The
ulimit ();
function will get and set process limits.
Currently this is limited to the maximum file size.
The
Fa cmd
argument is one of the following:
UL_GETFSIZE
will return the maximum file size in units of 512 blocks of
the current process.
UL_SETFSIZE
will attempt to set the maximum file size of the current
process and its children with the second argument expressed as a long.
RETURN VALUES
Upon successful completion,
ulimit ();
returns the value requested;
otherwise the value -1 is returned and the global variable
errno
is set to indicate the error.
ERRORS
The
ulimit ();
function will fail if:
Bq Er EINVAL
The command specified was invalid.
Bq Er EPERM
The limit specified to
ulimit ();
would have raised the maximum limit value,
and the caller is not the super-user.
The
ulimit ();
function conforms to
St -p1003.1-2001 .
HISTORY
The
ulimit ();
function first appeared in
Fx 5.0 .
BUGS
The
ulimit ();
function provides limited precision for
setting and retrieving process limits.
If there is a need for greater precision than the
type
Vt long
provides, the
getrlimit(2)
and
setrlimit(2)
functions should be considered.
