Minix2.0/src/test/test35.c
/* test35: utime() 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 <utime.h>
#include <errno.h>
#include <time.h>
#include <ctype.h>
#include <stdio.h>
#define MAX_ERROR 1
#define ITERATIONS 10
#define N 100
#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)
#define Mkfifo(f) if (mkfifo(f,0777)!=0) printf("Can't make fifo %s\n", f)
#define Mkdir(f) if (mkdir(f,0777)!=0) printf("Can't make dir %s\n", f)
#define Creat(f) if (close(creat(f,0777))!=0) printf("Can't creat %s\n",f)
#define Time(t) if (time(t) == (time_t)-1) printf("Time error\n")
#define Chown(f,u,g) if (chown(f,u,g) != 0) printf("Can't chown %s\n", f)
#define Chmod(f,m) if (chmod(f,m) != 0) printf("Can't chmod %s\n", f)
#define PASSWD_FILE "/etc/passwd"
int errct = 0;
int subtest = 1;
int I_can_chown;
int superuser;
char MaxName[NAME_MAX + 1]; /* Name of maximum length */
char MaxPath[PATH_MAX]; /* Same for path */
char NameTooLong[NAME_MAX + 2]; /* Name of maximum +1 length */
char PathTooLong[PATH_MAX + 1]; /* Same for path, both too long */
_PROTOTYPE(void main, (int argc, char *argv[]));
_PROTOTYPE(void test35a, (void));
_PROTOTYPE(void test35b, (void));
_PROTOTYPE(void test35c, (void));
_PROTOTYPE(void makelongnames, (void));
_PROTOTYPE(void e, (int number));
_PROTOTYPE(void quit, (void));
_PROTOTYPE(void getids, (uid_t * uid, gid_t * gid));
void main(argc, argv)
int argc;
char *argv[];
{
int i, m = 0xFFFF;
sync();
if (argc == 2) m = atoi(argv[1]);
printf("Test 35 ");
fflush(stdout);
System("rm -rf DIR_35; mkdir DIR_35");
Chdir("DIR_35");
makelongnames();
superuser = (geteuid() == 0);
#ifdef _POSIX_CHOWN_RESTRICTED
# if _POSIX_CHOWN_RESTRICTED - 0 != -1
I_can_chown = superuser;
# else
I_can_chown = 1;
# endif
#else
# include "error, this case requires dynamic checks and is not handled"
#endif
for (i = 0; i < ITERATIONS; i++) {
if (m & 0001) test35a();
if (m & 0002) test35b();
if (m & 0004) test35c();
}
quit();
}
void test35a()
{ /* Test normal operation. */
struct stat st;
struct utimbuf ub;
time_t time1, time2;
int cnt;
subtest = 1;
/* Creat scratch file. */
Creat("foo");
/* Set file times back two seconds. */
Stat("foo", &st);
ub.actime = st.st_atime - 2;
ub.modtime = st.st_mtime - 2;
Time(&time1);
utime("foo", &ub);
Time(&time2);
Stat("foo", &st);
if (ub.actime != st.st_atime) e(1);
if (ub.modtime != st.st_mtime) e(2);
/* The status changed time sould be changed. */
#ifndef V1_FILESYSTEM
if (st.st_ctime < time1) e(3);
#endif
if (st.st_ctime > time2) e(4);
/* Add twenty seconds. */
Stat("foo", &st);
ub.actime = st.st_atime + 20;
ub.modtime = st.st_mtime + 20;
Time(&time1);
utime("foo", &ub);
Time(&time2);
Stat("foo", &st);
if (ub.actime != st.st_atime) e(5);
if (ub.modtime != st.st_mtime) e(6);
if (st.st_ctime < time1) e(7);
#ifndef V1_FILESYSTEM
if (st.st_ctime > time2) e(8);
#endif
/* Try 100 times to do utime in less than one second. */
cnt = 0;
do {
Time(&time1);
utime("foo", (struct utimbuf *) NULL);
Time(&time2);
} while (time1 != time2 && cnt++ < 100);
if (time1 == time2) {
Stat("foo", &st);
Time(&time2);
if (st.st_atime != time1) e(9);
if (st.st_mtime != time1) e(10);
} else {
Stat("foo", &st);
if (st.st_atime > time2) e(11);
if (st.st_mtime > time2) e(12);
Time(&time2);
if (st.st_atime < time1) e(13);
if (st.st_mtime < time1) e(14);
}
if (st.st_ctime < time1) e(15);
if (st.st_ctime > time2) e(16);
System("rm -rf ../DIR_35/*");
}
void test35b()
{
subtest = 2;
/* MaxPath and MaxName checkup. */
Creat(MaxName);
MaxPath[strlen(MaxPath) - 2] = '/';
MaxPath[strlen(MaxPath) - 1] = 'a'; /* make ././.../a */
Creat(MaxPath);
if (utime(MaxName, NULL) != 0) e(1);
if (utime(MaxPath, NULL) != 0) e(2);
/* The owner doesn't need write permisson to set times. */
Creat("foo");
if (chmod("foo", 0) != 0) e(3);
if (utime("foo", NULL) != 0) e(4);
if (chmod("foo", 0777) != 0) e(5);
if (utime("foo", NULL) != 0) e(6);
System("rm -rf ../DIR_35/*");
}
void test35c()
{
gid_t gid, gid2;
uid_t uid, uid2;
struct utimbuf ub;
int stat_loc;
subtest = 3;
/* Access problems. */
Mkdir("bar");
Creat("bar/tryme");
if (superuser) {
Chmod("bar", 0000); /* No search permisson at all. */
if (utime("bar/tryme", NULL) != 0) e(1);
}
if (!superuser) {
Chmod("bar", 0677); /* No search permisson. */
if (utime("bar/tryme", NULL) != -1) e(2);
if (errno != EACCES) e(3);
}
Chmod("bar", 0777);
if (I_can_chown) {
switch (fork()) {
case -1: printf("Can't fork\n"); break;
case 0:
alarm(20);
/* Get two differend non root uids. */
if (superuser) {
getids(&uid, &gid);
if (uid == 0) getids(&uid, &gid);
if (uid == 0) e(4);
}
if (!superuser) {
uid = geteuid();
gid = getegid();
}
getids(&uid2, &gid);
if (uid == uid2) getids(&uid2, &gid2);
if (uid == uid2) e(5);
/* Creat a number of files for root, user and user2. */
Creat("rootfile"); /* Owned by root. */
Chmod("rootfile", 0600);
Chown("rootfile", 0, 0);
Creat("user2file"); /* Owned by user 2, writeable. */
Chmod("user2file", 0020);
Chown("user2file", uid2, gid);
Creat("user2private"); /* Owned by user 2, privately. */
Chmod("user2private", 0600);
Chown("user2private", uid2, gid);
if (superuser) {
setgid(gid);
setuid(uid);
}
/* We now are user ``uid'' from group ``gid''. */
ub.actime = (time_t) 12345L;
ub.modtime = (time_t) 12345L;
if (utime("rootfile", NULL) != -1) e(6);
if (errno != EACCES) e(7);
if (utime("rootfile", &ub) != -1) e(8);
if (errno != EPERM) e(9);
if (utime("user2file", NULL) != 0) e(10);
if (utime("user2file", &ub) != -1) e(11);
if (errno != EPERM) e(12);
if (utime("user2private", NULL) != -1) e(13);
if (errno != EACCES) e(14);
if (utime("user2private", &ub) != -1) e(15);
if (errno != EPERM) e(16);
exit(errct ? 1 : 0);
default:
wait(&stat_loc);
if (stat_loc != 0) e(17); /* Alarm? */
}
}
/* Test names that are too long. */
#ifdef _POSIX_NO_TRUNC
# if _POSIX_NO_TRUNC - 0 != -1
/* Not exist might also be a propper response? */
if (utime(NameTooLong, NULL) != -1) e(18);
if (errno != ENAMETOOLONG) e(19);
# else
Creat(NameTooLong);
if (utime(NameTooLong, NULL) != 0) e(20);
# endif
#else
# include "error, this case requires dynamic checks and is not handled"
#endif
/* Make PathTooLong contain ././.../a */
PathTooLong[strlen(PathTooLong) - 2] = '/';
PathTooLong[strlen(PathTooLong) - 1] = 'a';
Creat("a");
if (utime(PathTooLong, NULL) != -1) e(21);
if (errno != ENAMETOOLONG) e(22);
/* Non existing file name. */
if (utime("nonexist", NULL) != -1) e(23);
if (errno != ENOENT) e(24);
/* Empty file name. */
if (utime("", NULL) != -1) e(25);
if (errno != ENOENT) e(26);
System("rm -rf ../DIR_35/*");
}
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(NameTooLong, MaxName); /* copy them Max to TooLong */
strcpy(PathTooLong, MaxPath);
NameTooLong[NAME_MAX] = 'a';
NameTooLong[NAME_MAX + 1] = '\0'; /* extend NameTooLong by one too many*/
PathTooLong[PATH_MAX - 1] = '/';
PathTooLong[PATH_MAX] = '\0'; /* inc PathTooLong 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* > /dev/null 2>/dev/null");
exit(1);
}
errno = 0;
}
void quit()
{
Chdir("..");
System("rm -rf DIR_35");
if (errct == 0) {
printf("ok\n");
exit(0);
} else {
printf("%d errors\n", errct);
exit(1);
}
}
/* Getids returns a valid uid and gid. Is used PASSWD FILE.
** It assumes the following format for a passwd file line:
** <user_name>:<passwd>:<uid>:<gid>:<other_stuff>
** If no uids and gids can be found, it will only return 0 ids.
*/
void getids(r_uid, r_gid)
uid_t *r_uid;
gid_t *r_gid;
{
char line[N];
char *p;
uid_t uid;
gid_t gid;
FILE *fp;
int i;
static uid_t a_uid[N]; /* Array for uids. */
static gid_t a_gid[N]; /* Array for gids. */
static int nuid = 0, ngid = 0;/* The number of user & group ids. */
static int cuid = 0, cgid = 0;/* The current id index. */
/* If we don't have any uids go read some from the passwd file. */
if (nuid == 0) {
a_uid[nuid++] = 0; /* Root uid and gid. */
a_gid[ngid++] = 0;
if ((fp = fopen(PASSWD_FILE, "r")) == NULL) {
printf("Can't open ");
perror(PASSWD_FILE);
}
while (fp != NULL && fgets(line, sizeof(line), fp) != NULL) {
p = strchr(line, ':');
if (p != NULL) p = strchr(p + 1, ':');
if (p != NULL) {
p++;
uid = 0;
while (isdigit(*p)) {
uid *= 10;
uid += (uid_t) (*p - '0');
p++;
}
if (*p != ':') continue;
p++;
gid = 0;
while (isdigit(*p)) {
gid *= 10;
gid += (gid_t) (*p - '0');
p++;
}
if (*p != ':') continue;
if (nuid < N) {
for (i = 0; i < nuid; i++)
if (a_uid[i] == uid) break;
if (i == nuid) a_uid[nuid++] = uid;
}
if (ngid < N) {
for (i = 0; i < ngid; i++)
if (a_gid[i] == gid) break;
if (i == ngid) a_gid[ngid++] = gid;
}
if (nuid >= N && ngid >= N) break;
}
}
if (fp != NULL) fclose(fp);
}
/* We now have uids and gids in a_uid and a_gid. */
if (cuid >= nuid) cuid = 0;
if (cgid >= ngid) cgid = 0;
*r_uid = a_uid[cuid++];
*r_gid = a_gid[cgid++];
}