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Command: ulimit | Section: 3 | Source: FreeBSD | File: ulimit.3.gz
ULIMIT(3) FreeBSD Library Functions Manual ULIMIT(3)
NAME
ulimit - get and set process limits
LIBRARY
Standard C Library (libc, -lc)
SYNOPSIS
#include <ulimit.h>
long
ulimit(int cmd, ...);
DESCRIPTION
The ulimit() function will get and set process limits. Currently this is
limited to the maximum file size. The 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:
[EINVAL] The command specified was invalid.
[EPERM] The limit specified to ulimit() would have raised the
maximum limit value, and the caller is not the super-
user.
SEE ALSO
getrlimit(2)
STANDARDS
The ulimit() function conforms to IEEE Std 1003.1-2001 ("POSIX.1").
HISTORY
The ulimit() function first appeared in FreeBSD 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 long provides, the getrlimit(2) and setrlimit(2) functions
should be considered.
FreeBSD 14.1-RELEASE-p8 January 4, 2003 FreeBSD 14.1-RELEASE-p8