int main(int argc, char **argv)
{
int nthreads;
unsigned long i;
pthread_t *threads;
struct jfsck_result ckres;
if (argc != 4) {
help();
return 1;
}
mb = atoi(argv[1]);
blocksize = atoi(argv[2]) * 1024;
nthreads = atoi(argv[3]);
towrite = mb * 1024 * 1024;
threads = malloc(sizeof(pthread_t) * nthreads);
if (threads == NULL) {
perror("malloc()");
return 1;
}
fs = jopen(FILENAME, O_RDWR | O_CREAT | O_TRUNC, 0600, 0);
if (fs == NULL) {
perror("jopen()");
return 1;
}
jtruncate(fs, towrite * nthreads);
for (i = 0; i < nthreads; i++) {
pthread_create(threads + i, NULL, &worker, (void *) i);
}
for (i = 0; i < nthreads; i++) {
pthread_join(*(threads + i), NULL);
}
jclose(fs);
jfsck(FILENAME, NULL, &ckres, 0);
if (ckres.total != 0) {
fprintf(stderr, "There were %d errors during the test\n",
ckres.total);
fprintf(stderr, "jfsck() was used to fix them, but that ");
fprintf(stderr, "shouldn't happen.\n");
return 1;
}
return 0;
}
check_exe(char *name)
{
int file;
Vlib ev;
int ok;
if ((file = jopen(name, 0)) == 0)
{
cant_find(name);
return(0);
}
ok = verify_exe_head(file, &ev.eh);
jclose(file);
return(ok);
}
int main(void)
{
int r;
jfs_t *file;
struct jtrans *trans;
struct jfsck_result result;
/* check the file is OK */
jfsck(FILENAME, NULL, &result, 0);
/* and open it */
file = jopen(FILENAME, O_RDWR | O_CREAT | O_TRUNC, 0600, 0);
if (file == NULL) {
perror("jopen");
return 1;
}
/* write two "Hello world"s next to each other */
trans = jtrans_new(file, 0);
jtrans_add_w(trans, TEXT, strlen(TEXT), 0);
jtrans_add_w(trans, TEXT, strlen(TEXT), strlen(TEXT));
r = jtrans_commit(trans);
if (r < 0) {
perror("jtrans_commit");
return 1;
}
/* at this point the file has "Hello world!\nHello world!\n" */
/* now we rollback */
r = jtrans_rollback(trans);
if (r < 0) {
perror("jtrans_rollback");
return 1;
}
/* and now the file is empty! */
jtrans_free(trans);
jclose(file);
return 0;
}
int main(int argc, char **argv)
{
int rv;
jfs_t *fs;
jtrans_t *ts;
fs = jopen("test3", O_RDWR | O_CREAT, 0660, 0);
if (fs == NULL)
perror("jopen()");
ts = jtrans_new(fs, 0);
if (ts == NULL)
perror("jtrans_new()");
#define str1 "1ROLLBACKTEST1!\n"
jtrans_add_w(ts, str1, strlen(str1), 0);
#define str2 "2ROLLBACKTEST2!\n"
jtrans_add_w(ts, str2, strlen(str2), strlen(str1));
#define str3 "3ROLLBACKTEST3!\n"
jtrans_add_w(ts, str3, strlen(str3), strlen(str1) + strlen(str2));
rv = jtrans_commit(ts);
if (rv < 0)
perror("jtrans_commit()");
printf("commit ok: %d\n", rv);
rv = jtrans_rollback(ts);
if (rv < 0)
perror("jtrans_rollback()");
printf("rollback ok: %d\n", rv);
jtrans_free(ts);
if (jclose(fs))
perror("jclose()");
return 0;
}
/* fopen() wrapper */
struct jfs *jfopen(const char *path, const char *mode)
{
int flags;
int pos_at_the_beginning;
struct jfs *fs;
if (strlen(mode) < 1)
return NULL;
if (mode[0] == 'r') {
pos_at_the_beginning = 1;
if (strlen(mode) > 1 && strchr(mode, '+'))
flags = O_RDWR;
else
flags = O_RDONLY;
} else if (mode[0] == 'a') {
if (strlen(mode) > 1 && strchr(mode, '+'))
pos_at_the_beginning = 1;
else
pos_at_the_beginning = 0;
flags = O_RDWR | O_CREAT | O_APPEND;
} else if (mode[0] == 'w') {
pos_at_the_beginning = 1;
flags = O_RDWR | O_CREAT | O_TRUNC;
} else {
return NULL;
}
fs = jopen(path, flags, 0666, 0);
if (fs == NULL)
return NULL;
if (pos_at_the_beginning)
lseek(fs->fd, 0, SEEK_SET);
else
lseek(fs->fd, 0, SEEK_END);
return fs;
}
void *load_exe(char *filename, Exe_head *eh)
{
long retval;
char *alligned_buf;
char *alloc_buf = NULL;
long (*rfunc)();
unsigned long code_offset;
unsigned long init_size;
unsigned long bss_size;
unsigned long total_size;
void *v;
unsigned long fixup_offset;
UWORD fixup[2];
UWORD *segpt;
UWORD code_seg;
int f;
unsigned i;
int ok = 0;
if ((f = jopen(filename, JREADONLY)) == 0)
{
cant_find(filename);
return(NULL);
}
if (!verify_exe_head(f, eh))
goto OUT;
code_offset = eh->head_size;
code_offset *= 16; /* make it a paragraph */
init_size = eh->blocks;
init_size *= 512;
init_size += eh->mod512;
if (eh->mod512 != 0)
init_size -= 512;
init_size -= code_offset;
bss_size = eh->min_data;
bss_size *= 16;
total_size = init_size + bss_size;
if ((alloc_buf = begmem((unsigned)total_size+16)) == NULL)
goto OUT;
code_seg = ptr_seg(alloc_buf) + 1;
alligned_buf = make_ptr(0, code_seg);
zero_structure(alligned_buf, (unsigned)total_size);
jseek(f, code_offset, JSEEK_START);
if (jread(f, alligned_buf, init_size) < init_size)
{
truncated(filename);
goto OUT;
}
v = alligned_buf;
eh->entry_point = v;
if (eh->reloc_count > 0)
{
fixup_offset = eh->reloc_list;
jseek(f, fixup_offset, JSEEK_START);
for (i=0; i<eh->reloc_count; i++)
{
if (jread(f, fixup, sizeof(fixup)) != sizeof(fixup))
{
truncated(filename);
goto OUT;
}
segpt = make_ptr(fixup[0], code_seg + fixup[1]);
segpt[0] += code_seg;
}
}
ok = 1;
OUT:
if (!ok)
{
gentle_freemem(alloc_buf);
alloc_buf = NULL;
}
jclose(f);
return(alloc_buf);
}
