PSARC 2005/754 FMA SNMP Agent

6365742 fault management data needs an SNMP interface
6365743 need 64-bit fmd scheme plugins

1 files changed, 297 insertions, 0 deletions

diff --git a/usr/src/lib/fm/libfmd_snmp/common/scheme.c b/usr/src/lib/fm/libfmd_snmp/common/scheme.c
new file mode 100644
index 0000000000..a357c23e71
--- /dev/null
+++ b/usr/src/lib/fm/libfmd_snmp/common/scheme.c
@@ -0,0 +1,297 @@
+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms of the
+ * Common Development and Distribution License (the "License").
+ * You may not use this file except in compliance with the License.
+ *
+ * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+ * or http://www.opensolaris.org/os/licensing.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ *
+ * When distributing Covered Code, include this CDDL HEADER in each
+ * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+ * If applicable, add the following below this CDDL HEADER, with the
+ * fields enclosed by brackets "[]" replaced with your own identifying
+ * information: Portions Copyright [yyyy] [name of copyright owner]
+ *
+ * CDDL HEADER END
+ */
+
+/*
+ * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
+ * Use is subject to license terms.
+ */
+
+#pragma ident	"%Z%%M%	%I%	%E% SMI"
+
+#include <sys/fm/protocol.h>
+#include <sys/types.h>
+#include <sys/systeminfo.h>
+#include <fm/fmd_snmp.h>
+#include <net-snmp/net-snmp-config.h>
+#include <net-snmp/net-snmp-includes.h>
+#include <net-snmp/agent/net-snmp-agent-includes.h>
+#include <libnvpair.h>
+#include <limits.h>
+#include <strings.h>
+#include <stddef.h>
+#include <unistd.h>
+#include <dlfcn.h>
+#include <errno.h>
+
+#define	SCHEMEDIR_BASE	"/usr/lib/fm/fmd/schemes"
+
+#if defined(__sparcv9)
+#define	DEFAULTSCHEMEDIR	SCHEMEDIR_BASE "/sparcv9"
+#elif defined(__amd64)
+#define	DEFAULTSCHEMEDIR	SCHEMEDIR_BASE "/amd64"
+#else
+#define	DEFAULTSCHEMEDIR	SCHEMEDIR_BASE
+#endif
+
+typedef struct fmd_scheme_ops {
+	int (*sop_init)(void);
+	void (*sop_fini)(void);
+	ssize_t (*sop_nvl2str)(nvlist_t *, char *, size_t);
+} fmd_scheme_ops_t;
+
+typedef struct fmd_scheme_opd {
+	const char *opd_name;		/* symbol name of scheme function */
+	size_t opd_off;			/* offset within fmd_scheme_ops_t */
+} fmd_scheme_opd_t;
+
+typedef struct fmd_scheme {
+	struct fmd_scheme *sch_next;    /* next scheme on list of schemes */
+	char *sch_name;			/* name of this scheme (fmri prefix) */
+	void *sch_dlp;			/* libdl(3DL) shared library handle */
+	int sch_err;			/* if negative entry, errno to return */
+	fmd_scheme_ops_t sch_ops;	/* scheme function pointers */
+} fmd_scheme_t;
+
+static fmd_scheme_t *sch_list;		/* list of cached schemes */
+static char *g_root;			/* fmd root dir */
+
+static long
+fmd_scheme_notsup(void)
+{
+	errno = ENOTSUP;
+	return (-1);
+}
+
+static int
+fmd_scheme_nop(void)
+{
+	return (0);
+}
+
+/*
+ * Default values for the scheme ops.  If a scheme function is not defined in
+ * the module, then this operation is implemented using the default function.
+ */
+static const fmd_scheme_ops_t _fmd_scheme_default_ops = {
+	(int (*)())fmd_scheme_nop,		/* sop_init */
+	(void (*)())fmd_scheme_nop,		/* sop_fini */
+	(ssize_t (*)())fmd_scheme_notsup,	/* sop_nvl2str */
+};
+
+/*
+ * Scheme ops descriptions.  These names and offsets are used by the function
+ * fmd_scheme_rtld_init(), defined below, to load up a fmd_scheme_ops_t.
+ */
+static const fmd_scheme_opd_t _fmd_scheme_ops[] = {
+	{ "fmd_fmri_init", offsetof(fmd_scheme_ops_t, sop_init) },
+	{ "fmd_fmri_fini", offsetof(fmd_scheme_ops_t, sop_fini) },
+	{ "fmd_fmri_nvl2str", offsetof(fmd_scheme_ops_t, sop_nvl2str) },
+	{ NULL, 0 }
+};
+
+static fmd_scheme_t *
+fmd_scheme_create(const char *name)
+{
+	fmd_scheme_t *sp;
+
+	if ((sp = malloc(sizeof (fmd_scheme_t))) == NULL ||
+	    (sp->sch_name = strdup(name)) == NULL) {
+		free(sp);
+		return (NULL);
+	}
+
+	sp->sch_next = sch_list;
+	sp->sch_dlp = NULL;
+	sp->sch_err = 0;
+	sp->sch_ops = _fmd_scheme_default_ops;
+
+	sch_list = sp;
+	return (sp);
+}
+
+static int
+fmd_scheme_rtld_init(fmd_scheme_t *sp)
+{
+	const fmd_scheme_opd_t *opd;
+	void *p;
+
+	for (opd = _fmd_scheme_ops; opd->opd_name != NULL; opd++) {
+		if ((p = dlsym(sp->sch_dlp, opd->opd_name)) != NULL)
+			*(void **)((uintptr_t)&sp->sch_ops + opd->opd_off) = p;
+	}
+
+	return (sp->sch_ops.sop_init());
+}
+
+static fmd_scheme_t *
+fmd_scheme_lookup(const char *dir, const char *name)
+{
+	fmd_scheme_t *sp;
+	char path[PATH_MAX];
+
+	for (sp = sch_list; sp != NULL; sp = sp->sch_next) {
+		if (strcmp(name, sp->sch_name) == 0)
+			return (sp);
+	}
+
+	if ((sp = fmd_scheme_create(name)) == NULL)
+		return (NULL); /* errno is set for us */
+
+	(void) snprintf(path, sizeof (path), "%s%s/%s.so",
+	    g_root ? g_root : "", dir, name);
+
+	if (access(path, F_OK) != 0) {
+		sp->sch_err = errno;
+		return (sp);
+	}
+
+	if ((sp->sch_dlp = dlopen(path, RTLD_LOCAL | RTLD_NOW | RTLD_PARENT)) ==
+	    NULL) {
+		sp->sch_err = ELIBACC;
+		return (sp);
+	}
+
+	if (fmd_scheme_rtld_init(sp) != 0) {
+		sp->sch_err = errno;
+		(void) dlclose(sp->sch_dlp);
+		sp->sch_dlp = NULL;
+	}
+
+	return (sp);
+}
+
+char *
+sunFm_nvl2str(nvlist_t *nvl)
+{
+	fmd_scheme_t *sp;
+	char c, *name, *s = NULL;
+	ssize_t len;
+
+	if (nvlist_lookup_string(nvl, FM_FMRI_SCHEME, &name) != 0) {
+		DEBUGMSGTL((MODNAME_STR, "fmri does not contain required "
+		    "'%s' nvpair\n", FM_FMRI_SCHEME));
+		return (NULL);
+	}
+
+	if ((sp = fmd_scheme_lookup(DEFAULTSCHEMEDIR, name)) == NULL ||
+	    sp->sch_dlp == NULL || sp->sch_err != 0) {
+		const char *msg =
+		    sp->sch_err == ELIBACC ? dlerror() : strerror(sp->sch_err);
+		DEBUGMSGTL((MODNAME_STR, "cannot init '%s' scheme library to "
+		    "format fmri: %s\n", name, msg ? msg : "unknown error"));
+		return (NULL);
+	}
+
+	if ((len = sp->sch_ops.sop_nvl2str(nvl, &c, sizeof (c))) == -1 ||
+	    (s = malloc(len + 1)) == NULL ||
+	    sp->sch_ops.sop_nvl2str(nvl, s, len + 1) == -1) {
+		DEBUGMSGTL((MODNAME_STR, "cannot format fmri using scheme '%s'",
+		    name));
+		free(s);
+		return (NULL);
+	}
+
+	return (s);
+}
+
+void *
+fmd_fmri_alloc(size_t size)
+{
+	return (malloc(size));
+}
+
+void *
+fmd_fmri_zalloc(size_t size)
+{
+	void *data;
+
+	if ((data = malloc(size)) != NULL)
+		bzero(data, size);
+
+	return (data);
+}
+
+/*ARGSUSED*/
+void
+fmd_fmri_free(void *data, size_t size)
+{
+	free(data);
+}
+
+int
+fmd_fmri_error(int err)
+{
+	errno = err;
+	return (-1);
+}
+
+char *
+fmd_fmri_strescape(const char *s)
+{
+	return (strdup(s));
+}
+
+char *
+fmd_fmri_strdup(const char *s)
+{
+	return (strdup(s));
+}
+
+void
+fmd_fmri_strfree(char *s)
+{
+	free(s);
+}
+
+const char *
+fmd_fmri_get_rootdir(void)
+{
+	return (g_root ? g_root : "");
+}
+
+const char *
+fmd_fmri_get_platform(void)
+{
+	static char platform[MAXNAMELEN];
+
+	if (platform[0] == '\0')
+		(void) sysinfo(SI_PLATFORM, platform, sizeof (platform));
+
+	return (platform);
+}
+
+uint64_t
+fmd_fmri_get_drgen(void)
+{
+	return (0);
+}
+
+int
+fmd_fmri_set_errno(int err)
+{
+	errno = err;
+	return (-1);
+}
+
+void
+fmd_fmri_warn(const char *format, ...)
+{
+}