- 09 Mar, 2019 7 commits
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J. R. Okajima authored
Now aufs becomes mountable with very few features. Signed-off-by: J. R. Okajima <hooanon05g@gmail.com>
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J. R. Okajima authored
The main part is in previous commit. This commit handles the generation of aufs objects, to make sure the inode in the file handle is still valid. In order not to confuse NFSD, the various operation returns ESTALE for NFSD where it used to return EBUSY. See also the document in this commit. Signed-off-by: J. R. Okajima <hooanon05g@gmail.com>
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J. R. Okajima authored
Several policies to select one among multiple writable branches. See also the document in previous commit. Signed-off-by: J. R. Okajima <hooanon05g@gmail.com>
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J. R. Okajima authored
Aufs can have multiple writable branches, and there are several policies to select one among them. This commit implements default "top-down-parent" for both of creating-policy and copyup-policy. See also the document in this commit. Signed-off-by: J. R. Okajima <hooanon05g@gmail.com>
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J. R. Okajima authored
The branch path can be much longer and it is not suitable to print via /proc/mounts as a part of mount options. Aufs can show it either separately via sysfs or /proc/mounts (as a part of mount options). This approach affects the lifetime of aufs objects and sbinfo contains kobject (in another commit). Theoretically user can disable CONFIG_SYSFS, but the lifetime management is always necessary. So supporting sysfs is split into two files, sysaufs.c and sysfs.c. sysaufs.c is always compiled, but sysfs.c is compiled only when CONFIG_SYSFS is enabled. Signed-off-by: J. R. Okajima <hooanon05g@gmail.com>
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J. R. Okajima authored
The structure is very similar to inode and dentry infos (in previous commits), but the internal array is for 'struct au_branch' instead of 'superblock.' Additionally the lifetime of 'struct au_sbinfo' is managed by kobject since it will be connected to sysfs by later commit. Signed-off-by: J. R. Okajima <hooanon05g@gmail.com>
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J. R. Okajima authored
See the documents in this commit. Signed-off-by: J. R. Okajima <hooanon05g@gmail.com>
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