#include <stdlib.h>
#include <termios.h>
#include <pty.h>
-#include <fcntl.h>
#include <signal.h>
#include <errno.h>
#include <string.h>
#include "init.h"
#include "user.h"
#include "kern_util.h"
+#include "user_util.h"
#include "sigio.h"
#include "helper.h"
#include "os.h"
int pty_close_sigio = 0;
/* Used as a flag during SIGIO testing early in boot */
-static int got_sigio = 0;
+static volatile int got_sigio = 0;
void __init handler(int sig)
{
info->err = 0;
if(openpty(&info->master, &info->slave, NULL, NULL, NULL))
- info->err = errno;
+ info->err = -errno;
}
void __init check_one_sigio(void (*proc)(int, int))
{
struct sigaction old, new;
- struct termios tt;
struct openpty_arg pty = { .master = -1, .slave = -1 };
- int master, slave, flags;
+ int master, slave, err;
initial_thread_cb(openpty_cb, &pty);
if(pty.err){
- printk("openpty failed, errno = %d\n", pty.err);
+ printk("openpty failed, errno = %d\n", -pty.err);
return;
}
return;
}
- if(tcgetattr(master, &tt) < 0)
- panic("check_sigio : tcgetattr failed, errno = %d\n", errno);
- cfmakeraw(&tt);
- if(tcsetattr(master, TCSADRAIN, &tt) < 0)
- panic("check_sigio : tcsetattr failed, errno = %d\n", errno);
+ /* Not now, but complain so we now where we failed. */
+ err = raw(master);
+ if (err < 0)
+ panic("check_sigio : __raw failed, errno = %d\n", -err);
- if((flags = fcntl(master, F_GETFL)) < 0)
- panic("tty_fds : fcntl F_GETFL failed, errno = %d\n", errno);
-
- if((fcntl(master, F_SETFL, flags | O_NONBLOCK | O_ASYNC) < 0) ||
- (fcntl(master, F_SETOWN, os_getpid()) < 0))
- panic("check_sigio : fcntl F_SETFL or F_SETOWN failed, "
- "errno = %d\n", errno);
-
- if((fcntl(slave, F_SETFL, flags | O_NONBLOCK) < 0))
- panic("check_sigio : fcntl F_SETFL failed, errno = %d\n",
- errno);
+ err = os_sigio_async(master, slave);
+ if(err < 0)
+ panic("tty_fds : sigio_async failed, err = %d\n", -err);
if(sigaction(SIGIO, NULL, &old) < 0)
panic("check_sigio : sigaction 1 failed, errno = %d\n", errno);
got_sigio = 0;
(*proc)(master, slave);
- close(master);
- close(slave);
+ os_close_file(master);
+ os_close_file(slave);
if(sigaction(SIGIO, &old, NULL) < 0)
panic("check_sigio : sigaction 3 failed, errno = %d\n", errno);
printk("Checking that host ptys support output SIGIO...");
memset(buf, 0, sizeof(buf));
- while(write(master, buf, sizeof(buf)) > 0) ;
+
+ while(os_write_file(master, buf, sizeof(buf)) > 0) ;
if(errno != EAGAIN)
panic("check_sigio : write failed, errno = %d\n", errno);
-
- while(((n = read(slave, buf, sizeof(buf))) > 0) && !got_sigio) ;
+ while(((n = os_read_file(slave, buf, sizeof(buf))) > 0) && !got_sigio) ;
if(got_sigio){
printk("Yes\n");
pty_output_sigio = 1;
}
- else if(errno == EAGAIN) printk("No, enabling workaround\n");
- else panic("check_sigio : read failed, errno = %d\n", errno);
+ else if(n == -EAGAIN) printk("No, enabling workaround\n");
+ else panic("check_sigio : read failed, err = %d\n", n);
}
static void tty_close(int master, int slave)
{
printk("Checking that host ptys support SIGIO on close...");
- close(slave);
+ os_close_file(slave);
if(got_sigio){
printk("Yes\n");
pty_close_sigio = 1;
void __init check_sigio(void)
{
- if(access("/dev/ptmx", R_OK) && access("/dev/ptyp0", R_OK)){
+ if((os_access("/dev/ptmx", OS_ACC_R_OK) < 0) &&
+ (os_access("/dev/ptyp0", OS_ACC_R_OK) < 0)){
printk("No pseudo-terminals available - skipping pty SIGIO "
"check\n");
return;
p = &fds->poll[i];
if(p->revents == 0) continue;
if(p->fd == sigio_private[1]){
- n = read(sigio_private[1], &c, sizeof(c));
+ n = os_read_file(sigio_private[1], &c, sizeof(c));
if(n != sizeof(c))
printk("write_sigio_thread : "
- "read failed, errno = %d\n",
- errno);
+ "read failed, err = %d\n", -n);
tmp = current_poll;
current_poll = next_poll;
next_poll = tmp;
(fds->used - i) * sizeof(*fds->poll));
}
- n = write(respond_fd, &c, sizeof(c));
+ n = os_write_file(respond_fd, &c, sizeof(c));
if(n != sizeof(c))
printk("write_sigio_thread : write failed, "
- "errno = %d\n", errno);
+ "err = %d\n", -n);
}
}
}
char c;
flags = set_signals(0);
- n = write(sigio_private[0], &c, sizeof(c));
+ n = os_write_file(sigio_private[0], &c, sizeof(c));
if(n != sizeof(c)){
- printk("update_thread : write failed, errno = %d\n", errno);
+ printk("update_thread : write failed, err = %d\n", -n);
goto fail;
}
- n = read(sigio_private[0], &c, sizeof(c));
+ n = os_read_file(sigio_private[0], &c, sizeof(c));
if(n != sizeof(c)){
- printk("update_thread : read failed, errno = %d\n", errno);
+ printk("update_thread : read failed, err = %d\n", -n);
goto fail;
}
if(write_sigio_pid != -1)
os_kill_process(write_sigio_pid, 1);
write_sigio_pid = -1;
- close(sigio_private[0]);
- close(sigio_private[1]);
- close(write_sigio_fds[0]);
- close(write_sigio_fds[1]);
+ os_close_file(sigio_private[0]);
+ os_close_file(sigio_private[1]);
+ os_close_file(write_sigio_fds[0]);
+ os_close_file(write_sigio_fds[1]);
sigio_unlock();
set_signals(flags);
}
goto out;
err = os_pipe(write_sigio_fds, 1, 1);
- if(err){
+ if(err < 0){
printk("write_sigio_workaround - os_pipe 1 failed, "
- "errno = %d\n", -err);
+ "err = %d\n", -err);
goto out;
}
err = os_pipe(sigio_private, 1, 1);
- if(err){
+ if(err < 0){
printk("write_sigio_workaround - os_pipe 2 failed, "
- "errno = %d\n", -err);
+ "err = %d\n", -err);
goto out_close1;
}
if(setup_initial_poll(sigio_private[1]))
os_kill_process(write_sigio_pid, 1);
write_sigio_pid = -1;
out_close2:
- close(sigio_private[0]);
- close(sigio_private[1]);
+ os_close_file(sigio_private[0]);
+ os_close_file(sigio_private[1]);
out_close1:
- close(write_sigio_fds[0]);
- close(write_sigio_fds[1]);
+ os_close_file(write_sigio_fds[0]);
+ os_close_file(write_sigio_fds[1]);
sigio_unlock();
}
int n;
char c;
- n = read(fd, &c, sizeof(c));
+ n = os_read_file(fd, &c, sizeof(c));
if(n != sizeof(c)){
- printk("read_sigio_fd - read failed, errno = %d\n", errno);
- return(-errno);
+ if(n < 0) {
+ printk("read_sigio_fd - read failed, err = %d\n", -n);
+ return(n);
+ }
+ else {
+ printk("read_sigio_fd - short read, bytes = %d\n", n);
+ return(-EIO);
+ }
}
return(n);
}
git://git.onelab.eu / linux-2.6.git / blobdiff