GCOV - Varnish Cache


/*-
 * Copyright (c) 2006 Verdens Gang AS
 * Copyright (c) 2006-2011 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.
 *
 */

#include "config.h"

#include <sys/stat.h>

#include <fcntl.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>

#include "mgt/mgt.h"

#include "vsm_priv.h"

#include "common/heritage.h"
#include "common/vsmw.h"

static struct vsmw *mgt_vsmw;

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

void
mgt_SHM_static_alloc(const void *ptr, ssize_t size,
    const char *category, const char *ident)
{
        void *p;

        p = VSMW_Allocf(mgt_vsmw, NULL, category, size, "%s", ident);
        AN(p);
        memcpy(p, ptr, size);
}

/*--------------------------------------------------------------------
 * Exit handler that clears the owning pid from the SHMLOG
 */

static void
mgt_shm_atexit(void)
{

        /* Do not let VCC kill our VSM */
        if (getpid() != heritage.mgt_pid)
                return;
        VJ_master(JAIL_MASTER_FILE);
        VSMW_Destroy(&mgt_vsmw);
        if (!MGT_DO_DEBUG(DBG_VTC_MODE)) {
                VJ_master(JAIL_MASTER_SYSTEM);
                AZ(system("rm -rf " VSM_MGT_DIRNAME));
                AZ(system("rm -rf " VSM_CHILD_DIRNAME));
        }
        VJ_master(JAIL_MASTER_LOW);
}

/*--------------------------------------------------------------------
 * Initialize VSM subsystem
 */

void
mgt_SHM_Init(void)
{
        int fd;

        VJ_master(JAIL_MASTER_SYSTEM);
        AZ(system("rm -rf " VSM_MGT_DIRNAME));
        VJ_master(JAIL_MASTER_FILE);
        AZ(mkdir(VSM_MGT_DIRNAME, 0755));
        fd = open(VSM_MGT_DIRNAME, O_RDONLY);
        VJ_fix_fd(fd, JAIL_FIXFD_VSMMGT);
        VJ_master(JAIL_MASTER_LOW);
        mgt_vsmw = VSMW_New(fd, 0640, "_.index");
        AN(mgt_vsmw);

        heritage.proc_vsmw = mgt_vsmw;

        /* Setup atexit handler */
        AZ(atexit(mgt_shm_atexit));
}

void
mgt_SHM_ChildNew(void)
{

        VJ_master(JAIL_MASTER_SYSTEM);
        AZ(system("rm -rf " VSM_CHILD_DIRNAME));
        VJ_master(JAIL_MASTER_FILE);
        AZ(mkdir(VSM_CHILD_DIRNAME, 0750));

        heritage.vsm_fd = open(VSM_CHILD_DIRNAME, O_RDONLY);
        assert(heritage.vsm_fd >= 0);
        VJ_fix_fd(heritage.vsm_fd, JAIL_FIXFD_VSMWRK);
        VJ_master(JAIL_MASTER_LOW);

        MCH_Fd_Inherit(heritage.vsm_fd, "VSMW");

        heritage.param = VSMW_Allocf(mgt_vsmw, NULL, VSM_CLASS_PARAM,
            sizeof *heritage.param, "");
        AN(heritage.param);
        *heritage.param = mgt_param;

        heritage.panic_str_len = 64 * 1024;
        heritage.panic_str = VSMW_Allocf(mgt_vsmw, NULL, "Panic",
            heritage.panic_str_len, "");
        AN(heritage.panic_str);
}

void
mgt_SHM_ChildDestroy(void)
{

        closefd(&heritage.vsm_fd);
        if (!MGT_DO_DEBUG(DBG_VTC_MODE)) {
                VJ_master(JAIL_MASTER_SYSTEM);
                AZ(system("rm -rf " VSM_CHILD_DIRNAME));
                VJ_master(JAIL_MASTER_LOW);
        }
        VSMW_Free(mgt_vsmw, (void**)&heritage.panic_str);
        VSMW_Free(mgt_vsmw, (void**)&heritage.param);
}

		varnish-cache/bin/varnishd/mgt/mgt_shmem.c
0		/*-
1		* Copyright (c) 2006 Verdens Gang AS
2		* Copyright (c) 2006-2011 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		*/
31
32		#include "config.h"
33
34		#include <sys/stat.h>
35
36		#include <fcntl.h>
37		#include <stdarg.h>
38		#include <stdio.h>
39		#include <stdlib.h>
40		#include <string.h>
41		#include <unistd.h>
42
43		#include "mgt/mgt.h"
44
45		#include "vsm_priv.h"
46
47		#include "common/heritage.h"
48		#include "common/vsmw.h"
49
50		static struct vsmw *mgt_vsmw;
51
52		/*--------------------------------------------------------------------
53		*/
54
55		void
56	68750	mgt_SHM_static_alloc(const void *ptr, ssize_t size,
57		const char category, const char ident)
58		{
59		void *p;
60
61	68750	p = VSMW_Allocf(mgt_vsmw, NULL, category, size, "%s", ident);
62	68750	AN(p);
63	68750	memcpy(p, ptr, size);
64	68750	}
65
66		/*--------------------------------------------------------------------
67		* Exit handler that clears the owning pid from the SHMLOG
68		*/
69
70		static void
71	109050	mgt_shm_atexit(void)
72		{
73
74		/* Do not let VCC kill our VSM */
75	109050	if (getpid() != heritage.mgt_pid)
76	86125	return;
77	22925	VJ_master(JAIL_MASTER_FILE);
78	22925	VSMW_Destroy(&mgt_vsmw);
79	22925	if (!MGT_DO_DEBUG(DBG_VTC_MODE)) {
80	300	VJ_master(JAIL_MASTER_SYSTEM);
81	300	AZ(system("rm -rf " VSM_MGT_DIRNAME));
82	300	AZ(system("rm -rf " VSM_CHILD_DIRNAME));
83	300	}
84	22925	VJ_master(JAIL_MASTER_LOW);
85	109050	}
86
87		/*--------------------------------------------------------------------
88		* Initialize VSM subsystem
89		*/
90
91		void
92	22925	mgt_SHM_Init(void)
93		{
94		int fd;
95
96	22925	VJ_master(JAIL_MASTER_SYSTEM);
97	22925	AZ(system("rm -rf " VSM_MGT_DIRNAME));
98	22925	VJ_master(JAIL_MASTER_FILE);
99	22925	AZ(mkdir(VSM_MGT_DIRNAME, 0755));
100	22925	fd = open(VSM_MGT_DIRNAME, O_RDONLY);
101	22925	VJ_fix_fd(fd, JAIL_FIXFD_VSMMGT);
102	22925	VJ_master(JAIL_MASTER_LOW);
103	22925	mgt_vsmw = VSMW_New(fd, 0640, "_.index");
104	22925	AN(mgt_vsmw);
105
106	22925	heritage.proc_vsmw = mgt_vsmw;
107
108		/* Setup atexit handler */
109	22925	AZ(atexit(mgt_shm_atexit));
110	22925	}
111
112		void
113	22775	mgt_SHM_ChildNew(void)
114		{
115
116	22775	VJ_master(JAIL_MASTER_SYSTEM);
117	22775	AZ(system("rm -rf " VSM_CHILD_DIRNAME));
118	22775	VJ_master(JAIL_MASTER_FILE);
119	22775	AZ(mkdir(VSM_CHILD_DIRNAME, 0750));
120
121	22775	heritage.vsm_fd = open(VSM_CHILD_DIRNAME, O_RDONLY);
122	22775	assert(heritage.vsm_fd >= 0);
123	22775	VJ_fix_fd(heritage.vsm_fd, JAIL_FIXFD_VSMWRK);
124	22775	VJ_master(JAIL_MASTER_LOW);
125
126	22775	MCH_Fd_Inherit(heritage.vsm_fd, "VSMW");
127
128	22775	heritage.param = VSMW_Allocf(mgt_vsmw, NULL, VSM_CLASS_PARAM,
129		sizeof *heritage.param, "");
130	22775	AN(heritage.param);
131	22775	*heritage.param = mgt_param;
132
133	22775	heritage.panic_str_len = 64 * 1024;
134	45550	heritage.panic_str = VSMW_Allocf(mgt_vsmw, NULL, "Panic",
135	22775	heritage.panic_str_len, "");
136	22775	AN(heritage.panic_str);
137	22775	}
138
139		void
140	22775	mgt_SHM_ChildDestroy(void)
141		{
142
143	22775	closefd(&heritage.vsm_fd);
144	22775	if (!MGT_DO_DEBUG(DBG_VTC_MODE)) {
145	200	VJ_master(JAIL_MASTER_SYSTEM);
146	200	AZ(system("rm -rf " VSM_CHILD_DIRNAME));
147	200	VJ_master(JAIL_MASTER_LOW);
148	200	}
149	22775	VSMW_Free(mgt_vsmw, (void**)&heritage.panic_str);
150	22775	VSMW_Free(mgt_vsmw, (void**)&heritage.param);
151	22775	}