68 lines
1.7 KiB
C
68 lines
1.7 KiB
C
/*
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* Copyright (c) 2017 Intel Corporation
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <kernel.h>
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#include <syscall_handler.h>
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#include <kernel_structs.h>
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static struct z_object *validate_any_object(void *obj)
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{
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struct z_object *ko;
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int ret;
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ko = z_object_find(obj);
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/* This can be any kernel object and it doesn't have to be
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* initialized
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*/
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ret = z_object_validate(ko, K_OBJ_ANY, _OBJ_INIT_ANY);
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if (ret != 0) {
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#ifdef CONFIG_LOG
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z_dump_object_error(ret, obj, ko, K_OBJ_ANY);
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#endif
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return NULL;
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}
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return ko;
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}
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/* Normally these would be included in userspace.c, but the way
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* syscall_dispatch.c declares weak handlers results in build errors if these
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* are located in userspace.c. Just put in a separate file.
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*
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* To avoid double z_object_find() lookups, we don't call the implementation
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* function, but call a level deeper.
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*/
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static inline void z_vrfy_k_object_access_grant(void *object,
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struct k_thread *thread)
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{
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struct z_object *ko;
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Z_OOPS(Z_SYSCALL_OBJ_INIT(thread, K_OBJ_THREAD));
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ko = validate_any_object(object);
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Z_OOPS(Z_SYSCALL_VERIFY_MSG(ko != NULL, "object %p access denied",
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object));
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z_thread_perms_set(ko, thread);
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}
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#include <syscalls/k_object_access_grant_mrsh.c>
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static inline void z_vrfy_k_object_release(void *object)
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{
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struct z_object *ko;
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ko = validate_any_object((void *)object);
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Z_OOPS(Z_SYSCALL_VERIFY_MSG(ko != NULL, "object %p access denied",
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(void *)object));
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z_thread_perms_clear(ko, _current);
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}
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#include <syscalls/k_object_release_mrsh.c>
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static inline void *z_vrfy_k_object_alloc(enum k_objects otype)
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{
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return z_impl_k_object_alloc(otype);
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}
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#include <syscalls/k_object_alloc_mrsh.c>
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