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uml: userspace files should call libc directly

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A number of files that were changed in the recent removal of tt mode
are userspace files which call the os_* wrappers instead of calling
libc directly.  A few other files were affected by this, through

This patch makes these call glibc directly.

There are also style fixes in the affected areas.

os_print_error has no remaining callers, so it is deleted.

There is a interface change to os_set_exec_close, eliminating a
parameter which was always the same.  The callers are fixed as well.

os_process_pc got its error path cleaned up.

Signed-off-by: Jeff Dike <jdike@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Jeff Dike
2007-10-16 01:27:11 -07:00
committed by Linus Torvalds
parent b21d4b08b6
commit 512b6fb1c1
12 changed files with 138 additions and 121 deletions
Download Patch File Download Diff File Expand all files Collapse all files

61
arch/um/os-Linux/drivers/ethertap_user.c
View File

@@ -87,11 +87,11 @@ static void etap_pre_exec(void *arg)
struct etap_pre_exec_data *data = arg;
dup2(data->control_remote, 1);
os_close_file(data->data_me);
os_close_file(data->control_me);
close(data->data_me);
close(data->control_me);
}
static int etap_tramp(char *dev, char *gate, int control_me,
static int etap_tramp(char *dev, char *gate, int control_me,
int control_remote, int data_me, int data_remote)
{
struct etap_pre_exec_data pe_data;
@@ -101,7 +101,7 @@ static int etap_tramp(char *dev, char *gate, int control_me,
char gate_buf[sizeof("nnn.nnn.nnn.nnn\0")];
char *setup_args[] = { "uml_net", version_buf, "ethertap", dev,
data_fd_buf, gate_buf, NULL };
char *nosetup_args[] = { "uml_net", version_buf, "ethertap",
char *nosetup_args[] = { "uml_net", version_buf, "ethertap",
dev, data_fd_buf, NULL };
char **args, c;
@@ -121,8 +121,8 @@ static int etap_tramp(char *dev, char *gate, int control_me,
if(pid < 0)
err = pid;
os_close_file(data_remote);
os_close_file(control_remote);
close(data_remote);
close(control_remote);
CATCH_EINTR(n = read(control_me, &c, sizeof(c)));
if(n != sizeof(c)){
err = -errno;
@@ -151,19 +151,23 @@ static int etap_open(void *data)
if(err)
return err;
err = os_pipe(data_fds, 0, 0);
if(err < 0){
printk("data os_pipe failed - err = %d\n", -err);
err = socketpair(AF_UNIX, SOCK_DGRAM, 0, data_fds);
if(err){
err = -errno;
printk("etap_open - data socketpair failed - err = %d\n",
errno);
return err;
}
err = os_pipe(control_fds, 1, 0);
if(err < 0){
printk("control os_pipe failed - err = %d\n", -err);
return err;
err = socketpair(AF_UNIX, SOCK_STREAM, 0, control_fds);
if(err){
err = -errno;
printk("etap_open - control socketpair failed - err = %d\n",
errno);
goto out_close_data;
}
err = etap_tramp(pri->dev_name, pri->gate_addr, control_fds[0],
err = etap_tramp(pri->dev_name, pri->gate_addr, control_fds[0],
control_fds[1], data_fds[0], data_fds[1]);
output_len = UM_KERN_PAGE_SIZE;
output = kmalloc(output_len, UM_GFP_KERNEL);
@@ -178,13 +182,21 @@ static int etap_open(void *data)
if(err < 0){
printk("etap_tramp failed - err = %d\n", -err);
return err;
goto out_close_control;
}
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];
out_close_control:
close(control_fds[0]);
close(control_fds[1]);
out_close_data:
close(data_fds[0]);
close(data_fds[1]);
return err;
}
static void etap_close(int fd, void *data)
@@ -192,11 +204,19 @@ static void etap_close(int fd, void *data)
struct ethertap_data *pri = data;
iter_addresses(pri->dev, etap_close_addr, &pri->control_fd);
os_close_file(fd);
os_shutdown_socket(pri->data_fd, 1, 1);
os_close_file(pri->data_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, "
"errno = %d\n", errno);
close(pri->data_fd);
pri->data_fd = -1;
os_close_file(pri->control_fd);
close(pri->control_fd);
pri->control_fd = -1;
}
@@ -216,13 +236,14 @@ static void etap_add_addr(unsigned char *addr, unsigned char *netmask,
etap_open_addr(addr, netmask, &pri->control_fd);
}
static void etap_del_addr(unsigned char *addr, unsigned char *netmask,
static void etap_del_addr(unsigned char *addr, unsigned char *netmask,
void *data)
{
struct ethertap_data *pri = data;
if(pri->control_fd == -1)
return;
etap_close_addr(addr, netmask, &pri->control_fd);
}