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📄 Makefile.inc(3.9 KB)
📄 Symbol.map(2.58 KB)
📄 _flock_stub.c(3.65 KB)
📄 asprintf.c(2.34 KB)
📄 clrerr.c(2.13 KB)
📄 dprintf.c(1.68 KB)
📄 fclose.3(4.04 KB)
📄 fclose.c(3.66 KB)
📄 fcloseall.c(1.55 KB)
📄 fdopen.c(3.41 KB)
📄 feof.c(2.14 KB)
📄 ferror.3(3.67 KB)
📄 ferror.c(2.16 KB)
📄 fflush.3(3.67 KB)
📄 fflush.c(4.15 KB)
📄 fgetc.c(2.18 KB)
📄 fgetln.3(4.45 KB)
📄 fgetln.c(4.62 KB)
📄 fgetpos.c(2.07 KB)
📄 fgets.3(3.76 KB)
📄 fgets.c(3.37 KB)
📄 fgetwc.c(3.02 KB)
📄 fgetwln.3(3.49 KB)
📄 fgetwln.c(2.74 KB)
📄 fgetws.3(3.47 KB)
📄 fgetws.c(3.46 KB)
📄 fileno.c(2.16 KB)
📄 findfp.c(6.1 KB)
📄 flags.c(3.1 KB)
📄 floatio.h(2.43 KB)
📄 flockfile.3(3.05 KB)
📄 fmemopen.c(5.74 KB)
📄 fopen.3(7.66 KB)
📄 fopen.c(3.33 KB)
📄 fopencookie.3(3.9 KB)
📄 fopencookie.c(4.04 KB)
📄 fprintf.c(2.52 KB)
📄 fpurge.c(2.41 KB)
📄 fputc.c(2.29 KB)
📄 fputs.3(3.2 KB)
📄 fputs.c(2.63 KB)
📄 fputwc.c(2.52 KB)
📄 fputws.3(2.71 KB)
📄 fputws.c(2.64 KB)
📄 fread.3(3.77 KB)
📄 fread.c(3.53 KB)
📄 freopen.c(7.35 KB)
📄 fscanf.c(2.71 KB)
📄 fseek.3(6.03 KB)
📄 fseek.c(7.46 KB)
📄 fsetpos.c(2.03 KB)
📄 ftell.c(3.78 KB)
📄 funopen.3(4.71 KB)
📄 funopen.c(2.59 KB)
📄 fvwrite.c(5.7 KB)
📄 fvwrite.h(1.96 KB)
📄 fwalk.c(2.48 KB)
📄 fwide.3(2.58 KB)
📄 fwide.c(1.83 KB)
📄 fwprintf.c(2.06 KB)
📄 fwrite.c(3.45 KB)
📄 fwscanf.c(2.04 KB)
📄 getc.3(4.41 KB)
📄 getc.c(2.27 KB)
📄 getchar.c(2.34 KB)
📄 getdelim.c(4.17 KB)
📄 getline.3(3.56 KB)
📄 getline.c(1.6 KB)
📄 gets.c(2.56 KB)
📄 gets_s.c(3.03 KB)
📄 getw.c(1.97 KB)
📄 getwc.3(3.31 KB)
📄 getwc.c(2.01 KB)
📄 getwchar.c(1.93 KB)
📄 glue.h(1.95 KB)
📄 local.h(5.46 KB)
📄 makebuf.c(3.61 KB)
📄 mktemp.3(7.46 KB)
📄 mktemp.c(5.04 KB)
📄 open_memstream.3(4.61 KB)
📄 open_memstream.c(4.79 KB)
📄 open_wmemstream.c(6.34 KB)
📄 perror.c(2.55 KB)
📄 printf-pos.c(17.48 KB)
📄 printf.3(22.15 KB)
📄 printf.c(2.43 KB)
📄 printf_l.3(3.15 KB)
📄 printfcommon.h(7.42 KB)
📄 printflocal.h(3.3 KB)
📄 putc.3(4.1 KB)
📄 putc.c(2.29 KB)
📄 putchar.c(2.36 KB)
📄 puts.c(2.49 KB)
📄 putw.c(2.28 KB)
📄 putwc.3(2.79 KB)
📄 putwc.c(2.09 KB)
📄 putwchar.c(2 KB)
📄 refill.c(4.04 KB)
📄 remove.3(2.52 KB)
📄 remove.c(2.11 KB)
📄 rewind.c(2.26 KB)
📄 rget.c(2.12 KB)
📄 scanf.3(11.79 KB)
📄 scanf.c(2.68 KB)
📄 scanf_l.3(2.7 KB)
📄 setbuf.3(5.54 KB)
📄 setbuf.c(2.02 KB)
📄 setbuffer.c(2.11 KB)
📄 setvbuf.c(4.71 KB)
📄 snprintf.c(3.12 KB)
📄 sprintf.c(2.54 KB)
📄 sscanf.c(2.52 KB)
📄 stdio.3(10.54 KB)
📄 stdio.c(4.27 KB)
📄 swprintf.c(2.09 KB)
📄 swscanf.c(2.07 KB)
📄 tempnam.c(2.86 KB)
📄 tmpfile.c(2.83 KB)
📄 tmpnam.3(6.08 KB)
📄 tmpnam.c(2.27 KB)
📄 ungetc.3(3.19 KB)
📄 ungetc.c(4.5 KB)
📄 ungetwc.3(3.13 KB)
📄 ungetwc.c(2.57 KB)
📄 vasprintf.c(2.52 KB)
📄 vdprintf.c(2.23 KB)
📄 vfprintf.c(26.28 KB)
📄 vfscanf.c(24.59 KB)
📄 vfwprintf.c(27.54 KB)
📄 vfwscanf.c(21.37 KB)
📄 vprintf.c(2.3 KB)
📄 vscanf.c(2.54 KB)
📄 vsnprintf.c(2.91 KB)
📄 vsprintf.c(2.58 KB)
📄 vsscanf.c(2.72 KB)
📄 vswprintf.c(3.32 KB)
📄 vswscanf.c(3.36 KB)
📄 vwprintf.c(1.9 KB)
📄 vwscanf.c(1.9 KB)
📄 wbuf.c(3.25 KB)
📄 wprintf.3(15.62 KB)
📄 wprintf.c(2.02 KB)
📄 wscanf.3(11.31 KB)
📄 wscanf.c(2 KB)
📄 wsetup.c(3.05 KB)
📄 xprintf.c(16.71 KB)
📄 xprintf_errno.c(2.18 KB)
📄 xprintf_float.c(11.33 KB)
📄 xprintf_hexdump.c(2.65 KB)
📄 xprintf_int.c(10.47 KB)
📄 xprintf_quote.c(2.83 KB)
📄 xprintf_str.c(5.04 KB)
📄 xprintf_time.c(3.46 KB)
📄 xprintf_vis.c(2.41 KB)

Editing: fopencookie.c

/*
 * Copyright (c) 2016, EMC / Isilon Storage Division
 * All rights reserved.
 *
 * 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.
 *
 * 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 HOLDERS 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.
 */

#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");

#include <sys/fcntl.h>

#include <errno.h>
#include <stdio.h>
#include <stdlib.h>

#include "local.h"

struct fopencookie_thunk {
	void			*foc_cookie;
	cookie_io_functions_t	foc_io;
};

static int _fopencookie_read(void *, char *, int);
static int _fopencookie_write(void *, const char *, int);
static fpos_t _fopencookie_seek(void *, fpos_t, int);
static int _fopencookie_close(void *);

FILE *
fopencookie(void *cookie, const char *mode, cookie_io_functions_t io_funcs)
{
	int (*readfn)(void *, char *, int);
	int (*writefn)(void *, const char *, int);
	struct fopencookie_thunk *thunk;
	FILE *fp;
	int flags, oflags;

if ((flags = __sflags(mode, &oflags)) == 0)
		return (NULL);

thunk = malloc(sizeof(*thunk));
	if (thunk == NULL)
		return (NULL);

thunk->foc_cookie = cookie;
	thunk->foc_io = io_funcs;

readfn = _fopencookie_read;
	writefn = _fopencookie_write;
	if (flags == __SWR)
		readfn = NULL;
	else if (flags == __SRD)
		writefn = NULL;

fp = funopen(thunk, readfn, writefn, _fopencookie_seek,
	    _fopencookie_close);
	if (fp == NULL) {
		free(thunk);
		return (NULL);
	}

if ((oflags & O_APPEND) != 0)
		fp->_flags |= __SAPP;

return (fp);
}

static int
_fopencookie_read(void *cookie, char *buf, int size)
{
	struct fopencookie_thunk *thunk;

thunk = cookie;

/* Reads from a stream with NULL read return EOF. */
	if (thunk->foc_io.read == NULL)
		return (0);

return ((int)thunk->foc_io.read(thunk->foc_cookie, buf, (size_t)size));
}

static int
_fopencookie_write(void *cookie, const char *buf, int size)
{
	struct fopencookie_thunk *thunk;

thunk = cookie;

/* Writes to a stream with NULL write discard data. */
	if (thunk->foc_io.write == NULL)
		return (size);

return ((int)thunk->foc_io.write(thunk->foc_cookie, buf,
		(size_t)size));
}

static fpos_t
_fopencookie_seek(void *cookie, fpos_t offset, int whence)
{
	struct fopencookie_thunk *thunk;
	off64_t off64;
	int res;

switch (whence) {
	case SEEK_SET:
	case SEEK_CUR:
	case SEEK_END:
		break;
	default:
		/* fopencookie(3) only allows these three seek modes. */
		errno = EINVAL;
		return (-1);
	}

thunk = cookie;

/*
	 * If seek is NULL, it is not possible to perform seek operations on
	 * the stream.
	 */
	if (thunk->foc_io.seek == NULL) {
		errno = ENOTSUP;
		return (-1);
	}

off64 = (off64_t)offset;
	res = thunk->foc_io.seek(thunk->foc_cookie, &off64, whence);
	if (res < 0)
		return (res);

return ((fpos_t)off64);
}

static int
_fopencookie_close(void *cookie)
{
	struct fopencookie_thunk *thunk;
	int ret, serrno;

ret = 0;
	thunk = cookie;
	if (thunk->foc_io.close != NULL)
		ret = thunk->foc_io.close(thunk->foc_cookie);

serrno = errno;
	free(thunk);
	errno = serrno;
	return (ret);
}

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Editing: fopencookie.c

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