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24 .\" $FreeBSD: src/lib/libc/gen/ulimit.3,v 1.5 2003/01/04 01:11:49 tjr Exp $
25 .\" $DragonFly: src/lib/libc/gen/ulimit.3,v 1.2 2007/04/04 18:36:55 swildner Exp $
32 .Nd get and set process limits
38 .Fn ulimit "int cmd" "..."
42 function will get and set process limits.
43 Currently this is limited to the maximum file size.
46 argument is one of the following:
47 .Bl -tag -width ".Dv UL_GETFSIZE"
49 will return the maximum file size in units of 512 blocks of
52 will attempt to set the maximum file size of the current
53 process and its children with the second argument expressed as a long.
56 Upon successful completion,
58 returns the value requested;
59 otherwise the value \-1 is returned and the global variable
61 is set to indicate the error.
65 function will fail if:
68 The command specified was invalid.
70 The limit specified to
72 would have raised the maximum limit value,
73 and the caller is not the super-user.
85 function first appeared in
90 function provides limited precision for
91 setting and retrieving process limits.
92 If there is a need for greater precision than the
99 functions should be considered.