{
my_puts("Using a channel type which is configured out of "
"UML\n");
- return(NULL);
+ return NULL;
}
static int not_configged_open(int input, int output, int primary, void *data,
{
my_puts("Using a channel type which is configured out of "
"UML\n");
- return(-ENODEV);
+ return -ENODEV;
}
static void not_configged_close(int fd, void *data)
{
my_puts("Using a channel type which is configured out of "
"UML\n");
- return(-EIO);
+ return -EIO;
}
static int not_configged_write(int fd, const char *buf, int len, void *data)
{
my_puts("Using a channel type which is configured out of "
"UML\n");
- return(-EIO);
+ return -EIO;
}
static int not_configged_console_write(int fd, const char *buf, int len)
{
my_puts("Using a channel type which is configured out of "
"UML\n");
- return(-EIO);
+ return -EIO;
}
static int not_configged_window_size(int fd, void *data, unsigned short *rows,
{
my_puts("Using a channel type which is configured out of "
"UML\n");
- return(-ENODEV);
+ return -ENODEV;
}
static void not_configged_free(void *data)
n = os_read_file(fd, c_out, sizeof(*c_out));
if(n == -EAGAIN)
- return(0);
+ return 0;
else if(n == 0)
- return(-EIO);
- return(n);
+ return -EIO;
+ return n;
}
/* XXX Trivial wrapper around os_write_file */
int generic_write(int fd, const char *buf, int n, void *unused)
{
- return(os_write_file(fd, buf, n));
+ return os_write_file(fd, buf, n);
}
int generic_window_size(int fd, void *unused, unsigned short *rows_out,
ret = os_window_size(fd, &rows, &cols);
if(ret < 0)
- return(ret);
+ return ret;
ret = ((*rows_out != rows) || (*cols_out != cols));
*rows_out = rows;
*cols_out = cols;
- return(ret);
+ return ret;
}
void generic_free(void *data)
}
}
- if((tty->flip.flag_buf_ptr == NULL) ||
+ if((tty->flip.flag_buf_ptr == NULL) ||
(tty->flip.char_buf_ptr == NULL))
return;
tty_insert_flip_char(tty, ch, TTY_NORMAL);
}
-static int open_one_chan(struct chan *chan, int input, int output, int primary)
+static int open_one_chan(struct chan *chan)
{
int fd;
- if(chan->opened) return(0);
- if(chan->ops->open == NULL) fd = 0;
- else fd = (*chan->ops->open)(input, output, primary, chan->data,
- &chan->dev);
- if(fd < 0) return(fd);
+ if(chan->opened)
+ return 0;
+
+ if(chan->ops->open == NULL)
+ fd = 0;
+ else fd = (*chan->ops->open)(chan->input, chan->output, chan->primary,
+ chan->data, &chan->dev);
+ if(fd < 0)
+ return fd;
chan->fd = fd;
chan->opened = 1;
- return(0);
+ return 0;
}
int open_chan(struct list_head *chans)
list_for_each(ele, chans){
chan = list_entry(ele, struct chan, list);
- ret = open_one_chan(chan, chan->input, chan->output,
- chan->primary);
- if(chan->primary) err = ret;
+ ret = open_one_chan(chan);
+ if(chan->primary)
+ err = ret;
}
- return(err);
+ return err;
}
void chan_enable_winch(struct list_head *chans, struct tty_struct *tty)
}
}
-int write_chan(struct list_head *chans, const char *buf, int len,
+int write_chan(struct list_head *chans, const char *buf, int len,
int write_irq)
{
struct list_head *ele;
reactivate_fd(chan->fd, write_irq);
}
}
- return(ret);
+ return ret;
}
int console_write_chan(struct list_head *chans, const char *buf, int len)
n = chan->ops->console_write(chan->fd, buf, len);
if(chan->primary) ret = n;
}
- return(ret);
+ return ret;
}
-int console_open_chan(struct line *line, struct console *co, struct chan_opts *opts)
+int console_open_chan(struct line *line, struct console *co,
+ struct chan_opts *opts)
{
if (!list_empty(&line->chan_list))
return 0;
list_for_each(ele, chans){
chan = list_entry(ele, struct chan, list);
if(chan->primary){
- if(chan->ops->window_size == NULL) return(0);
- return(chan->ops->window_size(chan->fd, chan->data,
- rows_out, cols_out));
+ if(chan->ops->window_size == NULL)
+ return 0;
+ return chan->ops->window_size(chan->fd, chan->data,
+ rows_out, cols_out);
}
}
- return(0);
+ return 0;
}
void free_one_chan(struct chan *chan)
if(chan == NULL){
CONFIG_CHUNK(str, size, n, "none", 1);
- return(n);
+ return n;
}
CONFIG_CHUNK(str, size, n, chan->ops->type, 0);
if(chan->dev == NULL){
CONFIG_CHUNK(str, size, n, "", 1);
- return(n);
+ return n;
}
CONFIG_CHUNK(str, size, n, ":", 0);
CONFIG_CHUNK(str, size, n, chan->dev, 0);
- return(n);
+ return n;
}
-static int chan_pair_config_string(struct chan *in, struct chan *out,
+static int chan_pair_config_string(struct chan *in, struct chan *out,
char *str, int size, char **error_out)
{
int n;
if(in == out){
CONFIG_CHUNK(str, size, n, "", 1);
- return(n);
+ return n;
}
CONFIG_CHUNK(str, size, n, ",", 1);
size -= n;
CONFIG_CHUNK(str, size, n, "", 1);
- return(n);
+ return n;
}
-int chan_config_string(struct list_head *chans, char *str, int size,
+int chan_config_string(struct list_head *chans, char *str, int size,
char **error_out)
{
struct list_head *ele;
out = chan;
}
- return(chan_pair_config_string(in, out, str, size, error_out));
+ return chan_pair_config_string(in, out, str, size, error_out);
}
struct chan_type {
#endif
};
-static struct chan *parse_chan(char *str, int pri, int device,
+static struct chan *parse_chan(char *str, int pri, int device,
struct chan_opts *opts)
{
struct chan_type *entry;
if(ops == NULL){
my_printf("parse_chan couldn't parse \"%s\"\n",
str);
- return(NULL);
+ return NULL;
}
- if(ops->init == NULL) return(NULL);
+ if(ops->init == NULL)
+ return NULL;
data = (*ops->init)(str, device, opts);
- if(data == NULL) return(NULL);
+ if(data == NULL)
+ return NULL;
chan = kmalloc(sizeof(*chan), GFP_ATOMIC);
- if(chan == NULL) return(NULL);
+ if(chan == NULL)
+ return NULL;
*chan = ((struct chan) { .list = LIST_HEAD_INIT(chan->list),
.primary = 1,
.input = 0,
.pri = pri,
.ops = ops,
.data = data });
- return(chan);
+ return chan;
}
int parse_chan_pair(char *str, struct list_head *chans, int pri, int device,
if(!list_empty(chans)){
chan = list_entry(chans->next, struct chan, list);
- if(chan->pri >= pri) return(0);
+ if(chan->pri >= pri)
+ return 0;
free_chan(chans);
INIT_LIST_HEAD(chans);
}
*out = '\0';
out++;
new = parse_chan(in, pri, device, opts);
- if(new == NULL) return(-1);
+ if(new == NULL)
+ return -1;
+
new->input = 1;
list_add(&new->list, chans);
new = parse_chan(out, pri, device, opts);
- if(new == NULL) return(-1);
+ if(new == NULL)
+ return -1;
+
list_add(&new->list, chans);
new->output = 1;
}
else {
new = parse_chan(str, pri, device, opts);
- if(new == NULL) return(-1);
+ if(new == NULL)
+ return -1;
+
list_add(&new->list, chans);
new->input = 1;
new->output = 1;
}
- return(0);
+ return 0;
}
int chan_out_fd(struct list_head *chans)
list_for_each(ele, chans){
chan = list_entry(ele, struct chan, list);
if(chan->primary && chan->output)
- return(chan->fd);
+ return chan->fd;
}
- return(-1);
+ return -1;
}
void chan_interrupt(struct list_head *chans, struct work_struct *task,
chan = list_entry(ele, struct chan, list);
if(!chan->input || (chan->ops->read == NULL)) continue;
do {
- if((tty != NULL) &&
+ if((tty != NULL) &&
(tty->flip.count >= TTY_FLIPBUF_SIZE)){
schedule_work(task);
goto out;
if (len < end){
memcpy(line->tail, buf, len);
line->tail += len;
- } else {
+ }
+ else {
/* The circular buffer is wrapping */
memcpy(line->tail, buf, end);
buf += end;
}
count = line->tail - line->head;
- n = write_chan(&line->chan_list, line->head, count,
+ n = write_chan(&line->chan_list, line->head, count,
line->driver->write_irq);
if(n < 0)
if (err <= 0 && (err != -EAGAIN || !ret))
ret = err;
} else {
- n = write_chan(&line->chan_list, buf, len,
+ n = write_chan(&line->chan_list, buf, len,
line->driver->write_irq);
if (n < 0) {
ret = n;
if (input)
err = um_request_irq(driver->read_irq, fd, IRQ_READ,
- line_interrupt, flags,
+ line_interrupt, flags,
driver->read_irq_name, tty);
if (err)
return err;
if (output)
err = um_request_irq(driver->write_irq, fd, IRQ_WRITE,
- line_write_interrupt, flags,
+ line_write_interrupt, flags,
driver->write_irq_name, tty);
line->have_irq = 1;
return err;
/* We said con=/ssl= instead of con#=, so we are configuring all
* consoles at once.*/
n = -1;
- } else {
+ }
+ else {
n = simple_strtoul(init, &end, 0);
if(*end != '='){
- printk(KERN_ERR "line_setup failed to parse \"%s\"\n",
+ printk(KERN_ERR "line_setup failed to parse \"%s\"\n",
init);
return 0;
}
printk("line_setup - %d out of range ((0 ... %d) allowed)\n",
n, num - 1);
return 0;
- } else if (n >= 0){
+ }
+ else if (n >= 0){
if (lines[n].count > 0) {
printk("line_setup - device %d is open\n", n);
return 0;
lines[n].valid = 1;
}
}
- } else if(!all_allowed){
+ }
+ else if(!all_allowed){
printk("line_setup - can't configure all devices from "
"mconsole\n");
return 0;
- } else {
+ }
+ else {
for(i = 0; i < num; i++){
if(lines[i].init_pri <= INIT_ALL){
lines[i].init_pri = INIT_ALL;
}
struct tty_driver *line_register_devfs(struct lines *set,
- struct line_driver *line_driver,
+ struct line_driver *line_driver,
struct tty_operations *ops, struct line *lines,
int nlines)
{
}
for(i = 0; i < nlines; i++){
- if(!lines[i].valid)
+ if(!lines[i].valid)
tty_unregister_device(driver, i);
}
line = &lines[i];
INIT_LIST_HEAD(&line->chan_list);
spin_lock_init(&line->lock);
- if(line->init_str != NULL){
- line->init_str = kstrdup(line->init_str, GFP_KERNEL);
- if(line->init_str == NULL)
- printk("lines_init - kstrdup returned NULL\n");
- }
+ if(line->init_str == NULL)
+ continue;
+
+ line->init_str = kstrdup(line->init_str, GFP_KERNEL);
+ if(line->init_str == NULL)
+ printk("lines_init - kstrdup returned NULL\n");
}
}
tty = winch->tty;
if (tty != NULL) {
line = tty->driver_data;
- chan_window_size(&line->chan_list,
- &tty->winsize.ws_row,
+ chan_window_size(&line->chan_list, &tty->winsize.ws_row,
&tty->winsize.ws_col);
kill_pg(tty->pgrp, SIGWINCH, 1);
}
spin_unlock(&winch_handler_lock);
if(um_request_irq(WINCH_IRQ, fd, IRQ_READ, winch_interrupt,
- SA_INTERRUPT | SA_SHIRQ | SA_SAMPLE_RANDOM,
+ SA_INTERRUPT | SA_SHIRQ | SA_SAMPLE_RANDOM,
"winch", winch) < 0)
printk("register_winch_irq - failed to register IRQ\n");
}
deactivate_fd(winch->fd, WINCH_IRQ);
os_close_file(winch->fd);
}
- if(winch->pid != -1)
+ if(winch->pid != -1)
os_kill_process(winch->pid, 1);
}
}
#include "irq_kern.h"
#include "choose-mode.h"
-static int do_unlink_socket(struct notifier_block *notifier,
+static int do_unlink_socket(struct notifier_block *notifier,
unsigned long what, void *data)
{
return(mconsole_unlink_socket());
.priority = 0,
};
-/* Safe without explicit locking for now. Tasklets provide their own
+/* Safe without explicit locking for now. Tasklets provide their own
* locking, and the interrupt handler is safe because it can't interrupt
* itself and it can only happen on CPU 0.
*/
while(!list_empty(&mc_requests)){
local_save_flags(flags);
- req = list_entry(mc_requests.next, struct mconsole_entry,
+ req = list_entry(mc_requests.next, struct mconsole_entry,
list);
list_del(&req->list);
local_irq_restore(flags);
{
char version[256];
- sprintf(version, "%s %s %s %s %s", system_utsname.sysname,
- system_utsname.nodename, system_utsname.release,
+ sprintf(version, "%s %s %s %s %s", system_utsname.sysname,
+ system_utsname.nodename, system_utsname.release,
system_utsname.version, system_utsname.machine);
mconsole_reply(req, version, 0, 0);
}
#define CONFIG_BUF_SIZE 64
-static void mconsole_get_config(int (*get_config)(char *, char *, int,
+static void mconsole_get_config(int (*get_config)(char *, char *, int,
char **),
struct mc_request *req, char *name)
{
out:
if(buf != default_buf)
kfree(buf);
-
}
void mconsole_config(struct mc_request *req)
void mconsole_remove(struct mc_request *req)
{
- struct mc_device *dev;
+ struct mc_device *dev;
char *ptr = req->request.data, *err_msg = "";
char error[256];
int err, start, end, n;
/* Changed by mconsole_setup, which is __setup, and called before SMP is
* active.
*/
-static char *notify_socket = NULL;
+static char *notify_socket = NULL;
int mconsole_init(void)
{
notify_socket = kstrdup(notify_socket, GFP_KERNEL);
if(notify_socket != NULL)
mconsole_notify(notify_socket, MCONSOLE_SOCKET,
- mconsole_socket_name,
+ mconsole_socket_name,
strlen(mconsole_socket_name) + 1);
else printk(KERN_ERR "mconsole_setup failed to strdup "
"string\n");
}
- printk("mconsole (version %d) initialized on %s\n",
+ printk("mconsole (version %d) initialized on %s\n",
MCONSOLE_VERSION, mconsole_socket_name);
return(0);
}
char *buf;
buf = kmalloc(count + 1, GFP_KERNEL);
- if(buf == NULL)
+ if(buf == NULL)
return(-ENOMEM);
if(copy_from_user(buf, buffer, count)){
if(notify_socket == NULL) return(0);
- mconsole_notify(notify_socket, MCONSOLE_PANIC, message,
+ mconsole_notify(notify_socket, MCONSOLE_PANIC, message,
strlen(message) + 1);
return(0);
}
.name = "ssl",
.config = ssl_config,
.get_config = ssl_get_config,
- .id = line_id,
+ .id = line_id,
.remove = ssl_remove,
},
};
static int ssl_config(char *str)
{
- return(line_config(serial_lines,
- sizeof(serial_lines)/sizeof(serial_lines[0]), str));
+ return line_config(serial_lines,
+ sizeof(serial_lines)/sizeof(serial_lines[0]), str);
}
static int ssl_get_config(char *dev, char *str, int size, char **error_out)
{
- return(line_get_config(dev, serial_lines,
- sizeof(serial_lines)/sizeof(serial_lines[0]),
- str, size, error_out));
+ return line_get_config(dev, serial_lines,
+ sizeof(serial_lines)/sizeof(serial_lines[0]),
+ str, size, error_out);
}
static int ssl_remove(int n)
{
- return line_remove(serial_lines,
- sizeof(serial_lines)/sizeof(serial_lines[0]), n);
+ return line_remove(serial_lines,
+ sizeof(serial_lines)/sizeof(serial_lines[0]), n);
}
int ssl_open(struct tty_struct *tty, struct file *filp)
{
struct line *line = &serial_lines[co->index];
- return console_open_chan(line,co,&opts);
+ return console_open_chan(line, co, &opts);
}
static struct console ssl_cons = {
{
char *new_title;
- printk(KERN_INFO "Initializing software serial port version %d\n",
+ printk(KERN_INFO "Initializing software serial port version %d\n",
ssl_version);
ssl_driver = line_register_devfs(&lines, &driver, &ssl_ops,
- serial_lines, ARRAY_SIZE(serial_lines));
+ serial_lines,
+ ARRAY_SIZE(serial_lines));
lines_init(serial_lines, sizeof(serial_lines)/sizeof(serial_lines[0]));
ssl_init_done = 1;
register_console(&ssl_cons);
- return(0);
+ return 0;
}
late_initcall(ssl_init);
static int ssl_chan_setup(char *str)
{
- return(line_setup(serial_lines,
+ return line_setup(serial_lines,
sizeof(serial_lines)/sizeof(serial_lines[0]),
- str, 1));
+ str, 1);
}
__setup("ssl", ssl_chan_setup);
.name = "con",
.config = con_config,
.get_config = con_get_config,
- .id = line_id,
+ .id = line_id,
.remove = con_remove,
},
};
* individual elements are protected by individual semaphores.
*/
struct line vts[MAX_TTYS] = { LINE_INIT(CONFIG_CON_ZERO_CHAN, &driver),
- [ 1 ... MAX_TTYS - 1 ] =
+ [ 1 ... MAX_TTYS - 1 ] =
LINE_INIT(CONFIG_CON_CHAN, &driver) };
static int con_config(char *str)
{
- return(line_config(vts, sizeof(vts)/sizeof(vts[0]), str));
+ return line_config(vts, sizeof(vts)/sizeof(vts[0]), str);
}
static int con_get_config(char *dev, char *str, int size, char **error_out)
{
- return(line_get_config(dev, vts, sizeof(vts)/sizeof(vts[0]), str,
- size, error_out));
+ return line_get_config(dev, vts, sizeof(vts)/sizeof(vts[0]), str,
+ size, error_out);
}
static int con_remove(int n)
{
- return line_remove(vts, sizeof(vts)/sizeof(vts[0]), n);
+ return line_remove(vts, sizeof(vts)/sizeof(vts[0]), n);
}
static int con_open(struct tty_struct *tty, struct file *filp)
.close = line_close,
.write = line_write,
.put_char = line_put_char,
- .write_room = line_write_room,
+ .write_room = line_write_room,
.chars_in_buffer = line_chars_in_buffer,
.flush_buffer = line_flush_buffer,
.flush_chars = line_flush_chars,
};
static void uml_console_write(struct console *console, const char *string,
- unsigned len)
+ unsigned len)
{
struct line *line = &vts[console->index];
unsigned long flags;
{
struct line *line = &vts[co->index];
- return console_open_chan(line,co,&opts);
+ return console_open_chan(line, co, &opts);
}
static struct console stdiocons = {
.setup = uml_console_setup,
.flags = CON_PRINTBUFFER,
.index = -1,
- .data = &vts,
+ .data = &vts,
};
int stdio_init(void)
console_driver = line_register_devfs(&console_lines, &driver,
&console_ops, vts,
ARRAY_SIZE(vts));
- if (NULL == console_driver)
+ if (console_driver == NULL)
return -1;
printk(KERN_INFO "Initialized stdio console driver\n");
con_init_done = 1;
register_console(&stdiocons);
- return(0);
+ return 0;
}
late_initcall(stdio_init);
static int console_chan_setup(char *str)
{
- return(line_setup(vts, sizeof(vts)/sizeof(vts[0]), str, 1));
+ return line_setup(vts, sizeof(vts)/sizeof(vts[0]), str, 1);
}
__setup("con", console_chan_setup);
__channel_help(console_chan_setup, "con");
char **error_out);
#endif
-
-/*
- * Overrides for Emacs so that we follow Linus's tabbing style.
- * Emacs will notice this stuff at the end of the file and automatically
- * adjust the settings for this buffer only. This must remain at the end
- * of the file.
- * ---------------------------------------------------------------------------
- * Local variables:
- * c-file-style: "linux"
- * End:
- */
head : NULL, \
tail : NULL, \
sigio : 0, \
- driver : d, \
- have_irq : 0 }
+ driver : d, \
+ have_irq : 0 }
struct lines {
int num;
#define LINES_INIT(n) { num : n }
extern void line_close(struct tty_struct *tty, struct file * filp);
-extern int line_open(struct line *lines, struct tty_struct *tty,
+extern int line_open(struct line *lines, struct tty_struct *tty,
struct chan_opts *opts);
extern int line_setup(struct line *lines, unsigned int sizeof_lines, char *init,
int all_allowed);
-extern int line_write(struct tty_struct *tty, const unsigned char *buf, int len);
+extern int line_write(struct tty_struct *tty, const unsigned char *buf,
+ int len);
extern void line_put_char(struct tty_struct *tty, unsigned char ch);
extern void line_set_termios(struct tty_struct *tty, struct termios * old);
extern int line_chars_in_buffer(struct tty_struct *tty);
unsigned int cmd, unsigned long arg);
extern char *add_xterm_umid(char *base);
-extern int line_setup_irq(int fd, int input, int output, struct tty_struct *tty);
+extern int line_setup_irq(int fd, int input, int output,
+ struct tty_struct *tty);
extern void line_close_chan(struct line *line);
extern void line_disable(struct tty_struct *tty, int current_irq);
-extern struct tty_driver * line_register_devfs(struct lines *set,
- struct line_driver *line_driver,
+extern struct tty_driver * line_register_devfs(struct lines *set,
+ struct line_driver *line_driver,
struct tty_operations *driver,
struct line *lines,
int nlines);
extern void lines_init(struct line *lines, int nlines);
extern void close_lines(struct line *lines, int nlines);
-extern int line_config(struct line *lines, unsigned int sizeof_lines, char *str);
+extern int line_config(struct line *lines, unsigned int sizeof_lines,
+ char *str);
extern int line_id(char **str, int *start_out, int *end_out);
extern int line_remove(struct line *lines, unsigned int sizeof_lines, int n);
-extern int line_get_config(char *dev, struct line *lines, unsigned int sizeof_lines, char *str,
+extern int line_get_config(char *dev, struct line *lines,
+ unsigned int sizeof_lines, char *str,
int size, char **error_out);
#endif
#include "mode.h"
struct aio_thread_req {
- enum aio_type type;
- int io_fd;
- unsigned long long offset;
- char *buf;
- int len;
- struct aio_context *aio;
+ enum aio_type type;
+ int io_fd;
+ unsigned long long offset;
+ char *buf;
+ int len;
+ struct aio_context *aio;
};
static int aio_req_fd_r = -1;
static long io_setup(int n, aio_context_t *ctxp)
{
- return syscall(__NR_io_setup, n, ctxp);
+ return syscall(__NR_io_setup, n, ctxp);
}
static long io_submit(aio_context_t ctx, long nr, struct iocb **iocbpp)
{
- return syscall(__NR_io_submit, ctx, nr, iocbpp);
+ return syscall(__NR_io_submit, ctx, nr, iocbpp);
}
static long io_getevents(aio_context_t ctx_id, long min_nr, long nr,
- struct io_event *events, struct timespec *timeout)
+ struct io_event *events, struct timespec *timeout)
{
- return syscall(__NR_io_getevents, ctx_id, min_nr, nr, events, timeout);
+ return syscall(__NR_io_getevents, ctx_id, min_nr, nr, events, timeout);
}
#endif
*/
static int do_aio(aio_context_t ctx, enum aio_type type, int fd, char *buf,
- int len, unsigned long long offset, struct aio_context *aio)
+ int len, unsigned long long offset, struct aio_context *aio)
{
- struct iocb iocb, *iocbp = &iocb;
- char c;
- int err;
-
- iocb = ((struct iocb) { .aio_data = (unsigned long) aio,
- .aio_reqprio = 0,
- .aio_fildes = fd,
- .aio_buf = (unsigned long) buf,
- .aio_nbytes = len,
- .aio_offset = offset,
- .aio_reserved1 = 0,
- .aio_reserved2 = 0,
- .aio_reserved3 = 0 });
-
- switch(type){
- case AIO_READ:
- iocb.aio_lio_opcode = IOCB_CMD_PREAD;
- err = io_submit(ctx, 1, &iocbp);
- break;
- case AIO_WRITE:
- iocb.aio_lio_opcode = IOCB_CMD_PWRITE;
- err = io_submit(ctx, 1, &iocbp);
- break;
- case AIO_MMAP:
- iocb.aio_lio_opcode = IOCB_CMD_PREAD;
- iocb.aio_buf = (unsigned long) &c;
- iocb.aio_nbytes = sizeof(c);
- err = io_submit(ctx, 1, &iocbp);
- break;
- default:
- printk("Bogus op in do_aio - %d\n", type);
- err = -EINVAL;
- break;
- }
-
- if(err > 0)
- err = 0;
+ struct iocb iocb, *iocbp = &iocb;
+ char c;
+ int err;
+
+ iocb = ((struct iocb) { .aio_data = (unsigned long) aio,
+ .aio_reqprio = 0,
+ .aio_fildes = fd,
+ .aio_buf = (unsigned long) buf,
+ .aio_nbytes = len,
+ .aio_offset = offset,
+ .aio_reserved1 = 0,
+ .aio_reserved2 = 0,
+ .aio_reserved3 = 0 });
+
+ switch(type){
+ case AIO_READ:
+ iocb.aio_lio_opcode = IOCB_CMD_PREAD;
+ err = io_submit(ctx, 1, &iocbp);
+ break;
+ case AIO_WRITE:
+ iocb.aio_lio_opcode = IOCB_CMD_PWRITE;
+ err = io_submit(ctx, 1, &iocbp);
+ break;
+ case AIO_MMAP:
+ iocb.aio_lio_opcode = IOCB_CMD_PREAD;
+ iocb.aio_buf = (unsigned long) &c;
+ iocb.aio_nbytes = sizeof(c);
+ err = io_submit(ctx, 1, &iocbp);
+ break;
+ default:
+ printk("Bogus op in do_aio - %d\n", type);
+ err = -EINVAL;
+ break;
+ }
+
+ if(err > 0)
+ err = 0;
else
err = -errno;
- return err;
+ return err;
}
static aio_context_t ctx = 0;
static int aio_thread(void *arg)
{
- struct aio_thread_reply reply;
- struct io_event event;
- int err, n, reply_fd;
-
- signal(SIGWINCH, SIG_IGN);
-
- while(1){
- n = io_getevents(ctx, 1, 1, &event, NULL);
- if(n < 0){
- if(errno == EINTR)
- continue;
- printk("aio_thread - io_getevents failed, "
- "errno = %d\n", errno);
- }
- else {
- reply = ((struct aio_thread_reply)
- { .data = (void *) (long) event.data,
- .err = event.res });
+ struct aio_thread_reply reply;
+ struct io_event event;
+ int err, n, reply_fd;
+
+ signal(SIGWINCH, SIG_IGN);
+
+ while(1){
+ n = io_getevents(ctx, 1, 1, &event, NULL);
+ if(n < 0){
+ if(errno == EINTR)
+ continue;
+ printk("aio_thread - io_getevents failed, "
+ "errno = %d\n", errno);
+ }
+ else {
+ reply = ((struct aio_thread_reply)
+ { .data = (void *) (long) event.data,
+ .err = event.res });
reply_fd = ((struct aio_context *) reply.data)->reply_fd;
err = os_write_file(reply_fd, &reply, sizeof(reply));
- if(err != sizeof(reply))
+ if(err != sizeof(reply))
printk("aio_thread - write failed, fd = %d, "
- "err = %d\n", aio_req_fd_r, -err);
- }
- }
- return 0;
+ "err = %d\n", aio_req_fd_r, -err);
+ }
+ }
+ return 0;
}
#endif
static int do_not_aio(struct aio_thread_req *req)
{
- char c;
- int err;
-
- switch(req->type){
- case AIO_READ:
- err = os_seek_file(req->io_fd, req->offset);
- if(err)
- goto out;
-
- err = os_read_file(req->io_fd, req->buf, req->len);
- break;
- case AIO_WRITE:
- err = os_seek_file(req->io_fd, req->offset);
- if(err)
- goto out;
-
- err = os_write_file(req->io_fd, req->buf, req->len);
- break;
- case AIO_MMAP:
- err = os_seek_file(req->io_fd, req->offset);
- if(err)
- goto out;
-
- err = os_read_file(req->io_fd, &c, sizeof(c));
- break;
- default:
- printk("do_not_aio - bad request type : %d\n", req->type);
- err = -EINVAL;
- break;
- }
-
- out:
- return err;
+ char c;
+ int err;
+
+ switch(req->type){
+ case AIO_READ:
+ err = os_seek_file(req->io_fd, req->offset);
+ if(err)
+ goto out;
+
+ err = os_read_file(req->io_fd, req->buf, req->len);
+ break;
+ case AIO_WRITE:
+ err = os_seek_file(req->io_fd, req->offset);
+ if(err)
+ goto out;
+
+ err = os_write_file(req->io_fd, req->buf, req->len);
+ break;
+ case AIO_MMAP:
+ err = os_seek_file(req->io_fd, req->offset);
+ if(err)
+ goto out;
+
+ err = os_read_file(req->io_fd, &c, sizeof(c));
+ break;
+ default:
+ printk("do_not_aio - bad request type : %d\n", req->type);
+ err = -EINVAL;
+ break;
+ }
+
+out:
+ return err;
}
static int not_aio_thread(void *arg)
{
- struct aio_thread_req req;
- struct aio_thread_reply reply;
- int err;
-
- signal(SIGWINCH, SIG_IGN);
- while(1){
- err = os_read_file(aio_req_fd_r, &req, sizeof(req));
- if(err != sizeof(req)){
- if(err < 0)
- printk("not_aio_thread - read failed, "
- "fd = %d, err = %d\n", aio_req_fd_r,
- -err);
- else {
- printk("not_aio_thread - short read, fd = %d, "
- "length = %d\n", aio_req_fd_r, err);
- }
- continue;
- }
- err = do_not_aio(&req);
- reply = ((struct aio_thread_reply) { .data = req.aio,
- .err = err });
- err = os_write_file(req.aio->reply_fd, &reply, sizeof(reply));
- if(err != sizeof(reply))
- printk("not_aio_thread - write failed, fd = %d, "
- "err = %d\n", aio_req_fd_r, -err);
- }
+ struct aio_thread_req req;
+ struct aio_thread_reply reply;
+ int err;
+
+ signal(SIGWINCH, SIG_IGN);
+ while(1){
+ err = os_read_file(aio_req_fd_r, &req, sizeof(req));
+ if(err != sizeof(req)){
+ if(err < 0)
+ printk("not_aio_thread - read failed, "
+ "fd = %d, err = %d\n", aio_req_fd_r,
+ -err);
+ else {
+ printk("not_aio_thread - short read, fd = %d, "
+ "length = %d\n", aio_req_fd_r, err);
+ }
+ continue;
+ }
+ err = do_not_aio(&req);
+ reply = ((struct aio_thread_reply) { .data = req.aio,
+ .err = err });
+ err = os_write_file(req.aio->reply_fd, &reply, sizeof(reply));
+ if(err != sizeof(reply))
+ printk("not_aio_thread - write failed, fd = %d, "
+ "err = %d\n", aio_req_fd_r, -err);
+ }
return 0;
}
static int init_aio_24(void)
{
- unsigned long stack;
- int fds[2], err;
-
- err = os_pipe(fds, 1, 1);
- if(err)
- goto out;
-
- aio_req_fd_w = fds[0];
- aio_req_fd_r = fds[1];
- err = run_helper_thread(not_aio_thread, NULL,
- CLONE_FILES | CLONE_VM | SIGCHLD, &stack, 0);
- if(err < 0)
- goto out_close_pipe;
-
- aio_pid = err;
- goto out;
-
- out_close_pipe:
- os_close_file(fds[0]);
- os_close_file(fds[1]);
- aio_req_fd_w = -1;
- aio_req_fd_r = -1;
- out:
+ unsigned long stack;
+ int fds[2], err;
+
+ err = os_pipe(fds, 1, 1);
+ if(err)
+ goto out;
+
+ aio_req_fd_w = fds[0];
+ aio_req_fd_r = fds[1];
+ err = run_helper_thread(not_aio_thread, NULL,
+ CLONE_FILES | CLONE_VM | SIGCHLD, &stack, 0);
+ if(err < 0)
+ goto out_close_pipe;
+
+ aio_pid = err;
+ goto out;
+
+out_close_pipe:
+ os_close_file(fds[0]);
+ os_close_file(fds[1]);
+ aio_req_fd_w = -1;
+ aio_req_fd_r = -1;
+out:
#ifndef HAVE_AIO_ABI
printk("/usr/include/linux/aio_abi.h not present during build\n");
#endif
printk("2.6 host AIO support not used - falling back to I/O "
"thread\n");
- return 0;
+ return 0;
}
#ifdef HAVE_AIO_ABI
#define DEFAULT_24_AIO 0
static int init_aio_26(void)
{
- unsigned long stack;
- int err;
+ unsigned long stack;
+ int err;
- if(io_setup(256, &ctx)){
+ if(io_setup(256, &ctx)){
err = -errno;
- printk("aio_thread failed to initialize context, err = %d\n",
- errno);
- return err;
- }
+ printk("aio_thread failed to initialize context, err = %d\n",
+ errno);
+ return err;
+ }
- err = run_helper_thread(aio_thread, NULL,
- CLONE_FILES | CLONE_VM | SIGCHLD, &stack, 0);
- if(err < 0)
- return err;
+ err = run_helper_thread(aio_thread, NULL,
+ CLONE_FILES | CLONE_VM | SIGCHLD, &stack, 0);
+ if(err < 0)
+ return err;
- aio_pid = err;
+ aio_pid = err;
printk("Using 2.6 host AIO\n");
- return 0;
+ return 0;
}
static int submit_aio_26(enum aio_type type, int io_fd, char *buf, int len,
unsigned long long offset, struct aio_context *aio)
{
- struct aio_thread_reply reply;
- int err;
-
- err = do_aio(ctx, type, io_fd, buf, len, offset, aio);
- if(err){
- reply = ((struct aio_thread_reply) { .data = aio,
- .err = err });
- err = os_write_file(aio->reply_fd, &reply, sizeof(reply));
- if(err != sizeof(reply))
- printk("submit_aio_26 - write failed, "
- "fd = %d, err = %d\n", aio->reply_fd, -err);
- else err = 0;
- }
-
- return err;
+ struct aio_thread_reply reply;
+ int err;
+
+ err = do_aio(ctx, type, io_fd, buf, len, offset, aio);
+ if(err){
+ reply = ((struct aio_thread_reply) { .data = aio,
+ .err = err });
+ err = os_write_file(aio->reply_fd, &reply, sizeof(reply));
+ if(err != sizeof(reply))
+ printk("submit_aio_26 - write failed, "
+ "fd = %d, err = %d\n", aio->reply_fd, -err);
+ else err = 0;
+ }
+
+ return err;
}
#else
#define DEFAULT_24_AIO 1
static int init_aio_26(void)
{
- return -ENOSYS;
+ return -ENOSYS;
}
static int submit_aio_26(enum aio_type type, int io_fd, char *buf, int len,
unsigned long long offset, struct aio_context *aio)
{
- return -ENOSYS;
+ return -ENOSYS;
}
#endif
static int __init set_aio_24(char *name, int *add)
{
- aio_24 = 1;
- return 0;
+ aio_24 = 1;
+ return 0;
}
__uml_setup("aio=2.4", set_aio_24,
static int init_aio(void)
{
- int err;
-
- CHOOSE_MODE(({
- if(!aio_24){
- printk("Disabling 2.6 AIO in tt mode\n");
- aio_24 = 1;
- } }), (void) 0);
-
- if(!aio_24){
- err = init_aio_26();
- if(err && (errno == ENOSYS)){
- printk("2.6 AIO not supported on the host - "
- "reverting to 2.4 AIO\n");
- aio_24 = 1;
- }
- else return err;
- }
-
- if(aio_24)
- return init_aio_24();
-
- return 0;
+ int err;
+
+ CHOOSE_MODE(({ if(!aio_24){
+ printk("Disabling 2.6 AIO in tt mode\n");
+ aio_24 = 1;
+ } }), (void) 0);
+
+ if(!aio_24){
+ err = init_aio_26();
+ if(err && (errno == ENOSYS)){
+ printk("2.6 AIO not supported on the host - "
+ "reverting to 2.4 AIO\n");
+ aio_24 = 1;
+ }
+ else return err;
+ }
+
+ if(aio_24)
+ return init_aio_24();
+
+ return 0;
}
/* The reason for the __initcall/__uml_exitcall asymmetry is that init_aio
static void exit_aio(void)
{
- if(aio_pid != -1)
- os_kill_process(aio_pid, 1);
+ if(aio_pid != -1)
+ os_kill_process(aio_pid, 1);
}
__uml_exitcall(exit_aio);
static int submit_aio_24(enum aio_type type, int io_fd, char *buf, int len,
unsigned long long offset, struct aio_context *aio)
{
- struct aio_thread_req req = { .type = type,
- .io_fd = io_fd,
- .offset = offset,
- .buf = buf,
- .len = len,
- .aio = aio,
- };
- int err;
-
- err = os_write_file(aio_req_fd_w, &req, sizeof(req));
- if(err == sizeof(req))
- err = 0;
-
- return err;
+ struct aio_thread_req req = { .type = type,
+ .io_fd = io_fd,
+ .offset = offset,
+ .buf = buf,
+ .len = len,
+ .aio = aio,
+ };
+ int err;
+
+ err = os_write_file(aio_req_fd_w, &req, sizeof(req));
+ if(err == sizeof(req))
+ err = 0;
+
+ return err;
}
int submit_aio(enum aio_type type, int io_fd, char *buf, int len,
- unsigned long long offset, int reply_fd,
- struct aio_context *aio)
+ unsigned long long offset, int reply_fd,
+ struct aio_context *aio)
{
- aio->reply_fd = reply_fd;
- if(aio_24)
- return submit_aio_24(type, io_fd, buf, len, offset, aio);
- else {
- return submit_aio_26(type, io_fd, buf, len, offset, aio);
- }
+ aio->reply_fd = reply_fd;
+ if(aio_24)
+ return submit_aio_24(type, io_fd, buf, len, offset, aio);
+ else {
+ return submit_aio_26(type, io_fd, buf, len, offset, aio);
+ }
}
projects / linux-2.6 / commitdiff