diff options
47 files changed, 300 insertions, 636 deletions
diff --git a/arch/ia64/sn/kernel/tiocx.c b/arch/ia64/sn/kernel/tiocx.c index 5a289e4..a88eba3 100644 --- a/arch/ia64/sn/kernel/tiocx.c +++ b/arch/ia64/sn/kernel/tiocx.c @@ -66,8 +66,7 @@ static int tiocx_match(struct device *dev, struct device_driver *drv) } -static int tiocx_uevent(struct device *dev, char **envp, int num_envp, - char *buffer, int buffer_size) +static int tiocx_uevent(struct device *dev, struct kobj_uevent_env *env) { return -ENODEV; } diff --git a/arch/powerpc/kernel/of_device.c b/arch/powerpc/kernel/of_device.c index 89b911e..8f3db32 100644 --- a/arch/powerpc/kernel/of_device.c +++ b/arch/powerpc/kernel/of_device.c @@ -57,26 +57,21 @@ ssize_t of_device_get_modalias(struct of_device *ofdev, return tsize; } -int of_device_uevent(struct device *dev, - char **envp, int num_envp, char *buffer, int buffer_size) +int of_device_uevent(struct device *dev, struct kobj_uevent_env *env) { struct of_device *ofdev; const char *compat; - int i = 0, length = 0, seen = 0, cplen, sl; + int seen = 0, cplen, sl; if (!dev) return -ENODEV; ofdev = to_of_device(dev); - if (add_uevent_var(envp, num_envp, &i, - buffer, buffer_size, &length, - "OF_NAME=%s", ofdev->node->name)) + if (add_uevent_var(env, "OF_NAME=%s", ofdev->node->name)) return -ENOMEM; - if (add_uevent_var(envp, num_envp, &i, - buffer, buffer_size, &length, - "OF_TYPE=%s", ofdev->node->type)) + if (add_uevent_var(env, "OF_TYPE=%s", ofdev->node->type)) return -ENOMEM; /* Since the compatible field can contain pretty much anything @@ -85,9 +80,7 @@ int of_device_uevent(struct device *dev, compat = of_get_property(ofdev->node, "compatible", &cplen); while (compat && *compat && cplen > 0) { - if (add_uevent_var(envp, num_envp, &i, - buffer, buffer_size, &length, - "OF_COMPATIBLE_%d=%s", seen, compat)) + if (add_uevent_var(env, "OF_COMPATIBLE_%d=%s", seen, compat)) return -ENOMEM; sl = strlen (compat) + 1; @@ -96,25 +89,17 @@ int of_device_uevent(struct device *dev, seen++; } - if (add_uevent_var(envp, num_envp, &i, - buffer, buffer_size, &length, - "OF_COMPATIBLE_N=%d", seen)) + if (add_uevent_var(env, "OF_COMPATIBLE_N=%d", seen)) return -ENOMEM; /* modalias is trickier, we add it in 2 steps */ - if (add_uevent_var(envp, num_envp, &i, - buffer, buffer_size, &length, - "MODALIAS=")) + if (add_uevent_var(env, "MODALIAS=")) return -ENOMEM; - - sl = of_device_get_modalias(ofdev, &buffer[length-1], - buffer_size-length); - if (sl >= (buffer_size-length)) + sl = of_device_get_modalias(ofdev, &env->buf[env->buflen-1], + sizeof(env->buf) - env->buflen); + if (sl >= (sizeof(env->buf) - env->buflen)) return -ENOMEM; - - length += sl; - - envp[i] = NULL; + env->buflen += sl; return 0; } diff --git a/arch/powerpc/kernel/vio.c b/arch/powerpc/kernel/vio.c index cb22a35..19a5656 100644 --- a/arch/powerpc/kernel/vio.c +++ b/arch/powerpc/kernel/vio.c @@ -317,30 +317,20 @@ static int vio_bus_match(struct device *dev, struct device_driver *drv) return (ids != NULL) && (vio_match_device(ids, vio_dev) != NULL); } -static int vio_hotplug(struct device *dev, char **envp, int num_envp, - char *buffer, int buffer_size) +static int vio_hotplug(struct device *dev, struct kobj_uevent_env *env) { const struct vio_dev *vio_dev = to_vio_dev(dev); struct device_node *dn; const char *cp; - int length; - - if (!num_envp) - return -ENOMEM; dn = dev->archdata.of_node; if (!dn) return -ENODEV; - cp = of_get_property(dn, "compatible", &length); + cp = of_get_property(dn, "compatible", NULL); if (!cp) return -ENODEV; - envp[0] = buffer; - length = scnprintf(buffer, buffer_size, "MODALIAS=vio:T%sS%s", - vio_dev->type, cp); - if ((buffer_size - length) <= 0) - return -ENOMEM; - envp[1] = NULL; + add_uevent_var(env, "MODALIAS=vio:T%sS%s", vio_dev->type, cp); return 0; } diff --git a/arch/powerpc/platforms/ps3/system-bus.c b/arch/powerpc/platforms/ps3/system-bus.c index 4bb634a..ea0b2c7 100644 --- a/arch/powerpc/platforms/ps3/system-bus.c +++ b/arch/powerpc/platforms/ps3/system-bus.c @@ -437,18 +437,13 @@ static void ps3_system_bus_shutdown(struct device *_dev) dev_dbg(&dev->core, " <- %s:%d\n", __func__, __LINE__); } -static int ps3_system_bus_uevent(struct device *_dev, char **envp, - int num_envp, char *buffer, int buffer_size) +static int ps3_system_bus_uevent(struct device *_dev, struct kobj_uevent_env *env) { struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); int i = 0, length = 0; - if (add_uevent_var(envp, num_envp, &i, buffer, buffer_size, - &length, "MODALIAS=ps3:%d", - dev->match_id)) + if (add_uevent_var(env, "MODALIAS=ps3:%d", dev->match_id)) return -ENOMEM; - - envp[i] = NULL; return 0; } diff --git a/block/genhd.c b/block/genhd.c index 3af1e7a..e609996 100644 --- a/block/genhd.c +++ b/block/genhd.c @@ -540,61 +540,42 @@ static int block_uevent_filter(struct kset *kset, struct kobject *kobj) return ((ktype == &ktype_block) || (ktype == &ktype_part)); } -static int block_uevent(struct kset *kset, struct kobject *kobj, char **envp, - int num_envp, char *buffer, int buffer_size) +static int block_uevent(struct kset *kset, struct kobject *kobj, + struct kobj_uevent_env *env) { struct kobj_type *ktype = get_ktype(kobj); struct device *physdev; struct gendisk *disk; struct hd_struct *part; - int length = 0; - int i = 0; if (ktype == &ktype_block) { disk = container_of(kobj, struct gendisk, kobj); - add_uevent_var(envp, num_envp, &i, buffer, buffer_size, - &length, "MINOR=%u", disk->first_minor); + add_uevent_var(env, "MINOR=%u", disk->first_minor); } else if (ktype == &ktype_part) { disk = container_of(kobj->parent, struct gendisk, kobj); part = container_of(kobj, struct hd_struct, kobj); - add_uevent_var(envp, num_envp, &i, buffer, buffer_size, - &length, "MINOR=%u", + add_uevent_var(env, "MINOR=%u", disk->first_minor + part->partno); } else return 0; - add_uevent_var(envp, num_envp, &i, buffer, buffer_size, &length, - "MAJOR=%u", disk->major); + add_uevent_var(env, "MAJOR=%u", disk->major); /* add physical device, backing this device */ physdev = disk->driverfs_dev; if (physdev) { char *path = kobject_get_path(&physdev->kobj, GFP_KERNEL); - add_uevent_var(envp, num_envp, &i, buffer, buffer_size, - &length, "PHYSDEVPATH=%s", path); + add_uevent_var(env, "PHYSDEVPATH=%s", path); kfree(path); if (physdev->bus) - add_uevent_var(envp, num_envp, &i, - buffer, buffer_size, &length, - "PHYSDEVBUS=%s", - physdev->bus->name); + add_uevent_var(env, "PHYSDEVBUS=%s", physdev->bus->name); if (physdev->driver) - add_uevent_var(envp, num_envp, &i, - buffer, buffer_size, &length, - "PHYSDEVDRIVER=%s", - physdev->driver->name); + add_uevent_var(env, physdev->driver->name); } - /* terminate, set to next free slot, shrink available space */ - envp[i] = NULL; - envp = &envp[i]; - num_envp -= i; - buffer = &buffer[length]; - buffer_size -= length; - return 0; } diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c index 64620d6..5b4d462 100644 --- a/drivers/acpi/scan.c +++ b/drivers/acpi/scan.c @@ -319,16 +319,18 @@ static int acpi_bus_match(struct device *dev, struct device_driver *drv) return !acpi_match_device_ids(acpi_dev, acpi_drv->ids); } -static int acpi_device_uevent(struct device *dev, char **envp, int num_envp, - char *buffer, int buffer_size) +static int acpi_device_uevent(struct device *dev, struct kobj_uevent_env *env) { struct acpi_device *acpi_dev = to_acpi_device(dev); + int len; - strcpy(buffer, "MODALIAS="); - if (create_modalias(acpi_dev, buffer + 9, buffer_size - 9) > 0) { - envp[0] = buffer; - envp[1] = NULL; - } + if (add_uevent_var(env, "MODALIAS=")) + return -ENOMEM; + len = create_modalias(acpi_dev, &env->buf[env->buflen - 1], + sizeof(env->buf) - env->buflen); + if (len >= (sizeof(env->buf) - env->buflen)) + return -ENOMEM; + env->buflen += len; return 0; } diff --git a/drivers/amba/bus.c b/drivers/amba/bus.c index 268e301..6b94fb7 100644 --- a/drivers/amba/bus.c +++ b/drivers/amba/bus.c @@ -44,15 +44,12 @@ static int amba_match(struct device *dev, struct device_driver *drv) } #ifdef CONFIG_HOTPLUG -static int amba_uevent(struct device *dev, char **envp, int nr_env, char *buf, int bufsz) +static int amba_uevent(struct device *dev, struct kobj_uevent_env *env) { struct amba_device *pcdev = to_amba_device(dev); - int retval = 0, i = 0, len = 0; + int retval = 0; - retval = add_uevent_var(envp, nr_env, &i, - buf, bufsz, &len, - "AMBA_ID=%08x", pcdev->periphid); - envp[i] = NULL; + retval = add_uevent_var(env, "AMBA_ID=%08x", pcdev->periphid); return retval; } #else diff --git a/drivers/base/class.c b/drivers/base/class.c index 4d22226..ecd6336 100644 --- a/drivers/base/class.c +++ b/drivers/base/class.c @@ -180,8 +180,7 @@ static void class_device_create_release(struct class_device *class_dev) /* needed to allow these devices to have parent class devices */ static int class_device_create_uevent(struct class_device *class_dev, - char **envp, int num_envp, - char *buffer, int buffer_size) + struct kobj_uevent_env *env) { pr_debug("%s called for %s\n", __FUNCTION__, class_dev->class_id); return 0; @@ -403,64 +402,43 @@ static void remove_deprecated_class_device_links(struct class_device *cd) { } #endif -static int class_uevent(struct kset *kset, struct kobject *kobj, char **envp, - int num_envp, char *buffer, int buffer_size) +static int class_uevent(struct kset *kset, struct kobject *kobj, + struct kobj_uevent_env *env) { struct class_device *class_dev = to_class_dev(kobj); struct device *dev = class_dev->dev; - int i = 0; - int length = 0; int retval = 0; pr_debug("%s - name = %s\n", __FUNCTION__, class_dev->class_id); if (MAJOR(class_dev->devt)) { - add_uevent_var(envp, num_envp, &i, - buffer, buffer_size, &length, - "MAJOR=%u", MAJOR(class_dev->devt)); + add_uevent_var(env, "MAJOR=%u", MAJOR(class_dev->devt)); - add_uevent_var(envp, num_envp, &i, - buffer, buffer_size, &length, - "MINOR=%u", MINOR(class_dev->devt)); + add_uevent_var(env, "MINOR=%u", MINOR(class_dev->devt)); } if (dev) { const char *path = kobject_get_path(&dev->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); } 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); } - /* terminate, set to next free slot, shrink available space */ - envp[i] = NULL; - envp = &envp[i]; - num_envp -= i; - buffer = &buffer[length]; - buffer_size -= length; - if (class_dev->uevent) { /* have the class device specific function add its stuff */ - retval = class_dev->uevent(class_dev, envp, num_envp, - buffer, buffer_size); + retval = class_dev->uevent(class_dev, env); if (retval) pr_debug("class_dev->uevent() returned %d\n", retval); } else if (class_dev->class->uevent) { /* have the class specific function add its stuff */ - retval = class_dev->class->uevent(class_dev, envp, num_envp, - buffer, buffer_size); + retval = class_dev->class->uevent(class_dev, env); if (retval) pr_debug("class->uevent() returned %d\n", retval); } diff --git a/drivers/base/core.c b/drivers/base/core.c index ec86d6f..d487c03 100644 --- a/drivers/base/core.c +++ b/drivers/base/core.c @@ -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); @@ -253,9 +227,7 @@ 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; @@ -278,26 +250,20 @@ 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; } diff --git a/drivers/base/firmware_class.c b/drivers/base/firmware_class.c index b24efd4..4a1b9bf 100644 --- a/drivers/base/firmware_class.c +++ b/drivers/base/firmware_class.c @@ -88,19 +88,14 @@ static CLASS_ATTR(timeout, 0644, firmware_timeout_show, firmware_timeout_store); static void fw_dev_release(struct device *dev); -static int firmware_uevent(struct device *dev, char **envp, int num_envp, - char *buffer, int buffer_size) +static int firmware_uevent(struct device *dev, struct kobj_uevent_env *env) { struct firmware_priv *fw_priv = dev_get_drvdata(dev); - int i = 0, len = 0; - if (add_uevent_var(envp, num_envp, &i, buffer, buffer_size, &len, - "FIRMWARE=%s", fw_priv->fw_id)) + if (add_uevent_var(env, "FIRMWARE=%s", fw_priv->fw_id)) return -ENOMEM; - if (add_uevent_var(envp, num_envp, &i, buffer, buffer_size, &len, - "TIMEOUT=%i", loading_timeout)) + if (add_uevent_var(env, "TIMEOUT=%i", loading_timeout)) return -ENOMEM; - envp[i] = NULL; return 0; } diff --git a/drivers/base/memory.c b/drivers/base/memory.c index 74b9679..cb99dae 100644 --- a/drivers/base/memory.c +++ b/drivers/base/memory.c @@ -34,8 +34,7 @@ static const char *memory_uevent_name(struct kset *kset, struct kobject *kobj) return MEMORY_CLASS_NAME; } -static int memory_uevent(struct kset *kset, struct kobject *kobj, char **envp, - int num_envp, char *buffer, int buffer_size) +static int memory_uevent(struct kset *kset, struct kobj_uevent_env *env) { int retval = 0; diff --git a/drivers/base/platform.c b/drivers/base/platform.c index 9bfc434..a2e3910 100644 --- a/drivers/base/platform.c +++ b/drivers/base/platform.c @@ -529,13 +529,11 @@ static struct device_attribute platform_dev_attrs[] = { __ATTR_NULL, }; -static int platform_uevent(struct device *dev, char **envp, int num_envp, - char *buffer, int buffer_size) +static int platform_uevent(struct device *dev, struct kobj_uevent_env *env) { struct platform_device *pdev = to_platform_device(dev); - envp[0] = buffer; - snprintf(buffer, buffer_size, "MODALIAS=platform:%s", pdev->name); + add_uevent_var(env, "MODALIAS=platform:%s", pdev->name); return 0; } diff --git a/drivers/eisa/eisa-bus.c b/drivers/eisa/eisa-bus.c index d944647..4d4a473 100644 --- a/drivers/eisa/eisa-bus.c +++ b/drivers/eisa/eisa-bus.c @@ -128,16 +128,11 @@ static int eisa_bus_match (struct device *dev, struct device_driver *drv) return 0; } -static int eisa_bus_uevent(struct device *dev, char **envp, int num_envp, - char *buffer, int buffer_size) +static int eisa_bus_uevent(struct device *dev, struct kobj_uevent_env *env) { struct eisa_device *edev = to_eisa_device(dev); - int i = 0; - int length = 0; - add_uevent_var(envp, num_envp, &i, buffer, buffer_size, &length, - "MODALIAS=" EISA_DEVICE_MODALIAS_FMT, edev->id.sig); - envp[i] = NULL; + add_uevent_var(env, "MODALIAS=" EISA_DEVICE_MODALIAS_FMT, edev->id.sig); return 0; } diff --git a/drivers/firewire/fw-device.c b/drivers/firewire/fw-device.c index 2b65863..56681b3 100644 --- a/drivers/firewire/fw-device.c +++ b/drivers/firewire/fw-device.c @@ -130,23 +130,16 @@ static int get_modalias(struct fw_unit *unit, char *buffer, size_t buffer_size) } static int -fw_unit_uevent(struct device *dev, char **envp, int num_envp, - char *buffer, int buffer_size) +fw_unit_uevent(struct device *dev, struct kobj_uevent_env *env) { struct fw_unit *unit = fw_unit(dev); char modalias[64]; - int length = 0; - int i = 0; get_modalias(unit, modalias, sizeof(modalias)); - if (add_uevent_var(envp, num_envp, &i, - buffer, buffer_size, &length, - "MODALIAS=%s", modalias)) + if (add_uevent_var(env, "MODALIAS=%s", modalias)) return -ENOMEM; - envp[i] = NULL; - return 0; } diff --git a/drivers/firmware/dmi-id.c b/drivers/firmware/dmi-id.c index 59c3b5a..2678098 100644 --- a/drivers/firmware/dmi-id.c +++ b/drivers/firmware/dmi-id.c @@ -134,14 +134,17 @@ static struct attribute_group* sys_dmi_attribute_groups[] = { NULL }; -static int dmi_dev_uevent(struct device *dev, char **envp, - int num_envp, char *buffer, int buffer_size) +static int dmi_dev_uevent(struct device *dev, struct kobj_uevent_env *env) { - strcpy(buffer, "MODALIAS="); - get_modalias(buffer+9, buffer_size-9); - envp[0] = buffer; - envp[1] = NULL; - + ssize_t len; + + if (add_uevent_var(env, "MODALIAS=")) + return -ENOMEM; + len = get_modalias(&env->buf[env->buflen - 1], + sizeof(env->buf) - env->buflen); + if (len >= (sizeof(env->buf) - env->buflen)) + return -ENOMEM; + env->buflen += len; return 0; } diff --git a/drivers/i2c/i2c-core.c b/drivers/i2c/i2c-core.c index d663e69..910a62d 100644 --- a/drivers/i2c/i2c-core.c +++ b/drivers/i2c/i2c-core.c @@ -67,20 +67,16 @@ static int i2c_device_match(struct device *dev, struct device_driver *drv) #ifdef CONFIG_HOTPLUG /* uevent helps with hotplug: modprobe -q $(MODALIAS) */ -static int i2c_device_uevent(struct device *dev, char **envp, int num_envp, - char *buffer, int buffer_size) +static int i2c_device_uevent(struct device *dev, struct kobj_uevent_env *env) { struct i2c_client *client = to_i2c_client(dev); - int i = 0, length = 0; /* by definition, legacy drivers can't hotplug */ if (dev->driver || !client->driver_name) return 0; - if (add_uevent_var(envp, num_envp, &i, buffer, buffer_size, &length, - "MODALIAS=%s", client->driver_name)) + if (add_uevent_var(env, "MODALIAS=%s", client->driver_name)) return -ENOMEM; - envp[i] = NULL; dev_dbg(dev, "uevent\n"); return 0; } diff --git a/drivers/ide/ide.c b/drivers/ide/ide.c index e96212c..a96a8b1 100644 --- a/drivers/ide/ide.c +++ b/drivers/ide/ide.c @@ -1663,20 +1663,13 @@ static struct device_attribute ide_dev_attrs[] = { __ATTR_NULL }; -static int ide_uevent(struct device *dev, char **envp, int num_envp, - char *buffer, int buffer_size) +static int ide_uevent(struct device *dev, struct kobj_uevent_env *env) { ide_drive_t *drive = to_ide_device(dev); - int i = 0; - int length = 0; - - add_uevent_var(envp, num_envp, &i, buffer, buffer_size, &length, - "MEDIA=%s", media_string(drive)); - add_uevent_var(envp, num_envp, &i, buffer, buffer_size, &length, - "DRIVENAME=%s", drive->name); - add_uevent_var(envp, num_envp, &i, buffer, buffer_size, &length, - "MODALIAS=ide:m-%s", media_string(drive)); - envp[i] = NULL; + + add_uevent_var(env, "MEDIA=%s", media_string(drive)); + add_uevent_var(env, "DRIVENAME=%s", drive->name); + add_uevent_var(env, "MODALIAS=ide:m-%s", media_string(drive)); return 0; } diff --git a/drivers/ieee1394/nodemgr.c b/drivers/ieee1394/nodemgr.c index 2ffd534..1939fee 100644 --- a/drivers/ieee1394/nodemgr.c +++ b/drivers/ieee1394/nodemgr.c @@ -153,8 +153,7 @@ struct host_info { }; static int nodemgr_bus_match(struct device * dev, struct device_driver * drv); -static int nodemgr_uevent(struct device *dev, char **envp, int num_envp, - char *buffer, int buffer_size); +static int nodemgr_uevent(struct device *dev, struct kobj_uevent_env *env); static void nodemgr_resume_ne(struct node_entry *ne); static void nodemgr_remove_ne(struct node_entry *ne); static struct node_entry *find_entry_by_guid(u64 guid); @@ -1160,12 +1159,9 @@ static void nodemgr_process_root_directory(struct host_info *hi, struct node_ent #ifdef CONFIG_HOTPLUG -static int nodemgr_uevent(struct device *dev, char **envp, int num_envp, - char *buffer, int buffer_size) +static int nodemgr_uevent(struct device *dev, struct kobj_uevent_env *env) { struct unit_directory *ud; - int i = 0; - int length = 0; int retval = 0; /* ieee1394:venNmoNspNverN */ char buf[8 + 1 + 3 + 8 + 2 + 8 + 2 + 8 + 3 + 8 + 1]; @@ -1180,9 +1176,7 @@ static int nodemgr_uevent(struct device *dev, char **envp, int num_envp, #define PUT_ENVP(fmt,val) \ do { \ - retval = add_uevent_var(envp, num_envp, &i, \ - buffer, buffer_size, &length, \ - fmt, val); \ + retval = add_uevent_var(env, fmt, val); \ if (retval) \ return retval; \ } while (0) @@ -1201,15 +1195,12 @@ do { \ #undef PUT_ENVP - envp[i] = NULL; - return 0; } #else -static int nodemgr_uevent(struct device *dev, char **envp, int num_envp, - char *buffer, int buffer_size) +static int nodemgr_uevent(struct device *dev, struct kobj_uevent_env *env) { return -ENODEV; } diff --git a/drivers/infiniband/core/sysfs.c b/drivers/infiniband/core/sysfs.c index 70b77ae..3d40506 100644 --- a/drivers/infiniband/core/sysfs.c +++ b/drivers/infiniband/core/sysfs.c @@ -434,21 +434,18 @@ static void ib_device_release(struct class_device *cdev) kfree(dev); } -static int ib_device_uevent(struct class_device *cdev, char **envp, - int num_envp, char *buf, int size) +static int ib_device_uevent(struct class_device *cdev, + struct kobj_uevent_env *env) { struct ib_device *dev = container_of(cdev, struct ib_device, class_dev); - int i = 0, len = 0; - if (add_uevent_var(envp, num_envp, &i, buf, size, &len, - "NAME=%s", dev->name)) + if (add_uevent_var(env, "NAME=%s", dev->name)) return -ENOMEM; /* * It would be nice to pass the node GUID with the event... */ - envp[i] = NULL; return 0; } diff --git a/drivers/input/input.c b/drivers/input/input.c index 5fe7555..5dc361c 100644 --- a/drivers/input/input.c +++ b/drivers/input/input.c @@ -859,87 +859,66 @@ static void input_dev_release(struct device *device) * Input uevent interface - loading event handlers based on * device bitfields. */ -static int input_add_uevent_bm_var(char **envp, int num_envp, int *cur_index, - char *buffer, int buffer_size, int *cur_len, +static int input_add_uevent_bm_var(struct kobj_uevent_env *env, const char *name, unsigned long *bitmap, int max) { - if (*cur_index >= num_envp - 1) - return -ENOMEM; - - envp[*cur_index] = buffer + *cur_len; + int len; - *cur_len += snprintf(buffer + *cur_len, max(buffer_size - *cur_len, 0), name); - if (*cur_len >= buffer_size) + if (add_uevent_var(env, "%s=", name)) return -ENOMEM; - *cur_len += input_print_bitmap(buffer + *cur_len, - max(buffer_size - *cur_len, 0), - bitmap, max, 0) + 1; - if (*cur_len > buffer_size) + len = input_print_bitmap(&env->buf[env->buflen - 1], + sizeof(env->buf) - env->buflen, + bitmap, max, 0); + if (len >= (sizeof(env->buf) - env->buflen)) return -ENOMEM; - (*cur_index)++; + env->buflen += len; return 0; } -static int input_add_uevent_modalias_var(char **envp, int num_envp, int *cur_index, - char *buffer, int buffer_size, int *cur_len, +static int input_add_uevent_modalias_var(struct kobj_uevent_env *env, struct input_dev *dev) { - if (*cur_index >= num_envp - 1) - return -ENOMEM; - - envp[*cur_index] = buffer + *cur_len; + int len; - *cur_len += snprintf(buffer + *cur_len, max(buffer_size - *cur_len, 0), - "MODALIAS="); - if (*cur_len >= buffer_size) + if (add_uevent_var(env, "MODALIAS=")) return -ENOMEM; - *cur_len += input_print_modalias(buffer + *cur_len, - max(buffer_size - *cur_len, 0), - dev, 0) + 1; - if (*cur_len > buffer_size) + len = input_print_modalias(&env->buf[env->buflen - 1], + sizeof(env->buf) - env->buflen, + dev, 0); + if (len >= (sizeof(env->buf) - env->buflen)) return -ENOMEM; - (*cur_index)++; + env->buflen += len; return 0; } #define INPUT_ADD_HOTPLUG_VAR(fmt, val...) \ do { \ - int err = add_uevent_var(envp, num_envp, &i, \ - buffer, buffer_size, &len, \ - fmt, val); \ + int err = add_uevent_var(env, fmt, val); \ if (err) \ return err; \ } while (0) #define INPUT_ADD_HOTPLUG_BM_VAR(name, bm, max) \ do { \ - int err = input_add_uevent_bm_var(envp, num_envp, &i, \ - buffer, buffer_size, &len, \ - name, bm, max); \ + int err = input_add_uevent_bm_var(env, name, bm, max); \ if (err) \ return err; \ } while (0) #define INPUT_ADD_HOTPLUG_MODALIAS_VAR(dev) \ do { \ - int err = input_add_uevent_modalias_var(envp, \ - num_envp, &i, \ - buffer, buffer_size, &len, \ - dev); \ + int err = input_add_uevent_modalias_var(env, dev); \ if (err) \ return err; \ } while (0) -static int input_dev_uevent(struct device *device, char **envp, - int num_envp, char *buffer, int buffer_size) +static int input_dev_uevent(struct device *device, struct kobj_uevent_env *env) { struct input_dev *dev = to_input_dev(device); - int i = 0; - int len = 0; INPUT_ADD_HOTPLUG_VAR("PRODUCT=%x/%x/%x/%x", dev->id.bustype, dev->id.vendor, @@ -971,7 +950,6 @@ static int input_dev_uevent(struct device *device, char **envp, INPUT_ADD_HOTPLUG_MODALIAS_VAR(dev); - envp[i] = NULL; return 0; } diff --git a/drivers/input/serio/serio.c b/drivers/input/serio/serio.c index 372ca49..b3bc15a 100644 --- a/drivers/input/serio/serio.c +++ b/drivers/input/serio/serio.c @@ -876,18 +876,14 @@ static int serio_bus_match(struct device *dev, struct device_driver *drv) #define SERIO_ADD_UEVENT_VAR(fmt, val...) \ do { \ - int err = add_uevent_var(envp, num_envp, &i, \ - buffer, buffer_size, &len, \ - fmt, val); \ + int err = add_uevent_var(env, fmt, val); \ if (err) \ return err; \ } while (0) -static int serio_uevent(struct device *dev, char **envp, int num_envp, char *buffer, int buffer_size) +static int serio_uevent(struct device *dev, struct kobj_uevent_env *env) { struct serio *serio; - int i = 0; - int len = 0; if (!dev) return -ENODEV; @@ -900,7 +896,6 @@ static int serio_uevent(struct device *dev, char **envp, int num_envp, char *buf SERIO_ADD_UEVENT_VAR("SERIO_EXTRA=%02x", serio->id.extra); SERIO_ADD_UEVENT_VAR("MODALIAS=serio:ty%02Xpr%02Xid%02Xex%02X", serio->id.type, serio->id.proto, serio->id.id, serio->id.extra); - envp[i] = NULL; return 0; } @@ -908,7 +903,7 @@ static int serio_uevent(struct device *dev, char **envp, int num_envp, char *buf #else -static int serio_uevent(struct device *dev, char **envp, int num_envp, char *buffer, int buffer_size) +static int serio_uevent(struct device *dev, struct kobj_uevent_env *env) { return -ENODEV; } diff --git a/drivers/media/video/pvrusb2/pvrusb2-sysfs.c b/drivers/media/video/pvrusb2/pvrusb2-sysfs.c index 7a78d6b..2ee3c30 100644 --- a/drivers/media/video/pvrusb2/pvrusb2-sysfs.c +++ b/drivers/media/video/pvrusb2/pvrusb2-sysfs.c @@ -905,8 +905,8 @@ struct pvr2_sysfs *pvr2_sysfs_create(struct pvr2_context *mp, } -static int pvr2_sysfs_hotplug(struct device *cd,char **envp, - int numenvp,char *buf,int size) +static int pvr2_sysfs_hotplug(struct device *d, + struct kobj_uevent_env *env) { /* Even though we don't do anything here, we still need this function because sysfs will still try to call it. */ diff --git a/drivers/misc/tifm_core.c b/drivers/misc/tifm_core.c index d195fb0..8f77949 100644 --- a/drivers/misc/tifm_core.c +++ b/drivers/misc/tifm_core.c @@ -57,16 +57,11 @@ static int tifm_bus_match(struct device *dev, struct device_driver *drv) return 0; } -static int tifm_uevent(struct device *dev, char **envp, int num_envp, - char *buffer, int buffer_size) +static int tifm_uevent(struct device *dev, struct kobj_uevent_env *env) { struct tifm_dev *sock = container_of(dev, struct tifm_dev, dev); - int i = 0; - int length = 0; - if (add_uevent_var(envp, num_envp, &i, buffer, buffer_size, &length, - "TIFM_CARD_TYPE=%s", - tifm_media_type_name(sock->type, 1))) + if (add_uevent_var(env, "TIFM_CARD_TYPE=%s", tifm_media_type_name(sock->type, 1))) return -ENOMEM; return 0; diff --git a/drivers/mmc/core/bus.c b/drivers/mmc/core/bus.c index 8d6f601..b0c22ca 100644 --- a/drivers/mmc/core/bus.c +++ b/drivers/mmc/core/bus.c @@ -58,12 +58,11 @@ static int mmc_bus_match(struct device *dev, struct device_driver *drv) } static int -mmc_bus_uevent(struct device *dev, char **envp, int num_envp, char *buf, - int buf_size) +mmc_bus_uevent(struct device *dev, struct kobj_uevent_env *env) { struct mmc_card *card = dev_to_mmc_card(dev); const char *type; - int i = 0, length = 0; + int retval = 0; switch (card->type) { case MMC_TYPE_MMC: @@ -80,20 +79,14 @@ mmc_bus_uevent(struct device *dev, char **envp, int num_envp, char *buf, } if (type) { - if (add_uevent_var(envp, num_envp, &i, - buf, buf_size, &length, - "MMC_TYPE=%s", type)) - return -ENOMEM; + retval = add_uevent_var(env, "MMC_TYPE=%s", type); + if (retval) + return retval; } - if (add_uevent_var(envp, num_envp, &i, - buf, buf_size, &length, - "MMC_NAME=%s", mmc_card_name(card))) - return -ENOMEM; + retval = add_uevent_var(env, "MMC_NAME=%s", mmc_card_name(card)); - envp[i] = NULL; - - return 0; + return retval; } static int mmc_bus_probe(struct device *dev) diff --git a/drivers/pci/hotplug.c b/drivers/pci/hotplug.c index 1c97e7d..2b5352a 100644 --- a/drivers/pci/hotplug.c +++ b/drivers/pci/hotplug.c @@ -3,12 +3,9 @@ #include <linux/module.h> #include "pci.h" -int pci_uevent(struct device *dev, char **envp, int num_envp, - char *buffer, int buffer_size) +int pci_uevent(struct device *dev, struct kobj_uevent_env *env) { struct pci_dev *pdev; - int i = 0; - int length = 0; if (!dev) return -ENODEV; @@ -17,37 +14,24 @@ int pci_uevent(struct device *dev, char **envp, int num_envp, if (!pdev) return -ENODEV; - if (add_uevent_var(envp, num_envp, &i, - buffer, buffer_size, &length, - "PCI_CLASS=%04X", pdev->class)) + if (add_uevent_var(env, "PCI_CLASS=%04X", pdev->class)) return -ENOMEM; - if (add_uevent_var(envp, num_envp, &i, - buffer, buffer_size, &length, - "PCI_ID=%04X:%04X", pdev->vendor, pdev->device)) + if (add_uevent_var(env, "PCI_ID=%04X:%04X", pdev->vendor, pdev->device)) return -ENOMEM; - if (add_uevent_var(envp, num_envp, &i, - buffer, buffer_size, &length, - "PCI_SUBSYS_ID=%04X:%04X", pdev->subsystem_vendor, + if (add_uevent_var(env, "PCI_SUBSYS_ID=%04X:%04X", pdev->subsystem_vendor, pdev->subsystem_device)) return -ENOMEM; - if (add_uevent_var(envp, num_envp, &i, - buffer, buffer_size, &length, - "PCI_SLOT_NAME=%s", pci_name(pdev))) + if (add_uevent_var(env, "PCI_SLOT_NAME=%s", pci_name(pdev))) return -ENOMEM; - if (add_uevent_var(envp, num_envp, &i, - buffer, buffer_size, &length, - "MODALIAS=pci:v%08Xd%08Xsv%08Xsd%08Xbc%02Xsc%02Xi%02x", + if (add_uevent_var(env, "MODALIAS=pci:v%08Xd%08Xsv%08Xsd%08Xbc%02Xsc%02Xi%02x", pdev->vendor, pdev->device, pdev->subsystem_vendor, pdev->subsystem_device, (u8)(pdev->class >> 16), (u8)(pdev->class >> 8), (u8)(pdev->class))) return -ENOMEM; - - envp[i] = NULL; - return 0; } diff --git a/drivers/pci/pci-driver.c b/drivers/pci/pci-driver.c index 004bc24..f61be3a 100644 --- a/drivers/pci/pci-driver.c +++ b/drivers/pci/pci-driver.c @@ -532,8 +532,7 @@ void pci_dev_put(struct pci_dev *dev) } #ifndef CONFIG_HOTPLUG -int pci_uevent(struct device *dev, char **envp, int num_envp, - char *buffer, int buffer_size) +int pci_uevent(struct device *dev, struct kobj_uevent_env *env) { return -ENODEV; } diff --git a/drivers/pci/pci.h b/drivers/pci/pci.h index 4c36e80..b3a7d5b 100644 --- a/drivers/pci/pci.h +++ b/drivers/pci/pci.h @@ -1,7 +1,6 @@ /* Functions internal to the PCI core code */ -extern int pci_uevent(struct device *dev, char **envp, int num_envp, - char *buffer, int buffer_size); +extern int pci_uevent(struct device *dev, struct kobj_uevent_env *env); extern int pci_create_sysfs_dev_files(struct pci_dev *pdev); extern void pci_remove_sysfs_dev_files(struct pci_dev *pdev); extern void pci_cleanup_rom(struct pci_dev *dev); diff --git a/drivers/pcmcia/cs.c b/drivers/pcmcia/cs.c index f8b13f0..a0aca46 100644 --- a/drivers/pcmcia/cs.c +++ b/drivers/pcmcia/cs.c @@ -907,18 +907,14 @@ int pcmcia_insert_card(struct pcmcia_socket *skt) EXPORT_SYMBOL(pcmcia_insert_card); -static int pcmcia_socket_uevent(struct device *dev, char **envp, - int num_envp, char *buffer, int buffer_size) +static int pcmcia_socket_uevent(struct device *dev, + struct kobj_uevent_env *env) { struct pcmcia_socket *s = container_of(dev, struct pcmcia_socket, dev); - int i = 0, length = 0; - if (add_uevent_var(envp, num_envp, &i, buffer, buffer_size, - &length, "SOCKET_NO=%u", s->sock)) + if (add_uevent_var(env, "SOCKET_NO=%u", s->sock)) return -ENOMEM; - envp[i] = NULL; - return 0; } diff --git a/drivers/pcmcia/ds.c b/drivers/pcmcia/ds.c index a996071..55baa1f 100644 --- a/drivers/pcmcia/ds.c +++ b/drivers/pcmcia/ds.c @@ -1064,11 +1064,10 @@ static int pcmcia_bus_match(struct device * dev, struct device_driver * drv) { #ifdef CONFIG_HOTPLUG -static int pcmcia_bus_uevent(struct device *dev, char **envp, int num_envp, - char *buffer, int buffer_size) +static int pcmcia_bus_uevent(struct device *dev, struct kobj_uevent_env *env) { struct pcmcia_device *p_dev; - int i, length = 0; + int i; u32 hash[4] = { 0, 0, 0, 0}; if (!dev) @@ -1083,23 +1082,13 @@ static int pcmcia_bus_uevent(struct device *dev, char **envp, int num_envp, hash[i] = crc32(0, p_dev->prod_id[i], strlen(p_dev->prod_id[i])); } - i = 0; - - if (add_uevent_var(envp, num_envp, &i, - buffer, buffer_size, &length, - "SOCKET_NO=%u", - p_dev->socket->sock)) + if (add_uevent_var(env, "SOCKET_NO=%u", p_dev->socket->sock)) return -ENOMEM; - if (add_uevent_var(envp, num_envp, &i, - buffer, buffer_size, &length, - "DEVICE_NO=%02X", - p_dev->device_no)) + if (add_uevent_var(env, "DEVICE_NO=%02X", p_dev->device_no)) return -ENOMEM; - if (add_uevent_var(envp, num_envp, &i, - buffer, buffer_size, &length, - "MODALIAS=pcmcia:m%04Xc%04Xf%02Xfn%02Xpfn%02X" + if (add_uevent_var(env, "MODALIAS=pcmcia:m%04Xc%04Xf%02Xfn%02Xpfn%02X" "pa%08Xpb%08Xpc%08Xpd%08X", p_dev->has_manf_id ? p_dev->manf_id : 0, p_dev->has_card_id ? p_dev->card_id : 0, @@ -1112,15 +1101,12 @@ static int pcmcia_bus_uevent(struct device *dev, char **envp, int num_envp, hash[3])) return -ENOMEM; - envp[i] = NULL; - return 0; } #else -static int pcmcia_bus_uevent(struct device *dev, char **envp, int num_envp, - char *buffer, int buffer_size) +static int pcmcia_bus_uevent(struct device *dev, struct kobj_uevent_env *env) { return -ENODEV; } diff --git a/drivers/power/power_supply.h b/drivers/power/power_supply.h index a9880d4..f38ba48 100644 --- a/drivers/power/power_supply.h +++ b/drivers/power/power_supply.h @@ -14,8 +14,7 @@ extern int power_supply_create_attrs(struct power_supply *psy); extern void power_supply_remove_attrs(struct power_supply *psy); -extern int power_supply_uevent(struct device *dev, char **envp, int num_envp, - char *buffer, int buffer_size); +extern int power_supply_uevent(struct device *dev, struct kobj_uevent_env *env); #else diff --git a/drivers/power/power_supply_sysfs.c b/drivers/power/power_supply_sysfs.c index de3155b..249f61b 100644 --- a/drivers/power/power_supply_sysfs.c +++ b/drivers/power/power_supply_sysfs.c @@ -195,11 +195,10 @@ static char *kstruprdup(const char *str, gfp_t gfp) return ret; } -int power_supply_uevent(struct device *dev, char **envp, int num_envp, - char *buffer, int buffer_size) +int power_supply_uevent(struct device *dev, struct kobj_uevent_env *env) { struct power_supply *psy = dev_get_drvdata(dev); - int i = 0, length = 0, ret = 0, j; + int ret = 0, j; char *prop_buf; char *attrname; @@ -212,8 +211,7 @@ int power_supply_uevent(struct device *dev, char **envp, int num_envp, dev_dbg(dev, "POWER_SUPPLY_NAME=%s\n", psy->name); - ret = add_uevent_var(envp, num_envp, &i, buffer, buffer_size, - &length, "POWER_SUPPLY_NAME=%s", psy->name); + ret = add_uevent_var(env, "POWER_SUPPLY_NAME=%s", psy->name); if (ret) return ret; @@ -243,9 +241,7 @@ int power_supply_uevent(struct device *dev, char **envp, int num_envp, dev_dbg(dev, "Static prop %s=%s\n", attrname, prop_buf); - ret = add_uevent_var(envp, num_envp, &i, buffer, buffer_size, - &length, "POWER_SUPPLY_%s=%s", - attrname, prop_buf); + ret = add_uevent_var(env, "POWER_SUPPLY_%s=%s", attrname, prop_buf); kfree(attrname); if (ret) goto out; @@ -282,14 +278,11 @@ int power_supply_uevent(struct device *dev, char **envp, int num_envp, dev_dbg(dev, "prop %s=%s\n", attrname, prop_buf); - ret = add_uevent_var(envp, num_envp, &i, buffer, buffer_size, - &length, "POWER_SUPPLY_%s=%s", - attrname, prop_buf); + ret = add_uevent_var(env, "POWER_SUPPLY_%s=%s", attrname, prop_buf); kfree(attrname); if (ret) goto out; } - envp[i] = NULL; out: free_page((unsigned long)prop_buf); diff --git a/drivers/s390/cio/ccwgroup.c b/drivers/s390/cio/ccwgroup.c index b0a18f5..5d967c4 100644 --- a/drivers/s390/cio/ccwgroup.c +++ b/drivers/s390/cio/ccwgroup.c @@ -44,8 +44,7 @@ ccwgroup_bus_match (struct device * dev, struct device_driver * drv) return 0; } static int -ccwgroup_uevent (struct device *dev, char **envp, int num_envp, char *buffer, - int buffer_size) +ccwgroup_uevent (struct device *dev, struct kobj_uevent_env *env) { /* TODO */ return 0; diff --git a/drivers/s390/cio/device.c b/drivers/s390/cio/device.c index e44d92e..606bb53 100644 --- a/drivers/s390/cio/device.c +++ b/drivers/s390/cio/device.c @@ -78,49 +78,38 @@ static int snprint_alias(char *buf, size_t size, /* Set up environment variables for ccw device uevent. Return 0 on success, * non-zero otherwise. */ -static int ccw_uevent(struct device *dev, char **envp, int num_envp, - char *buffer, int buffer_size) +static int ccw_uevent(struct device *dev, struct kobj_uevent_env *env) { struct ccw_device *cdev = to_ccwdev(dev); struct ccw_device_id *id = &(cdev->id); - int i = 0; - int len = 0; int ret; char modalias_buf[30]; /* CU_TYPE= */ - ret = add_uevent_var(envp, num_envp, &i, buffer, buffer_size, &len, - "CU_TYPE=%04X", id->cu_type); + ret = add_uevent_var(env, "CU_TYPE=%04X", id->cu_type); if (ret) return ret; /* CU_MODEL= */ - ret = add_uevent_var(envp, num_envp, &i, buffer, buffer_size, &len, - "CU_MODEL=%02X", id->cu_model); + ret = add_uevent_var(env, "CU_MODEL=%02X", id->cu_model); if (ret) return ret; /* The next two can be zero, that's ok for us */ /* DEV_TYPE= */ - ret = add_uevent_var(envp, num_envp, &i, buffer, buffer_size, &len, - "DEV_TYPE=%04X", id->dev_type); + ret = add_uevent_var(env, "DEV_TYPE=%04X", id->dev_type); if (ret) return ret; /* DEV_MODEL= */ - ret = add_uevent_var(envp, num_envp, &i, buffer, buffer_size, &len, - "DEV_MODEL=%02X", id->dev_model); + ret = add_uevent_var(env, "DEV_MODEL=%02X", id->dev_model); if (ret) return ret; /* MODALIAS= */ snprint_alias(modalias_buf, sizeof(modalias_buf), id, ""); - ret = add_uevent_var(envp, num_envp, &i, buffer, buffer_size, &len, - "MODALIAS=%s", modalias_buf); - if (ret) - return ret; - envp[i] = NULL; - return 0; + ret = add_uevent_var(env, "MODALIAS=%s", modalias_buf); + return ret; } struct bus_type ccw_bus_type; diff --git a/drivers/s390/crypto/ap_bus.c b/drivers/s390/crypto/ap_bus.c index 90bd220..e997130 100644 --- a/drivers/s390/crypto/ap_bus.c +++ b/drivers/s390/crypto/ap_bus.c @@ -458,28 +458,22 @@ static int ap_bus_match(struct device *dev, struct device_driver *drv) * uevent function for AP devices. It sets up a single environment * variable DEV_TYPE which contains the hardware device type. */ -static int ap_uevent (struct device *dev, char **envp, int num_envp, - char *buffer, int buffer_size) +static int ap_uevent (struct device *dev, struct kobj_uevent_env *env) { struct ap_device *ap_dev = to_ap_dev(dev); - int retval = 0, length = 0, i = 0; + int retval = 0; if (!ap_dev) return -ENODEV; /* Set up DEV_TYPE environment variable. */ - retval = add_uevent_var(envp, num_envp, &i, - buffer, buffer_size, &length, - "DEV_TYPE=%04X", ap_dev->device_type); + retval = add_uevent_var(env, "DEV_TYPE=%04X", ap_dev->device_type); if (retval) return retval; /* Add MODALIAS= */ - retval = add_uevent_var(envp, num_envp, &i, - buffer, buffer_size, &length, - "MODALIAS=ap:t%02X", ap_dev->device_type); + retval = add_uevent_var(env, "MODALIAS=ap:t%02X", ap_dev->device_type); - envp[i] = NULL; return retval; } diff --git a/drivers/scsi/scsi_sysfs.c b/drivers/scsi/scsi_sysfs.c index 34cdce6..ede9986 100644 --- a/drivers/scsi/scsi_sysfs.c +++ b/drivers/scsi/scsi_sysfs.c @@ -277,16 +277,11 @@ static int scsi_bus_match(struct device *dev, struct device_driver *gendrv) return (sdp->inq_periph_qual == SCSI_INQ_PQ_CON)? 1: 0; } -static int scsi_bus_uevent(struct device *dev, char **envp, int num_envp, - char *buffer, int buffer_size) +static int scsi_bus_uevent(struct device *dev, struct kobj_uevent_env *env) { struct scsi_device *sdev = to_scsi_device(dev); - int i = 0; - int length = 0; - add_uevent_var(envp, num_envp, &i, buffer, buffer_size, &length, - "MODALIAS=" SCSI_DEVICE_MODALIAS_FMT, sdev->type); - envp[i] = NULL; + add_uevent_var(env, "MODALIAS=" SCSI_DEVICE_MODALIAS_FMT, sdev->type); return 0; } diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c index e84d215..bcb8dd5 100644 --- a/drivers/spi/spi.c +++ b/drivers/spi/spi.c @@ -67,14 +67,11 @@ static int spi_match_device(struct device *dev, struct device_driver *drv) return strncmp(spi->modalias, drv->name, BUS_ID_SIZE) == 0; } -static int spi_uevent(struct device *dev, char **envp, int num_envp, - char *buffer, int buffer_size) +static int spi_uevent(struct device *dev, struct kobj_uevent_env *env) { const struct spi_device *spi = to_spi_device(dev); - envp[0] = buffer; - snprintf(buffer, buffer_size, "MODALIAS=%s", spi->modalias); - envp[1] = NULL; + add_uevent_var(env, "MODALIAS=%s", spi->modalias); return 0; } diff --git a/drivers/usb/core/driver.c b/drivers/usb/core/driver.c index 63b1243..6273a51 100644 --- a/drivers/usb/core/driver.c +++ b/drivers/usb/core/driver.c @@ -576,12 +576,9 @@ static int usb_device_match(struct device *dev, struct device_driver *drv) } #ifdef CONFIG_HOTPLUG -static int usb_uevent(struct device *dev, char **envp, int num_envp, - char *buffer, int buffer_size) +static int usb_uevent(struct device *dev, struct kobj_uevent_env *env) { struct usb_device *usb_dev; - int i = 0; - int length = 0; if (!dev) return -ENODEV; @@ -610,51 +607,39 @@ static int usb_uevent(struct device *dev, char **envp, int num_envp, * all the device descriptors we don't tell them about. Or * act as usermode drivers. */ - if (add_uevent_var(envp, num_envp, &i, - buffer, buffer_size, &length, - "DEVICE=/proc/bus/usb/%03d/%03d", + if (add_uevent_var(env, "DEVICE=/proc/bus/usb/%03d/%03d", usb_dev->bus->busnum, usb_dev->devnum)) return -ENOMEM; #endif /* per-device configurations are common */ - if (add_uevent_var(envp, num_envp, &i, - buffer, buffer_size, &length, - "PRODUCT=%x/%x/%x", + if (add_uevent_var(env, "PRODUCT=%x/%x/%x", le16_to_cpu(usb_dev->descriptor.idVendor), le16_to_cpu(usb_dev->descriptor.idProduct), le16_to_cpu(usb_dev->descriptor.bcdDevice))) return -ENOMEM; /* class-based driver binding models */ - if (add_uevent_var(envp, num_envp, &i, - buffer, buffer_size, &length, - "TYPE=%d/%d/%d", + if (add_uevent_var(env, "TYPE=%d/%d/%d", usb_dev->descriptor.bDeviceClass, usb_dev->descriptor.bDeviceSubClass, usb_dev->descriptor.bDeviceProtocol)) return -ENOMEM; - if (add_uevent_var(envp, num_envp, &i, - buffer, buffer_size, &length, - "BUSNUM=%03d", + if (add_uevent_var(env, "BUSNUM=%03d", usb_dev->bus->busnum)) return -ENOMEM; - if (add_uevent_var(envp, num_envp, &i, - buffer, buffer_size, &length, - "DEVNUM=%03d", + if (add_uevent_var(env, "DEVNUM=%03d", usb_dev->devnum)) return -ENOMEM; - envp[i] = NULL; return 0; } #else -static int usb_uevent(struct device *dev, char **envp, - int num_envp, char *buffer, int buffer_size) +static int usb_uevent(struct device *dev, struct kobj_uevent_env *env) { return -ENODEV; } diff --git a/drivers/usb/core/message.c b/drivers/usb/core/message.c index d8f7b08..95a49d8 100644 --- a/drivers/usb/core/message.c +++ b/drivers/usb/core/message.c @@ -1339,14 +1339,11 @@ void usb_release_interface(struct device *dev) } #ifdef CONFIG_HOTPLUG -static int usb_if_uevent(struct device *dev, char **envp, int num_envp, - char *buffer, int buffer_size) +static int usb_if_uevent(struct device *dev, struct kobj_uevent_env *env) { struct usb_device *usb_dev; struct usb_interface *intf; struct usb_host_interface *alt; - int i = 0; - int length = 0; if (!dev) return -ENODEV; @@ -1359,39 +1356,30 @@ static int usb_if_uevent(struct device *dev, char **envp, int num_envp, alt = intf->cur_altsetting; #ifdef CONFIG_USB_DEVICEFS - if (add_uevent_var(envp, num_envp, &i, - buffer, buffer_size, &length, - "DEVICE=/proc/bus/usb/%03d/%03d", + if (add_uevent_var(env, "DEVICE=/proc/bus/usb/%03d/%03d", usb_dev->bus->busnum, usb_dev->devnum)) return -ENOMEM; #endif - if (add_uevent_var(envp, num_envp, &i, - buffer, buffer_size, &length, - "PRODUCT=%x/%x/%x", + if (add_uevent_var(env, "PRODUCT=%x/%x/%x", le16_to_cpu(usb_dev->descriptor.idVendor), le16_to_cpu(usb_dev->descriptor.idProduct), le16_to_cpu(usb_dev->descriptor.bcdDevice))) return -ENOMEM; - if (add_uevent_var(envp, num_envp, &i, - buffer, buffer_size, &length, - "TYPE=%d/%d/%d", + if (add_uevent_var(env, "TYPE=%d/%d/%d", usb_dev->descriptor.bDeviceClass, usb_dev->descriptor.bDeviceSubClass, usb_dev->descriptor.bDeviceProtocol)) return -ENOMEM; - if (add_uevent_var(envp, num_envp, &i, - buffer, buffer_size, &length, - "INTERFACE=%d/%d/%d", + if (add_uevent_var(env, "INTERFACE=%d/%d/%d", alt->desc.bInterfaceClass, alt->desc.bInterfaceSubClass, alt->desc.bInterfaceProtocol)) return -ENOMEM; - if (add_uevent_var(envp, num_envp, &i, - buffer, buffer_size, &length, + if (add_uevent_var(env, "MODALIAS=usb:v%04Xp%04Xd%04Xdc%02Xdsc%02Xdp%02Xic%02Xisc%02Xip%02X", le16_to_cpu(usb_dev->descriptor.idVendor), le16_to_cpu(usb_dev->descriptor.idProduct), @@ -1404,14 +1392,12 @@ static int usb_if_uevent(struct device *dev, char **envp, int num_envp, alt->desc.bInterfaceProtocol)) return -ENOMEM; - envp[i] = NULL; return 0; } #else -static int usb_if_uevent(struct device *dev, char **envp, - int num_envp, char *buffer, int buffer_size) +static int usb_if_uevent(struct device *dev, struct kobj_uevent_env *env) { return -ENODEV; } diff --git a/drivers/w1/w1.c b/drivers/w1/w1.c index a593f90..0702173 100644 --- a/drivers/w1/w1.c +++ b/drivers/w1/w1.c @@ -197,7 +197,7 @@ static struct w1_family w1_default_family = { .fops = &w1_default_fops, }; -static int w1_uevent(struct device *dev, char **envp, int num_envp, char *buffer, int buffer_size); +static int w1_uevent(struct device *dev, struct kobj_uevent_env *env); static struct bus_type w1_bus_type = { .name = "w1", @@ -396,13 +396,12 @@ static void w1_destroy_master_attributes(struct w1_master *master) } #ifdef CONFIG_HOTPLUG -static int w1_uevent(struct device *dev, char **envp, int num_envp, - char *buffer, int buffer_size) +static int w1_uevent(struct device *dev, struct kobj_uevent_env *env) { struct w1_master *md = NULL; struct w1_slave *sl = NULL; char *event_owner, *name; - int err, cur_index=0, cur_len=0; + int err; if (dev->driver == &w1_master_driver) { md = container_of(dev, struct w1_master, dev); @@ -423,23 +422,19 @@ static int w1_uevent(struct device *dev, char **envp, int num_envp, if (dev->driver != &w1_slave_driver || !sl) return 0; - err = add_uevent_var(envp, num_envp, &cur_index, buffer, buffer_size, - &cur_len, "W1_FID=%02X", sl->reg_num.family); + err = add_uevent_var(env, "W1_FID=%02X", sl->reg_num.family); if (err) return err; - err = add_uevent_var(envp, num_envp, &cur_index, buffer, buffer_size, - &cur_len, "W1_SLAVE_ID=%024LX", - (unsigned long long)sl->reg_num.id); - envp[cur_index] = NULL; + err = add_uevent_var(env, "W1_SLAVE_ID=%024LX", + (unsigned long long)sl->reg_num.id); if (err) return err; return 0; }; #else -static int w1_uevent(struct device *dev, char **envp, int num_envp, - char *buffer, int buffer_size) +static int w1_uevent(struct device *dev, struct kobj_uevent_env *env) { return 0; } diff --git a/include/asm-powerpc/of_device.h b/include/asm-powerpc/of_device.h index ec2a8a2..93262f2 100644 --- a/include/asm-powerpc/of_device.h +++ b/include/asm-powerpc/of_device.h @@ -20,7 +20,7 @@ struct of_device extern ssize_t of_device_get_modalias(struct of_device *ofdev, char *str, ssize_t len); extern int of_device_uevent(struct device *dev, - char **envp, int num_envp, char *buffer, int buffer_size); + struct kobj_uevent_env *env); /* This is just here during the transition */ #include <linux/of_device.h> diff --git a/include/linux/device.h b/include/linux/device.h index 5d97ca6..2e15822 100644 --- a/include/linux/device.h +++ b/include/linux/device.h @@ -66,8 +66,7 @@ struct bus_type { struct driver_attribute * drv_attrs; int (*match)(struct device * dev, struct device_driver * drv); - int (*uevent)(struct device *dev, char **envp, - int num_envp, char *buffer, int buffer_size); + int (*uevent)(struct device *dev, struct kobj_uevent_env *env); int (*probe)(struct device * dev); int (*remove)(struct device * dev); void (*shutdown)(struct device * dev); @@ -187,10 +186,8 @@ struct class { struct class_device_attribute * class_dev_attrs; struct device_attribute * dev_attrs; - int (*uevent)(struct class_device *dev, char **envp, - int num_envp, char *buffer, int buffer_size); - int (*dev_uevent)(struct device *dev, char **envp, int num_envp, - char *buffer, int buffer_size); + int (*uevent)(struct class_device *dev, struct kobj_uevent_env *env); + int (*dev_uevent)(struct device *dev, struct kobj_uevent_env *env); void (*release)(struct class_device *dev); void (*class_release)(struct class *class); @@ -266,8 +263,7 @@ struct class_device { struct attribute_group ** groups; /* optional groups */ void (*release)(struct class_device *dev); - int (*uevent)(struct class_device *dev, char **envp, - int num_envp, char *buffer, int buffer_size); + int (*uevent)(struct class_device *dev, struct kobj_uevent_env *env); char class_id[BUS_ID_SIZE]; /* unique to this class */ }; @@ -335,8 +331,7 @@ extern void class_device_destroy(struct class *cls, dev_t devt); struct device_type { const char *name; struct attribute_group **groups; - int (*uevent)(struct device *dev, char **envp, int num_envp, - char *buffer, int buffer_size); + int (*uevent)(struct device *dev, struct kobj_uevent_env *env); void (*release)(struct device *dev); int (*suspend)(struct device * dev, pm_message_t state); int (*resume)(struct device * dev); diff --git a/include/linux/kobject.h b/include/linux/kobject.h index 949706c..626bdd3 100644 --- a/include/linux/kobject.h +++ b/include/linux/kobject.h @@ -29,6 +29,8 @@ #define KOBJ_NAME_LEN 20 #define UEVENT_HELPER_PATH_LEN 256 +#define UEVENT_NUM_ENVP 32 /* number of env pointers */ +#define UEVENT_BUFFER_SIZE 2048 /* buffer for the variables */ /* path to the userspace helper executed on an event */ extern char uevent_helper[]; @@ -111,11 +113,18 @@ struct kobj_type { struct attribute ** default_attrs; }; +struct kobj_uevent_env { + char *envp[UEVENT_NUM_ENVP]; + int envp_idx; + char buf[UEVENT_BUFFER_SIZE]; + int buflen; +}; + struct kset_uevent_ops { int (*filter)(struct kset *kset, struct kobject *kobj); const char *(*name)(struct kset *kset, struct kobject *kobj); - int (*uevent)(struct kset *kset, struct kobject *kobj, char **envp, - int num_envp, char *buffer, int buffer_size); + int (*uevent)(struct kset *kset, struct kobject *kobj, + struct kobj_uevent_env *env); }; /* @@ -275,10 +284,8 @@ int kobject_uevent(struct kobject *kobj, enum kobject_action action); int kobject_uevent_env(struct kobject *kobj, enum kobject_action action, char *envp[]); -int add_uevent_var(char **envp, int num_envp, int *cur_index, - char *buffer, int buffer_size, int *cur_len, - const char *format, ...) - __attribute__((format (printf, 7, 8))); +int add_uevent_var(struct kobj_uevent_env *env, const char *format, ...) + __attribute__((format (printf, 2, 3))); #else static inline int kobject_uevent(struct kobject *kobj, enum kobject_action action) { return 0; } @@ -287,9 +294,7 @@ static inline int kobject_uevent_env(struct kobject *kobj, char *envp[]) { return 0; } -static inline int add_uevent_var(char **envp, int num_envp, int *cur_index, - char *buffer, int buffer_size, int *cur_len, - const char *format, ...) +static inline int add_uevent_var(struct kobj_uevent_env *env, const char *format, ...) { return 0; } #endif diff --git a/lib/kobject_uevent.c b/lib/kobject_uevent.c index e06a8dc..7d8aeb3 100644 --- a/lib/kobject_uevent.c +++ b/lib/kobject_uevent.c @@ -22,8 +22,6 @@ #include <linux/kobject.h> #include <net/sock.h> -#define BUFFER_SIZE 2048 /* buffer for the variables */ -#define NUM_ENVP 32 /* number of env pointers */ /* the strings here must match the enum in include/linux/kobject.h */ const char *kobject_actions[] = { @@ -54,31 +52,21 @@ static struct sock *uevent_sock; * corresponding error when it fails. */ int kobject_uevent_env(struct kobject *kobj, enum kobject_action action, - char *envp_ext[]) + char *envp_ext[]) { - char **envp; - char *buffer; - char *scratch; - const char *action_string; + struct kobj_uevent_env *env; + const char *action_string = kobject_actions[action]; const char *devpath = NULL; const char *subsystem; struct kobject *top_kobj; struct kset *kset; struct kset_uevent_ops *uevent_ops; u64 seq; - char *seq_buff; int i = 0; int retval = 0; - int j; pr_debug("%s\n", __FUNCTION__); - action_string = kobject_actions[action]; - if (!action_string) { - pr_debug("kobject attempted to send uevent without action_string!\n"); - return -EINVAL; - } - /* search the kset we belong to */ top_kobj = kobj; while (!top_kobj->kset && top_kobj->parent) { @@ -92,7 +80,7 @@ int kobject_uevent_env(struct kobject *kobj, enum kobject_action action, kset = top_kobj->kset; uevent_ops = kset->uevent_ops; - /* skip the event, if the filter returns zero. */ + /* skip the event, if the filter returns zero. */ if (uevent_ops && uevent_ops->filter) if (!uevent_ops->filter(kset, kobj)) { pr_debug("kobject filter function caused the event to drop!\n"); @@ -109,18 +97,11 @@ int kobject_uevent_env(struct kobject *kobj, enum kobject_action action, return 0; } - /* environment index */ - envp = kzalloc(NUM_ENVP * sizeof (char *), GFP_KERNEL); - if (!envp) + /* environment buffer */ + env = kzalloc(sizeof(struct kobj_uevent_env), GFP_KERNEL); + if (!env) return -ENOMEM; - /* environment values */ - buffer = kmalloc(BUFFER_SIZE, GFP_KERNEL); - if (!buffer) { - retval = -ENOMEM; - goto exit; - } - /* complete object path */ devpath = kobject_get_path(kobj, GFP_KERNEL); if (!devpath) { @@ -128,29 +109,29 @@ int kobject_uevent_env(struct kobject *kobj, enum kobject_action action, goto exit; } - /* event environemnt for helper process only */ - envp[i++] = "HOME=/"; - envp[i++] = "PATH=/sbin:/bin:/usr/sbin:/usr/bin"; - /* default keys */ - scratch = buffer; - envp [i++] = scratch; - scratch += sprintf(scratch, "ACTION=%s", action_string) + 1; - envp [i++] = scratch; - scratch += sprintf (scratch, "DEVPATH=%s", devpath) + 1; - envp [i++] = scratch; - scratch += sprintf(scratch, "SUBSYSTEM=%s", subsystem) + 1; - for (j = 0; envp_ext && envp_ext[j]; j++) - envp[i++] = envp_ext[j]; - /* just reserve the space, overwrite it after kset call has returned */ - envp[i++] = seq_buff = scratch; - scratch += strlen("SEQNUM=18446744073709551616") + 1; + retval = add_uevent_var(env, "ACTION=%s", action_string); + if (retval) + goto exit; + retval = add_uevent_var(env, "DEVPATH=%s", devpath); + if (retval) + goto exit; + retval = add_uevent_var(env, "SUBSYSTEM=%s", subsystem); + if (retval) + goto exit; + + /* keys passed in from the caller */ + if (envp_ext) { + for (i = 0; envp_ext[i]; i++) { + retval = add_uevent_var(env, envp_ext[i]); + if (retval) + goto exit; + } + } /* let the kset specific function add its stuff */ if (uevent_ops && uevent_ops->uevent) { - retval = uevent_ops->uevent(kset, kobj, - &envp[i], NUM_ENVP - i, scratch, - BUFFER_SIZE - (scratch - buffer)); + retval = uevent_ops->uevent(kset, kobj, env); if (retval) { pr_debug ("%s - uevent() returned %d\n", __FUNCTION__, retval); @@ -158,11 +139,13 @@ int kobject_uevent_env(struct kobject *kobj, enum kobject_action action, } } - /* we will send an event, request a new sequence number */ + /* we will send an event, so request a new sequence number */ spin_lock(&sequence_lock); seq = ++uevent_seqnum; spin_unlock(&sequence_lock); - sprintf(seq_buff, "SEQNUM=%llu", (unsigned long long)seq); + retval = add_uevent_var(env, "SEQNUM=%llu", (unsigned long long)seq); + if (retval) + goto exit; #if defined(CONFIG_NET) /* send netlink message */ @@ -172,17 +155,19 @@ int kobject_uevent_env(struct kobject *kobj, enum kobject_action action, /* allocate message with the maximum possible size */ len = strlen(action_string) + strlen(devpath) + 2; - skb = alloc_skb(len + BUFFER_SIZE, GFP_KERNEL); + skb = alloc_skb(len + env->buflen, GFP_KERNEL); if (skb) { + char *scratch; + /* add header */ scratch = skb_put(skb, len); sprintf(scratch, "%s@%s", action_string, devpath); /* copy keys to our continuous event payload buffer */ - for (i = 2; envp[i]; i++) { - len = strlen(envp[i]) + 1; + for (i = 0; i < env->envp_idx; i++) { + len = strlen(env->envp[i]) + 1; scratch = skb_put(skb, len); - strcpy(scratch, envp[i]); + strcpy(scratch, env->envp[i]); } NETLINK_CB(skb).dst_group = 1; @@ -198,13 +183,19 @@ int kobject_uevent_env(struct kobject *kobj, enum kobject_action action, argv [0] = uevent_helper; argv [1] = (char *)subsystem; argv [2] = NULL; - call_usermodehelper (argv[0], argv, envp, UMH_WAIT_EXEC); + retval = add_uevent_var(env, "HOME=/"); + if (retval) + goto exit; + retval = add_uevent_var(env, "PATH=/sbin:/bin:/usr/sbin:/usr/bin"); + if (retval) + goto exit; + + call_usermodehelper (argv[0], argv, env->envp, UMH_WAIT_EXEC); } exit: kfree(devpath); - kfree(buffer); - kfree(envp); + kfree(env); return retval; } @@ -227,52 +218,38 @@ int kobject_uevent(struct kobject *kobj, enum kobject_action action) EXPORT_SYMBOL_GPL(kobject_uevent); /** - * add_uevent_var - helper for creating event variables - * @envp: Pointer to table of environment variables, as passed into - * uevent() method. - * @num_envp: Number of environment variable slots available, as - * passed into uevent() method. - * @cur_index: Pointer to current index into @envp. It should be - * initialized to 0 before the first call to add_uevent_var(), - * and will be incremented on success. - * @buffer: Pointer to buffer for environment variables, as passed - * into uevent() method. - * @buffer_size: Length of @buffer, as passed into uevent() method. - * @cur_len: Pointer to current length of space used in @buffer. - * Should be initialized to 0 before the first call to - * add_uevent_var(), and will be incremented on success. - * @format: Format for creating environment variable (of the form - * "XXX=%x") for snprintf(). + * add_uevent_var - add key value string to the environment buffer + * @env: environment buffer structure + * @format: printf format for the key=value pair * * Returns 0 if environment variable was added successfully or -ENOMEM * if no space was available. */ -int add_uevent_var(char **envp, int num_envp, int *cur_index, - char *buffer, int buffer_size, int *cur_len, - const char *format, ...) +int add_uevent_var(struct kobj_uevent_env *env, const char *format, ...) { va_list args; + int len; - /* - * We check against num_envp - 1 to make sure there is at - * least one slot left after we return, since kobject_uevent() - * needs to set the last slot to NULL. - */ - if (*cur_index >= num_envp - 1) + if (env->envp_idx >= ARRAY_SIZE(env->envp)) { + printk(KERN_ERR "add_uevent_var: too many keys\n"); + WARN_ON(1); return -ENOMEM; - - envp[*cur_index] = buffer + *cur_len; + } va_start(args, format); - *cur_len += vsnprintf(envp[*cur_index], - max(buffer_size - *cur_len, 0), - format, args) + 1; + len = vsnprintf(&env->buf[env->buflen], + sizeof(env->buf) - env->buflen, + format, args); va_end(args); - if (*cur_len > buffer_size) + if (len >= (sizeof(env->buf) - env->buflen)) { + printk(KERN_ERR "add_uevent_var: buffer size too small\n"); + WARN_ON(1); return -ENOMEM; + } - (*cur_index)++; + env->envp[env->envp_idx++] = &env->buf[env->buflen]; + env->buflen += len + 1; return 0; } EXPORT_SYMBOL_GPL(add_uevent_var); diff --git a/net/atm/atm_sysfs.c b/net/atm/atm_sysfs.c index f094a08..9ef07ed 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 909a03d..6628e45 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 2d5d225..29f820e 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; diff --git a/sound/aoa/soundbus/core.c b/sound/aoa/soundbus/core.c index 64d1639..f84f3e5 100644 --- a/sound/aoa/soundbus/core.c +++ b/sound/aoa/soundbus/core.c @@ -56,13 +56,12 @@ static int soundbus_probe(struct device *dev) } -static int soundbus_uevent(struct device *dev, char **envp, int num_envp, - char *buffer, int buffer_size) +static int soundbus_uevent(struct device *dev, struct kobj_uevent_env *env) { struct soundbus_dev * soundbus_dev; struct of_device * of; const char *compat; - int retval = 0, i = 0, length = 0; + int retval = 0; int cplen, seen = 0; if (!dev) @@ -75,15 +74,11 @@ static int soundbus_uevent(struct device *dev, char **envp, int num_envp, of = &soundbus_dev->ofdev; /* stuff we want to pass to /sbin/hotplug */ - retval = add_uevent_var(envp, num_envp, &i, - buffer, buffer_size, &length, - "OF_NAME=%s", of->node->name); + retval = add_uevent_var(env, "OF_NAME=%s", of->node->name); if (retval) return retval; - retval = add_uevent_var(envp, num_envp, &i, - buffer, buffer_size, &length, - "OF_TYPE=%s", of->node->type); + retval = add_uevent_var(env, "OF_TYPE=%s", of->node->type); if (retval) return retval; @@ -93,27 +88,19 @@ static int soundbus_uevent(struct device *dev, char **envp, int num_envp, compat = of_get_property(of->node, "compatible", &cplen); while (compat && cplen > 0) { - int tmp = length; - retval = add_uevent_var(envp, num_envp, &i, - buffer, buffer_size, &length, - "OF_COMPATIBLE_%d=%s", seen, compat); + int tmp = env->buflen; + retval = add_uevent_var(env, "OF_COMPATIBLE_%d=%s", seen, compat); if (retval) return retval; - compat += length - tmp; - cplen -= length - tmp; + compat += env->buflen - tmp; + cplen -= env->buflen - tmp; seen += 1; } - retval = add_uevent_var(envp, num_envp, &i, - buffer, buffer_size, &length, - "OF_COMPATIBLE_N=%d", seen); + retval = add_uevent_var(env, "OF_COMPATIBLE_N=%d", seen); if (retval) return retval; - retval = add_uevent_var(envp, num_envp, &i, - buffer, buffer_size, &length, - "MODALIAS=%s", soundbus_dev->modalias); - - envp[i] = NULL; + retval = add_uevent_var(env, "MODALIAS=%s", soundbus_dev->modalias); return retval; } |
