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       Warning:  This  routine is obsolete.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)