NAME
ulimit —
get and set process limits
LIBRARY
library “libc”
SYNOPSIS
#include
<ulimit.h>
long
ulimit(int
cmd, ...);
DESCRIPTION
Theulimit()
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
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.