Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
doc: correcting the idmapping mount example
In step 2, we obtain the kernel id `k1000`. So in next step (step
3), we should translate the `k1000` not `k21000`.
Signed-off-by: Hongbo Li <lihongbo22@huawei.com>
Link: https://lore.kernel.org/r/20240816063611.1961910-1-lihongbo22@huawei.com
Signed-off-by: Christian Brauner <brauner@kernel.org>
authored by
Hongbo Li
and committed by
Christian Brauner
3717bbcb
1aeb6def
+4
-4
+4
-4
Documentation/filesystems/idmappings.rst
+4
-4
Documentation/filesystems/idmappings.rst
···
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/* Map the userspace id down into a kernel id in the filesystem's idmapping. */
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make_kuid(u0:k20000:r10000, u1000) = k21000
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2. Verify that the caller's kernel ids can be mapped to userspace ids in the
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3. Verify that the caller's kernel ids can be mapped to userspace ids in the
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filesystem's idmapping::
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from_kuid(u0:k20000:r10000, k21000) = u1000
···
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/* Map the userspace id down into a kernel id in the filesystem's idmapping. */
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make_kuid(u0:k0:r4294967295, u1000) = k1000
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2. Verify that the caller's kernel ids can be mapped to userspace ids in the
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3. Verify that the caller's kernel ids can be mapped to userspace ids in the
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filesystem's idmapping::
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from_kuid(u0:k0:r4294967295, k21000) = u1000
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from_kuid(u0:k0:r4294967295, k1000) = u1000
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So the ownership that lands on disk will be ``u1000``.
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···
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/* Map the userspace id down into a kernel id in the filesystem's idmapping. */
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make_kuid(u0:k0:r4294967295, u1000) = k1000
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2. Verify that the caller's filesystem ids can be mapped to userspace ids in the
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3. Verify that the caller's filesystem ids can be mapped to userspace ids in the
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filesystem's idmapping::
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from_kuid(u0:k0:r4294967295, k1000) = u1000