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selinux: access policycaps with READ_ONCE/WRITE_ONCE
Use READ_ONCE/WRITE_ONCE for all accesses to the selinux_state.policycaps booleans to prevent compiler mischief. Signed-off-by: Stephen Smalley <stephen.smalley.work@gmail.com> Signed-off-by: Paul Moore <paul@paul-moore.com>
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@ -164,49 +164,49 @@ static inline bool selinux_policycap_netpeer(void)
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{
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struct selinux_state *state = &selinux_state;
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return state->policycap[POLICYDB_CAPABILITY_NETPEER];
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return READ_ONCE(state->policycap[POLICYDB_CAPABILITY_NETPEER]);
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}
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static inline bool selinux_policycap_openperm(void)
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{
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struct selinux_state *state = &selinux_state;
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return state->policycap[POLICYDB_CAPABILITY_OPENPERM];
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return READ_ONCE(state->policycap[POLICYDB_CAPABILITY_OPENPERM]);
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}
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static inline bool selinux_policycap_extsockclass(void)
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{
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struct selinux_state *state = &selinux_state;
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return state->policycap[POLICYDB_CAPABILITY_EXTSOCKCLASS];
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return READ_ONCE(state->policycap[POLICYDB_CAPABILITY_EXTSOCKCLASS]);
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}
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static inline bool selinux_policycap_alwaysnetwork(void)
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{
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struct selinux_state *state = &selinux_state;
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return state->policycap[POLICYDB_CAPABILITY_ALWAYSNETWORK];
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return READ_ONCE(state->policycap[POLICYDB_CAPABILITY_ALWAYSNETWORK]);
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}
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static inline bool selinux_policycap_cgroupseclabel(void)
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{
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struct selinux_state *state = &selinux_state;
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return state->policycap[POLICYDB_CAPABILITY_CGROUPSECLABEL];
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return READ_ONCE(state->policycap[POLICYDB_CAPABILITY_CGROUPSECLABEL]);
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}
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static inline bool selinux_policycap_nnp_nosuid_transition(void)
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{
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struct selinux_state *state = &selinux_state;
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return state->policycap[POLICYDB_CAPABILITY_NNP_NOSUID_TRANSITION];
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return READ_ONCE(state->policycap[POLICYDB_CAPABILITY_NNP_NOSUID_TRANSITION]);
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}
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static inline bool selinux_policycap_genfs_seclabel_symlinks(void)
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{
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struct selinux_state *state = &selinux_state;
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return state->policycap[POLICYDB_CAPABILITY_GENFS_SECLABEL_SYMLINKS];
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return READ_ONCE(state->policycap[POLICYDB_CAPABILITY_GENFS_SECLABEL_SYMLINKS]);
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}
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int security_mls_enabled(struct selinux_state *state);
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@ -2123,7 +2123,8 @@ static void security_load_policycaps(struct selinux_state *state,
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p = &policy->policydb;
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for (i = 0; i < ARRAY_SIZE(state->policycap); i++)
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state->policycap[i] = ebitmap_get_bit(&p->policycaps, i);
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WRITE_ONCE(state->policycap[i],
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ebitmap_get_bit(&p->policycaps, i));
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for (i = 0; i < ARRAY_SIZE(selinux_policycap_names); i++)
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pr_info("SELinux: policy capability %s=%d\n",
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