Docs » Autodocs » dos.library » Lock
Lock -- Lock a directory or file
lock = Lock( name, accessMode )
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BPTR Lock(STRPTR, LONG)
A filing system lock on the file or directory 'name' is returned if
possible.
If the accessMode is ACCESS_READ, the lock is a shared read lock;
if the accessMode is ACCESS_WRITE then it is an exclusive write
lock. Do not use random values for mode.
If Lock() fails (that is, if it cannot obtain a filing system lock
on the file or directory) it returns a zero.
Tricky assumptions about the internal format of a lock are unwise,
as are any attempts to use the fl_Link or fl_Access fields.
name - pointer to a null-terminated string
accessMode - integer
lock - BCPL pointer to a lock
UnLock(), DupLock(), ChangeMode(), NameFromLock(), DupLockFromFH()
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