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   prlimit    ( 2 )

получить / установить ограничения ресурсов (get/set resource limits)

Примечание (Note)

A child process created via fork(2) inherits its parent's resource limits. Resource limits are preserved across execve(2).

Resource limits are per-process attributes that are shared by all of the threads in a process.

Lowering the soft limit for a resource below the process's current consumption of that resource will succeed (but will prevent the process from further increasing its consumption of the resource).

One can set the resource limits of the shell using the built-in ulimit command (limit in csh(1)). The shell's resource limits are inherited by the processes that it creates to execute commands.

Since Linux 2.6.24, the resource limits of any process can be inspected via /proc/[pid]/limits; see proc(5).

Ancient systems provided a vlimit() function with a similar purpose to setrlimit(). For backward compatibility, glibc also provides vlimit(). All new applications should be written using setrlimit().

C library/kernel ABI differences Since version 2.13, the glibc getrlimit() and setrlimit() wrapper functions no longer invoke the corresponding system calls, but instead employ prlimit(), for the reasons described in BUGS.

The name of the glibc wrapper function is prlimit(); the underlying system call is prlimit64().