aboutsummaryrefslogtreecommitdiff
path: root/arch/um/drivers
diff options
context:
space:
mode:
Diffstat (limited to 'arch/um/drivers')
-rw-r--r--arch/um/drivers/daemon_user.c6
-rw-r--r--arch/um/drivers/line.c19
-rw-r--r--arch/um/drivers/mconsole_kern.c36
-rw-r--r--arch/um/drivers/net_kern.c31
-rw-r--r--arch/um/drivers/ssl.c9
-rw-r--r--arch/um/drivers/stdio_console.c7
-rw-r--r--arch/um/drivers/ubd_kern.c37
7 files changed, 106 insertions, 39 deletions
diff --git a/arch/um/drivers/daemon_user.c b/arch/um/drivers/daemon_user.c
index cf15b4a8b51..c1b03f7c1da 100644
--- a/arch/um/drivers/daemon_user.c
+++ b/arch/um/drivers/daemon_user.c
@@ -157,9 +157,9 @@ static void daemon_remove(void *data)
os_close_file(pri->fd);
os_close_file(pri->control);
- if(pri->data_addr != NULL) kfree(pri->data_addr);
- if(pri->ctl_addr != NULL) kfree(pri->ctl_addr);
- if(pri->local_addr != NULL) kfree(pri->local_addr);
+ kfree(pri->data_addr);
+ kfree(pri->ctl_addr);
+ kfree(pri->local_addr);
}
int daemon_user_write(int fd, void *buf, int len, struct daemon_data *pri)
diff --git a/arch/um/drivers/line.c b/arch/um/drivers/line.c
index 0f59736db32..2bb4c4f5dec 100644
--- a/arch/um/drivers/line.c
+++ b/arch/um/drivers/line.c
@@ -602,11 +602,26 @@ int line_get_config(char *name, struct line *lines, unsigned int num, char *str,
return n;
}
-int line_remove(struct line *lines, unsigned int num, char *str)
+int line_id(char **str, int *start_out, int *end_out)
+{
+ char *end;
+ int n;
+
+ n = simple_strtoul(*str, &end, 0);
+ if((*end != '\0') || (end == *str))
+ return -1;
+
+ *str = end;
+ *start_out = n;
+ *end_out = n;
+ return n;
+}
+
+int line_remove(struct line *lines, unsigned int num, int n)
{
char config[sizeof("conxxxx=none\0")];
- sprintf(config, "%s=none", str);
+ sprintf(config, "%d=none", n);
return !line_setup(lines, num, config, 0);
}
diff --git a/arch/um/drivers/mconsole_kern.c b/arch/um/drivers/mconsole_kern.c
index d7c7adcc0a6..404de41a4f6 100644
--- a/arch/um/drivers/mconsole_kern.c
+++ b/arch/um/drivers/mconsole_kern.c
@@ -419,8 +419,9 @@ void mconsole_config(struct mc_request *req)
void mconsole_remove(struct mc_request *req)
{
struct mc_device *dev;
- char *ptr = req->request.data;
- int err;
+ char *ptr = req->request.data, *err_msg = "";
+ char error[256];
+ int err, start, end, n;
ptr += strlen("remove");
while(isspace(*ptr)) ptr++;
@@ -429,8 +430,35 @@ void mconsole_remove(struct mc_request *req)
mconsole_reply(req, "Bad remove option", 1, 0);
return;
}
- err = (*dev->remove)(&ptr[strlen(dev->name)]);
- mconsole_reply(req, "", err, 0);
+
+ ptr = &ptr[strlen(dev->name)];
+
+ err = 1;
+ n = (*dev->id)(&ptr, &start, &end);
+ if(n < 0){
+ err_msg = "Couldn't parse device number";
+ goto out;
+ }
+ else if((n < start) || (n > end)){
+ sprintf(error, "Invalid device number - must be between "
+ "%d and %d", start, end);
+ err_msg = error;
+ goto out;
+ }
+
+ err = (*dev->remove)(n);
+ switch(err){
+ case -ENODEV:
+ err_msg = "Device doesn't exist";
+ break;
+ case -EBUSY:
+ err_msg = "Device is currently open";
+ break;
+ default:
+ break;
+ }
+ out:
+ mconsole_reply(req, err_msg, err, 0);
}
#ifdef CONFIG_MAGIC_SYSRQ
diff --git a/arch/um/drivers/net_kern.c b/arch/um/drivers/net_kern.c
index 5388a742869..1495007bf6c 100644
--- a/arch/um/drivers/net_kern.c
+++ b/arch/um/drivers/net_kern.c
@@ -612,25 +612,35 @@ static int net_config(char *str)
return(err);
}
-static int net_remove(char *str)
+static int net_id(char **str, int *start_out, int *end_out)
+{
+ char *end;
+ int n;
+
+ n = simple_strtoul(*str, &end, 0);
+ if((*end != '\0') || (end == *str))
+ return -1;
+
+ *start_out = n;
+ *end_out = n;
+ *str = end;
+ return n;
+}
+
+static int net_remove(int n)
{
struct uml_net *device;
struct net_device *dev;
struct uml_net_private *lp;
- char *end;
- int n;
-
- n = simple_strtoul(str, &end, 0);
- if((*end != '\0') || (end == str))
- return(-1);
device = find_device(n);
if(device == NULL)
- return(0);
+ return -ENODEV;
dev = device->dev;
lp = dev->priv;
- if(lp->fd > 0) return(-1);
+ if(lp->fd > 0)
+ return -EBUSY;
if(lp->remove != NULL) (*lp->remove)(&lp->user);
unregister_netdev(dev);
platform_device_unregister(&device->pdev);
@@ -638,13 +648,14 @@ static int net_remove(char *str)
list_del(&device->list);
kfree(device);
free_netdev(dev);
- return(0);
+ return 0;
}
static struct mc_device net_mc = {
.name = "eth",
.config = net_config,
.get_config = NULL,
+ .id = net_id,
.remove = net_remove,
};
diff --git a/arch/um/drivers/ssl.c b/arch/um/drivers/ssl.c
index b32a77010fb..62e04ecfada 100644
--- a/arch/um/drivers/ssl.c
+++ b/arch/um/drivers/ssl.c
@@ -49,7 +49,7 @@ static struct chan_opts opts = {
static int ssl_config(char *str);
static int ssl_get_config(char *dev, char *str, int size, char **error_out);
-static int ssl_remove(char *str);
+static int ssl_remove(int n);
static struct line_driver driver = {
.name = "UML serial line",
@@ -69,6 +69,7 @@ static struct line_driver driver = {
.name = "ssl",
.config = ssl_config,
.get_config = ssl_get_config,
+ .id = line_id,
.remove = ssl_remove,
},
};
@@ -94,10 +95,10 @@ static int ssl_get_config(char *dev, char *str, int size, char **error_out)
str, size, error_out));
}
-static int ssl_remove(char *str)
+static int ssl_remove(int n)
{
- return(line_remove(serial_lines,
- sizeof(serial_lines)/sizeof(serial_lines[0]), str));
+ return line_remove(serial_lines,
+ sizeof(serial_lines)/sizeof(serial_lines[0]), n);
}
int ssl_open(struct tty_struct *tty, struct file *filp)
diff --git a/arch/um/drivers/stdio_console.c b/arch/um/drivers/stdio_console.c
index afbe1e71ed8..005aa6333b6 100644
--- a/arch/um/drivers/stdio_console.c
+++ b/arch/um/drivers/stdio_console.c
@@ -55,7 +55,7 @@ static struct chan_opts opts = {
static int con_config(char *str);
static int con_get_config(char *dev, char *str, int size, char **error_out);
-static int con_remove(char *str);
+static int con_remove(int n);
static struct line_driver driver = {
.name = "UML console",
@@ -75,6 +75,7 @@ static struct line_driver driver = {
.name = "con",
.config = con_config,
.get_config = con_get_config,
+ .id = line_id,
.remove = con_remove,
},
};
@@ -99,9 +100,9 @@ static int con_get_config(char *dev, char *str, int size, char **error_out)
size, error_out));
}
-static int con_remove(char *str)
+static int con_remove(int n)
{
- return(line_remove(vts, sizeof(vts)/sizeof(vts[0]), str));
+ return line_remove(vts, sizeof(vts)/sizeof(vts[0]), n);
}
static int con_open(struct tty_struct *tty, struct file *filp)
diff --git a/arch/um/drivers/ubd_kern.c b/arch/um/drivers/ubd_kern.c
index 2a7f6892c55..344b24d09a7 100644
--- a/arch/um/drivers/ubd_kern.c
+++ b/arch/um/drivers/ubd_kern.c
@@ -754,24 +754,34 @@ static int ubd_get_config(char *name, char *str, int size, char **error_out)
return(len);
}
-static int ubd_remove(char *str)
+static int ubd_id(char **str, int *start_out, int *end_out)
+{
+ int n;
+
+ n = parse_unit(str);
+ *start_out = 0;
+ *end_out = MAX_DEV - 1;
+ return n;
+}
+
+static int ubd_remove(int n)
{
struct ubd *dev;
- int n, err = -ENODEV;
+ int err = -ENODEV;
- n = parse_unit(&str);
+ spin_lock(&ubd_lock);
- if((n < 0) || (n >= MAX_DEV))
- return(err);
+ if(ubd_gendisk[n] == NULL)
+ goto out;
dev = &ubd_dev[n];
- if(dev->count > 0)
- return(-EBUSY); /* you cannot remove a open disk */
- err = 0;
- spin_lock(&ubd_lock);
+ if(dev->file == NULL)
+ goto out;
- if(ubd_gendisk[n] == NULL)
+ /* you cannot remove a open disk */
+ err = -EBUSY;
+ if(dev->count > 0)
goto out;
del_gendisk(ubd_gendisk[n]);
@@ -787,15 +797,16 @@ static int ubd_remove(char *str)
platform_device_unregister(&dev->pdev);
*dev = ((struct ubd) DEFAULT_UBD);
err = 0;
- out:
- spin_unlock(&ubd_lock);
- return(err);
+out:
+ spin_unlock(&ubd_lock);
+ return err;
}
static struct mc_device ubd_mc = {
.name = "ubd",
.config = ubd_config,
.get_config = ubd_get_config,
+ .id = ubd_id,
.remove = ubd_remove,
};
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-27 11:54:56 +0000