From 2a862b32f3da5a2120043921ad301322ad526084 Mon Sep 17 00:00:00 2001 From: "Ahmed S. Darwish" Date: Sat, 1 Mar 2008 21:54:38 +0200 Subject: Audit: use new LSM hooks instead of SELinux exports Stop using the following exported SELinux interfaces: selinux_get_inode_sid(inode, sid) selinux_get_ipc_sid(ipcp, sid) selinux_get_task_sid(tsk, sid) selinux_sid_to_string(sid, ctx, len) kfree(ctx) and use following generic LSM equivalents respectively: security_inode_getsecid(inode, secid) security_ipc_getsecid*(ipcp, secid) security_task_getsecid(tsk, secid) security_sid_to_secctx(sid, ctx, len) security_release_secctx(ctx, len) Call security_release_secctx only if security_secid_to_secctx succeeded. Signed-off-by: Casey Schaufler Signed-off-by: Ahmed S. Darwish Acked-by: James Morris Reviewed-by: Paul Moore --- kernel/auditsc.c | 55 +++++++++++++++++++++++++++++-------------------------- 1 file changed, 29 insertions(+), 26 deletions(-) (limited to 'kernel/auditsc.c') diff --git a/kernel/auditsc.c b/kernel/auditsc.c index 782262e4107..6a83c706b50 100644 --- a/kernel/auditsc.c +++ b/kernel/auditsc.c @@ -530,7 +530,7 @@ static int audit_filter_rules(struct task_struct *tsk, logged upon error */ if (f->se_rule) { if (need_sid) { - selinux_get_task_sid(tsk, &sid); + security_task_getsecid(tsk, &sid); need_sid = 0; } result = selinux_audit_rule_match(sid, f->type, @@ -885,11 +885,11 @@ void audit_log_task_context(struct audit_buffer *ab) int error; u32 sid; - selinux_get_task_sid(current, &sid); + security_task_getsecid(current, &sid); if (!sid) return; - error = selinux_sid_to_string(sid, &ctx, &len); + error = security_secid_to_secctx(sid, &ctx, &len); if (error) { if (error != -EINVAL) goto error_path; @@ -897,7 +897,7 @@ void audit_log_task_context(struct audit_buffer *ab) } audit_log_format(ab, " subj=%s", ctx); - kfree(ctx); + security_release_secctx(ctx, len); return; error_path: @@ -941,7 +941,7 @@ static int audit_log_pid_context(struct audit_context *context, pid_t pid, u32 sid, char *comm) { struct audit_buffer *ab; - char *s = NULL; + char *ctx = NULL; u32 len; int rc = 0; @@ -951,15 +951,16 @@ static int audit_log_pid_context(struct audit_context *context, pid_t pid, audit_log_format(ab, "opid=%d oauid=%d ouid=%d oses=%d", pid, auid, uid, sessionid); - if (selinux_sid_to_string(sid, &s, &len)) { + if (security_secid_to_secctx(sid, &ctx, &len)) { audit_log_format(ab, " obj=(none)"); rc = 1; - } else - audit_log_format(ab, " obj=%s", s); + } else { + audit_log_format(ab, " obj=%s", ctx); + security_release_secctx(ctx, len); + } audit_log_format(ab, " ocomm="); audit_log_untrustedstring(ab, comm); audit_log_end(ab); - kfree(s); return rc; } @@ -1271,14 +1272,15 @@ static void audit_log_exit(struct audit_context *context, struct task_struct *ts if (axi->osid != 0) { char *ctx = NULL; u32 len; - if (selinux_sid_to_string( + if (security_secid_to_secctx( axi->osid, &ctx, &len)) { audit_log_format(ab, " osid=%u", axi->osid); call_panic = 1; - } else + } else { audit_log_format(ab, " obj=%s", ctx); - kfree(ctx); + security_release_secctx(ctx, len); + } } break; } @@ -1392,13 +1394,14 @@ static void audit_log_exit(struct audit_context *context, struct task_struct *ts if (n->osid != 0) { char *ctx = NULL; u32 len; - if (selinux_sid_to_string( + if (security_secid_to_secctx( n->osid, &ctx, &len)) { audit_log_format(ab, " osid=%u", n->osid); call_panic = 2; - } else + } else { audit_log_format(ab, " obj=%s", ctx); - kfree(ctx); + security_release_secctx(ctx, len); + } } audit_log_end(ab); @@ -1775,7 +1778,7 @@ static void audit_copy_inode(struct audit_names *name, const struct inode *inode name->uid = inode->i_uid; name->gid = inode->i_gid; name->rdev = inode->i_rdev; - selinux_get_inode_sid(inode, &name->osid); + security_inode_getsecid(inode, &name->osid); } /** @@ -2190,8 +2193,7 @@ int __audit_ipc_obj(struct kern_ipc_perm *ipcp) ax->uid = ipcp->uid; ax->gid = ipcp->gid; ax->mode = ipcp->mode; - selinux_get_ipc_sid(ipcp, &ax->osid); - + security_ipc_getsecid(ipcp, &ax->osid); ax->d.type = AUDIT_IPC; ax->d.next = context->aux; context->aux = (void *)ax; @@ -2343,7 +2345,7 @@ void __audit_ptrace(struct task_struct *t) context->target_auid = audit_get_loginuid(t); context->target_uid = t->uid; context->target_sessionid = audit_get_sessionid(t); - selinux_get_task_sid(t, &context->target_sid); + security_task_getsecid(t, &context->target_sid); memcpy(context->target_comm, t->comm, TASK_COMM_LEN); } @@ -2371,7 +2373,7 @@ int __audit_signal_info(int sig, struct task_struct *t) audit_sig_uid = tsk->loginuid; else audit_sig_uid = tsk->uid; - selinux_get_task_sid(tsk, &audit_sig_sid); + security_task_getsecid(tsk, &audit_sig_sid); } if (!audit_signals || audit_dummy_context()) return 0; @@ -2384,7 +2386,7 @@ int __audit_signal_info(int sig, struct task_struct *t) ctx->target_auid = audit_get_loginuid(t); ctx->target_uid = t->uid; ctx->target_sessionid = audit_get_sessionid(t); - selinux_get_task_sid(t, &ctx->target_sid); + security_task_getsecid(t, &ctx->target_sid); memcpy(ctx->target_comm, t->comm, TASK_COMM_LEN); return 0; } @@ -2405,7 +2407,7 @@ int __audit_signal_info(int sig, struct task_struct *t) axp->target_auid[axp->pid_count] = audit_get_loginuid(t); axp->target_uid[axp->pid_count] = t->uid; axp->target_sessionid[axp->pid_count] = audit_get_sessionid(t); - selinux_get_task_sid(t, &axp->target_sid[axp->pid_count]); + security_task_getsecid(t, &axp->target_sid[axp->pid_count]); memcpy(axp->target_comm[axp->pid_count], t->comm, TASK_COMM_LEN); axp->pid_count++; @@ -2435,16 +2437,17 @@ void audit_core_dumps(long signr) ab = audit_log_start(NULL, GFP_KERNEL, AUDIT_ANOM_ABEND); audit_log_format(ab, "auid=%u uid=%u gid=%u ses=%u", auid, current->uid, current->gid, sessionid); - selinux_get_task_sid(current, &sid); + security_task_getsecid(current, &sid); if (sid) { char *ctx = NULL; u32 len; - if (selinux_sid_to_string(sid, &ctx, &len)) + if (security_secid_to_secctx(sid, &ctx, &len)) audit_log_format(ab, " ssid=%u", sid); - else + else { audit_log_format(ab, " subj=%s", ctx); - kfree(ctx); + security_release_secctx(ctx, len); + } } audit_log_format(ab, " pid=%d comm=", current->pid); audit_log_untrustedstring(ab, current->comm); -- cgit v1.2.3-18-g5258