379 lines
12 KiB
C++
379 lines
12 KiB
C++
/* errno.cc: errno-related functions
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Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
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2006, 2008, 2009, 2010 Red Hat, Inc.
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This file is part of Cygwin.
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This software is a copyrighted work licensed under the terms of the
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Cygwin license. Please consult the file "CYGWIN_LICENSE" for
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details. */
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#define _sys_nerr FOO_sys_nerr
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#define sys_nerr FOOsys_nerr
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#define _sys_errlist FOO_sys_errlist
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#include "winsup.h"
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#include "cygtls.h"
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#include "ntdll.h"
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#undef _sys_nerr
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#undef sys_nerr
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#undef _sys_errlist
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/* Table to map Windows error codes to Errno values. */
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/* FIXME: Doing things this way is a little slow. It's trivial to change
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this into a big case statement if necessary. Left as is for now. */
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#define X(w, e) {ERROR_##w, #w, e}
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static NO_COPY struct
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{
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DWORD w; /* windows version of error */
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const char *s; /* text of windows version */
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int e; /* errno version of error */
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} errmap[] =
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{
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/* FIXME: Some of these choices are arbitrary! */
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X (ACCESS_DENIED, EACCES),
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X (ACTIVE_CONNECTIONS, EAGAIN),
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X (ALREADY_EXISTS, EEXIST),
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X (BAD_DEVICE, ENODEV),
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X (BAD_NETPATH, ENOENT),
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X (BAD_NET_NAME, ENOENT),
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X (BAD_PATHNAME, ENOENT),
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X (BAD_PIPE, EINVAL),
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X (BAD_UNIT, ENODEV),
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X (BAD_USERNAME, EINVAL),
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X (BEGINNING_OF_MEDIA, EIO),
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X (BROKEN_PIPE, EPIPE),
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X (BUSY, EBUSY),
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X (BUS_RESET, EIO),
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X (CALL_NOT_IMPLEMENTED, ENOSYS),
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X (CANNOT_MAKE, EPERM),
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X (CHILD_NOT_COMPLETE, EBUSY),
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X (COMMITMENT_LIMIT, EAGAIN),
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X (CRC, EIO),
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X (DEVICE_DOOR_OPEN, EIO),
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X (DEVICE_IN_USE, EAGAIN),
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X (DEVICE_REQUIRES_CLEANING, EIO),
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X (DIRECTORY, ENOTDIR),
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X (DIR_NOT_EMPTY, ENOTEMPTY),
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X (DISK_CORRUPT, EIO),
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X (DISK_FULL, ENOSPC),
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X (DUP_NAME, ENOTUNIQ),
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X (EAS_DIDNT_FIT, ENOSPC),
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X (EAS_NOT_SUPPORTED, ENOTSUP),
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X (EA_LIST_INCONSISTENT, EINVAL),
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X (EA_TABLE_FULL, ENOSPC),
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X (END_OF_MEDIA, ENOSPC),
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X (EOM_OVERFLOW, EIO),
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X (FILEMARK_DETECTED, EIO),
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X (FILENAME_EXCED_RANGE, ENAMETOOLONG),
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X (FILE_CORRUPT, EEXIST),
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X (FILE_EXISTS, EEXIST),
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X (FILE_INVALID, ENXIO),
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X (FILE_NOT_FOUND, ENOENT),
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X (HANDLE_DISK_FULL, ENOSPC),
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X (HANDLE_EOF, ENODATA),
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X (INVALID_ADDRESS, EINVAL),
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X (INVALID_AT_INTERRUPT_TIME, EINTR),
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X (INVALID_BLOCK_LENGTH, EIO),
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X (INVALID_DATA, EINVAL),
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X (INVALID_DRIVE, ENODEV),
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X (INVALID_EA_NAME, EINVAL),
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X (INVALID_FUNCTION, EBADRQC),
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X (INVALID_HANDLE, EBADF),
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X (INVALID_NAME, ENOENT),
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X (INVALID_PARAMETER, EINVAL),
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X (INVALID_SIGNAL_NUMBER, EINVAL),
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X (IO_DEVICE, EIO),
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X (IO_PENDING, EAGAIN),
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X (LOCK_VIOLATION, EACCES),
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X (MAX_THRDS_REACHED, EAGAIN),
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X (META_EXPANSION_TOO_LONG, EINVAL),
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X (MOD_NOT_FOUND, ENOENT),
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X (MORE_DATA, EMSGSIZE),
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X (NEGATIVE_SEEK, EINVAL),
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X (NETNAME_DELETED, ENOENT),
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X (NOACCESS, EFAULT),
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X (NONPAGED_SYSTEM_RESOURCES, EAGAIN),
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X (NONE_MAPPED, EINVAL),
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X (NOT_CONNECTED, ENOLINK),
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X (NOT_ENOUGH_MEMORY, ENOMEM),
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X (NOT_OWNER, EPERM),
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X (NOT_READY, ENOMEDIUM),
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X (NOT_SAME_DEVICE, EXDEV),
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X (NOT_SUPPORTED, ENOSYS),
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X (NO_DATA, EPIPE),
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X (NO_DATA_DETECTED, EIO),
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X (NO_MEDIA_IN_DRIVE, ENOMEDIUM),
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X (NO_MORE_FILES, ENMFILE),
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X (NO_MORE_ITEMS, ENMFILE),
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X (NO_MORE_SEARCH_HANDLES, ENFILE),
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X (NO_PROC_SLOTS, EAGAIN),
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X (NO_SIGNAL_SENT, EIO),
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X (NO_SYSTEM_RESOURCES, EAGAIN),
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X (NO_TOKEN, EINVAL),
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X (OPEN_FAILED, EIO),
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X (OPEN_FILES, EAGAIN),
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X (OUTOFMEMORY, ENOMEM),
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X (PAGED_SYSTEM_RESOURCES, EAGAIN),
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X (PAGEFILE_QUOTA, EAGAIN),
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X (PATH_NOT_FOUND, ENOENT),
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X (PIPE_BUSY, EBUSY),
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X (PIPE_CONNECTED, EBUSY),
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X (PIPE_LISTENING, ECOMM),
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X (PIPE_NOT_CONNECTED, ECOMM),
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X (POSSIBLE_DEADLOCK, EDEADLOCK),
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X (PROCESS_ABORTED, EFAULT),
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X (PROC_NOT_FOUND, ESRCH),
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X (REM_NOT_LIST, ENONET),
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X (SETMARK_DETECTED, EIO),
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X (SHARING_BUFFER_EXCEEDED, ENOLCK),
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X (SHARING_VIOLATION, EBUSY),
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X (SIGNAL_PENDING, EBUSY),
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X (SIGNAL_REFUSED, EIO),
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X (THREAD_1_INACTIVE, EINVAL),
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X (TOO_MANY_LINKS, EMLINK),
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X (TOO_MANY_OPEN_FILES, EMFILE),
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X (WAIT_NO_CHILDREN, ECHILD),
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X (WORKING_SET_QUOTA, EAGAIN),
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X (WRITE_PROTECT, EROFS),
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X (SEEK, EINVAL),
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X (SECTOR_NOT_FOUND, EINVAL),
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X (IO_INCOMPLETE, EAGAIN),
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{ 0, NULL, 0}
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};
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extern "C" {
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const char *_sys_errlist[] NO_COPY_INIT =
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{
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/* NOERROR 0 */ "No error",
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/* EPERM 1 */ "Operation not permitted",
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/* ENOENT 2 */ "No such file or directory",
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/* ESRCH 3 */ "No such process",
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/* EINTR 4 */ "Interrupted system call",
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/* EIO 5 */ "Input/Output error",
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/* ENXIO 6 */ "No such device or address",
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/* E2BIG 7 */ "Argument list too long",
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/* ENOEXEC 8 */ "Exec format error",
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/* EBADF 9 */ "Bad file descriptor",
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/* ECHILD 10 */ "No child processes",
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/* EAGAIN 11 */ "Resource temporarily unavailable",
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/* ENOMEM 12 */ "Cannot allocate memory",
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/* EACCES 13 */ "Permission denied",
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/* EFAULT 14 */ "Bad address",
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/* ENOTBLK 15 */ "Block device required",
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/* EBUSY 16 */ "Device or resource busy",
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/* EEXIST 17 */ "File exists",
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/* EXDEV 18 */ "Invalid cross-device link",
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/* ENODEV 19 */ "No such device",
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/* ENOTDIR 20 */ "Not a directory",
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/* EISDIR 21 */ "Is a directory",
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/* EINVAL 22 */ "Invalid argument",
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/* ENFILE 23 */ "Too many open files in system",
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/* EMFILE 24 */ "Too many open files",
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/* ENOTTY 25 */ "Inappropriate ioctl for device",
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/* ETXTBSY 26 */ "Text file busy",
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/* EFBIG 27 */ "File too large",
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/* ENOSPC 28 */ "No space left on device",
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/* ESPIPE 29 */ "Illegal seek",
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/* EROFS 30 */ "Read-only file system",
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/* EMLINK 31 */ "Too many links",
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/* EPIPE 32 */ "Broken pipe",
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/* EDOM 33 */ "Numerical argument out of domain",
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/* ERANGE 34 */ "Numerical result out of range",
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/* ENOMSG 35 */ "No message of desired type",
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/* EIDRM 36 */ "Identifier removed",
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/* ECHRNG 37 */ "Channel number out of range",
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/* EL2NSYNC 38 */ "Level 2 not synchronized",
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/* EL3HLT 39 */ "Level 3 halted",
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/* EL3RST 40 */ "Level 3 reset",
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/* ELNRNG 41 */ "Link number out of range",
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/* EUNATCH 42 */ "Protocol driver not attached",
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/* ENOCSI 43 */ "No CSI structure available",
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/* EL2HLT 44 */ "Level 2 halted",
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/* EDEADLK 45 */ "Resource deadlock avoided",
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/* ENOLCK 46 */ "No locks available",
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"error 47",
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"error 48",
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"error 49",
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/* EBADE 50 */ "Invalid exchange",
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/* EBADR 51 */ "Invalid request descriptor",
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/* EXFULL 52 */ "Exchange full",
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/* ENOANO 53 */ "No anode",
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/* EBADRQC 54 */ "Invalid request code",
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/* EBADSLT 55 */ "Invalid slot",
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/* EDEADLOCK 56 */ "File locking deadlock error",
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/* EBFONT 57 */ "Bad font file format",
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"error 58",
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"error 59",
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/* ENOSTR 60 */ "Device not a stream",
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/* ENODATA 61 */ "No data available",
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/* ETIME 62 */ "Timer expired",
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/* ENOSR 63 */ "Out of streams resources",
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/* ENONET 64 */ "Machine is not on the network",
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/* ENOPKG 65 */ "Package not installed",
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/* EREMOTE 66 */ "Object is remote",
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/* ENOLINK 67 */ "Link has been severed",
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/* EADV 68 */ "Advertise error",
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/* ESRMNT 69 */ "Srmount error",
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/* ECOMM 70 */ "Communication error on send",
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/* EPROTO 71 */ "Protocol error",
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"error 72",
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"error 73",
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/* EMULTIHOP 74 */ "Multihop attempted",
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/* ELBIN 75 */ "Inode is remote (not really error)",
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/* EDOTDOT 76 */ "RFS specific error",
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/* EBADMSG 77 */ "Bad message",
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"error 78",
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/* EFTYPE 79 */ "Inappropriate file type or format",
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/* ENOTUNIQ 80 */ "Name not unique on network",
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/* EBADFD 81 */ "File descriptor in bad state",
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/* EREMCHG 82 */ "Remote address changed",
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/* ELIBACC 83 */ "Can not access a needed shared library",
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/* ELIBBAD 84 */ "Accessing a corrupted shared library",
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/* ELIBSCN 85 */ ".lib section in a.out corrupted",
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/* ELIBMAX 86 */ "Attempting to link in too many shared libraries",
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/* ELIBEXEC 87 */ "Cannot exec a shared library directly",
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/* ENOSYS 88 */ "Function not implemented",
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/* ENMFILE 89 */ "No more files",
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/* ENOTEMPTY 90 */ "Directory not empty",
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/* ENAMETOOLONG 91 */ "File name too long",
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/* ELOOP 92 */ "Too many levels of symbolic links",
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"error 93",
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"error 94",
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/* EOPNOTSUPP 95 */ "Operation not supported",
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/* EPFNOSUPPORT 96 */ "Protocol family not supported",
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"error 97",
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"error 98",
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"error 99",
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"error 100",
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"error 101",
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"error 102",
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"error 103",
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/* ECONNRESET 104 */ "Connection reset by peer",
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/* ENOBUFS 105 */ "No buffer space available",
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/* EAFNOSUPPORT 106 */ "Address family not supported by protocol",
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/* EPROTOTYPE 107 */ "Protocol wrong type for socket",
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/* ENOTSOCK 108 */ "Socket operation on non-socket",
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/* ENOPROTOOPT 109 */ "Protocol not available",
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/* ESHUTDOWN 110 */ "Cannot send after transport endpoint shutdown",
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/* ECONNREFUSED 111 */ "Connection refused",
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/* EADDRINUSE 112 */ "Address already in use",
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/* ECONNABORTED 113 */ "Software caused connection abort",
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/* ENETUNREACH 114 */ "Network is unreachable",
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/* ENETDOWN 115 */ "Network is down",
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/* ETIMEDOUT 116 */ "Connection timed out",
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/* EHOSTDOWN 117 */ "Host is down",
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/* EHOSTUNREACH 118 */ "No route to host",
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/* EINPROGRESS 119 */ "Operation now in progress",
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/* EALREADY 120 */ "Operation already in progress",
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/* EDESTADDRREQ 121 */ "Destination address required",
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/* EMSGSIZE 122 */ "Message too long",
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/* EPROTONOSUPPORT 123 */ "Protocol not supported",
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/* ESOCKTNOSUPPORT 124 */ "Socket type not supported",
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/* EADDRNOTAVAIL 125 */ "Cannot assign requested address",
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/* ENETRESET 126 */ "Network dropped connection on reset",
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/* EISCONN 127 */ "Transport endpoint is already connected",
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/* ENOTCONN 128 */ "Transport endpoint is not connected",
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/* ETOOMANYREFS 129 */ "Too many references: cannot splice",
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/* EPROCLIM 130 */ "Too many processes",
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/* EUSERS 131 */ "Too many users",
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/* EDQUOT 132 */ "Disk quota exceeded",
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/* ESTALE 133 */ "Stale NFS file handle",
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/* ENOTSUP 134 */ "Not supported",
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/* ENOMEDIUM 135 */ "No medium found",
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/* ENOSHARE 136 */ "No such host or network path",
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/* ECASECLASH 137 */ "Filename exists with different case",
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/* EILSEQ 138 */ "Invalid or incomplete multibyte or wide character",
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/* EOVERFLOW 139 */ "Value too large for defined data type",
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/* ECANCELED 140 */ "Operation canceled",
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/* ENOTRECOVERABLE 141 */ "State not recoverable",
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/* EOWNERDEAD 142 */ "Previous owner died",
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/* ESTRPIPE 143 */ "Streams pipe error"
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};
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int NO_COPY_INIT _sys_nerr = sizeof (_sys_errlist) / sizeof (_sys_errlist[0]);
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};
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int __stdcall
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geterrno_from_win_error (DWORD code, int deferrno)
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{
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for (int i = 0; errmap[i].w != 0; ++i)
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if (code == errmap[i].w)
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{
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syscall_printf ("windows error %u == errno %d", code, errmap[i].e);
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return errmap[i].e;
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}
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syscall_printf ("unknown windows error %u, setting errno to %d", code,
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deferrno);
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return deferrno; /* FIXME: what's so special about EACCESS? */
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}
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/* seterrno_from_win_error: Given a Windows error code, set errno
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as appropriate. */
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void __stdcall
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seterrno_from_win_error (const char *file, int line, DWORD code)
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{
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syscall_printf ("%s:%d windows error %d", file, line, code);
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errno = _impure_ptr->_errno = geterrno_from_win_error (code, EACCES);
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}
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/* seterrno_from_nt_status: Given a NT status code, set errno
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as appropriate. */
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void __stdcall
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seterrno_from_nt_status (const char *file, int line, NTSTATUS status)
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{
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DWORD code = RtlNtStatusToDosError (status);
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SetLastError (code);
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syscall_printf ("%s:%d status %p -> windows error %d",
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file, line, status, code);
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errno = _impure_ptr->_errno = geterrno_from_win_error (code, EACCES);
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}
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/* seterrno: Set `errno' based on GetLastError (). */
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void __stdcall
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seterrno (const char *file, int line)
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{
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seterrno_from_win_error (file, line, GetLastError ());
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}
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extern char *_user_strerror _PARAMS ((int));
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static char *
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strerror_worker (int errnum)
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{
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char *res;
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if (errnum >= 0 && errnum < _sys_nerr)
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res = (char *) _sys_errlist [errnum];
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else
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res = NULL;
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return res;
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}
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/* strerror: convert from errno values to error strings */
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extern "C" char *
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strerror (int errnum)
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{
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char *errstr = strerror_worker (errnum);
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if (!errstr)
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__small_sprintf (errstr = _my_tls.locals.strerror_buf, "Unknown error %u",
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(unsigned) errnum);
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return errstr;
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}
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#if 0
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extern "C" int
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strerror_r (int errnum, char *buf, size_t n)
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{
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char *errstr = strerror_worker (errnum);
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if (!errstr)
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return EINVAL;
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if (strlen (errstr) >= n)
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return ERANGE;
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strcpy (buf, errstr);
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return 0;
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}
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#endif
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