5d0e26bb59
Separate out kernfs symlink interface - kernfs_create_link() - which takes and returns sysfs_dirents, from sysfs_do_create_link_sd(). sysfs_do_create_link_sd() now just determines the parent and target sysfs_dirents and invokes the new interface and handles dup warning. This patch doesn't introduce behavior changes. v2: Dummy implementation for !CONFIG_SYSFS updated to return -ENOSYS. Signed-off-by: Tejun Heo <tj@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
46 lines
1.1 KiB
C
46 lines
1.1 KiB
C
/*
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* kernfs.h - pseudo filesystem decoupled from vfs locking
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*
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* This file is released under the GPLv2.
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*/
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#ifndef __LINUX_KERNFS_H
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#define __LINUX_KERNFS_H
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#include <linux/kernel.h>
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#include <linux/err.h>
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struct sysfs_dirent;
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#ifdef CONFIG_SYSFS
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struct sysfs_dirent *kernfs_create_link(struct sysfs_dirent *parent,
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const char *name,
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struct sysfs_dirent *target);
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void kernfs_remove(struct sysfs_dirent *sd);
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int kernfs_remove_by_name_ns(struct sysfs_dirent *parent, const char *name,
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const void *ns);
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#else /* CONFIG_SYSFS */
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static inline struct sysfs_dirent *
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kernfs_create_link(struct sysfs_dirent *parent, const char *name,
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struct sysfs_dirent *target)
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{ return ERR_PTR(-ENOSYS); }
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static inline void kernfs_remove(struct sysfs_dirent *sd) { }
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static inline int kernfs_remove_by_name_ns(struct sysfs_dirent *parent,
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const char *name, const void *ns)
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{ return -ENOSYS; }
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#endif /* CONFIG_SYSFS */
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static inline int kernfs_remove_by_name(struct sysfs_dirent *parent,
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const char *name)
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{
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return kernfs_remove_by_name_ns(parent, name, NULL);
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}
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#endif /* __LINUX_KERNFS_H */
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