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lib/sysfs: add sysfs_blkdev_get_parent() 

Signed-off-by: Karel Zak <kzak@redhat.com>
This commit is contained in:
Karel Zak 2018-05-16 13:20:01 +02:00
parent 866ac74f97
commit 8c3d9cad1e
2 changed files with 8 additions and 0 deletions
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2
include/sysfs.h
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@ -68,7 +68,9 @@ void ul_sysfs_init_debug(void);
struct path_cxt *ul_new_sysfs_path(dev_t devno, struct path_cxt *parent, const char *prefix);
int sysfs_blkdev_init_path(struct path_cxt *pc, dev_t devno, struct path_cxt *parent);
int sysfs_blkdev_set_parent(struct path_cxt *pc, struct path_cxt *parent);
struct path_cxt *sysfs_blkdev_get_parent(struct path_cxt *pc);
char *sysfs_blkdev_get_name(struct path_cxt *pc, char *buf, size_t bufsiz);
int sysfs_blkdev_is_partition_dirent(DIR *dir, struct dirent *d, const char *parent_name);

6
lib/sysfs.c
View File

@ -148,6 +148,12 @@ int sysfs_blkdev_set_parent(struct path_cxt *pc, struct path_cxt *parent)
return 0;
}
struct path_cxt *sysfs_blkdev_get_parent(struct path_cxt *pc)
{
struct sysfs_blkdev *blk = ul_path_get_dialect(pc);
return blk ? blk->parent : NULL;
}
/*
* Redirects ENOENT errors to the parent, if the path is to the queue/
* sysfs directory. For example