EACCES),
X (INVALID_HANDLE, EBADF),
X (NOT_ENOUGH_MEMORY, ENOMEM),
X (INVALID_DATA, EINVAL),
X (OUTOFMEMORY, ENOMEM),
X (INVALID_DRIVE, ENODEV),
X (NOT_SAME_DEVICE, EXDEV),
X (NO_MORE_FILES, ENMFILE),
X (WRITE_PROTECT, EROFS),
X (BAD_UNIT, ENODEV),
X (SHARING_VIOLATION, EACCES),
X (LOCK_VIOLATION, EACCES),
X (SHARING_BUFFER_EXCEEDED, ENOLCK),
X (HANDLE_EOF, ENODATA),
X (HANDLE_DISK_FULL, ENOSPC),
X (NOT_SUPPORTED, ENOSYS),
X (REM_NOT_LIST, ENONET),
X (DUP_NAME, ENOTUNIQ),
X (BAD_NETPATH, ENOSHARE),
X (BAD_NET_NAME, ENOSHARE),
X (FILE_EXISTS, EEXIST),
X (CANNOT_MAKE, EPERM),
X (INVALID_PARAMETER, EINVAL),
X (NO_PROC_SLOTS, EAGAIN),
X (BROKEN_PIPE, EPIPE),
X (OPEN_FAILED, EIO),
X (NO_MORE_SEARCH_HANDLES, ENFILE),
X (CALL_NOT_IMPLEMENTED, ENOSYS),
X (INVALID_NAME, ENOENT),
X (WAIT_NO_CHILDREN, ECHILD),
X (CHILD_NOT_COMPLETE, EBUSY),
X (DIR_NOT_EMPTY, ENOTEMPTY),
X (SIGNAL_REFUSED, EIO),
X (BAD_PATHNAME, ENOENT),
X (SIGNAL_PENDING, EBUSY),
X (MAX_THRDS_REACHED, EAGAIN),
X (BUSY, EBUSY),
X (ALREADY_EXISTS, EEXIST),
X (NO_SIGNAL_SENT, EIO),
X (FILENAME_EXCED_RANGE, EINVAL),
X (META_EXPANSION_TOO_LONG, EINVAL),
X (INVALID_SIGNAL_NUMBER, EINVAL),
X (THREAD_1_INACTIVE, EINVAL),
X (BAD_PIPE, EINVAL),
X (PIPE_BUSY, EBUSY),
X (NO_DATA, EPIPE),
X (PIPE_NOT_CONNECTED, ECOMM),
X (MORE_DATA, EAGAIN),
X (DIRECTORY, ENOTDIR),
X (PIPE_CONNECTED, EBUSY),
X (PIPE_LISTENING, ECOMM),
X (NO_TOKEN, EINVAL),
X (PROCESS_ABORTED, EFAULT),
X (BAD_DEVICE, ENODEV),
X (BAD_USERNAME, EINVAL),
X (NOT_CONNECTED, ENOLINK),
X (OPEN_FILES, EAGAIN),
X (ACTIVE_CONNECTIONS, EAGAIN),
X (DEVICE_IN_USE, EAGAIN),
X (INVALID_AT_INTERRUPT_TIME, EINTR),
X (IO_DEVICE, EIO),
X (NOT_OWNER, EPERM),
X (END_OF_MEDIA, ENOSPC),
X (EOM_OVERFLOW, ENOSPC),
X (BEGINNING_OF_MEDIA, ESPIPE),
X (SETMARK_DETECTED, ESPIPE),
X (NO_DATA_DETECTED, ENOSPC),
X (POSSIBLE_DEADLOCK, EDEADLOCK),
X (CRC, EIO),
X (NEGATIVE_SEEK, EINVAL),
X (NOT_READY, ENOMEDIUM),
X (DISK_FULL, ENOSPC),
X (NOACCESS, EFAULT),
X (FILE_INVALID, ENXIO),
{ 0, NULL, 0}
};
int __stdcall
geterrno_from_win_error (DWORD code, int deferrno)
{
for (int i = 0; errmap[i].w != 0; ++i)
if (code == errmap[i].w)
{
syscall_printf ("windows error %u == errno %d", code, errmap[i].e);
return errmap[i].e;
}
syscall_printf ("unknown windows error %u, setting errno to %d", code,
deferrno);
return deferrno; /* FIXME: what's so special about EACCESS? */
}
/* seterrno_from_win_error: Given a Windows error code, set errno
as appropriate. */
void __stdcall
seterrno_from_win_error (const char *file, int line, DWORD code)
{
syscall_printf ("%s:%d errno %d", file, line, code);
set_errno (geterrno_from_win_error (code, EACCES));
return;
}
/* seterrno: Set `errno' based on GetLastError (). */
void __stdcall
seterrno (const char *file, int line)
{
seterrno_from_win_error (file, line, GetLastError ());
}
extern char *_user_strerror _PARAMS ((int));
extern const NO_COPY char __declspec(dllexport) * const _sys_errlist[]=
{
/* NOERROR 0 */ "No error",
/* EPERM 1 */ "Not super-user",
/* ENOENT 2 */ "No such file or directory",
/* ESRCH 3 */ "No such process",
/* EINTR 4 */ "Interrupted system call",
/* EIO 5 */ "I/O error",
/* ENXIO 6 */ "No such device or address",
/* E2BIG 7 */ "Arg list too long",
/* ENOEXEC 8 */ "Exec format error",
/* EBADF 9 */ "Bad file number",
/* ECHILD 10 */ "No children",
/* EAGAIN 11 */ "Resource temporarily unavailable",
/* ENOMEM 12 */ "Not enough core",
/* EACCES 13 */ "Permission denied",
/* EFAULT 14 */ "Bad address",
/* ENOTBLK 15 */ "Block device required",
/* EBUSY 16 */ "Mount device busy",
/* EEXIST 17 */ "File exists",
/* EXDEV 18 */ "Cross-device link",
/* ENODEV 19 */ "No such device",
/* ENOTDIR 20 */ "Not a directory",
/* EISDIR 21 */ "Is a directory",
/* EINVAL 22 */ "Invalid argument",
/* ENFILE 23 */ "Too many open files in system",
/* EMFILE 24 */ "Too many open files",
/* ENOTTY 25 */ "Not a typewriter",
/* ETXTBSY 26 */ "Text file busy",
/* EFBIG 27 */ "File too large",
/* ENOSPC 28 */ "No space left on device",
/* ESPIPE 29 */ "Illegal seek",
/* EROFS 30 */ "Read only file system",
/* EMLINK 31 */ "Too many links",
/* EPIPE 32 */ "Broken pipe",
/* EDOM 33 */ "Math arg out of domain of func",
/* ERANGE 34 */ "Math result not representable",
/* ENOMSG 35 */ "No message of desired type",
/* EIDRM 36 */ "Identifier removed",
/* ECHRNG 37 */ "Channel number out of range",
/* EL2NSYNC 38 */ "Level 2 not synchronized",
/* EL3HLT 39 */ "Level 3 halted",
/* EL3RST 40 */ "Level 3 reset",
/* ELNRNG 41 */ "Link number out of range",
/* EUNATCH 42 */ "Protocol driver not attached",
/* ENOCSI 43 */ "No CSI structure available",
/* EL2HLT 44 */ "Level 2 halted",
/* EDEADLK 45 */ "Deadlock condition",
/* ENOLCK 46 */ "No record locks available",
"47",
"48",
"49",
/* EBADE 50 */ "Invalid exchange",
/* EBADR 51 */ "Invalid request descriptor",
/* EXFULL 52 */ "Exchange full",
/* ENOANO 53 */ "No anode",
/* EBADRQC 54 */ "Invalid request code",
/* EBADSLT 55 */ "Invalid slot",
/* EDEADLOCK 56 */ "File locking deadlock error",
/* EBFONT 57 */ "Bad font file fmt",
"58",
"59",
/* ENOSTR 60 */ "Device not a stream",
/* ENODATA 61 */ "No data (for no delay io)",
/* ETIME 62 */ "Timer expired",
/* ENOSR 63 */ "Out of streams resources",
/* ENONET 64 */ "Machine is not on the network",
/* ENOPKG 65 */ "Package not installed",
/* EREMOTE 66 */ "The object is remote",
/* ENOLINK 67 */ "The link has been severed",
/* EADV 68 */ "Advertise error",
/* ESRMNT 69 */ "Srmount error",
/* ECOMM 70 */ "Communication error on send",
/* EPROTO 71 */ "Protocol error",
"72",
"73",
/* EMULTIHOP 74 */ "Multihop attempted",
/* ELBIN 75 */ "Inode is remote (not really error)",
/* EDOTDOT 76 */ "Cross mount point (not really error)",
/* EBADMSG 77 */ "Trying to read unreadable message",
"78",
"79",
/* ENOTUNIQ 80 */ "Given log. name not unique",
/* EBADFD 81 */ "f.d. invalid for this operation",
/* EREMCHG 82 */ "Remote address changed",
/* ELIBACC 83 */ "Can't access a needed shared lib",
/* ELIBBAD 84 */ "Accessing a corrupted shared lib",
/* ELIBSCN 85 */ ".lib section in a.out corrupted",
/* ELIBMAX 86 */ "Attempting to link in too many libs",
/* ELIBEXEC 87 */ "Attempting to exec a shared library",
/* ENOSYS 88 */ "Function not implemented",
/* ENMFILE 89 */ "No more files",
/* ENOTEMPTY 90 */ "Directory not empty",
/* ENAMETOOLONG 91 */ "File or path name too long",
/* ELOOP 92 */ "Too many symbolic links",
"93",
"94",
/* EOPNOTSUPP 95 */ "Operation not supported on transport endpoint",
/* EPFNOSUPPORT 96 */ "Protocol family not supported",
"97",
"98",
"99",
"100",
"101",
"102",
"103",
/* ECONNRESET 104 */ "Connection reset by peer",
/* ENOBUFS 105 */ "No buffer space available",
/* EAFNOSUPPORT 106 */ "Address family not supported by protocol",
/* EPROTOTYPE 107 */ "Protocol wrong type for transport endpoint",
/* ENOTSOCK 108 */ "Socket operation on non-socket",
/* ENOPROTOOPT 109 */ "Protocol not available",
/* ESHUTDOWN 110 */ "Cannot send after transport endpoint shutdown",
/* ECONNREFUSED 111 */ "Connection refused",
/* EADDRINUSE 112 */ "Address already in use",
/* ECONNABORTED 113 */ "Connection aborted",
/* ENETUNREACH 114 */ "Network is unreachable",
/* ENETDOWN 115 */ "Network is down",
/* ETIMEDOUT 116 */ "Connection timed out",
/* EHOSTDOWN 117 */ "Host is down",
/* EHOSTUNREACH 118 */ "No route to host",
/* EINPROGRESS 119 */ "Operation now in progress",
/* EALREADY 120 */ "Operation already in progress",
/* EDESTADDRREQ 121 */ "Destination address required",
/* EMSGSIZE 122 */ "Message too long",
/* EPROTONOSUPPORT 123 */ "Protocol not supported",
/* ESOCKTNOSUPPORT 124 */ "Socket type not supported",
/* EADDRNOTAVAIL 125 */ "Cannot assign requested address",
/* ENETRESET 126 */ "Network dropped connection because of reset",
/* EISCONN 127 */ "Transport endpoint is already connected",
/* ENOTCONN 128 */ "Transport endpoint is not connected",
/* ETOOMANYREFS 129 */ "Too many references: cannot splice",
/* EPROCLIM 130 */ "Process limit exceeded",
/* EUSERS 131 */ "Too many users",
/* EDQUOT 132 */ "Quota exceeded",
/* ESTALE 133 */ "Stale NFS file handle",
/* ENOTSUP 134 */ "134",
/* ENOMEDIUM 135 */ "no medium",
/* ENOSHARE 136 */ "No such host or network path",
/* ECASECLASH 137 */ "Filename exists with different case"
};
int NO_COPY __declspec(dllexport) _sys_nerr =
sizeof (_sys_errlist) / sizeof (_sys_errlist[0]);
/* FIXME: Why is strerror() a long switch and not just:
return sys_errlist[errnum];
(or moral equivalent).
Some entries in sys_errlist[] don't match the corresponding
entries in strerror(). This seems odd.
*/
/* CYGWIN internal */
/* strerror: convert from errno values to error strings */
extern "C" char *
strerror (int errnum)
{
const char *error;
switch (errnum)
{
case EPERM:
error = "Not owner";
break;
case ENOENT:
error = "No such file or directory";
break;
case ESRCH:
error = "No such process";
break;
case EINTR:
error = "Interrupted system call";
break;
case EIO:
error = "I/O error";
break;
case ENXIO:
error = "No such device or address";
break;
case E2BIG:
error = "Arg list too long";
break;
case ENOEXEC:
error = "Exec format error";
break;
case EBADF:
error = "Bad file number";
break;
case ECHILD:
error = "No children";
break;
case EAGAIN:
error = "Resource temporarily unavailable";
break;
case ENOMEM:
error = "Not enough memory";
break;
case EACCES:
error = "Permission denied";
break;
case EFAULT:
error = "Bad address";
break;
case ENOTBLK:
error = "Block device required";
break;
case EBUSY:
error = "Device or resource busy";
break;
case EEXIST:
error = "File exists";
break;
case EXDEV:
error = "Cross-device link";
break;
case ENODEV:
error = "No such device";
break;
case ENOTDIR:
error = "Not a directory";
break;
case EISDIR:
error = "Is a directory";
break;
case EINVAL:
error = "Invalid argument";
break;
case ENFILE:
error = "Too many open files in system";
break;
case EMFILE:
error = "Too many open files";
break;
case ENOTTY:
error = "Not a character device";
break;
case ETXTBSY:
error = "Text file busy";
break;
case EFBIG:
error = "File too large";
break;
case ENOSPC:
error = "No space left on device";
break;
case ESPIPE:
error = "Illegal seek";
break;
case EROFS:
error = "Read-only file system";
break;
case EMLINK:
error = "Too many links";
break;
case EPIPE:
error = "Broken pipe";
break;
case EDOM:
error = "Math arg out of domain of func";
break;
case ERANGE:
error = "Math result out of range";
break;
case ENOMSG:
error = "No message of desired type";
break;
case EIDRM:
error = "Identifier removed";
break;
case ECHRNG:
error = "Channel number out of range";
break;
case EL2NSYNC:
error = "Level 2 not synchronized";
break;
case EL3HLT:
error = "Level 3 halted";
break;
case EL3RST:
error = "Level 3 reset";
break;
case ELNRNG:
error = "Link number out of range";
break;
case EUNATCH:
error = "Protocol driver not attached";
break;
case ENOCSI:
error = "No CSI structure available";
break;
case EL2HLT:
error = "Level 2 halted";
break;
case EDEADLK:
error = "Deadlock condition";
break;
case ENOLCK:
error = "No lock";
break;
case EBADE:
error = "Invalid exchange";
break;
case EBADR:
error = "Invalid request descriptor";
break;
case EXFULL:
error = "Exchange full";
break;
case ENOANO:
error = "No anode";
break;
case EBADRQC:
error = "Invalid request code";
break;
case EBADSLT:
error = "Invalid slot";
break;
case EDEADLOCK:
error = "File locking deadlock error";
break;
case EBFONT:
error = "Bad font file fmt";
break;
case ENOSTR:
error = "Not a stream";
break;
case ENODATA:
error = "No data (for no delay io)";
break;
case ETIME:
error = "Stream ioctl timeout";
break;
case ENOSR:
error = "No stream resources";
break;
case ENONET:
error = "Machine is not on the network";
break;
case ENOPKG:
error = "No package";
break;
case EREMOTE:
error = "Resource is remote";
break;
case ENOLINK:
error = "Virtual circuit is gone";
break;
case EADV:
error = "Advertise error";
break;
case ESRMNT:
error = "Srmount error";
break;
case ECOMM:
error = "Communication error";
break;
case EPROTO:
error = "Protocol error";
break;
case EMULTIHOP:
error = "Multihop attempted";
break;
case ELBIN:
error = "Inode is remote (not really error)";
break;
case EDOTDOT:
error = "Cross mount point (not really error)";
break;
case EBADMSG:
error = "Bad message";
break;
case ENOTUNIQ:
error = "Given log. name not unique";
break;
case EBADFD:
error = "f.d. invalid for this operation";
break;
case EREMCHG:
error = "Remote address changed";
break;
case ELIBACC:
error = "Cannot access a needed shared library";
break;
case ELIBBAD:
error = "Accessing a corrupted shared library";
break;
case ELIBSCN:
error = ".lib section in a.out corrupted";
break;
case ELIBMAX:
error = "Attempting to link in more shared libraries than system limit";
break;
case ELIBEXEC:
error = "Cannot exec a shared library directly";
break;
case ENOSYS:
error = "Function not implemented";
break;
case ENMFILE:
error = "No more files";
break;
case ENOTEMPTY:
error = "Directory not empty";
break;
case ENAMETOOLONG:
error = "File or path name too long";
break;
case ELOOP:
error = "Too many symbolic links";
break;
case EOPNOTSUPP:
error = "Operation not supported on transport endpoint";
break;
case EPFNOSUPPORT:
error = "Protocol family not supported";
break;
case ECONNRESET:
error = "Connection reset by peer";
break;
case ENOBUFS:
error = "No buffer space available; the socket cannot be connected";
break;
case EAFNOSUPPORT:
error = "Addresses in the specified family cannot be used with this socket";
break;
case EPROTOTYPE:
error = "errno EPROTOTYPE triggered";
break;
case ENOTSOCK:
error = "The descriptor is a file, not a socket";
break;
case ENOPROTOOPT:
error = "This option is unsupported";
break;
case ESHUTDOWN:
error = "errno ESHUTDOWN triggered";
break;
case ECONNREFUSED:
error = "Connection refused";
break;
case EADDRINUSE:
error = "Address already in use";
break;
case ECONNABORTED:
error = "The connection was aborted";
break;
case ENETUNREACH:
error ="The network can't be reached from this host at this time";
break;
case ENETDOWN:
error = "Network failed.";
break;
case ETIMEDOUT:
error = "Attempt to connect timed out without establishing a connection";
break;
case EHOSTDOWN:
error = "errno EHOSTDOWN triggered";
break;
case EHOSTUNREACH:
error = "errno EHOSTUNREACH triggered";
break;
case EINPROGRESS:
error = "errno EINPROGRESS triggered";
break;
case EALREADY:
error = "errno EALREADY triggered";
break;
case EDESTADDRREQ:
error = "errno EDESTADDRREQ triggered";
break;
case EMSGSIZE:
error = "errno EMSGSIZE triggered";
break;
case EPROTONOSUPPORT:
error = "errno EPROTONOSUPPORT triggered";
break;
case ESOCKTNOSUPPORT:
error = "errno ESOCKTNOSUPPORT triggered";
break;
case EADDRNOTAVAIL:
error = "errno EADDRNOTAVAIL triggered";
break;
case ENETRESET:
error = "errno ENETRESET triggered";
break;
case EISCONN:
error = "The socket is already connected";
break;
case ENOTCONN:
error = "The socket is not connected";
break;
case ETOOMANYREFS:
error = "errno ETOOMANYREFS triggered";
break;
case EPROCLIM:
error = "errno EPROCLIM triggered";
break;
case EUSERS:
error = "errno EUSERS triggered";
break;
case EDQUOT:
error = "errno EDQUOT triggered";
break;
case ESTALE:
error = "errno ESTALE triggered";
break;
case ENOTSUP:
error = "errno ENOTSUP triggered";
break;
case ENOMEDIUM:
error = "no medium";
break;
case ENOSHARE:
error = "No such host or network path";
break;
case ECASECLASH:
error = "Filename exists with different case";
break;
default:
#ifdef _MT_SAFE
char *buf= _reent_winsup()->_strerror_buf;
#else
static NO_COPY char buf[20];
#endif
__small_sprintf (buf, "error %d", errnum);
error = buf;
break;
}
/* FIXME: strerror should really be const in the appropriate newlib
include files. */
return (char *) error;
}
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