ULIMIT(3)           Linux Programmer's Manual           ULIMIT(3)

NAME
       ulimit - get and set user limits

SYNOPSIS
       #include <ulimit.h>

       long ulimit(int cmd, long newlimit);

DESCRIPTION
       Warning:  This routine is obsolete. The include file is no
       longer provided by glibc.  Use getrlimit(2),  setrlimit(2)
       and sysconf(3) instead.  For the shell command ulimit, see
       bash(1).

       The ulimit call will get or set some limit for the current
       process.   The  cmd argument can have one of the following
       values.

       UL_GETFSIZE
              Return the limit on the size of a file, in units of
              512 bytes.

       UL_SETFSIZE
              Set the limit on the size of a file.

       3      (Not  implemented  for  Linux.)  Return the maximum
              possible address of the data segment.

       4      (Implemented but no  symbolic  constant  provided.)
              Return the maximum number of files that the calling
              process can open.

RETURN VALUE
       On success, ulimit returns a nonnegative value.  On error,
       -1 is returned, and errno is set appropriately.

ERRORS
       EPERM  A non-root process tried to increase a limit.

CONFORMING TO
       SVID.

SEE ALSO
       bash(1), getrlimit(2), setrlimit(2), sysconf(3)

Linux 2.0                  12 June 1998                         1