/************************************************************************
* include/errno.h
*
* Copyright (C) 2007-2009, 2011 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
************************************************************************/
#ifndef __INCLUDE_ERRNO_H
#define __INCLUDE_ERRNO_H
/************************************************************************
* Included Files
************************************************************************/
#include <nuttx/compiler.h>
/************************************************************************
* Pre-processor Definitions
************************************************************************/
/* How can we access the errno variable? */
#if !defined(CONFIG_BUILD_PROTECTED) && !defined(CONFIG_BUILD_KERNEL)
/* Flat build */
# if defined(CONFIG_LIB_SYSCALL) && !defined(__KERNEL__)
/* We still might be using system calls in user code. If so, then
* user code will have no direct access to the errno variable.
*/
# undef __DIRECT_ERRNO_ACCESS
# else
/* Flat build with no system calls OR internal kernel logic... There
* is direct access.
*/
# define __DIRECT_ERRNO_ACCESS 1
# endif
#elif defined(CONFIG_BUILD_PROTECTED)
# if defined(__KERNEL__)
/* Kernel portion of protected build. Kernel code has direct access */
# define __DIRECT_ERRNO_ACCESS 1
# else
/* User portion of protected build. Application code has only indirect
* access
*/
# undef __DIRECT_ERRNO_ACCESS
# endif
#elif defined(CONFIG_BUILD_KERNEL) && !defined(__KERNEL__)
# if defined(__KERNEL__)
/* Kernel build. Kernel code has direct access */
# define __DIRECT_ERRNO_ACCESS 1
# else
/* User libraries for the kernel. Only indirect access from user
* libraries */
# undef __DIRECT_ERRNO_ACCESS
# endif
#endif
/* Convenience/compatibility definition.
*
* For a flat, all kernel-mode build, the error can be read and written
* from all code using a simple pointer.
*/
#ifdef __DIRECT_ERRNO_ACCESS
# define errno *get_errno_ptr()
# define set_errno(e) do { errno = (int)(e); } while (0)
# define get_errno(e) errno
#else
/* We doing separate user-/kernel-mode builds, then the errno has to be
* a little differently. In kernel-mode, the TCB errno value can still be
* read and written using a pointer from code executing within the
* kernel.
*
* But in user-mode, the errno can only be read using the name 'errno'.
* The non-standard API set_errno() must explicitly be used from user-
* mode code in order to set the errno value.
*
* The same is true of the case where we have syscalls enabled but this
* is not a kernel build, then we really have no option but to use the
* set_errno() accessor function explicitly, even from OS logic!
*/
# define errno get_errno()
#endif /* __DIRECT_ERRNO_ACCESS */
/* Definitions of error numbers and the string that would be
* returned by strerror().
*/
#define EPERM 1
#define EPERM_STR "Operation not permitted"
#define ENOENT 2
#define ENOENT_STR "No such file or directory"
#define ESRCH 3
#define ESRCH_STR "No such process"
#define EINTR 4
#define EINTR_STR "Interrupted system call"
#define EIO 5
#define EIO_STR "I/O error"
#define ENXIO 6
#define ENXIO_STR "No such device or address"
#define E2BIG 7
#define E2BIG_STR "Arg list too long"
#define ENOEXEC 8
#define ENOEXEC_STR "Exec format error"
#define EBADF 9
#define EBADF_STR "Bad file number"
#define ECHILD 10
#define ECHILD_STR "No child processes"
#define EAGAIN 11
#define EWOULDBLOCK EAGAIN
#define EAGAIN_STR "Try again"
#define ENOMEM 12
#define ENOMEM_STR "Out of memory"
#define EACCES 13
#define EACCES_STR "Permission denied"
#define EFAULT 14
#define EFAULT_STR "Bad address"
#define ENOTBLK 15
#define ENOTBLK_STR "Block device required"
#define EBUSY 16
#define EBUSY_STR "Device or resource busy"
#define EEXIST 17
#define EEXIST_STR "File exists"
#define EXDEV 18
#define EXDEV_STR "Cross-device link"
#define ENODEV 19
#define ENODEV_STR "No such device"
#define ENOTDIR 20
#define ENOTDIR_STR "Not a directory"
#define EISDIR 21
#define EISDIR_STR "Is a directory"
#define EINVAL 22
#define EINVAL_STR "Invalid argument"
#define ENFILE 23
#define ENFILE_STR "File table overflow"
#define EMFILE 24
#define EMFILE_STR "Too many open files"
#define ENOTTY 25
#define ENOTTY_STR "Not a typewriter"
#define ETXTBSY 26
#define ETXTBSY_STR "Text file busy"
#define EFBIG 27
#define EFBIG_STR "File too large"
#define ENOSPC 28
#define ENOSPC_STR "No space left on device"
#define ESPIPE 29
#define ESPIPE_STR "Illegal seek"
#define EROFS 30
#define EROFS_STR "Read-only file system"
#define EMLINK 31
#define EMLINK_STR "Too many links"
#define EPIPE 32
#define EPIPE_STR "Broken pipe"
#define EDOM 33
#define EDOM_STR "Math argument out of domain of func"
#define ERANGE 34
#define ERANGE_STR "Math result not representable"
#define EDEADLK 35
#define EDEADLOCK EDEADLK
#define EDEADLK_STR "Resource deadlock would occur"
#define ENAMETOOLONG 36
#define ENAMETOOLONG_STR "File name too long"
#define ENOLCK 37
#define ENOLCK_STR "No record locks available"
#define ENOSYS 38
#define ENOSYS_STR "Function not implemented"
#define ENOTEMPTY 39
#define ENOTEMPTY_STR "Directory not empty"
#define ELOOP 40
#define ELOOP_STR "Too many symbolic links encountered"
#define ENOMSG 42
#define ENOMSG_STR "No message of desired type"
#define EIDRM 43
#define EIDRM_STR "Identifier removed"
#define ECHRNG 44
#define ECHRNG_STR "Channel number out of range"
#define EL2NSYNC 45
#define EL2NSYNC_STR "Level 2 not synchronized"
#define EL3HLT 46
#define EL3HLT_STR "Level 3 halted"
#define EL3RST 47
#define EL3RST_STR "Level 3 reset"
#define ELNRNG 48
#define ELNRNG_STR "Link number out of range"
#define EUNATCH 49
#define EUNATCH_STR "Protocol driver not attached"
#define ENOCSI 50
#define ENOCSI_STR "No CSI structure available"
#define EL2HLT 51
#define EL2HLT_STR "Level 2 halted"
#define EBADE 52
#define EBADE_STR "Invalid exchange"
#define EBADR 53
#define EBADR_STR "Invalid request descriptor"
#define EXFULL 54
#define EXFULL_STR "Exchange full"
#define ENOANO 55
#define ENOANO_STR "No anode"
#define EBADRQC 56
#define EBADRQC_STR "Invalid request code"
#define EBADSLT 57
#define EBADSLT_STR "Invalid slot"
#define EBFONT 59
#define EBFONT_STR "Bad font file format"
#define ENOSTR 60
#define ENOSTR_STR "Device not a stream"
#define ENODATA 61
#define ENODATA_STR "No data available"
#define ETIME 62
#define ETIME_STR "Timer expired"
#define ENOSR 63
#define ENOSR_STR "Out of streams resources"
#define ENONET 64
#define ENONET_STR "Machine is not on the network"
#define ENOPKG 65
#define ENOPKG_STR "Package not installed"
#define EREMOTE 66
#define EREMOTE_STR "Object is remote"
#define ENOLINK 67
#define ENOLINK_STR "Link has been severed"
#define EADV 68
#define EADV_STR "Advertise error"
#define ESRMNT 69
#define ESRMNT_STR "Srmount error"
#define ECOMM 70
#define ECOMM_STR "Communication error on send"
#define EPROTO 71
#define EPROTO_STR "Protocol error"
#define EMULTIHOP 72
#define EMULTIHOP_STR "Multihop attempted"
#define EDOTDOT 73
#define EDOTDOT_STR "RFS specific error"
#define EBADMSG 74
#define EBADMSG_STR "Not a data message"
#define EOVERFLOW 75
#define EOVERFLOW_STR "Value too large for defined data type"
#define ENOTUNIQ 76
#define ENOTUNIQ_STR "Name not unique on network"
#define EBADFD 77
#define EBADFD_STR "File descriptor in bad state"
#define EREMCHG 78
#define EREMCHG_STR "Remote address changed"
#define ELIBACC 79
#define ELIBACC_STR "Can not access a needed shared library"
#define ELIBBAD 80
#define ELIBBAD_STR "Accessing a corrupted shared library"
#define ELIBSCN 81
#define ELIBSCN_STR ".lib section in a.out corrupted"
#define ELIBMAX 82
#define ELIBMAX_STR "Attempting to link in too many shared libraries"
#define ELIBEXEC 83
#define ELIBEXEC_STR "Cannot exec a shared library directly"
#define EILSEQ 84
#define EILSEQ_STR "Illegal byte sequence"
#define ERESTART 85
#define ERESTART_STR "Interrupted system call should be restarted"
#define ESTRPIPE 86
#define ESTRPIPE_STR "Streams pipe error"
#define EUSERS 87
#define EUSERS_STR "Too many users"
#define ENOTSOCK 88
#define ENOTSOCK_STR "Socket operation on non-socket"
#define EDESTADDRREQ 89
#define EDESTADDRREQ_STR "Destination address required"
#define EMSGSIZE 90
#define EMSGSIZE_STR "Message too long"
#define EPROTOTYPE 91
#define EPROTOTYPE_STR "Protocol wrong type for socket"
#define ENOPROTOOPT 92
#define ENOPROTOOPT_STR "Protocol not available"
#define EPROTONOSUPPORT 93
#define EPROTONOSUPPORT_STR "Protocol not supported"
#define ESOCKTNOSUPPORT 94
#define ESOCKTNOSUPPORT_STR "Socket type not supported"
#define EOPNOTSUPP 95
#define EOPNOTSUPP_STR "Operation not supported on transport endpoint"
#define EPFNOSUPPORT 96
#define EPFNOSUPPORT_STR "Protocol family not supported"
#define EAFNOSUPPORT 97
#define EAFNOSUPPORT_STR "Address family not supported by protocol"
#define EADDRINUSE 98
#define EADDRINUSE_STR "Address already in use"
#define EADDRNOTAVAIL 99
#define EADDRNOTAVAIL_STR "Cannot assign requested address"
#define ENETDOWN 100
#define ENETDOWN_STR "Network is down"
#define ENETUNREACH 101
#define ENETUNREACH_STR "Network is unreachable"
#define ENETRESET 102
#define ENETRESET_STR "Network dropped connection because of reset"
#define ECONNABORTED 103
#define ECONNABORTED_STR "Software caused connection abort"
#define ECONNRESET 104
#define ECONNRESET_STR "Connection reset by peer"
#define ENOBUFS 105
#define ENOBUFS_STR "No buffer space available"
#define EISCONN 106
#define EISCONN_STR "Transport endpoint is already connected"
#define ENOTCONN 107
#define ENOTCONN_STR "Transport endpoint is not connected"
#define ESHUTDOWN 108
#define ESHUTDOWN_STR "Cannot send after transport endpoint shutdown"
#define ETOOMANYREFS 109
#define ETOOMANYREFS_STR "Too many references: cannot splice"
#define ETIMEDOUT 110
#define ETIMEDOUT_STR "Connection timed out"
#define ECONNREFUSED 111
#define ECONNREFUSED_STR "Connection refused"
#define EHOSTDOWN 112
#define EHOSTDOWN_STR "Host is down"
#define EHOSTUNREACH 113
#define EHOSTUNREACH_STR "No route to host"
#define EALREADY 114
#define EALREADY_STR "Operation already in progress"
#define EINPROGRESS 115
#define EINPROGRESS_STR "Operation now in progress"
#define ESTALE 116
#define ESTALE_STR "Stale NFS file handle"
#define EUCLEAN 117
#define EUCLEAN_STR "Structure needs cleaning"
#define ENOTNAM 118
#define ENOTNAM_STR "Not a XENIX named type file"
#define ENAVAIL 119
#define ENAVAIL_STR "No XENIX semaphores available"
#define EISNAM 120
#define EISNAM_STR "Is a named type file"
#define EREMOTEIO 121
#define EREMOTEIO_STR "Remote I/O error"
#define EDQUOT 122
#define EDQUOT_STR "Quota exceeded"
#define ENOMEDIUM 123
#define ENOMEDIUM_STR "No medium found"
#define EMEDIUMTYPE 124
#define EMEDIUMTYPE_STR "Wrong medium type"
#define ECANCELED 125
#define ECANCELED_STR "Operation cancelled"
/************************************************************************
* Type Declarations
************************************************************************/
/************************************************************************
* Global Function Prototypes
************************************************************************/
#undef EXTERN
#if defined(__cplusplus)
#define EXTERN extern "C"
extern "C"
{
#else
#define EXTERN extern
#endif
/* Return a pointer to the thread specific errno. NOTE: When doing a
* kernel-/user-mode build, this function can only be used within the
* kernel-mode space.
*
* In the user-mode space, set_errno() and get_errno() are always available,
* either as macros or via syscalls.
*/
FAR int *get_errno_ptr(void);
#ifndef __DIRECT_ERRNO_ACCESS
void set_errno(int errcode);
int get_errno(void);
#endif
#undef EXTERN
#if defined(__cplusplus)
}
#endif
#endif /* __INCLUDE_ERRNO_H */
