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Pid build and working
2020-02-21 00:59:27 +05:30
/* test33: access() 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>
int max_error = 1;
#include "common.h"
#define ITERATIONS 2
#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 Chmod(a,b) if (chmod(a,b) != 0) printf("Can't chmod %s\n", a)
#define Mkfifo(f) if (mkfifo(f,0777)!=0) printf("Can't make fifo %s\n", f)
int superuser; /* nonzero if uid == euid (euid == 0 always) */
char *MaxName; /* Name of maximum length */
char MaxPath[PATH_MAX]; /* Same for path */
char *ToLongName; /* Name of maximum +1 length */
char ToLongPath[PATH_MAX + 1]; /* Same for path, both too long */
void test33a(void);
void test33b(void);
void test33c(void);
void test33d(void);
void test_access(void);
void makelongnames(void);
int main(int argc, char *argv[])
{
int i, m = 0xFFFF;
sync();
if (argc == 2) m = atoi(argv[1]);
umask(0000);
start(33);
if (geteuid() != 0) {
printf("must be setuid root; test aborted\n");
cleanup();
exit(1);
}
if (getuid() == 0) {
printf("must be setuid root logged in as someone else; test aborted\n");
cleanup();
exit(1);
}
makelongnames();
superuser = (getuid() == 0);
for (i = 0; i < ITERATIONS; i++) {
if (m & 0001) test33a();
if (m & 0002) test33b();
if (m & 0004) test33c();
if (m & 0010) test33d();
}
quit();
return 1;
}
void test33a()
{ /* Test normal operation. */
int stat_loc; /* For the wait(&stat_loc) call. */
subtest = 1;
System("rm -rf ../DIR_33/*");
/* To test normal access first make some files for real uid. */
switch (fork()) {
case -1: printf("Can't fork\n"); break;
case 0:
alarm(20);
setuid(getuid()); /* (Re)set the effective ids to the
* real ids. */
setgid(getgid());
System("> rwx; chmod 700 rwx");
System("> rw_; chmod 600 rw_");
System("> r_x; chmod 500 r_x");
System("> r__; chmod 400 r__");
System("> _wx; chmod 300 _wx");
System("> _w_; chmod 200 _w_");
System("> __x; chmod 100 __x");
System("> ___; chmod 000 ___");
exit(0);
default:
wait(&stat_loc);
if (stat_loc != 0) e(1);/* Alarm? */
}
test_access();
/* Let's test access() on directorys. */
switch (fork()) {
case -1: printf("Can't fork\n"); break;
case 0:
alarm(20);
setuid(getuid()); /* (Re)set the effective ids to the
* real ids. */
setgid(getgid());
System("rm -rf [_r][_w][_x]");
System("mkdir rwx; chmod 700 rwx");
System("mkdir rw_; chmod 600 rw_");
System("mkdir r_x; chmod 500 r_x");
System("mkdir r__; chmod 400 r__");
System("mkdir _wx; chmod 300 _wx");
System("mkdir _w_; chmod 200 _w_");
System("mkdir __x; chmod 100 __x");
System("mkdir ___; chmod 000 ___");
exit(0);
default:
wait(&stat_loc);
if (stat_loc != 0) e(2);/* Alarm? */
}
test_access();
switch (fork()) {
case -1: printf("Can't fork\n"); break;
case 0:
alarm(20);
setuid(getuid()); /* (Re)set the effective ids to the
* real ids. */
setgid(getgid());
System("rmdir [_r][_w][_x]");
Mkfifo("rwx");
System("chmod 700 rwx");
Mkfifo("rw_");
System("chmod 600 rw_");
Mkfifo("r_x");
System("chmod 500 r_x");
Mkfifo("r__");
System("chmod 400 r__");
Mkfifo("_wx");
System("chmod 300 _wx");
Mkfifo("_w_");
System("chmod 200 _w_");
Mkfifo("__x");
System("chmod 100 __x");
Mkfifo("___");
System("chmod 000 ___");
exit(0);
default:
wait(&stat_loc);
if (stat_loc != 0) e(3);/* Alarm? */
}
test_access();
/* Remove all the fifos. */
switch (fork()) {
case -1: printf("Can't fork\n"); break;
case 0:
alarm(20);
setuid(getuid());
setgid(getgid());
System("rm -rf [_r][_w][_x]");
exit(0);
default:
wait(&stat_loc);
if (stat_loc != 0) e(4);/* Alarm? */
}
}
void test33b()
{
int stat_loc; /* For the wait(&stat_loc) call. */
subtest = 2;
System("rm -rf ../DIR_33/*");
switch (fork()) {
case -1: printf("Can't fork\n"); break;
case 0:
alarm(20);
/* (Re)set the effective ids to the real ids. */
setuid(getuid());
setgid(getgid());
System("> ______rwx; chmod 007 ______rwx");
System("> ________x; chmod 001 ________x");
System("> _________; chmod 000 _________");
exit(0);
default:
wait(&stat_loc);
if (stat_loc != 0) e(1);/* Alarm? */
}
/* If we are superuser, we have access to all. */
/* Well, almost, execution access might need at least one X bit. */
if (superuser) {
if (access("_________", R_OK) != 0) e(2);
if (access("_________", W_OK) != 0) e(3);
if (access("________x", R_OK) != 0) e(4);
if (access("________x", W_OK) != 0) e(5);
if (access("________x", X_OK) != 0) e(6);
if (access("______rwx", R_OK) != 0) e(7);
if (access("______rwx", W_OK) != 0) e(8);
if (access("______rwx", X_OK) != 0) e(9);
}
if (!superuser) {
if (access("_________", R_OK) != -1) e(10);
if (errno != EACCES) e(11);
if (access("_________", W_OK) != -1) e(12);
if (errno != EACCES) e(13);
if (access("_________", X_OK) != -1) e(14);
if (errno != EACCES) e(15);
if (access("________x", R_OK) != -1) e(16);
if (errno != EACCES) e(17);
if (access("________x", W_OK) != -1) e(18);
if (errno != EACCES) e(19);
if (access("________x", X_OK) != -1) e(20);
if (errno != EACCES) e(21);
if (access("______rwx", R_OK) != -1) e(22);
if (errno != EACCES) e(23);
if (access("______rwx", W_OK) != -1) e(24);
if (errno != EACCES) e(25);
if (access("______rwx", X_OK) != -1) e(26);
if (errno != EACCES) e(27);
}
/* If the real uid != effective uid. */
if (!superuser) {
System("rm -rf [_r][_w][_x]");
System("> rwx");
Chmod("rwx", 0700);
System("> rw_");
Chmod("rw_", 0600);
System("> r_x");
Chmod("r_x", 0500);
System("> r__");
Chmod("r__", 0400);
System("> _wx");
Chmod("_wx", 0300);
System("> _w_");
Chmod("_w_", 0200);
System("> __x");
Chmod("__x", 0100);
System("> ___");
Chmod("___", 0000);
if (access("rwx", F_OK) != 0) e(28);
if (access("rwx", R_OK) != -1) e(29);
if (errno != EACCES) e(30);
if (access("rwx", W_OK) != -1) e(31);
if (errno != EACCES) e(32);
if (access("rwx", X_OK) != -1) e(33);
if (errno != EACCES) e(34);
if (access("rw_", F_OK) != 0) e(35);
if (access("rw_", R_OK) != -1) e(36);
if (errno != EACCES) e(37);
if (access("rw_", W_OK) != -1) e(38);
if (errno != EACCES) e(39);
if (access("rw_", X_OK) != -1) e(40);
if (errno != EACCES) e(41);
if (access("r_x", F_OK) != 0) e(42);
if (access("r_x", R_OK) != -1) e(43);
if (errno != EACCES) e(44);
if (access("r_x", W_OK) != -1) e(45);
if (errno != EACCES) e(46);
if (access("r_x", X_OK) != -1) e(47);
if (errno != EACCES) e(48);
if (access("r__", F_OK) != 0) e(49);
if (access("r__", R_OK) != -1) e(50);
if (errno != EACCES) e(51);
if (access("r__", W_OK) != -1) e(52);
if (errno != EACCES) e(53);
if (access("r__", X_OK) != -1) e(54);
if (errno != EACCES) e(55);
if (access("_wx", F_OK) != 0) e(56);
if (access("_wx", R_OK) != -1) e(57);
if (errno != EACCES) e(58);
if (access("_wx", W_OK) != -1) e(59);
if (errno != EACCES) e(60);
if (access("_wx", X_OK) != -1) e(61);
if (errno != EACCES) e(62);
if (access("_w_", F_OK) != 0) e(63);
if (access("_w_", R_OK) != -1) e(64);
if (errno != EACCES) e(65);
if (access("_w_", W_OK) != -1) e(66);
if (errno != EACCES) e(67);
if (access("_w_", X_OK) != -1) e(68);
if (errno != EACCES) e(69);
if (access("__x", F_OK) != 0) e(70);
if (access("__x", R_OK) != -1) e(71);
if (errno != EACCES) e(72);
if (access("__x", W_OK) != -1) e(73);
if (errno != EACCES) e(74);
if (access("__x", X_OK) != -1) e(75);
if (errno != EACCES) e(76);
if (access("___", F_OK) != 0) e(77);
if (access("___", R_OK) != -1) e(78);
if (errno != EACCES) e(79);
if (access("___", W_OK) != -1) e(80);
if (errno != EACCES) e(81);
if (access("___", X_OK) != -1) e(82);
if (errno != EACCES) e(83);
System("rm -rf [_r][_w][_x]");
}
}
void test33c()
{ /* Test errors returned. */
int i, fd, does_truncate;
subtest = 3;
System("rm -rf ../DIR_33/*");
/* Test what access() does with non existing files. */
System("rm -rf nonexist");
if (access("noexist", F_OK) != -1) e(1);
if (errno != ENOENT) e(2);
if (access("noexist", R_OK) != -1) e(3);
if (errno != ENOENT) e(4);
if (access("noexist", W_OK) != -1) e(5);
if (errno != ENOENT) e(6);
if (access("noexist", X_OK) != -1) e(7);
if (errno != ENOENT) e(8);
if (access("noexist", R_OK | W_OK) != -1) e(9);
if (errno != ENOENT) e(10);
if (access("noexist", R_OK | X_OK) != -1) e(11);
if (errno != ENOENT) e(12);
if (access("noexist", W_OK | X_OK) != -1) e(13);
if (errno != ENOENT) e(14);
if (access("noexist", R_OK | W_OK | X_OK) != -1) e(15);
if (errno != ENOENT) e(16);
/* Test access on a nonsearchable path. */
if (mkdir("nosearch", 0777) != 0) e(1000);
if ( (i = creat("nosearch/file", 0666)) < 0) e(1001);
if (close(i) < 0) e(1002);
if ( (i = creat("file", 0666) < 0)) e(1003);
if (close(i) < 0) e(1004);
if (chmod("nosearch/file", 05777) < 0) e(1005);
if (chmod("file", 05777) < 0) e(1006);
if (chmod("nosearch", 0677) != 0) e(1007);
if (access("nosearch/file", F_OK) != 0) e(17);
/* Test ToLongName and ToLongPath */
does_truncate = does_fs_truncate();
if (does_truncate) {
if ((fd = creat(ToLongName, 0777)) != 0) e(18);
if (close(fd) != 0) e(19);
if (access(ToLongName, F_OK) != 0) e(20);
} else {
if ((fd = creat(ToLongName, 0777)) != -1) e(21);
if (errno != ENAMETOOLONG) e(22);
(void) close(fd); /* Just in case */
if (access(ToLongName, F_OK) != -1) e(23);
if (errno != ENAMETOOLONG) e(24);
}
ToLongPath[PATH_MAX - 2] = '/';
ToLongPath[PATH_MAX - 1] = 'a';
if (access(ToLongPath, F_OK) != -1) e(27);
if (errno != ENAMETOOLONG) e(28);
ToLongPath[PATH_MAX - 1] = '/';
/* Test empty strings. */
if (access("", F_OK) != -1) e(29);
if (errno != ENOENT) e(30);
System("rm -rf idonotexist");
if (access("idonotexist", F_OK) != -1) e(31);
if (errno != ENOENT) e(32);
/* Test non directorys in prefix of path. */
if (access("/etc/passwd/dir/foo", F_OK) != -1) e(33);
if (errno != ENOTDIR) e(34);
System("rm -rf nodir; > nodir");
if (access("nodir/foo", F_OK) != -1) e(35);
if (errno != ENOTDIR) e(36);
/* Test if invalid amode arguments are signaled. */
System("> allmod");
Chmod("allmod", 05777);
for (i = -1025; i < 1025; i++) {
if ((mode_t) i != F_OK && ((mode_t) i & ~(R_OK | W_OK | X_OK)) != 0) {
if (access("allmod", (mode_t) i) != -1) e(37);
if (errno != EINVAL) e(38);
} else
if (access("allmod", (mode_t) i) != 0) e(39);
}
}
void test33d()
{ /* Test access() flags. */
#define EXCLUDE(a,b) (((a)^(b)) == ((a)|(b)))
subtest = 4;
System("rm -rf ../DIR_33/*");
/* The test are rather strong, stronger that POSIX specifies. */
/* The should be OR able, this test tests if all the 1 bits */
/* Are in diferent places. This should be what one wants. */
if (!EXCLUDE(R_OK, W_OK | X_OK)) e(1);
if (!EXCLUDE(W_OK, R_OK | X_OK)) e(2);
if (!EXCLUDE(X_OK, R_OK | W_OK)) e(3);
if (F_OK == R_OK) e(4);
if (F_OK == W_OK) e(5);
if (F_OK == X_OK) e(6);
if (F_OK == (R_OK | W_OK)) e(7);
if (F_OK == (W_OK | X_OK)) e(8);
if (F_OK == (R_OK | X_OK)) e(9);
if (F_OK == (R_OK | W_OK | X_OK)) e(10);
}
void test_access()
{ /* Test all [_r][_w][_x] files. */
if (!superuser) {
/* Test normal access. */
if (access("rwx", F_OK) != 0) e(11);
if (access("rwx", R_OK) != 0) e(12);
if (access("rwx", W_OK) != 0) e(13);
if (access("rwx", X_OK) != 0) e(14);
if (access("rwx", R_OK | W_OK) != 0) e(15);
if (access("rwx", R_OK | X_OK) != 0) e(16);
if (access("rwx", W_OK | X_OK) != 0) e(17);
if (access("rwx", R_OK | W_OK | X_OK) != 0) e(18);
if (access("rw_", F_OK) != 0) e(19);
if (access("rw_", R_OK) != 0) e(20);
if (access("rw_", W_OK) != 0) e(21);
if (access("rw_", X_OK) != -1) e(22);
if (errno != EACCES) e(23);
if (access("rw_", R_OK | W_OK) != 0) e(24);
if (access("rw_", R_OK | X_OK) != -1) e(25);
if (errno != EACCES) e(26);
if (access("rw_", W_OK | X_OK) != -1) e(27);
if (errno != EACCES) e(28);
if (access("rw_", R_OK | W_OK | X_OK) != -1) e(29);
if (errno != EACCES) e(30);
if (access("r_x", F_OK) != 0) e(31);
if (access("r_x", R_OK) != 0) e(32);
if (access("r_x", W_OK) != -1) e(33);
if (errno != EACCES) e(34);
if (access("r_x", X_OK) != 0) e(35);
if (access("r_x", R_OK | W_OK) != -1) e(36);
if (errno != EACCES) e(37);
if (access("r_x", R_OK | X_OK) != 0) e(38);
if (access("r_x", W_OK | X_OK) != -1) e(39);
if (errno != EACCES) e(40);
if (access("r_x", R_OK | W_OK | X_OK) != -1) e(41);
if (errno != EACCES) e(42);
if (access("r__", F_OK) != 0) e(43);
if (access("r__", R_OK) != 0) e(44);
if (access("r__", W_OK) != -1) e(45);
if (errno != EACCES) e(46);
if (access("r__", X_OK) != -1) e(47);
if (errno != EACCES) e(48);
if (access("r__", R_OK | W_OK) != -1) e(49);
if (errno != EACCES) e(50);
if (access("r__", R_OK | X_OK) != -1) e(51);
if (errno != EACCES) e(52);
if (access("r__", W_OK | X_OK) != -1) e(53);
if (errno != EACCES) e(54);
if (access("r__", R_OK | W_OK | X_OK) != -1) e(55);
if (errno != EACCES) e(56);
if (access("_wx", F_OK) != 0) e(57);
if (access("_wx", R_OK) != -1) e(58);
if (errno != EACCES) e(59);
if (access("_wx", W_OK) != 0) e(60);
if (access("_wx", X_OK) != 0) e(61);
if (access("_wx", R_OK | W_OK) != -1) e(62);
if (errno != EACCES) e(63);
if (access("_wx", R_OK | X_OK) != -1) e(64);
if (errno != EACCES) e(65);
if (access("_wx", W_OK | X_OK) != 0) e(66);
if (access("_wx", R_OK | W_OK | X_OK) != -1) e(67);
if (errno != EACCES) e(68);
if (access("_w_", F_OK) != 0) e(69);
if (access("_w_", R_OK) != -1) e(70);
if (errno != EACCES) e(71);
if (access("_w_", W_OK) != 0) e(72);
if (access("_w_", X_OK) != -1) e(73);
if (errno != EACCES) e(74);
if (access("_w_", R_OK | W_OK) != -1) e(75);
if (errno != EACCES) e(76);
if (access("_w_", R_OK | X_OK) != -1) e(77);
if (errno != EACCES) e(78);
if (access("_w_", W_OK | X_OK) != -1) e(79);
if (errno != EACCES) e(80);
if (access("_w_", R_OK | W_OK | X_OK) != -1) e(81);
if (errno != EACCES) e(82);
if (access("__x", F_OK) != 0) e(83);
if (access("__x", R_OK) != -1) e(84);
if (errno != EACCES) e(85);
if (access("__x", W_OK) != -1) e(86);
if (errno != EACCES) e(87);
if (access("__x", X_OK) != 0) e(88);
if (access("__x", R_OK | W_OK) != -1) e(89);
if (errno != EACCES) e(90);
if (access("__x", R_OK | X_OK) != -1) e(91);
if (errno != EACCES) e(92);
if (access("__x", W_OK | X_OK) != -1) e(93);
if (errno != EACCES) e(94);
if (access("__x", R_OK | W_OK | X_OK) != -1) e(95);
if (errno != EACCES) e(96);
if (access("___", F_OK) != 0) e(97);
if (access("___", R_OK) != -1) e(98);
if (errno != EACCES) e(99);
if (access("___", W_OK) != -1) e(100);
if (errno != EACCES) e(101);
if (access("___", X_OK) != -1) e(102);
if (errno != EACCES) e(103);
if (access("___", R_OK | W_OK) != -1) e(104);
if (errno != EACCES) e(105);
if (access("___", R_OK | X_OK) != -1) e(106);
if (errno != EACCES) e(107);
if (access("___", W_OK | X_OK) != -1) e(108);
if (errno != EACCES) e(109);
if (access("___", R_OK | W_OK | X_OK) != -1) e(110);
if (errno != EACCES) e(111);
}
if (superuser) {
/* Test root access don't test X_OK on [_r][_w]_ files. */
if (access("rwx", F_OK) != 0) e(112);
if (access("rwx", R_OK) != 0) e(113);
if (access("rwx", W_OK) != 0) e(114);
if (access("rwx", X_OK) != 0) e(115);
if (access("rwx", R_OK | W_OK) != 0) e(116);
if (access("rwx", R_OK | X_OK) != 0) e(117);
if (access("rwx", W_OK | X_OK) != 0) e(118);
if (access("rwx", R_OK | W_OK | X_OK) != 0) e(119);
if (access("rw_", F_OK) != 0) e(120);
if (access("rw_", R_OK) != 0) e(121);
if (access("rw_", W_OK) != 0) e(122);
if (access("rw_", R_OK | W_OK) != 0) e(123);
if (access("r_x", F_OK) != 0) e(124);
if (access("r_x", R_OK) != 0) e(125);
if (access("r_x", W_OK) != 0) e(126);
if (access("r_x", X_OK) != 0) e(127);
if (access("r_x", R_OK | W_OK) != 0) e(128);
if (access("r_x", R_OK | X_OK) != 0) e(129);
if (access("r_x", W_OK | X_OK) != 0) e(130);
if (access("r_x", R_OK | W_OK | X_OK) != 0) e(131);
if (access("r__", F_OK) != 0) e(132);
if (access("r__", R_OK) != 0) e(133);
if (access("r__", W_OK) != 0) e(134);
if (access("r__", R_OK | W_OK) != 0) e(135);
if (access("_wx", F_OK) != 0) e(136);
if (access("_wx", R_OK) != 0) e(137);
if (access("_wx", W_OK) != 0) e(138);
if (access("_wx", X_OK) != 0) e(139);
if (access("_wx", R_OK | W_OK) != 0) e(140);
if (access("_wx", R_OK | X_OK) != 0) e(141);
if (access("_wx", W_OK | X_OK) != 0) e(142);
if (access("_wx", R_OK | W_OK | X_OK) != 0) e(143);
if (access("_w_", F_OK) != 0) e(144);
if (access("_w_", R_OK) != 0) e(145);
if (access("_w_", W_OK) != 0) e(146);
if (access("_w_", R_OK | W_OK) != 0) e(147);
if (access("__x", F_OK) != 0) e(148);
if (access("__x", R_OK) != 0) e(149);
if (access("__x", W_OK) != 0) e(150);
if (access("__x", X_OK) != 0) e(151);
if (access("__x", R_OK | W_OK) != 0) e(152);
if (access("__x", R_OK | X_OK) != 0) e(153);
if (access("__x", W_OK | X_OK) != 0) e(154);
if (access("__x", R_OK | W_OK | X_OK) != 0) e(155);
if (access("___", F_OK) != 0) e(156);
if (access("___", R_OK) != 0) e(157);
if (access("___", W_OK) != 0) e(158);
if (access("___", R_OK | W_OK) != 0) e(159);
}
}
void makelongnames()
{
register int i;
int max_name_length;
max_name_length = name_max("."); /* Aka NAME_MAX, but not every FS supports
* the same length, hence runtime check */
MaxName = malloc(max_name_length + 1);
ToLongName = malloc(max_name_length + 1 + 1); /* Name of maximum +1 length */
memset(MaxName, 'a', max_name_length);
MaxName[max_name_length] = '\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[max_name_length] = 'a';
ToLongName[max_name_length+1] = '\0';/* extend ToLongName by one too many */
ToLongPath[PATH_MAX - 1] = '/';
ToLongPath[PATH_MAX] = '\0'; /* inc ToLongPath by one */
}