1 /* SPDX-License-Identifier: GPL-2.0 */
6   * externally represented as variable-length strings
39 	memset(&c->range, 0, sizeof(c->range));  in mls_context_init()
47 	dst->range.level[0].sens = src->range.level[0].sens;  in mls_context_cpy()
48 	rc = ebitmap_cpy(&dst->range.level[0].cat, &src->range.level[0].cat);  in mls_context_cpy()
52 	dst->range.level[1].sens = src->range.level[1].sens;  in mls_context_cpy()
53 	rc = ebitmap_cpy(&dst->range.level[1].cat, &src->range.level[1].cat);  in mls_context_cpy()
55 		ebitmap_destroy(&dst->range.level[0].cat);  in mls_context_cpy()
68 	dst->range.level[0].sens = src->range.level[0].sens;  in mls_context_cpy_low()
69 	rc = ebitmap_cpy(&dst->range.level[0].cat, &src->range.level[0].cat);  in mls_context_cpy_low()
73 	dst->range.level[1].sens = src->range.level[0].sens;  in mls_context_cpy_low()
74 	rc = ebitmap_cpy(&dst->range.level[1].cat, &src->range.level[0].cat);  in mls_context_cpy_low()
76 		ebitmap_destroy(&dst->range.level[0].cat);  in mls_context_cpy_low()
89 	dst->range.level[0].sens = src->range.level[1].sens;  in mls_context_cpy_high()
90 	rc = ebitmap_cpy(&dst->range.level[0].cat, &src->range.level[1].cat);  in mls_context_cpy_high()
94 	dst->range.level[1].sens = src->range.level[1].sens;  in mls_context_cpy_high()
95 	rc = ebitmap_cpy(&dst->range.level[1].cat, &src->range.level[1].cat);  in mls_context_cpy_high()
97 		ebitmap_destroy(&dst->range.level[0].cat);  in mls_context_cpy_high()
106 	struct mls_range *dr = &dst->range;  in mls_context_glblub()
107 	const struct mls_range *r1 = &c1->range, *r2 = &c2->range;  in mls_context_glblub()
110 	if (r1->level[1].sens < r2->level[0].sens ||  in mls_context_glblub()
111 	    r2->level[1].sens < r1->level[0].sens)  in mls_context_glblub()
113 		return -EINVAL;  in mls_context_glblub()
116 	dr->level[0].sens = max(r1->level[0].sens, r2->level[0].sens);  in mls_context_glblub()
119 	dr->level[1].sens = min(r1->level[1].sens, r2->level[1].sens);  in mls_context_glblub()
121 	rc = ebitmap_and(&dr->level[0].cat, &r1->level[0].cat,  in mls_context_glblub()
122 			 &r2->level[0].cat);  in mls_context_glblub()
126 	rc = ebitmap_and(&dr->level[1].cat, &r1->level[1].cat,  in mls_context_glblub()
127 			 &r2->level[1].cat);  in mls_context_glblub()
138 	return ((c1->range.level[0].sens == c2->range.level[0].sens) &&  in mls_context_cmp()
139 		ebitmap_cmp(&c1->range.level[0].cat, &c2->range.level[0].cat) &&  in mls_context_cmp()
140 		(c1->range.level[1].sens == c2->range.level[1].sens) &&  in mls_context_cmp()
141 		ebitmap_cmp(&c1->range.level[1].cat, &c2->range.level[1].cat));  in mls_context_cmp()
146 	ebitmap_destroy(&c->range.level[0].cat);  in mls_context_destroy()
147 	ebitmap_destroy(&c->range.level[1].cat);  in mls_context_destroy()
160 	dst->user = src->user;  in context_cpy()
161 	dst->role = src->role;  in context_cpy()
162 	dst->type = src->type;  in context_cpy()
163 	if (src->str) {  in context_cpy()
164 		dst->str = kstrdup(src->str, GFP_ATOMIC);  in context_cpy()
165 		if (!dst->str)  in context_cpy()
166 			return -ENOMEM;  in context_cpy()
167 		dst->len = src->len;  in context_cpy()
169 		dst->str = NULL;  in context_cpy()
170 		dst->len = 0;  in context_cpy()
174 		kfree(dst->str);  in context_cpy()
175 		dst->str = NULL;  in context_cpy()
176 		dst->len = 0;  in context_cpy()
184 	c->user = c->role = c->type = 0;  in context_destroy()
185 	kfree(c->str);  in context_destroy()
186 	c->str = NULL;  in context_destroy()
187 	c->len = 0;  in context_destroy()
194 	if (c1->len && c2->len)  in context_cmp()
195 		return (c1->len == c2->len && !strcmp(c1->str, c2->str));  in context_cmp()
196 	if (c1->len || c2->len)  in context_cmp()
198 	return ((c1->user == c2->user) && (c1->role == c2->role) &&  in context_cmp()
199 		(c1->type == c2->type) && mls_context_cmp(c1, c2));  in context_cmp()