ulimit - get and set user limits
long ulimit(int cmd, ...);
The ANSI C ", ..." construct denotes a variable length argument list
whose optional [or required] members are given in the associated
comment (/* */).
ulimit() provides for control over process limits. Available values
for cmd are:
UL_GETFSIZE Get the file size limit of the process. The
limit is in units of 512-byte blocks and is
inherited by child processes. Files of any
size can be read. The optional second
argument is not used.
UL_SETFSIZE Set the file size limit of the process to the
value of the optional second argument which
is taken as a long. Any process can decrease
this limit, but only a process with an
effective user ID of super-user can increase
the limit. Note that the limit must be
specified in units of 512-byte blocks.
UL_GETMAXBRK Get the maximum possible break value (see
brk(2)). Depending on system resources such
as swap space, this maximum might not be
attainable at a given time. The optional
second argument is not used.
ulimit() fails if one or more of the following conditions is true.
[EINVAL] cmd is not in the correct range.
[EPERM] ulimit() fails and the limit is unchanged if a
process with an effective user ID other than
super-user attempts to increase its file size
Upon successful completion, a non-negative value is returned. Errors
return a -1, with errno set to indicate the error.
Hewlett-Packard Company - 1 - HP-UX Release 11i: November 2000
ulimit(): AES, SVID2, SVID3, XPG2, XPG3, XPG4
Hewlett-Packard Company - 2 - HP-UX Release 11i: November 2000