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mntlib32.zoo
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sysconf.c
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C/C++ Source or Header
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1993-02-28
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80 lines
/*
* sysconf() and pathconf() for TOS/MiNT (kinda POSIXy)
* Written by Dave Gymer and placed in the Public Domain
*
* NOTE: this file will have to be updated as and when MiNT gains
* new Sysconf() and Dpathconf() variables, as will unistd.h, so that
* TOS programs get the correct values back. (But who uses TOS? :-)
*/
#include <unistd.h>
#include <mintbind.h>
#include <errno.h>
#include <limits.h>
#ifndef _COMPILER_H
#include <compiler.h> /* ++ ers */
#endif
#include "lib.h"
extern int __mint;
#define UNLIMITED (0x7fffffffL)
long
sysconf(var)
int var;
{
if(__mint)
return Sysconf(var);
switch(var) {
case _SC_LAST:
return 4;
case _SC_MEMR_MAX:
return UNLIMITED; /* not true for TOS < 1.4 :-( */
case _SC_ARG_MAX:
return 127; /* ignore this, cuz we can pass via the env */
case _SC_OPEN_MAX:
return 45; /* think I read this somewhere */
case _SC_NGROUPS_MAX:
return 0; /* this is bad news :-( */
case _SC_CHILD_MAX:
return UNLIMITED; /* good 'ol TOS :-) */
default:
return EINVAL;
}
}
long
pathconf(_path, var)
const char *_path;
int var;
{
long r;
char path[PATH_MAX];
if(__mint) {
_unx2dos (_path, path);
r = Dpathconf(path, var);
if (var == _PC_NO_TRUNC)
return r ? -1 : 0;
return r;
}
switch(var) {
case _PC_LAST:
return 3;
case _PC_IOPEN_MAX:
return 45; /* -ish, maybe... */
case _PC_LINK_MAX:
return 1;
case _PC_PATH_MAX:
return 128; /* I'm sure I read that this is 64 in TOS 1.0 */
case _PC_NAME_MAX:
return 12;
case _PC_NO_TRUNC:
return -1; /* file names are automatically truncated */
default: /* note that _PC_PIPE_BUF is invalid */
return EINVAL;
}
}