minix/lib/libc/sys-minix/fpathconf.c
Lionel Sambuc 84d9c625bf Synchronize on NetBSD-CVS (2013/12/1 12:00:00 UTC)
- Fix for possible unset uid/gid in toproto
 - Fix for default mtree style
 - Update libelf
 - Importing libexecinfo
 - Resynchronize GCC, mpc, gmp, mpfr
 - build.sh: Replace params with show-params.
     This has been done as the make target has been renamed in the same
     way, while a new target named params has been added. This new
     target generates a file containing all the parameters, instead of
     printing it on the console.
 - Update test48 with new etc/services (Fix by Ben Gras <ben@minix3.org)
     get getservbyport() out of the inner loop

Change-Id: Ie6ad5226fa2621ff9f0dee8782ea48f9443d2091
2014-07-28 17:05:06 +02:00

62 lines
1.3 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>
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);
}
}