writer: Fix return value of lcfs_node_unset_xattr #401
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allisonkarlitskaya
requested changes
Dec 2, 2024
Since the first creation of this code in 5ac1f5c "lib: Update xattr APIs" this function has always returned an error code - but nothing checked it, so it didn't matter. Now also, currently this function cannot fail but let's give ourselves some flexibility here; perhaps we want to e.g. invoke `realloc` and in that case we'd need to handle OOM. I just noticed this while working on commit 02077e8 to reject empty xattr names. Change this to return success, and also check its return value in the set path. Signed-off-by: Colin Walters <walters@verbum.org>
Came up in chat, the semantics defined today is last-one-wins. Let's test that. Signed-off-by: Colin Walters <walters@verbum.org>
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I also added a test case for the multiple xattr path. |
Can you be more specific? |
Same as we talked about today. It's wrapped at 50. Not important :) |
allisonkarlitskaya
approved these changes
Dec 9, 2024
| else | ||
| node->xattr_size = 0; // If last xattr, remove the overhead too | ||
| assert(node->xattr_size >= 0); | ||
| if (index < 0) { |
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This way around reads a lot nicer now. Thanks for the change.
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Since the first creation of this code in
5ac1f5c "lib: Update xattr APIs" this function
has always returned an error code - but nothing
checked it, so it didn't matter.
Now also, currently this function cannot fail
but let's give ourselves some flexibility here;
perhaps we want to e.g. invoke
reallocand in that case we'd need to handle OOM.
I just noticed this while working on commit
02077e8
to reject empty xattr names.
Change this to return success, and also check its
return value in the set path.