Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
samples/kobject: add is_visible() callback to attribute group
There was no example for the is_visible() callback so far.
It will also become an example and test for the constification of
'struct attribute' later.
Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Link: https://patch.msgid.link/20251029-sysfs-const-attr-prep-v5-5-ea7d745acff4@weissschuh.net
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
authored by
Thomas Weißschuh
and committed by
Greg Kroah-Hartman
c301a2e2
7dd9fdb4
+16
-1
+16
-1
samples/kobject/kset-example.c
+16
-1
samples/kobject/kset-example.c
···
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&bar_attribute.attr,
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NULL, /* need to NULL terminate the list of attributes */
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};
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-
ATTRIBUTE_GROUPS(foo_default);
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static umode_t foo_default_attrs_is_visible(struct kobject *kobj,
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struct attribute *attr,
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int n)
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{
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/* Hide attributes with the same name as the kobject. */
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if (strcmp(kobject_name(kobj), attr->name) == 0)
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return 0;
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return attr->mode;
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}
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static const struct attribute_group foo_default_group = {
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.attrs = foo_default_attrs,
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.is_visible = foo_default_attrs_is_visible,
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};
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__ATTRIBUTE_GROUPS(foo_default);
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/*
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* Our own ktype for our kobjects. Here we specify our sysfs ops, the