MLOCKALL

Section: �� α׷�� Ŵ�� (2)
Updated: 1995�� 11�� 26��
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mlockall - ȣ�� μ�� ¡�� Ų��.

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#include <sys/mman.h>

int mlockall(int flags);

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mlockall�� ȣ�� μ�� ּ� �� Ǵ� �� ¡�� Ų��. ��⿡�� ڵ�, ��Ϳ� �� ̺귯��, �� Ŀ�� , �� ޸�, �޸𸮿� �� Եȴ�. �� mlockall�� RAM�� ϴ� �� ȴ�. �׸�� munlock�̳� munlockall�� ٽ� �� Ǯ�� Ǵ� ��μ�� Ǵ� exec�� ٸ� ��α׷�� ۵� �� RAM�� ϴ� �� ȴ�. fork�� ڽ� ��μ�� ӹ�� ʴ´�.

�޸� �� ַ� �� 쿡 ��ȴ�: �ǽð� �˰�� high-security ��Ÿ ó��. �ǽð� ��α׷�� Ÿ�ְ̹� ��ٸ� �� 䱸�Ǵµ�, �� ¡�� ġ �� α׷� �� ߱��ϴ� �ֿ� ��̴�. �� ǽð� ��α׷�� sched_setscheduler�� ǽð� ��췯�� Ѵ�. ��ȣ �� Ʈ�� ͷ� ��ȣ�� Ű �� ߿� ��Ʈ�� ó��Ѵ�. ��¡ ��, �� Ͱ� �� ġ�� Ǹ� �� Ʈ�� RAM�� ͸� �� Ŀ�� ܺο� �� ִ�. �� α׷�� ޸� �� ᰡ��ϰ�, �� mlock�� ̿��ϱ� ��ϴ�.

flags ��ڴ� �� OR�� Ͽ� �� ִ�.

MCL_CURRENT: ��μ�� ּ� �� Ǵ� �� ٴ�.
MCL_FUTURE: �� μ�� ּ� �� ٴ�. �� ο� �޸� �� ̳� �� ޸� �� Ӹ��ƴ϶� �þ �� Ǵ� �� ش�ȴ�.

�� MCL_FUTURE�� ǰ� �� Ѱ踦 �ʰ��ϸ� �ý�� ENOMEM �� ̴�. �� þ �� Ǹ�, Ŀ�� Ȯ�� ź��ϰ� SIGSEGV �ñ׳�� .

�ǽð� ��μ�� ð� �Ӱ� �� ϱ� �� ᰡ�ξ�, �� Լ� ȣ�⿡ �� ߻�� ʴ´�. �̴� �� ū �� , �� ū �迭�� ޸𸮿� ��⸦ �ϴ� �Լ�� ȣ��Ͽ�� ̷� �� ִ�. �̷� �� ÿ� �� RAM�� ᰡ�� ִ�. �� Ӱ� �� copy-on-write �� ߻�� ʰ� �Ѵ�.
�޸� �� ƴϴ�. ��, mlock�̳� mlockall�� ȣ��Ǿ� �� ϴ� �� munlock�̳� munlockall�� ѹ� ȣ��Ͽ� �� Ǯ �� ִ�. �� ġ�� μ��  �ϳ�� ġ�� μ�� ִ� �� RAM�� ȴ�.

mlockall�� munlockall�� ̿�� ִ� POSIX �ý��ۿ�� _POSIX_MEMLOCK�� <unistd.h>�� ǵǾ� �ִ�.

��ȯ��

��, mlockall�� 0�� Ѵ�. ��, -1 �� ϸ�, errno�� ȴ�.

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ENOMEM: ��μ�� Ǵ� �� ִ� �� ʰ��ߴ�.
EPERM: ȣ�� μ�� ùٸ� �� ʴ�. �� Ʈ ��μ�� ȴ�.
EINVAL: �߸�� flags�� Ǿ��.

ȣȯ

POSIX.1b, SVr4. SVr4�� EAGAIN �� ߰�� Ѵ�.

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munlockall(2), mlock(2), munlock(2)

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�� <hermes44@secsm.org>, 2000�� 5�� 26��

Index

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Time: 08:06:59 GMT, March 25, 2004

MLOCKALL

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