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authorKay Sievers <kay.sievers@vrfy.org>2007-02-02 16:39:12 +0100
committerGreg Kroah-Hartman <gregkh@suse.de>2007-02-16 15:19:15 -0800
commitc353c3fb0700a3c17ea2b0237710a184232ccd7f (patch)
tree7b5fd590bd9b0a08bee8425ad074e993629683d1 /kernel/module.c
parentDriver.h copyright update (diff)
downloadlinux-dev-c353c3fb0700a3c17ea2b0237710a184232ccd7f.tar.xz
linux-dev-c353c3fb0700a3c17ea2b0237710a184232ccd7f.zip
Driver core: let request_module() send a /sys/modules/kmod/-uevent
On recent systems, calls to /sbin/modprobe are handled by udev depending on the kind of device the kernel has discovered. This patch creates an uevent for the kernels internal request_module(), to let udev take control over the request, instead of forking the binary directly by the kernel. The direct execution of /sbin/modprobe can be disabled by setting: /sys/module/kmod/mod_request_helper (/proc/sys/kernel/modprobe) to an empty string, the same way /proc/sys/kernel/hotplug is disabled on an udev system. Signed-off-by: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to '')
-rw-r--r--kernel/module.c26
1 files changed, 16 insertions, 10 deletions
diff --git a/kernel/module.c b/kernel/module.c
index 8a94e054230c..225501f620ff 100644
--- a/kernel/module.c
+++ b/kernel/module.c
@@ -653,20 +653,11 @@ static void wait_for_zero_refcount(struct module *mod)
mutex_lock(&module_mutex);
}
-asmlinkage long
-sys_delete_module(const char __user *name_user, unsigned int flags)
+int delete_module(const char *name, unsigned int flags)
{
struct module *mod;
- char name[MODULE_NAME_LEN];
int ret, forced = 0;
- if (!capable(CAP_SYS_MODULE))
- return -EPERM;
-
- if (strncpy_from_user(name, name_user, MODULE_NAME_LEN-1) < 0)
- return -EFAULT;
- name[MODULE_NAME_LEN-1] = '\0';
-
if (mutex_lock_interruptible(&module_mutex) != 0)
return -EINTR;
@@ -727,6 +718,21 @@ sys_delete_module(const char __user *name_user, unsigned int flags)
return ret;
}
+asmlinkage long
+sys_delete_module(const char __user *name_user, unsigned int flags)
+{
+ char name[MODULE_NAME_LEN];
+
+ if (!capable(CAP_SYS_MODULE))
+ return -EPERM;
+
+ if (strncpy_from_user(name, name_user, MODULE_NAME_LEN-1) < 0)
+ return -EFAULT;
+ name[MODULE_NAME_LEN-1] = '\0';
+
+ return delete_module(name, flags);
+}
+
static void print_unload_info(struct seq_file *m, struct module *mod)
{
struct module_use *use;