forked from Qortal/Brooklyn
2a709f28fa
* 0day explit mitigation * Memory corruption prevention * Privilege escalation prevention * Buffer over flow prevention * File System corruption defense * Thread escape prevention This may very well be the most intensive inclusion to BrooklynR. This will not be part of an x86 suite nor it will be released as tool kit. The security core toolkit will remain part of kernel base.
102 lines
2.9 KiB
C
102 lines
2.9 KiB
C
#ifndef __GADGET_CONFIGFS__
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#define __GADGET_CONFIGFS__
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#include <linux/configfs.h>
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int check_user_usb_string(const char *name,
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struct usb_gadget_strings *stringtab_dev);
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#define GS_STRINGS_W(__struct, __name) \
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static ssize_t __struct##_##__name##_store(struct config_item *item, \
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const char *page, size_t len) \
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{ \
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struct __struct *gs = to_##__struct(item); \
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int ret; \
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\
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ret = usb_string_copy(page, &gs->__name); \
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if (ret) \
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return ret; \
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return len; \
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}
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#define GS_STRINGS_R(__struct, __name) \
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static ssize_t __struct##_##__name##_show(struct config_item *item, char *page) \
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{ \
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struct __struct *gs = to_##__struct(item); \
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return sprintf(page, "%s\n", gs->__name ?: ""); \
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}
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#define GS_STRINGS_RW(struct_name, _name) \
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GS_STRINGS_R(struct_name, _name) \
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GS_STRINGS_W(struct_name, _name) \
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CONFIGFS_ATTR(struct_name##_, _name)
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#define USB_CONFIG_STRING_RW_OPS(struct_in) \
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static struct configfs_item_operations struct_in##_langid_item_ops = { \
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.release = struct_in##_attr_release, \
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}; \
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\
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static struct config_item_type struct_in##_langid_type = { \
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.ct_item_ops = &struct_in##_langid_item_ops, \
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.ct_attrs = struct_in##_langid_attrs, \
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.ct_owner = THIS_MODULE, \
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}
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#define USB_CONFIG_STRINGS_LANG(struct_in, struct_member) \
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static struct config_group *struct_in##_strings_make( \
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struct config_group *group, \
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const char *name) \
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{ \
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struct struct_member *gi; \
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struct struct_in *gs; \
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struct struct_in *new; \
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int langs = 0; \
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int ret; \
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\
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new = kzalloc(sizeof(*new), GFP_KERNEL); \
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if (!new) \
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return ERR_PTR(-ENOMEM); \
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\
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ret = check_user_usb_string(name, &new->stringtab_dev); \
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if (ret) \
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goto err; \
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config_group_init_type_name(&new->group, name, \
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&struct_in##_langid_type); \
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\
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gi = container_of(group, struct struct_member, strings_group); \
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ret = -EEXIST; \
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list_for_each_entry(gs, &gi->string_list, list) { \
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if (gs->stringtab_dev.language == new->stringtab_dev.language) \
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goto err; \
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langs++; \
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} \
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ret = -EOVERFLOW; \
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if (langs >= MAX_USB_STRING_LANGS) \
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goto err; \
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\
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list_add_tail(&new->list, &gi->string_list); \
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return &new->group; \
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err: \
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kfree(new); \
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return ERR_PTR(ret); \
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} \
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\
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static void struct_in##_strings_drop( \
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struct config_group *group, \
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struct config_item *item) \
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{ \
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config_item_put(item); \
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} \
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\
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static struct configfs_group_operations struct_in##_strings_ops = { \
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.make_group = &struct_in##_strings_make, \
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.drop_item = &struct_in##_strings_drop, \
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}; \
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\
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static struct config_item_type struct_in##_strings_type = { \
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.ct_group_ops = &struct_in##_strings_ops, \
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.ct_owner = THIS_MODULE, \
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}
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#endif
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