config_admin.c revision 9595f109a086b122e563aa9b0a4ec2304944f3de
/*
* 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
*/
/* Portions Copyright 2005 Cyril Plisko */
/*
* Copyright 2008 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <locale.h>
#include <langinfo.h>
#include <time.h>
#if !defined(DEBUG)
#define NDEBUG 1
#else
#undef NDEBUG
#endif
#include <assert.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/param.h>
#include <dlfcn.h>
#include <synch.h>
#include <sys/systeminfo.h>
#include <sys/sunddi.h>
#include <libdevinfo.h>
#include <unistd.h>
#include <stdarg.h>
#include <limits.h>
#include <ftw.h>
#include <ctype.h>
#define CFGA_PLUGIN_LIB
#include <config_admin.h>
/* Limit size of sysinfo return */
#define SYSINFO_LENGTH 256
/*
* Attachment point specifier types.
*/
typedef enum {
UNKNOWN_AP,
LOGICAL_LINK_AP,
LOGICAL_DRV_AP,
PHYSICAL_AP,
AP_TYPE
} cfga_ap_types_t;
static char *listopt_array[] = {
#define LISTOPT_CLASS 0
"class",
NULL
};
typedef struct {
int v_min; /* Min acceptable version */
int v_max; /* Max acceptable version */
} vers_req_t;
#define INVALID_VERSION -1
#define VALID_HSL_VERS(v) (((v) >= CFGA_HSL_V1) && \
((v) <= CFGA_HSL_VERS))
/*
* Incomplete definition
*/
struct cfga_vers_ops;
/*
* Structure that contains plugin library information.
*/
typedef struct plugin_lib {
struct plugin_lib *next; /* pointer to next */
mutex_t lock; /* protects refcnt */
int refcnt; /* reference count */
void *handle; /* handle from dlopen */
cfga_err_t (*cfga_change_state_p)();
cfga_err_t (*cfga_private_func_p)();
cfga_err_t (*cfga_test_p)();
cfga_err_t (*cfga_stat_p)();
cfga_err_t (*cfga_list_p)();
cfga_err_t (*cfga_help_p)();
int (*cfga_ap_id_cmp_p)();
cfga_err_t (*cfga_list_ext_p)(); /* For V2 plug-ins only */
int plugin_vers; /* actual plugin version */
struct cfga_vers_ops *vers_ops; /* version dependant routines */
char libpath[MAXPATHLEN]; /* full pathname to lib */
} plugin_lib_t;
static plugin_lib_t plugin_list;
typedef struct lib_cache {
struct lib_cache *lc_next;
plugin_lib_t *lc_libp;
char *lc_ap_id;
char *lc_ap_physical; /* physical ap_id */
char *lc_ap_logical; /* logical ap_id */
} lib_cache_t;
static lib_cache_t *lib_cache;
static mutex_t lib_cache_lock;
/*
* Library locator data struct - used to pass down through the device
* tree walking code.
*/
typedef struct lib_locator {
char ap_base[MAXPATHLEN];
char ap_logical[CFGA_LOG_EXT_LEN];
char ap_physical[CFGA_PHYS_EXT_LEN];
char ap_class[CFGA_CLASS_LEN];
char pathname[MAXPATHLEN];
plugin_lib_t *libp;
cfga_err_t status;
vers_req_t vers_req; /* plug-in version required */
} lib_loc_t;
/*
* linked list of cfga_stat_data structs - used for
* config_list
*/
typedef struct stat_data_list {
struct stat_data_list *next;
cfga_stat_data_t stat_data;
} stat_data_list_t;
/*
* linked list of arrays. Each array represents a bunch
* of list_data_t structures returned by a single call
* to a plugin's cfga_list_ext() routine.
*/
typedef struct array_list {
struct array_list *next;
cfga_list_data_t *array;
int nelem;
} array_list_t;
/*
* encapsulate config_list args to get them through the tree
* walking code
*/
typedef struct list_stat {
const char *opts; /* Hardware specific options */
char **errstr;
cfga_flags_t flags;
int *countp; /* Total number of list and stat structures */
stat_data_list_t *sdl; /* Linked list of stat structures */
array_list_t *al; /* Linked list of arrays of list structures */
vers_req_t use_vers; /* plugin versions to be stat'ed */
} list_stat_t;
/*
* Internal operations for libcfgadm which are version dependant
*/
struct cfga_vers_ops {
cfga_err_t (*resolve_lib)(plugin_lib_t *libp);
cfga_err_t (*stat_plugin)(list_stat_t *, lib_loc_t *, char **errstring);
cfga_err_t (*mklog)(di_node_t, di_minor_t, plugin_lib_t *,
lib_loc_t *liblocp);
cfga_err_t (*get_cond)(lib_loc_t *, cfga_cond_t *, char **);
};
/*
* Lock to protect list of libraries
*/
static mutex_t plugin_list_lock;
/*
* Forward declarations
*/
static const char *__config_strerror(cfga_err_t);
static void *config_calloc_check(size_t, size_t, char **);
static cfga_err_t resolve_lib_ref(plugin_lib_t *, lib_loc_t *);
static cfga_err_t config_get_lib(const char *, lib_loc_t *, char **);
static int check_ap(di_node_t, di_minor_t, void *);
static int check_ap_phys(di_node_t, di_minor_t, void *);
static cfga_err_t find_ap_common(lib_loc_t *libloc_p, const char *rootpath,
int (*fcn)(di_node_t node, di_minor_t minor, void *arg), char **errstring);
static plugin_lib_t *lib_in_list(char *);
static cfga_err_t load_lib(di_node_t, di_minor_t, lib_loc_t *);
extern void bcopy(const void *, void *, size_t);
static void config_err(int, int, char **);
static void hold_lib(plugin_lib_t *);
static void rele_lib(plugin_lib_t *);
static cfga_err_t parse_listopt(char *listopts, char **classpp,
char **errstring);
static cfga_err_t list_common(list_stat_t *lstatp, const char *class);
static int do_list_common(di_node_t node, di_minor_t minor, void *arg);
static cfga_err_t stat_common(int num_ap_ids, char *const *ap_ids,
const char *class, list_stat_t *lstatp);
static cfga_err_t null_resolve(plugin_lib_t *libp);
static cfga_err_t resolve_v1(plugin_lib_t *libp);
static cfga_err_t resolve_v2(plugin_lib_t *libp);
static cfga_err_t mklog_common(di_node_t node, di_minor_t minor,
lib_loc_t *liblocp, size_t len);
static cfga_err_t null_mklog(di_node_t node, di_minor_t minor,
plugin_lib_t *libp, lib_loc_t *liblocp);
static cfga_err_t mklog_v1(di_node_t node, di_minor_t minor,
plugin_lib_t *libp, lib_loc_t *liblocp);
static cfga_err_t mklog_v2(di_node_t node, di_minor_t minor,
plugin_lib_t *libp, lib_loc_t *liblocp);
static cfga_err_t null_stat_plugin(list_stat_t *lstatp, lib_loc_t *libloc_p,
char **errstring);
static cfga_err_t stat_plugin_v2(list_stat_t *lstat, lib_loc_t *libloc_p,
char **errstring);
static cfga_err_t stat_plugin_v1(list_stat_t *lstat, lib_loc_t *libloc_p,
char **errstring);
static cfga_err_t null_get_cond(lib_loc_t *liblocp, cfga_cond_t *condp,
char **errstring);
static cfga_err_t get_cond_v1(lib_loc_t *liblocp, cfga_cond_t *condp,
char **errstring);
static cfga_err_t get_cond_v2(lib_loc_t *liblocp, cfga_cond_t *condp,
char **errstring);
static cfga_err_t realloc_data(cfga_stat_data_t **ap_id_list,
int *nlistp, list_stat_t *lstatp);
static cfga_err_t realloc_data_ext(cfga_list_data_t **ap_id_list,
int *nlistp, list_stat_t *lstatp);
static void stat_to_list(cfga_list_data_t *lp, cfga_stat_data_t *statp);
static void lstat_free(list_stat_t *lstatp);
static cfga_ap_types_t find_arg_type(const char *ap_id);
static int compat_plugin(vers_req_t *reqp, int plugin_vers);
static cfga_err_t check_flags(cfga_flags_t flags, cfga_flags_t mask,
char **errstring);
static cfga_err_t check_apids(int num_ap_ids, char *const *ap_ids,
char **errstring);
static char *get_class(di_minor_t minor);
static cfga_err_t split_apid(char *ap_id, char **dyncompp, char **errstring);
static void append_dyn(char *buf, const char *dyncomp, size_t blen);
static int default_ap_id_cmp(const char *ap_id1, const char *ap_id2);
static void destroy_cache();
/*
* Plugin library search path helpers
*/
#define LIB_PATH_BASE1 "/usr/platform/"
#define LIB_PATH_BASE2 "/usr"
#if defined(__sparcv9)
#define LIB_PATH_MIDDLE "/lib/cfgadm/sparcv9/"
#elif defined(__amd64)
#define LIB_PATH_MIDDLE "/lib/cfgadm/amd64/"
#else
#define LIB_PATH_MIDDLE "/lib/cfgadm/"
#endif
#define LIB_PATH_TAIL ".so.1"
#if !defined(TEXT_DOMAIN)
#define TEXT_DOMAIN "SYS_TEST"
#endif
/*
* Defined constants
*/
#define DEVICES_DIR "/devices"
#define DOT_DOT_DEVICES "../devices"
#define CFGA_DEV_DIR "/dev/cfg"
#define SLASH "/"
#define S_FREE(x) (((x) != NULL) ? (free(x), (x) = NULL) : (void *)0)
#define GET_DYN(a) (strstr((a), CFGA_DYN_SEP))
#define CFGA_NO_CLASS "none"
/*
* Error strings
*/
#define DI_INIT_FAILED 1
#define ALLOC_FAILED 2
#define INVALID_ARGS 3
static char *
err_strings[] = {
NULL,
"Device library initialize failed",
"Memory allocation failed",
"Invalid argument(s)"
};
static const char err_sep[] = ": ";
/*
* Table of version dependant routines
*/
static struct cfga_vers_ops cfga_vers_ops[CFGA_HSL_VERS + 1] = {
{null_resolve, null_stat_plugin, null_mklog, null_get_cond },
{resolve_v1, stat_plugin_v1, mklog_v1, get_cond_v1 },
{resolve_v2, stat_plugin_v2, mklog_v2, get_cond_v2 }
};
#define VERS_ARRAY_SZ (sizeof (cfga_vers_ops)/sizeof (cfga_vers_ops[0]))
/*
* Public interfaces for libcfgadm, as documented in config_admin.3x
*/
/*
* config_change_state
*/
cfga_err_t
config_change_state(
cfga_cmd_t state_change_cmd,
int num_ap_ids,
char *const *ap_id,
const char *options,
struct cfga_confirm *confp,
struct cfga_msg *msgp,
char **errstring,
cfga_flags_t flags)
{
/*
* for each arg -
* load hs library,
* if force
* call cfga_state_change_func
* return status
* else
* call it's cfga_stat
* check condition
* call cfga_state_change_func
* return status
*/
int i;
lib_loc_t libloc;
plugin_lib_t *libp;
cfga_cond_t cond;
cfga_err_t retval = CFGA_OK;
/* Sanity checks */
if (state_change_cmd == CFGA_CMD_NONE)
return (retval);
if ((state_change_cmd < CFGA_CMD_NONE) ||
(state_change_cmd > CFGA_CMD_UNCONFIGURE))
return (CFGA_INVAL);
if (errstring != NULL) {
*errstring = NULL;
}
if (check_flags(flags, CFGA_FLAG_FORCE | CFGA_FLAG_VERBOSE, errstring)
!= CFGA_OK) {
return (CFGA_ERROR);
}
if (check_apids(num_ap_ids, ap_id, errstring) != CFGA_OK) {
return (CFGA_ERROR);
}
/*
* operate on each ap_id
*/
for (i = 0; (i < num_ap_ids) && (retval == CFGA_OK); i++) {
libloc.libp = NULL;
if ((retval = config_get_lib(ap_id[i], &libloc, errstring)) !=
CFGA_OK) {
break;
}
libp = libloc.libp;
if ((flags & CFGA_FLAG_FORCE) ||
(state_change_cmd == CFGA_CMD_UNLOAD) ||
(state_change_cmd == CFGA_CMD_DISCONNECT) ||
(state_change_cmd == CFGA_CMD_UNCONFIGURE)) {
errno = 0;
retval = (*libp->cfga_change_state_p)
(state_change_cmd, libloc.ap_physical, options,
confp, msgp, errstring, flags);
} else {
/*
* Need to check condition before proceeding in
* the "configure direction"
*/
if ((retval = libp->vers_ops->get_cond(&libloc, &cond,
errstring)) != CFGA_OK) {
break;
}
if (cond == CFGA_COND_OK || cond == CFGA_COND_UNKNOWN) {
errno = 0;
retval =
(*libp->cfga_change_state_p)(
state_change_cmd,
libloc.ap_physical, options,
confp, msgp, errstring,
flags);
} else {
retval = CFGA_INSUFFICENT_CONDITION;
}
}
rele_lib(libp);
}
return (retval);
}
/*
* config_private_func
*/
cfga_err_t
config_private_func(
const char *function,
int num_ap_ids,
char *const *ap_ids,
const char *options,
struct cfga_confirm *confp,
struct cfga_msg *msgp,
char **errstring,
cfga_flags_t flags)
{
int i;
lib_loc_t libloc;
cfga_err_t retval = CFGA_OK;
if (errstring != NULL) {
*errstring = NULL;
}
if (check_flags(flags, CFGA_FLAG_FORCE | CFGA_FLAG_VERBOSE, errstring)
!= CFGA_OK) {
return (CFGA_ERROR);
}
if (check_apids(num_ap_ids, ap_ids, errstring) != CFGA_OK) {
return (CFGA_ERROR);
}
/*
* operate on each ap_id
*/
for (i = 0; (i < num_ap_ids) && (retval == CFGA_OK); i++) {
libloc.libp = NULL;
if ((retval = config_get_lib(ap_ids[i], &libloc, errstring)) !=
CFGA_OK) {
return (retval);
}
errno = 0;
retval = (*libloc.libp->cfga_private_func_p)(function,
libloc.ap_physical, options, confp, msgp, errstring,
flags);
rele_lib(libloc.libp);
}
return (retval);
}
/*
* config_test
*/
cfga_err_t
config_test(
int num_ap_ids,
char *const *ap_ids,
const char *options,
struct cfga_msg *msgp,
char **errstring,
cfga_flags_t flags)
{
int i;
lib_loc_t libloc;
cfga_err_t retval = CFGA_OK;
if (errstring != NULL) {
*errstring = NULL;
}
if (check_flags(flags, CFGA_FLAG_FORCE | CFGA_FLAG_VERBOSE, errstring)
!= CFGA_OK) {
return (CFGA_ERROR);
}
if (check_apids(num_ap_ids, ap_ids, errstring) != CFGA_OK) {
return (CFGA_ERROR);
}
/*
* operate on each ap_id
*/
for (i = 0; (i < num_ap_ids) && (retval == CFGA_OK); i++) {
libloc.libp = NULL;
if ((retval = config_get_lib(ap_ids[i], &libloc, errstring)) !=
CFGA_OK) {
return (retval);
}
errno = 0;
retval = (*libloc.libp->cfga_test_p)(libloc.ap_physical,
options, msgp, errstring, flags);
rele_lib(libloc.libp);
}
return (retval);
}
cfga_err_t
config_stat(
int num_ap_ids,
char *const *ap_ids,
struct cfga_stat_data *buf,
const char *options,
char **errstring)
{
int nstat, n, i;
list_stat_t lstat = {NULL};
cfga_err_t rc = CFGA_OK;
if (check_apids(num_ap_ids, ap_ids, errstring) != CFGA_OK) {
return (CFGA_ERROR);
}
/*
* V1 entry points don't support dynamic attachment points
*/
for (i = 0; i < num_ap_ids; i++) {
if (GET_DYN(ap_ids[i]) != NULL) {
return (CFGA_APID_NOEXIST);
}
}
nstat = n = 0;
lstat.countp = &nstat;
lstat.opts = options;
lstat.errstr = errstring;
/*
* This is a V1 interface which can use only V1 plugins
*/
lstat.use_vers.v_max = lstat.use_vers.v_min = CFGA_HSL_V1;
rc = stat_common(num_ap_ids, ap_ids, NULL, &lstat);
if (rc == CFGA_OK) {
assert(*lstat.countp == num_ap_ids);
rc = realloc_data(&buf, &n, &lstat);
}
return (rc);
}
/*
* config_list
*/
cfga_err_t
config_list(
struct cfga_stat_data **ap_id_list,
int *nlistp,
const char *options,
char **errstring)
{
int nstat;
list_stat_t lstat = {NULL};
cfga_err_t retval = CFGA_ERROR;
if (errstring != NULL) {
*errstring = NULL;
}
nstat = 0;
lstat.countp = &nstat;
lstat.opts = options;
lstat.errstr = errstring;
/*
* This is a V1 interface which can use only V1 plugins
*/
lstat.use_vers.v_max = lstat.use_vers.v_min = CFGA_HSL_V1;
*ap_id_list = NULL;
*nlistp = 0;
/*
* V1 interfaces don't support prefiltering, no class
* specified.
*/
retval = list_common(&lstat, NULL);
if (retval == CFGA_OK) {
retval = realloc_data(ap_id_list, nlistp, &lstat);
}
assert((ap_id_list != NULL && *nlistp != 0) ||
(ap_id_list == NULL && *nlistp == 0));
if (retval == CFGA_OK && *nlistp == 0) {
return (CFGA_NOTSUPP);
} else {
return (retval);
}
}
/*
* config_list_ext
*/
cfga_err_t
config_list_ext(
int num_ap_ids,
char *const *ap_ids,
struct cfga_list_data **ap_id_list,
int *nlistp,
const char *options,
const char *listopts,
char **errstring,
cfga_flags_t flags)
{
int nstat, list, prefilter;
list_stat_t lstat = {NULL};
char *class;
cfga_err_t rc = CFGA_ERROR;
*nlistp = 0;
*ap_id_list = NULL;
if (errstring != NULL) {
*errstring = NULL;
}
if (check_flags(flags, CFGA_FLAG_LIST_ALL, errstring) != CFGA_OK) {
return (CFGA_ERROR);
}
class = NULL;
if ((rc = parse_listopt((char *)listopts, &class, errstring))
!= CFGA_OK) {
return (rc);
}
prefilter = (class == NULL) ? 0 : 1;
nstat = 0;
lstat.countp = &nstat;
lstat.opts = options;
lstat.errstr = errstring;
lstat.flags = flags;
/*
* We support both V1 and V2 plugins through this entry
* point.
*/
lstat.use_vers.v_min = CFGA_HSL_V1;
lstat.use_vers.v_max = CFGA_HSL_V2;
list = 0;
if (num_ap_ids == 0 && ap_ids == NULL) {
/*
* discover and stat all attachment points
*/
list = 1;
rc = list_common(&lstat, class);
} else if (num_ap_ids > 0 && ap_ids != NULL) {
/*
* Stat specified attachment points. With dynamic expansion
* more data may be returned than was specified by user.
*/
rc = stat_common(num_ap_ids, ap_ids, class, &lstat);
} else {
rc = CFGA_ERROR;
}
S_FREE(class);
if (rc != CFGA_OK) {
return (rc);
}
rc = realloc_data_ext(ap_id_list, nlistp, &lstat);
assert((ap_id_list != NULL && *nlistp != 0) ||
(ap_id_list == NULL && *nlistp == 0));
/*
* For the list command notify user if no attachment
* point is found in the system.
*
*/
if (list && rc == CFGA_OK && *nlistp == 0) {
/*
* If attachment points are being prefiltered, absence of data
* does not imply that config. admin. is not
* supported by the system.
*/
if (prefilter) {
/*
* Prefiltering: requested class is absent
*/
return (CFGA_APID_NOEXIST);
} else {
/*
* No attachment points in system
*/
return (CFGA_NOTSUPP);
}
} else {
return (rc);
}
}
/*
* config_unload_libs
*
* Attempts to remove all libs on the plugin list.
*/
void
config_unload_libs()
{
plugin_lib_t *libp, *prev = &plugin_list, *next = NULL;
/* destroy cache entries to remove refcnt agains plugins */
destroy_cache();
(void) mutex_lock(&plugin_list_lock);
for (libp = plugin_list.next; libp != NULL; libp = next) {
next = libp->next;
(void) mutex_lock(&libp->lock);
if (libp->refcnt) {
(void) mutex_unlock(&libp->lock);
prev = libp;
continue;
}
(void) mutex_unlock(&libp->lock);
prev->next = next;
(void) dlclose(libp->handle);
(void) mutex_destroy(&libp->lock);
free(libp);
}
(void) mutex_unlock(&plugin_list_lock);
}
/*
* config_ap_id_cmp
*/
int
config_ap_id_cmp(
const cfga_ap_log_id_t ap1,
const cfga_ap_log_id_t ap2)
{
int ret;
lib_loc_t libloc;
char apstat1[CFGA_PHYS_EXT_LEN];
char apstat2[CFGA_PHYS_EXT_LEN];
char *sep1, *sep2;
/*
* Extract static ap_ids
*/
(void) strlcpy(apstat1, ap1, sizeof (apstat1));
(void) strlcpy(apstat2, ap2, sizeof (apstat2));
sep1 = GET_DYN(apstat1);
sep2 = GET_DYN(apstat2);
if (sep1)
*sep1 = '\0';
if (sep2)
*sep2 = '\0';
/*
* Use the default comparator for static ap_ids
*/
ret = default_ap_id_cmp(apstat1, apstat2);
if (ret)
return (ret);
/*
* static components match. They belong to
* the same static ap_id. Check if both are dynamic
* If not, static < dynamic.
*/
if ((sep1 == NULL) ^ (sep2 == NULL))
return (sep1 ? 1 : -1);
/*
* If both are static, then ap1 = ap2
*/
if (sep1 == NULL)
return (0);
/*
* Both are dynamic and belong to same static ap_id.
* Use the plugin comparator
*/
libloc.libp = NULL;
if (config_get_lib(ap1, &libloc, NULL) != CFGA_OK) {
return (strncmp(sep1, sep2, CFGA_PHYS_EXT_LEN));
}
ret = (*libloc.libp->cfga_ap_id_cmp_p)(ap1, ap2);
rele_lib(libloc.libp);
return (ret);
}
/*
* config_strerror
*/
const char *
config_strerror(cfga_err_t cfgerrnum)
{
const char *ep = NULL;
if ((cfgerrnum < CFGA_OK) || (cfgerrnum > CFGA_ATTR_INVAL))
return (NULL);
ep = __config_strerror(cfgerrnum);
return ((ep != NULL) ? dgettext(TEXT_DOMAIN, ep) : NULL);
}
/*
* config_help
*/
cfga_err_t
config_help(
int num_ap_ids,
char *const *ap_ids,
struct cfga_msg *msgp,
const char *options,
cfga_flags_t flags)
{
int i;
lib_loc_t libloc;
cfga_err_t retval = CFGA_OK;
if (check_flags(flags, CFGA_FLAG_FORCE | CFGA_FLAG_VERBOSE, NULL)
!= CFGA_OK) {
return (CFGA_ERROR);
}
if (num_ap_ids < 0) {
return (CFGA_ERROR);
}
if (num_ap_ids > 0 && ap_ids == NULL) {
return (CFGA_ERROR);
}
/*
* operate on each ap_id
*/
for (i = 0; (i < num_ap_ids) && (retval == CFGA_OK); i++) {
libloc.libp = NULL;
if ((retval = config_get_lib(ap_ids[i], &libloc,
NULL)) != CFGA_OK) {
return (retval);
}
errno = 0;
retval = (*libloc.libp->cfga_help_p)(msgp, options, flags);
rele_lib(libloc.libp);
}
return (retval);
}
/*
* Private support routines for the public interfaces
*/
static const char *
__config_strerror(cfga_err_t cfgerrnum)
{
const char *ep = NULL;
switch (cfgerrnum) {
case CFGA_OK:
ep = "Configuration operation succeeded";
break;
case CFGA_NACK:
ep = "Configuration operation cancelled";
break;
case CFGA_INVAL:
ep = "Configuration operation invalid";
break;
case CFGA_NOTSUPP:
ep = "Configuration administration not supported";
break;
case CFGA_OPNOTSUPP:
ep = "Configuration operation not supported";
break;
case CFGA_PRIV:
ep = "Insufficient privileges";
break;
case CFGA_BUSY:
ep = "Component system is busy, try again";
break;
case CFGA_SYSTEM_BUSY:
ep = "System is busy, try again";
break;
case CFGA_DATA_ERROR:
ep = "Data error";
break;
case CFGA_LIB_ERROR:
ep = "Library error";
break;
case CFGA_NO_LIB:
ep = "No Library found";
break;
case CFGA_INSUFFICENT_CONDITION:
ep = "Insufficient condition";
break;
case CFGA_ERROR:
ep = "Hardware specific failure";
break;
case CFGA_APID_NOEXIST:
ep = "Attachment point not found";
break;
case CFGA_ATTR_INVAL:
ep = "No attachment point with specified attributes found";
break;
default:
ep = NULL;
break;
}
return (ep);
}
/*
* listopts is a string in the getsubopt(3C) style:
* name1=value1,name2=value2,
*/
static cfga_err_t
parse_listopt(char *listopts, char **classpp, char **errstring)
{
char *bufp, *optp, *val = NULL;
cfga_err_t rc = CFGA_ERROR;
*classpp = NULL;
/*
* NULL is a legal value for listopts
*/
if (listopts == NULL) {
return (CFGA_OK);
}
if ((bufp = config_calloc_check(1, strlen(listopts) + 1, errstring))
== NULL) {
return (CFGA_LIB_ERROR);
}
(void) strcpy(bufp, listopts);
optp = bufp; /* getsubopt() modifies its argument */
while (*optp != '\0') {
switch (getsubopt(&optp, listopt_array, &val)) {
case LISTOPT_CLASS:
if (val == NULL || *classpp != NULL) {
rc = CFGA_ERROR;
goto out;
}
if ((*classpp = config_calloc_check(1, strlen(val) + 1,
errstring)) == NULL) {
rc = CFGA_LIB_ERROR;
goto out;
}
(void) strcpy(*classpp, val);
break;
default:
rc = CFGA_ERROR;
goto out;
}
}
rc = CFGA_OK;
/*FALLTHRU*/
out:
S_FREE(bufp);
if (rc != CFGA_OK) {
S_FREE(*classpp);
}
return (rc);
}
/*ARGSUSED*/
static cfga_err_t
null_mklog(
di_node_t node,
di_minor_t minor,
plugin_lib_t *libp,
lib_loc_t *liblocp)
{
return (CFGA_OK);
}
static cfga_err_t
mklog_v1(
di_node_t node,
di_minor_t minor,
plugin_lib_t *libp,
lib_loc_t *liblocp)
{
const size_t len = CFGA_AP_LOG_ID_LEN;
assert(len <= sizeof (liblocp->ap_logical));
if (libp->plugin_vers != CFGA_HSL_V1) {
return (CFGA_LIB_ERROR);
}
return (mklog_common(node, minor, liblocp, len));
}
/*
* Obtain the devlink from a /devices path
*/
static int
get_link(di_devlink_t devlink, void *arg)
{
char *linkp = (char *)arg;
(void) snprintf(linkp, CFGA_LOG_EXT_LEN, "%s",
di_devlink_path(devlink));
return (DI_WALK_TERMINATE);
}
static cfga_err_t
mklog_v2(
di_node_t node,
di_minor_t minor,
plugin_lib_t *libp,
lib_loc_t *liblocp)
{
const size_t len = CFGA_LOG_EXT_LEN;
di_devlink_handle_t hdl;
assert(len <= sizeof (liblocp->ap_logical));
if (libp->plugin_vers != CFGA_HSL_V2) {
return (CFGA_LIB_ERROR);
}
/* open devlink database */
if ((hdl = di_devlink_init(NULL, 0)) == NULL) {
return (CFGA_LIB_ERROR);
}
liblocp->ap_logical[0] = '\0';
(void) di_devlink_walk(hdl, NULL,
liblocp->ap_physical + strlen(DEVICES_DIR),
DI_PRIMARY_LINK, (void *)liblocp->ap_logical, get_link);
(void) di_devlink_fini(&hdl);
if (liblocp->ap_logical[0] != '\0')
return (CFGA_OK);
return (mklog_common(node, minor, liblocp, len));
}
/*
* mklog_common - make a logical name from the driver and instance
*/
static cfga_err_t
mklog_common(
di_node_t node,
di_minor_t minor,
lib_loc_t *libloc_p,
size_t len)
{
int inst;
char *drv, *minor_name;
drv = di_driver_name(node);
inst = di_instance(node);
minor_name = di_minor_name(minor);
errno = 0;
if (drv != NULL && inst != -1 && minor_name != NULL &&
snprintf(libloc_p->ap_logical, len, "%s%d:%s", drv, inst,
minor_name) < len) { /* snprintf returns strlen */
return (CFGA_OK);
}
return (CFGA_LIB_ERROR);
}
/*
* resolve_lib_ref - relocate to use plugin lib
*/
static cfga_err_t
resolve_lib_ref(
plugin_lib_t *libp,
lib_loc_t *libloc_p)
{
void *sym;
void *libhdlp = libp->handle;
int plug_vers;
if ((sym = dlsym(libhdlp, "cfga_version")) == NULL) {
/*
* Version symbol not defined, must be the first version
*/
plug_vers = CFGA_HSL_V1;
} else {
plug_vers = *((int *)sym);
}
/*
* Check if plugin version matches request.
*/
if (!compat_plugin(&libloc_p->vers_req, plug_vers)) {
return (CFGA_NO_LIB);
}
/*
* Record the plugin version and setup version dependant routines
*/
assert(plug_vers < VERS_ARRAY_SZ);
libp->plugin_vers = plug_vers;
libp->vers_ops = &cfga_vers_ops[plug_vers];
/* resolve symbols common to all versions */
if ((sym = dlsym(libhdlp, "cfga_change_state")) == NULL) {
perror("dlsym: cfga_change_state");
return (CFGA_LIB_ERROR);
} else
libp->cfga_change_state_p = (cfga_err_t (*)(cfga_cmd_t,
const char *, const char *, struct cfga_confirm *,
struct cfga_msg *, char **, cfga_flags_t)) sym;
if ((sym = dlsym(libhdlp, "cfga_private_func")) == NULL) {
perror("dlsym: cfga_private_func");
return (CFGA_LIB_ERROR);
} else
libp->cfga_private_func_p = (cfga_err_t (*)(const char *,
const char *, const char *, struct cfga_confirm *,
struct cfga_msg *, char **, cfga_flags_t))sym;
if ((sym = dlsym(libhdlp, "cfga_test")) == NULL) {
perror("dlsym: cfga_test");
return (CFGA_LIB_ERROR);
} else
libp->cfga_test_p = (cfga_err_t (*)(const char *, const char *,
struct cfga_msg *, char **, cfga_flags_t))sym;
if ((sym = dlsym(libhdlp, "cfga_help")) == NULL) {
perror("dlsym: cfga_help");
return (CFGA_LIB_ERROR);
} else
libp->cfga_help_p = (cfga_err_t (*)(struct cfga_msg *,
const char *, cfga_flags_t))sym;
if ((sym = dlsym(libhdlp, "cfga_ap_id_cmp")) == NULL) {
libp->cfga_ap_id_cmp_p = default_ap_id_cmp;
} else
libp->cfga_ap_id_cmp_p = (int (*)(const
cfga_ap_log_id_t, const cfga_ap_log_id_t))sym;
/* Resolve version specific symbols */
return (libp->vers_ops->resolve_lib(libp));
}
/*ARGSUSED*/
static cfga_err_t
null_resolve(plugin_lib_t *libp)
{
return (CFGA_OK);
}
static cfga_err_t
resolve_v1(plugin_lib_t *libp)
{
void *sym, *libhdlp = libp->handle;
if (libp->plugin_vers != CFGA_HSL_V1) {
return (CFGA_NO_LIB);
}
if ((sym = dlsym(libhdlp, "cfga_stat")) == NULL) {
perror("dlsym: cfga_stat");
return (CFGA_LIB_ERROR);
} else
libp->cfga_stat_p = (cfga_err_t (*)(const char *,
struct cfga_stat_data *, const char *,
char **))sym;
if ((sym = dlsym(libhdlp, "cfga_list")) == NULL) {
perror("dlsym: cfga_list");
return (CFGA_LIB_ERROR);
} else
libp->cfga_list_p = (cfga_err_t (*)(struct cfga_stat_data **,
int *, const char *, char **))sym;
return (CFGA_OK);
}
static cfga_err_t
resolve_v2(plugin_lib_t *libp)
{
void *sym;
if (libp->plugin_vers != CFGA_HSL_V2) {
return (CFGA_NO_LIB);
}
if ((sym = dlsym(libp->handle, "cfga_list_ext")) == NULL) {
perror("dlsym: cfga_list_ext");
return (CFGA_LIB_ERROR);
} else {
libp->cfga_list_ext_p = (cfga_err_t (*)(const char *,
struct cfga_list_data **, int *, const char *,
const char *, char **, cfga_flags_t))sym;
return (CFGA_OK);
}
}
/*
* config_calloc_check - perform allocation, check result and
* set error string
*/
static void *
config_calloc_check(
size_t nelem,
size_t elsize,
char **errstring)
{
void *p;
p = calloc(nelem, elsize);
if (p == NULL) {
config_err(0, ALLOC_FAILED, errstring);
}
return (p);
}
/*
* config_get_lib - given an ap_id find the library name
* If successful, the plugin library is held.
*/
static cfga_err_t
config_get_lib(
const char *ap_id,
lib_loc_t *lib_loc_p,
char **errstring)
{
char *dyncomp, path[PATH_MAX];
char *apdup;
cfga_ap_types_t type = UNKNOWN_AP;
cfga_err_t ret = CFGA_ERROR;
if (ap_id == NULL) {
config_err(0, INVALID_ARGS, errstring);
return (ret);
}
lib_loc_p->libp = NULL;
if ((apdup = config_calloc_check(1, strlen(ap_id) + 1, errstring))
== NULL) {
return (CFGA_LIB_ERROR);
}
(void) strcpy(apdup, ap_id);
/*
* Separate into base and dynamic components
*/
if ((ret = split_apid(apdup, &dyncomp, errstring)) != CFGA_OK) {
goto out;
}
/*
* No upper limit on version
*/
lib_loc_p->vers_req.v_max = CFGA_HSL_VERS;
if (dyncomp != NULL) {
/*
* We need atleast version 2 of the plug-in library
* interface since the ap_id has a dynamic component.
*/
lib_loc_p->vers_req.v_min = CFGA_HSL_V2;
} else {
lib_loc_p->vers_req.v_min = CFGA_HSL_V1;
}
/*
* If the ap_id is a devlink in CFGA_DEV_DIR, follow link
* to get the physical ap_id.
*/
if ((type = find_arg_type(apdup)) == LOGICAL_LINK_AP) {
(void) snprintf(lib_loc_p->ap_base, sizeof (lib_loc_p->ap_base),
"%s%s", CFGA_DEV_DIR SLASH, apdup);
}
path[sizeof (path) - 1] = '\0';
if (type == LOGICAL_LINK_AP && realpath(lib_loc_p->ap_base, path)
!= NULL) {
(void) snprintf(lib_loc_p->ap_base, sizeof (lib_loc_p->ap_base),
"%s", path);
} else {
(void) snprintf(lib_loc_p->ap_base, sizeof (lib_loc_p->ap_base),
"%s", apdup);
}
/*
* find and load the library
* The base component of the ap_id is used to locate the plug-in
*/
if ((type = find_arg_type(lib_loc_p->ap_base)) == PHYSICAL_AP) {
/*
* physical ap_id: Use ap_base as root for tree walk
* A link based apid (logical) will resolve to a physical
* ap_id.
*/
ret = find_ap_common(lib_loc_p, lib_loc_p->ap_base,
check_ap_phys, errstring);
} else if ((type == LOGICAL_DRV_AP) ||
(type == AP_TYPE && dyncomp == NULL)) {
/*
* logical ap_id or ap_type: Use "/" as root for tree walk
* Note: an aptype cannot have a dynamic component
*/
ret = find_ap_common(lib_loc_p, "/", check_ap, errstring);
} else {
ret = CFGA_APID_NOEXIST;
}
if (ret == CFGA_OK) {
#ifndef NDEBUG
/*
* variables used by assert() only which is disabled
* by defining NDEBUG (see top of this file)
*/
plugin_lib_t *libp;
libp = lib_loc_p->libp;
#endif /* NDEBUG */
assert(strcmp(libp->libpath, lib_loc_p->pathname) == 0);
assert(VALID_HSL_VERS(libp->plugin_vers));
/*
* If a dynamic component was present, v1 plug-ins are not
* acceptable.
*/
assert(dyncomp == NULL || libp->plugin_vers >= CFGA_HSL_V2);
/*
* ap_physical is passed to plugins as their ap_id argument.
* Append dynamic component if any.
*/
append_dyn(lib_loc_p->ap_physical, dyncomp,
sizeof (lib_loc_p->ap_physical));
}
/* cleanup */
lib_loc_p->vers_req.v_min = INVALID_VERSION;
lib_loc_p->vers_req.v_max = INVALID_VERSION;
*lib_loc_p->ap_base = '\0';
/*FALLTHRU*/
out:
S_FREE(apdup);
S_FREE(dyncomp);
if (ret != CFGA_OK) {
lib_loc_p->libp = NULL;
}
assert(ret != CFGA_OK || lib_loc_p->libp != NULL);
return (ret);
}
/*
* load_lib - Given a library pathname, create a entry for it
* in the library list, if one does not already exist, and read
* lock it to keep it there.
*/
static cfga_err_t
load_lib(
di_node_t node,
di_minor_t minor,
lib_loc_t *libloc_p)
{
plugin_lib_t *libp, *list_libp;
char *devfs_path;
/*
* lock the library list
*/
(void) mutex_lock(&plugin_list_lock);
/*
* see if lib exist in list, if not, allocate a new one
*/
list_libp = lib_in_list(libloc_p->pathname);
if (list_libp != NULL) {
hold_lib(list_libp);
(void) mutex_unlock(&plugin_list_lock);
/* fill in logical and physical name in libloc_p */
libloc_p->libp = libp = list_libp;
if (libp->vers_ops->mklog(node, minor, libp, libloc_p)
!= CFGA_OK) {
rele_lib(list_libp);
return (CFGA_LIB_ERROR);
}
devfs_path = di_devfs_path(node);
(void) snprintf(libloc_p->ap_physical, MAXPATHLEN, "%s%s:%s",
DEVICES_DIR, devfs_path, di_minor_name(minor));
di_devfs_path_free(devfs_path);
return (CFGA_OK);
}
/* allocate a new plugin_lib_t structure */
libp = config_calloc_check(1, sizeof (plugin_lib_t), NULL);
if (libp == NULL) {
(void) mutex_unlock(&plugin_list_lock);
return (CFGA_LIB_ERROR);
}
(void) snprintf(libp->libpath, sizeof (libp->libpath), "%s",
libloc_p->pathname);
/*
* ensure that the lib is open and linked in
*/
libp->handle = dlopen(libp->libpath, RTLD_NOW);
if (libp->handle == NULL) {
(void) mutex_unlock(&plugin_list_lock);
free(libp);
return (CFGA_NO_LIB);
}
if (resolve_lib_ref(libp, libloc_p) != CFGA_OK ||
libp->vers_ops->mklog(node, minor, libp, libloc_p) != CFGA_OK) {
(void) mutex_unlock(&plugin_list_lock);
(void) dlclose(libp->handle);
free(libp);
return (CFGA_NO_LIB);
}
/*
* link in new entry to the end of list
*/
list_libp = &plugin_list;
while (list_libp->next != NULL)
list_libp = list_libp->next;
libp->next = list_libp->next;
list_libp->next = libp;
/* Initialize refcnt to 1 */
libp->refcnt = 1;
(void) mutex_init(&libp->lock, USYNC_THREAD, NULL);
(void) mutex_unlock(&plugin_list_lock);
/*
* record libp and physical node name in the libloc struct
*/
libloc_p->libp = libp;
devfs_path = di_devfs_path(node);
(void) snprintf(libloc_p->ap_physical, MAXPATHLEN, "%s%s:%s",
DEVICES_DIR, devfs_path, di_minor_name(minor));
di_devfs_path_free(devfs_path);
return (CFGA_OK);
}
#define NUM_LIB_NAMES 2
/*
* find_lib - Given an attachment point node find it's library
*
*/
static cfga_err_t
find_lib(
di_node_t node,
di_minor_t minor,
lib_loc_t *libloc_p)
{
char lib[MAXPATHLEN];
char name[NUM_LIB_NAMES][MAXPATHLEN];
struct stat lib_stat;
void *dlhandle = NULL;
static char plat_name[SYSINFO_LENGTH];
static char machine_name[SYSINFO_LENGTH];
static char arch_name[SYSINFO_LENGTH];
int i = 0;
char *class = NULL, *drv = NULL;
/* Make sure pathname and class is null if we fail */
*libloc_p->ap_class = *libloc_p->pathname = *lib = '\0';
/*
* Initialize machine name and arch name
*/
if (strncmp("", machine_name, MAXPATHLEN) == 0) {
if (sysinfo(SI_PLATFORM, plat_name, SYSINFO_LENGTH) == -1) {
return (CFGA_ERROR);
}
if (sysinfo(SI_ARCHITECTURE, arch_name, SYSINFO_LENGTH) == -1) {
return (CFGA_ERROR);
}
if (sysinfo(SI_MACHINE, machine_name, SYSINFO_LENGTH) == -1) {
return (CFGA_ERROR);
}
}
/*
* Initialize possible library tags.
*/
drv = di_driver_name(node);
class = get_class(minor);
if (drv == NULL || class == NULL) {
return (CFGA_LIB_ERROR);
}
i = 0;
(void) snprintf(&name[i++][0], sizeof (name[0]), "%s", drv);
(void) snprintf(&name[i++][0], sizeof (name[0]), "%s", class);
/*
* Cycle through the array of names to find the library.
*/
for (i = 0; i < NUM_LIB_NAMES; i++) {
/* Attachment points may not have a class (i.e. are generic) */
if (name[i][0] == '\0') {
continue;
}
/*
* Try path based upon platform name
*/
(void) snprintf(lib, sizeof (lib), "%s%s%s%s%s",
LIB_PATH_BASE1, plat_name, LIB_PATH_MIDDLE,
name[i], LIB_PATH_TAIL);
if (stat(lib, &lib_stat) == 0) {
/* file exists, is it a lib */
dlhandle = dlopen(lib, RTLD_LAZY);
if (dlhandle != NULL) {
goto found;
}
}
/*
* Try path based upon machine name
*/
(void) snprintf(lib, sizeof (lib), "%s%s%s%s%s",
LIB_PATH_BASE1, machine_name, LIB_PATH_MIDDLE,
name[i], LIB_PATH_TAIL);
if (stat(lib, &lib_stat) == 0) {
/* file exists, is it a lib */
dlhandle = dlopen(lib, RTLD_LAZY);
if (dlhandle != NULL) {
goto found;
}
}
/*
* Try path based upon arch name
*/
(void) snprintf(lib, sizeof (lib), "%s%s%s%s%s",
LIB_PATH_BASE1, arch_name, LIB_PATH_MIDDLE,
name[i], LIB_PATH_TAIL);
if (stat(lib, &lib_stat) == 0) {
/* file exists, is it a lib */
dlhandle = dlopen(lib, RTLD_LAZY);
if (dlhandle != NULL) {
goto found;
}
}
/*
* Try generic location
*/
(void) snprintf(lib, sizeof (lib), "%s%s%s%s",
LIB_PATH_BASE2, LIB_PATH_MIDDLE, name[i], LIB_PATH_TAIL);
if (stat(lib, &lib_stat) == 0) {
/* file exists, is it a lib */
dlhandle = dlopen(lib, RTLD_LAZY);
if (dlhandle != NULL) {
goto found;
}
}
}
return (CFGA_NO_LIB);
found:
/* we got one! */
(void) snprintf(libloc_p->pathname, sizeof (libloc_p->pathname), "%s",
lib);
(void) dlclose(dlhandle);
/* Record class name (if any) */
(void) snprintf(libloc_p->ap_class, sizeof (libloc_p->ap_class), "%s",
class);
return (CFGA_OK);
}
static cfga_err_t
lookup_cache(lib_loc_t *libloc_p)
{
lib_cache_t *entry;
(void) mutex_lock(&lib_cache_lock);
entry = lib_cache;
while (entry) {
if (strcmp(entry->lc_ap_id, libloc_p->ap_base) == 0) {
plugin_lib_t *libp = entry->lc_libp;
libloc_p->libp = libp;
hold_lib(libp);
(void) strcpy(libloc_p->pathname, libp->libpath);
(void) strcpy(libloc_p->ap_physical,
entry->lc_ap_physical);
(void) strcpy(libloc_p->ap_logical,
entry->lc_ap_logical);
(void) mutex_unlock(&lib_cache_lock);
return (CFGA_OK);
}
entry = entry->lc_next;
}
(void) mutex_unlock(&lib_cache_lock);
return (CFGA_ERROR);
}
static void
update_cache(lib_loc_t *libloc_p)
{
lib_cache_t *entry;
entry = config_calloc_check(1, sizeof (lib_cache_t), NULL);
if (entry == NULL)
return;
entry->lc_ap_id = strdup(libloc_p->ap_base);
entry->lc_ap_physical = strdup(libloc_p->ap_physical);
entry->lc_ap_logical = strdup(libloc_p->ap_logical);
if ((entry->lc_ap_id == NULL) || (entry->lc_ap_physical == NULL) ||
(entry->lc_ap_logical == NULL)) {
free(entry->lc_ap_id);
free(entry->lc_ap_physical);
free(entry->lc_ap_logical);
free(entry);
return;
}
(void) mutex_lock(&lib_cache_lock);
entry->lc_libp = libloc_p->libp;
entry->lc_next = lib_cache;
lib_cache = entry;
hold_lib(entry->lc_libp); /* prevent stale cache */
(void) mutex_unlock(&lib_cache_lock);
}
static void
destroy_cache()
{
lib_cache_t *entry, *next;
(void) mutex_lock(&lib_cache_lock);
entry = lib_cache;
while (entry) {
next = entry->lc_next;
rele_lib(entry->lc_libp);
free(entry->lc_ap_id);
free(entry->lc_ap_physical);
free(entry->lc_ap_logical);
free(entry);
entry = next;
}
(void) mutex_unlock(&lib_cache_lock);
}
/*
* find_ap_common - locate a particular attachment point
*/
static cfga_err_t
find_ap_common(
lib_loc_t *libloc_p,
const char *physpath,
int (*fcn)(di_node_t node, di_minor_t minor, void *arg),
char **errstring)
{
di_node_t rnode, wnode;
char *cp, *rpath;
size_t len;
if (lookup_cache(libloc_p) == CFGA_OK)
return (CFGA_OK);
if ((rpath = config_calloc_check(1, strlen(physpath) + 1,
errstring)) == NULL) {
return (CFGA_LIB_ERROR);
}
(void) strcpy(rpath, physpath);
/* Remove devices prefix (if any) */
len = strlen(DEVICES_DIR);
if (strncmp(rpath, DEVICES_DIR SLASH, len + strlen(SLASH)) == 0) {
(void) memmove(rpath, rpath + len,
strlen(rpath + len) + 1);
}
/* Remove dynamic component if any */
if ((cp = GET_DYN(rpath)) != NULL) {
*cp = '\0';
}
/* Remove minor name (if any) */
if ((cp = strrchr(rpath, ':')) != NULL) {
*cp = '\0';
}
/*
* begin walk of device tree
*/
rnode = di_init("/", DINFOCACHE);
if (rnode)
wnode = di_lookup_node(rnode, rpath);
else
wnode = DI_NODE_NIL;
S_FREE(rpath);
if (wnode == DI_NODE_NIL) {
if (rnode == DI_NODE_NIL) {
config_err(errno, DI_INIT_FAILED, errstring);
return (CFGA_LIB_ERROR);
} else {
/*
* di_lookup_node() may fail because the ap_id
* does not exist
*/
di_fini(rnode);
return (CFGA_APID_NOEXIST);
}
}
libloc_p->libp = NULL;
libloc_p->status = CFGA_APID_NOEXIST;
(void) di_walk_minor(wnode, "ddi_ctl:attachment_point",
DI_CHECK_ALIAS|DI_CHECK_INTERNAL_PATH,
libloc_p, fcn);
di_fini(rnode);
if (libloc_p->libp != NULL) {
update_cache(libloc_p);
return (CFGA_OK);
} else {
return (libloc_p->status);
}
}
/*
* check_ap - called for each attachment point found
*
* This is used in cases where a particular attachment point
* or type of attachment point is specified via a logical name or ap_type.
* Not used for physical names or in the list case with no
* ap's specified.
*/
static int
check_ap(
di_node_t node,
di_minor_t minor,
void *arg)
{
char *cp = NULL;
char aptype[MAXPATHLEN];
char *recep_id = NULL;
char *node_minor;
char *drv_name;
char inst[MAXPATHLEN];
char inst2[MAXPATHLEN];
lib_loc_t *libloc_p;
int comparison_test;
int instance;
cfga_ap_types_t type;
libloc_p = (lib_loc_t *)arg;
(void) snprintf(aptype, sizeof (aptype), "%s", libloc_p->ap_base);
/*
* This routime handles only aptypes and driver based logical apids.
*/
type = find_arg_type(aptype);
if (type == LOGICAL_DRV_AP) {
cp = strchr(aptype, ':');
*cp = '\0';
recep_id = cp+1;
cp--;
while (isdigit(*cp) && cp != aptype)
cp--;
cp++;
(void) snprintf(inst, sizeof (inst), "%s", cp);
*cp = '\0';
} else if (type != AP_TYPE) {
libloc_p->status = CFGA_APID_NOEXIST;
return (DI_WALK_CONTINUE);
}
node_minor = di_minor_name(minor);
drv_name = di_driver_name(node);
instance = di_instance(node);
if (node_minor == NULL || drv_name == NULL || instance == -1) {
libloc_p->status = CFGA_APID_NOEXIST;
return (DI_WALK_CONTINUE);
}
(void) sprintf(inst2, "%d", instance);
/*
* If the base matches driver and instance try and find a lib for it,
* then load it. On any failure we continue the walk.
*
* driver based logical ap_ids are derived from driver name + instance.
* Ap_types are just partial driver names.
*
*/
comparison_test = 0;
if (type == AP_TYPE) {
if (strncmp(aptype, drv_name, strlen(aptype)) == 0) {
comparison_test = 1;
}
} else {
if (strcmp(aptype, drv_name) == 0 &&
strcmp(recep_id, node_minor) == 0 &&
strcmp(inst, inst2) == 0) {
comparison_test = 1;
}
}
if (comparison_test) {
/*
* save the correct type of error so user does not get confused
*/
if (find_lib(node, minor, libloc_p) != CFGA_OK) {
libloc_p->status = CFGA_NO_LIB;
return (DI_WALK_CONTINUE);
}
if (load_lib(node, minor, libloc_p) != CFGA_OK) {
libloc_p->status = CFGA_LIB_ERROR;
return (DI_WALK_CONTINUE);
}
libloc_p->status = CFGA_OK;
return (DI_WALK_TERMINATE);
} else {
libloc_p->status = CFGA_APID_NOEXIST;
return (DI_WALK_CONTINUE);
}
}
/*
* check_ap_phys - called for each attachment point found
*
* This is used in cases where a particular attachment point
* is specified via a physical name. If the name matches then
* we try and find and load the library for it.
*/
static int
check_ap_phys(
di_node_t node,
di_minor_t minor,
void *arg)
{
lib_loc_t *libloc_p;
char phys_name[MAXPATHLEN];
char *devfs_path;
char *minor_name;
libloc_p = (lib_loc_t *)arg;
devfs_path = di_devfs_path(node);
minor_name = di_minor_name(minor);
if (devfs_path == NULL || minor_name == NULL) {
libloc_p->status = CFGA_APID_NOEXIST;
return (DI_WALK_CONTINUE);
}
(void) snprintf(phys_name, sizeof (phys_name), "%s%s:%s",
DEVICES_DIR, devfs_path, minor_name);
di_devfs_path_free(devfs_path);
if (strcmp(phys_name, libloc_p->ap_base) == 0) {
if (find_lib(node, minor, libloc_p) != CFGA_OK) {
libloc_p->status = CFGA_NO_LIB;
return (DI_WALK_CONTINUE);
}
if (load_lib(node, minor, libloc_p) != CFGA_OK) {
libloc_p->status = CFGA_LIB_ERROR;
return (DI_WALK_CONTINUE);
}
libloc_p->status = CFGA_OK;
return (DI_WALK_TERMINATE);
} else {
libloc_p->status = CFGA_APID_NOEXIST;
return (DI_WALK_CONTINUE);
}
}
/*
* lib_in_list
*
* See if library, as specified by the full pathname and controller
* instance number is already represented in the plugin library list.
* If the instance number is -1 it is ignored.
*/
static plugin_lib_t *
lib_in_list(char *libpath)
{
plugin_lib_t *libp = NULL;
for (libp = plugin_list.next; libp != NULL; libp = libp->next) {
if (strncmp(libpath, libp->libpath, MAXPATHLEN) == 0) {
return (libp);
}
}
return (NULL);
}
/*
* Coalesce stat and list data into single array
*/
static cfga_err_t
realloc_data_ext(
cfga_list_data_t **ap_id_list,
int *nlistp,
list_stat_t *lstatp)
{
int i, j;
stat_data_list_t *slp;
cfga_list_data_t *cldp;
array_list_t *alp;
cfga_err_t rc = CFGA_OK;
assert(*lstatp->countp >= 0);
if (*lstatp->countp == 0) {
*ap_id_list = NULL;
*nlistp = 0;
return (CFGA_OK);
}
/*
* allocate the array
*/
if ((cldp = config_calloc_check(*lstatp->countp,
sizeof (cfga_list_data_t), lstatp->errstr)) == NULL) {
rc = CFGA_LIB_ERROR;
goto out;
}
/*
* copy all the stat elements (if any) into the array
*/
slp = lstatp->sdl;
for (i = 0; slp != NULL; i++) {
if (i >= *lstatp->countp) {
rc = CFGA_LIB_ERROR;
goto out;
}
stat_to_list(&cldp[i], &slp->stat_data);
slp = slp->next;
}
/*
* copy all the list elements (if any) into the array
*/
alp = lstatp->al;
for (; alp != NULL; ) {
if (i + alp->nelem > *lstatp->countp) {
rc = CFGA_LIB_ERROR;
goto out;
}
for (j = 0; j < alp->nelem; i++, j++) {
cldp[i] = alp->array[j];
}
alp = alp->next;
}
if (i != *lstatp->countp) {
rc = CFGA_LIB_ERROR;
} else {
rc = CFGA_OK;
}
/*FALLTHRU*/
out:
/* clean up */
lstat_free(lstatp);
if (rc == CFGA_OK) {
*ap_id_list = cldp;
*nlistp = *lstatp->countp;
} else {
S_FREE(cldp);
*ap_id_list = NULL;
*nlistp = 0;
}
return (rc);
}
/*
* The caller of this routine may supply a buffer through
* ap_id_list for returning data. Otherwise, this routine allocates the
* buffer.
*/
static cfga_err_t
realloc_data(cfga_stat_data_t **ap_id_list, int *nlistp, list_stat_t *lstatp)
{
int i;
stat_data_list_t *slp;
cfga_stat_data_t *csdp, *buf;
cfga_err_t rc;
assert(*lstatp->countp >= 0);
if (*lstatp->countp == 0) {
*nlistp = 0;
return (CFGA_OK);
}
/*
* allocate the array if caller does not supply one.
*/
if (*ap_id_list == NULL) {
if ((buf = config_calloc_check(*lstatp->countp,
sizeof (cfga_stat_data_t), lstatp->errstr)) == NULL) {
rc = CFGA_LIB_ERROR;
goto out;
}
} else {
buf = *ap_id_list;
}
/*
* copy the stat elements into the array
*/
csdp = buf;
slp = lstatp->sdl;
for (i = 0; slp != NULL; i++) {
if (i >= *lstatp->countp) {
rc = CFGA_LIB_ERROR;
goto out;
}
*csdp++ = slp->stat_data;
slp = slp->next;
}
rc = CFGA_OK;
out:
if (rc == CFGA_OK) {
*nlistp = *lstatp->countp;
*ap_id_list = buf;
} else {
/*
* Free buffer only if we allocated it.
*/
if (*ap_id_list == NULL) {
free(buf);
}
*nlistp = 0;
}
assert(lstatp->al == NULL);
lstat_free(lstatp);
return (rc);
}
/*
* list_common - walk the device tree and stat all attachment points.
*/
static cfga_err_t
list_common(list_stat_t *lstatp, const char *class)
{
di_node_t rnode;
char nodetype[MAXPATHLEN];
const char *l_class, *l_sep;
/*
* begin walk of device tree
*/
if ((rnode = di_init("/", DINFOCACHE)) == DI_NODE_NIL) {
config_err(errno, DI_INIT_FAILED, lstatp->errstr);
return (CFGA_LIB_ERROR);
}
/*
* May walk a subset of all attachment points in the device tree if
* a class is specified
*/
if (class != NULL) {
l_sep = ":";
l_class = class;
} else {
l_sep = l_class = "";
}
(void) snprintf(nodetype, sizeof (nodetype), "%s%s%s",
DDI_NT_ATTACHMENT_POINT, l_sep, l_class);
(void) di_walk_minor(rnode, nodetype,
DI_CHECK_ALIAS|DI_CHECK_INTERNAL_PATH, lstatp, do_list_common);
di_fini(rnode);
return (CFGA_OK);
}
static void
config_err(int errnum, int err_type, char **errstring)
{
char *p = NULL, *q = NULL;
char *syserr = NULL;
char syserr_num[20];
int len = 0;
/*
* If errstring is null it means user in not interested in getting
* error status. So we don't do all the work
*/
if (errstring == NULL) {
return;
}
if (errnum != 0) {
syserr = strerror(errnum);
if (syserr == NULL) {
(void) sprintf(syserr_num, "errno=%d", errnum);
syserr = syserr_num;
}
} else
syserr = NULL;
q = dgettext(TEXT_DOMAIN, err_strings[err_type]);
len = strlen(q);
if (syserr != NULL) {
len += strlen(err_sep) + strlen(syserr);
}
p = malloc(len + 1);
if (p == NULL) {
*errstring = NULL;
return;
}
(void) strcpy(p, q);
if (syserr != NULL) {
(void) strcat(p, err_sep);
(void) strcat(p, syserr);
}
*errstring = p;
}
/*
* do_list_common - Routine to list attachment point as part of
* a config_list opertion. Used by both v1 and v2 interfaces.
* This is somewhat similar to config_get_lib() and its helper routines
* except that the ap_ids are always physical and don't have dynamic
* components.
*/
static int
do_list_common(
di_node_t node,
di_minor_t minor,
void *arg)
{
lib_loc_t lib_loc;
plugin_lib_t *libp;
list_stat_t *lstatp = NULL;
cfga_err_t ret = CFGA_ERROR;
lstatp = (list_stat_t *)arg;
lib_loc.libp = NULL;
/*
* try and find a lib for this node
*/
if (find_lib(node, minor, &lib_loc) != CFGA_OK) {
return (DI_WALK_CONTINUE);
}
/*
* Load all plugins. We will check compatibility later in this
* routine.
*/
lib_loc.vers_req.v_min = CFGA_HSL_V1;
lib_loc.vers_req.v_max = CFGA_HSL_VERS;
ret = load_lib(node, minor, &lib_loc);
if (ret != CFGA_OK) {
return (DI_WALK_CONTINUE);
}
libp = lib_loc.libp;
assert(libp != NULL);
/*
* Note: For list type routines (list all attachment points in
* device tree) we don't pass errstring to the plugin, nor do we
* stop the walk if an error occurs in the plugin.
*/
if (compat_plugin(&lstatp->use_vers, libp->plugin_vers)) {
(void) libp->vers_ops->stat_plugin(lstatp, &lib_loc, NULL);
}
rele_lib(libp);
return (DI_WALK_CONTINUE);
}
/*
* stat_common - stat a user specified set of attachment points.
*/
static cfga_err_t
stat_common(
int num_ap_ids,
char *const *ap_ids,
const char *class,
list_stat_t *lstatp)
{
int i;
lib_loc_t libloc;
plugin_lib_t *libp;
cfga_err_t rc = CFGA_OK;
/*
* operate on each ap_id
*/
for (i = 0; i < num_ap_ids; i++) {
libloc.libp = NULL;
if ((rc = config_get_lib(ap_ids[i], &libloc,
lstatp->errstr)) != CFGA_OK) {
break;
}
assert(libloc.libp != NULL);
libp = libloc.libp;
/*
* do pre-filtering if requested
*/
if (class != NULL && strcmp(libloc.ap_class, class)) {
rele_lib(libp);
continue;
}
/*
* Unlike list type routines, while stat'ing specific
* attachment points we pass errstring to the plugins
* and halt if an error occurs in the plugin.
*/
rc = libp->vers_ops->stat_plugin(lstatp, &libloc,
lstatp->errstr);
rele_lib(libp);
if (rc != CFGA_OK) {
break;
}
}
if (rc != CFGA_OK) {
lstat_free(lstatp);
}
return (rc);
}
/*ARGSUSED*/
static cfga_err_t
null_stat_plugin(list_stat_t *lstatp, lib_loc_t *libloc_p, char **errstring)
{
return (CFGA_OK);
}
/*
* Pass errstring as a separate argument. Some higher level routines need
* it to be NULL.
*/
static cfga_err_t
stat_plugin_v1(list_stat_t *lstatp, lib_loc_t *libloc_p, char **errstring)
{
stat_data_list_t *slp, *slp2 = NULL;
cfga_err_t rc;
/*
* allocate stat data buffer and list element
*/
if ((slp = config_calloc_check(1, sizeof (stat_data_list_t),
errstring)) == NULL) {
return (CFGA_LIB_ERROR);
}
/*
* Do the stat
*/
errno = 0;
if ((rc = (*(libloc_p->libp->cfga_stat_p))(libloc_p->ap_physical,
&slp->stat_data, lstatp->opts, errstring)) != CFGA_OK) {
S_FREE(slp);
return (rc);
}
slp->next = NULL;
/*
* Set up the logical and physical id's.
* For v1 interfaces, the generic library (libcfgadm) creates the
* ap_ids. mklog() is assumed to have been called in
* the caller of this routine.
*/
(void) snprintf(slp->stat_data.ap_log_id, CFGA_AP_LOG_ID_LEN, "%s",
libloc_p->ap_logical);
(void) snprintf(slp->stat_data.ap_phys_id, CFGA_AP_PHYS_ID_LEN, "%s",
libloc_p->ap_physical);
/*
* link it in
*/
if ((slp2 = lstatp->sdl) == NULL) {
lstatp->sdl = slp;
} else {
while (slp2->next != NULL)
slp2 = slp2->next;
slp2->next = slp;
}
/* keep count */
(*lstatp->countp)++;
return (CFGA_OK);
}
static cfga_err_t
stat_plugin_v2(list_stat_t *lstatp, lib_loc_t *libloc_p, char **errstring)
{
int i;
array_list_t *alp, *alp2 = NULL;
cfga_err_t rc;
char *class;
/*
* allocate array list
*/
if ((alp = config_calloc_check(1, sizeof (array_list_t),
errstring)) == NULL) {
return (CFGA_LIB_ERROR);
}
alp->array = NULL;
alp->nelem = 0;
/*
* The listopts argument is currently unused. Use NULL
*/
errno = 0;
if ((rc = (*(libloc_p->libp->cfga_list_ext_p))(
libloc_p->ap_physical, &alp->array, &alp->nelem, lstatp->opts, NULL,
errstring, lstatp->flags)) != CFGA_OK || alp->nelem <= 0) {
S_FREE(alp);
return (rc);
}
alp->next = NULL;
/*
* Set up the logical and physical id's if necessary.
* For v2 interfaces, the generic library (libcfgadm) creates the
* ap_ids only if there are no dynamic attachment points and the
* plug-in does not create the name itself. mklog() is
* assumed to have been called in the caller of this routine.
*/
if (alp->nelem == 1) {
char cphys, clog;
clog = (alp->array[0]).ap_log_id[0];
cphys = (alp->array[0]).ap_phys_id[0];
if (clog == '\0') {
(void) snprintf((alp->array[0]).ap_log_id,
sizeof ((alp->array[0]).ap_log_id), "%s",
libloc_p->ap_logical);
}
if (cphys == '\0') {
(void) snprintf((alp->array[0]).ap_phys_id,
sizeof ((alp->array[0]).ap_phys_id), "%s",
libloc_p->ap_physical);
}
}
if (libloc_p->ap_class[0] == '\0') {
class = CFGA_NO_CLASS;
} else {
class = libloc_p->ap_class;
}
/* Fill in the class information for all list elements */
for (i = 0; i < alp->nelem; i++) {
(void) snprintf((alp->array[i]).ap_class,
sizeof ((alp->array[i]).ap_class), "%s", class);
}
/*
* link it in
*/
if ((alp2 = lstatp->al) == NULL) {
lstatp->al = alp;
} else {
while (alp2->next != NULL)
alp2 = alp2->next;
alp2->next = alp;
}
/* keep count */
(*lstatp->countp) += alp->nelem;
return (CFGA_OK);
}
/*
* Check if a plugin version is within requested limits.
*/
static int
compat_plugin(vers_req_t *reqp, int plugin_vers)
{
if (!VALID_HSL_VERS(reqp->v_min) || !VALID_HSL_VERS(reqp->v_max) ||
!VALID_HSL_VERS(plugin_vers)) {
return (0);
}
if (plugin_vers < reqp->v_min || plugin_vers > reqp->v_max) {
return (0);
}
return (1);
}
/*
* find_arg_type - determine if an argument is an ap_id or an ap_type.
* Adapted from cfgadm.c
*/
static cfga_ap_types_t
find_arg_type(const char *ap_id)
{
struct stat sbuf;
cfga_ap_types_t type = UNKNOWN_AP;
char *mkr = NULL;
size_t len;
int size_ap = 0, size_mkr = 0, digit = 0, i = 0;
char *cp, path[MAXPATHLEN], ap_base[MAXPATHLEN];
/*
* sanity checks
*/
if (ap_id == NULL || *ap_id == '\0') {
return (UNKNOWN_AP);
}
/*
* Extract the base component
*/
if ((cp = GET_DYN(ap_id)) != NULL) {
len = cp - ap_id;
} else {
len = strlen(ap_id);
}
if (len >= sizeof (ap_base)) {
return (UNKNOWN_AP);
}
/* Copy only the first "len" chars */
(void) strncpy(ap_base, ap_id, len);
ap_base[len] = '\0';
/*
* If it starts with a slash and is stat-able its a physical.
*/
if (*ap_base == '/' && stat(ap_base, &sbuf) == 0) {
return (PHYSICAL_AP);
}
/*
* Is this a symlink in CFGA_DEV_DIR ?
*/
(void) snprintf(path, sizeof (path), "%s%s",
CFGA_DEV_DIR SLASH, ap_base);
if (lstat(path, &sbuf) == 0 && S_ISLNK(sbuf.st_mode) &&
stat(path, &sbuf) == 0) {
return (LOGICAL_LINK_AP);
}
/*
* Check for ":" which is always present in an ap_id
* but not in an ap_type.
* we need to check that the characters right before the : are digits
* since an ap_id is of the form <name><instance>:<specific ap name>
*/
if ((mkr = strchr(ap_base, ':')) == NULL) {
type = AP_TYPE;
} else {
size_ap = strlen(ap_base);
size_mkr = strlen(mkr);
mkr = ap_base;
digit = 0;
for (i = size_ap - size_mkr - 1; i > 0; i--) {
if ((int)isdigit(mkr[i])) {
digit++;
break;
}
}
if (digit == 0) {
type = AP_TYPE;
} else {
type = LOGICAL_DRV_AP;
}
}
return (type);
}
/*ARGSUSED*/
static cfga_err_t
null_get_cond(lib_loc_t *liblocp, cfga_cond_t *condp, char **errstring)
{
return (CFGA_OK);
}
static cfga_err_t
get_cond_v1(lib_loc_t *liblocp, cfga_cond_t *condp, char **errstring)
{
plugin_lib_t *libp;
cfga_stat_data_t sdbuf;
cfga_err_t rc;
libp = liblocp->libp;
if (libp->plugin_vers != CFGA_HSL_V1) {
return (CFGA_LIB_ERROR);
}
errno = 0;
if ((rc = (*liblocp->libp->cfga_stat_p)(
liblocp->ap_physical, &sdbuf, NULL, errstring))
== CFGA_OK) {
*condp = sdbuf.ap_cond;
} else {
*condp = CFGA_COND_UNKNOWN;
}
return (rc);
}
static cfga_err_t
get_cond_v2(lib_loc_t *liblocp, cfga_cond_t *condp, char **errstring)
{
int nelem;
plugin_lib_t *libp;
cfga_list_data_t *ldbufp;
cfga_err_t rc;
libp = liblocp->libp;
if (libp->plugin_vers != CFGA_HSL_V2) {
return (CFGA_LIB_ERROR);
}
errno = 0;
nelem = 0;
ldbufp = NULL;
if ((rc = (*liblocp->libp->cfga_list_ext_p)(
liblocp->ap_physical, &ldbufp, &nelem, NULL, NULL,
errstring, 0)) == CFGA_OK) {
assert(nelem == 1 && ldbufp != NULL);
*condp = ldbufp->ap_cond;
S_FREE(ldbufp);
} else {
*condp = CFGA_COND_UNKNOWN;
}
return (rc);
}
/* mask represents the flags accepted */
static cfga_err_t
check_flags(cfga_flags_t flags, cfga_flags_t mask, char **errstring)
{
if ((flags & ~mask) != 0) {
config_err(0, INVALID_ARGS, errstring);
return (CFGA_ERROR);
} else {
return (CFGA_OK);
}
}
static cfga_err_t
check_apids(int num_ap_ids, char *const *ap_ids, char **errstring)
{
if (num_ap_ids <= 0 || ap_ids == NULL) {
config_err(0, INVALID_ARGS, errstring);
return (CFGA_ERROR);
} else {
return (CFGA_OK);
}
}
/*
* Returns the class or the empty string if attacment point has
* no class.
*/
static char *
get_class(di_minor_t minor)
{
char *cp, c;
size_t len;
if (minor == DI_MINOR_NIL) {
return (NULL);
}
cp = di_minor_nodetype(minor);
if (cp == NULL) {
return (NULL);
}
len = strlen(DDI_NT_ATTACHMENT_POINT);
if (strncmp(cp, DDI_NT_ATTACHMENT_POINT, len)) {
return (NULL);
}
cp += len;
c = *cp;
if (c != '\0' && c != ':') {
return (NULL);
}
if (c == ':') {
cp++;
}
return (cp);
}
/*
* Transform stat data to list data
*/
static void
stat_to_list(cfga_list_data_t *lp, cfga_stat_data_t *statp)
{
(void) snprintf(lp->ap_log_id, sizeof (lp->ap_log_id), "%s",
statp->ap_log_id);
(void) snprintf(lp->ap_phys_id, sizeof (lp->ap_phys_id), "%s",
statp->ap_phys_id);
(void) snprintf(lp->ap_class, sizeof (lp->ap_class), "%s",
CFGA_NO_CLASS);
lp->ap_r_state = statp->ap_r_state;
lp->ap_o_state = statp->ap_o_state;
lp->ap_cond = statp->ap_cond;
lp->ap_busy = statp->ap_busy;
lp->ap_status_time = statp->ap_status_time;
(void) snprintf(lp->ap_info, sizeof (lp->ap_info), "%s",
statp->ap_info);
(void) snprintf(lp->ap_type, sizeof (lp->ap_type), "%s",
statp->ap_type);
}
static void
lstat_free(list_stat_t *lstatp)
{
stat_data_list_t *slp, *slp2;
array_list_t *ap, *ap2;
slp = lstatp->sdl;
while (slp != NULL) {
slp2 = slp->next;
S_FREE(slp);
slp = slp2;
}
lstatp->sdl = NULL;
ap = lstatp->al;
while (ap != NULL) {
ap2 = ap->next;
S_FREE(ap->array);
S_FREE(ap);
ap = ap2;
}
lstatp->al = NULL;
}
static cfga_err_t
split_apid(char *ap_id, char **dyncompp, char **errstring)
{
char *cp;
*dyncompp = NULL;
if (ap_id == NULL) {
return (CFGA_ERROR);
}
if ((cp = strstr(ap_id, CFGA_DYN_SEP)) == NULL) {
return (CFGA_OK);
}
*cp = '\0';
cp += strlen(CFGA_DYN_SEP);
if ((*dyncompp = config_calloc_check(1, strlen(cp) + 1,
errstring)) == NULL) {
return (CFGA_LIB_ERROR);
}
(void) strcpy(*dyncompp, cp);
return (CFGA_OK);
}
static void
append_dyn(char *buf, const char *dyncomp, size_t blen)
{
if (dyncomp != NULL) {
char *cp = buf + strlen(buf);
size_t len = blen - strlen(buf);
(void) snprintf(cp, len, "%s%s", CFGA_DYN_SEP,
dyncomp);
}
}
/*
* Default implementation of cfga_ap_id_cmp. Works for most cases
* except for long hex number sequences like world-wide-name.
*
* This function compares the ap's in a generic way. It does so by
* determining the place of difference between the 2 aps. If the first
* difference is a digit, it attempts to obtain the numbers and compare them
* Otherwise it just compares the aps as strings
*/
static int
default_ap_id_cmp(const char *ap_id1, const char *ap_id2)
{
int i = 0;
/*
* Search for first different char
*/
while (ap_id1[i] == ap_id2[i] && ap_id1[i] != '\0')
i++;
/*
* If one of the char is a digit, back up to where the
* number started, compare the number.
*/
if (isdigit(ap_id1[i]) || isdigit(ap_id2[i])) {
while ((i > 0) && isdigit(ap_id1[i - 1]))
i--;
if (isdigit(ap_id1[i]) && isdigit(ap_id2[i]))
return (atoi(ap_id1 + i) - atoi(ap_id2 + i));
}
/* One of them isn't a number, compare the char */
return (ap_id1[i] - ap_id2[i]);
}
static void
hold_lib(plugin_lib_t *libp)
{
assert(libp->refcnt >= 0);
(void) mutex_lock(&libp->lock);
libp->refcnt++;
(void) mutex_unlock(&libp->lock);
}
static void
rele_lib(plugin_lib_t *libp)
{
assert(libp->refcnt > 0);
(void) mutex_lock(&libp->lock);
libp->refcnt--;
(void) mutex_unlock(&libp->lock);
}