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       Warning:  This  routine  is obsolete.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)