diff options
Diffstat (limited to 'usr/src/lib/libdiskmgt/common/bus.c')
| -rw-r--r-- | usr/src/lib/libdiskmgt/common/bus.c | 250 |
1 files changed, 250 insertions, 0 deletions
diff --git a/usr/src/lib/libdiskmgt/common/bus.c b/usr/src/lib/libdiskmgt/common/bus.c new file mode 100644 index 0000000000..2b406aa6a6 --- /dev/null +++ b/usr/src/lib/libdiskmgt/common/bus.c @@ -0,0 +1,250 @@ +/* + * CDDL HEADER START + * + * The contents of this file are subject to the terms of the + * Common Development and Distribution License, Version 1.0 only + * (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 2004 Sun Microsystems, Inc. All rights reserved. + * Use is subject to license terms. + */ + +#pragma ident "%Z%%M% %I% %E% SMI" + +#include <fcntl.h> +#include <libdevinfo.h> +#include <stdlib.h> +#include <sys/sunddi.h> +#include <sys/types.h> +#include <sys/scsi/conf/autoconf.h> + +#include "libdiskmgt.h" +#include "disks_private.h" + +static descriptor_t **get_assoc_buses(descriptor_t *desc, int *errp); +static descriptor_t **get_assoc_controllers(descriptor_t *desc, int *errp); + +descriptor_t ** +bus_get_assoc_descriptors(descriptor_t *desc, dm_desc_type_t type, int *errp) +{ + switch (type) { + case DM_BUS: + return (get_assoc_buses(desc, errp)); + case DM_CONTROLLER: + return (get_assoc_controllers(desc, errp)); + } + + *errp = EINVAL; + return (NULL); +} + +nvlist_t * +bus_get_attributes(descriptor_t *dp, int *errp) +{ + bus_t *bp; + nvlist_t *attrs; + + if (nvlist_alloc(&attrs, NVATTRS, 0) != 0) { + *errp = ENOMEM; + return (NULL); + } + + bp = dp->p.bus; + + if (nvlist_add_string(attrs, DM_BTYPE, bp->btype) != 0) { + nvlist_free(attrs); + *errp = ENOMEM; + return (NULL); + } + + if (bp->freq != 0) { + if (nvlist_add_uint32(attrs, DM_CLOCK, bp->freq) != 0) { + nvlist_free(attrs); + *errp = ENOMEM; + return (NULL); + } + } + + if (bp->pname != NULL) { + if (nvlist_add_string(attrs, DM_PNAME, bp->pname) != 0) { + nvlist_free(attrs); + *errp = ENOMEM; + return (NULL); + } + } + + *errp = 0; + return (attrs); +} + +descriptor_t * +bus_get_descriptor_by_name(char *name, int *errp) +{ + descriptor_t **buses; + int i; + descriptor_t *bus = NULL; + + buses = cache_get_descriptors(DM_BUS, errp); + if (*errp != 0) { + return (NULL); + } + + for (i = 0; buses[i]; i++) { + if (libdiskmgt_str_eq(name, buses[i]->p.bus->name)) { + bus = buses[i]; + } else { + /* clean up the unused descriptors */ + cache_free_descriptor(buses[i]); + } + } + free(buses); + + if (bus == NULL) { + *errp = ENODEV; + } + + return (bus); +} + +/* ARGSUSED */ +descriptor_t ** +bus_get_descriptors(int filter[], int *errp) +{ + return (cache_get_descriptors(DM_BUS, errp)); +} + +char * +bus_get_name(descriptor_t *desc) +{ + return (desc->p.bus->name); +} + +/* ARGSUSED */ +nvlist_t * +bus_get_stats(descriptor_t *dp, int stat_type, int *errp) +{ + /* There are no stat types defined for controllers */ + *errp = EINVAL; + return (NULL); +} + +int +bus_make_descriptors() +{ + int error; + bus_t *bp; + + bp = cache_get_buslist(); + while (bp != NULL) { + cache_load_desc(DM_BUS, bp, NULL, NULL, &error); + if (error != 0) { + return (error); + } + bp = bp->next; + } + + return (0); +} + +static descriptor_t ** +get_assoc_buses(descriptor_t *desc, int *errp) +{ + bus_t *bp; + char *name; + descriptor_t **allbuses; + descriptor_t **buses; + int cnt; + int i; + int pos; + + bp = desc->p.bus; + name = bp->name; + + allbuses = cache_get_descriptors(DM_BUS, errp); + if (*errp != 0) { + return (NULL); + } + + /* Count how many we have (we overcount, but thats ok). */ + for (cnt = 0; allbuses[cnt]; cnt++); + + /* make the snapshot */ + buses = (descriptor_t **)calloc(cnt + 1, sizeof (descriptor_t *)); + if (buses == NULL) { + *errp = ENOMEM; + cache_free_descriptors(allbuses); + return (NULL); + } + + /* + * Get this buses parent bus and get the buses that I am the parent of. + */ + pos = 0; + for (i = 0; allbuses[i]; i++) { + if (libdiskmgt_str_eq(name, allbuses[i]->p.bus->pname)) { + buses[pos++] = allbuses[i]; + } else if (bp->pname != NULL && + libdiskmgt_str_eq(bp->pname, allbuses[i]->p.bus->name)) { + + buses[pos++] = allbuses[i]; + } else { + /* clean up the unused descriptor */ + cache_free_descriptor(allbuses[i]); + } + } + buses[pos] = NULL; + + free(allbuses); + + *errp = 0; + return (buses); +} + +static descriptor_t ** +get_assoc_controllers(descriptor_t *desc, int *errp) +{ + bus_t *bp; + descriptor_t **controllers; + int cnt; + int i; + + bp = desc->p.bus; + + /* Count how many we have. */ + for (cnt = 0; bp->controllers[cnt]; cnt++); + + /* make the snapshot */ + controllers = (descriptor_t **)calloc(cnt + 1, sizeof (descriptor_t *)); + if (controllers == NULL) { + *errp = ENOMEM; + return (NULL); + } + + for (i = 0; bp->controllers[i]; i++) { + controllers[i] = cache_get_desc(DM_CONTROLLER, bp->controllers[i], + NULL, NULL, errp); + if (*errp != 0) { + cache_free_descriptors(controllers); + return (NULL); + } + } + controllers[i] = NULL; + + *errp = 0; + return (controllers); +} |