/usr/include/diet/io.h is in libowfat-dietlibc-dev 0.29-4.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 | /* this header file comes from libowfat, http://www.fefe.de/libowfat/ */
#ifndef IO_H
#define IO_H
/* http://cr.yp.to/lib/io.html */
#include "uint64.h"
#include "taia.h"
#ifdef __cplusplus
extern "C" {
#endif
/* like open(s,O_RDONLY) */
/* return 1 if ok, 0 on error */
int io_readfile(int64* d,const char* s);
/* like open(s,O_WRONLY|O_CREAT|O_TRUNC,0600) */
/* return 1 if ok, 0 on error */
int io_createfile(int64* d,const char* s);
/* like open(s,O_RDWR) */
/* return 1 if ok, 0 on error */
int io_readwritefile(int64* d,const char* s);
/* like open(s,O_WRONLY|O_APPEND|O_CREAT,0600) */
/* return 1 if ok, 0 on error */
int io_appendfile(int64* d,const char* s);
/* like pipe(d) */
/* return 1 if ok, 0 on error */
int io_pipe(int64* d);
/* like socketpair() */
/* return 1 if ok, 0 on error */
int io_socketpair(int64* d);
/* non-blocking read(), -1 for EAGAIN and -3+errno for other errors */
int64 io_tryread(int64 d,char* buf,int64 len);
/* blocking read(), with -3 instead of -1 for errors */
int64 io_waitread(int64 d,char* buf,int64 len);
/* non-blocking write(), -1 for EAGAIN and -3+errno for other errors */
int64 io_trywrite(int64 d,const char* buf,int64 len);
/* blocking write(), with -3 instead of -1 for errors */
int64 io_waitwrite(int64 d,const char* buf,int64 len);
/* modify timeout attribute of file descriptor */
void io_timeout(int64 d,tai6464 t);
/* like io_tryread but will return -2,errno=ETIMEDOUT if d has a timeout
* associated and it is passed without input being there */
int64 io_tryreadtimeout(int64 d,char* buf,int64 len);
/* like io_trywrite but will return -2,errno=ETIMEDOUT if d has a timeout
* associated and it is passed without being able to write */
int64 io_trywritetimeout(int64 d,const char* buf,int64 len);
void io_wantread(int64 d);
void io_wantwrite(int64 d);
void io_dontwantread(int64 d);
void io_dontwantwrite(int64 d);
void io_wait();
void io_waituntil(tai6464 t);
int64 io_waituntil2(int64 milliseconds);
void io_check();
/* signal that read/accept/whatever returned EAGAIN */
/* needed for SIGIO */
void io_eagain(int64 d);
/* return next descriptor from io_wait that can be read from */
int64 io_canread();
/* return next descriptor from io_wait that can be written to */
int64 io_canwrite();
/* return next descriptor with expired timeout */
int64 io_timeouted();
/* put d on internal data structure, return 1 on success, 0 on error */
int io_fd(int64 d); /* use this for sockets before you called connect() or accept() */
int io_fd_canwrite(int64 d); /* use this for connected sockets (assumes socket is writable) */
void io_setcookie(int64 d,void* cookie);
void* io_getcookie(int64 d);
/* put descriptor in non-blocking mode */
void io_nonblock(int64 d);
/* put descriptor in blocking mode */
void io_block(int64 d);
/* put descriptor in close-on-exec mode */
void io_closeonexec(int64 d);
void io_close(int64 d);
/* Free the internal data structures from libio.
* This only makes sense if you run your program in a malloc checker and
* these produce false alarms. Your OS will free these automatically on
* process termination. */
void io_finishandshutdown(void);
/* send n bytes from file fd starting at offset off to socket s */
/* return number of bytes written */
int64 io_sendfile(int64 s,int64 fd,uint64 off,uint64 n);
/* Pass fd over sock (must be a unix domain socket) to other process.
* Return 0 if ok, -1 on error, setting errno. */
int io_passfd(int64 sock,int64 fd);
/* Receive fd over sock (must be a unix domain socket) from other
* process. Return sock if ok, -1 on error, setting errno. */
int64 io_receivefd(int64 sock);
int io_starteventloopthread(unsigned int threads);
typedef int64 (*io_write_callback)(int64 s,const void* buf,uint64 n);
/* used internally, but hey, who knows */
int64 io_mmapwritefile(int64 out,int64 in,uint64 off,uint64 bytes,io_write_callback writecb);
#ifdef __MINGW32__
#include_next <io.h>
#endif
#ifdef __cplusplus
}
#endif
#endif
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