diff options
author | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-10-12 15:49:37 -0700 |
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committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-10-12 15:49:37 -0700 |
commit | efefc6eb38d43b8e5daef482f575d767b002004e (patch) | |
tree | 8a3933db1f8721f9bcc9912c800dc8406f4bdf94 /drivers/base/core.c | |
parent | 117494a1b65183f0e3fcc817b07944bc5c465050 (diff) | |
parent | cd59abfcc441b2abb4cf2cd62c1eb0f02a60e8dd (diff) |
Merge master.kernel.org:/pub/scm/linux/kernel/git/gregkh/driver-2.6
* master.kernel.org:/pub/scm/linux/kernel/git/gregkh/driver-2.6: (75 commits)
PM: merge device power-management source files
sysfs: add copyrights
kobject: update the copyrights
kset: add some kerneldoc to help describe what these strange things are
Driver core: rename ktype_edd and ktype_efivar
Driver core: rename ktype_driver
Driver core: rename ktype_device
Driver core: rename ktype_class
driver core: remove subsystem_init()
sysfs: move sysfs file poll implementation to sysfs_open_dirent
sysfs: implement sysfs_open_dirent
sysfs: move sysfs_dirent->s_children into sysfs_dirent->s_dir
sysfs: make sysfs_root a regular directory dirent
sysfs: open code sysfs_attach_dentry()
sysfs: make s_elem an anonymous union
sysfs: make bin attr open get active reference of parent too
sysfs: kill unnecessary NULL pointer check in sysfs_release()
sysfs: kill unnecessary sysfs_get() in open paths
sysfs: reposition sysfs_dirent->s_mode.
sysfs: kill sysfs_update_file()
...
Diffstat (limited to 'drivers/base/core.c')
-rw-r--r-- | drivers/base/core.c | 108 |
1 files changed, 32 insertions, 76 deletions
diff --git a/drivers/base/core.c b/drivers/base/core.c index ec86d6fc236..c1343414d28 100644 --- a/drivers/base/core.c +++ b/drivers/base/core.c @@ -108,7 +108,7 @@ static void device_release(struct kobject * kobj) } } -static struct kobj_type ktype_device = { +static struct kobj_type device_ktype = { .release = device_release, .sysfs_ops = &dev_sysfs_ops, }; @@ -118,7 +118,7 @@ static int dev_uevent_filter(struct kset *kset, struct kobject *kobj) { struct kobj_type *ktype = get_ktype(kobj); - if (ktype == &ktype_device) { + if (ktype == &device_ktype) { struct device *dev = to_dev(kobj); if (dev->uevent_suppress) return 0; @@ -141,33 +141,23 @@ static const char *dev_uevent_name(struct kset *kset, struct kobject *kobj) return NULL; } -static int dev_uevent(struct kset *kset, struct kobject *kobj, char **envp, - int num_envp, char *buffer, int buffer_size) +static int dev_uevent(struct kset *kset, struct kobject *kobj, + struct kobj_uevent_env *env) { struct device *dev = to_dev(kobj); - int i = 0; - int length = 0; int retval = 0; /* add the major/minor if present */ if (MAJOR(dev->devt)) { - add_uevent_var(envp, num_envp, &i, - buffer, buffer_size, &length, - "MAJOR=%u", MAJOR(dev->devt)); - add_uevent_var(envp, num_envp, &i, - buffer, buffer_size, &length, - "MINOR=%u", MINOR(dev->devt)); + add_uevent_var(env, "MAJOR=%u", MAJOR(dev->devt)); + add_uevent_var(env, "MINOR=%u", MINOR(dev->devt)); } if (dev->type && dev->type->name) - add_uevent_var(envp, num_envp, &i, - buffer, buffer_size, &length, - "DEVTYPE=%s", dev->type->name); + add_uevent_var(env, "DEVTYPE=%s", dev->type->name); if (dev->driver) - add_uevent_var(envp, num_envp, &i, - buffer, buffer_size, &length, - "DRIVER=%s", dev->driver->name); + add_uevent_var(env, "DRIVER=%s", dev->driver->name); #ifdef CONFIG_SYSFS_DEPRECATED if (dev->class) { @@ -181,59 +171,43 @@ static int dev_uevent(struct kset *kset, struct kobject *kobj, char **envp, path = kobject_get_path(&parent->kobj, GFP_KERNEL); if (path) { - add_uevent_var(envp, num_envp, &i, - buffer, buffer_size, &length, - "PHYSDEVPATH=%s", path); + add_uevent_var(env, "PHYSDEVPATH=%s", path); kfree(path); } - add_uevent_var(envp, num_envp, &i, - buffer, buffer_size, &length, - "PHYSDEVBUS=%s", parent->bus->name); + add_uevent_var(env, "PHYSDEVBUS=%s", parent->bus->name); if (parent->driver) - add_uevent_var(envp, num_envp, &i, - buffer, buffer_size, &length, - "PHYSDEVDRIVER=%s", parent->driver->name); + add_uevent_var(env, "PHYSDEVDRIVER=%s", + parent->driver->name); } } else if (dev->bus) { - add_uevent_var(envp, num_envp, &i, - buffer, buffer_size, &length, - "PHYSDEVBUS=%s", dev->bus->name); + add_uevent_var(env, "PHYSDEVBUS=%s", dev->bus->name); if (dev->driver) - add_uevent_var(envp, num_envp, &i, - buffer, buffer_size, &length, - "PHYSDEVDRIVER=%s", dev->driver->name); + add_uevent_var(env, "PHYSDEVDRIVER=%s", dev->driver->name); } #endif - /* terminate, set to next free slot, shrink available space */ - envp[i] = NULL; - envp = &envp[i]; - num_envp -= i; - buffer = &buffer[length]; - buffer_size -= length; - + /* have the bus specific function add its stuff */ if (dev->bus && dev->bus->uevent) { - /* have the bus specific function add its stuff */ - retval = dev->bus->uevent(dev, envp, num_envp, buffer, buffer_size); + retval = dev->bus->uevent(dev, env); if (retval) pr_debug ("%s: bus uevent() returned %d\n", __FUNCTION__, retval); } + /* have the class specific function add its stuff */ if (dev->class && dev->class->dev_uevent) { - /* have the class specific function add its stuff */ - retval = dev->class->dev_uevent(dev, envp, num_envp, buffer, buffer_size); + retval = dev->class->dev_uevent(dev, env); if (retval) pr_debug("%s: class uevent() returned %d\n", __FUNCTION__, retval); } + /* have the device type specific fuction add its stuff */ if (dev->type && dev->type->uevent) { - /* have the device type specific fuction add its stuff */ - retval = dev->type->uevent(dev, envp, num_envp, buffer, buffer_size); + retval = dev->type->uevent(dev, env); if (retval) pr_debug("%s: dev_type uevent() returned %d\n", __FUNCTION__, retval); @@ -253,22 +227,18 @@ static ssize_t show_uevent(struct device *dev, struct device_attribute *attr, { struct kobject *top_kobj; struct kset *kset; - char *envp[32]; - char *data = NULL; - char *pos; + struct kobj_uevent_env *env = NULL; int i; size_t count = 0; int retval; /* search the kset, the device belongs to */ top_kobj = &dev->kobj; - if (!top_kobj->kset && top_kobj->parent) { - do { - top_kobj = top_kobj->parent; - } while (!top_kobj->kset && top_kobj->parent); - } + while (!top_kobj->kset && top_kobj->parent) + top_kobj = top_kobj->parent; if (!top_kobj->kset) goto out; + kset = top_kobj->kset; if (!kset->uevent_ops || !kset->uevent_ops->uevent) goto out; @@ -278,43 +248,29 @@ static ssize_t show_uevent(struct device *dev, struct device_attribute *attr, if (!kset->uevent_ops->filter(kset, &dev->kobj)) goto out; - data = (char *)get_zeroed_page(GFP_KERNEL); - if (!data) + env = kzalloc(sizeof(struct kobj_uevent_env), GFP_KERNEL); + if (!env) return -ENOMEM; /* let the kset specific function add its keys */ - pos = data; - memset(envp, 0, sizeof(envp)); - retval = kset->uevent_ops->uevent(kset, &dev->kobj, - envp, ARRAY_SIZE(envp), - pos, PAGE_SIZE); + retval = kset->uevent_ops->uevent(kset, &dev->kobj, env); if (retval) goto out; /* copy keys to file */ - for (i = 0; envp[i]; i++) { - pos = &buf[count]; - count += sprintf(pos, "%s\n", envp[i]); - } + for (i = 0; i < env->envp_idx; i++) + count += sprintf(&buf[count], "%s\n", env->envp[i]); out: - free_page((unsigned long)data); + kfree(env); return count; } static ssize_t store_uevent(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { - size_t len = count; enum kobject_action action; - if (len && buf[len-1] == '\n') - len--; - - for (action = 0; action < KOBJ_MAX; action++) { - if (strncmp(kobject_actions[action], buf, len) != 0) - continue; - if (kobject_actions[action][len] != '\0') - continue; + if (kobject_action_type(buf, count, &action) == 0) { kobject_uevent(&dev->kobj, action); goto out; } @@ -449,7 +405,7 @@ static struct device_attribute devt_attr = * devices_subsys - structure to be registered with kobject core. */ -decl_subsys(devices, &ktype_device, &device_uevent_ops); +decl_subsys(devices, &device_ktype, &device_uevent_ops); /** |