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NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | ERRORS | ATTRIBUTES | CONFORMING TO | SEE ALSO | COLOPHON |
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Warning: this routine is obsolete.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 An unprivileged process tried to increase a limit.
For an explanation of the terms used in this section, see
attributes(7).
┌──────────┬───────────────┬─────────┐
│Interface │ Attribute │ Value │
├──────────┼───────────────┼─────────┤
│ulimit() │ Thread safety │ MT-Safe │
└──────────┴───────────────┴─────────┘
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 4.12 of the Linux man-pages project. A
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latest version of this page, can be found at
https://www.kernel.org/doc/man-pages/.
Linux 2015-03-29 ULIMIT(3)
Pages that refer to this page: getrlimit(2), syscalls(2), unimplemented(2), lttng-relayd(8)