NAME | SYNOPSIS | DESCRIPTION | RETURN VALUES | ERRORS | SUMMARY OF TRUSTED SOLARIS CHANGES | USAGE | SEE ALSO
#include <sys/lock.h>int plock(int op);
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 calling process must
have the PRIV_SYS_CONFIG
privilege
to succeed.
The plock() function performs the function specified by op:
Lock text and data segments into memory (process lock).
Lock text segment into memory (text lock).
Lock data segment into memory (data lock).
Remove locks.
The plock() function fails and does not perform the requested operation if:
Not enough memory.
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.
The process does not have sufficient privilege.
To succeed, plock() must have PRIV_SYS_CONFIG
in its set of effective privileges.
The mlock(3C) and mlockall(3C) functions are the preferred interfaces for process locking.
NAME | SYNOPSIS | DESCRIPTION | RETURN VALUES | ERRORS | SUMMARY OF TRUSTED SOLARIS CHANGES | USAGE | SEE ALSO