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08ae2487b2
The "file_pattern" keyword was used for automatically recording patternized pathnames when using the learning mode. This keyword was removed in TOMOYO 2.4 because it is impossible to predefine all possible pathname patterns. However, since the numeric part of proc:/$PID/ , pipe:[$INO] and socket:[$INO] has no meaning except $PID == 1, automatically replacing the numeric part with \$ pattern helps reducing frequency of restarting the learning mode due to hitting the quota. Since replacing one digit with \$ pattern requires enlarging string buffer, and several programs access only $PID == 1, replace only two or more digits with \$ pattern. Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>