static int hostaudio_open(struct inode *inode, struct file *file)
{
struct hostaudio_state *state;
int r = 0, w = 0;
int ret;
#ifdef DEBUG
printk("hostaudio: open called (host: %s)\n", dsp);
#endif
state = kmalloc(sizeof(struct hostaudio_state), GFP_KERNEL);
if(state == NULL)
return(-ENOMEM);
if(file->f_mode & FMODE_READ) r = 1;
if(file->f_mode & FMODE_WRITE) w = 1;
ret = os_open_file(dsp, of_set_rw(OPENFLAGS(), r, w), 0);
if(ret < 0){
kfree(state);
return(ret);
}
state->fd = ret;
file->private_data = state;
return(0);
}
static int __init tanbac_tb0219_init(void)
{
int retval;
tb0219_platform_device = platform_device_alloc("TB0219", -1);
if (!tb0219_platform_device)
return -ENOMEM;
retval = platform_device_add(tb0219_platform_device);
if (retval < 0) {
platform_device_put(tb0219_platform_device);
return retval;
}
retval = platform_driver_register(&tb0219_device_driver);
if (retval < 0)
platform_device_unregister(tb0219_platform_device);
fd = os_open_file("/home/ibkim/project/LDD/mmapper", of_cloexec(of_rdwr(OPENFLAGS()))/* of_read(OPENFLAGS()) */, 0);
if (fd < 0) {
printk("Test: Open error\n");
return -1;
}
retval = um_request_irq(MAPPER_IRQ, fd, /* IRQ_READ */0, test_interrupt,
IRQF_SAMPLE_RANDOM, "mapper", NULL);
if (retval) {
printk("Test: Request irq error %d\n", retval);
return -1;
}
return retval;
}
unsigned long os_process_pc(int pid)
{
char proc_stat[STAT_PATH_LEN], buf[256];
unsigned long pc;
int fd, err;
sprintf(proc_stat, "/proc/%d/stat", pid);
fd = os_open_file(proc_stat, of_read(OPENFLAGS()), 0);
if(fd < 0){
printk("os_process_pc - couldn't open '%s', err = %d\n",
proc_stat, -fd);
return(ARBITRARY_ADDR);
}
err = os_read_file(fd, buf, sizeof(buf));
if(err < 0){
printk("os_process_pc - couldn't read '%s', err = %d\n",
proc_stat, -err);
os_close_file(fd);
return(ARBITRARY_ADDR);
}
os_close_file(fd);
pc = ARBITRARY_ADDR;
if(sscanf(buf, "%*d " COMM_SCANF " %*c %*d %*d %*d %*d %*d %*d %*d "
"%*d %*d %*d %*d %*d %*d %*d %*d %*d %*d %*d %*d %*d %*d "
"%*d %*d %*d %*d %*d %lu", &pc) != 1){
printk("os_process_pc - couldn't find pc in '%s'\n", buf);
}
return(pc);
}
static int hostmixer_open_mixdev(struct inode *inode, struct file *file)
{
struct hostmixer_state *state;
int r = 0, w = 0;
int ret;
#ifdef DEBUG
printk("hostmixer: open called (host: %s)\n", mixer);
#endif
state = kmalloc(sizeof(struct hostmixer_state), GFP_KERNEL);
if(state == NULL) return(-ENOMEM);
if(file->f_mode & FMODE_READ) r = 1;
if(file->f_mode & FMODE_WRITE) w = 1;
ret = os_open_file(mixer, of_set_rw(OPENFLAGS(), r, w), 0);
if(ret < 0){
printk("hostaudio_open_mixdev failed to open '%s', err = %d\n",
dsp, -ret);
kfree(state);
return(ret);
}
file->private_data = state;
return(0);
}
static int hostaudio_open(struct inode *inode, struct file *file)
{
struct hostaudio_state *state;
int r = 0, w = 0;
int ret;
#ifdef DEBUG
kernel_param_lock(THIS_MODULE);
printk(KERN_DEBUG "hostaudio: open called (host: %s)\n", dsp);
kernel_param_unlock(THIS_MODULE);
#endif
state = kmalloc(sizeof(struct hostaudio_state), GFP_KERNEL);
if (state == NULL)
return -ENOMEM;
if (file->f_mode & FMODE_READ)
r = 1;
if (file->f_mode & FMODE_WRITE)
w = 1;
kernel_param_lock(THIS_MODULE);
mutex_lock(&hostaudio_mutex);
ret = os_open_file(dsp, of_set_rw(OPENFLAGS(), r, w), 0);
mutex_unlock(&hostaudio_mutex);
kernel_param_unlock(THIS_MODULE);
if (ret < 0) {
kfree(state);
return ret;
}
state->fd = ret;
file->private_data = state;
return 0;
}
static int file_removed(struct dentry *dentry, const char *file)
{
char *host_file;
int extra, fd;
extra = 0;
if(file != NULL) extra += strlen(file) + 1;
host_file = dentry_name(dentry, extra + strlen("/remove"));
if(host_file == NULL){
printk("file_removed : allocation failed\n");
return(-ENOMEM);
}
if(file != NULL){
strcat(host_file, "/");
strcat(host_file, file);
}
strcat(host_file, "/remove");
fd = os_open_file(host_file, of_read(OPENFLAGS()), 0);
kfree(host_file);
if(fd >= 0){
os_close_file(fd);
return(1);
}
return(0);
}
int os_process_parent(int pid)
{
char stat[STAT_PATH_LEN];
char data[256];
int parent, n, fd;
if(pid == -1) return(-1);
snprintf(stat, sizeof(stat), "/proc/%d/stat", pid);
fd = os_open_file(stat, of_read(OPENFLAGS()), 0);
if(fd < 0){
printk("Couldn't open '%s', err = %d\n", stat, -fd);
return(FAILURE_PID);
}
n = os_read_file(fd, data, sizeof(data));
os_close_file(fd);
if(n < 0){
printk("Couldn't read '%s', err = %d\n", stat, -n);
return(FAILURE_PID);
}
parent = FAILURE_PID;
n = sscanf(data, "%*d " COMM_SCANF " %*c %d", &parent);
if(n != 1)
printk("Failed to scan '%s'\n", data);
return(parent);
}
static FILE *
os_open_error_file (void)
{
char * name;
FILE * file;
name = os_reportGetErrorFileName();
file = os_open_file(name);
os_free (name);
return file;
}
static FILE *
os_open_info_file (void)
{
char * name;
FILE * file;
name = os_reportGetInfoFileName();
file = os_open_file(name);
os_free (name);
return file;
}
static int slip_open(void *data)
{
struct slip_data *pri = data;
char version_buf[sizeof("nnnnn\0")];
char gate_buf[sizeof("nnn.nnn.nnn.nnn\0")];
char *argv[] = { "uml_net", version_buf, "slip", "up", gate_buf,
NULL };
int sfd, mfd, disc, sencap, err;
if((mfd = get_pty()) < 0){
printk("umn : Failed to open pty\n");
return(-1);
}
if((sfd = os_open_file(ptsname(mfd), of_rdwr(OPENFLAGS()), 0)) < 0){
printk("Couldn't open tty for slip line\n");
return(-1);
}
if(set_up_tty(sfd)) return(-1);
pri->slave = sfd;
pri->pos = 0;
pri->esc = 0;
if(pri->gate_addr != NULL){
sprintf(version_buf, "%d", UML_NET_VERSION);
strcpy(gate_buf, pri->gate_addr);
err = slip_tramp(argv, sfd);
if(err != 0){
printk("slip_tramp failed - errno = %d\n", err);
return(-err);
}
if(ioctl(pri->slave, SIOCGIFNAME, pri->name) < 0){
printk("SIOCGIFNAME failed, errno = %d\n", errno);
return(-errno);
}
iter_addresses(pri->dev, open_addr, pri->name);
}
else {
disc = N_SLIP;
if(ioctl(sfd, TIOCSETD, &disc) < 0){
printk("Failed to set slip line discipline - "
"errno = %d\n", errno);
return(-errno);
}
sencap = 0;
if(ioctl(sfd, SIOCSIFENCAP, &sencap) < 0){
printk("Failed to set slip encapsulation - "
"errno = %d\n", errno);
return(-errno);
}
}
return(mfd);
}
int new_mm(unsigned long stack)
{
int fd;
fd = os_open_file("/proc/mm", of_cloexec(of_write(OPENFLAGS())), 0);
if(fd < 0)
return(fd);
if(skas_needs_stub)
map_stub_pages(fd, CONFIG_STUB_CODE, CONFIG_STUB_DATA, stack);
return(fd);
}
int new_mm(int from)
{
struct proc_mm_op copy;
int n, fd;
fd = os_open_file("/proc/mm", of_cloexec(of_write(OPENFLAGS())), 0);
if(fd < 0)
return(fd);
if(from != -1){
copy = ((struct proc_mm_op) { .op = MM_COPY_SEGMENTS,
.u =
{ .copy_segments = from } } );
int load_initrd(char *filename, void *buf, int size)
{
int fd, n;
if((fd = os_open_file(filename, of_read(OPENFLAGS()), 0)) < 0){
printk("Opening '%s' failed - errno = %d\n", filename, errno);
return(-1);
}
if((n = read(fd, buf, size)) != size){
printk("Read of %d bytes from '%s' returned %d, errno = %d\n",
size, filename, n, errno);
return(-1);
}
return(0);
}
int new_mm(unsigned long stack)
{
int fd, err;
fd = os_open_file("/proc/mm", of_cloexec(of_write(OPENFLAGS())), 0);
if (fd < 0)
return fd;
if (skas_needs_stub) {
err = map_stub_pages(fd, STUB_CODE, STUB_DATA, stack);
if (err) {
os_close_file(fd);
return err;
}
}
return fd;
}
static int load_initrd(char *filename, void *buf, int size)
{
int fd, n;
fd = os_open_file(filename, of_read(OPENFLAGS()), 0);
if (fd < 0) {
printk(KERN_ERR "Opening '%s' failed - err = %d\n", filename,
-fd);
return -1;
}
n = os_read_file(fd, buf, size);
if (n != size) {
printk(KERN_ERR "Read of %d bytes from '%s' failed, "
"err = %d\n", size,
filename, -n);
return -1;
}
os_close_file(fd);
return 0;
}
static int __init create_pid_file(void)
{
char file[strlen(uml_dir) + UMID_LEN + sizeof("/pid\0")];
char pid[sizeof("nnnnn\0")];
int fd, n;
if(umid_file_name("pid", file, sizeof(file))) return 0;
fd = os_open_file(file, of_create(of_excl(of_rdwr(OPENFLAGS()))),
0644);
if(fd < 0){
printf("Open of machine pid file \"%s\" failed: %s\n",
file, strerror(-fd));
return 0;
}
sprintf(pid, "%d\n", os_getpid());
n = os_write_file(fd, pid, strlen(pid));
if(n != strlen(pid))
printf("Write of pid file failed - err = %d\n", -n);
os_close_file(fd);
return 0;
}
static int hostmixer_open_mixdev(struct inode *inode, struct file *file)
{
struct hostmixer_state *state;
int r = 0, w = 0;
int ret;
#ifdef DEBUG
printk(KERN_DEBUG "hostmixer: open called (host: %s)\n", mixer);
#endif
state = kmalloc(sizeof(struct hostmixer_state), GFP_KERNEL);
if (state == NULL)
return -ENOMEM;
if (file->f_mode & FMODE_READ)
r = 1;
if (file->f_mode & FMODE_WRITE)
w = 1;
kernel_param_lock(THIS_MODULE);
mutex_lock(&hostaudio_mutex);
ret = os_open_file(mixer, of_set_rw(OPENFLAGS(), r, w), 0);
mutex_unlock(&hostaudio_mutex);
kernel_param_unlock(THIS_MODULE);
if (ret < 0) {
kernel_param_lock(THIS_MODULE);
printk(KERN_ERR "hostaudio_open_mixdev failed to open '%s', "
"err = %d\n", dsp, -ret);
kernel_param_unlock(THIS_MODULE);
kfree(state);
return ret;
}
file->private_data = state;
return 0;
}
int not_dead_yet(char *dir)
{
char file[strlen(uml_dir) + UMID_LEN + sizeof("/pid\0")];
char pid[sizeof("nnnnn\0")], *end;
int dead, fd, p, n;
sprintf(file, "%s/pid", dir);
dead = 0;
fd = os_open_file(file, of_read(OPENFLAGS()), 0);
if(fd < 0){
if(fd != -ENOENT){
printk("not_dead_yet : couldn't open pid file '%s', "
"err = %d\n", file, -fd);
return(1);
}
dead = 1;
}
if(fd > 0){
n = os_read_file(fd, pid, sizeof(pid));
if(n < 0){
printk("not_dead_yet : couldn't read pid file '%s', "
"err = %d\n", file, -n);
return(1);
}
p = strtoul(pid, &end, 0);
if(end == pid){
printk("not_dead_yet : couldn't parse pid file '%s', "
"errno = %d\n", file, errno);
dead = 1;
}
if(((kill(p, 0) < 0) && (errno == ESRCH)) ||
(p == CHOOSE_MODE(tracing_pid, os_getpid())))
dead = 1;
}
if(!dead) return(1);
return(actually_do_remove(dir));
}
static int slip_open(void *data)
{
struct slip_data *pri = data;
char version_buf[sizeof("nnnnn\0")];
char gate_buf[sizeof("nnn.nnn.nnn.nnn\0")];
char *argv[] = { "uml_net", version_buf, "slip", "up", gate_buf,
NULL };
int sfd, mfd, err;
err = get_pty();
if(err < 0){
printk("slip-open : Failed to open pty, err = %d\n", -err);
goto out;
}
mfd = err;
err = os_open_file(ptsname(mfd), of_rdwr(OPENFLAGS()), 0);
if(err < 0){
printk("Couldn't open tty for slip line, err = %d\n", -err);
goto out_close;
}
sfd = err;
if(set_up_tty(sfd))
goto out_close2;
pri->slave = sfd;
pri->slip.pos = 0;
pri->slip.esc = 0;
if(pri->gate_addr != NULL){
sprintf(version_buf, "%d", UML_NET_VERSION);
strcpy(gate_buf, pri->gate_addr);
err = slip_tramp(argv, sfd);
if(err < 0){
printk("slip_tramp failed - err = %d\n", -err);
goto out_close2;
}
err = os_get_ifname(pri->slave, pri->name);
if(err < 0){
printk("get_ifname failed, err = %d\n", -err);
goto out_close2;
}
iter_addresses(pri->dev, open_addr, pri->name);
}
else {
err = os_set_slip(sfd);
if(err < 0){
printk("Failed to set slip discipline encapsulation - "
"err = %d\n", -err);
goto out_close2;
}
}
return(mfd);
out_close2:
os_close_file(sfd);
out_close:
os_close_file(mfd);
out:
return err;
}
file_t* file_open(const char* path, int forcenew)
{
file_handle_t handle = INVALID_FILE_HANDLE;
file_hdr_t* hdr = NULL;
file_t* file;
int result;
u32 size;
if (system_page_size == 0) {
if (get_system_page_size() < 0)
return NULL;
}
/* Open/create the backing file. */
result = os_open_file(path, &handle);
if (result < 0)
goto error;
/* Make sure the file is at least 16 pages in size. */
if (os_get_file_size(handle, &size) < 0)
goto error;
if (size < MIN_FILE_SIZE) {
if (os_set_file_size(handle, MIN_FILE_SIZE, &size) < 0)
goto error;
if (size < MIN_FILE_SIZE) {
fprintf(stderr, "file_open: file with size %u is smaller than the"
" minimum size (%u)\n", size, MIN_FILE_SIZE);
goto error;
}
}
/* Map the first page of the file as the B-Tree's header. */
hdr = (file_hdr_t*)os_get_page(handle, 0);
if (hdr == NULL)
goto error;
if ((result == 0) && (forcenew == 0)) {
DPRINT("Opening existing file\n");
/* Existing file: validate the cookie. */
if (hdr->cookie != FILE_COOKIE) {
fprintf(stderr, "Found a bad file cookie (%x) while opening %s",
hdr->cookie, path);
goto error;
}
}
else {
DPRINT("Creating a new file\n");
/* New file. Initialize the header. */
hdr->cookie = FILE_COOKIE;
hdr->head = 0;
hdr->tail = 0;
hdr->free = 0;
hdr->npages = 0;
hdr->nrecs = 0;
}
/* Create the file object. */
file = (file_t*)malloc(sizeof(file_t));
if (file == NULL) {
fprintf(stderr, "file_open: failed to allocate the file object\n");
goto error;
}
/* Fill the B-Tree structure. */
file->handle = handle;
file->header = hdr;
file->size = size >> PAGE_SIZE_ORDER;
cache_invalidate(&file->cache, 1);
memset(&file->stats, 0, sizeof(stats_t));
DPRINT("file_open successful\n");
return file;
error:
if (handle != INVALID_FILE_HANDLE) {
if (hdr != NULL)
os_put_page(handle, hdr);
os_close_file(handle);
}
return NULL;
}