Cal. PEN § 2772

Any person who, without authority, interferes with or in any way interrupts the work of any prisoners employed pursuant to this article, and any person not authorized by law, who gives or attempts to give to any prisoner so employed any controlled substances or any intoxicating liquors of any kind whatever, or firearms, weapons or explosives of any kind, is guilty of a felony and upon conviction thereof shall be punished by imprisonment pursuant to subdivision (h) of Section 1170 and shall be disqualified from holding any state office or position in the employ of this state. Any person who interferes with the discipline or good conduct of any prisoner employed pursuant to this article, while that prisoner is in the confines or limits of the state prison road camp is guilty of a misdemeanor and upon conviction thereof shall be punished by imprisonment in the county jail for a term not more than six months, or by a fine of not more than two hundred dollars ($200), or by both that fine and imprisonment. Any peace officer or any officer or guard of any state prison or any superintendent of that road work, having in charge the prisoners employed upon such highways or state roads, may arrest without a warrant any person violating any provisions of this article.