aboutsummaryrefslogtreecommitdiff
path: root/arch/um/drivers
diff options
context:
space:
mode:
Diffstat (limited to 'arch/um/drivers')
-rw-r--r--arch/um/drivers/chan_kern.c23
-rw-r--r--arch/um/drivers/chan_user.c78
-rw-r--r--arch/um/drivers/cow_sys.h2
-rw-r--r--arch/um/drivers/daemon_user.c4
-rw-r--r--arch/um/drivers/fd.c2
-rw-r--r--arch/um/drivers/harddog_user.c2
-rw-r--r--arch/um/drivers/line.c65
-rw-r--r--arch/um/drivers/mcast_user.c2
-rw-r--r--arch/um/drivers/mconsole_user.c5
-rw-r--r--arch/um/drivers/net_user.c4
-rw-r--r--arch/um/drivers/port_user.c4
-rw-r--r--arch/um/drivers/pty.c78
-rw-r--r--arch/um/drivers/slip_user.c4
-rw-r--r--arch/um/drivers/slirp_user.c2
-rw-r--r--arch/um/drivers/ssl.c10
-rw-r--r--arch/um/drivers/stdio_console.c9
-rw-r--r--arch/um/drivers/tty.c2
-rw-r--r--arch/um/drivers/ubd_kern.c8
-rw-r--r--arch/um/drivers/ubd_user.c6
-rw-r--r--arch/um/drivers/xterm.c174
-rw-r--r--arch/um/drivers/xterm_kern.c49
21 files changed, 299 insertions, 234 deletions
diff --git a/arch/um/drivers/chan_kern.c b/arch/um/drivers/chan_kern.c
index 3aa35161176..368d3e97dfd 100644
--- a/arch/um/drivers/chan_kern.c
+++ b/arch/um/drivers/chan_kern.c
@@ -203,22 +203,37 @@ void chan_enable_winch(struct list_head *chans, struct tty_struct *tty)
}
}
-void enable_chan(struct line *line)
+int enable_chan(struct line *line)
{
struct list_head *ele;
struct chan *chan;
+ int err;
list_for_each(ele, &line->chan_list){
chan = list_entry(ele, struct chan, list);
- if(open_one_chan(chan))
+ err = open_one_chan(chan);
+ if (err) {
+ if (chan->primary)
+ goto out_close;
+
continue;
+ }
if(chan->enabled)
continue;
- line_setup_irq(chan->fd, chan->input, chan->output, line,
- chan);
+ err = line_setup_irq(chan->fd, chan->input, chan->output, line,
+ chan);
+ if (err)
+ goto out_close;
+
chan->enabled = 1;
}
+
+ return 0;
+
+ out_close:
+ close_chan(&line->chan_list, 0);
+ return err;
}
/* Items are added in IRQ context, when free_irq can't be called, and
diff --git a/arch/um/drivers/chan_user.c b/arch/um/drivers/chan_user.c
index 13f0bf852b2..4d438f36ea2 100644
--- a/arch/um/drivers/chan_user.c
+++ b/arch/um/drivers/chan_user.c
@@ -51,19 +51,21 @@ error:
/*
* UML SIGWINCH handling
*
- * The point of this is to handle SIGWINCH on consoles which have host ttys and
- * relay them inside UML to whatever might be running on the console and cares
- * about the window size (since SIGWINCH notifies about terminal size changes).
+ * The point of this is to handle SIGWINCH on consoles which have host
+ * ttys and relay them inside UML to whatever might be running on the
+ * console and cares about the window size (since SIGWINCH notifies
+ * about terminal size changes).
*
- * So, we have a separate thread for each host tty attached to a UML device
- * (side-issue - I'm annoyed that one thread can't have multiple controlling
- * ttys for purposed of handling SIGWINCH, but I imagine there are other reasons
- * that doesn't make any sense).
+ * So, we have a separate thread for each host tty attached to a UML
+ * device (side-issue - I'm annoyed that one thread can't have
+ * multiple controlling ttys for the purpose of handling SIGWINCH, but
+ * I imagine there are other reasons that doesn't make any sense).
*
- * SIGWINCH can't be received synchronously, so you have to set up to receive it
- * as a signal. That being the case, if you are going to wait for it, it is
- * convenient to sit in sigsuspend() and wait for the signal to bounce you out of
- * it (see below for how we make sure to exit only on SIGWINCH).
+ * SIGWINCH can't be received synchronously, so you have to set up to
+ * receive it as a signal. That being the case, if you are going to
+ * wait for it, it is convenient to sit in sigsuspend() and wait for
+ * the signal to bounce you out of it (see below for how we make sure
+ * to exit only on SIGWINCH).
*/
static void winch_handler(int sig)
@@ -112,7 +114,8 @@ static int winch_thread(void *arg)
err = os_new_tty_pgrp(pty_fd, os_getpid());
if(err < 0){
- printk("winch_thread : new_tty_pgrp failed, err = %d\n", -err);
+ printk("winch_thread : new_tty_pgrp failed on fd %d, "
+ "err = %d\n", pty_fd, -err);
exit(1);
}
@@ -126,8 +129,9 @@ static int winch_thread(void *arg)
"err = %d\n", -count);
while(1){
- /* This will be interrupted by SIGWINCH only, since other signals
- * are blocked.*/
+ /* This will be interrupted by SIGWINCH only, since
+ * other signals are blocked.
+ */
sigsuspend(&sigs);
count = os_write_file(pipe_fd, &c, sizeof(c));
@@ -137,10 +141,10 @@ static int winch_thread(void *arg)
}
}
-static int winch_tramp(int fd, struct tty_struct *tty, int *fd_out)
+static int winch_tramp(int fd, struct tty_struct *tty, int *fd_out,
+ unsigned long *stack_out)
{
struct winch_data data;
- unsigned long stack;
int fds[2], n, err;
char c;
@@ -153,9 +157,11 @@ static int winch_tramp(int fd, struct tty_struct *tty, int *fd_out)
data = ((struct winch_data) { .pty_fd = fd,
.pipe_fd = fds[1] } );
/* CLONE_FILES so this thread doesn't hold open files which are open
- * now, but later closed. This is a problem with /dev/net/tun.
+ * now, but later closed in a different thread. This is a
+ * problem with /dev/net/tun, which if held open by this
+ * thread, prevents the TUN/TAP device from being reused.
*/
- err = run_helper_thread(winch_thread, &data, CLONE_FILES, &stack, 0);
+ err = run_helper_thread(winch_thread, &data, CLONE_FILES, stack_out);
if(err < 0){
printk("fork of winch_thread failed - errno = %d\n", -err);
goto out_close;
@@ -170,7 +176,13 @@ static int winch_tramp(int fd, struct tty_struct *tty, int *fd_out)
err = -EINVAL;
goto out_close;
}
- return err ;
+
+ if (os_set_fd_block(*fd_out, 0)) {
+ printk("winch_tramp: failed to set thread_fd non-blocking.\n");
+ goto out_close;
+ }
+
+ return err;
out_close:
os_close_file(fds[1]);
@@ -181,25 +193,25 @@ static int winch_tramp(int fd, struct tty_struct *tty, int *fd_out)
void register_winch(int fd, struct tty_struct *tty)
{
- int pid, thread, thread_fd = -1;
- int count;
+ unsigned long stack;
+ int pid, thread, count, thread_fd = -1;
char c = 1;
if(!isatty(fd))
return;
pid = tcgetpgrp(fd);
- if(!CHOOSE_MODE_PROC(is_tracer_winch, is_skas_winch, pid, fd,
- tty) && (pid == -1)){
- thread = winch_tramp(fd, tty, &thread_fd);
- if(thread > 0){
- register_winch_irq(thread_fd, fd, thread, tty);
-
- count = os_write_file(thread_fd, &c, sizeof(c));
- if(count != sizeof(c))
- printk("register_winch : failed to write "
- "synchronization byte, err = %d\n",
- -count);
- }
+ if (!CHOOSE_MODE_PROC(is_tracer_winch, is_skas_winch, pid, fd, tty) &&
+ (pid == -1)) {
+ thread = winch_tramp(fd, tty, &thread_fd, &stack);
+ if (thread < 0)
+ return;
+
+ register_winch_irq(thread_fd, fd, thread, tty, stack);
+
+ count = os_write_file(thread_fd, &c, sizeof(c));
+ if(count != sizeof(c))
+ printk("register_winch : failed to write "
+ "synchronization byte, err = %d\n", -count);
}
}
diff --git a/arch/um/drivers/cow_sys.h b/arch/um/drivers/cow_sys.h
index 15453845d2b..ca8c9e11a39 100644
--- a/arch/um/drivers/cow_sys.h
+++ b/arch/um/drivers/cow_sys.h
@@ -8,7 +8,7 @@
static inline void *cow_malloc(int size)
{
- return um_kmalloc(size);
+ return kmalloc(size, UM_GFP_KERNEL);
}
static inline void cow_free(void *ptr)
diff --git a/arch/um/drivers/daemon_user.c b/arch/um/drivers/daemon_user.c
index b869e389968..8d2008f0668 100644
--- a/arch/um/drivers/daemon_user.c
+++ b/arch/um/drivers/daemon_user.c
@@ -35,7 +35,7 @@ static struct sockaddr_un *new_addr(void *name, int len)
{
struct sockaddr_un *sun;
- sun = um_kmalloc(sizeof(struct sockaddr_un));
+ sun = kmalloc(sizeof(struct sockaddr_un), UM_GFP_KERNEL);
if(sun == NULL){
printk("new_addr: allocation of sockaddr_un failed\n");
return NULL;
@@ -83,7 +83,7 @@ static int connect_to_switch(struct daemon_data *pri)
goto out_close;
}
- sun = um_kmalloc(sizeof(struct sockaddr_un));
+ sun = kmalloc(sizeof(struct sockaddr_un), UM_GFP_KERNEL);
if(sun == NULL){
printk("new_addr: allocation of sockaddr_un failed\n");
err = -ENOMEM;
diff --git a/arch/um/drivers/fd.c b/arch/um/drivers/fd.c
index 7f083ec47a4..39c01ffd45c 100644
--- a/arch/um/drivers/fd.c
+++ b/arch/um/drivers/fd.c
@@ -37,7 +37,7 @@ static void *fd_init(char *str, int device, const struct chan_opts *opts)
printk("fd_init : couldn't parse file descriptor '%s'\n", str);
return(NULL);
}
- data = um_kmalloc(sizeof(*data));
+ data = kmalloc(sizeof(*data), UM_GFP_KERNEL);
if(data == NULL) return(NULL);
*data = ((struct fd_chan) { .fd = n,
.raw = opts->raw });
diff --git a/arch/um/drivers/harddog_user.c b/arch/um/drivers/harddog_user.c
index 5eeecf8917c..1171790f742 100644
--- a/arch/um/drivers/harddog_user.c
+++ b/arch/um/drivers/harddog_user.c
@@ -68,7 +68,7 @@ int start_watchdog(int *in_fd_ret, int *out_fd_ret, char *sock)
args = pid_args;
}
- pid = run_helper(pre_exec, &data, args, NULL);
+ pid = run_helper(pre_exec, &data, args);
os_close_file(out_fds[0]);
os_close_file(in_fds[1]);
diff --git a/arch/um/drivers/line.c b/arch/um/drivers/line.c
index 4bd40bb43ec..3e0b68e297f 100644
--- a/arch/um/drivers/line.c
+++ b/arch/um/drivers/line.c
@@ -454,7 +454,10 @@ int line_open(struct line *lines, struct tty_struct *tty)
tty->driver_data = line;
line->tty = tty;
- enable_chan(line);
+ err = enable_chan(line);
+ if (err)
+ return err;
+
INIT_DELAYED_WORK(&line->task, line_timer_cb);
if(!line->sigio){
@@ -746,8 +749,24 @@ struct winch {
int tty_fd;
int pid;
struct tty_struct *tty;
+ unsigned long stack;
};
+static void free_winch(struct winch *winch, int free_irq_ok)
+{
+ list_del(&winch->list);
+
+ if (winch->pid != -1)
+ os_kill_process(winch->pid, 1);
+ if (winch->fd != -1)
+ os_close_file(winch->fd);
+ if (winch->stack != 0)
+ free_stack(winch->stack, 0);
+ if (free_irq_ok)
+ free_irq(WINCH_IRQ, winch);
+ kfree(winch);
+}
+
static irqreturn_t winch_interrupt(int irq, void *data)
{
struct winch *winch = data;
@@ -764,12 +783,13 @@ static irqreturn_t winch_interrupt(int irq, void *data)
"errno = %d\n", -err);
printk("fd %d is losing SIGWINCH support\n",
winch->tty_fd);
+ free_winch(winch, 0);
return IRQ_HANDLED;
}
goto out;
}
}
- tty = winch->tty;
+ tty = winch->tty;
if (tty != NULL) {
line = tty->driver_data;
chan_window_size(&line->chan_list, &tty->winsize.ws_row,
@@ -782,43 +802,44 @@ static irqreturn_t winch_interrupt(int irq, void *data)
return IRQ_HANDLED;
}
-void register_winch_irq(int fd, int tty_fd, int pid, struct tty_struct *tty)
+void register_winch_irq(int fd, int tty_fd, int pid, struct tty_struct *tty,
+ unsigned long stack)
{
struct winch *winch;
winch = kmalloc(sizeof(*winch), GFP_KERNEL);
if (winch == NULL) {
printk("register_winch_irq - kmalloc failed\n");
- return;
+ goto cleanup;
}
*winch = ((struct winch) { .list = LIST_HEAD_INIT(winch->list),
.fd = fd,
.tty_fd = tty_fd,
.pid = pid,
- .tty = tty });
+ .tty = tty,
+ .stack = stack });
+
+ if (um_request_irq(WINCH_IRQ, fd, IRQ_READ, winch_interrupt,
+ IRQF_DISABLED | IRQF_SHARED | IRQF_SAMPLE_RANDOM,
+ "winch", winch) < 0) {
+ printk("register_winch_irq - failed to register IRQ\n");
+ goto out_free;
+ }
spin_lock(&winch_handler_lock);
list_add(&winch->list, &winch_handlers);
spin_unlock(&winch_handler_lock);
- if(um_request_irq(WINCH_IRQ, fd, IRQ_READ, winch_interrupt,
- IRQF_DISABLED | IRQF_SHARED | IRQF_SAMPLE_RANDOM,
- "winch", winch) < 0)
- printk("register_winch_irq - failed to register IRQ\n");
-}
-
-static void free_winch(struct winch *winch)
-{
- list_del(&winch->list);
-
- if(winch->pid != -1)
- os_kill_process(winch->pid, 1);
- if(winch->fd != -1)
- os_close_file(winch->fd);
+ return;
- free_irq(WINCH_IRQ, winch);
+ out_free:
kfree(winch);
+ cleanup:
+ os_kill_process(pid, 1);
+ os_close_file(fd);
+ if (stack != 0)
+ free_stack(stack, 0);
}
static void unregister_winch(struct tty_struct *tty)
@@ -831,7 +852,7 @@ static void unregister_winch(struct tty_struct *tty)
list_for_each(ele, &winch_handlers){
winch = list_entry(ele, struct winch, list);
if(winch->tty == tty){
- free_winch(winch);
+ free_winch(winch, 1);
break;
}
}
@@ -847,7 +868,7 @@ static void winch_cleanup(void)
list_for_each_safe(ele, next, &winch_handlers){
winch = list_entry(ele, struct winch, list);
- free_winch(winch);
+ free_winch(winch, 1);
}
spin_unlock(&winch_handler_lock);
diff --git a/arch/um/drivers/mcast_user.c b/arch/um/drivers/mcast_user.c
index d319db16d4e..236a3dfc297 100644
--- a/arch/um/drivers/mcast_user.c
+++ b/arch/um/drivers/mcast_user.c
@@ -30,7 +30,7 @@ static struct sockaddr_in *new_addr(char *addr, unsigned short port)
{
struct sockaddr_in *sin;
- sin = um_kmalloc(sizeof(struct sockaddr_in));
+ sin = kmalloc(sizeof(struct sockaddr_in), UM_GFP_KERNEL);
if(sin == NULL){
printk("new_addr: allocation of sockaddr_in failed\n");
return NULL;
diff --git a/arch/um/drivers/mconsole_user.c b/arch/um/drivers/mconsole_user.c
index 62e5ad63181..f31e71546e5 100644
--- a/arch/um/drivers/mconsole_user.c
+++ b/arch/um/drivers/mconsole_user.c
@@ -86,8 +86,9 @@ int mconsole_get_request(int fd, struct mc_request *req)
int len;
req->originlen = sizeof(req->origin);
- req->len = recvfrom(fd, &req->request, sizeof(req->request), 0,
- (struct sockaddr *) req->origin, &req->originlen);
+ req->len = recvfrom(fd, &req->request, sizeof(req->request),
+ MSG_DONTWAIT, (struct sockaddr *) req->origin,
+ &req->originlen);
if (req->len < 0)
return 0;
diff --git a/arch/um/drivers/net_user.c b/arch/um/drivers/net_user.c
index 3503cff867c..da946e3e1bf 100644
--- a/arch/um/drivers/net_user.c
+++ b/arch/um/drivers/net_user.c
@@ -187,7 +187,7 @@ static int change_tramp(char **argv, char *output, int output_len)
}
pe_data.close_me = fds[0];
pe_data.stdout = fds[1];
- pid = run_helper(change_pre_exec, &pe_data, argv, NULL);
+ pid = run_helper(change_pre_exec, &pe_data, argv);
if (pid > 0) /* Avoid hang as we won't get data in failure case. */
read_output(fds[0], output, output_len);
@@ -217,7 +217,7 @@ static void change(char *dev, char *what, unsigned char *addr,
netmask[2], netmask[3]);
output_len = UM_KERN_PAGE_SIZE;
- output = um_kmalloc(output_len);
+ output = kmalloc(output_len, UM_GFP_KERNEL);
if(output == NULL)
printk("change : failed to allocate output buffer\n");
diff --git a/arch/um/drivers/port_user.c b/arch/um/drivers/port_user.c
index 3f6357d24be..c799b00012c 100644
--- a/arch/um/drivers/port_user.c
+++ b/arch/um/drivers/port_user.c
@@ -50,7 +50,7 @@ static void *port_init(char *str, int device, const struct chan_opts *opts)
if(kern_data == NULL)
return NULL;
- data = um_kmalloc(sizeof(*data));
+ data = kmalloc(sizeof(*data), UM_GFP_KERNEL);
if(data == NULL)
goto err;
@@ -188,7 +188,7 @@ int port_connection(int fd, int *socket, int *pid_out)
{ .sock_fd = new,
.pipe_fd = socket[1] });
- err = run_helper(port_pre_exec, &data, argv, NULL);
+ err = run_helper(port_pre_exec, &data, argv);
if(err < 0)
goto out_shutdown;
diff --git a/arch/um/drivers/pty.c b/arch/um/drivers/pty.c
index df4976c9eef..1e3fd619a83 100644
--- a/arch/um/drivers/pty.c
+++ b/arch/um/drivers/pty.c
@@ -1,5 +1,5 @@
/*
- * Copyright (C) 2001, 2002 Jeff Dike (jdike@karaya.com)
+ * Copyright (C) 2001 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
* Licensed under the GPL
*/
@@ -7,12 +7,14 @@
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
+#include <fcntl.h>
#include <errno.h>
#include <termios.h>
+#include <sys/stat.h>
#include "chan_user.h"
-#include "user.h"
-#include "kern_util.h"
#include "os.h"
+#include "user.h"
+#include "kern_constants.h"
#include "um_malloc.h"
struct pty_chan {
@@ -27,12 +29,14 @@ static void *pty_chan_init(char *str, int device, const struct chan_opts *opts)
{
struct pty_chan *data;
- data = um_kmalloc(sizeof(*data));
- if(data == NULL) return(NULL);
+ data = kmalloc(sizeof(*data), UM_GFP_KERNEL);
+ if (data == NULL)
+ return NULL;
+
*data = ((struct pty_chan) { .announce = opts->announce,
.dev = device,
.raw = opts->raw });
- return(data);
+ return data;
}
static int pts_open(int input, int output, int primary, void *d,
@@ -43,31 +47,35 @@ static int pts_open(int input, int output, int primary, void *d,
int fd, err;
fd = get_pty();
- if(fd < 0){
+ if (fd < 0) {
err = -errno;
- printk("open_pts : Failed to open pts\n");
+ printk(UM_KERN_ERR "open_pts : Failed to open pts\n");
return err;
}
- if(data->raw){
+
+ if (data->raw) {
CATCH_EINTR(err = tcgetattr(fd, &data->tt));
- if(err)
- return(err);
+ if (err)
+ return err;
err = raw(fd);
- if(err)
- return(err);
+ if (err)
+ return err;
}
dev = ptsname(fd);
sprintf(data->dev_name, "%s", dev);
*dev_out = data->dev_name;
+
if (data->announce)
(*data->announce)(dev, data->dev);
- return(fd);
+
+ return fd;
}
static int getmaster(char *line)
{
+ struct stat buf;
char *pty, *bank, *cp;
int master, err;
@@ -75,24 +83,29 @@ static int getmaster(char *line)
for (bank = "pqrs"; *bank; bank++) {
line[strlen("/dev/pty")] = *bank;
*pty = '0';
- if (os_stat_file(line, NULL) < 0)
+ /* Did we hit the end ? */
+ if ((stat(line, &buf) < 0) && (errno == ENOENT))
break;
+
for (cp = "0123456789abcdef"; *cp; cp++) {
*pty = *cp;
- master = os_open_file(line, of_rdwr(OPENFLAGS()), 0);
+ master = open(line, O_RDWR);
if (master >= 0) {
char *tp = &line[strlen("/dev/")];
/* verify slave side is usable */
*tp = 't';
- err = os_access(line, OS_ACC_RW_OK);
+ err = access(line, R_OK | W_OK);
*tp = 'p';
- if(err == 0) return(master);
- (void) os_close_file(master);
+ if(!err)
+ return master;
+ close(master);
}
}
}
- return(-1);
+
+ printk(UM_KERN_ERR "getmaster - no usable host pty devices\n");
+ return -ENOENT;
}
static int pty_open(int input, int output, int primary, void *d,
@@ -103,20 +116,22 @@ static int pty_open(int input, int output, int primary, void *d,
char dev[sizeof("/dev/ptyxx\0")] = "/dev/ptyxx";
fd = getmaster(dev);
- if(fd < 0)
- return(-errno);
+ if (fd < 0)
+ return fd;
if(data->raw){
err = raw(fd);
- if(err)
- return(err);
+ if (err)
+ return err;
}
- if(data->announce) (*data->announce)(dev, data->dev);
+ if (data->announce)
+ (*data->announce)(dev, data->dev);
sprintf(data->dev_name, "%s", dev);
*dev_out = data->dev_name;
- return(fd);
+
+ return fd;
}
const struct chan_ops pty_ops = {
@@ -144,14 +159,3 @@ const struct chan_ops pts_ops = {
.free = generic_free,
.winch = 0,
};
-
-/*
- * 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:
- */
diff --git a/arch/um/drivers/slip_user.c b/arch/um/drivers/slip_user.c
index 78f0e515da8..c0b73c28cff 100644
--- a/arch/um/drivers/slip_user.c
+++ b/arch/um/drivers/slip_user.c
@@ -85,13 +85,13 @@ static int slip_tramp(char **argv, int fd)
pe_data.stdin = fd;
pe_data.stdout = fds[1];
pe_data.close_me = fds[0];
- err = run_helper(slip_pre_exec, &pe_data, argv, NULL);
+ err = run_helper(slip_pre_exec, &pe_data, argv);
if(err < 0)
goto out_close;
pid = err;
output_len = UM_KERN_PAGE_SIZE;
- output = um_kmalloc(output_len);
+ output = kmalloc(output_len, UM_GFP_KERNEL);
if(output == NULL){
printk("slip_tramp : failed to allocate output buffer\n");
os_kill_process(pid, 1);
diff --git a/arch/um/drivers/slirp_user.c b/arch/um/drivers/slirp_user.c
index 39f889fe994..0e462f64f22 100644
--- a/arch/um/drivers/slirp_user.c
+++ b/arch/um/drivers/slirp_user.c
@@ -42,7 +42,7 @@ static int slirp_tramp(char **argv, int fd)
pe_data.stdin = fd;
pe_data.stdout = fd;
- pid = run_helper(slirp_pre_exec, &pe_data, argv, NULL);
+ pid = run_helper(slirp_pre_exec, &pe_data, argv);
return(pid);
}
diff --git a/arch/um/drivers/ssl.c b/arch/um/drivers/ssl.c
index fd09ad9e9c0..875d60d0c6a 100644
--- a/arch/um/drivers/ssl.c
+++ b/arch/um/drivers/ssl.c
@@ -42,8 +42,6 @@ static struct chan_opts opts = {
.announce = ssl_announce,
.xterm_title = "Serial Line #%d",
.raw = 1,
- .tramp_stack = 0,
- .in_kernel = 1,
};
static int ssl_config(char *str, char **error_out);
@@ -99,7 +97,13 @@ static int ssl_remove(int n, char **error_out)
static int ssl_open(struct tty_struct *tty, struct file *filp)
{
- return line_open(serial_lines, tty);
+ int err = line_open(serial_lines, tty);
+
+ if (err)
+ printk(KERN_ERR "Failed to open serial line %d, err = %d\n",
+ tty->index, err);
+
+ return err;
}
#if 0
diff --git a/arch/um/drivers/stdio_console.c b/arch/um/drivers/stdio_console.c
index 2bb4193ac1a..656036e90b1 100644
--- a/arch/um/drivers/stdio_console.c
+++ b/arch/um/drivers/stdio_console.c
@@ -46,8 +46,6 @@ static struct chan_opts opts = {
.announce = stdio_announce,
.xterm_title = "Virtual Console #%d",
.raw = 1,
- .tramp_stack = 0,
- .in_kernel = 1,
};
static int con_config(char *str, char **error_out);
@@ -101,7 +99,12 @@ static int con_remove(int n, char **error_out)
static int con_open(struct tty_struct *tty, struct file *filp)
{
- return line_open(vts, tty);
+ int err = line_open(vts, tty);
+ if (err)
+ printk(KERN_ERR "Failed to open console %d, err = %d\n",
+ tty->index, err);
+
+ return err;
}
/* Set in an initcall, checked in an exitcall */
diff --git a/arch/um/drivers/tty.c b/arch/um/drivers/tty.c
index c07d0d56278..a9f87e19c5b 100644
--- a/arch/um/drivers/tty.c
+++ b/arch/um/drivers/tty.c
@@ -29,7 +29,7 @@ static void *tty_chan_init(char *str, int device, const struct chan_opts *opts)
}
str++;
- data = um_kmalloc(sizeof(*data));
+ data = kmalloc(sizeof(*data), UM_GFP_KERNEL);
if(data == NULL)
return NULL;
*data = ((struct tty_chan) { .dev = str,
diff --git a/arch/um/drivers/ubd_kern.c b/arch/um/drivers/ubd_kern.c
index 2e09f162c42..fc27f6c72b4 100644
--- a/arch/um/drivers/ubd_kern.c
+++ b/arch/um/drivers/ubd_kern.c
@@ -712,6 +712,8 @@ static int ubd_add(int n, char **error_out)
ubd_dev->queue->queuedata = ubd_dev;
blk_queue_max_hw_segments(ubd_dev->queue, MAX_SG);
+ if(ubd_dev->cow.file != NULL)
+ blk_queue_max_sectors(ubd_dev->queue, 8 * sizeof(long));
err = ubd_disk_register(MAJOR_NR, ubd_dev->size, n, &ubd_gendisk[n]);
if(err){
*error_out = "Failed to register device";
@@ -1083,7 +1085,7 @@ static void do_ubd_request(request_queue_t *q)
{
struct io_thread_req *io_req;
struct request *req;
- int n;
+ int n, last_sectors;
while(1){
struct ubd *dev = q->queuedata;
@@ -1099,9 +1101,11 @@ static void do_ubd_request(request_queue_t *q)
}
req = dev->request;
+ last_sectors = 0;
while(dev->start_sg < dev->end_sg){
struct scatterlist *sg = &dev->sg[dev->start_sg];
+ req->sector += last_sectors;
io_req = kmalloc(sizeof(struct io_thread_req),
GFP_ATOMIC);
if(io_req == NULL){
@@ -1113,6 +1117,7 @@ static void do_ubd_request(request_queue_t *q)
(unsigned long long) req->sector << 9,
sg->offset, sg->length, sg->page);
+ last_sectors = sg->length >> 9;
n = os_write_file(thread_fd, &io_req,
sizeof(struct io_thread_req *));
if(n != sizeof(struct io_thread_req *)){
@@ -1124,7 +1129,6 @@ static void do_ubd_request(request_queue_t *q)
return;
}
- req->sector += sg->length >> 9;
dev->start_sg++;
}
dev->end_sg = 0;
diff --git a/arch/um/drivers/ubd_user.c b/arch/um/drivers/ubd_user.c
index 4707b3f14c2..41d254bd38d 100644
--- a/arch/um/drivers/ubd_user.c
+++ b/arch/um/drivers/ubd_user.c
@@ -43,6 +43,12 @@ int start_io_thread(unsigned long sp, int *fd_out)
kernel_fd = fds[0];
*fd_out = fds[1];
+ err = os_set_fd_block(*fd_out, 0);
+ if (err) {
+ printk("start_io_thread - failed to set nonblocking I/O.\n");
+ goto out_close;
+ }
+
pid = clone(io_thread, (void *) sp, CLONE_FILES | CLONE_VM | SIGCHLD,
NULL);
if(pid < 0){
diff --git a/arch/um/drivers/xterm.c b/arch/um/drivers/xterm.c
index 571c2b3325d..fd817e54154 100644
--- a/arch/um/drivers/xterm.c
+++ b/arch/um/drivers/xterm.c
@@ -1,22 +1,20 @@
/*
- * Copyright (C) 2001, 2002 Jeff Dike (jdike@karaya.com)
+ * Copyright (C) 2001 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
* Licensed under the GPL
*/
-#include <stdio.h>
#include <stdlib.h>
+#include <stdio.h>
#include <unistd.h>
#include <string.h>
#include <errno.h>
#include <termios.h>
-#include <signal.h>
-#include <sched.h>
-#include <sys/socket.h>
-#include "kern_util.h"
#include "chan_user.h"
-#include "user.h"
#include "os.h"
+#include "init.h"
+#include "user.h"
#include "xterm.h"
+#include "kern_constants.h"
struct xterm_chan {
int pid;
@@ -25,25 +23,21 @@ struct xterm_chan {
int device;
int raw;
struct termios tt;
- unsigned long stack;
- int direct_rcv;
};
-/* Not static because it's called directly by the tt mode gdb code */
-void *xterm_init(char *str, int device, const struct chan_opts *opts)
+static void *xterm_init(char *str, int device, const struct chan_opts *opts)
{
struct xterm_chan *data;
data = malloc(sizeof(*data));
- if(data == NULL) return(NULL);
- *data = ((struct xterm_chan) { .pid = -1,
+ if (data == NULL)
+ return NULL;
+ *data = ((struct xterm_chan) { .pid = -1,
.helper_pid = -1,
- .device = device,
+ .device = device,
.title = opts->xterm_title,
- .raw = opts->raw,
- .stack = opts->tramp_stack,
- .direct_rcv = !opts->in_kernel } );
- return(data);
+ .raw = opts->raw } );
+ return data;
}
/* Only changed by xterm_setup, which is a setup */
@@ -57,16 +51,22 @@ static int __init xterm_setup(char *line, int *add)
terminal_emulator = line;
line = strchr(line, ',');
- if(line == NULL) return(0);
+ if (line == NULL)
+ return 0;
+
*line++ = '\0';
- if(*line) title_switch = line;
+ if (*line)
+ title_switch = line;
line = strchr(line, ',');
- if(line == NULL) return(0);
+ if (line == NULL)
+ return 0;
+
*line++ = '\0';
- if(*line) exec_switch = line;
+ if (*line)
+ exec_switch = line;
- return(0);
+ return 0;
}
__uml_setup("xterm=", xterm_setup,
@@ -82,107 +82,128 @@ __uml_setup("xterm=", xterm_setup,
" are 'xterm=gnome-terminal,-t,-x'.\n\n"
);
-/* XXX This badly needs some cleaning up in the error paths
- * Not static because it's called directly by the tt mode gdb code
- */
-int xterm_open(int input, int output, int primary, void *d,
+static int xterm_open(int input, int output, int primary, void *d,
char **dev_out)
{
struct xterm_chan *data = d;
- unsigned long stack;
int pid, fd, new, err;
char title[256], file[] = "/tmp/xterm-pipeXXXXXX";
- char *argv[] = { terminal_emulator, title_switch, title, exec_switch,
+ char *argv[] = { terminal_emulator, title_switch, title, exec_switch,
"/usr/lib/uml/port-helper", "-uml-socket",
file, NULL };
- if(os_access(argv[4], OS_ACC_X_OK) < 0)
+ if (access(argv[4], X_OK) < 0)
argv[4] = "port-helper";
/* Check that DISPLAY is set, this doesn't guarantee the xterm
* will work but w/o it we can be pretty sure it won't. */
- if (!getenv("DISPLAY")) {
- printk("xterm_open: $DISPLAY not set.\n");
+ if (getenv("DISPLAY") == NULL) {
+ printk(UM_KERN_ERR "xterm_open: $DISPLAY not set.\n");
return -ENODEV;
}
+ /*
+ * This business of getting a descriptor to a temp file,
+ * deleting the file and closing the descriptor is just to get
+ * a known-unused name for the Unix socket that we really
+ * want.
+ */
fd = mkstemp(file);
- if(fd < 0){
+ if (fd < 0) {
err = -errno;
- printk("xterm_open : mkstemp failed, errno = %d\n", errno);
+ printk(UM_KERN_ERR "xterm_open : mkstemp failed, errno = %d\n",
+ errno);
return err;
}
- if(unlink(file)){
+ if (unlink(file)) {
err = -errno;
- printk("xterm_open : unlink failed, errno = %d\n", errno);
+ printk(UM_KERN_ERR "xterm_open : unlink failed, errno = %d\n",
+ errno);
return err;
}
- os_close_file(fd);
+ close(fd);
fd = os_create_unix_socket(file, sizeof(file), 1);
- if(fd < 0){
- printk("xterm_open : create_unix_socket failed, errno = %d\n",
- -fd);
- return(fd);
+ if (fd < 0) {
+ printk(UM_KERN_ERR "xterm_open : create_unix_socket failed, "
+ "errno = %d\n", -fd);
+ return fd;
}
sprintf(title, data->title, data->device);
- stack = data->stack;
- pid = run_helper(NULL, NULL, argv, &stack);
- if(pid < 0){
- printk("xterm_open : run_helper failed, errno = %d\n", -pid);
- return(pid);
+ pid = run_helper(NULL, NULL, argv);
+ if (pid < 0) {
+ err = pid;
+ printk(UM_KERN_ERR "xterm_open : run_helper failed, "
+ "errno = %d\n", -err);
+ goto out_close1;
}
- if (data->direct_rcv) {
- new = os_rcv_fd(fd, &data->helper_pid);
- } else {
- err = os_set_fd_block(fd, 0);
- if(err < 0){
- printk("xterm_open : failed to set descriptor "
- "non-blocking, err = %d\n", -err);
- return(err);
- }
- new = xterm_fd(fd, &data->helper_pid);
+ err = os_set_fd_block(fd, 0);
+ if (err < 0) {
+ printk(UM_KERN_ERR "xterm_open : failed to set descriptor "
+ "non-blocking, err = %d\n", -err);
+ goto out_kill;
}
- if(new < 0){
- printk("xterm_open : os_rcv_fd failed, err = %d\n", -new);
- goto out;
+
+ new = xterm_fd(fd, &data->helper_pid);
+ if (new < 0) {
+ err = new;
+ printk(UM_KERN_ERR "xterm_open : os_rcv_fd failed, err = %d\n",
+ -err);
+ goto out_kill;
+ }
+
+ err = os_set_fd_block(new, 0);
+ if (err) {
+ printk(UM_KERN_ERR "xterm_open : failed to set xterm "
+ "descriptor non-blocking, err = %d\n", -err);
+ goto out_close2;
}
CATCH_EINTR(err = tcgetattr(new, &data->tt));
- if(err){
+ if (err) {
new = err;
- goto out;
+ goto out_close2;
}
- if(data->raw){
+ if (data->raw) {
err = raw(new);
- if(err){
+ if (err) {
new = err;
- goto out;
+ goto out_close2;
}
}
+ unlink(file);
data->pid = pid;
*dev_out = NULL;
- out:
- unlink(file);
- return(new);
+
+ return new;
+
+ out_close2:
+ close(new);
+ out_kill:
+ os_kill_process(pid, 1);
+ out_close1:
+ close(fd);
+
+ return err;
}
-/* Not static because it's called directly by the tt mode gdb code */
-void xterm_close(int fd, void *d)
+static void xterm_close(int fd, void *d)
{
struct xterm_chan *data = d;
- if(data->pid != -1)
+ if (data->pid != -1)
os_kill_process(data->pid, 1);
data->pid = -1;
- if(data->helper_pid != -1)
+
+ if (data->helper_pid != -1)
os_kill_process(data->helper_pid, 0);
data->helper_pid = -1;
+
os_close_file(fd);
}
@@ -203,14 +224,3 @@ const struct chan_ops xterm_ops = {
.free = xterm_free,
.winch = 1,
};
-
-/*
- * 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:
- */
diff --git a/arch/um/drivers/xterm_kern.c b/arch/um/drivers/xterm_kern.c
index a4ce7058e10..b646bccef37 100644
--- a/arch/um/drivers/xterm_kern.c
+++ b/arch/um/drivers/xterm_kern.c
@@ -1,18 +1,14 @@
/*
- * Copyright (C) 2002 Jeff Dike (jdike@karaya.com)
+ * Copyright (C) 2001 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
* Licensed under the GPL
*/
-#include "linux/errno.h"
-#include "linux/slab.h"
-#include "linux/signal.h"
-#include "linux/interrupt.h"
-#include "asm/irq.h"
-#include "irq_user.h"
+#include <linux/slab.h>
+#include <linux/completion.h>
+#include <linux/irqreturn.h>
+#include <asm/irq.h>
#include "irq_kern.h"
-#include "kern_util.h"
#include "os.h"
-#include "xterm.h"
struct xterm_wait {
struct completion ready;
@@ -27,12 +23,13 @@ static irqreturn_t xterm_interrupt(int irq, void *data)
int fd;
fd = os_rcv_fd(xterm->fd, &xterm->pid);
- if(fd == -EAGAIN)
- return(IRQ_NONE);
+ if (fd == -EAGAIN)
+ return IRQ_NONE;
xterm->new_fd = fd;
complete(&xterm->ready);
- return(IRQ_HANDLED);
+
+ return IRQ_HANDLED;
}
int xterm_fd(int socket, int *pid_out)
@@ -41,22 +38,21 @@ int xterm_fd(int socket, int *pid_out)
int err, ret;
data = kmalloc(sizeof(*data), GFP_KERNEL);
- if(data == NULL){
+ if (data == NULL) {
printk(KERN_ERR "xterm_fd : failed to allocate xterm_wait\n");
- return(-ENOMEM);
+ return -ENOMEM;
}
/* This is a locked semaphore... */
- *data = ((struct xterm_wait)
- { .fd = socket,
- .pid = -1,
- .new_fd = -1 });
+ *data = ((struct xterm_wait) { .fd = socket,
+ .pid = -1,
+ .new_fd = -1 });
init_completion(&data->ready);
- err = um_request_irq(XTERM_IRQ, socket, IRQ_READ, xterm_interrupt,
+ err = um_request_irq(XTERM_IRQ, socket, IRQ_READ, xterm_interrupt,
IRQF_DISABLED | IRQF_SHARED | IRQF_SAMPLE_RANDOM,
"xterm", data);
- if (err){
+ if (err) {
printk(KERN_ERR "xterm_fd : failed to get IRQ for xterm, "
"err = %d\n", err);
ret = err;
@@ -76,16 +72,5 @@ int xterm_fd(int socket, int *pid_out)
out:
kfree(data);
- return(ret);
+ return ret;
}
-
-/*
- * 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:
- */
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-05 21:21:03 +0000