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https://github.com/freebsd/freebsd-src
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linuxkpi: Move struct kobject code to linux_kobject.c
[Why] `linux_compat.c` is already too long. I will need to add `struct kset` in a follow-up commit, so let's move the existing `struct kobject` code to its own file. Reviewed by: manu Approved by: manu Differential Revision: https://reviews.freebsd.org/D43019
This commit is contained in:
Jean-Sébastien Pédron
parent
4e0d3f7b3c
commit
80446fc7b5
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@ -154,4 +154,6 @@ kobject_uevent_env(struct kobject *kobj, int action, char *envp[])
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*/
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}
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void linux_kobject_kfree_name(struct kobject *kobj);
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#endif /* _LINUXKPI_LINUX_KOBJECT_H_ */
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@ -159,176 +159,6 @@ RB_GENERATE(linux_root, rb_node, __entry, panic_cmp);
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INTERVAL_TREE_DEFINE(struct interval_tree_node, rb, unsigned long,, START,
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LAST,, lkpi_interval_tree)
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struct kobject *
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kobject_create(void)
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{
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struct kobject *kobj;
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kobj = kzalloc(sizeof(*kobj), GFP_KERNEL);
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if (kobj == NULL)
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return (NULL);
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kobject_init(kobj, &linux_kfree_type);
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return (kobj);
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}
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int
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kobject_set_name_vargs(struct kobject *kobj, const char *fmt, va_list args)
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{
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va_list tmp_va;
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int len;
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char *old;
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char *name;
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char dummy;
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old = kobj->name;
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if (old && fmt == NULL)
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return (0);
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/* compute length of string */
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va_copy(tmp_va, args);
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len = vsnprintf(&dummy, 0, fmt, tmp_va);
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va_end(tmp_va);
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/* account for zero termination */
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len++;
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/* check for error */
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if (len < 1)
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return (-EINVAL);
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/* allocate memory for string */
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name = kzalloc(len, GFP_KERNEL);
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if (name == NULL)
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return (-ENOMEM);
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vsnprintf(name, len, fmt, args);
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kobj->name = name;
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/* free old string */
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kfree(old);
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/* filter new string */
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for (; *name != '\0'; name++)
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if (*name == '/')
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*name = '!';
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return (0);
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}
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int
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kobject_set_name(struct kobject *kobj, const char *fmt, ...)
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{
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va_list args;
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int error;
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va_start(args, fmt);
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error = kobject_set_name_vargs(kobj, fmt, args);
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va_end(args);
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return (error);
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}
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static int
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kobject_add_complete(struct kobject *kobj, struct kobject *parent)
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{
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const struct kobj_type *t;
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int error;
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kobj->parent = parent;
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error = sysfs_create_dir(kobj);
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if (error == 0 && kobj->ktype && kobj->ktype->default_attrs) {
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struct attribute **attr;
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t = kobj->ktype;
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for (attr = t->default_attrs; *attr != NULL; attr++) {
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error = sysfs_create_file(kobj, *attr);
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if (error)
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break;
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}
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if (error)
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sysfs_remove_dir(kobj);
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}
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return (error);
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}
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int
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kobject_add(struct kobject *kobj, struct kobject *parent, const char *fmt, ...)
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{
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va_list args;
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int error;
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va_start(args, fmt);
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error = kobject_set_name_vargs(kobj, fmt, args);
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va_end(args);
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if (error)
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return (error);
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return kobject_add_complete(kobj, parent);
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}
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void
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linux_kobject_release(struct kref *kref)
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{
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struct kobject *kobj;
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char *name;
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kobj = container_of(kref, struct kobject, kref);
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sysfs_remove_dir(kobj);
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name = kobj->name;
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if (kobj->ktype && kobj->ktype->release)
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kobj->ktype->release(kobj);
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kfree(name);
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}
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static void
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linux_kobject_kfree(struct kobject *kobj)
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{
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kfree(kobj);
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}
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static void
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linux_kobject_kfree_name(struct kobject *kobj)
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{
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if (kobj) {
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kfree(kobj->name);
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}
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}
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const struct kobj_type linux_kfree_type = {
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.release = linux_kobject_kfree
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};
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static ssize_t
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lkpi_kobj_attr_show(struct kobject *kobj, struct attribute *attr, char *buf)
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{
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struct kobj_attribute *ka =
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container_of(attr, struct kobj_attribute, attr);
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if (ka->show == NULL)
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return (-EIO);
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return (ka->show(kobj, ka, buf));
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}
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static ssize_t
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lkpi_kobj_attr_store(struct kobject *kobj, struct attribute *attr,
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const char *buf, size_t count)
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{
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struct kobj_attribute *ka =
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container_of(attr, struct kobj_attribute, attr);
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if (ka->store == NULL)
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return (-EIO);
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return (ka->store(kobj, ka, buf, count));
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}
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const struct sysfs_ops kobj_sysfs_ops = {
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.show = lkpi_kobj_attr_show,
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.store = lkpi_kobj_attr_store,
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};
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static void
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linux_device_release(struct device *dev)
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{
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@ -518,26 +348,6 @@ class_create(struct module *owner, const char *name)
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return (class);
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}
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int
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kobject_init_and_add(struct kobject *kobj, const struct kobj_type *ktype,
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struct kobject *parent, const char *fmt, ...)
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{
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va_list args;
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int error;
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kobject_init(kobj, ktype);
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kobj->ktype = ktype;
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kobj->parent = parent;
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kobj->name = NULL;
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va_start(args, fmt);
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error = kobject_set_name_vargs(kobj, fmt, args);
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va_end(args);
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if (error)
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return (error);
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return kobject_add_complete(kobj, parent);
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}
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static void
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linux_kq_lock(void *arg)
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{
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221
sys/compat/linuxkpi/common/src/linux_kobject.c
Normal file
221
sys/compat/linuxkpi/common/src/linux_kobject.c
Normal file
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@ -0,0 +1,221 @@
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/*-
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* Copyright (c) 2010 Isilon Systems, Inc.
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* Copyright (c) 2010 iX Systems, Inc.
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* Copyright (c) 2010 Panasas, Inc.
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* Copyright (c) 2013-2021 Mellanox Technologies, Ltd.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice unmodified, this list of conditions, and the following
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* disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <linux/kobject.h>
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#include <linux/sysfs.h>
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struct kobject *
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kobject_create(void)
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{
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struct kobject *kobj;
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kobj = kzalloc(sizeof(*kobj), GFP_KERNEL);
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if (kobj == NULL)
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return (NULL);
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kobject_init(kobj, &linux_kfree_type);
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return (kobj);
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}
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int
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kobject_set_name_vargs(struct kobject *kobj, const char *fmt, va_list args)
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{
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va_list tmp_va;
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int len;
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char *old;
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char *name;
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char dummy;
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old = kobj->name;
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if (old && fmt == NULL)
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return (0);
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/* compute length of string */
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va_copy(tmp_va, args);
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len = vsnprintf(&dummy, 0, fmt, tmp_va);
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va_end(tmp_va);
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/* account for zero termination */
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len++;
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/* check for error */
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if (len < 1)
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return (-EINVAL);
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/* allocate memory for string */
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name = kzalloc(len, GFP_KERNEL);
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if (name == NULL)
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return (-ENOMEM);
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vsnprintf(name, len, fmt, args);
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kobj->name = name;
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/* free old string */
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kfree(old);
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/* filter new string */
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for (; *name != '\0'; name++)
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if (*name == '/')
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*name = '!';
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return (0);
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}
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int
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kobject_set_name(struct kobject *kobj, const char *fmt, ...)
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{
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va_list args;
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int error;
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va_start(args, fmt);
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error = kobject_set_name_vargs(kobj, fmt, args);
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va_end(args);
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return (error);
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}
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static int
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kobject_add_complete(struct kobject *kobj, struct kobject *parent)
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{
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const struct kobj_type *t;
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int error;
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kobj->parent = parent;
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error = sysfs_create_dir(kobj);
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if (error == 0 && kobj->ktype && kobj->ktype->default_attrs) {
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struct attribute **attr;
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t = kobj->ktype;
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for (attr = t->default_attrs; *attr != NULL; attr++) {
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error = sysfs_create_file(kobj, *attr);
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if (error)
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break;
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}
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if (error)
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sysfs_remove_dir(kobj);
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}
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return (error);
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}
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int
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kobject_add(struct kobject *kobj, struct kobject *parent, const char *fmt, ...)
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{
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va_list args;
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int error;
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va_start(args, fmt);
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error = kobject_set_name_vargs(kobj, fmt, args);
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va_end(args);
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if (error)
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return (error);
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return kobject_add_complete(kobj, parent);
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}
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int
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kobject_init_and_add(struct kobject *kobj, const struct kobj_type *ktype,
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struct kobject *parent, const char *fmt, ...)
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{
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va_list args;
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int error;
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kobject_init(kobj, ktype);
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kobj->ktype = ktype;
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kobj->parent = parent;
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kobj->name = NULL;
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va_start(args, fmt);
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error = kobject_set_name_vargs(kobj, fmt, args);
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va_end(args);
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if (error)
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return (error);
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return kobject_add_complete(kobj, parent);
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}
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void
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linux_kobject_release(struct kref *kref)
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{
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struct kobject *kobj;
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char *name;
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kobj = container_of(kref, struct kobject, kref);
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sysfs_remove_dir(kobj);
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name = kobj->name;
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if (kobj->ktype && kobj->ktype->release)
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kobj->ktype->release(kobj);
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kfree(name);
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}
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static void
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linux_kobject_kfree(struct kobject *kobj)
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{
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kfree(kobj);
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}
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const struct kobj_type linux_kfree_type = {
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.release = linux_kobject_kfree
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};
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void
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linux_kobject_kfree_name(struct kobject *kobj)
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{
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if (kobj) {
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kfree(kobj->name);
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}
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}
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static ssize_t
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lkpi_kobj_attr_show(struct kobject *kobj, struct attribute *attr, char *buf)
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{
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struct kobj_attribute *ka =
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container_of(attr, struct kobj_attribute, attr);
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if (ka->show == NULL)
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return (-EIO);
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return (ka->show(kobj, ka, buf));
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}
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static ssize_t
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lkpi_kobj_attr_store(struct kobject *kobj, struct attribute *attr,
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const char *buf, size_t count)
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{
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struct kobj_attribute *ka =
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container_of(attr, struct kobj_attribute, attr);
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if (ka->store == NULL)
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return (-EIO);
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return (ka->store(kobj, ka, buf, count));
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}
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const struct sysfs_ops kobj_sysfs_ops = {
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.show = lkpi_kobj_attr_show,
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.store = lkpi_kobj_attr_store,
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};
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@ -4567,6 +4567,8 @@ compat/linuxkpi/common/src/linux_i2cbb.c optional compat_linuxkpi \
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compile-with "${LINUXKPI_C}"
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compat/linuxkpi/common/src/linux_interrupt.c optional compat_linuxkpi \
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compile-with "${LINUXKPI_C}"
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compat/linuxkpi/common/src/linux_kobject.c optional compat_linuxkpi \
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compile-with "${LINUXKPI_C}"
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compat/linuxkpi/common/src/linux_kthread.c optional compat_linuxkpi \
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compile-with "${LINUXKPI_C}"
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compat/linuxkpi/common/src/linux_lock.c optional compat_linuxkpi \
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@ -14,6 +14,7 @@ SRCS= linux_compat.c \
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linux_i2c.c \
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linux_i2cbb.c \
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linux_kmod.c \
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linux_kobject.c \
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linux_kthread.c \
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linux_lock.c \
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linux_netdev.c \
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