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/* Copyright (C) 1997 DJ Delorie, see COPYING.DJ for details */
/* Copyright (C) 1995 DJ Delorie, see COPYING.DJ for details */
#include <errno.h>
#include <stdlib.h>
#include <ctype.h>
#include <unistd.h>
#include <fcntl.h>
#include <limits.h>
#define TOLOWER(c) (isascii(c) && isupper(c) ? tolower (c) : (c))
long
pathconf(const char *path, int name)
{
switch (name)
{
case _PC_LINK_MAX: return LINK_MAX;
case _PC_MAX_CANON: return MAX_CANON;
case _PC_MAX_INPUT: return MAX_INPUT;
case _PC_NAME_MAX: case _PC_PATH_MAX:
{
int name_max, path_max;
int e = errno;
char *lfnenv = getenv ("LFN");
if (!lfnenv || TOLOWER (*lfnenv) != 'n')
{
errno = 0;
_get_volume_info (path, &name_max, &path_max, 0);
if (!errno)
{
errno = e;
return (name == _PC_NAME_MAX) ? name_max : path_max;
}
}
return (name == _PC_NAME_MAX) ? NAME_MAX : PATH_MAX;
}
case _PC_PIPE_BUF: return PIPE_BUF;
case _PC_CHOWN_RESTRICTED: return _POSIX_CHOWN_RESTRICTED;
case _PC_NO_TRUNC: return _POSIX_NO_TRUNC;
case _PC_VDISABLE: return _POSIX_VDISABLE;
default:
errno = EINVAL;
return -1;
}
}
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