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huntedbytheirsandSisyphus aca40a69b0 Add public headers
Declarations for the string core, stdio, stdlib, unistd, errno, sys/types, and the raw syscall interface; the FILE layout stays private in src/internal.h.

Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent)

Co-authored-by: Sisyphus <[email protected]>
2026-08-30 04:09:45 -04:00

60 lines
2.1 KiB
C

/*
* errno.h — error codes for nulsl-libc.
*
* Single-threaded for now: errno is a plain global. If nulsl-libc ever
* grows threads, this becomes a TLS slot or an __errno_location()
* indirection without changing any caller.
*/
#ifndef _NULSL_ERRNO_H
#define _NULSL_ERRNO_H
#ifdef __cplusplus
extern "C" {
#endif
extern int errno;
/* The classic 1-34, values locked by Linux's errno(3) man page. */
#define EPERM 1 /* Operation not permitted */
#define ENOENT 2 /* No such file or directory */
#define ESRCH 3 /* No such process */
#define EINTR 4 /* Interrupted system call */
#define EIO 5 /* I/O error */
#define ENXIO 6 /* No such device or address */
#define E2BIG 7 /* Argument list too long */
#define ENOEXEC 8 /* Exec format error */
#define EBADF 9 /* Bad file descriptor */
#define ECHILD 10 /* No child processes */
#define EAGAIN 11 /* Try again */
#define ENOMEM 12 /* Out of memory */
#define EACCES 13 /* Permission denied */
#define EFAULT 14 /* Bad address */
#define ENOTBLK 15 /* Block device required */
#define EBUSY 16 /* Device or resource busy */
#define EEXIST 17 /* File exists */
#define EXDEV 18 /* Cross-device link */
#define ENODEV 19 /* No such device */
#define ENOTDIR 20 /* Not a directory */
#define EISDIR 21 /* Is a directory */
#define EINVAL 22 /* Invalid argument */
#define ENFILE 23 /* File table overflow */
#define EMFILE 24 /* Too many open files */
#define ENOTTY 25 /* Not a typewriter */
#define ETXTBSY 26 /* Text file busy */
#define EFBIG 27 /* File too large */
#define ENOSPC 28 /* No space left on device */
#define ESPIPE 29 /* Illegal seek */
#define EROFS 30 /* Read-only file system */
#define EMLINK 31 /* Too many links */
#define EPIPE 32 /* Broken pipe */
#define EDOM 33 /* Math argument out of domain */
#define ERANGE 34 /* Math result not representable */
#define ENOSYS 38 /* Function not implemented */
#ifdef __cplusplus
}
#endif
#endif /* _NULSL_ERRNO_H */