GCOV - Varnish Cache


/*-
 * Copyright (c) 2006 Verdens Gang AS
 * Copyright (c) 2006-2021 Varnish Software AS
 * All rights reserved.
 *
 * Author: Poul-Henning Kamp <phk@phk.freebsd.dk>
 *
 * SPDX-License-Identifier: BSD-2-Clause
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 * Runtime support for compiled VCL programs: private variables
 */

#include "config.h"


#include <stdlib.h>

#include "cache_varnishd.h"
#include "vcl.h"
#include "vcc_interface.h"

enum vrt_priv_storage_e {
        VRT_PRIV_ST_WS = 1,
        VRT_PRIV_ST_HEAP
};

struct vrt_priv {
        unsigned                        magic;
#define VRT_PRIV_MAGIC                  0x24157a52
        enum vrt_priv_storage_e         storage;
        VRBT_ENTRY(vrt_priv)            entry;
        struct vmod_priv                priv[1];
        uintptr_t                       vmod_id;
};

struct vrt_privs cli_task_privs[1];

static inline int vrt_priv_dyncmp(const struct vrt_priv *,
    const struct vrt_priv *);

VRBT_GENERATE_INSERT_COLOR(vrt_privs, vrt_priv, entry, static)
VRBT_GENERATE_FIND(vrt_privs, vrt_priv, entry, vrt_priv_dyncmp, static)
VRBT_GENERATE_INSERT_FINISH(vrt_privs, vrt_priv, entry, static)
VRBT_GENERATE_INSERT(vrt_privs, vrt_priv, entry, vrt_priv_dyncmp, static)
VRBT_GENERATE_MINMAX(vrt_privs, vrt_priv, entry, static)
VRBT_GENERATE_NEXT(vrt_privs, vrt_priv, entry, static)

/*--------------------------------------------------------------------
 */

void
pan_privs(struct vsb *vsb, const struct vrt_privs *privs)
{
        struct vrt_priv *vp;
        const struct vmod_priv *p;
        const struct vmod_priv_methods *m;

        if (privs == NULL) {
                VSB_cat(vsb, "privs = NULL\n");
                return;
        }
        VSB_printf(vsb, "privs = %p {\n", privs);
        VSB_indent(vsb, 2);
        VRBT_FOREACH(vp, vrt_privs, privs) {
                if (PAN_dump_oneline(vsb, vp, VRT_PRIV_MAGIC, "priv"))
                        continue;
                p = vp->priv;
                //lint -e{774}
                if (p == NULL) {
                        // should never happen
                        VSB_printf(vsb, "NULL vmod %jx},\n",
                            (uintmax_t)vp->vmod_id);
                        continue;
                }
                m = p->methods;
                VSB_printf(vsb,
                    "{p %p l %ld m %p t \"%s\"} vmod %jx},\n",
                    p->priv, p->len, m,
                    m != NULL ? m->type : "",
                    (uintmax_t)vp->vmod_id
                );
        }
        VSB_indent(vsb, -2);
        VSB_cat(vsb, "},\n");
}

/*--------------------------------------------------------------------
 */

static void
VRTPRIV_init(struct vrt_privs *privs)
{

        VRBT_INIT(privs);
}

static inline int
vrt_priv_dyncmp(const struct vrt_priv *vp1, const struct vrt_priv *vp2)
{
        if (vp1->vmod_id < vp2->vmod_id)
                return (-1);
        if (vp1->vmod_id > vp2->vmod_id)
                return (1);
        return (0);
}

static struct vmod_priv *
vrt_priv_dynamic_get(const struct vrt_privs *privs, uintptr_t vmod_id)
{
        struct vrt_priv *vp;

        const struct vrt_priv needle = {.vmod_id = vmod_id};

        vp = VRBT_FIND(vrt_privs, privs, &needle);
        if (vp == NULL)
                return (NULL);

        CHECK_OBJ(vp, VRT_PRIV_MAGIC);
        assert(vp->vmod_id == vmod_id);
        return (vp->priv);
}

static struct vmod_priv *
vrt_priv_dynamic(struct ws *ws, struct vrt_privs *privs, uintptr_t vmod_id)
{
        //lint --e{593} vp allocated, vp->priv returned
        struct vrt_priv *vp, *ovp;
        enum vrt_priv_storage_e storage;

        AN(vmod_id);

        if (LIKELY(WS_ReserveSize(ws, sizeof *vp) != 0)) {
                vp = WS_Reservation(ws);
                storage = VRT_PRIV_ST_WS;
        }
        else {
                vp = malloc(sizeof *vp);
                storage = VRT_PRIV_ST_HEAP;
        }
        AN(vp);

        INIT_OBJ(vp, VRT_PRIV_MAGIC);
        vp->storage = storage;
        vp->vmod_id = vmod_id;
        ovp = VRBT_INSERT(vrt_privs, privs, vp);
        if (ovp == NULL) {
                if (storage == VRT_PRIV_ST_WS)
                        WS_Release(ws, sizeof *vp);
                return (vp->priv);
        }
        if (storage == VRT_PRIV_ST_WS)
                WS_Release(ws, 0);
        else if (storage == VRT_PRIV_ST_HEAP)
                free(vp);
        else
                WRONG("priv storage");
        return (ovp->priv);
}

static struct vrt_privs *
vrt_priv_task_context(VRT_CTX)
{

        CHECK_OBJ_NOTNULL(ctx, VRT_CTX_MAGIC);

        /* In pipe mode, both req and bo are set. We use req */

        assert(ctx->req == NULL || ctx->bo == NULL ||
            ctx->method == VCL_MET_PIPE || ctx->method == 0);

        if (ctx->req) {
                CHECK_OBJ(ctx->req, REQ_MAGIC);
                return (ctx->req->privs);
        }
        if (ctx->bo) {
                CHECK_OBJ(ctx->bo, BUSYOBJ_MAGIC);
                return (ctx->bo->privs);
        }
        ASSERT_CLI();
        return (cli_task_privs);
}

struct vmod_priv *
VRT_priv_task_get(VRT_CTX, const void *vmod_id)
{
        CHECK_OBJ_NOTNULL(ctx, VRT_CTX_MAGIC);

        return (vrt_priv_dynamic_get(
            vrt_priv_task_context(ctx),
            (uintptr_t)vmod_id));
}

struct vmod_priv *
VRT_priv_task(VRT_CTX, const void *vmod_id)
{

        CHECK_OBJ_NOTNULL(ctx, VRT_CTX_MAGIC);

        return (vrt_priv_dynamic(
            ctx->ws,
            vrt_priv_task_context(ctx),
            (uintptr_t)vmod_id));
}

/*
 * XXX #3498 on VRT_fail(): Would be better to move the PRIV_TOP check to VCC
 *
 * This will fail in the preamble of any VCL SUB containing a call to a vmod
 * function with a PRIV_TOP argument, which might not exactly be pola
 */

#define VRT_PRIV_TOP_PREP(ctx, req, sp, top)    do {                    \
                CHECK_OBJ_NOTNULL(ctx, VRT_CTX_MAGIC);                  \
                req = (ctx)->req;                                       \
                if (req == NULL) {                                      \
                        VRT_fail(ctx, "PRIV_TOP is only accessible "    \
                            "in client VCL context");                   \
                        return (NULL);                                  \
                }                                                       \
                CHECK_OBJ(req, REQ_MAGIC);                              \
                sp = (ctx)->sp;                                         \
                CHECK_OBJ_NOTNULL(sp, SESS_MAGIC);                      \
                top = (req)->top;                                       \
                CHECK_OBJ_NOTNULL(top, REQTOP_MAGIC);                   \
                req = (top)->topreq;                                    \
                CHECK_OBJ_NOTNULL(req, REQ_MAGIC);                      \
        } while(0)

struct vmod_priv *
VRT_priv_top_get(VRT_CTX, const void *vmod_id)
{
        struct req *req;
        struct sess *sp;
        struct reqtop *top;
        struct vmod_priv *priv;

        VRT_PRIV_TOP_PREP(ctx, req, sp, top);

        Lck_Lock(&sp->mtx);
        priv = vrt_priv_dynamic_get(top->privs, (uintptr_t)vmod_id);
        Lck_Unlock(&sp->mtx);
        return (priv);
}

struct vmod_priv *
VRT_priv_top(VRT_CTX, const void *vmod_id)
{
        struct req *req;
        struct sess *sp;
        struct reqtop *top;
        struct vmod_priv *priv;

        VRT_PRIV_TOP_PREP(ctx, req, sp, top);

        Lck_Lock(&sp->mtx);
        priv = vrt_priv_dynamic(req->ws, top->privs, (uintptr_t)vmod_id);
        Lck_Unlock(&sp->mtx);
        return (priv);
}

/*--------------------------------------------------------------------
 */

void
VRT_priv_fini(VRT_CTX, const struct vmod_priv *p)
{
        const struct vmod_priv_methods *m;

        CHECK_OBJ_NOTNULL(ctx, VRT_CTX_MAGIC);

        m = p->methods;
        if (m == NULL)
                return;

        CHECK_OBJ(m, VMOD_PRIV_METHODS_MAGIC);
        if (p->priv == NULL || m->fini == NULL)
                return;

        // XXX remove me after soak in
        VRT_CTX_Assert(ctx);

        m->fini(ctx, p->priv);
        assert(ctx->vpi->handling == 0 || ctx->vpi->handling == VCL_RET_FAIL);
}

/*--------------------------------------------------------------------*/

void
VCL_TaskEnter(struct vrt_privs *privs)
{

        VRTPRIV_init(privs);
}

void
VCL_TaskLeave(VRT_CTX, struct vrt_privs *privs)
{
        struct vrt_priv *vp, *vp1;

        CHECK_OBJ_NOTNULL(ctx, VRT_CTX_MAGIC);
        AN(ctx->vpi);
        assert(ctx->vpi->handling == 0 || ctx->vpi->handling == VCL_RET_FAIL);

        /*
         * NB: We don't bother removing entries as we finish them because it's
         * a costly operation. Instead we safely walk the whole tree and clear
         * the head at the very end.
         */
        VRBT_FOREACH_SAFE(vp, vrt_privs, privs, vp1) {
                CHECK_OBJ(vp, VRT_PRIV_MAGIC);
                VRT_priv_fini(ctx, vp->priv);
                if (vp->storage == VRT_PRIV_ST_HEAP)
                        free(vp);
        }
        ZERO_OBJ(privs, sizeof *privs);
}

		varnish-cache/bin/varnishd/cache/cache_vrt_priv.c
0		/*-
1		* Copyright (c) 2006 Verdens Gang AS
2		* Copyright (c) 2006-2021 Varnish Software AS
3		* All rights reserved.
4		*
5		* Author: Poul-Henning Kamp <phk@phk.freebsd.dk>
6		*
7		* SPDX-License-Identifier: BSD-2-Clause
8		*
9		* Redistribution and use in source and binary forms, with or without
10		* modification, are permitted provided that the following conditions
11		* are met:
12		* 1. Redistributions of source code must retain the above copyright
13		* notice, this list of conditions and the following disclaimer.
14		* 2. Redistributions in binary form must reproduce the above copyright
15		* notice, this list of conditions and the following disclaimer in the
16		* documentation and/or other materials provided with the distribution.
17		*
18		* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
19		* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20		* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21		* ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
22		* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23		* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24		* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25		* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26		* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27		* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28		* SUCH DAMAGE.
29		*
30		* Runtime support for compiled VCL programs: private variables
31		*/
32
33		#include "config.h"
34
35
36		#include <stdlib.h>
37
38		#include "cache_varnishd.h"
39		#include "vcl.h"
40		#include "vcc_interface.h"
41
42		enum vrt_priv_storage_e {
43		VRT_PRIV_ST_WS = 1,
44		VRT_PRIV_ST_HEAP
45		};
46
47		struct vrt_priv {
48		unsigned magic;
49		#define VRT_PRIV_MAGIC 0x24157a52
50		enum vrt_priv_storage_e storage;
51		VRBT_ENTRY(vrt_priv) entry;
52		struct vmod_priv priv[1];
53		uintptr_t vmod_id;
54		};
55
56		struct vrt_privs cli_task_privs[1];
57
58		static inline int vrt_priv_dyncmp(const struct vrt_priv *,
59		const struct vrt_priv *);
60
61	164200	VRBT_GENERATE_INSERT_COLOR(vrt_privs, vrt_priv, entry, static)
62	3996822160	VRBT_GENERATE_FIND(vrt_privs, vrt_priv, entry, vrt_priv_dyncmp, static)
63	56440	VRBT_GENERATE_INSERT_FINISH(vrt_privs, vrt_priv, entry, static)
64	478560	VRBT_GENERATE_INSERT(vrt_privs, vrt_priv, entry, vrt_priv_dyncmp, static)
65	491394	VRBT_GENERATE_MINMAX(vrt_privs, vrt_priv, entry, static)
66	98640	VRBT_GENERATE_NEXT(vrt_privs, vrt_priv, entry, static)
67
68		/*--------------------------------------------------------------------
69		*/
70
71		void
72	480	pan_privs(struct vsb vsb, const struct vrt_privs privs)
73		{
74		struct vrt_priv *vp;
75		const struct vmod_priv *p;
76		const struct vmod_priv_methods *m;
77
78	480	if (privs == NULL) {
79	0	VSB_cat(vsb, "privs = NULL\n");
80	0	return;
81		}
82	480	VSB_printf(vsb, "privs = %p {\n", privs);
83	480	VSB_indent(vsb, 2);
84	560	VRBT_FOREACH(vp, vrt_privs, privs) {
85	80	if (PAN_dump_oneline(vsb, vp, VRT_PRIV_MAGIC, "priv"))
86	0	continue;
87	80	p = vp->priv;
88		//lint -e{774}
89	80	if (p == NULL) {
90		// should never happen
91	0	VSB_printf(vsb, "NULL vmod %jx},\n",
92	0	(uintmax_t)vp->vmod_id);
93	0	continue;
94		}
95	80	m = p->methods;
96	160	VSB_printf(vsb,
97		"{p %p l %ld m %p t \"%s\"} vmod %jx},\n",
98	80	p->priv, p->len, m,
99	80	m != NULL ? m->type : "",
100	80	(uintmax_t)vp->vmod_id
101		);
102	80	}
103	480	VSB_indent(vsb, -2);
104	480	VSB_cat(vsb, "},\n");
105	480	}
106
107		/*--------------------------------------------------------------------
108		*/
109
110		static void
111	477098	VRTPRIV_init(struct vrt_privs *privs)
112		{
113
114	477098	VRBT_INIT(privs);
115	477098	}
116
117		static inline int
118	3997238040	vrt_priv_dyncmp(const struct vrt_priv vp1, const struct vrt_priv vp2)
119		{
120	3997238040	if (vp1->vmod_id < vp2->vmod_id)
121	1882470560	return (-1);
122	2114767480	if (vp1->vmod_id > vp2->vmod_id)
123	1670339080	return (1);
124	444428400	return (0);
125	3997238040	}
126
127		static struct vmod_priv *
128	444414880	vrt_priv_dynamic_get(const struct vrt_privs *privs, uintptr_t vmod_id)
129		{
130		struct vrt_priv *vp;
131
132	444414880	const struct vrt_priv needle = {.vmod_id = vmod_id};
133
134	444414880	vp = VRBT_FIND(vrt_privs, privs, &needle);
135	444414880	if (vp == NULL)
136	6240	return (NULL);
137
138	444408640	CHECK_OBJ(vp, VRT_PRIV_MAGIC);
139	444408640	assert(vp->vmod_id == vmod_id);
140	444408640	return (vp->priv);
141	444414880	}
142
143		static struct vmod_priv *
144	76200	vrt_priv_dynamic(struct ws ws, struct vrt_privs privs, uintptr_t vmod_id)
145		{
146		//lint --e{593} vp allocated, vp->priv returned
147		struct vrt_priv vp, ovp;
148		enum vrt_priv_storage_e storage;
149
150	76200	AN(vmod_id);
151
152	76200	if (LIKELY(WS_ReserveSize(ws, sizeof *vp) != 0)) {
153	73600	vp = WS_Reservation(ws);
154	73600	storage = VRT_PRIV_ST_WS;
155	73600	}
156		else {
157	2600	vp = malloc(sizeof *vp);
158	2600	storage = VRT_PRIV_ST_HEAP;
159		}
160	76200	AN(vp);
161
162	76200	INIT_OBJ(vp, VRT_PRIV_MAGIC);
163	76200	vp->storage = storage;
164	76200	vp->vmod_id = vmod_id;
165	76200	ovp = VRBT_INSERT(vrt_privs, privs, vp);
166	76200	if (ovp == NULL) {
167	56440	if (storage == VRT_PRIV_ST_WS)
168	53840	WS_Release(ws, sizeof *vp);
169	56440	return (vp->priv);
170		}
171	19760	if (storage == VRT_PRIV_ST_WS)
172	19760	WS_Release(ws, 0);
173	0	else if (storage == VRT_PRIV_ST_HEAP)
174	0	free(vp);
175		else
176	0	WRONG("priv storage");
177	19760	return (ovp->priv);
178	76200	}
179
180		static struct vrt_privs *
181	444489600	vrt_priv_task_context(VRT_CTX)
182		{
183
184	444489600	CHECK_OBJ_NOTNULL(ctx, VRT_CTX_MAGIC);
185
186		/* In pipe mode, both req and bo are set. We use req */
187
188	444489600	assert(ctx->req == NULL \|\| ctx->bo == NULL \|\|
189		ctx->method == VCL_MET_PIPE \|\| ctx->method == 0);
190
191	444489600	if (ctx->req) {
192	444470040	CHECK_OBJ(ctx->req, REQ_MAGIC);
193	444470040	return (ctx->req->privs);
194		}
195	19560	if (ctx->bo) {
196	12800	CHECK_OBJ(ctx->bo, BUSYOBJ_MAGIC);
197	12800	return (ctx->bo->privs);
198		}
199	6760	ASSERT_CLI();
200	6760	return (cli_task_privs);
201	444489600	}
202
203		struct vmod_priv *
204	444414480	VRT_priv_task_get(VRT_CTX, const void *vmod_id)
205		{
206	444414480	CHECK_OBJ_NOTNULL(ctx, VRT_CTX_MAGIC);
207
208	444414480	return (vrt_priv_dynamic_get(
209	444414480	vrt_priv_task_context(ctx),
210	444414480	(uintptr_t)vmod_id));
211		}
212
213		struct vmod_priv *
214	75120	VRT_priv_task(VRT_CTX, const void *vmod_id)
215		{
216
217	75120	CHECK_OBJ_NOTNULL(ctx, VRT_CTX_MAGIC);
218
219	75120	return (vrt_priv_dynamic(
220	75120	ctx->ws,
221	75120	vrt_priv_task_context(ctx),
222	75120	(uintptr_t)vmod_id));
223		}
224
225		/*
226		* XXX #3498 on VRT_fail(): Would be better to move the PRIV_TOP check to VCC
227		*
228		* This will fail in the preamble of any VCL SUB containing a call to a vmod
229		* function with a PRIV_TOP argument, which might not exactly be pola
230		*/
231
232		#define VRT_PRIV_TOP_PREP(ctx, req, sp, top) do { \
233		CHECK_OBJ_NOTNULL(ctx, VRT_CTX_MAGIC); \
234		req = (ctx)->req; \
235		if (req == NULL) { \
236		VRT_fail(ctx, "PRIV_TOP is only accessible " \
237		"in client VCL context"); \
238		return (NULL); \
239		} \
240		CHECK_OBJ(req, REQ_MAGIC); \
241		sp = (ctx)->sp; \
242		CHECK_OBJ_NOTNULL(sp, SESS_MAGIC); \
243		top = (req)->top; \
244		CHECK_OBJ_NOTNULL(top, REQTOP_MAGIC); \
245		req = (top)->topreq; \
246		CHECK_OBJ_NOTNULL(req, REQ_MAGIC); \
247		} while(0)
248
249		struct vmod_priv *
250	400	VRT_priv_top_get(VRT_CTX, const void *vmod_id)
251		{
252		struct req *req;
253		struct sess *sp;
254		struct reqtop *top;
255		struct vmod_priv *priv;
256
257	400	VRT_PRIV_TOP_PREP(ctx, req, sp, top);
258
259	400	Lck_Lock(&sp->mtx);
260	400	priv = vrt_priv_dynamic_get(top->privs, (uintptr_t)vmod_id);
261	400	Lck_Unlock(&sp->mtx);
262	400	return (priv);
263	400	}
264
265		struct vmod_priv *
266	1080	VRT_priv_top(VRT_CTX, const void *vmod_id)
267		{
268		struct req *req;
269		struct sess *sp;
270		struct reqtop *top;
271		struct vmod_priv *priv;
272
273	1080	VRT_PRIV_TOP_PREP(ctx, req, sp, top);
274
275	1080	Lck_Lock(&sp->mtx);
276	1080	priv = vrt_priv_dynamic(req->ws, top->privs, (uintptr_t)vmod_id);
277	1080	Lck_Unlock(&sp->mtx);
278	1080	return (priv);
279	1080	}
280
281		/*--------------------------------------------------------------------
282		*/
283
284		void
285	59992	VRT_priv_fini(VRT_CTX, const struct vmod_priv *p)
286		{
287		const struct vmod_priv_methods *m;
288
289	59992	CHECK_OBJ_NOTNULL(ctx, VRT_CTX_MAGIC);
290
291	59992	m = p->methods;
292	59992	if (m == NULL)
293	46384	return;
294
295	13608	CHECK_OBJ(m, VMOD_PRIV_METHODS_MAGIC);
296	13608	if (p->priv == NULL \|\| m->fini == NULL)
297	0	return;
298
299		// XXX remove me after soak in
300	13608	VRT_CTX_Assert(ctx);
301
302	13608	m->fini(ctx, p->priv);
303	13608	assert(ctx->vpi->handling == 0 \|\| ctx->vpi->handling == VCL_RET_FAIL);
304	59992	}
305
306		/--------------------------------------------------------------------/
307
308		void
309	477103	VCL_TaskEnter(struct vrt_privs *privs)
310		{
311
312	477103	VRTPRIV_init(privs);
313	477103	}
314
315		void
316	476668	VCL_TaskLeave(VRT_CTX, struct vrt_privs *privs)
317		{
318		struct vrt_priv vp, vp1;
319
320	476668	CHECK_OBJ_NOTNULL(ctx, VRT_CTX_MAGIC);
321	476668	AN(ctx->vpi);
322	476668	assert(ctx->vpi->handling == 0 \|\| ctx->vpi->handling == VCL_RET_FAIL);
323
324		/*
325		* NB: We don't bother removing entries as we finish them because it's
326		* a costly operation. Instead we safely walk the whole tree and clear
327		* the head at the very end.
328		*/
329	533028	VRBT_FOREACH_SAFE(vp, vrt_privs, privs, vp1) {
330	56360	CHECK_OBJ(vp, VRT_PRIV_MAGIC);
331	56360	VRT_priv_fini(ctx, vp->priv);
332	56360	if (vp->storage == VRT_PRIV_ST_HEAP)
333	2600	free(vp);
334	56360	}
335	476668	ZERO_OBJ(privs, sizeof *privs);
336	476668	}