Minix2.0/src/test/test17.c
/* Comment on usage and program: ark!/mnt/rene/prac/os/unix/comment.changes */
/* "const.h", created by Rene Montsma and Menno Wilcke */
#include <sys/types.h> /* type defs */
#include <sys/stat.h> /* struct stat */
#include <sys/wait.h>
#include <errno.h> /* the error-numbers */
#include <fcntl.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <utime.h>
#include <stdio.h>
#define NOCRASH 1 /* test11(), 2nd pipe */
#define PDPNOHANG 1 /* test03(), write_standards() */
#define MAXERR 2
#define USER_ID 12
#define GROUP_ID 1
#define FF 3 /* first free filedes. */
#define USER 1 /* uid */
#define GROUP 0 /* gid */
#define ARSIZE 256 /* array size */
#define PIPESIZE 3584 /* max number of bytes to be written on pipe */
#define MAXOPEN 17 /* maximum number of extra open files */
#define MAXLINK 0177 /* maximum number of links per file */
#define LINKCOUNT 5
#define MASK 0777 /* selects lower nine bits */
#define END_FILE 0 /* returned by read-call at eof */
#define OK 0
#define FAIL -1
#define R 0 /* read (open-call) */
#define W 1 /* write (open-call) */
#define RW 2 /* read & write (open-call) */
#define RWX 7 /* read & write & execute (mode) */
#define NIL ""
#define UMASK "umask"
#define CREAT "creat"
#define WRITE "write"
#define READ "read"
#define OPEN "open"
#define CLOSE "close"
#define LSEEK "lseek"
#define ACCESS "access"
#define CHDIR "chdir"
#define CHMOD "chmod"
#define LINK "link"
#define UNLINK "unlink"
#define PIPE "pipe"
#define STAT "stat"
#define FSTAT "fstat"
#define DUP "dup"
#define UTIME "utime"
int errct;
char *file[];
char *fnames[];
char *dir[];
/* "decl.c", created by Rene Montsma and Menno Wilcke */
/* Used in open_alot, close_alot */
char *file[20] = {"f0", "f1", "f2", "f3", "f4", "f5", "f6",
"f7", "f8", "f9", "f10", "f11", "f12", "f13",
"f14", "f15", "f16", "f17", "f18", "f19"}, *fnames[8] = {"---", "--x", "-w-", "-wx", "r--",
"r-x", "rw-", "rwx"}, *dir[8] = {"d---", "d--x", "d-w-", "d-wx", "dr--", "dr-x",
"drw-", "drwx"};
/* Needed for easy creating and deleting of directories */
/* "test.c", created by Rene Montsma and Menno Wilcke */
_PROTOTYPE(int main, (int argc, char *argv []));
_PROTOTYPE(void test, (int mask));
_PROTOTYPE(void test01, (void));
_PROTOTYPE(void test02, (void));
_PROTOTYPE(void test08, (void));
_PROTOTYPE(void test09, (void));
_PROTOTYPE(void test10, (void));
_PROTOTYPE(int link_alot, (char *bigboss));
_PROTOTYPE(int unlink_alot, (int number));
_PROTOTYPE(void get_new, (char name []));
_PROTOTYPE(void test11, (void));
_PROTOTYPE(void comp_stats, (struct stat *stbf1, struct stat *stbf2));
_PROTOTYPE(void comp_inodes, (int m, int m1));
_PROTOTYPE(void e, (char *string));
_PROTOTYPE(void nlcr, (void));
_PROTOTYPE(void str, (char *s));
_PROTOTYPE(void err, (int number, char *scall, char *name));
_PROTOTYPE(void make_and_fill_dirs, (void));
_PROTOTYPE(void put_file_in_dir, (char *dirname, int mode));
_PROTOTYPE(void init_array, (char *a));
_PROTOTYPE(void clear_array, (char *b));
_PROTOTYPE(int comp_array, (char *a, char *b, int range));
_PROTOTYPE(void try_close, (int filedes, char *name));
_PROTOTYPE(void try_unlink, (char *fname));
_PROTOTYPE(void Remove, (int fdes, char *fname));
_PROTOTYPE(int get_mode, (char *name));
_PROTOTYPE(void check, (char *scall, int number));
_PROTOTYPE(void put, (int nr));
_PROTOTYPE(int open_alot, (void));
_PROTOTYPE(int close_alot, (int number));
_PROTOTYPE(void clean_up_the_mess, (void));
_PROTOTYPE(void chmod_8_dirs, (int sw));
_PROTOTYPE(void quit, (void));
/*****************************************************************************
* TEST *
****************************************************************************/
int main(argc, argv)
int argc;
char *argv[];
{
int n, mask;
sync();
if (geteuid() == 0 || getuid() == 0) {
printf("Test 17 cannot run as root; test aborted\n");
exit(1);
}
system("rm -rf DIR_18; mkdir DIR_18");
chdir("DIR_18");
mask = (argc == 2 ? atoi(argv[1]) : 0xFFFF);
if (fork()) {
printf("Test 17 ");
fflush(stdout);
wait(&n);
clean_up_the_mess();
quit();
} else {
test(mask);
exit(0);
}
return(-1); /* impossible */
}
void test(mask)
int mask;
{
umask(0); /* not honest, but i always forget */
if (mask & 00001) test01();
if (mask & 00002) make_and_fill_dirs();
if (mask & 00004) test02();
if (mask & 00010) test08();
if (mask & 00020) test09();
if (mask & 00040) test10();
if (mask & 00100) test11();
umask(022);
} /* test */
/* "t1.c" created by Rene Montsma and Menno Wilcke */
/*****************************************************************************
* test UMASK *
****************************************************************************/
void test01()
{
int oldvalue, newvalue, tempvalue;
int nr;
if ((oldvalue = umask(0777)) != 0) err(0, UMASK, NIL);
/* Special test: only the lower 9 bits (protection bits) may part- *
* icipate. ~0777 means: 111 000 000 000. Giving this to umask must*
* not change any value. */
if ((newvalue = umask(~0777)) != 0777) err(1, UMASK, "illegal");
if (oldvalue == newvalue) err(11, UMASK, "not change mask");
if ((tempvalue = umask(0)) != 0) err(2, UMASK, "values");
/* Now test all possible modes of umask on a file */
for (newvalue = MASK; newvalue >= 0; newvalue -= 0111) {
tempvalue = umask(newvalue);
if (tempvalue != oldvalue) {
err(1, UMASK, "illegal");
break; /* no use trying more */
} else if ((nr = creat("file01", 0777)) < 0)
err(5, CREAT, "'file01'");
else {
try_close(nr, "'file01'");
if (get_mode("file01") != (MASK & ~newvalue))
err(7, UMASK, "mode computed");
try_unlink("file01");
}
oldvalue = newvalue;
}
/* The loop has terminated with umask(0) */
if ((tempvalue = umask(0)) != 0)
err(7, UMASK, "umask may influence rest of tests!");
} /* test01 */
/*****************************************************************************
* test CREAT *
****************************************************************************/
void test02()
{
int n, n1, mode;
char a[ARSIZE], b[ARSIZE];
struct stat stbf1;
mode = 0;
/* Create twenty files, check filedes */
for (n = 0; n < MAXOPEN; n++) {
if (creat(file[n], mode) != FF + n)
err(13, CREAT, file[n]);
else {
if (get_mode(file[n]) != mode)
err(7, CREAT, "mode set while creating many files");
/* Change mode of file to standard mode, we want to *
* use a lot (20) of files to be opened later, see *
* open_alot(), close_alot(). */
if (chmod(file[n], 0700) != OK) err(5, CHMOD, file[n]);
}
mode = (mode + 0100) % 01000;
}
/* Already twenty files opened; opening another has to fail */
if (creat("file02", 0777) != FAIL)
err(9, CREAT, "created");
else
check(CREAT, EMFILE);
/* Close all files: seems blunt, but it isn't because we've *
* checked all fd's already */
if ((n = close_alot(MAXOPEN)) < MAXOPEN) err(5, CLOSE, "MAXOPEN files");
/* Creat 1 file twice; check */
if ((n = creat("file02", 0777)) < 0)
err(5, CREAT, "'file02'");
else {
init_array(a);
if (write(n, a, ARSIZE) != ARSIZE) err(1, WRITE, "bad");
if ((n1 = creat("file02", 0755)) < 0) /* receate 'file02' */
err(5, CREAT, "'file02' (2nd time)");
else {
/* Fd should be at the top after recreation */
if (lseek(n1, 0L, SEEK_END) != 0)
err(11, CREAT, "not truncate file by recreation");
else {
/* Try to write on recreated file */
clear_array(b);
if (lseek(n1, 0L, SEEK_SET) != 0)
err(5, LSEEK, "to top of 2nd fd 'file02'");
if (write(n1, a, ARSIZE) != ARSIZE)
err(1, WRITE, "(2) bad");
/* In order to read we've to close and open again */
try_close(n1, "'file02' (2nd creation)");
if ((n1 = open("file02", RW)) < 0)
err(5, OPEN, "'file02' (2nd recreation)");
/* Continue */
if (lseek(n1, 0L, SEEK_SET) != 0)
err(5, LSEEK, "to top 'file02'(2nd fd) (2)");
if (read(n1, b, ARSIZE) != ARSIZE)
err(1, READ, "wrong");
if (comp_array(a, b, ARSIZE) != OK) err(11, CREAT,
"not really truncate file by recreation");
}
if (get_mode("file02") != 0777)
err(11, CREAT, "not maintain mode by recreation");
try_close(n1, "recreated 'file02'");
}
Remove(n, "file02");
}
/* Give 'creat' wrong input: dir not searchable */
if (creat("drw-/file02", 0777) != FAIL)
err(4, CREAT, "'drw-'");
else
check(CREAT, EACCES);
/* Dir not writable */
if (creat("dr-x/file02", 0777) != FAIL)
err(12, CREAT, "'dr-x/file02'");
else
check(CREAT, EACCES);
/* File not writable */
if (creat("drwx/r-x", 0777) != FAIL)
err(11, CREAT, "recreate non-writable file");
else
check(CREAT, EACCES);
/* Try to creat a dir */
if ((n = creat("dir", 040777)) != FAIL) {
if (fstat(n, &stbf1) != OK)
err(5, FSTAT, "'dir'");
else if (stbf1.st_mode != (mode_t) 0100777)
/* cast because mode is negative :-( */
err(11, CREAT, "'creat' a new directory");
Remove(n, "dir");
}
/* We don't consider it to be a bug when creat * does not accept
* tricky modes */
/* File is an existing dir */
if (creat("drwx", 0777) != FAIL)
err(11, CREAT, "create an existing dir!");
else
check(CREAT, EISDIR);
} /* test02 */
void test08()
{
/* Test chdir to searchable dir */
if (chdir("drwx") != OK)
err(5, CHDIR, "to accessible dir");
else if (chdir("..") != OK)
err(11, CHDIR, "not return to '..'");
/* Check the chdir(".") and chdir("..") mechanism */
if (chdir("drwx") != OK)
err(5, CHDIR, "to 'drwx'");
else {
if (chdir(".") != OK) err(5, CHDIR, "to working dir (.)");
/* If we still are in 'drwx' , we should be able to access *
* file 'rwx'. */
if (access("rwx", 0) != OK) err(5, CHDIR, "rightly to '.'");
/* Try to return to previous dir ('/' !!) */
if (chdir("././../././d--x/../d--x/././..") != OK)
err(5, CHDIR, "to motherdir (..)");
/* Check whether we are back in '/' */
if (chdir("d--x") != OK) err(5, CHDIR, "rightly to a '..'");
}
/* Return to '..' */
if (chdir("..") != OK) err(5, CHDIR, "to '..'");
if (chdir("././././drwx") != OK)
err(11, CHDIR, "not follow a path");
else if (chdir("././././..") != OK)
err(11, CHDIR, "not return to path");
/* Try giving chdir wrong parameters */
if (chdir("drwx/rwx") != FAIL)
err(11, CHDIR, "chdir to a file");
else
check(CHDIR, ENOTDIR);
if (chdir("drw-") != FAIL)
err(4, CHDIR, "'/drw-'");
else
check(CHDIR, EACCES);
/* To be sure: return to root */
/* If (chdir("/") != OK) err(5, CHDIR, "to '/' (2nd time)"); */
} /* test08 */
/* New page */
/*****************************************************************************
* test CHMOD *
****************************************************************************/
void test09()
{
int n;
/* Prepare file09 */
if ((n = creat("drwx/file09", 0644)) != FF) err(5, CREAT, "'drwx/file09'");
try_close(n, "'file09'");
/* Try to chmod a file, check and restore old values, check */
if (chmod("drwx/file09", 0700) != OK)
err(5, CHMOD, "'drwx/file09'"); /* set rwx */
else {
/* Check protection */
if (get_mode("drwx/file09") != 0700) err(7, CHMOD, "mode");
/* Test if chmod accepts just filenames too */
if (chdir("drwx") != OK)
err(5, CHDIR, "to '/drwx'");
else if (chmod("file09", 0177) != OK) /* restore oldies */
err(5, CHMOD, "'h1'");
else
/* Check if value has been restored */
if (get_mode("../drwx/file09") != 0177)
err(7, CHMOD, "restored mode");
}
/* Try setuid and setgid */
if ((chmod("file09", 04777) != OK) || (get_mode("file09") != 04777))
err(11, CHMOD, "not set uid-bit");
if ((chmod("file09", 02777) != OK) || (get_mode("file09") != 02777))
err(11, CHMOD, "not set gid-bit");
/* Remove testfile */
try_unlink("file09");
if (chdir("..") != OK) err(5, CHDIR, "to '..'");
/* Try to chmod directory */
if (chmod("d---", 0777) != OK)
err(5, CHMOD, "dir 'd---'");
else {
if (get_mode("d---") != 0777) err(7, CHMOD, "protection value");
if (chmod("d---", 0000) != OK) err(5, CHMOD, "dir 'a' 2nd time");
/* Check if old value has been restored */
if (get_mode("d---") != 0000)
err(7, CHMOD, "restored protection value");
}
/* Try to make chmod failures */
/* We still are in dir root */
/* Wrong filename */
if (chmod("non-file", 0777) != FAIL)
err(3, CHMOD, NIL);
else
check(CHMOD, ENOENT);
} /* test 09 */
/* New page */
/* "t4.c", created by Rene Montsma and Menno Wilcke */
/*****************************************************************************
* test LINK/UNLINK *
****************************************************************************/
void test10()
{
int n, n1;
char a[ARSIZE], b[ARSIZE], *f, *lf;
f = "file10";
lf = "linkfile10";
if ((n = creat(f, 0702)) != FF) /* no other open files */
err(13, CREAT, f);
else {
/* Now link correctly */
if (link(f, lf) != OK)
err(5, LINK, lf);
else if ((n1 = open(lf, RW)) < 0)
err(5, OPEN, "'linkfile10'");
else {
init_array(a);
clear_array(b);
/* Write on 'file10' means being able to * read
* through linked filedescriptor */
if (write(n, a, ARSIZE) != ARSIZE) err(1, WRITE, "bad");
if (read(n1, b, ARSIZE) != ARSIZE) err(1, READ, "bad");
if (comp_array(a, b, ARSIZE) != OK) err(8, "r/w", NIL);
/* Clean up: unlink and close (twice): */
Remove(n, f);
try_close(n1, "'linkfile10'");
/* Check if "linkfile" exists and the info * on it
* is correct ('file' has been deleted) */
if ((n1 = open(lf, R)) < 0)
err(5, OPEN, "'linkfile10'");
else {
/* See if 'linkfile' still contains 0..511 ? */
clear_array(b);
if (read(n1, b, ARSIZE) != ARSIZE)
err(1, READ, "bad");
if (comp_array(a, b, ARSIZE) != OK)
err(8, "r/w", NIL);
try_close(n1, "'linkfile10' 2nd time");
try_unlink(lf);
}
}
}
/* Try if unlink fails with incorrect parameters */
/* File does not exist: */
if (unlink("non-file") != FAIL)
err(2, UNLINK, "name");
else
check(UNLINK, ENOENT);
/* Dir can't be written */
if (unlink("dr-x/rwx") != FAIL)
err(11, UNLINK, "could unlink in non-writable dir.");
else
check(UNLINK, EACCES);
/* Try to unlink a dir being user */
if (unlink("drwx") != FAIL)
err(11, UNLINK, "unlink dir's as user");
else
check(UNLINK, EPERM);
/* Try giving link wrong input */
/* First try if link fails with incorrect parameters * name1 does not
* exist. */
if (link("non-file", "linkfile") != FAIL)
err(2, LINK, "1st name");
else
check(LINK, ENOENT);
/* Name2 exists already */
if (link("drwx/rwx", "drwx/rw-") != FAIL)
err(2, LINK, "2nd name");
else
check(LINK, EEXIST);
/* Directory of name2 not writable: */
if (link("drwx/rwx", "dr-x/linkfile") != FAIL)
err(11, LINK, "link non-writable file");
else
check(LINK, EACCES);
/* Try to link a dir, being a user */
if (link("drwx", "linkfile") != FAIL)
err(11, LINK, "link a dir without superuser!");
else
check(LINK, EPERM);
/* File has too many links */
if ((n = link_alot("drwx/rwx")) != LINKCOUNT - 1) /* file already has one
* link */
err(5, LINK, "many files");
if (unlink_alot(n) != n) err(5, UNLINK, "all linked files");
} /* test10 */
int link_alot(bigboss)
char *bigboss;
{
int i;
static char employee[6] = "aaaaa";
/* Every file has already got 1 link, so link 0176 times */
for (i = 1; i < LINKCOUNT; i++) {
if (link(bigboss, employee) != OK)
break;
else
get_new(employee);
}
return(i - 1); /* number of linked files */
} /* link_alot */
int unlink_alot(number)
int number; /* number of files to be unlinked */
{
int j;
static char employee[6] = "aaaaa";
for (j = 0; j < number; j++) {
if (unlink(employee) != OK)
break;
else
get_new(employee);
}
return(j); /* return number of unlinked files */
} /* unlink_alot */
void get_new(name)
char name[];
/* Every call changes string 'name' to a string alphabetically *
* higher. Start with "aaaaa", next value: "aaaab" . *
* N.B. after "aaaaz" comes "aaabz" and not "aaaba" (not needed). *
* The last possibility will be "zzzzz". *
* Total # possibilities: 26+25*4 = 126 = MAXLINK -1 (exactly needed) */
{
int i;
for (i = 4; i >= 0; i--)
if (name[i] != 'z') {
name[i]++;
break;
}
} /* get_new */
/* New page */
/*****************************************************************************
* test PIPE *
****************************************************************************/
void test11()
{
int n, fd[2];
char a[ARSIZE], b[ARSIZE];
if (pipe(fd) != OK)
err(13, PIPE, NIL);
else {
/* Try reading and writing on a pipe */
init_array(a);
clear_array(b);
if (write(fd[1], a, ARSIZE) != ARSIZE)
err(5, WRITE, "on pipe");
else if (read(fd[0], b, (ARSIZE / 2)) != (ARSIZE / 2))
err(5, READ, "on pipe (2nd time)");
else if (comp_array(a, b, (ARSIZE / 2)) != OK)
err(7, PIPE, "values read/written");
else if (read(fd[0], b, (ARSIZE / 2)) != (ARSIZE / 2))
err(5, READ, "on pipe 2");
else if (comp_array(&a[ARSIZE / 2], b, (ARSIZE / 2)) != OK)
err(7, PIPE, "pipe created");
/* Try to let the pipe make a mistake */
if (write(fd[0], a, ARSIZE) != FAIL)
err(11, WRITE, "write on fd[0]");
if (read(fd[1], b, ARSIZE) != FAIL) err(11, READ, "read on fd[1]");
try_close(fd[1], "'fd[1]'");
/* Now we shouldn't be able to read, because fd[1] has been closed */
if (read(fd[0], b, ARSIZE) != END_FILE) err(2, PIPE, "'fd[1]'");
try_close(fd[0], "'fd[0]'");
}
if (pipe(fd) < 0)
err(5, PIPE, "2nd time");
else {
/* Test lseek on a pipe: should fail */
if (write(fd[1], a, ARSIZE) != ARSIZE)
err(5, WRITE, "on pipe (2nd time)");
if (lseek(fd[1], 10L, SEEK_SET) != FAIL)
err(11, LSEEK, "lseek on a pipe");
else
check(PIPE, ESPIPE);
/* Eat half of the pipe: no writing should be possible */
try_close(fd[0], "'fd[0]' (2nd time)");
/* This makes UNIX crash: omit it if pdp or VAX */
#ifndef NOCRASH
if (write(fd[1], a, ARSIZE) != FAIL)
err(11, WRITE, "write on wrong pipe");
else
check(PIPE, EPIPE);
#endif
try_close(fd[1], "'fd[1]' (2nd time)");
}
/* BUG : *
* Here we planned to test if we could write 4K bytes on a pipe. *
* However, this was not possible to implement, because the whole *
* Monix system crashed when we tried to write more then 3584 bytes *
* (3.5K) on a pipe. That's why we try to write only 3.5K in the *
* folowing test. */
if (pipe(fd) < 0)
err(5, PIPE, "3rd time");
else {
for (n = 0; n < (PIPESIZE / ARSIZE); n++)
if (write(fd[1], a, ARSIZE) != ARSIZE)
err(5, WRITE, "on pipe (3rd time) 4K");
try_close(fd[1], "'fd[1]' (3rd time)");
for (n = 0; n < (PIPESIZE / ARSIZE); n++)
if (read(fd[0], b, ARSIZE) != ARSIZE)
err(5, READ, "from pipe (3rd time) 4K");
try_close(fd[0], "'fd[0]' (3rd time)");
}
/* Test opening a lot of files */
if ((n = open_alot()) != MAXOPEN) err(5, OPEN, "MAXOPEN files");
if (pipe(fd) != FAIL)
err(9, PIPE, "open");
else
check(PIPE, EMFILE);
if (close_alot(n) != n) err(5, CLOSE, "all opened files");
} /* test11 */
/* New page */
void comp_stats(stbf1, stbf2)
struct stat *stbf1, *stbf2;
{
if (stbf1->st_dev != stbf2->st_dev) err(7, "st/fst", "'dev'");
if (stbf1->st_ino != stbf2->st_ino) err(7, "st/fst", "'ino'");
if (stbf1->st_mode != stbf2->st_mode) err(7, "st/fst", "'mode'");
if (stbf1->st_nlink != stbf2->st_nlink) err(7, "st/fst", "'nlink'");
if (stbf1->st_uid != stbf2->st_uid) err(7, "st/fst", "'uid'");
if (stbf1->st_gid != stbf2->st_gid) err(7, "st/fst", "'gid'");
if (stbf1->st_rdev != stbf2->st_rdev) err(7, "st/fst", "'rdev'");
if (stbf1->st_size != stbf2->st_size) err(7, "st/fst", "'size'");
if (stbf1->st_atime != stbf2->st_atime) err(7, "st/fst", "'atime'");
if (stbf1->st_mtime != stbf2->st_mtime) err(7, "st/fst", "'mtime'");
} /* comp_stats */
/* New page */
/* "t5.c", created by Rene Montsma and Menno Wilcke */
void comp_inodes(m, m1)
int m, m1; /* twee filedes's */
{
struct stat stbf1, stbf2;
if (fstat(m, &stbf1) == OK)
if (fstat(m1, &stbf2) == OK) {
if (stbf1.st_ino != stbf2.st_ino)
err(7, DUP, "inode number");
} else
err(100, "comp_inodes", "cannot 'fstat' (m1)");
else
err(100, "comp_inodes", "cannot 'fstat' (m)");
} /* comp_inodes */
/* "support.c", created by Rene Montsma and Menno Wilcke */
/* Err, make_and_fill_dirs, init_array, clear_array, comp_array,
try_close, try_unlink, Remove, get_mode, check, open_alot,
close_alot, clean_up_the_mess.
*/
/***********************************************************************
* EXTENDED FIONS *
**********************************************************************/
/* First extended functions (i.e. not oldfashioned monixcalls.
e(), nlcr(), octal.*/
void e(string)
char *string;
{
printf("Error: %s ", string);
}
void nlcr()
{
printf("\n");
}
void str(s)
char *s;
{
printf(s);
}
/*****************************************************************************
* *
* ERR(or) messages *
* *
*****************************************************************************/
void err(number, scall, name)
/* Give nice error messages */
char *scall, *name;
int number;
{
errct++;
if (errct > MAXERR) {
printf("Too many errors; test aborted\n");
quit();
}
e("");
str("\t");
switch (number) {
case 0:
str(scall);
str(": illegal initial value.");
break;
case 1:
str(scall);
str(": ");
str(name);
str(" value returned.");
break;
case 2:
str(scall);
str(": accepting illegal ");
str(name);
str(".");
break;
case 3:
str(scall);
str(": accepting non-existing file.");
break;
case 4:
str(scall);
str(": could search non-searchable dir (");
str(name);
str(").");
break;
case 5:
str(scall);
str(": cannot ");
str(scall);
str(" ");
str(name);
str(".");
break;
case 7:
str(scall);
str(": incorrect ");
str(name);
str(".");
break;
case 8:
str(scall);
str(": wrong values.");
break;
case 9:
str(scall);
str(": accepting too many ");
str(name);
str(" files.");
break;
case 10:
str(scall);
str(": even a superuser can't do anything!");
break;
case 11:
str(scall);
str(": could ");
str(name);
str(".");
break;
case 12:
str(scall);
str(": could write in non-writable dir (");
str(name);
str(").");
break;
case 13:
str(scall);
str(": wrong filedes returned (");
str(name);
str(").");
break;
case 100:
str(scall); /* very common */
str(": ");
str(name);
str(".");
break;
default: str("errornumber does not exist!\n");
}
nlcr();
} /* err */
/*****************************************************************************
* *
* MAKE_AND_FILL_DIRS *
* *
*****************************************************************************/
void make_and_fill_dirs()
/* Create 8 dir.'s: "d---", "d--x", "d-w-", "d-wx", "dr--", "dr-x", *
* "drw-", "drwx". * Then create 8 files
* in "drwx", and some needed files in other dirs. */
{
int mode, i;
for (i = 0; i < 8; i++) {
mkdir(dir[i], 0700);
chown(dir[i], USER_ID, GROUP_ID);
}
setuid(USER_ID);
setgid(GROUP_ID);
for (mode = 0; mode < 8; mode++) put_file_in_dir("drwx", mode);
put_file_in_dir("d-wx", RWX);
put_file_in_dir("dr-x", RWX);
put_file_in_dir("drw-", RWX);
chmod_8_dirs(8); /* 8 means; 8 different modes */
} /* make_and_fill_dirs */
void put_file_in_dir(dirname, mode)
char *dirname;
int mode;
/* Fill directory 'dirname' with file with mode 'mode'. */
{
int nr;
if (chdir(dirname) != OK)
err(5, CHDIR, "to dirname (put_f_in_dir)");
else {
/* Creat the file */
if ((nr = creat(fnames[mode], mode * 0100)) < 0)
err(13, CREAT, fnames[mode]);
else
try_close(nr, fnames[mode]);
if (chdir("..") != OK)
err(5, CHDIR, "to previous dir (put_f_in_dir)");
}
} /* put_file_in_dir */
/*****************************************************************************
* *
* MISCELLANEOUS *
* *
*(all about arrays, 'try_close', 'try_unlink', 'Remove', 'get_mode')*
* *
*****************************************************************************/
void init_array(a)
char *a;
{
int i;
i = 0;
while (i++ < ARSIZE) *a++ = 'a' + (i % 26);
} /* init_array */
void clear_array(b)
char *b;
{
int i;
i = 0;
while (i++ < ARSIZE) *b++ = '0';
} /* clear_array */
int comp_array(a, b, range)
char *a, *b;
int range;
{
if ((range < 0) || (range > ARSIZE)) {
err(100, "comp_array", "illegal range");
return(FAIL);
} else {
while (range-- && (*a++ == *b++));
if (*--a == *--b)
return(OK);
else
return(FAIL);
}
} /* comp_array */
void try_close(filedes, name)
int filedes;
char *name;
{
if (close(filedes) != OK) err(5, CLOSE, name);
} /* try_close */
void try_unlink(fname)
char *fname;
{
if (unlink(fname) != 0) err(5, UNLINK, fname);
} /* try_unlink */
void Remove(fdes, fname)
int fdes;
char *fname;
{
try_close(fdes, fname);
try_unlink(fname);
} /* Remove */
int get_mode(name)
char *name;
{
struct stat stbf1;
if (stat(name, &stbf1) != OK) {
err(5, STAT, name);
return(stbf1.st_mode); /* return a mode which will cause *
* error in the calling function *
* (file/dir bit) */
} else
return(stbf1.st_mode & 07777); /* take last 4 bits */
} /* get_mode */
/*****************************************************************************
* *
* CHECK *
* *
*****************************************************************************/
void check(scall, number)
int number;
char *scall;
{
if (errno != number) {
e(NIL);
str("\t");
str(scall);
str(": bad errno-value: ");
put(errno);
str(" should have been: ");
put(number);
nlcr();
}
} /* check */
void put(nr)
int nr;
{
switch (nr) {
case 0: str("unused"); break;
case 1: str("EPERM"); break;
case 2: str("ENOENT"); break;
case 3: str("ESRCH"); break;
case 4: str("EINTR"); break;
case 5: str("EIO"); break;
case 6: str("ENXIO"); break;
case 7: str("E2BIG"); break;
case 8: str("ENOEXEC"); break;
case 9: str("EBADF"); break;
case 10: str("ECHILD"); break;
case 11: str("EAGAIN"); break;
case 12: str("ENOMEM"); break;
case 13: str("EACCES"); break;
case 14: str("EFAULT"); break;
case 15: str("ENOTBLK"); break;
case 16: str("EBUSY"); break;
case 17: str("EEXIST"); break;
case 18: str("EXDEV"); break;
case 19: str("ENODEV"); break;
case 20: str("ENOTDIR"); break;
case 21: str("EISDIR"); break;
case 22: str("EINVAL"); break;
case 23: str("ENFILE"); break;
case 24: str("EMFILE"); break;
case 25: str("ENOTTY"); break;
case 26: str("ETXTBSY"); break;
case 27: str("EFBIG"); break;
case 28: str("ENOSPC"); break;
case 29: str("ESPIPE"); break;
case 30: str("EROFS"); break;
case 31: str("EMLINK"); break;
case 32: str("EPIPE"); break;
case 33: str("EDOM"); break;
case 34: str("ERANGE"); break;
}
}
/*****************************************************************************
* *
* ALOT-functions *
* *
*****************************************************************************/
int open_alot()
{
int i;
for (i = 0; i < MAXOPEN; i++)
if (open(file[i], R) == FAIL) break;
if (i == 0) err(5, "open_alot", "at all");
return(i);
} /* open_alot */
int close_alot(number)
int number;
{
int i, count = 0;
if (number > MAXOPEN)
err(5, "close_alot", "accept this argument");
else
for (i = FF; i < number + FF; i++)
if (close(i) != OK) count++;
return(number - count); /* return number of closed files */
} /* close_alot */
/*****************************************************************************
* *
* CLEAN UP THE MESS *
* *
*****************************************************************************/
void clean_up_the_mess()
{
int i;
char dirname[6];
/* First remove 'a lot' files */
for (i = 0; i < MAXOPEN; i++) try_unlink(file[i]);
/* Unlink the files in dir 'drwx' */
if (chdir("drwx") != OK)
err(5, CHDIR, "to 'drwx'");
else {
for (i = 0; i < 8; i++) try_unlink(fnames[i]);
if (chdir("..") != OK) err(5, CHDIR, "to '..'");
}
/* Before unlinking files in some dirs, make them writable */
chmod_8_dirs(RWX);
/* Unlink files in other dirs */
try_unlink("d-wx/rwx");
try_unlink("dr-x/rwx");
try_unlink("drw-/rwx");
/* Unlink dirs */
for (i = 0; i < 8; i++) {
strcpy(dirname, "d");
strcat(dirname, fnames[i]);
/* 'dirname' contains the directoryname */
rmdir(dirname);
}
/* FINISH */
} /* clean_up_the_mess */
void chmod_8_dirs(sw)
int sw; /* if switch == 8, give all different
* mode,else the same mode */
{
int mode;
int i;
if (sw == 8)
mode = 0;
else
mode = sw;
for (i = 0; i < 8; i++) {
chmod(dir[i], 040000 + mode * 0100);
if (sw == 8) mode++;
}
}
void quit()
{
chdir("..");
system("rm -rf DIR*");
if (errct == 0) {
printf("ok\n");
exit(0);
} else {
printf("%d errors\n", errct);
exit(1);
}
}