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authorJeff Dike <jdike@addtoit.com>2007-10-16 01:26:41 -0700
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-10-16 09:43:04 -0700
commite99525f9706900417f37721e601d2b414d41bfee (patch)
treefb407ea65a7c4c8bf457dd2ccab98842570cc62f /arch/um/drivers/port_user.c
parent79f662334fefa2dd3fdf66c44a4d2dca5e378ab4 (diff)
uml: console subsystem tidying
This does a lot of cleanup on the UML console system. This patch should be entirely non-functional. The tidying is as follows: header cleanups - the includes should be closer to minimal and complete all printks now have a severity lots of style fixes fd_close is restructured a little in order to reduce the nesting some functions were calling the os_* wrappers when they can call libc directly port_accept had a unnecessary variable it also tested a pid unecessarily before killing it some functions were made static xterm_free is gone, as it was identical to generic_free Signed-off-by: Jeff Dike <jdike@linux.intel.com> Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/um/drivers/port_user.c')
-rw-r--r--arch/um/drivers/port_user.c73
1 files changed, 35 insertions, 38 deletions
diff --git a/arch/um/drivers/port_user.c b/arch/um/drivers/port_user.c
index c799b00012c7..addd75902656 100644
--- a/arch/um/drivers/port_user.c
+++ b/arch/um/drivers/port_user.c
@@ -1,24 +1,20 @@
/*
- * Copyright (C) 2001 Jeff Dike (jdike@karaya.com)
+ * Copyright (C) 2001 - 2007 Jeff Dike (jdike@{linux.intel,addtoit}.com)
* Licensed under the GPL
*/
#include <stdio.h>
-#include <stddef.h>
#include <stdlib.h>
-#include <string.h>
#include <errno.h>
-#include <unistd.h>
#include <termios.h>
-#include <sys/socket.h>
-#include <sys/un.h>
+#include <unistd.h>
#include <netinet/in.h>
-#include "kern_util.h"
-#include "user.h"
#include "chan_user.h"
-#include "port.h"
+#include "kern_constants.h"
#include "os.h"
+#include "port.h"
#include "um_malloc.h"
+#include "user.h"
struct port_chan {
int raw;
@@ -34,24 +30,25 @@ static void *port_init(char *str, int device, const struct chan_opts *opts)
char *end;
int port;
- if(*str != ':'){
- printk("port_init : channel type 'port' must specify a "
- "port number\n");
+ if (*str != ':') {
+ printk(UM_KERN_ERR "port_init : channel type 'port' must "
+ "specify a port number\n");
return NULL;
}
str++;
port = strtoul(str, &end, 0);
- if((*end != '\0') || (end == str)){
- printk("port_init : couldn't parse port '%s'\n", str);
+ if ((*end != '\0') || (end == str)) {
+ printk(UM_KERN_ERR "port_init : couldn't parse port '%s'\n",
+ str);
return NULL;
}
kern_data = port_data(port);
- if(kern_data == NULL)
+ if (kern_data == NULL)
return NULL;
data = kmalloc(sizeof(*data), UM_GFP_KERNEL);
- if(data == NULL)
+ if (data == NULL)
goto err;
*data = ((struct port_chan) { .raw = opts->raw,
@@ -79,13 +76,13 @@ static int port_open(int input, int output, int primary, void *d,
int fd, err;
fd = port_wait(data->kernel_data);
- if((fd >= 0) && data->raw){
+ if ((fd >= 0) && data->raw) {
CATCH_EINTR(err = tcgetattr(fd, &data->tt));
- if(err)
+ if (err)
return err;
err = raw(fd);
- if(err)
+ if (err)
return err;
}
*dev_out = data->dev;
@@ -119,11 +116,11 @@ int port_listen_fd(int port)
int fd, err, arg;
fd = socket(PF_INET, SOCK_STREAM, 0);
- if(fd == -1)
+ if (fd == -1)
return -errno;
arg = 1;
- if(setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &arg, sizeof(arg)) < 0){
+ if (setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &arg, sizeof(arg)) < 0) {
err = -errno;
goto out;
}
@@ -131,23 +128,23 @@ int port_listen_fd(int port)
addr.sin_family = AF_INET;
addr.sin_port = htons(port);
addr.sin_addr.s_addr = htonl(INADDR_ANY);
- if(bind(fd, (struct sockaddr *) &addr, sizeof(addr)) < 0){
+ if (bind(fd, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
err = -errno;
goto out;
}
- if(listen(fd, 1) < 0){
+ if (listen(fd, 1) < 0) {
err = -errno;
goto out;
}
err = os_set_fd_block(fd, 0);
- if(err < 0)
+ if (err < 0)
goto out;
return fd;
out:
- os_close_file(fd);
+ close(fd);
return err;
}
@@ -163,10 +160,10 @@ void port_pre_exec(void *arg)
dup2(data->sock_fd, 0);
dup2(data->sock_fd, 1);
dup2(data->sock_fd, 2);
- os_close_file(data->sock_fd);
+ close(data->sock_fd);
dup2(data->pipe_fd, 3);
- os_shutdown_socket(3, 1, 0);
- os_close_file(data->pipe_fd);
+ shutdown(3, SHUT_RD);
+ close(data->pipe_fd);
}
int port_connection(int fd, int *socket, int *pid_out)
@@ -176,12 +173,12 @@ int port_connection(int fd, int *socket, int *pid_out)
"/usr/lib/uml/port-helper", NULL };
struct port_pre_exec_data data;
- new = os_accept_connection(fd);
- if(new < 0)
- return new;
+ new = accept(fd, NULL, 0);
+ if (new < 0)
+ return -errno;
err = os_pipe(socket, 0, 0);
- if(err < 0)
+ if (err < 0)
goto out_close;
data = ((struct port_pre_exec_data)
@@ -189,18 +186,18 @@ int port_connection(int fd, int *socket, int *pid_out)
.pipe_fd = socket[1] });
err = run_helper(port_pre_exec, &data, argv);
- if(err < 0)
+ if (err < 0)
goto out_shutdown;
*pid_out = err;
return new;
out_shutdown:
- os_shutdown_socket(socket[0], 1, 1);
- os_close_file(socket[0]);
- os_shutdown_socket(socket[1], 1, 1);
- os_close_file(socket[1]);
+ shutdown(socket[0], SHUT_RDWR);
+ close(socket[0]);
+ shutdown(socket[1], SHUT_RDWR);
+ close(socket[1]);
out_close:
- os_close_file(new);
+ close(new);
return err;
}