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authorKay Sievers <kay.sievers@vrfy.org>2007-08-14 15:15:12 +0200
committerGreg Kroah-Hartman <gregkh@suse.de>2007-10-12 14:51:01 -0700
commit7eff2e7a8b65c25920207324e56611150eb1cd9a (patch)
tree02a0eeba9d25d996233e30c18f258dfae0ae2139 /net
parent8380770c842faef3001e44662953d64ad9a93663 (diff)
downloadlinux-7eff2e7a8b65c25920207324e56611150eb1cd9a.tar.bz2
Driver core: change add_uevent_var to use a struct
This changes the uevent buffer functions to use a struct instead of a long list of parameters. It does no longer require the caller to do the proper buffer termination and size accounting, which is currently wrong in some places. It fixes a known bug where parts of the uevent environment are overwritten because of wrong index calculations. Many thanks to Mathieu Desnoyers for finding bugs and improving the error handling. Signed-off-by: Kay Sievers <kay.sievers@vrfy.org> Cc: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca> Cc: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'net')
-rw-r--r--net/atm/atm_sysfs.c7
-rw-r--r--net/core/net-sysfs.c14
-rw-r--r--net/wireless/sysfs.c3
3 files changed, 7 insertions, 17 deletions
diff --git a/net/atm/atm_sysfs.c b/net/atm/atm_sysfs.c
index f094a0879c16..9ef07eda2c43 100644
--- a/net/atm/atm_sysfs.c
+++ b/net/atm/atm_sysfs.c
@@ -105,10 +105,9 @@ static struct class_device_attribute *atm_attrs[] = {
NULL
};
-static int atm_uevent(struct class_device *cdev, char **envp, int num_envp, char *buf, int size)
+static int atm_uevent(struct class_device *cdev, struct kobj_uevent_env *env)
{
struct atm_dev *adev;
- int i = 0, len = 0;
if (!cdev)
return -ENODEV;
@@ -117,11 +116,9 @@ static int atm_uevent(struct class_device *cdev, char **envp, int num_envp, char
if (!adev)
return -ENODEV;
- if (add_uevent_var(envp, num_envp, &i, buf, size, &len,
- "NAME=%s%d", adev->type, adev->number))
+ if (add_uevent_var(env, "NAME=%s%d", adev->type, adev->number))
return -ENOMEM;
- envp[i] = NULL;
return 0;
}
diff --git a/net/core/net-sysfs.c b/net/core/net-sysfs.c
index 909a03d6c0e9..6628e457ddc0 100644
--- a/net/core/net-sysfs.c
+++ b/net/core/net-sysfs.c
@@ -396,28 +396,22 @@ static struct attribute_group wireless_group = {
#endif /* CONFIG_SYSFS */
#ifdef CONFIG_HOTPLUG
-static int netdev_uevent(struct device *d, char **envp,
- int num_envp, char *buf, int size)
+static int netdev_uevent(struct device *d, struct kobj_uevent_env *env)
{
struct net_device *dev = to_net_dev(d);
- int retval, len = 0, i = 0;
+ int retval;
/* pass interface to uevent. */
- retval = add_uevent_var(envp, num_envp, &i,
- buf, size, &len,
- "INTERFACE=%s", dev->name);
+ retval = add_uevent_var(env, "INTERFACE=%s", dev->name);
if (retval)
goto exit;
/* pass ifindex to uevent.
* ifindex is useful as it won't change (interface name may change)
* and is what RtNetlink uses natively. */
- retval = add_uevent_var(envp, num_envp, &i,
- buf, size, &len,
- "IFINDEX=%d", dev->ifindex);
+ retval = add_uevent_var(env, "IFINDEX=%d", dev->ifindex);
exit:
- envp[i] = NULL;
return retval;
}
#endif
diff --git a/net/wireless/sysfs.c b/net/wireless/sysfs.c
index 2d5d2255a27c..29f820e18251 100644
--- a/net/wireless/sysfs.c
+++ b/net/wireless/sysfs.c
@@ -53,8 +53,7 @@ static void wiphy_dev_release(struct device *dev)
}
#ifdef CONFIG_HOTPLUG
-static int wiphy_uevent(struct device *dev, char **envp,
- int num_envp, char *buf, int size)
+static int wiphy_uevent(struct device *dev, struct kobj_uevent_env *env)
{
/* TODO, we probably need stuff here */
return 0;