RAppArmor (version 1.0.0)

rlimit_as: Limit virtual memory

Description

Limits the maximum size of the process's virtual memory (address space) in bytes.

Usage

rlimit_as(hardlim, softlim = hardlim, pid = 0,
    verbose = FALSE)

Arguments

softlim

soft limit in bytes.

hardlim

hard limit in bytes

pid

id of the target process.

verbose

print some C output (TRUE/FALSE)

Details

The maximum size of the process's virtual memory (address space) in bytes. This limit affects calls to brk(2), mmap(2) and mremap(2), which fail with the error ENOMEM upon exceeding this limit. Also automatic stack expansion will fail (and generate a SIGSEGV that kills the process if no alternate stack has been made available via sigaltstack(2)). Since the value is a long, on machines with a 32-bit long either this limit is at most 2 GiB, or this resource is unlimited.

References

Jeroen Ooms (2013). The RAppArmor Package: Enforcing Security Policies in {R} Using Dynamic Sandboxing on Linux. Journal of Statistical Software, 55(7), 1-34. http://www.jstatsoft.org/v55/i07/.

Ubuntu Manpage: getrlimit, setrlimit - get/set resource limits. http://manpages.ubuntu.com/manpages/precise/man2/getrlimit.2.html.

See Also

Other rlimit: rlimit_core, rlimit_cpu, rlimit_data, rlimit_fsize, rlimit_memlock, rlimit_msgqueue, rlimit_nice, rlimit_nofile, rlimit_nproc, rlimit_rtprio, rlimit_rttime, rlimit_sigpending, rlimit_stack

Examples

#load lib
library(RAppArmor)

#current limit
rlimit_as();

#set hard limit
rlimit_as(1e9);

#set separate hard and soft limit. 
rlimit_as(1e9, 1e8);

#soft limits can be elevated
rlimit_as(soft = 1e7);
rlimit_as(soft = 1e9);

#set other limits
rlimit_core(1e9);
rlimit_data(1e9);
rlimit_fsize(1e9);
rlimit_memlock(10000);
rlimit_msgqueue(1e5);
rlimit_nofile(10);
rlimit_nproc(100);
rlimit_rttime(1e9);
rlimit_sigpending(1e4);
rlimit_stack(1000);
rlimit_cpu(60);