test/test5.c

   1 /* test 5 */
   2
   3 #include <sys/types.h>
   4 #include <sys/wait.h>
   5 #include <errno.h>
   6 #include <fcntl.h>
   7 #include <signal.h>
   8 #include <stdlib.h>
   9 #include <unistd.h>
  10 #include <stdio.h>
  11 #include <string.h>
  12
  13 #define ITERATIONS 2
  14 #define MAX_ERROR 3
  15
  16 int subtest;
  17 int zero[1024];
  18 int sigmap[5] = {9, 10, 11};
  19
  20 #include "common.c"
  21
  22 int main(int argc, char *argv[]);
  23 void test5a(void);
  24 void parent(int childpid);
  25 void child(int parpid);
  26 void func1(int s);
  27 void func8(int s);
  28 void func10(int s);
  29 void func11(int s);
  30 void test5b(void);
  31 void test5c(void);
  32 void test5d(void);
  33 void test5e(void);
  34 void test5f(void);
  35 void test5g(void);
  36 void funcalrm(int s);
  37 void test5h(void);
  38 void test5i(void);
  39 void ex(void);
  40
  41 volatile int childsigs, parsigs, alarms;
  42
  43 int main(argc, argv)
  44 int argc;
  45 char *argv[];
  46 {
  47   int i, m = 0x7777;
  48
  49   start(5);
  50
  51   for (i = 0; i < ITERATIONS; i++) {
  52         if (m & 0001) test5a();
  53         if (m & 0002) test5b();
  54         if (m & 0004) test5c();
  55         if (m & 0010) test5d();
  56         if (m & 0020) test5e();
  57         if (m & 0040) test5f();
  58         if (m & 0100) test5g();
  59         if (m & 0200) test5h();
  60         if (m & 0400) test5i();
  61   }
  62   quit();
  63   return(-1);                   /* impossible */
  64 }
  65
  66 void test5a()
  67 {
  68   int parpid, childpid, flag, *zp;
  69
  70   subtest = 0;
  71   flag = 0;
  72   for (zp = &zero[0]; zp < &zero[1024]; zp++)
  73         if (*zp != 0) flag = 1;
  74   if (flag) e(0);               /* check if bss is cleared to 0 */
  75   if (signal(1, func1) ==  SIG_ERR) e(1);
  76   if (signal(10, func10) == SIG_ERR) e(2);
  77   parpid = getpid();
  78   if ((childpid = fork()) != 0) {
  79         if (childpid < 0) ex();
  80         parent(childpid);
  81   } else {
  82         child(parpid);
  83   }
  84   if (signal(1, SIG_DFL) == SIG_ERR) e(4);
  85   if (signal(10, SIG_DFL) == SIG_ERR) e(5);
  86 }
  87
  88 void parent(childpid)
  89 int childpid;
  90 {
  91   int i, pid;
  92
  93   for (i = 0; i < 3; i++) {
  94         if (kill(childpid, 1) < 0) e(6);
  95         while (parsigs == 0);
  96         parsigs--;
  97   }
  98   if ( (pid = wait(&i)) < 0) e(7);
  99   if (i != 256 * 6) e(8);
 100 }
 101
 102 void child(parpid)
 103 int parpid;
 104 {
 105
 106   int i;
 107
 108   for (i = 0; i < 3; i++) {
 109         while (childsigs == 0);
 110         childsigs--;
 111         if (kill(parpid, 10) < 0) e(9);
 112   }
 113   exit(6);
 114 }
 115
 116 void func1(s)
 117 int s;                          /* for ANSI */
 118 {
 119   if (signal(1, func1) == SIG_ERR) e(10);
 120   childsigs++;
 121 }
 122
 123 void func8(s)
 124 int s;
 125 {
 126 }
 127
 128 void func10(s)
 129 int s;                          /* for ANSI */
 130 {
 131   if (signal(10, func10) == SIG_ERR) e(11);
 132   parsigs++;
 133 }
 134
 135 void func11(s)
 136 int s;                          /* for ANSI */
 137 {
 138   e(38);
 139 }
 140
 141 void test5b()
 142 {
 143   int cpid, n, pid;
 144
 145   subtest = 1;
 146   if ((pid = fork()) != 0) {
 147         if (pid < 0) ex();
 148         if ((pid = fork()) != 0) {
 149                 if (pid < 0) ex();
 150                 if ((cpid = fork()) != 0) {
 151                         if (cpid < 0) ex();
 152                         if (kill(cpid, 9) < 0) e(12);
 153                         if (wait(&n) < 0) e(13);
 154                         if (wait(&n) < 0) e(14);
 155                         if (wait(&n) < 0) e(15);
 156                 } else {
 157                         pause();
 158                         while (1);
 159                 }
 160         } else {
 161                 exit(0);
 162         }
 163   } else {
 164         exit(0);
 165   }
 166 }
 167
 168 void test5c()
 169 {
 170   int n, i, pid, wpid;
 171
 172   /* Test exit status codes for processes killed by signals. */
 173   subtest = 3;
 174   for (i = 0; i < 2; i++) {
 175         if ((pid = fork()) != 0) {
 176                 if (pid < 0) ex();
 177                 sleep(2);       /* wait for child to pause */
 178                 if (kill(pid, sigmap[i]) < 0) {
 179                         e(20);
 180                         exit(1);
 181                 }
 182                 if ((wpid = wait(&n)) < 0) e(21);
 183                 if ((n & 077) != sigmap[i]) e(22);
 184                 if (pid != wpid) e(23);
 185         } else {
 186                 pause();
 187                 exit(0);
 188         }
 189   }
 190 }
 191
 192 void test5d()
 193 {
 194 /* Test alarm */
 195
 196   int i;
 197
 198   subtest = 4;
 199   alarms = 0;
 200   for (i = 0; i < 8; i++) {
 201         signal(SIGALRM, funcalrm);
 202         alarm(1);
 203         pause();
 204         if (alarms != i + 1) e(24);
 205   }
 206 }
 207
 208 void test5e()
 209 {
 210 /* When a signal knocks a processes out of WAIT or PAUSE, it is supposed to
 211  * get EINTR as error status.  Check that.
 212  */
 213   int n, j;
 214
 215   subtest = 5;
 216   if (signal(8, func8) == SIG_ERR) e(25);
 217   if ((n = fork()) != 0) {
 218         /* Parent must delay to give child a chance to pause. */
 219         if (n < 0) ex();
 220         sleep(1);
 221         if (kill(n, 8) < 0) e(26);
 222         if (wait(&n) < 0) e(27);
 223         if (signal(8, SIG_DFL) == SIG_ERR) e(28);
 224   } else {
 225         j = pause();
 226         if (errno != EINTR && -errno != EINTR) e(29);
 227         exit(0);
 228   }
 229 }
 230
 231 void test5f()
 232 {
 233   int i, j, k, n;
 234
 235   subtest = 6;
 236   if (getuid() != 0) return;
 237   n = fork();
 238   if (n < 0) ex();
 239   if (n) {
 240         wait(&i);
 241         i = (i >> 8) & 0377;
 242         if (i != (n & 0377)) e(30);
 243   } else {
 244         i = getgid();
 245         j = getegid();
 246         k = (i + j + 7) & 0377;
 247         if (setgid(k) < 0) e(31);
 248         if (getgid() != k) e(32);
 249         if (getegid() != k) e(33);
 250         i = getuid();
 251         j = geteuid();
 252         k = (i + j + 1) & 0377;
 253         if (setuid(k) < 0) e(34);
 254         if (getuid() != k) e(35);
 255         if (geteuid() != k) e(36);
 256         i = getpid() & 0377;
 257         if (wait(&j) != -1) e(37);
 258         exit(i);
 259   }
 260 }
 261
 262 void test5g()
 263 {
 264   int n;
 265
 266   subtest = 7;
 267   signal(11, func11);
 268   signal(11, SIG_IGN);
 269   n = getpid();
 270   if (kill(n, 11) != 0) e(1);
 271   signal(11, SIG_DFL);
 272 }
 273
 274 void funcalrm(s)
 275 int s;                          /* for ANSI */
 276 {
 277   alarms++;
 278 }
 279
 280 void test5h()
 281 {
 282 /* When a signal knocks a processes out of PIPE, it is supposed to
 283  * get EINTR as error status.  Check that.
 284  */
 285   int n, j, fd[2];
 286
 287   subtest = 8;
 288   unlink("XXX.test5");
 289   if (signal(8, func8) == SIG_ERR) e(1);
 290   pipe(fd);
 291   if ((n = fork()) != 0) {
 292         /* Parent must delay to give child a chance to pause. */
 293         if (n < 0) ex();
 294         while (access("XXX.test5", 0) != 0) /* just wait */ ;
 295         sleep(1);
 296         unlink("XXX.test5");
 297         if (kill(n, 8) < 0) e(2);
 298         if (wait(&n) < 0) e(3);
 299         if (signal(8, SIG_DFL) == SIG_ERR) e(4);
 300         if (close(fd[0]) != 0) e(5);
 301         if (close(fd[1]) != 0) e(6);
 302   } else {
 303         if (creat("XXX.test5", 0777) < 0) e(7);
 304         j = read(fd[0], (char *) &n, 1);
 305         if (errno != EINTR) e(8);
 306         exit(0);
 307   }
 308 }
 309
 310 void test5i()
 311 {
 312   int fd[2], pid, buf[10], n;
 313
 314   subtest = 9;
 315   pipe(fd);
 316   unlink("XXXxxxXXX");
 317
 318   if ((pid = fork()) != 0) {
 319         /* Parent */
 320         /* Wait until child has started and has created the XXXxxxXXX file. */
 321         while (access("XXXxxxXXX", 0) != 0) /* loop */ ;
 322         sleep(1);
 323         if (kill(pid, SIGKILL) != 0) e(1);
 324         if (wait(&n) < 0) e(2);
 325         if (close(fd[0]) != 0) e(3);
 326         if (close(fd[1]) != 0) e(4);
 327   } else {
 328         if (creat("XXXxxxXXX", 0777) < 0) e(5);
 329         read(fd[0], (char *) buf, 1);
 330         e(5);           /* should be killed by signal and not get here */
 331   }
 332   unlink("XXXxxxXXX");
 333 }
 334
 335 void ex()
 336 {
 337   int e = errno;
 338   printf("Fork failed: %s (%d)\n", strerror(e), e);
 339   exit(1);
 340 }
 341