23 static int nerrs = 0;
29 	memset(&sa, 0, sizeof(sa));  in sethandler()
33 	if (sigaction(sig, &sa, 0))  in sethandler()
41 	memset(&sa, 0, sizeof(sa));  in clearhandler()
44 	if (sigaction(sig, &sa, 0))  in clearhandler()
58 	if (sigsetjmp(jmpbuf, 1) != 0) {  in try_outb()
62 			      : : [port] "Nd" (port), "a" (0));  in try_outb()
71 		printf("[FAIL]\toutb to 0x%02hx failed\n", port);  in expect_ok()
75 	printf("[OK]\toutb to 0x%02hx worked\n", port);  in expect_ok()
81 		printf("[FAIL]\toutb to 0x%02hx worked\n", port);  in expect_gp()
85 	printf("[OK]\toutb to 0x%02hx failed\n", port);  in expect_gp()
92 	CPU_SET(0, &cpuset);  in main()
93 	if (sched_setaffinity(0, sizeof(cpuset), &cpuset) != 0)  in main()
94 		err(1, "sched_setaffinity to CPU 0");  in main()
96 	expect_gp(0x80);  in main()
97 	expect_gp(0xed);  in main()
103 	printf("[RUN]\tenable 0x80\n");  in main()
104 	if (ioperm(0x80, 1, 1) != 0) {  in main()
105 		printf("[OK]\tioperm(0x80, 1, 1) failed (%d) -- try running as root\n",  in main()
107 		return 0;  in main()
109 	expect_ok(0x80);  in main()
110 	expect_gp(0xed);  in main()
112 	printf("[RUN]\tdisable 0x80\n");  in main()
113 	if (ioperm(0x80, 1, 0) != 0) {  in main()
114 		printf("[FAIL]\tioperm(0x80, 1, 0) failed (%d)", errno);  in main()
117 	expect_gp(0x80);  in main()
118 	expect_gp(0xed);  in main()
121 	if (ioperm(0x80, 1, 1) != 0) {  in main()
122 		printf("[FAIL]\tioperm(0x80, 1, 0) failed (%d)", errno);  in main()
130 	if (child == 0) {  in main()
132 		expect_ok(0x80);  in main()
133 		expect_gp(0xed);  in main()
134 		printf("[RUN]\tchild: Extend permissions to 0x81\n");  in main()
135 		if (ioperm(0x81, 1, 1) != 0) {  in main()
136 			printf("[FAIL]\tioperm(0x81, 1, 1) failed (%d)", errno);  in main()
139 		printf("[RUN]\tchild: Drop permissions to 0x80\n");  in main()
140 		if (ioperm(0x80, 1, 0) != 0) {  in main()
141 			printf("[FAIL]\tioperm(0x80, 1, 0) failed (%d)", errno);  in main()
144 		expect_gp(0x80);  in main()
145 		return 0;  in main()
148 		if (waitpid(child, &status, 0) != child ||  in main()
152 		} else if (WEXITSTATUS(status) != 0) {  in main()
160 	/* Verify that the child dropping 0x80 did not affect the parent */  in main()
162 	expect_ok(0x80);  in main()
166 	if (setresuid(1, 1, 1) != 0) {  in main()
168 		return 0;  in main()
171 	printf("[RUN]\tdisable 0x80\n");  in main()
172 	if (ioperm(0x80, 1, 0) != 0) {  in main()
173 		printf("[FAIL]\tioperm(0x80, 1, 0) failed (%d)", errno);  in main()
178 	printf("[RUN]\tenable 0x80 again\n");  in main()
179 	if (ioperm(0x80, 1, 1) == 0) {  in main()
184 	return 0;  in main()