Reading CLI input for script Post: 302580206

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plock

plock(3C)                                                  Standard C Library Functions                                                  plock(3C)

NAME

       plock - lock or unlock into memory process, text, or data

SYNOPSIS

       #include <sys/lock.h>

       int plock(int op);

DESCRIPTION

       The  plock()  function allows the calling process to lock or unlock into memory its text segment (text lock), its data segment (data lock),
       or both its text and data segments (process lock). Locked segments are immune to all routine swapping. The effective user ID of the calling
       process must be super-user to use this call.

       The plock() function performs the function specified by op:

       PROCLOCK        Lock text and data segments into memory (process lock).

       TXTLOCK         Lock text segment into memory (text lock).

       DATLOCK         Lock data segment into memory (data lock).

       UNLOCK          Remove locks.

RETURN VALUES

       Upon successful completion, 0 is returned. Otherwise, -1 is returned and errno is set to indicate the error.

ERRORS

       The plock() function fails and does not perform the requested operation if:

       EAGAIN   Not enough memory.

       EINVAL   The op argument is equal to PROCLOCK and a process lock, a text lock, or a data lock already exists on the calling process; the op
                argument is equal to TXTLOCK and a text lock or a process lock already exists on the calling process; the op argument is equal  to
                DATLOCK and a data lock or a process lock already exists on the calling process; or the op argument is equal to UNLOCK and no lock
                exists on the calling process.

       EPERM    The {PRIV_PROC_LOCK_MEMORY} privilege is not asserted in the effective set of the calling process.

USAGE

       The mlock(3C) and mlockall(3C) functions are the preferred interfaces for process locking.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE         |      ATTRIBUTE VALUE        |
       +-----------------------------+-----------------------------+
       |MT-Level                     |MT-Safe                      |
       +-----------------------------+-----------------------------+

SEE ALSO

       exec(2), exit(2), fork(2), memcntl(2), mlock(3C), mlockall(3C), attributes(5)

SunOS 5.10                                                          22 Mar 2004                                                          plock(3C)

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