05-25-2005
sorry i don't understand file is locked. and i don't know what mac finder is. i gess it is something finding your mac address of ethernet? BUT,
1) if it is locked as in RCS (revision control system) or SCCS (source code control system) , you (hopefully owner) can unlock it " rcs -u YourFileName " see man rcs if it is installed in your system. see man sccs to learn how to unlock with sccs. unfortunately i don't know.
2) if your file is in use, you can see it with " fuser -m TheFileName or the directoryName holding it " fuser is file user. see man fuser to see how to kill the process using your file. i think it is fuser -km FileName. better investigate it yourself. If you know which process is using your file you can terminate the process with " kill " command.
3) use " lsattr YourFileName " to see the attributes of your file. it might be set as immutable or undeletable with command "chattr -i filename" or " chattr -u filename " if so you can do the opposite with " chattr +i +u filename " see man chattr or man lsattr for more detail. chattr and lsattr come with newer systems. my fedora2 has it. older systems don't
these were all i know. hope they are usefull.
regards
emil babayev
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plock(2) System Calls Manual plock(2)
NAME
plock - Locks a process' text and/or data segments in memory
SYNOPSIS
#include <sys/lock.h>
int plock( int opr) ;
PARAMETERS
Specifies one of the following operations: Locks the text and data segments into memory. Locks the text segment into memory. Locks the
data segment into memory. Removes locks.
DESCRIPTION
The plock() function locks or unlocks a process' text segments, data segments, or both in physical memory. When locked, the physical pages
containing the text or data segment will not be paged out. It is an error to lock a segment that is already locked.
The caller must have superuser privilege to use the plock() function.
Note that memory acquired subsequent to a plock() function may or may not be locked in memory, depending on the specific acquisition
method. Memory acquired using the brk() function (or the sbrk() function) is locked if the data segment was locked. Memory acquired via
the mmap() or vm_allocate() functions will not be locked.
RETURN VALUES
Upon successful completion, a value of 0 (zero) is returned to the calling process. Otherwise, a value of -1 is returned and errno is set
to indicate the error.
ERRORS
If the plock() function fails, errno may be set to one of the following values: The caller does not have appropriate privilege. There are
insufficient resources to perform the operation. The opr parameter is PROCLOCK, but the text segment or the data segment is already
locked. The opr parameter is TXTLOCK, but the text segment is already locked. The opr parameter is DATLOCK, but the data segment is
already locked. The opr parameter is UNLOCK, but neither the text segment nor the data segment is locked.
RELATED INFORMATION
Functions: brk(2), mmap(2) delim off
plock(2)