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/*********************************************************************/
/* */
/* This Program Written By Paul Edwards. */
/* Released to the public domain. */
/* */
/*********************************************************************/
/*********************************************************************/
/* */
/* unixio - Unix I/O functions written in terms of standard C */
/* functions. */
/* */
/*********************************************************************/
#include <stdio.h>
#ifdef fileno
#undef fileno
#endif
#include "unixio.h"
static FILE *files[FOPEN_MAX];
/*char *environ[] = { NULL };*/
int open(const char *fnm, int mode, ...)
{
int x;
char *modestr;
for (x = 3; x < FOPEN_MAX; x++)
{
if (files[x] == NULL)
{
break;
}
}
if (x == FOPEN_MAX)
{
return (-1);
}
if (mode == O_RDONLY)
{
modestr = "r";
}
else if (mode == O_WRONLY)
{
modestr = "w";
}
else if (mode == O_RDWR)
{
modestr = "r+";
}
files[x] = fopen(fnm, modestr);
if (files[x] == NULL)
{
return (-1);
}
return (x);
}
int read(int fno, void *buf, size_t bytes)
{
size_t rb;
if (fno < 3)
{
rb = fread(buf, 1, bytes, stdin);
}
else
{
rb = fread(buf, 1, bytes, files[fno]);
}
return ((int)rb);
}
int write(int fno, const void *buf, size_t bytes)
{
size_t wb = 0;
if (fno == 1)
{
wb = fwrite(buf, 1, bytes, stdout);
}
else if (fno == 2)
{
wb = fwrite(buf, 1, bytes, stderr);
}
else if (fno > 2)
{
wb = fwrite(buf, 1, bytes, files[fno]);
}
return ((int)wb);
}
int close(int fno)
{
if (fno >= 3)
{
fclose(files[fno]);
files[fno] = NULL;
}
return (0);
}
char *getcwd(char *buf, int len)
{
if (len != 0)
{
*buf = '\0';
}
return (buf);
}
void unlink(char *f)
{
remove(f);
return;
}
int stat(char *f, struct stat *buf)
{
memset(buf, '\0', sizeof *buf);
return (0);
}
int fileno(FILE *fp)
{
return (0);
}
int access(char *f, int n)
{
return (1);
}
int fstat(int fh, struct stat *buf)
{
memset(buf, '\0', sizeof *buf);
return (0);
}
int pwait(int a, int *b, int c)
{
return (0);
}
int putenv(char *x)
{
return (0);
}
char *mktemp(char *s)
{
return (tmpnam(s));
}
int chdir(char *path)
{
return (0);
}
int rmdir(char *path)
{
return (0);
}
int mkdir(char *path, int permissions)
{
return (0);
}
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