X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=fs%2Fpartitions%2Fcheck.c;h=7ef1f094de911998a88fe76bda393f136d60ec3c;hb=43bc926fffd92024b46cafaf7350d669ba9ca884;hp=2cab98a9a621ce12a2f402688acb976b6a5ef9e8;hpb=cee37fe97739d85991964371c1f3a745c00dd236;p=linux-2.6.git diff --git a/fs/partitions/check.c b/fs/partitions/check.c index 2cab98a9a..7ef1f094d 100644 --- a/fs/partitions/check.c +++ b/fs/partitions/check.c @@ -35,6 +35,7 @@ #include "ibm.h" #include "ultrix.h" #include "efi.h" +#include "karma.h" #ifdef CONFIG_BLK_DEV_MD extern void md_autodetect_dev(dev_t dev); @@ -79,9 +80,6 @@ static int (*check_part[])(struct parsed_partitions *, struct block_device *) = #ifdef CONFIG_LDM_PARTITION ldm_partition, /* this must come before msdos */ #endif -#ifdef CONFIG_NEC98_PARTITION - nec98_partition, /* must be come before `msdos_partition' */ -#endif #ifdef CONFIG_MSDOS_PARTITION msdos_partition, #endif @@ -105,6 +103,9 @@ static int (*check_part[])(struct parsed_partitions *, struct block_device *) = #endif #ifdef CONFIG_IBM_PARTITION ibm_partition, +#endif +#ifdef CONFIG_KARMA_PARTITION + karma_partition, #endif NULL }; @@ -195,6 +196,7 @@ check_partition(struct gendisk *hd, struct block_device *bdev) struct part_attribute { struct attribute attr; ssize_t (*show)(struct hd_struct *,char *); + ssize_t (*store)(struct hd_struct *,const char *, size_t); }; static ssize_t @@ -204,14 +206,33 @@ part_attr_show(struct kobject * kobj, struct attribute * attr, char * page) struct part_attribute * part_attr = container_of(attr,struct part_attribute,attr); ssize_t ret = 0; if (part_attr->show) - ret = part_attr->show(p,page); + ret = part_attr->show(p, page); + return ret; +} +static ssize_t +part_attr_store(struct kobject * kobj, struct attribute * attr, + const char *page, size_t count) +{ + struct hd_struct * p = container_of(kobj,struct hd_struct,kobj); + struct part_attribute * part_attr = container_of(attr,struct part_attribute,attr); + ssize_t ret = 0; + + if (part_attr->store) + ret = part_attr->store(p, page, count); return ret; } static struct sysfs_ops part_sysfs_ops = { .show = part_attr_show, + .store = part_attr_store, }; +static ssize_t part_uevent_store(struct hd_struct * p, + const char *page, size_t count) +{ + kobject_uevent(&p->kobj, KOBJ_ADD); + return count; +} static ssize_t part_dev_read(struct hd_struct * p, char *page) { struct gendisk *disk = container_of(p->kobj.parent,struct gendisk,kobj); @@ -229,9 +250,13 @@ static ssize_t part_size_read(struct hd_struct * p, char *page) static ssize_t part_stat_read(struct hd_struct * p, char *page) { return sprintf(page, "%8u %8llu %8u %8llu\n", - p->reads, (unsigned long long)p->read_sectors, - p->writes, (unsigned long long)p->write_sectors); + p->ios[0], (unsigned long long)p->sectors[0], + p->ios[1], (unsigned long long)p->sectors[1]); } +static struct part_attribute part_attr_uevent = { + .attr = {.name = "uevent", .mode = S_IWUSR }, + .store = part_uevent_store +}; static struct part_attribute part_attr_dev = { .attr = {.name = "dev", .mode = S_IRUGO }, .show = part_dev_read @@ -250,6 +275,7 @@ static struct part_attribute part_attr_stat = { }; static struct attribute * default_attrs[] = { + &part_attr_uevent.attr, &part_attr_dev.attr, &part_attr_start.attr, &part_attr_size.attr, @@ -271,6 +297,25 @@ struct kobj_type ktype_part = { .sysfs_ops = &part_sysfs_ops, }; +static inline void partition_sysfs_add_subdir(struct hd_struct *p) +{ + struct kobject *k; + + k = kobject_get(&p->kobj); + p->holder_dir = kobject_add_dir(k, "holders"); + kobject_put(k); +} + +static inline void disk_sysfs_add_subdirs(struct gendisk *disk) +{ + struct kobject *k; + + k = kobject_get(&disk->kobj); + disk->holder_dir = kobject_add_dir(k, "holders"); + disk->slave_dir = kobject_add_dir(k, "slaves"); + kobject_put(k); +} + void delete_partition(struct gendisk *disk, int part) { struct hd_struct *p = disk->part[part-1]; @@ -281,9 +326,14 @@ void delete_partition(struct gendisk *disk, int part) disk->part[part-1] = NULL; p->start_sect = 0; p->nr_sects = 0; - p->reads = p->writes = p->read_sectors = p->write_sectors = 0; + p->ios[0] = p->ios[1] = 0; + p->sectors[0] = p->sectors[1] = 0; devfs_remove("%s/part%d", disk->devfs_name, part); - kobject_unregister(&p->kobj); + if (p->holder_dir) + kobject_unregister(p->holder_dir); + kobject_uevent(&p->kobj, KOBJ_REMOVE); + kobject_del(&p->kobj); + kobject_put(&p->kobj); } void add_partition(struct gendisk *disk, int part, sector_t start, sector_t len) @@ -309,16 +359,44 @@ void add_partition(struct gendisk *disk, int part, sector_t start, sector_t len) snprintf(p->kobj.name,KOBJ_NAME_LEN,"%s%d",disk->kobj.name,part); p->kobj.parent = &disk->kobj; p->kobj.ktype = &ktype_part; - kobject_register(&p->kobj); + kobject_init(&p->kobj); + kobject_add(&p->kobj); + if (!disk->part_uevent_suppress) + kobject_uevent(&p->kobj, KOBJ_ADD); + partition_sysfs_add_subdir(p); disk->part[part-1] = p; } +static char *make_block_name(struct gendisk *disk) +{ + char *name; + static char *block_str = "block:"; + int size; + char *s; + + size = strlen(block_str) + strlen(disk->disk_name) + 1; + name = kmalloc(size, GFP_KERNEL); + if (!name) + return NULL; + strcpy(name, block_str); + strcat(name, disk->disk_name); + /* ewww... some of these buggers have / in name... */ + s = strchr(name, '/'); + if (s) + *s = '!'; + return name; +} + static void disk_sysfs_symlinks(struct gendisk *disk) { struct device *target = get_device(disk->driverfs_dev); if (target) { + char *disk_name = make_block_name(disk); sysfs_create_link(&disk->kobj,&target->kobj,"device"); - sysfs_create_link(&target->kobj,&disk->kobj,"block"); + if (disk_name) { + sysfs_create_link(&target->kobj,&disk->kobj,disk_name); + kfree(disk_name); + } } } @@ -327,6 +405,8 @@ void register_disk(struct gendisk *disk) { struct block_device *bdev; char *s; + int i; + struct hd_struct *p; int err; strlcpy(disk->kobj.name,disk->disk_name,KOBJ_NAME_LEN); @@ -337,13 +417,13 @@ void register_disk(struct gendisk *disk) if ((err = kobject_add(&disk->kobj))) return; disk_sysfs_symlinks(disk); - kobject_hotplug(&disk->kobj, KOBJ_ADD); + disk_sysfs_add_subdirs(disk); /* No minors to use for partitions */ if (disk->minors == 1) { if (disk->devfs_name[0] != '\0') devfs_add_disk(disk); - return; + goto exit; } /* always add handle for the whole disk */ @@ -351,16 +431,32 @@ void register_disk(struct gendisk *disk) /* No such device (e.g., media were just removed) */ if (!get_capacity(disk)) - return; + goto exit; bdev = bdget_disk(disk, 0); if (!bdev) - return; + goto exit; + /* scan partition table, but suppress uevents */ bdev->bd_invalidated = 1; - if (blkdev_get(bdev, FMODE_READ, 0) < 0) - return; + disk->part_uevent_suppress = 1; + err = blkdev_get(bdev, FMODE_READ, 0); + disk->part_uevent_suppress = 0; + if (err < 0) + goto exit; blkdev_put(bdev); + +exit: + /* announce disk after possible partitions are already created */ + kobject_uevent(&disk->kobj, KOBJ_ADD); + + /* announce possible partitions */ + for (i = 1; i < disk->minors; i++) { + p = disk->part[i-1]; + if (!p || !p->nr_sects) + continue; + kobject_uevent(&p->kobj, KOBJ_ADD); + } } int rescan_partitions(struct gendisk *disk, struct block_device *bdev) @@ -433,15 +529,24 @@ void del_gendisk(struct gendisk *disk) disk->flags &= ~GENHD_FL_UP; unlink_gendisk(disk); disk_stat_set_all(disk, 0); - disk->stamp = disk->stamp_idle = 0; + disk->stamp = 0; devfs_remove_disk(disk); + kobject_uevent(&disk->kobj, KOBJ_REMOVE); + if (disk->holder_dir) + kobject_unregister(disk->holder_dir); + if (disk->slave_dir) + kobject_unregister(disk->slave_dir); if (disk->driverfs_dev) { + char *disk_name = make_block_name(disk); sysfs_remove_link(&disk->kobj, "device"); - sysfs_remove_link(&disk->driverfs_dev->kobj, "block"); + if (disk_name) { + sysfs_remove_link(&disk->driverfs_dev->kobj, disk_name); + kfree(disk_name); + } put_device(disk->driverfs_dev); + disk->driverfs_dev = NULL; } - kobject_hotplug(&disk->kobj, KOBJ_REMOVE); kobject_del(&disk->kobj); }