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       Warning:  This  routine  is  obsolete.   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 calling 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 unprivileged process tried to increase a limit.

CONFORMING TO
       SVr4, POSIX.1-2001.  POSIX.1-2008 marks ulimit() as obsolete.

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

COLOPHON
       This page is part of release 3.25 of the Linux man-pages project.  A description of the project,  and  information  about
       reporting bugs, can be found at http://www.kernel.org/doc/man-pages/.



Linux                                                      2008-08-06                                                  ULIMIT(3)