ipc — format of ipc component configuration
General syntax rules of Kernun Firewall configuration files are described in configuration(7). This man page describes types, sections and items specific for the ipc component configuration.
Repeatable sections/items are marked by
the '*' before section/item name.
Configuration directives have attributes of several value-types. For the basic types description, see configuration(7).
Enumeration is a list of words (names) representing integer values. Some enumerations accept both names and direct integer values; in this case, enumeration description contains values for every name (in parenthesis next to name). For other enumerations, using of names is obligatory.
The following enumerations are used in ipc configuration directives:
lock-type (name-usage obligatory)Type of an alternative lock.
noneNo locking done.
semaphoreLock implemented by a SysV semaphore.
lock2Two levels of locks with a single lock file.
multilock2Two levels of locks with multiple lock files.
Configuration of ipc library component consists of following prototypes:
lock ... ;
alt-lock ... ;
lock [path];Lock file used as a lock.
path (type: str, optional, default: <NULL>)If set to directory, file in that directory is created with name PREFIX.PID.XXXXXX, where PREFIX is a string defined by the proxy, PID is the proxy parent process ID and X is a random suffix. If not set, directory /tmp is assumed. Automatic generation of lock file name is strongly recommended, because each lock must have a unique name.
alt-lock none;alt-lock semaphore;alt-lock lock2 [path];alt-lock [multilock2] [path];An alternative implemetation of locks.
lock-type, optional, default: multilock2)path (type: str, optional, default: <NULL>)If set to directory, file in that directory is created with name PREFIX.PID.XXXXXX, where PREFIX is a string defined by the proxy, PID is the proxy parent process ID and X is a random suffix. If not set, directory /tmp is assumed. Automatic generation of lock file name is strongly recommended, because each lock must have a unique name.