Fennix/Userspace/apps/test/utest/userspace_test.c
2025-03-24 15:33:07 +00:00

1028 lines
18 KiB
C

#define _POSIX_C_SOURCE 200809L
#define _POSIX_SOURCE
#define _GNU_SOURCE
#include <stdint.h>
#include <stddef.h>
#include <dirent.h>
#include <sys/wait.h>
#include <string.h>
#include <errno.h>
#include <fcntl.h>
#include <stdlib.h>
#include <signal.h>
#include <stdio.h>
#include <sys/stat.h>
#include <unistd.h>
#include <time.h>
#include <pwd.h>
#include <assert.h>
#define AT_NULL 0
#define AT_IGNORE 1
#define AT_EXECFD 2
#define AT_PHDR 3
#define AT_PHENT 4
#define AT_PHNUM 5
#define AT_PAGESZ 6
#define AT_BASE 7
#define AT_FLAGS 8
#define AT_ENTRY 9
#define AT_NOTELF 10
#define AT_UID 11
#define AT_EUID 12
#define AT_GID 13
#define AT_EGID 14
#define AT_PLATFORM 15
#define AT_HWCAP 16
#define AT_CLKTCK 17
#define AT_SECURE 23
#define AT_BASE_PLATFORM 24
#define AT_RANDOM 25
#define AT_HWCAP2 26
#define AT_EXECFN 31
#define AT_SYSINFO 32
#define AT_SYSINFO_EHDR 33
#define AT_L1I_CACHESHAPE 34
#define AT_L1D_CACHESHAPE 35
#define AT_L2_CACHESHAPE 36
#define AT_L3_CACHESHAPE 37
#define AT_L1I_CACHESIZE 40
#define AT_L1I_CACHEGEOMETRY 41
#define AT_L1D_CACHESIZE 42
#define AT_L1D_CACHEGEOMETRY 43
#define AT_L2_CACHESIZE 44
#define AT_L2_CACHEGEOMETRY 45
#define AT_L3_CACHESIZE 46
#define AT_L3_CACHEGEOMETRY 47
#define AT_MINSIGSTKSZ 51
#define EVENT_SIZE (sizeof(struct inotify_event))
#define BUF_LEN (1024 * (EVENT_SIZE + 16))
typedef struct
{
uint32_t a_type;
union
{
uint32_t a_val;
} a_un;
} Elf32_auxv_t;
typedef struct
{
uint64_t a_type;
union
{
uint64_t a_val;
} a_un;
} Elf64_auxv_t;
#ifdef __LP64__
#define Elf_auxv_t Elf64_auxv_t
#else
#define Elf_auxv_t Elf32_auxv_t
#endif
#define loop \
while (1) \
;
#define __musl_SYS_brk 12
static __inline long __musl_syscall1(long n, long a1)
{
unsigned long ret;
#if defined(__amd64__)
__asm__ __volatile__("syscall"
: "=a"(ret)
: "a"(n), "D"(a1)
: "rcx", "r11", "memory");
#endif
return ret;
}
long __musl_syscall_ret(unsigned long r)
{
if (r > -4096UL)
{
errno = -r;
return -1;
}
return r;
}
void test_unaligned()
{
printf("- Testing unaligned access\n");
int *ptr = (int *)malloc(sizeof(int));
uintptr_t unaligned_addr = (uintptr_t)ptr + 1;
*(int *)unaligned_addr = 42;
printf("%p->%p: %d\n", (void *)ptr,
(void *)unaligned_addr,
*(int *)unaligned_addr);
free(ptr);
}
struct passwd *p = NULL;
void test_passwd()
{
printf("- Testing passwd\n");
p = getpwuid(getuid());
if (p == NULL)
{
perror("getpwuid");
fflush(stdout);
fflush(stderr);
}
else
{
printf("name: %s\n", p->pw_name);
// printf("passwd: %s\n", p->pw_passwd);
printf("uid: %d\n", p->pw_uid);
printf("gid: %d\n", p->pw_gid);
// printf("gecos: %s\n", p->pw_gecos);
printf("dir: %s\n", p->pw_dir);
printf("shell: %s\n", p->pw_shell);
fflush(stdout);
}
}
static void *heap_end = NULL;
void *__libc_sbrk(intptr_t increment)
{
if (heap_end == NULL)
{
heap_end = (void *)__musl_syscall1(__musl_SYS_brk, 0);
printf("SYS_brk(0) = %p\n", heap_end);
heap_end = (void *)__musl_syscall1(__musl_SYS_brk, (long)heap_end + 0x2000);
printf("Adding 0x2000 to heap_end: %p\n", heap_end);
}
if (increment == 0)
{
printf("Returning heap_end: %p\n", heap_end);
return heap_end;
}
void *old_heap_end = heap_end;
long ret = __musl_syscall1(__musl_SYS_brk, (long)heap_end + increment);
printf("SYS_brk(%p) = %p\n", (void *)((long)heap_end + increment), (void *)ret);
if (ret == 0)
{
heap_end = (void *)__musl_syscall1(__musl_SYS_brk, 0);
printf("SYS_brk(0) = %p\n", heap_end);
return old_heap_end;
}
return (void *)__musl_syscall_ret(ret);
}
void test_brk()
{
printf("- Testing brk\n");
void *current_brk = __libc_sbrk(0);
printf("Initial break address: %p\n", current_brk);
void *new_brk = __libc_sbrk(0x1000);
if (new_brk == (void *)-1)
{
perror("Error extending heap");
fflush(stdout);
fflush(stderr);
return;
}
printf("Heap extended successfully.\n");
printf("New break address: %p\n", new_brk);
if (__libc_sbrk(current_brk - new_brk) == (void *)-1)
{
perror("Error reducing heap");
fflush(stdout);
fflush(stderr);
return;
}
printf("Heap reduced successfully.\n");
printf("Current break address after reduction: %p\n", __libc_sbrk(0));
void *extended_brk = __libc_sbrk(0x1000);
if (extended_brk == (void *)-1)
{
perror("Error extending heap after reduction");
fflush(stdout);
fflush(stderr);
return;
}
printf("Heap extended successfully after reduction.\n");
printf("New break address after extension: %p\n", extended_brk);
__libc_sbrk(-0x1000);
}
void test_time()
{
printf("- Testing time\n");
struct tm time = {0};
int Year = 2012;
int Month = 6;
int Day = 9;
int Hour = 4;
int Minute = 2;
int Second = 0;
time.tm_year = Year - 1900;
time.tm_mon = Month - 1;
time.tm_mday = Day;
time.tm_hour = Hour;
time.tm_min = Minute;
time.tm_sec = Second;
if (time.tm_year < 0)
time.tm_year = 0;
time_t t = mktime(&time);
if (t != (time_t)-1)
{
#ifndef __fennix__
stime(&t);
#endif
}
else
{
perror("mktime");
fflush(stdout);
fflush(stderr);
}
time_t now = t;
struct tm t1;
gmtime_r(&now, &t1);
printf("UTC: %d-%02d-%02d %02d:%02d:%02d\n", t1.tm_year + 1900, t1.tm_mon + 1, t1.tm_mday, t1.tm_hour, t1.tm_min, t1.tm_sec);
struct tm t2;
localtime_r(&now, &t2);
printf("Local: %d-%02d-%02d %02d:%02d:%02d\n", t2.tm_year + 1900, t2.tm_mon + 1, t2.tm_mday, t2.tm_hour, t2.tm_min, t2.tm_sec);
struct tm t3 = t2;
time_t t_val = mktime(&t3);
printf("mktime: %ld\n", (long)t_val);
tzset();
printf("tzname[0]: %s\n", tzname[0]);
printf("tzname[1]: %s\n", tzname[1]);
printf("timezone: %ld\n", timezone);
printf("daylight: %d\n", daylight);
fflush(stdout);
}
void test_args(int argc, char *argv[], char *envp[])
{
printf("- Testing args\n");
printf("%p %p %p\n",
(void *)(uintptr_t)&argc,
(void *)&argv,
(void *)&envp);
printf("I have %d arguments\n", argc);
for (int i = 0; i < argc; i++)
printf("argv[%d] = (%p) %s\n", i, argv[i], argv[i]);
int envc = 0;
while (envp[envc] != NULL)
envc++;
printf("I have %d environment variables\n", envc);
for (int i = 0; i < envc; i++)
printf("envp[%d] = (%p) %s\n", i, envp[i], envp[i]);
Elf64_auxv_t *auxv;
char **e = envp;
while (*e++ != NULL)
;
for (auxv = (Elf64_auxv_t *)e; auxv->a_type != AT_NULL; auxv++)
printf("auxv: %ld %#lx\n", auxv->a_type, auxv->a_un.a_val);
}
void test_stdio()
{
printf("- Testing stdin\n");
pid_t pid = fork();
if (pid < 0)
{
perror("fork");
fflush(stdout);
fflush(stderr);
return;
}
else if (pid != 0)
return;
printf("Type a character: ");
char c = getchar();
printf("You typed: %c (%#x)\n", c, c);
char *line = NULL;
size_t len = 0;
ssize_t read;
printf("Type a line: ");
read = getline(&line, &len, stdin);
printf("You typed: %s (%ld bytes)\n", line, read);
free(line);
exit(EXIT_SUCCESS);
}
void test_file()
{
printf("- Testing file operations\n");
FILE *test = fopen("/sys/cfg/passwd", "r");
if (test == NULL)
{
perror("fopen");
fflush(stdout);
fflush(stderr);
return;
}
printf("/sys/cfg/passwd contents: ");
char ch;
while (1)
{
ch = fgetc(test);
if (ch == EOF)
{
printf("\n");
break;
}
putchar(ch);
}
fclose(test);
}
void test_stat()
{
printf("- Testing stat\n");
struct stat st;
if (stat("/sys/cfg/passwd", &st) == -1)
{
perror("stat");
fflush(stdout);
fflush(stderr);
return;
}
printf("File size: %ld\n", st.st_size);
printf("File mode: %o\n", st.st_mode);
printf("File inode: %ld\n", st.st_ino);
int fd = open("/sys/cfg/passwd", O_RDONLY);
if (fd == -1)
{
perror("open");
fflush(stdout);
fflush(stderr);
return;
}
if (fstat(fd, &st) == -1)
{
perror("fstat");
fflush(stdout);
fflush(stderr);
return;
}
printf("File size: %ld\n", st.st_size);
printf("File mode: %o\n", st.st_mode);
printf("File inode: %ld\n", st.st_ino);
close(fd);
if (lstat("/sys/cfg/passwd", &st) == -1)
{
perror("lstat");
fflush(stdout);
fflush(stderr);
return;
}
printf("File size: %ld\n", st.st_size);
printf("File mode: %o\n", st.st_mode);
printf("File inode: %ld\n", st.st_ino);
}
void test_ptmx()
{
#ifndef __fennix__
printf("- Testing PTMX\n");
int master, slave;
char buffer[256];
if (openpty(&master, &slave, NULL, NULL, NULL) == -1)
{
perror("openpty");
fflush(stdout);
fflush(stderr);
return;
}
write(master, "Hello, pty!\n", 12);
ssize_t bytesRead = read(slave, buffer, sizeof(buffer));
if (bytesRead > 0)
{
buffer[bytesRead] = '\0';
printf("Received from pty: %s", buffer);
}
close(master);
close(slave);
#endif
}
void test_system()
{
printf("- Testing system()\n");
int ret = system("echo Hello, world!");
printf("system() returned %d\n", ret);
}
int sigRec = 0;
void signalHandler(int signo)
{
printf("Signal %s received\n", strsignal(signo));
sigRec++;
}
int expect_sighup = 0;
void sighupHandler(int)
{
if (expect_sighup == 0)
assert(!"SIGHUP received");
else
printf("SIGHUP received\n");
}
void __sig_mask_test()
{
printf("- Testing signal masking\n");
signal(SIGHUP, sighupHandler);
sigset_t mask;
sigemptyset(&mask);
sigaddset(&mask, SIGHUP);
sigprocmask(SIG_BLOCK, &mask, NULL);
kill(getpid(), SIGHUP);
sleep(1);
expect_sighup = 1;
sigprocmask(SIG_UNBLOCK, &mask, NULL);
sleep(1);
signal(SIGHUP, SIG_IGN);
expect_sighup = 0;
kill(getpid(), SIGHUP);
sleep(1);
}
void __sig_mask_all()
{
printf("- Testing all signal masking\n");
sigset_t mask;
sigfillset(&mask);
sigprocmask(SIG_BLOCK, &mask, NULL);
sigprocmask(SIG_UNBLOCK, &mask, NULL);
}
void test_signal()
{
__sig_mask_all();
__sig_mask_test();
printf("- Testing Signals\n");
struct sigaction sa;
sa.sa_handler = signalHandler;
sigemptyset(&sa.sa_mask);
sa.sa_flags = SA_RESTART;
sigaction(SIGHUP, &sa, NULL);
signal(SIGUSR1, signalHandler);
signal(SIGUSR2, signalHandler);
sigset_t mask;
sigemptyset(&mask);
sigaddset(&mask, SIGINT);
sigaddset(&mask, SIGQUIT);
sigprocmask(SIG_BLOCK, &mask, NULL);
printf("Sending SIGUSR1...\n");
kill(getpid(), SIGUSR1);
printf("Sending SIGUSR2...\n");
kill(getpid(), SIGUSR2);
printf("Sending SIGHUP...\n");
kill(getpid(), SIGHUP);
printf("Sending SIGINT...\n");
kill(getpid(), SIGINT);
printf("Sending SIGQUIT...\n");
kill(getpid(), SIGQUIT);
printf("Signals sent\n");
while (sigRec < 2)
sleep(1);
}
void test_execve_fork()
{
printf("- Testing execve and fork\n");
pid_t pid = fork();
if (pid == 0) // Child process
{
pid_t pid2 = fork();
if (pid2 == 0) // Child process
{
char *shebangArgs[] = {"/test.sh", NULL};
execv(shebangArgs[0], shebangArgs);
perror("execv");
fflush(stdout);
fflush(stderr);
exit(EXIT_SUCCESS);
}
printf("Creating shell process\n");
char *args[] = {"/bin/echo", "Hello World from echo!", NULL};
execv(args[0], args);
perror("execv");
fflush(stdout);
fflush(stderr);
exit(EXIT_SUCCESS);
}
else if (pid > 0)
{
printf("Waiting for child process %d to exit\n", pid);
int status;
waitpid(pid, &status, 0);
printf("status=%#x\n", status);
int exited = WIFEXITED(status);
if (exited)
{
int exitCode = WEXITSTATUS(status);
if (exitCode != 0)
printf("Child process exited with code: %d\n", exitCode);
}
else
{
printf("Execution failed. (exited=%d, status=%#x)\n", exited, status);
return;
}
}
else
{
perror("fork");
fflush(stdout);
fflush(stderr);
return;
}
}
void test_dirent()
{
printf("- Testing dirent\n");
DIR *dir;
struct dirent *entry;
dir = opendir("/etc");
if (dir == NULL)
{
perror("opendir");
fflush(stdout);
fflush(stderr);
return;
}
printf("Contents of the directory:\n");
int i = 0;
while ((entry = readdir(dir)) != NULL)
{
printf("%s ", entry->d_name);
if (++i % 5 == 0)
printf("\n");
}
closedir(dir);
}
char *create_file()
{
FILE *fp;
char *path;
if (p == NULL)
{
path = malloc(24);
sprintf(path, "/tmp/watched_file.txt");
fp = fopen(path, "w");
}
else
{
path = malloc(strlen(p->pw_dir) + 24);
sprintf(path, "%s/watched_file.txt", p->pw_dir);
fp = fopen(path, "w");
}
if (fp == NULL)
{
perror("fopen");
fflush(stdout);
fflush(stderr);
return path;
}
fclose(fp);
return path;
}
char *create_directory()
{
char *path;
if (p == NULL)
{
path = malloc(24);
sprintf(path, "/tmp/watched_directory");
}
else
{
path = malloc(strlen(p->pw_dir) + 24);
sprintf(path, "%s/watched_directory", p->pw_dir);
}
if (mkdir(path, 0777) < 0)
{
perror("mkdir");
fflush(stdout);
fflush(stderr);
return path;
}
return path;
}
#ifndef __fennix__
void test_watch_file()
{
printf("- Testing file watching\n");
pid_t pid = fork();
if (pid < 0)
{
perror("fork");
fflush(stdout);
fflush(stderr);
return;
}
else if (pid != 0)
return;
char *path = create_file();
int fd, wd;
char *buffer = malloc(BUF_LEN);
fd = inotify_init();
if (fd < 0)
{
perror("inotify_init");
exit(EXIT_FAILURE);
}
wd = inotify_add_watch(fd, path,
IN_OPEN | IN_MODIFY | IN_CLOSE);
if (wd < 0)
{
perror("inotify_add_watch");
exit(EXIT_FAILURE);
}
printf("Watching for changes in file.txt...\n");
while (1)
{
ssize_t len = read(fd, buffer, BUF_LEN);
if (len < 0)
{
perror("read");
exit(EXIT_FAILURE);
}
struct inotify_event *event = (struct inotify_event *)buffer;
if (event->mask & IN_MODIFY)
printf("File modified!\n");
else if (event->mask & IN_OPEN)
printf("File opened!\n");
else if (event->mask & IN_CLOSE)
printf("File closed!\n");
else
printf("Unknown event!\n");
}
inotify_rm_watch(fd, wd);
close(fd);
exit(EXIT_SUCCESS);
}
void test_watch_directory()
{
printf("- Testing directory watching\n");
pid_t pid = fork();
if (pid < 0)
{
perror("fork");
fflush(stdout);
fflush(stderr);
return;
}
else if (pid != 0)
return;
char *path = create_directory();
int fd, wd;
char *buffer = malloc(BUF_LEN);
fd = inotify_init();
if (fd < 0)
{
perror("inotify_init");
exit(EXIT_FAILURE);
}
wd = inotify_add_watch(fd, path,
IN_OPEN | IN_CREATE | IN_DELETE | IN_MODIFY);
if (wd < 0)
{
perror("inotify_add_watch");
exit(EXIT_FAILURE);
}
printf("Watching for changes in the directory...\n");
while (1)
{
ssize_t len = read(fd, buffer, BUF_LEN);
if (len < 0)
{
perror("read");
exit(EXIT_FAILURE);
}
struct inotify_event *event = (struct inotify_event *)buffer;
if (event->mask & IN_CREATE)
printf("File created: %s\n", event->name);
else if (event->mask & IN_DELETE)
printf("File deleted: %s\n", event->name);
else if (event->mask & IN_MODIFY)
printf("File modified: %s\n", event->name);
else if (event->mask & IN_OPEN)
printf("File opened: %s\n", event->name);
else
printf("Unknown event!\n");
}
inotify_rm_watch(fd, wd);
close(fd);
exit(EXIT_SUCCESS);
}
void shutdown_linux()
{
printf("- Testing shutdown\n");
sync();
reboot(RB_POWER_OFF);
}
void reboot_linux()
{
printf("- Testing reboot\n");
sync();
reboot(RB_AUTOBOOT);
}
#endif // __fennix__
void test_stdin()
{
printf("- Testing stdin\n");
while (1)
{
printf("Input: ");
fflush(stdout);
char input[256];
fgets(input, sizeof(input), stdin);
printf("%s", input);
}
}
void self_fork_exec()
{
while (1)
{
int pid = fork();
// if (pid >= 10)
// {
// printf("[%d] Forked %d times, exiting...\n", getpid(), pid);
// kill(getpid(), SIGTERM);
// }
if (pid != 0)
continue;
printf("[%d] Executing utest(%d)...\n", getpid(), getppid());
char *a[] = {"/bin/utest", "loop", NULL};
int b = execv(a[0], a);
printf("Failed to execute utest: %d\n", b);
}
}
void fork_bomb()
{
while (1)
{
printf("[%d] Forking...\n", getpid());
int pid = fork();
if (pid != 0)
printf("[%d] Forked\n", pid);
else
printf("[%d] Child\n", getpid());
sleep(5);
}
}
void fork_bomb_syscall()
{
#ifdef __x86_64__
while (1)
{
printf("[%d] Forking...\n", getpid());
unsigned long pid;
__asm__ __volatile__("syscall" : "=a"(pid)
: "a"(57 /* x86_64 SYS_fork */)
: "rcx", "r11", "memory");
if (pid != 0)
printf("[%ld] Forked\n", pid);
else
printf("[%d] Child\n", getpid());
sleep(5);
}
#endif
}
volatile int __dummy = 0;
int fill_stack(void *p)
{
if (__dummy == 1)
return (int)(__UINTPTR_TYPE__)p;
char buf[512];
return fill_stack(buf);
}
void TestProcess(const char *program, char *const argv[])
{
printf("testing: %s\n", program);
pid_t pid = fork();
if (pid == 0)
{
execvp(program, argv);
perror("execvp");
}
else if (pid < 0)
perror("fork");
}
extern int simd_main();
extern int web_main();
extern int fb_main();
int main(int argc, char *argv[], char *envp[])
{
if (argv[1] != NULL)
{
if (strcmp(argv[1], "loop") == 0)
{
printf("[%d] Looping...\n", getpid());
while (1)
;
}
if (strcmp(argv[1], "--kernel") == 0)
{
printf("- Starting full tests...\n");
TestProcess("/bin/libc_test", NULL);
printf("- test: simd\n");
simd_main();
printf("- test: web\n");
web_main();
// while (1)
// ;
printf("- test: framebuffer\n");
fb_main();
}
}
printf("- Testing userspace...\n");
// printf("Press RETURN to start tests...\n");
// fflush(stdout);
// char key = 0;
// while (key != '\n' && key != '\r')
// key = getchar();
// self_fork_exec();
// fork_bomb();
// fork_bomb_syscall();
// fill_stack();
// test_stdin();
// test_stdio();
test_unaligned();
test_passwd();
#ifndef __fennix__
test_brk();
#endif
test_time();
test_signal();
test_ptmx();
test_args(argc, argv, envp);
test_system();
test_file();
test_stat();
test_dirent();
test_execve_fork();
#ifndef __fennix__
test_watch_file();
test_watch_directory();
shutdown_linux();
reboot_linux();
#endif
int status = 0;
pid_t wpid;
printf("Waiting for child processes to exit...\n");
while ((wpid = wait(&status)) > 0)
sleep(2);
sync();
printf("Userspace tests complete!\n");
pid_t pid = fork();
if (pid < 0)
{
perror("fork");
fflush(stdout);
fflush(stderr);
return 1;
}
else if (pid == 0)
{
printf("Starting utest_linux...\n");
char *args[] = {"/bin/utest_linux", NULL};
int ret = execv(args[0], args);
perror("execv");
fflush(stdout);
fflush(stderr);
return ret;
}
waitpid(pid, &status, 0);
// check if exited normally, or crashed
if (WIFSIGNALED(status))
{
int signal = WTERMSIG(status);
printf("utest_linux exited with signal: %s\n", strsignal(signal));
return signal;
}
else if (WIFEXITED(status))
{
int exitCode = WEXITSTATUS(status);
if (exitCode != 0)
{
printf("utest_linux exited with code: %d\n", exitCode);
return exitCode;
}
}
else
{
printf("utest_linux exited abnormally\n");
return 1;
}
return 0;
}