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NAME | LIBRARY | SYNOPSIS | DESCRIPTION | RETURN VALUE | ERRORS | ATTRIBUTES | STANDARDS | HISTORY | SEE ALSO | COLOPHON |
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ulimit(3) Library Functions Manual ulimit(3)
ulimit - get and set user limits
Standard C library (libc, -lc)
#include <ulimit.h>
[[deprecated]] 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Warning: this routine is obsolete.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 to indicate the error.
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 │
└─────────────────────────────────────┴───────────────┴─────────┘
POSIX.1-2008.
SVr4, POSIX.1-2001. POSIX.1-2008 marks it as obsolete.
bash(1), getrlimit(2), setrlimit(2), sysconf(3)
This page is part of the man-pages (Linux kernel and C library
user-space interface documentation) project. Information about
the project can be found at
⟨https://www.kernel.org/doc/man-pages/⟩. If you have a bug report
for this manual page, see
⟨https://git.kernel.org/pub/scm/docs/man-pages/man-pages.git/tree/CONTRIBUTING⟩.
This page was obtained from the tarball man-pages-6.9.1.tar.gz
fetched from
⟨https://mirrors.edge.kernel.org/pub/linux/docs/man-pages/⟩ on
2024-06-26. If you discover any rendering problems in this HTML
version of the page, or you believe there is a better or more up-
to-date source for the page, or you have corrections or
improvements to the information in this COLOPHON (which is not
part of the original manual page), send a mail to
[email protected]
Linux man-pages 6.9.1 2024-05-02 ulimit(3)
Pages that refer to this page: getrlimit(2), syscalls(2), unimplemented(2), lttng-relayd(8)
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HTML rendering created 2024-06-26 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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