2019 lines
38 KiB
C
2019 lines
38 KiB
C
#include "kernel/param.h"
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#include "kernel/types.h"
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#include "kernel/stat.h"
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#include "user/user.h"
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#include "kernel/fs.h"
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#include "kernel/fcntl.h"
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#include "kernel/syscall.h"
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#include "kernel/memlayout.h"
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#include "kernel/riscv.h"
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char buf[8192];
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char name[3];
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char *echoargv[] = { "echo", "ALL", "TESTS", "PASSED", 0 };
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int stdout = 1;
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// does chdir() call iput(p->cwd) in a transaction?
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void
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iputtest(void)
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{
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printf(stdout, "iput test\n");
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if(mkdir("iputdir") < 0){
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printf(stdout, "mkdir failed\n");
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exit();
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}
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if(chdir("iputdir") < 0){
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printf(stdout, "chdir iputdir failed\n");
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exit();
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}
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if(unlink("../iputdir") < 0){
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printf(stdout, "unlink ../iputdir failed\n");
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exit();
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}
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if(chdir("/") < 0){
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printf(stdout, "chdir / failed\n");
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exit();
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}
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printf(stdout, "iput test ok\n");
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}
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// does exit() call iput(p->cwd) in a transaction?
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void
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exitiputtest(void)
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{
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int pid;
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printf(stdout, "exitiput test\n");
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pid = fork();
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if(pid < 0){
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printf(stdout, "fork failed\n");
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exit();
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}
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if(pid == 0){
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if(mkdir("iputdir") < 0){
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printf(stdout, "mkdir failed\n");
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exit();
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}
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if(chdir("iputdir") < 0){
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printf(stdout, "child chdir failed\n");
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exit();
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}
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if(unlink("../iputdir") < 0){
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printf(stdout, "unlink ../iputdir failed\n");
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exit();
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}
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exit();
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}
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wait();
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printf(stdout, "exitiput test ok\n");
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}
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// does the error path in open() for attempt to write a
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// directory call iput() in a transaction?
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// needs a hacked kernel that pauses just after the namei()
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// call in sys_open():
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// if((ip = namei(path)) == 0)
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// return -1;
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// {
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// int i;
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// for(i = 0; i < 10000; i++)
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// yield();
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// }
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void
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openiputtest(void)
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{
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int pid;
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printf(stdout, "openiput test\n");
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if(mkdir("oidir") < 0){
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printf(stdout, "mkdir oidir failed\n");
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exit();
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}
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pid = fork();
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if(pid < 0){
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printf(stdout, "fork failed\n");
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exit();
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}
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if(pid == 0){
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int fd = open("oidir", O_RDWR);
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if(fd >= 0){
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printf(stdout, "open directory for write succeeded\n");
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exit();
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}
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exit();
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}
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sleep(1);
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if(unlink("oidir") != 0){
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printf(stdout, "unlink failed\n");
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exit();
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}
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wait();
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printf(stdout, "openiput test ok\n");
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}
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// simple file system tests
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void
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opentest(void)
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{
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int fd;
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printf(stdout, "open test\n");
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fd = open("echo", 0);
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if(fd < 0){
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printf(stdout, "open echo failed!\n");
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exit();
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}
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close(fd);
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fd = open("doesnotexist", 0);
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if(fd >= 0){
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printf(stdout, "open doesnotexist succeeded!\n");
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exit();
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}
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printf(stdout, "open test ok\n");
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}
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void
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writetest(void)
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{
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int fd;
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int i;
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printf(stdout, "small file test\n");
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fd = open("small", O_CREATE|O_RDWR);
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if(fd >= 0){
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printf(stdout, "creat small succeeded; ok\n");
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} else {
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printf(stdout, "error: creat small failed!\n");
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exit();
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}
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for(i = 0; i < 100; i++){
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if(write(fd, "aaaaaaaaaa", 10) != 10){
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printf(stdout, "error: write aa %d new file failed\n", i);
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exit();
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}
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if(write(fd, "bbbbbbbbbb", 10) != 10){
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printf(stdout, "error: write bb %d new file failed\n", i);
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exit();
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}
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}
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printf(stdout, "writes ok\n");
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close(fd);
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fd = open("small", O_RDONLY);
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if(fd >= 0){
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printf(stdout, "open small succeeded ok\n");
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} else {
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printf(stdout, "error: open small failed!\n");
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exit();
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}
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i = read(fd, buf, 2000);
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if(i == 2000){
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printf(stdout, "read succeeded ok\n");
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} else {
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printf(stdout, "read failed\n");
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exit();
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}
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close(fd);
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if(unlink("small") < 0){
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printf(stdout, "unlink small failed\n");
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exit();
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}
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printf(stdout, "small file test ok\n");
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}
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void
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writetest1(void)
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{
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int i, fd, n;
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printf(stdout, "big files test\n");
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fd = open("big", O_CREATE|O_RDWR);
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if(fd < 0){
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printf(stdout, "error: creat big failed!\n");
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exit();
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}
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for(i = 0; i < MAXFILE; i++){
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((int*)buf)[0] = i;
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if(write(fd, buf, 512) != 512){
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printf(stdout, "error: write big file failed\n", i);
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exit();
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}
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}
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close(fd);
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fd = open("big", O_RDONLY);
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if(fd < 0){
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printf(stdout, "error: open big failed!\n");
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exit();
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}
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n = 0;
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for(;;){
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i = read(fd, buf, 512);
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if(i == 0){
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if(n == MAXFILE - 1){
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printf(stdout, "read only %d blocks from big", n);
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exit();
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}
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break;
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} else if(i != 512){
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printf(stdout, "read failed %d\n", i);
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exit();
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}
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if(((int*)buf)[0] != n){
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printf(stdout, "read content of block %d is %d\n",
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n, ((int*)buf)[0]);
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exit();
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}
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n++;
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}
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close(fd);
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if(unlink("big") < 0){
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printf(stdout, "unlink big failed\n");
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exit();
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}
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printf(stdout, "big files ok\n");
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}
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void
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createtest(void)
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{
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int i, fd;
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printf(stdout, "many creates, followed by unlink test\n");
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name[0] = 'a';
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name[2] = '\0';
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for(i = 0; i < 52; i++){
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name[1] = '0' + i;
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fd = open(name, O_CREATE|O_RDWR);
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close(fd);
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}
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name[0] = 'a';
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name[2] = '\0';
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for(i = 0; i < 52; i++){
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name[1] = '0' + i;
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unlink(name);
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}
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printf(stdout, "many creates, followed by unlink; ok\n");
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}
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void dirtest(void)
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{
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printf(stdout, "mkdir test\n");
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if(mkdir("dir0") < 0){
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printf(stdout, "mkdir failed\n");
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exit();
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}
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if(chdir("dir0") < 0){
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printf(stdout, "chdir dir0 failed\n");
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exit();
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}
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if(chdir("..") < 0){
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printf(stdout, "chdir .. failed\n");
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exit();
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}
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if(unlink("dir0") < 0){
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printf(stdout, "unlink dir0 failed\n");
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exit();
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}
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printf(stdout, "mkdir test ok\n");
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}
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void
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exectest(void)
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{
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printf(stdout, "exec test\n");
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if(exec("echo", echoargv) < 0){
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printf(stdout, "exec echo failed\n");
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exit();
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}
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}
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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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{
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int fds[2], pid;
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int seq, 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();
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}
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pid = fork();
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seq = 0;
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if(pid == 0){
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close(fds[0]);
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for(n = 0; n < 5; n++){
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for(i = 0; i < 1033; i++)
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buf[i] = seq++;
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if(write(fds[1], buf, 1033) != 1033){
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printf(1, "pipe1 oops 1\n");
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exit();
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}
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}
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exit();
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} else if(pid > 0){
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close(fds[1]);
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total = 0;
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cc = 1;
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while((n = read(fds[0], buf, cc)) > 0){
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for(i = 0; i < n; i++){
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if((buf[i] & 0xff) != (seq++ & 0xff)){
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printf(1, "pipe1 oops 2\n");
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return;
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}
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}
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total += n;
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cc = cc * 2;
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if(cc > sizeof(buf))
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cc = sizeof(buf);
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}
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if(total != 5 * 1033){
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printf(1, "pipe1 oops 3 total %d\n", total);
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exit();
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}
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close(fds[0]);
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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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}
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// meant to be run w/ at most two CPUs
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void
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preempt(void)
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{
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int pid1, pid2, pid3;
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int pfds[2];
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printf(1, "preempt: ");
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pid1 = fork();
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if(pid1 < 0) {
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printf(1, "fork failed");
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exit();
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}
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if(pid1 == 0)
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for(;;)
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;
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pid2 = fork();
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if(pid2 < 0) {
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printf(1, "fork failed\n");
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exit();
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}
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if(pid2 == 0)
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for(;;)
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;
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pipe(pfds);
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pid3 = fork();
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if(pid3 < 0) {
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printf(1, "fork failed\n");
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exit();
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}
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if(pid3 == 0){
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close(pfds[0]);
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if(write(pfds[1], "x", 1) != 1)
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printf(1, "preempt write error");
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close(pfds[1]);
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for(;;)
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;
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}
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close(pfds[1]);
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if(read(pfds[0], buf, sizeof(buf)) != 1){
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printf(1, "preempt read error");
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return;
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}
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close(pfds[0]);
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printf(1, "kill... ");
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kill(pid1);
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kill(pid2);
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kill(pid3);
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printf(1, "wait... ");
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wait();
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wait();
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wait();
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printf(1, "preempt ok\n");
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}
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// try to find any races between exit and wait
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void
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exitwait(void)
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{
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int i, pid;
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printf(1, "exitwait test\n");
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for(i = 0; i < 100; i++){
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pid = fork();
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if(pid < 0){
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printf(1, "fork failed\n");
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exit();
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}
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if(pid){
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if(wait() != pid){
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printf(1, "wait wrong pid\n");
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exit();
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}
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} else {
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exit();
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}
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}
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printf(1, "exitwait ok\n");
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}
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// try to find races in the reparenting
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// code that handles a parent exiting
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// when it still has live children.
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void
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reparent(void)
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{
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int master_pid = getpid();
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printf(1, "reparent test\n");
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for(int i = 0; i < 100; i++){
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int pid = fork();
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if(pid < 0){
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printf(1, "fork failed\n");
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exit();
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}
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if(pid){
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if(wait() != pid){
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printf(1, "wait wrong pid\n");
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exit();
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}
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} else {
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int pid2 = fork();
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if(pid2 < 0){
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printf(1, "fork failed\n");
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kill(master_pid);
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exit();
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}
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if(pid2 == 0){
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exit();
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} else {
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exit();
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}
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}
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}
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printf(1, "reparent ok\n");
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}
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// what if two children exit() at the same time?
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void
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twochildren(void)
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{
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printf(1, "twochildren test\n");
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for(int i = 0; i < 1000; i++){
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int pid1 = fork();
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if(pid1 < 0){
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printf(1, "fork failed\n");
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exit();
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}
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if(pid1 == 0){
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exit();
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} else {
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int pid2 = fork();
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if(pid2 < 0){
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printf(1, "fork failed\n");
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exit();
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}
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if(pid2 == 0){
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exit();
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} else {
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wait();
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wait();
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}
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}
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}
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printf(1, "twochildren ok\n");
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}
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// concurrent forks to try to expose locking bugs.
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void
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forkfork(void)
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{
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int ppid = getpid();
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printf(1, "forkfork test\n");
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for(int i = 0; i < 2; i++){
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int pid = fork();
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if(pid < 0){
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printf(1, "fork failed");
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exit();
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}
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if(pid == 0){
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for(int j = 0; j < 200; j++){
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int pid1 = fork();
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if(pid1 < 0){
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printf(1, "fork failed\n");
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kill(ppid);
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exit();
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}
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if(pid1 == 0){
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exit();
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}
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wait();
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}
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exit();
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}
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}
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for(int i = 0; i < 2; i++){
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wait();
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}
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printf(1, "forkfork ok\n");
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}
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void
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forkforkfork(void)
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{
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printf(1, "forkforkfork test\n");
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unlink("stopforking");
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int pid = fork();
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if(pid < 0){
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printf(1, "fork failed");
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exit();
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}
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if(pid == 0){
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while(1){
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int fd = open("stopforking", 0);
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if(fd >= 0){
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exit();
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}
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if(fork() < 0){
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close(open("stopforking", O_CREATE|O_RDWR));
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}
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}
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exit();
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}
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sleep(2);
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close(open("stopforking", O_CREATE|O_RDWR));
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wait();
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sleep(1);
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printf(1, "forkforkfork ok\n");
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}
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void
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mem(void)
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{
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void *m1, *m2;
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int pid, ppid;
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printf(1, "mem test\n");
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ppid = getpid();
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if((pid = fork()) == 0){
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m1 = 0;
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while((m2 = malloc(10001)) != 0){
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*(char**)m2 = m1;
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m1 = m2;
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}
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while(m1){
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m2 = *(char**)m1;
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free(m1);
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m1 = m2;
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}
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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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kill(ppid);
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exit();
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}
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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 {
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wait();
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}
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}
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// More file system tests
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// two processes write to the same file descriptor
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// is the offset shared? does inode locking work?
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void
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|
sharedfd(void)
|
|
{
|
|
int fd, pid, i, n, nc, np;
|
|
char buf[10];
|
|
|
|
printf(1, "sharedfd test\n");
|
|
|
|
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));
|
|
for(i = 0; i < 1000; i++){
|
|
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");
|
|
if(nc == 10000 && np == 10000){
|
|
printf(1, "sharedfd ok\n");
|
|
} else {
|
|
printf(1, "sharedfd oops %d %d\n", nc, np);
|
|
exit();
|
|
}
|
|
}
|
|
|
|
// four processes write different files at the same
|
|
// time, to test block allocation.
|
|
void
|
|
fourfiles(void)
|
|
{
|
|
int fd, pid, i, j, n, total, pi;
|
|
char *names[] = { "f0", "f1", "f2", "f3" };
|
|
char *fname;
|
|
|
|
printf(1, "fourfiles test\n");
|
|
|
|
for(pi = 0; pi < 4; pi++){
|
|
fname = names[pi];
|
|
unlink(fname);
|
|
|
|
pid = fork();
|
|
if(pid < 0){
|
|
printf(1, "fork failed\n");
|
|
exit();
|
|
}
|
|
|
|
if(pid == 0){
|
|
fd = open(fname, O_CREATE | O_RDWR);
|
|
if(fd < 0){
|
|
printf(1, "create failed\n");
|
|
exit();
|
|
}
|
|
|
|
memset(buf, '0'+pi, 512);
|
|
for(i = 0; i < 12; i++){
|
|
if((n = write(fd, buf, 500)) != 500){
|
|
printf(1, "write failed %d\n", n);
|
|
exit();
|
|
}
|
|
}
|
|
exit();
|
|
}
|
|
}
|
|
|
|
for(pi = 0; pi < 4; pi++){
|
|
wait();
|
|
}
|
|
|
|
for(i = 0; i < 2; i++){
|
|
fname = names[i];
|
|
fd = open(fname, 0);
|
|
total = 0;
|
|
while((n = read(fd, buf, sizeof(buf))) > 0){
|
|
for(j = 0; j < n; j++){
|
|
if(buf[j] != '0'+i){
|
|
printf(1, "wrong char\n");
|
|
exit();
|
|
}
|
|
}
|
|
total += n;
|
|
}
|
|
close(fd);
|
|
if(total != 12*500){
|
|
printf(1, "wrong length %d\n", total);
|
|
exit();
|
|
}
|
|
unlink(fname);
|
|
}
|
|
|
|
printf(1, "fourfiles ok\n");
|
|
}
|
|
|
|
// four processes create and delete different files in same directory
|
|
void
|
|
createdelete(void)
|
|
{
|
|
enum { N = 20, NCHILD=4 };
|
|
int pid, i, fd, pi;
|
|
char name[32];
|
|
|
|
printf(1, "createdelete test\n");
|
|
|
|
for(pi = 0; pi < NCHILD; pi++){
|
|
pid = fork();
|
|
if(pid < 0){
|
|
printf(1, "fork failed\n");
|
|
exit();
|
|
}
|
|
|
|
if(pid == 0){
|
|
name[0] = 'p' + pi;
|
|
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();
|
|
}
|
|
}
|
|
}
|
|
exit();
|
|
}
|
|
}
|
|
|
|
for(pi = 0; pi < NCHILD; pi++){
|
|
wait();
|
|
}
|
|
|
|
name[0] = name[1] = name[2] = 0;
|
|
for(i = 0; i < N; i++){
|
|
for(pi = 0; pi < NCHILD; pi++){
|
|
name[0] = 'p' + pi;
|
|
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++){
|
|
for(pi = 0; pi < NCHILD; pi++){
|
|
name[0] = 'p' + i;
|
|
name[1] = '0' + i;
|
|
unlink(name);
|
|
}
|
|
}
|
|
|
|
printf(1, "createdelete ok\n");
|
|
}
|
|
|
|
// can I unlink a file and still read it?
|
|
void
|
|
unlinkread(void)
|
|
{
|
|
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(void)
|
|
{
|
|
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/link/unlink of the same file
|
|
void
|
|
concreate(void)
|
|
{
|
|
char file[3];
|
|
int i, pid, n, fd;
|
|
char fa[40];
|
|
struct {
|
|
ushort 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;
|
|
pid = fork();
|
|
if(pid < 0){
|
|
printf(1, "fork failed\n");
|
|
exit();
|
|
}
|
|
if(((i % 3) == 0 && pid == 0) ||
|
|
((i % 3) == 1 && pid != 0)){
|
|
close(open(file, 0));
|
|
close(open(file, 0));
|
|
close(open(file, 0));
|
|
close(open(file, 0));
|
|
} else {
|
|
unlink(file);
|
|
unlink(file);
|
|
unlink(file);
|
|
unlink(file);
|
|
}
|
|
if(pid == 0)
|
|
exit();
|
|
else
|
|
wait();
|
|
}
|
|
|
|
printf(1, "concreate ok\n");
|
|
}
|
|
|
|
// another concurrent link/unlink/create test,
|
|
// to look for deadlocks.
|
|
void
|
|
linkunlink()
|
|
{
|
|
int pid, i;
|
|
|
|
printf(1, "linkunlink test\n");
|
|
|
|
unlink("x");
|
|
pid = fork();
|
|
if(pid < 0){
|
|
printf(1, "fork failed\n");
|
|
exit();
|
|
}
|
|
|
|
unsigned int x = (pid ? 1 : 97);
|
|
for(i = 0; i < 100; i++){
|
|
x = x * 1103515245 + 12345;
|
|
if((x % 3) == 0){
|
|
close(open("x", O_RDWR | O_CREATE));
|
|
} else if((x % 3) == 1){
|
|
link("cat", "x");
|
|
} else {
|
|
unlink("x");
|
|
}
|
|
}
|
|
|
|
if(pid)
|
|
wait();
|
|
else
|
|
exit();
|
|
|
|
printf(1, "linkunlink ok\n");
|
|
}
|
|
|
|
// directory that uses indirect blocks
|
|
void
|
|
bigdir(void)
|
|
{
|
|
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(void)
|
|
{
|
|
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(unlink("dd") >= 0){
|
|
printf(1, "unlink dd (non-empty dir) succeeded!\n");
|
|
exit();
|
|
}
|
|
|
|
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(open("dd/dd/ff", O_RDONLY) >= 0){
|
|
printf(1, "open (unlinked) dd/dd/ff succeeded\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("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", O_RDONLY) >= 0){
|
|
printf(1, "open (unlinked) 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();
|
|
}
|
|
if(unlink("dd") == 0){
|
|
printf(1, "unlink non-empty dd succeeded!\n");
|
|
exit();
|
|
}
|
|
if(unlink("dd/dd") < 0){
|
|
printf(1, "unlink dd/dd failed\n");
|
|
exit();
|
|
}
|
|
if(unlink("dd") < 0){
|
|
printf(1, "unlink dd failed\n");
|
|
exit();
|
|
}
|
|
|
|
printf(1, "subdir ok\n");
|
|
}
|
|
|
|
// test writes that are larger than the log.
|
|
void
|
|
bigwrite(void)
|
|
{
|
|
int fd, sz;
|
|
|
|
printf(1, "bigwrite test\n");
|
|
|
|
unlink("bigwrite");
|
|
for(sz = 499; sz < 12*512; sz += 471){
|
|
fd = open("bigwrite", O_CREATE | O_RDWR);
|
|
if(fd < 0){
|
|
printf(1, "cannot create bigwrite\n");
|
|
exit();
|
|
}
|
|
int i;
|
|
for(i = 0; i < 2; i++){
|
|
int cc = write(fd, buf, sz);
|
|
if(cc != sz){
|
|
printf(1, "write(%d) ret %d\n", sz, cc);
|
|
exit();
|
|
}
|
|
}
|
|
close(fd);
|
|
unlink("bigwrite");
|
|
}
|
|
|
|
printf(1, "bigwrite ok\n");
|
|
}
|
|
|
|
void
|
|
bigfile(void)
|
|
{
|
|
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(void)
|
|
{
|
|
int fd;
|
|
|
|
// DIRSIZ is 14.
|
|
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");
|
|
}
|
|
|
|
void
|
|
rmdot(void)
|
|
{
|
|
printf(1, "rmdot test\n");
|
|
if(mkdir("dots") != 0){
|
|
printf(1, "mkdir dots failed\n");
|
|
exit();
|
|
}
|
|
if(chdir("dots") != 0){
|
|
printf(1, "chdir dots failed\n");
|
|
exit();
|
|
}
|
|
if(unlink(".") == 0){
|
|
printf(1, "rm . worked!\n");
|
|
exit();
|
|
}
|
|
if(unlink("..") == 0){
|
|
printf(1, "rm .. worked!\n");
|
|
exit();
|
|
}
|
|
if(chdir("/") != 0){
|
|
printf(1, "chdir / failed\n");
|
|
exit();
|
|
}
|
|
if(unlink("dots/.") == 0){
|
|
printf(1, "unlink dots/. worked!\n");
|
|
exit();
|
|
}
|
|
if(unlink("dots/..") == 0){
|
|
printf(1, "unlink dots/.. worked!\n");
|
|
exit();
|
|
}
|
|
if(unlink("dots") != 0){
|
|
printf(1, "unlink dots failed!\n");
|
|
exit();
|
|
}
|
|
printf(1, "rmdot ok\n");
|
|
}
|
|
|
|
void
|
|
dirfile(void)
|
|
{
|
|
int fd;
|
|
|
|
printf(1, "dir vs file\n");
|
|
|
|
fd = open("dirfile", O_CREATE);
|
|
if(fd < 0){
|
|
printf(1, "create dirfile failed\n");
|
|
exit();
|
|
}
|
|
close(fd);
|
|
if(chdir("dirfile") == 0){
|
|
printf(1, "chdir dirfile succeeded!\n");
|
|
exit();
|
|
}
|
|
fd = open("dirfile/xx", 0);
|
|
if(fd >= 0){
|
|
printf(1, "create dirfile/xx succeeded!\n");
|
|
exit();
|
|
}
|
|
fd = open("dirfile/xx", O_CREATE);
|
|
if(fd >= 0){
|
|
printf(1, "create dirfile/xx succeeded!\n");
|
|
exit();
|
|
}
|
|
if(mkdir("dirfile/xx") == 0){
|
|
printf(1, "mkdir dirfile/xx succeeded!\n");
|
|
exit();
|
|
}
|
|
if(unlink("dirfile/xx") == 0){
|
|
printf(1, "unlink dirfile/xx succeeded!\n");
|
|
exit();
|
|
}
|
|
if(link("README", "dirfile/xx") == 0){
|
|
printf(1, "link to dirfile/xx succeeded!\n");
|
|
exit();
|
|
}
|
|
if(unlink("dirfile") != 0){
|
|
printf(1, "unlink dirfile failed!\n");
|
|
exit();
|
|
}
|
|
|
|
fd = open(".", O_RDWR);
|
|
if(fd >= 0){
|
|
printf(1, "open . for writing succeeded!\n");
|
|
exit();
|
|
}
|
|
fd = open(".", 0);
|
|
if(write(fd, "x", 1) > 0){
|
|
printf(1, "write . succeeded!\n");
|
|
exit();
|
|
}
|
|
close(fd);
|
|
|
|
printf(1, "dir vs file OK\n");
|
|
}
|
|
|
|
// test that iput() is called at the end of _namei()
|
|
void
|
|
iref(void)
|
|
{
|
|
int i, fd;
|
|
|
|
printf(1, "empty file name\n");
|
|
|
|
// the 50 is NINODE
|
|
for(i = 0; i < 50 + 1; i++){
|
|
if(mkdir("irefd") != 0){
|
|
printf(1, "mkdir irefd failed\n");
|
|
exit();
|
|
}
|
|
if(chdir("irefd") != 0){
|
|
printf(1, "chdir irefd failed\n");
|
|
exit();
|
|
}
|
|
|
|
mkdir("");
|
|
link("README", "");
|
|
fd = open("", O_CREATE);
|
|
if(fd >= 0)
|
|
close(fd);
|
|
fd = open("xx", O_CREATE);
|
|
if(fd >= 0)
|
|
close(fd);
|
|
unlink("xx");
|
|
}
|
|
|
|
chdir("/");
|
|
printf(1, "empty file name OK\n");
|
|
}
|
|
|
|
// test that fork fails gracefully
|
|
// the forktest binary also does this, but it runs out of proc entries first.
|
|
// inside the bigger usertests binary, we run out of memory first.
|
|
void
|
|
forktest(void)
|
|
{
|
|
int n, pid;
|
|
|
|
printf(1, "fork test\n");
|
|
|
|
for(n=0; n<1000; n++){
|
|
pid = fork();
|
|
if(pid < 0)
|
|
break;
|
|
if(pid == 0)
|
|
exit();
|
|
}
|
|
|
|
if (n == 0) {
|
|
printf(1, "no fork at all!\n");
|
|
exit();
|
|
}
|
|
|
|
if(n == 1000){
|
|
printf(1, "fork claimed to work 1000 times!\n");
|
|
exit();
|
|
}
|
|
|
|
for(; n > 0; n--){
|
|
if(wait() < 0){
|
|
printf(1, "wait stopped early\n");
|
|
exit();
|
|
}
|
|
}
|
|
|
|
if(wait() != -1){
|
|
printf(1, "wait got too many\n");
|
|
exit();
|
|
}
|
|
|
|
printf(1, "fork test OK\n");
|
|
}
|
|
|
|
void
|
|
sbrktest(void)
|
|
{
|
|
int i, fds[2], pids[10], pid, ppid;
|
|
char *c, *oldbrk, scratch, *a, *b, *lastaddr, *p;
|
|
uint64 amt;
|
|
int fd;
|
|
int n;
|
|
#define BIG (100*1024*1024)
|
|
|
|
printf(stdout, "sbrk test\n");
|
|
oldbrk = sbrk(0);
|
|
|
|
// does sbrk() return the expected failure value?
|
|
a = sbrk(1024*1024*1024);
|
|
if(a != (char*)0xffffffffffffffffL){
|
|
printf(stdout, "sbrk(<toomuch>) returned %p\n", a);
|
|
exit();
|
|
}
|
|
|
|
// can one sbrk() less than a page?
|
|
a = sbrk(0);
|
|
for(i = 0; i < 5000; i++){
|
|
b = sbrk(1);
|
|
if(b != a){
|
|
printf(stdout, "sbrk test failed %d %x %x\n", i, a, b);
|
|
exit();
|
|
}
|
|
*b = 1;
|
|
a = b + 1;
|
|
}
|
|
pid = fork();
|
|
if(pid < 0){
|
|
printf(stdout, "sbrk test fork failed\n");
|
|
exit();
|
|
}
|
|
c = sbrk(1);
|
|
c = sbrk(1);
|
|
if(c != a + 1){
|
|
printf(stdout, "sbrk test failed post-fork\n");
|
|
exit();
|
|
}
|
|
if(pid == 0)
|
|
exit();
|
|
wait();
|
|
|
|
// can one grow address space to something big?
|
|
a = sbrk(0);
|
|
amt = BIG - (uint64)a;
|
|
p = sbrk(amt);
|
|
if (p != a) {
|
|
printf(stdout, "sbrk test failed to grow big address space; enough phys mem?\n");
|
|
exit();
|
|
}
|
|
lastaddr = (char*) (BIG-1);
|
|
*lastaddr = 99;
|
|
|
|
// can one de-allocate?
|
|
a = sbrk(0);
|
|
c = sbrk(-4096);
|
|
if(c == (char*)0xffffffffffffffffL){
|
|
printf(stdout, "sbrk could not deallocate\n");
|
|
exit();
|
|
}
|
|
c = sbrk(0);
|
|
if(c != a - 4096){
|
|
printf(stdout, "sbrk deallocation produced wrong address, a %x c %x\n", a, c);
|
|
exit();
|
|
}
|
|
|
|
// can one re-allocate that page?
|
|
a = sbrk(0);
|
|
c = sbrk(4096);
|
|
if(c != a || sbrk(0) != a + 4096){
|
|
printf(stdout, "sbrk re-allocation failed, a %x c %x\n", a, c);
|
|
exit();
|
|
}
|
|
if(*lastaddr == 99){
|
|
// should be zero
|
|
printf(stdout, "sbrk de-allocation didn't really deallocate\n");
|
|
exit();
|
|
}
|
|
|
|
a = sbrk(0);
|
|
c = sbrk(-(sbrk(0) - oldbrk));
|
|
if(c != a){
|
|
printf(stdout, "sbrk downsize failed, a %x c %x\n", a, c);
|
|
exit();
|
|
}
|
|
|
|
// can we read the kernel's memory?
|
|
for(a = (char*)(KERNBASE); a < (char*) (KERNBASE+2000000); a += 50000){
|
|
ppid = getpid();
|
|
pid = fork();
|
|
if(pid < 0){
|
|
printf(stdout, "fork failed\n");
|
|
exit();
|
|
}
|
|
if(pid == 0){
|
|
printf(stdout, "oops could read %x = %x\n", a, *a);
|
|
kill(ppid);
|
|
exit();
|
|
}
|
|
wait();
|
|
}
|
|
|
|
// if we run the system out of memory, does it clean up the last
|
|
// failed allocation?
|
|
if(pipe(fds) != 0){
|
|
printf(1, "pipe() failed\n");
|
|
exit();
|
|
}
|
|
for(i = 0; i < sizeof(pids)/sizeof(pids[0]); i++){
|
|
if((pids[i] = fork()) == 0){
|
|
// allocate a lot of memory
|
|
sbrk(BIG - (uint64)sbrk(0));
|
|
write(fds[1], "x", 1);
|
|
// sit around until killed
|
|
for(;;) sleep(1000);
|
|
}
|
|
if(pids[i] != -1)
|
|
read(fds[0], &scratch, 1);
|
|
}
|
|
|
|
// if those failed allocations freed up the pages they did allocate,
|
|
// we'll be able to allocate here
|
|
c = sbrk(4096);
|
|
for(i = 0; i < sizeof(pids)/sizeof(pids[0]); i++){
|
|
if(pids[i] == -1)
|
|
continue;
|
|
kill(pids[i]);
|
|
wait();
|
|
}
|
|
if(c == (char*)0xffffffffffffffffL){
|
|
printf(stdout, "failed sbrk leaked memory\n");
|
|
exit();
|
|
}
|
|
|
|
// test running fork with the above allocated page
|
|
ppid = getpid();
|
|
pid = fork();
|
|
if(pid < 0){
|
|
printf(stdout, "fork failed\n");
|
|
exit();
|
|
}
|
|
|
|
// test out of memory during sbrk
|
|
if(pid == 0){
|
|
// allocate a lot of memory
|
|
a = sbrk(0);
|
|
sbrk(10*BIG);
|
|
int n = 0;
|
|
for (i = 0; i < 10*BIG; i += 4096) {
|
|
n += *(a+i);
|
|
}
|
|
printf(stdout, "allocate a lot of memory succeeded %d\n", n);
|
|
kill(ppid);
|
|
exit();
|
|
}
|
|
wait();
|
|
|
|
// test reads from allocated memory
|
|
a = sbrk(4096);
|
|
fd = open("sbrk", O_CREATE|O_WRONLY);
|
|
unlink("sbrk");
|
|
if(fd < 0) {
|
|
printf(stdout, "open sbrk failed\n");
|
|
exit();
|
|
}
|
|
if ((n = write(fd, a, 10)) < 0) {
|
|
printf(stdout, "write sbrk failed\n");
|
|
exit();
|
|
}
|
|
close(fd);
|
|
|
|
// test writes to allocated memory
|
|
a = sbrk(4096);
|
|
if(pipe((int *) a) != 0){
|
|
printf(1, "pipe() failed\n");
|
|
exit();
|
|
}
|
|
|
|
if(sbrk(0) > oldbrk)
|
|
sbrk(-(sbrk(0) - oldbrk));
|
|
|
|
printf(stdout, "sbrk test OK\n");
|
|
}
|
|
|
|
void
|
|
validateint(int *p)
|
|
{
|
|
/* XXX int res;
|
|
asm("mov %%esp, %%ebx\n\t"
|
|
"mov %3, %%esp\n\t"
|
|
"int %2\n\t"
|
|
"mov %%ebx, %%esp" :
|
|
"=a" (res) :
|
|
"a" (SYS_sleep), "n" (T_SYSCALL), "c" (p) :
|
|
"ebx");
|
|
*/
|
|
}
|
|
|
|
void
|
|
validatetest(void)
|
|
{
|
|
int hi, pid;
|
|
uint64 p;
|
|
|
|
printf(stdout, "validate test\n");
|
|
hi = 1100*1024;
|
|
|
|
for(p = 0; p <= (uint)hi; p += 4096){
|
|
if((pid = fork()) == 0){
|
|
// try to crash the kernel by passing in a badly placed integer
|
|
validateint((int*)p);
|
|
exit();
|
|
}
|
|
sleep(0);
|
|
sleep(0);
|
|
kill(pid);
|
|
wait();
|
|
|
|
// try to crash the kernel by passing in a bad string pointer
|
|
if(link("nosuchfile", (char*)p) != -1){
|
|
printf(stdout, "link should not succeed\n");
|
|
exit();
|
|
}
|
|
}
|
|
|
|
printf(stdout, "validate ok\n");
|
|
}
|
|
|
|
// does unintialized data start out zero?
|
|
char uninit[10000];
|
|
void
|
|
bsstest(void)
|
|
{
|
|
int i;
|
|
|
|
printf(stdout, "bss test\n");
|
|
for(i = 0; i < sizeof(uninit); i++){
|
|
if(uninit[i] != '\0'){
|
|
printf(stdout, "bss test failed\n");
|
|
exit();
|
|
}
|
|
}
|
|
printf(stdout, "bss test ok\n");
|
|
}
|
|
|
|
// does exec return an error if the arguments
|
|
// are larger than a page? or does it write
|
|
// below the stack and wreck the instructions/data?
|
|
void
|
|
bigargtest(void)
|
|
{
|
|
int pid, fd;
|
|
|
|
unlink("bigarg-ok");
|
|
pid = fork();
|
|
if(pid == 0){
|
|
static char *args[MAXARG];
|
|
int i;
|
|
for(i = 0; i < MAXARG-1; i++)
|
|
args[i] = "bigargs test: failed\n ";
|
|
args[MAXARG-1] = 0;
|
|
printf(stdout, "bigarg test\n");
|
|
exec("echo", args);
|
|
printf(stdout, "bigarg test ok\n");
|
|
fd = open("bigarg-ok", O_CREATE);
|
|
close(fd);
|
|
exit();
|
|
} else if(pid < 0){
|
|
printf(stdout, "bigargtest: fork failed\n");
|
|
exit();
|
|
}
|
|
wait();
|
|
fd = open("bigarg-ok", 0);
|
|
if(fd < 0){
|
|
printf(stdout, "bigarg test failed!\n");
|
|
exit();
|
|
}
|
|
close(fd);
|
|
unlink("bigarg-ok");
|
|
}
|
|
|
|
// what happens when the file system runs out of blocks?
|
|
// answer: balloc panics, so this test is not useful.
|
|
void
|
|
fsfull()
|
|
{
|
|
int nfiles;
|
|
int fsblocks = 0;
|
|
|
|
printf(1, "fsfull test\n");
|
|
|
|
for(nfiles = 0; ; nfiles++){
|
|
char name[64];
|
|
name[0] = 'f';
|
|
name[1] = '0' + nfiles / 1000;
|
|
name[2] = '0' + (nfiles % 1000) / 100;
|
|
name[3] = '0' + (nfiles % 100) / 10;
|
|
name[4] = '0' + (nfiles % 10);
|
|
name[5] = '\0';
|
|
printf(1, "writing %s\n", name);
|
|
int fd = open(name, O_CREATE|O_RDWR);
|
|
if(fd < 0){
|
|
printf(1, "open %s failed\n", name);
|
|
break;
|
|
}
|
|
int total = 0;
|
|
while(1){
|
|
int cc = write(fd, buf, 512);
|
|
if(cc < 512)
|
|
break;
|
|
total += cc;
|
|
fsblocks++;
|
|
}
|
|
printf(1, "wrote %d bytes\n", total);
|
|
close(fd);
|
|
if(total == 0)
|
|
break;
|
|
}
|
|
|
|
while(nfiles >= 0){
|
|
char name[64];
|
|
name[0] = 'f';
|
|
name[1] = '0' + nfiles / 1000;
|
|
name[2] = '0' + (nfiles % 1000) / 100;
|
|
name[3] = '0' + (nfiles % 100) / 10;
|
|
name[4] = '0' + (nfiles % 10);
|
|
name[5] = '\0';
|
|
unlink(name);
|
|
nfiles--;
|
|
}
|
|
|
|
printf(1, "fsfull test finished\n");
|
|
}
|
|
|
|
void argptest()
|
|
{
|
|
int fd;
|
|
fd = open("init", O_RDONLY);
|
|
if (fd < 0) {
|
|
printf(2, "open failed\n");
|
|
exit();
|
|
}
|
|
read(fd, sbrk(0) - 1, -1);
|
|
close(fd);
|
|
printf(1, "arg test passed\n");
|
|
}
|
|
|
|
unsigned long randstate = 1;
|
|
unsigned int
|
|
rand()
|
|
{
|
|
randstate = randstate * 1664525 + 1013904223;
|
|
return randstate;
|
|
}
|
|
|
|
// check that there's an invalid page beneath
|
|
// the user stack, to catch stack overflow.
|
|
void
|
|
stacktest()
|
|
{
|
|
int pid;
|
|
int ppid = getpid();
|
|
|
|
printf(1, "stack guard test\n");
|
|
pid = fork();
|
|
if(pid == 0) {
|
|
char *sp = (char *) r_sp();
|
|
sp -= 4096;
|
|
// the *sp should cause a trap.
|
|
printf(1, "stacktest: read below stack %p\n", *sp);
|
|
printf(1, "stacktest: test FAILED\n");
|
|
kill(ppid);
|
|
exit();
|
|
} else if(pid < 0){
|
|
printf (1, "fork failed\n");
|
|
exit();
|
|
}
|
|
wait();
|
|
printf(1, "stack guard test ok\n");
|
|
}
|
|
|
|
int
|
|
main(int argc, char *argv[])
|
|
{
|
|
printf(1, "usertests starting\n");
|
|
|
|
if(open("usertests.ran", 0) >= 0){
|
|
printf(1, "already ran user tests -- rebuild fs.img\n");
|
|
exit();
|
|
}
|
|
close(open("usertests.ran", O_CREATE));
|
|
|
|
reparent();
|
|
twochildren();
|
|
forkfork();
|
|
forkforkfork();
|
|
|
|
argptest();
|
|
createdelete();
|
|
linkunlink();
|
|
concreate();
|
|
fourfiles();
|
|
sharedfd();
|
|
|
|
bigargtest();
|
|
bigwrite();
|
|
bigargtest();
|
|
bsstest();
|
|
sbrktest();
|
|
validatetest();
|
|
stacktest();
|
|
|
|
opentest();
|
|
writetest();
|
|
writetest1();
|
|
createtest();
|
|
|
|
openiputtest();
|
|
exitiputtest();
|
|
iputtest();
|
|
|
|
mem();
|
|
pipe1();
|
|
preempt();
|
|
exitwait();
|
|
|
|
rmdot();
|
|
fourteen();
|
|
bigfile();
|
|
subdir();
|
|
linktest();
|
|
unlinkread();
|
|
dirfile();
|
|
iref();
|
|
forktest();
|
|
bigdir(); // slow
|
|
|
|
exectest();
|
|
|
|
exit();
|
|
}
|