| NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | ERRORS | CONFORMING TO | SEE ALSO | COLOPHON | The Linux Programming Interface |
ULIMIT(3) Linux Programmer's Manual ULIMIT(3)
ulimit - get and set user limits
#include <ulimit.h>
long ulimit(int cmd, long newlimit);
Warning: This routine is obsolete. Use getrlimit(2), setrlimit(2), and
sysconf(3) instead. For the shell command ulimit(), see bash(1).
The ulimit() call will get or set some limit for the calling process. The cmd
argument can have one of the following values.
UL_GETFSIZE
Return the limit on the size of a file, in units of 512 bytes.
UL_SETFSIZE
Set the limit on the size of a file.
3 (Not implemented for Linux.) Return the maximum possible address of
the data segment.
4 (Implemented but no symbolic constant provided.) Return the maximum
number of files that the calling process can open.
On success, ulimit() returns a nonnegative value. On error, -1 is returned,
and errno is set appropriately.
EPERM A unprivileged process tried to increase a limit.
SVr4, POSIX.1-2001. POSIX.1-2008 marks ulimit() as obsolete.
bash(1), getrlimit(2), setrlimit(2), sysconf(3)
This page is part of release 3.32 of the Linux man-pages project. A
description of the project, and information about reporting bugs, can be found
at http://www.kernel.org/doc/man-pages/.
Linux 2008-08-06 ULIMIT(3)
HTML rendering created 2010-12-03 by Michael Kerrisk, author of The Linux Programming Interface