[PATCH 4/5] UML - driver formatting fixes

From: Jeff Dike
Date: Tue Mar 06 2007 - 13:44:27 EST

Fix a bunch of formatting violations in the drivers:
return(n) -> return n
whitespace fixes
emacs formatting comment removal
breaking if(foo) return(n) into two lines

There are also a couple of errno use bugs:
using errno in a printk when the failure put errno into a local variable
saving errno after a printk, which can change it

Signed-off-by: Jeff Dike <jdike@xxxxxxxxxxxxxxx>
--
arch/um/drivers/chan_user.c | 2 -
arch/um/drivers/daemon_user.c | 25 +++++--------------
arch/um/drivers/mcast_user.c | 12 ++++-----
arch/um/drivers/pcap_user.c | 33 ++++++++-----------------
arch/um/drivers/ubd_user.c | 15 +----------
arch/um/os-Linux/drivers/ethertap_user.c | 36 ++++++++++-----------------
arch/um/os-Linux/drivers/tuntap_user.c | 40 ++++++++++++-------------------
7 files changed, 57 insertions(+), 106 deletions(-)

Index: test/arch/um/drivers/daemon_user.c
===================================================================
--- test.orig/arch/um/drivers/daemon_user.c 2007-03-06 12:09:47.000000000 -0500
+++ test/arch/um/drivers/daemon_user.c 2007-03-06 12:10:12.000000000 -0500
@@ -39,11 +39,11 @@ static struct sockaddr_un *new_addr(void
sun = um_kmalloc(sizeof(struct sockaddr_un));
if(sun == NULL){
printk("new_addr: allocation of sockaddr_un failed\n");
- return(NULL);
+ return NULL;
}
sun->sun_family = AF_UNIX;
memcpy(sun->sun_path, name, len);
- return(sun);
+ return sun;
}

static int connect_to_switch(struct daemon_data *pri)
@@ -112,7 +112,7 @@ static int connect_to_switch(struct daem
}

pri->data_addr = sun;
- return(fd);
+ return fd;

out_free:
kfree(sun);
@@ -120,7 +120,7 @@ static int connect_to_switch(struct daem
os_close_file(fd);
out:
os_close_file(pri->control);
- return(err);
+ return err;
}

static void daemon_user_init(void *data, void *dev)
@@ -152,7 +152,7 @@ static void daemon_user_init(void *data,
static int daemon_open(void *data)
{
struct daemon_data *pri = data;
- return(pri->fd);
+ return pri->fd;
}

static void daemon_remove(void *data)
@@ -176,12 +176,12 @@ int daemon_user_write(int fd, void *buf,
{
struct sockaddr_un *data_addr = pri->data_addr;

- return(net_sendto(fd, buf, len, data_addr, sizeof(*data_addr)));
+ return net_sendto(fd, buf, len, data_addr, sizeof(*data_addr));
}

static int daemon_set_mtu(int mtu, void *data)
{
- return(mtu);
+ return mtu;
}

const struct net_user_info daemon_user_info = {
@@ -194,14 +194,3 @@ const struct net_user_info daemon_user_i
.delete_address = NULL,
.max_packet = MAX_PACKET - ETH_HEADER_OTHER
};
-
-/*
- * 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:
- */
Index: test/arch/um/drivers/mcast_user.c
===================================================================
--- test.orig/arch/um/drivers/mcast_user.c 2007-03-06 12:09:45.000000000 -0500
+++ test/arch/um/drivers/mcast_user.c 2007-03-06 12:09:57.000000000 -0500
@@ -34,12 +34,12 @@ static struct sockaddr_in *new_addr(char
sin = um_kmalloc(sizeof(struct sockaddr_in));
if(sin == NULL){
printk("new_addr: allocation of sockaddr_in failed\n");
- return(NULL);
+ return NULL;
}
sin->sin_family = AF_INET;
sin->sin_addr.s_addr = in_aton(addr);
sin->sin_port = htons(port);
- return(sin);
+ return sin;
}

static void mcast_user_init(void *data, void *dev)
@@ -107,8 +107,8 @@ static int mcast_open(void *data)
err = -errno;
printk("mcast_open : data bind failed, errno = %d\n", errno);
goto out_close;
- }
-
+ }
+
/* subscribe to the multicast group */
mreq.imr_multiaddr.s_addr = sin->sin_addr.s_addr;
mreq.imr_interface.s_addr = 0;
@@ -153,12 +153,12 @@ int mcast_user_write(int fd, void *buf,
{
struct sockaddr_in *data_addr = pri->mcast_addr;

- return(net_sendto(fd, buf, len, data_addr, sizeof(*data_addr)));
+ return net_sendto(fd, buf, len, data_addr, sizeof(*data_addr));
}

static int mcast_set_mtu(int mtu, void *data)
{
- return(mtu);
+ return mtu;
}

const struct net_user_info mcast_user_info = {
Index: test/arch/um/drivers/pcap_user.c
===================================================================
--- test.orig/arch/um/drivers/pcap_user.c 2007-03-06 12:09:45.000000000 -0500
+++ test/arch/um/drivers/pcap_user.c 2007-03-06 12:09:57.000000000 -0500
@@ -42,39 +42,39 @@ static int pcap_open(void *data)
int err;

if(pri->pcap == NULL)
- return(-ENODEV);
+ return -ENODEV;

if(pri->filter != NULL){
err = dev_netmask(pri->dev, &netmask);
if(err < 0){
printk("pcap_open : dev_netmask failed\n");
- return(-EIO);
+ return -EIO;
}

pri->compiled = um_kmalloc(sizeof(struct bpf_program));
if(pri->compiled == NULL){
printk("pcap_open : kmalloc failed\n");
- return(-ENOMEM);
+ return -ENOMEM;
}
-
+
err = pcap_compile(pri->pcap,
(struct bpf_program *) pri->compiled,
pri->filter, pri->optimize, netmask);
if(err < 0){
printk("pcap_open : pcap_compile failed - '%s'\n",
pcap_geterr(pri->pcap));
- return(-EIO);
+ return -EIO;
}

err = pcap_setfilter(pri->pcap, pri->compiled);
if(err < 0){
printk("pcap_open : pcap_setfilter failed - '%s'\n",
pcap_geterr(pri->pcap));
- return(-EIO);
+ return -EIO;
}
}
-
- return(PCAP_FD(pri->pcap));
+
+ return PCAP_FD(pri->pcap);
}

static void pcap_remove(void *data)
@@ -114,11 +114,11 @@ int pcap_user_read(int fd, void *buffer,
n = pcap_dispatch(pri->pcap, 1, handler, (u_char *) &hdata);
if(n < 0){
printk("pcap_dispatch failed - %s\n", pcap_geterr(pri->pcap));
- return(-EIO);
+ return -EIO;
}
else if(n == 0)
- return(0);
- return(hdata.len);
+ return 0;
+ return hdata.len;
}

const struct net_user_info pcap_user_info = {
@@ -131,14 +131,3 @@ const struct net_user_info pcap_user_inf
.delete_address = NULL,
.max_packet = MAX_PACKET - ETH_HEADER_OTHER
};
-
-/*
- * 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:
- */
Index: test/arch/um/os-Linux/drivers/ethertap_user.c
===================================================================
--- test.orig/arch/um/os-Linux/drivers/ethertap_user.c 2007-03-06 12:09:45.000000000 -0500
+++ test/arch/um/os-Linux/drivers/ethertap_user.c 2007-03-06 12:09:57.000000000 -0500
@@ -121,7 +121,7 @@ static int etap_tramp(char *dev, char *g
n = os_read_file(control_me, &c, sizeof(c));
if(n != sizeof(c)){
printk("etap_tramp : read of status failed, err = %d\n", -n);
- return(-EINVAL);
+ return -EINVAL;
}
if(c != 1){
printk("etap_tramp : uml_net failed\n");
@@ -132,7 +132,7 @@ static int etap_tramp(char *dev, char *g
else if(!WIFEXITED(status) || (WEXITSTATUS(status) != 1))
printk("uml_net didn't exit with status 1\n");
}
- return(err);
+ return err;
}

static int etap_open(void *data)
@@ -142,20 +142,21 @@ 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) return(err);
+ if(err)
+ return err;

err = os_pipe(data_fds, 0, 0);
if(err < 0){
printk("data os_pipe failed - err = %d\n", -err);
- return(err);
+ return err;
}

err = os_pipe(control_fds, 1, 0);
if(err < 0){
printk("control os_pipe failed - err = %d\n", -err);
- return(err);
+ return err;
}
-
+
err = etap_tramp(pri->dev_name, pri->gate_addr, control_fds[0],
control_fds[1], data_fds[0], data_fds[1]);
output_len = page_size();
@@ -171,13 +172,13 @@ static int etap_open(void *data)

if(err < 0){
printk("etap_tramp failed - err = %d\n", -err);
- return(err);
+ return err;
}

pri->data_fd = data_fds[0];
pri->control_fd = control_fds[0];
iter_addresses(pri->dev, etap_open_addr, &pri->control_fd);
- return(data_fds[0]);
+ return data_fds[0];
}

static void etap_close(int fd, void *data)
@@ -195,7 +196,7 @@ static void etap_close(int fd, void *dat

static int etap_set_mtu(int mtu, void *data)
{
- return(mtu);
+ return mtu;
}

static void etap_add_addr(unsigned char *addr, unsigned char *netmask,
@@ -204,7 +205,8 @@ static void etap_add_addr(unsigned char
struct ethertap_data *pri = data;

tap_check_ips(pri->gate_addr, addr);
- if(pri->control_fd == -1) return;
+ if(pri->control_fd == -1)
+ return;
etap_open_addr(addr, netmask, &pri->control_fd);
}

@@ -213,7 +215,8 @@ static void etap_del_addr(unsigned char
{
struct ethertap_data *pri = data;

- if(pri->control_fd == -1) return;
+ if(pri->control_fd == -1)
+ return;
etap_close_addr(addr, netmask, &pri->control_fd);
}

@@ -227,14 +230,3 @@ const struct net_user_info ethertap_user
.delete_address = etap_del_addr,
.max_packet = MAX_PACKET - ETH_HEADER_ETHERTAP
};
-
-/*
- * 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:
- */
Index: test/arch/um/os-Linux/drivers/tuntap_user.c
===================================================================
--- test.orig/arch/um/os-Linux/drivers/tuntap_user.c 2007-03-06 12:09:45.000000000 -0500
+++ test/arch/um/os-Linux/drivers/tuntap_user.c 2007-03-06 12:09:57.000000000 -0500
@@ -37,7 +37,8 @@ static void tuntap_add_addr(unsigned cha
struct tuntap_data *pri = data;

tap_check_ips(pri->gate_addr, addr);
- if((pri->fd == -1) || pri->fixed_config) return;
+ if((pri->fd == -1) || pri->fixed_config)
+ return;
open_addr(addr, netmask, pri->dev_name);
}

@@ -46,7 +47,8 @@ static void tuntap_del_addr(unsigned cha
{
struct tuntap_data *pri = data;

- if((pri->fd == -1) || pri->fixed_config) return;
+ if((pri->fd == -1) || pri->fixed_config)
+ return;
close_addr(addr, netmask, pri->dev_name);
}

@@ -58,7 +60,7 @@ struct tuntap_pre_exec_data {
static void tuntap_pre_exec(void *arg)
{
struct tuntap_pre_exec_data *data = arg;
-
+
dup2(data->stdout, 1);
os_close_file(data->close_me);
}
@@ -83,7 +85,8 @@ static int tuntap_open_tramp(char *gate,

pid = run_helper(tuntap_pre_exec, &data, argv, NULL);

- if(pid < 0) return(-pid);
+ if(pid < 0)
+ return -pid;

os_close_file(remote);

@@ -114,16 +117,16 @@ static int tuntap_open_tramp(char *gate,
cmsg = CMSG_FIRSTHDR(&msg);
if(cmsg == NULL){
printk("tuntap_open_tramp : didn't receive a message\n");
- return(-EINVAL);
+ return -EINVAL;
}
if((cmsg->cmsg_level != SOL_SOCKET) ||
(cmsg->cmsg_type != SCM_RIGHTS)){
printk("tuntap_open_tramp : didn't receive a descriptor\n");
- return(-EINVAL);
+ return -EINVAL;
}
*fd_out = ((int *) CMSG_DATA(cmsg))[0];
os_set_exec_close(*fd_out, 1);
- return(0);
+ return 0;
}

static int tuntap_open(void *data)
@@ -135,7 +138,7 @@ static int tuntap_open(void *data)

err = tap_open_common(pri->dev, pri->gate_addr);
if(err < 0)
- return(err);
+ return err;

if(pri->fixed_config){
pri->fd = os_open_file("/dev/net/tun",
@@ -143,7 +146,7 @@ static int tuntap_open(void *data)
if(pri->fd < 0){
printk("Failed to open /dev/net/tun, err = %d\n",
-pri->fd);
- return(pri->fd);
+ return pri->fd;
}
memset(&ifr, 0, sizeof(ifr));
ifr.ifr_flags = IFF_TAP | IFF_NO_PI;
@@ -160,7 +163,7 @@ static int tuntap_open(void *data)
if(err < 0){
printk("tuntap_open : os_pipe failed - err = %d\n",
-err);
- return(err);
+ return err;
}

buffer = get_output_buffer(&len);
@@ -175,7 +178,7 @@ static int tuntap_open(void *data)
printk("%s", output);
free_output_buffer(buffer);
printk("tuntap_open_tramp failed - err = %d\n", -err);
- return(err);
+ return err;
}

pri->dev_name = uml_strdup(buffer);
@@ -187,7 +190,7 @@ static int tuntap_open(void *data)
iter_addresses(pri->dev, open_addr, pri->dev_name);
}

- return(pri->fd);
+ return pri->fd;
}

static void tuntap_close(int fd, void *data)
@@ -202,7 +205,7 @@ static void tuntap_close(int fd, void *d

static int tuntap_set_mtu(int mtu, void *data)
{
- return(mtu);
+ return mtu;
}

const struct net_user_info tuntap_user_info = {
@@ -215,14 +218,3 @@ const struct net_user_info tuntap_user_i
.delete_address = tuntap_del_addr,
.max_packet = MAX_PACKET
};
-
-/*
- * 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:
- */
Index: test/arch/um/drivers/chan_user.c
===================================================================
--- test.orig/arch/um/drivers/chan_user.c 2007-03-06 12:09:47.000000000 -0500
+++ test/arch/um/drivers/chan_user.c 2007-03-06 12:10:12.000000000 -0500
@@ -158,7 +158,7 @@ static int winch_tramp(int fd, struct tt
*/
err = run_helper_thread(winch_thread, &data, CLONE_FILES, &stack, 0);
if(err < 0){
- printk("fork of winch_thread failed - errno = %d\n", errno);
+ printk("fork of winch_thread failed - errno = %d\n", err);
goto out_close;
}

Index: test/arch/um/drivers/ubd_user.c
===================================================================
--- test.orig/arch/um/drivers/ubd_user.c 2007-03-06 12:09:47.000000000 -0500
+++ test/arch/um/drivers/ubd_user.c 2007-03-06 12:10:12.000000000 -0500
@@ -47,8 +47,8 @@ int start_io_thread(unsigned long sp, in
pid = clone(io_thread, (void *) sp, CLONE_FILES | CLONE_VM | SIGCHLD,
NULL);
if(pid < 0){
- printk("start_io_thread - clone failed : errno = %d\n", errno);
err = -errno;
+ printk("start_io_thread - clone failed : errno = %d\n", errno);
goto out_close;
}

@@ -60,16 +60,5 @@ int start_io_thread(unsigned long sp, in
kernel_fd = -1;
*fd_out = -1;
out:
- return(err);
+ return err;
}
-
-/*
- * 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:
- */

-
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