What is the current state of the law on solitary confinement in a maximum security prison?

Conditions of confinement may, however, be harsh and restrictive. See Rhodes v. Chapman, 452 U.S. 337, 347 (1981). Nonetheless, prison officials must provide prisoners with "food, clothing, shelter, sanitation, medical care, and personal safety." Toussaint v. McCarthy, 801 F.2d 1080, 1107 (9th Cir. 1986).