minix/lib/nbsd_libc/sys-minix/fpathconf.c
Gianluca Guida 4f294c247f Add NBSDLibc Minix specific files.
This patch mainly copies and modifies files existing in
the current libc implementing minix specific functions.

To keep consisten with the NetBSD libc, we remove 
namespace stubs and we use "namespace.h" and weak
links.
2011-02-17 17:11:09 +00:00

66 lines
1.4 KiB
C

/* POSIX fpathconf (Sec. 5.7.1) Author: Andy Tanenbaum */
#include <sys/cdefs.h>
#include "namespace.h"
#include <lib.h>
#include <sys/stat.h>
#include <errno.h>
#include <limits.h>
#include <unistd.h>
#include <termios.h>
#ifdef __weak_alias
__weak_alias(fpathconf, _fpathconf)
#endif
PUBLIC long fpathconf(fd, name)
int fd; /* file descriptor being interrogated */
int name; /* property being inspected */
{
/* POSIX allows some of the values in <limits.h> to be increased at
* run time. The pathconf and fpathconf functions allow these values
* to be checked at run time. MINIX does not use this facility.
* The run-time limits are those given in <limits.h>.
*/
struct stat stbuf;
switch(name) {
case _PC_LINK_MAX:
/* Fstat the file. If that fails, return -1. */
if (fstat(fd, &stbuf) != 0) return(-1);
if (S_ISDIR(stbuf.st_mode))
return(1L); /* no links to directories */
else
return( (long) LINK_MAX);
case _PC_MAX_CANON:
return( (long) MAX_CANON);
case _PC_MAX_INPUT:
return( (long) MAX_INPUT);
case _PC_NAME_MAX:
return( (long) NAME_MAX);
case _PC_PATH_MAX:
return( (long) PATH_MAX);
case _PC_PIPE_BUF:
return( (long) PIPE_BUF);
case _PC_CHOWN_RESTRICTED:
return( (long) _POSIX_CHOWN_RESTRICTED);
case _PC_NO_TRUNC:
return( (long) _POSIX_NO_TRUNC);
case _PC_VDISABLE:
return( (long) _POSIX_VDISABLE);
default:
errno = EINVAL;
return(-1);
}
}