Minix2.0/src/test/test31.c
/* test31: mkfifo() Author: Jan-Mark Wams (jms@cs.vu.nl) */
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/wait.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <fcntl.h>
#include <limits.h>
#include <errno.h>
#include <time.h>
#include <stdio.h>
#define MAX_ERROR 4
#define ITERATIONS 10
#define System(cmd) if (system(cmd) != 0) printf("``%s'' failed\n", cmd)
#define Chdir(dir) if (chdir(dir) != 0) printf("Can't goto %s\n", dir)
#define Stat(a,b) if (stat(a,b) != 0) printf("Can't stat %s\n", a)
int errct = 0;
int subtest = 1;
int superuser;
char MaxName[NAME_MAX + 1]; /* Name of maximum length */
char MaxPath[PATH_MAX]; /* Same for path */
char ToLongName[NAME_MAX + 2]; /* Name of maximum +1 length */
char ToLongPath[PATH_MAX + 1]; /* Same for path, both too long */
_PROTOTYPE(void main, (int argc, char *argv[]));
_PROTOTYPE(void test31a, (void));
_PROTOTYPE(void test31b, (void));
_PROTOTYPE(void test31c, (void));
_PROTOTYPE(void makelongnames, (void));
_PROTOTYPE(void e, (int number));
_PROTOTYPE(void quit, (void));
void main(argc, argv)
int argc;
char *argv[];
{
int i, m = 0xFFFF;
sync();
if (argc == 2) m = atoi(argv[1]);
printf("Test 31 ");
fflush(stdout);
System("rm -rf DIR_31; mkdir DIR_31");
Chdir("DIR_31");
makelongnames();
superuser = (geteuid() == 0);
umask(0000);
for (i = 0; i < ITERATIONS; i++) {
if (m & 0001) test31a();
if (m & 0002) test31b();
if (m & 0004) test31c();
}
quit();
}
void test31a()
{ /* Test normal operation. */
#define BUF_SIZE 1024
int fd;
char buf[BUF_SIZE];
struct stat st, dirst;
time_t time1, time2;
int stat_loc, cnt;
subtest = 1;
System("rm -rf ../DIR_31/*");
/* Check if the file status information is updated correctly */
System("rm -rf fifo");
cnt = 0;
Stat(".", &dirst);
time(&time1);
while (time1 == time((time_t *)0))
;
do {
time(&time1);
if (mkfifo("fifo", 0644) != 0) e(1);
Stat("fifo", &st);
time(&time2);
} while (time1 != time2 && cnt++ < 100);
if (cnt >= 100) e(2);
if (st.st_uid != geteuid()) e(3); /* Uid should be set. */
#if defined(NGROUPS_MAX) && NGROUPS_MAX == 0
if (st.st_gid != getegid()) e(4);
#endif /* defined(NGROUPS_MAX) && NGROUPS_MAX == 0 */
if (!S_ISFIFO(st.st_mode)) e(5);
if (st.st_mode & 0777 != 0644) e(6);
if (st.st_nlink != 1) e(7);
if (st.st_ctime != time1) e(8);
if (st.st_atime != time1) e(9);
if (st.st_mtime != time1) e(10);
if (st.st_size != 0) e(11); /* File should be empty. */
/* Check if status for "." is updated. */
Stat(".", &st);
if (st.st_ctime <= dirst.st_ctime) e(12);
if (st.st_mtime <= dirst.st_mtime) e(13);
/* Basic checking if a fifo file created with mkfifo() is a pipe. */
alarm(10); /* in case fifo hangs */
switch (fork()) {
case -1: printf("Can't fork\n"); break;
case 0:
if ((fd = open("fifo", O_RDONLY)) != 3) e(14);
if (read(fd, buf, BUF_SIZE) != 7) e(15);
if (strcmp(buf, "banana") != 0) e(16);
if (close(fd) != 0) e(17);
if ((fd = open("fifo", O_WRONLY)) != 3) e(18);
if (write(fd, "thanks", 7) != 7) e(19);
if (close(fd) != 0) e(20);
exit(0);
default:
if ((fd = open("fifo", O_WRONLY)) != 3) e(21);
if (write(fd, "banana", 7) != 7) e(22);
if (close(fd) != 0) e(23);
if ((fd = open("fifo", O_RDONLY)) != 3) e(24);
if (read(fd, buf, BUF_SIZE) != 7) e(25);
if (strcmp(buf, "thanks") != 0) e(26);
if (close(fd) != 0) e(27);
wait(&stat_loc);
if (stat_loc != 0) e(28); /* Alarm? */
}
alarm(0);
}
void test31b()
{
subtest = 2;
System("rm -rf ../DIR_31/*");
/* Test maximal file name length. */
if (mkfifo(MaxName, 0777) != 0) e(1);
if (unlink(MaxName) != 0) e(2);
MaxPath[strlen(MaxPath) - 2] = '/';
MaxPath[strlen(MaxPath) - 1] = 'a'; /* make ././.../a */
if (mkfifo(MaxPath, 0777) != 0) e(3);
if (unlink(MaxPath) != 0) e(4);
MaxPath[strlen(MaxPath) - 1] = '/'; /* make ././.../a */
}
void test31c()
{
subtest = 3;
System("rm -rf ../DIR_31/*");
/* Check if mkfifo() removes, files, fifos, dirs. */
if (mkfifo("fifo", 0777) != 0) e(1);
System("mkdir dir; > file");
if (mkfifo("fifo", 0777) != -1) e(2);
if (errno != EEXIST) e(3);
if (mkfifo("dir", 0777) != -1) e(4);
if (errno != EEXIST) e(5);
if (mkfifo("file", 0777) != -1) e(6);
if (errno != EEXIST) e(7);
/* Test empty path. */
if (mkfifo("", 0777) != -1) e(8);
if (errno != ENOENT) e(9);
if (mkfifo("/tmp/noway/out", 0777) != -1) e(10);
if (errno != ENOENT) e(11);
/* Test if path prefix is a directory. */
if (mkfifo("/etc/passwd/nono", 0777) != -1) e(12);
if (errno != ENOTDIR) e(13);
mkdir("bar", 0777); /* make bar */
/* Check if no access on part of path generates the correct error. */
System("chmod 577 bar"); /* r-xrwxrwx */
if (!superuser) {
if (mkfifo("bar/nono", 0666) != -1) e(14);
if (errno != EACCES) e(15);
}
if (superuser) {
if (mkfifo("bar/nono", 0666) != 0) e(14);
if (unlink("bar/nono") != 0) e(666);
}
System("chmod 677 bar"); /* rw-rwxrwx */
if (!superuser) {
if (mkfifo("bar/../nono", 0666) != -1) e(16);
if (errno != EACCES) e(17);
}
if (unlink("nono") != -1) e(18);
/* Clean up bar. */
System("rm -rf bar");
/* Test ToLongName and ToLongPath */
#ifdef _POSIX_NO_TRUNC
# if _POSIX_NO_TRUNC - 0 != -1
if (mkfifo(ToLongName, 0777) != -1) e(19);
if (errno != ENAMETOOLONG) e(20);
# else
if (mkfifo(ToLongName, 0777) != 0) e(21);
# endif
#else
# include "error, this case requires dynamic checks and is not handled"
#endif
ToLongPath[PATH_MAX - 2] = '/';
ToLongPath[PATH_MAX - 1] = 'a';
if (mkfifo(ToLongPath, 0777) != -1) e(22);
if (errno != ENAMETOOLONG) e(23);
ToLongPath[PATH_MAX - 1] = '/';
}
void makelongnames()
{
register int i;
memset(MaxName, 'a', NAME_MAX);
MaxName[NAME_MAX] = '\0';
for (i = 0; i < PATH_MAX - 1; i++) { /* idem path */
MaxPath[i++] = '.';
MaxPath[i] = '/';
}
MaxPath[PATH_MAX - 1] = '\0';
strcpy(ToLongName, MaxName); /* copy them Max to ToLong */
strcpy(ToLongPath, MaxPath);
ToLongName[NAME_MAX] = 'a';
ToLongName[NAME_MAX + 1] = '\0'; /* extend ToLongName by one too many */
ToLongPath[PATH_MAX - 1] = '/';
ToLongPath[PATH_MAX] = '\0'; /* inc ToLongPath by one */
}
void e(n)
int n;
{
int err_num = errno; /* Save in case printf clobbers it. */
printf("Subtest %d, error %d errno=%d: ", subtest, n, errno);
errno = err_num;
perror("");
if (errct++ > MAX_ERROR) {
printf("Too many errors; test aborted\n");
chdir("..");
system("rm -rf DIR*");
exit(1);
}
errno = 0;
}
void quit()
{
Chdir("..");
System("rm -rf DIR_31");
if (errct == 0) {
printf("ok\n");
exit(0);
} else {
printf("%d errors\n", errct);
exit(1);
}
}