xv6/usertests.c

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#include "types.h"
#include "stat.h"
#include "user.h"
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#include "fs.h"
#include "fcntl.h"
char buf[2048];
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char name[3];
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char *echo_args[] = { "echo", "ALL", "TESTS", "PASSED", 0 };
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char *cat_args[] = { "cat", "README", 0 };
int stdout = 1;
// simple file system tests
void
opentest(void)
{
int fd;
printf(stdout, "open test\n");
fd = open("echo", 0);
if(fd < 0){
printf(stdout, "open echo failed!\n");
exit();
}
close(fd);
fd = open("doesnotexist", 0);
if(fd >= 0){
printf(stdout, "open doesnotexist succeeded!\n");
exit();
}
printf(stdout, "open test ok\n");
}
void
writetest(void)
{
int fd;
int i;
printf(stdout, "small file test\n");
fd = open("small", O_CREATE|O_RDWR);
if(fd >= 0){
printf(stdout, "creat small succeeded; ok\n");
} else {
printf(stdout, "error: creat small failed!\n");
exit();
}
for(i = 0; i < 100; i++) {
if(write(fd, "aaaaaaaaaa", 10) != 10) {
printf(stdout, "error: write aa %d new file failed\n", i);
exit();
}
if(write(fd, "bbbbbbbbbb", 10) != 10) {
printf(stdout, "error: write bb %d new file failed\n", i);
exit();
}
}
printf(stdout, "writes ok\n");
close(fd);
fd = open("small", O_RDONLY);
if(fd >= 0){
printf(stdout, "open small succeeded ok\n");
} else {
printf(stdout, "error: open small failed!\n");
exit();
}
i = read(fd, buf, 2000);
if(i == 2000) {
printf(stdout, "read succeeded ok\n");
} else {
printf(stdout, "read failed\n");
exit();
}
close(fd);
if(unlink("small") < 0) {
printf(stdout, "unlink small failed\n");
exit();
}
printf(stdout, "small file test ok\n");
}
void
writetest1(void)
{
int i, fd, n;
printf(stdout, "big files test\n");
fd = open("big", O_CREATE|O_RDWR);
if(fd < 0){
printf(stdout, "error: creat big failed!\n");
exit();
}
for(i = 0; i < MAXFILE; i++) {
((int*) buf)[0] = i;
if(write(fd, buf, 512) != 512) {
printf(stdout, "error: write big file failed\n", i);
exit();
}
}
close(fd);
fd = open("big", O_RDONLY);
if(fd < 0){
printf(stdout, "error: open big failed!\n");
exit();
}
n = 0;
for(;;) {
i = read(fd, buf, 512);
if(i == 0) {
if(n == MAXFILE - 1) {
printf(stdout, "read only %d blocks from big", n);
exit();
}
break;
} else if(i != 512) {
printf(stdout, "read failed %d\n", i);
exit();
}
if(((int*)buf)[0] != n) {
printf(stdout, "read content of block %d is %d\n",
n, ((int*)buf)[0]);
exit();
}
n++;
}
close(fd);
if(unlink("big") < 0) {
printf(stdout, "unlink big failed\n");
exit();
}
printf(stdout, "big files ok\n");
}
void
createtest(void)
{
int i, fd;
printf(stdout, "many creates, followed by unlink test\n");
name[0] = 'a';
name[2] = '\0';
for(i = 0; i < 52; i++) {
name[1] = '0' + i;
fd = open(name, O_CREATE|O_RDWR);
close(fd);
}
name[0] = 'a';
name[2] = '\0';
for(i = 0; i < 52; i++) {
name[1] = '0' + i;
unlink(name);
}
printf(stdout, "many creates, followed by unlink; ok\n");
}
void dirtest(void)
{
printf(stdout, "mkdir test\n");
if(mkdir("dir0") < 0) {
printf(stdout, "mkdir failed\n");
exit();
}
if(chdir("dir0") < 0) {
printf(stdout, "chdir dir0 failed\n");
exit();
}
if(chdir("..") < 0) {
printf(stdout, "chdir .. failed\n");
exit();
}
if(unlink("dir0") < 0) {
printf(stdout, "unlink dir0 failed\n");
exit();
}
printf(stdout, "mkdir test\n");
}
void
exectest(void)
{
printf(stdout, "exec test\n");
if(exec("echo", echo_args) < 0) {
printf(stdout, "exec echo failed\n");
exit();
}
}
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// simple fork and pipe read/write
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void
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pipe1(void)
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{
int fds[2], pid;
int seq = 0, i, n, cc, total;
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if(pipe(fds) != 0){
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printf(1, "pipe() failed\n");
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exit();
}
pid = fork();
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if(pid == 0){
close(fds[0]);
for(n = 0; n < 5; n++){
for(i = 0; i < 1033; i++)
buf[i] = seq++;
if(write(fds[1], buf, 1033) != 1033){
printf(1, "pipe1 oops 1\n");
exit();
}
}
exit();
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} else if(pid > 0){
close(fds[1]);
total = 0;
cc = 1;
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while((n = read(fds[0], buf, cc)) > 0){
for(i = 0; i < n; i++){
if((buf[i] & 0xff) != (seq++ & 0xff)){
printf(1, "pipe1 oops 2\n");
return;
}
}
total += n;
cc = cc * 2;
if(cc > sizeof(buf))
cc = sizeof(buf);
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}
if(total != 5 * 1033)
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printf(1, "pipe1 oops 3 total %d\n", total);
close(fds[0]);
wait();
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} else {
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printf(1, "fork() failed\n");
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exit();
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}
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printf(1, "pipe1 ok\n");
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}
// meant to be run w/ at most two CPUs
void
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preempt(void)
{
int pid1, pid2, pid3;
int pfds[2];
pid1 = fork();
if(pid1 == 0)
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for(;;)
;
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pid2 = fork();
if(pid2 == 0)
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for(;;)
;
pipe(pfds);
pid3 = fork();
if(pid3 == 0){
close(pfds[0]);
if(write(pfds[1], "x", 1) != 1)
printf(1, "preempt write error");
close(pfds[1]);
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for(;;)
;
}
close(pfds[1]);
if(read(pfds[0], buf, sizeof(buf)) != 1){
printf(1, "preempt read error");
return;
}
close(pfds[0]);
kill(pid1);
kill(pid2);
kill(pid3);
wait();
wait();
wait();
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printf(1, "preempt ok\n");
}
// try to find any races between exit and wait
void
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exitwait(void)
{
int i, pid;
for(i = 0; i < 100; i++){
pid = fork();
if(pid < 0){
printf(1, "fork failed\n");
return;
}
if(pid){
if(wait() != pid){
printf(1, "wait wrong pid\n");
return;
}
} else {
exit();
}
}
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printf(1, "exitwait ok\n");
}
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void
mem(void)
{
void *m1, *m2;
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int pid;
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if((pid = fork()) == 0){
m1 = 0;
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while((m2 = malloc(10001)) != 0) {
*(char**) m2 = m1;
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m1 = m2;
}
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while(m1) {
m2 = *(char**)m1;
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free(m1);
m1 = m2;
}
m1 = malloc(1024*20);
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if(m1 == 0) {
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printf(1, "couldn't allocate mem?!!\n");
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exit();
}
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free(m1);
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printf(1, "mem ok\n");
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exit();
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} else {
wait();
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}
}
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// More file system tests
// two processes write to the same file descriptor
// is the offset shared? does inode locking work?
void
sharedfd()
{
int fd, pid, i, n, nc, np;
char buf[10];
unlink("sharedfd");
fd = open("sharedfd", O_CREATE|O_RDWR);
if(fd < 0){
printf(1, "fstests: cannot open sharedfd for writing");
return;
}
pid = fork();
memset(buf, pid==0?'c':'p', sizeof(buf));
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for(i = 0; i < 1000; i++){
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if(write(fd, buf, sizeof(buf)) != sizeof(buf)){
printf(1, "fstests: write sharedfd failed\n");
break;
}
}
if(pid == 0)
exit();
else
wait();
close(fd);
fd = open("sharedfd", 0);
if(fd < 0){
printf(1, "fstests: cannot open sharedfd for reading\n");
return;
}
nc = np = 0;
while((n = read(fd, buf, sizeof(buf))) > 0){
for(i = 0; i < sizeof(buf); i++){
if(buf[i] == 'c')
nc++;
if(buf[i] == 'p')
np++;
}
}
close(fd);
unlink("sharedfd");
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if(nc == 10000 && np == 10000)
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printf(1, "sharedfd ok\n");
else
printf(1, "sharedfd oops %d %d\n", nc, np);
}
// two processes write two different files at the same
// time, to test block allocation.
void
twofiles()
{
int fd, pid, i, j, n, total;
char *fname;
printf(1, "twofiles test\n");
unlink("f1");
unlink("f2");
pid = fork();
if(pid < 0){
printf(1, "fork failed\n");
return;
}
fname = pid ? "f1" : "f2";
fd = open(fname, O_CREATE | O_RDWR);
if(fd < 0){
printf(1, "create failed\n");
exit();
}
memset(buf, pid?'p':'c', 512);
for(i = 0; i < 12; i++){
if((n = write(fd, buf, 500)) != 500){
printf(1, "write failed %d\n", n);
exit();
}
}
close(fd);
if(pid)
wait();
else
exit();
for(i = 0; i < 2; i++){
fd = open(i?"f1":"f2", 0);
total = 0;
while((n = read(fd, buf, sizeof(buf))) > 0){
for(j = 0; j < n; j++){
if(buf[j] != (i?'p':'c')){
printf(1, "wrong char\n");
exit();
}
}
total += n;
}
close(fd);
if(total != 12*500){
printf(1, "wrong length %d\n", total);
exit();
}
}
unlink("f1");
unlink("f2");
printf(1, "twofiles ok\n");
}
// two processes create and delete files in same directory
void
createdelete()
{
int pid, i, fd;
int n = 20;
char name[32];
printf(1, "createdelete test\n");
pid = fork();
if(pid < 0){
printf(1, "fork failed\n");
exit();
}
name[0] = pid ? 'p' : 'c';
name[2] = '\0';
for(i = 0; i < n; i++){
name[1] = '0' + i;
fd = open(name, O_CREATE | O_RDWR);
if(fd < 0){
printf(1, "create failed\n");
exit();
}
close(fd);
if(i > 0 && (i % 2 ) == 0){
name[1] = '0' + (i / 2);
if(unlink(name) < 0){
printf(1, "unlink failed\n");
exit();
}
}
}
if(pid==0)
exit();
// else
//exit();
for(i = 0; i < n; i++){
name[0] = 'p';
name[1] = '0' + i;
fd = open(name, 0);
if((i == 0 || i >= n/2) && fd < 0){
printf(1, "oops createdelete %s didn't exist\n", name);
exit();
} else if((i >= 1 && i < n/2) && fd >= 0){
printf(1, "oops createdelete %s did exist\n", name);
exit();
}
if(fd >= 0)
close(fd);
name[0] = 'c';
name[1] = '0' + i;
fd = open(name, 0);
if((i == 0 || i >= n/2) && fd < 0){
printf(1, "oops createdelete %s didn't exist\n", name);
exit();
} else if((i >= 1 && i < n/2) && fd >= 0){
printf(1, "oops createdelete %s did exist\n", name);
exit();
}
if(fd >= 0)
close(fd);
}
for(i = 0; i < n; i++){
name[0] = 'p';
name[1] = '0' + i;
unlink(name);
name[0] = 'c';
unlink(name);
}
printf(1, "createdelete ok\n");
}
// can I unlink a file and still read it?
void
unlinkread()
{
int fd, fd1;
printf(1, "unlinkread test\n");
fd = open("unlinkread", O_CREATE | O_RDWR);
if(fd < 0){
printf(1, "create unlinkread failed\n");
exit();
}
write(fd, "hello", 5);
close(fd);
fd = open("unlinkread", O_RDWR);
if(fd < 0){
printf(1, "open unlinkread failed\n");
exit();
}
if(unlink("unlinkread") != 0){
printf(1, "unlink unlinkread failed\n");
exit();
}
fd1 = open("unlinkread", O_CREATE | O_RDWR);
write(fd1, "yyy", 3);
close(fd1);
if(read(fd, buf, sizeof(buf)) != 5){
printf(1, "unlinkread read failed");
exit();
}
if(buf[0] != 'h'){
printf(1, "unlinkread wrong data\n");
exit();
}
if(write(fd, buf, 10) != 10){
printf(1, "unlinkread write failed\n");
exit();
}
close(fd);
unlink("unlinkread");
printf(1, "unlinkread ok\n");
}
void
linktest()
{
int fd;
printf(1, "linktest\n");
unlink("lf1");
unlink("lf2");
fd = open("lf1", O_CREATE|O_RDWR);
if(fd < 0){
printf(1, "create lf1 failed\n");
exit();
}
if(write(fd, "hello", 5) != 5){
printf(1, "write lf1 failed\n");
exit();
}
close(fd);
if(link("lf1", "lf2") < 0){
printf(1, "link lf1 lf2 failed\n");
exit();
}
unlink("lf1");
if(open("lf1", 0) >= 0){
printf(1, "unlinked lf1 but it is still there!\n");
exit();
}
fd = open("lf2", 0);
if(fd < 0){
printf(1, "open lf2 failed\n");
exit();
}
if(read(fd, buf, sizeof(buf)) != 5){
printf(1, "read lf2 failed\n");
exit();
}
close(fd);
if(link("lf2", "lf2") >= 0){
printf(1, "link lf2 lf2 succeeded! oops\n");
exit();
}
unlink("lf2");
if(link("lf2", "lf1") >= 0){
printf(1, "link non-existant succeeded! oops\n");
exit();
}
if(link(".", "lf1") >= 0){
printf(1, "link . lf1 succeeded! oops\n");
exit();
}
printf(1, "linktest ok\n");
}
// test concurrent create of the same file
void
concreate()
{
char file[3];
int i, pid, n, fd;
char fa[40];
struct {
unsigned short inum;
char name[14];
} de;
printf(1, "concreate test\n");
file[0] = 'C';
file[2] = '\0';
for(i = 0; i < 40; i++){
file[1] = '0' + i;
unlink(file);
pid = fork();
if(pid && (i % 3) == 1){
link("C0", file);
} else if(pid == 0 && (i % 5) == 1){
link("C0", file);
} else {
fd = open(file, O_CREATE | O_RDWR);
if(fd < 0){
printf(1, "concreate create %s failed\n", file);
exit();
}
close(fd);
}
if(pid == 0)
exit();
else
wait();
}
memset(fa, 0, sizeof(fa));
fd = open(".", 0);
n = 0;
while(read(fd, &de, sizeof(de)) > 0){
if(de.inum == 0)
continue;
if(de.name[0] == 'C' && de.name[2] == '\0'){
i = de.name[1] - '0';
if(i < 0 || i >= sizeof(fa)){
printf(1, "concreate weird file %s\n", de.name);
exit();
}
if(fa[i]){
printf(1, "concreate duplicate file %s\n", de.name);
exit();
}
fa[i] = 1;
n++;
}
}
close(fd);
if(n != 40){
printf(1, "concreate not enough files in directory listing\n");
exit();
}
for(i = 0; i < 40; i++){
file[1] = '0' + i;
unlink(file);
}
printf(1, "concreate ok\n");
}
// directory that uses indirect blocks
void
bigdir()
{
int i, fd;
char name[10];
printf(1, "bigdir test\n");
unlink("bd");
fd = open("bd", O_CREATE);
if(fd < 0){
printf(1, "bigdir create failed\n");
exit();
}
close(fd);
for(i = 0; i < 500; i++){
name[0] = 'x';
name[1] = '0' + (i / 64);
name[2] = '0' + (i % 64);
name[3] = '\0';
if(link("bd", name) != 0){
printf(1, "bigdir link failed\n");
exit();
}
}
unlink("bd");
for(i = 0; i < 500; i++){
name[0] = 'x';
name[1] = '0' + (i / 64);
name[2] = '0' + (i % 64);
name[3] = '\0';
if(unlink(name) != 0){
printf(1, "bigdir unlink failed");
exit();
}
}
printf(1, "bigdir ok\n");
}
void
subdir()
{
int fd, cc;
printf(1, "subdir test\n");
unlink("ff");
if(mkdir("dd") != 0){
printf(1, "subdir mkdir dd failed\n");
exit();
}
fd = open("dd/ff", O_CREATE | O_RDWR);
if(fd < 0){
printf(1, "create dd/ff failed\n");
exit();
}
write(fd, "ff", 2);
close(fd);
if(mkdir("/dd/dd") != 0){
printf(1, "subdir mkdir dd/dd failed\n");
exit();
}
fd = open("dd/dd/ff", O_CREATE | O_RDWR);
if(fd < 0){
printf(1, "create dd/dd/ff failed\n");
exit();
}
write(fd, "FF", 2);
close(fd);
fd = open("dd/dd/../ff", 0);
if(fd < 0){
printf(1, "open dd/dd/../ff failed\n");
exit();
}
cc = read(fd, buf, sizeof(buf));
if(cc != 2 || buf[0] != 'f'){
printf(1, "dd/dd/../ff wrong content\n");
exit();
}
close(fd);
if(link("dd/dd/ff", "dd/dd/ffff") != 0){
printf(1, "link dd/dd/ff dd/dd/ffff failed\n");
exit();
}
if(unlink("dd/dd/ff") != 0){
printf(1, "unlink dd/dd/ff failed\n");
exit();
}
if(chdir("dd") != 0){
printf(1, "chdir dd failed\n");
exit();
}
if(chdir("dd/../../dd") != 0){
printf(1, "chdir dd/../../dd failed\n");
exit();
}
if(chdir("./..") != 0){
printf(1, "chdir ./.. failed\n");
exit();
}
fd = open("dd/dd/ffff", 0);
if(fd < 0){
printf(1, "open dd/dd/ffff failed\n");
exit();
}
if(read(fd, buf, sizeof(buf)) != 2){
printf(1, "read dd/dd/ffff wrong len\n");
exit();
}
close(fd);
if(open("dd/dd/ff", 0) >= 0){
printf(1, "open dd/dd/ff succeeded!\n");
exit();
}
if(open("dd/ff/ff", O_CREATE|O_RDWR) >= 0){
printf(1, "create dd/ff/ff succeeded!\n");
exit();
}
if(open("dd/xx/ff", O_CREATE|O_RDWR) >= 0){
printf(1, "create dd/xx/ff succeeded!\n");
exit();
}
if(open("dd", O_CREATE) >= 0){
printf(1, "create dd succeeded!\n");
exit();
}
if(open("dd", O_RDWR) >= 0){
printf(1, "open dd rdwr succeeded!\n");
exit();
}
if(open("dd", O_WRONLY) >= 0){
printf(1, "open dd wronly succeeded!\n");
exit();
}
if(link("dd/ff/ff", "dd/dd/xx") == 0){
printf(1, "link dd/ff/ff dd/dd/xx succeeded!\n");
exit();
}
if(link("dd/xx/ff", "dd/dd/xx") == 0){
printf(1, "link dd/xx/ff dd/dd/xx succeeded!\n");
exit();
}
if(link("dd/ff", "dd/dd/ffff") == 0){
printf(1, "link dd/ff dd/dd/ffff succeeded!\n");
exit();
}
if(mkdir("dd/ff/ff") == 0){
printf(1, "mkdir dd/ff/ff succeeded!\n");
exit();
}
if(mkdir("dd/xx/ff") == 0){
printf(1, "mkdir dd/xx/ff succeeded!\n");
exit();
}
if(mkdir("dd/dd/ffff") == 0){
printf(1, "mkdir dd/dd/ffff succeeded!\n");
exit();
}
if(unlink("dd/xx/ff") == 0){
printf(1, "unlink dd/xx/ff succeeded!\n");
exit();
}
if(unlink("dd/ff/ff") == 0){
printf(1, "unlink dd/ff/ff succeeded!\n");
exit();
}
if(chdir("dd/ff") == 0){
printf(1, "chdir dd/ff succeeded!\n");
exit();
}
if(chdir("dd/xx") == 0){
printf(1, "chdir dd/xx succeeded!\n");
exit();
}
if(unlink("dd/dd/ffff") != 0){
printf(1, "unlink dd/dd/ff failed\n");
exit();
}
if(unlink("dd/ff") != 0){
printf(1, "unlink dd/ff failed\n");
exit();
}
// unlink dd/dd
// unlink dd
printf(1, "subdir ok\n");
}
void
bigfile()
{
int fd, i, total, cc;
printf(1, "bigfile test\n");
unlink("bigfile");
fd = open("bigfile", O_CREATE | O_RDWR);
if(fd < 0){
printf(1, "cannot create bigfile");
exit();
}
for(i = 0; i < 20; i++){
memset(buf, i, 600);
if(write(fd, buf, 600) != 600){
printf(1, "write bigfile failed\n");
exit();
}
}
close(fd);
fd = open("bigfile", 0);
if(fd < 0){
printf(1, "cannot open bigfile\n");
exit();
}
total = 0;
for(i = 0; ; i++){
cc = read(fd, buf, 300);
if(cc < 0){
printf(1, "read bigfile failed\n");
exit();
}
if(cc == 0)
break;
if(cc != 300){
printf(1, "short read bigfile\n");
exit();
}
if(buf[0] != i/2 || buf[299] != i/2){
printf(1, "read bigfile wrong data\n");
exit();
}
total += cc;
}
close(fd);
if(total != 20*600){
printf(1, "read bigfile wrong total\n");
exit();
}
unlink("bigfile");
printf(1, "bigfile test ok\n");
}
void
fourteen()
{
int fd;
printf(1, "fourteen test\n");
if(mkdir("12345678901234") != 0){
printf(1, "mkdir 12345678901234 failed\n");
exit();
}
if(mkdir("12345678901234/123456789012345") != 0){
printf(1, "mkdir 12345678901234/123456789012345 failed\n");
exit();
}
fd = open("123456789012345/123456789012345/123456789012345", O_CREATE);
if(fd < 0){
printf(1, "create 123456789012345/123456789012345/123456789012345 failed\n");
exit();
}
close(fd);
fd = open("12345678901234/12345678901234/12345678901234", 0);
if(fd < 0){
printf(1, "open 12345678901234/12345678901234/12345678901234 failed\n");
exit();
}
close(fd);
if(mkdir("12345678901234/12345678901234") == 0){
printf(1, "mkdir 12345678901234/12345678901234 succeeded!\n");
exit();
}
if(mkdir("123456789012345/12345678901234") == 0){
printf(1, "mkdir 12345678901234/123456789012345 succeeded!\n");
exit();
}
printf(1, "fourteen ok\n");
}
int
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main(int argc, char *argv[])
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{
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printf(1, "usertests starting\n");
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if(open("usertests.ran", 0) >= 0){
printf(1, "already ran user tests -- rebuild fs.img\n");
exit();
}
close(open("usertests.ran", O_CREATE));
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opentest();
writetest();
writetest1();
createtest();
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mem();
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pipe1();
preempt();
exitwait();
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fourteen();
bigfile();
subdir();
bigdir(); // slow
concreate();
linktest();
unlinkread();
createdelete();
twofiles();
sharedfd();
exectest();
exit();
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}