ULIMIT(S)                XENIX System V                 ULIMIT(S)



     Name
          ulimit - Gets and sets user limits.

     Syntax
          #include <sys/ulimit.h>

          long ulimit (cmd, newlimit)
          int cmd;
          long newlimit;

     Description
          This function provides for control over process limits.  The
          cmd values available are:

          UL_GFILLIM (1)
               Gets the process' file size limit.  The limit is in
               units of 512-byte blocks and is inherited by child
               processes.  Files of any size can be read.

          UL_SFILLIM (2)
               Sets the process' file size limit to the value of
               newlimit.  Any process may decrease this limit, but
               only a process with an effective user ID of super-user
               may increase the limit.  If a process with an effective
               user ID other than super-user attempts to increase its
               file size limit, ulimit will fail and the limit will be
               unchanged.  [EPERM]

          UL_GMEMLIM
               Gets the maximum possible break value.  If the process
               is a large model 80286 program, then the largest
               possible data size (in bytes) is returned.  See
               sbrk(S).

          UL_GTXTOFF
               Gets the number of bytes between the beginning of user
               text and the text address given by newlimit.  In this
               case, newlimit must have type

               int (*newlimit)();

     Return Value
          Upon successful completion, a nonnegative value is returned.
          Otherwise, a value of -1 is returned and errno is set to
          indicate the error. EINVAL indicates an invalid cmd value.

     See Also
          login(M), machine(HW), chsize(S), sbrk(S), write(S).

     Notes
          The file limit is only enforced on writes to regular files.
          Tapes, disks, and other devices of any size can be written.



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     ULIMIT(S)                XENIX System V                 ULIMIT(S)



          The file /etc/default/login contains the value of ULIMIT set
          at login time by the login program.  The super-user can set
          the maximum (increase or decrease) file size using this
          variable.  The value is in 512 byte blocks. The default
          value is 4096 blocks (2 megabytes).  Use even values for
          filesystems with 1024 byte blocks (see machine(HW)).

















































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