ulimit (3)
Leading comments
Copyright (C) 1996 Andries Brouwer (aeb@cwi.nl) %%%LICENSE_START(VERBATIM) Permission is granted to make and distribute verbatim copies of this manual provided the copyright notice and this permission notice are preserved on all copies. Permission is granted to copy and distribute modified versions of this manual under the conditions for verbatim copying, provided that the entire resulting derived work is distributed under the terms of a permission notice identical to this one. Since the L...
NAME
ulimit - get and set user limitsSYNOPSIS
#include <ulimit.h>long ulimit(int cmd, long newlimit);
DESCRIPTION
Warning: This routine is obsolete.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.
RETURN VALUE
On success, ulimit() returns a nonnegative value. On error, -1 is returned, and errno is set appropriately.ERRORS
- EPERM
- A unprivileged process tried to increase a limit.
ATTRIBUTES
For an explanation of the terms used in this section, see attributes(7).| Interface | Attribute | Value |
| ulimit() | Thread safety | MT-Safe |