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Diffstat (limited to 'arch/um/os-Linux/drivers/ethertap_user.c')
-rw-r--r--arch/um/os-Linux/drivers/ethertap_user.c86
1 files changed, 44 insertions, 42 deletions
diff --git a/arch/um/os-Linux/drivers/ethertap_user.c b/arch/um/os-Linux/drivers/ethertap_user.c
index d74eedb7e682..29404b955f18 100644
--- a/arch/um/os-Linux/drivers/ethertap_user.c
+++ b/arch/um/os-Linux/drivers/ethertap_user.c
@@ -1,4 +1,5 @@
/*
+ * Copyright (C) 2001 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
* Copyright (C) 2001 Lennert Buytenhek (buytenh@gnu.org) and
* James Leu (jleu@mindspring.net).
* Copyright (C) 2001 by various other people who didn't put their name here.
@@ -7,20 +8,16 @@
#include <stdio.h>
#include <unistd.h>
-#include <stddef.h>
-#include <stdlib.h>
-#include <sys/errno.h>
+#include <errno.h>
+#include <string.h>
#include <sys/socket.h>
#include <sys/wait.h>
-#include <sys/un.h>
-#include <net/if.h>
-#include "user.h"
-#include "kern_util.h"
-#include "net_user.h"
#include "etap.h"
+#include "kern_constants.h"
#include "os.h"
+#include "net_user.h"
#include "um_malloc.h"
-#include "kern_constants.h"
+#include "user.h"
#define MAX_PACKET ETH_MAX_PACKET
@@ -49,16 +46,18 @@ static void etap_change(int op, unsigned char *addr, unsigned char *netmask,
memcpy(change.addr, addr, sizeof(change.addr));
memcpy(change.netmask, netmask, sizeof(change.netmask));
CATCH_EINTR(n = write(fd, &change, sizeof(change)));
- if(n != sizeof(change)){
- printk("etap_change - request failed, err = %d\n", errno);
+ if (n != sizeof(change)) {
+ printk(UM_KERN_ERR "etap_change - request failed, err = %d\n",
+ errno);
return;
}
output = kmalloc(UM_KERN_PAGE_SIZE, UM_GFP_KERNEL);
- if(output == NULL)
- printk("etap_change : Failed to allocate output buffer\n");
+ if (output == NULL)
+ printk(UM_KERN_ERR "etap_change : Failed to allocate output "
+ "buffer\n");
read_output(fd, output, UM_KERN_PAGE_SIZE);
- if(output != NULL){
+ if (output != NULL) {
printk("%s", output);
kfree(output);
}
@@ -107,7 +106,7 @@ static int etap_tramp(char *dev, char *gate, int control_me,
sprintf(data_fd_buf, "%d", data_remote);
sprintf(version_buf, "%d", UML_NET_VERSION);
- if(gate != NULL){
+ if (gate != NULL) {
strcpy(gate_buf, gate);
args = setup_args;
}
@@ -119,24 +118,26 @@ static int etap_tramp(char *dev, char *gate, int control_me,
pe_data.data_me = data_me;
pid = run_helper(etap_pre_exec, &pe_data, args);
- if(pid < 0)
+ if (pid < 0)
err = pid;
close(data_remote);
close(control_remote);
CATCH_EINTR(n = read(control_me, &c, sizeof(c)));
- if(n != sizeof(c)){
+ if (n != sizeof(c)) {
err = -errno;
- printk("etap_tramp : read of status failed, err = %d\n", -err);
+ printk(UM_KERN_ERR "etap_tramp : read of status failed, "
+ "err = %d\n", -err);
return err;
}
- if(c != 1){
- printk("etap_tramp : uml_net failed\n");
+ if (c != 1) {
+ printk(UM_KERN_ERR "etap_tramp : uml_net failed\n");
err = -EINVAL;
CATCH_EINTR(n = waitpid(pid, &status, 0));
- if(n < 0)
+ if (n < 0)
err = -errno;
- else if(!WIFEXITED(status) || (WEXITSTATUS(status) != 1))
- printk("uml_net didn't exit with status 1\n");
+ else if (!WIFEXITED(status) || (WEXITSTATUS(status) != 1))
+ printk(UM_KERN_ERR "uml_net didn't exit with "
+ "status 1\n");
}
return err;
}
@@ -148,22 +149,22 @@ static int etap_open(void *data)
int data_fds[2], control_fds[2], err, output_len;
err = tap_open_common(pri->dev, pri->gate_addr);
- if(err)
+ if (err)
return err;
err = socketpair(AF_UNIX, SOCK_DGRAM, 0, data_fds);
- if(err){
+ if (err) {
err = -errno;
- printk("etap_open - data socketpair failed - err = %d\n",
- errno);
+ printk(UM_KERN_ERR "etap_open - data socketpair failed - "
+ "err = %d\n", errno);
return err;
}
err = socketpair(AF_UNIX, SOCK_STREAM, 0, control_fds);
- if(err){
+ if (err) {
err = -errno;
- printk("etap_open - control socketpair failed - err = %d\n",
- errno);
+ printk(UM_KERN_ERR "etap_open - control socketpair failed - "
+ "err = %d\n", errno);
goto out_close_data;
}
@@ -173,15 +174,16 @@ static int etap_open(void *data)
output = kmalloc(output_len, UM_GFP_KERNEL);
read_output(control_fds[0], output, output_len);
- if(output == NULL)
- printk("etap_open : failed to allocate output buffer\n");
+ if (output == NULL)
+ printk(UM_KERN_ERR "etap_open : failed to allocate output "
+ "buffer\n");
else {
printk("%s", output);
kfree(output);
}
- if(err < 0){
- printk("etap_tramp failed - err = %d\n", -err);
+ if (err < 0) {
+ printk(UM_KERN_ERR "etap_tramp failed - err = %d\n", -err);
goto out_close_control;
}
@@ -206,14 +208,14 @@ static void etap_close(int fd, void *data)
iter_addresses(pri->dev, etap_close_addr, &pri->control_fd);
close(fd);
- if(shutdown(pri->data_fd, SHUT_RDWR) < 0)
- printk("etap_close - shutdown data socket failed, errno = %d\n",
- errno);
-
- if(shutdown(pri->control_fd, SHUT_RDWR) < 0)
- printk("etap_close - shutdown control socket failed, "
+ if (shutdown(pri->data_fd, SHUT_RDWR) < 0)
+ printk(UM_KERN_ERR "etap_close - shutdown data socket failed, "
"errno = %d\n", errno);
+ if (shutdown(pri->control_fd, SHUT_RDWR) < 0)
+ printk(UM_KERN_ERR "etap_close - shutdown control socket "
+ "failed, errno = %d\n", errno);
+
close(pri->data_fd);
pri->data_fd = -1;
close(pri->control_fd);
@@ -231,7 +233,7 @@ static void etap_add_addr(unsigned char *addr, unsigned char *netmask,
struct ethertap_data *pri = data;
tap_check_ips(pri->gate_addr, addr);
- if(pri->control_fd == -1)
+ if (pri->control_fd == -1)
return;
etap_open_addr(addr, netmask, &pri->control_fd);
}
@@ -241,7 +243,7 @@ static void etap_del_addr(unsigned char *addr, unsigned char *netmask,
{
struct ethertap_data *pri = data;
- if(pri->control_fd == -1)
+ if (pri->control_fd == -1)
return;
etap_close_addr(addr, netmask, &pri->control_fd);
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-27 00:42:29 +0000