+++ /dev/null
-
-/*
- * Host Resources MIB - partition device group implementation - hr_partition.c
- *
- */
-
-#include <net-snmp/net-snmp-config.h>
-#include <fcntl.h>
-#if HAVE_STRING_H
-#include <string.h>
-#else
-#include <strings.h>
-#endif
-#if HAVE_UNISTD_H
-#include <unistd.h>
-#endif
-#include <errno.h>
-
-#include "host_res.h"
-#include "hr_partition.h"
-#include "hr_filesys.h"
-#include "hr_disk.h"
-
-#include <sys/stat.h>
-
-#define HRP_MONOTONICALLY_INCREASING
-
- /*********************
- *
- * Kernel & interface information,
- * and internal forward declarations
- *
- *********************/
-
-static int HRP_savedDiskIndex;
-static int HRP_savedPartIndex;
-static char HRP_savedName[100];
-
-static int HRP_DiskIndex;
-
-static void Save_HR_Partition(int, int);
-
-
- /*********************
- *
- * Initialisation & common implementation functions
- *
- *********************/
-
-static void Init_HR_Partition(void);
-static int Get_Next_HR_Partition(void);
-int header_hrpartition(struct variable *, oid *, size_t *, int,
- size_t *, WriteMethod **);
-
-
-#define HRPART_INDEX 1
-#define HRPART_LABEL 2
-#define HRPART_ID 3
-#define HRPART_SIZE 4
-#define HRPART_FSIDX 5
-
-struct variable4 hrpartition_variables[] = {
- {HRPART_INDEX, ASN_INTEGER, RONLY, var_hrpartition, 2, {1, 1}},
- {HRPART_LABEL, ASN_OCTET_STR, RONLY, var_hrpartition, 2, {1, 2}},
- {HRPART_ID, ASN_OCTET_STR, RONLY, var_hrpartition, 2, {1, 3}},
- {HRPART_SIZE, ASN_INTEGER, RONLY, var_hrpartition, 2, {1, 4}},
- {HRPART_FSIDX, ASN_INTEGER, RONLY, var_hrpartition, 2, {1, 5}}
-};
-oid hrpartition_variables_oid[] =
- { 1, 3, 6, 1, 2, 1, 25, 3, 7 };
-
-
-void
-init_hr_partition(void)
-{
- REGISTER_MIB("host/hr_partition", hrpartition_variables, variable4,
- hrpartition_variables_oid);
-}
-
-
-/*
- * header_hrpartition(...
- * Arguments:
- * vp IN - pointer to variable entry that points here
- * name IN/OUT - IN/name requested, OUT/name found
- * length IN/OUT - length of IN/OUT oid's
- * exact IN - TRUE if an exact match was requested
- * var_len OUT - length of variable or 0 if function returned
- * write_method
- *
- */
-
-int
-header_hrpartition(struct variable *vp,
- oid * name,
- size_t * length,
- int exact,
- size_t * var_len, WriteMethod ** write_method)
-{
-#define HRPART_DISK_NAME_LENGTH 11
-#define HRPART_ENTRY_NAME_LENGTH 12
- oid newname[MAX_OID_LEN];
- int part_idx, LowDiskIndex = -1, LowPartIndex = -1;
- int result;
-
- DEBUGMSGTL(("host/hr_partition", "var_hrpartition: "));
- DEBUGMSGOID(("host/hr_partition", name, *length));
- DEBUGMSG(("host/hr_partition", " %d\n", exact));
-
- memcpy((char *) newname, (char *) vp->name,
- (int) vp->namelen * sizeof(oid));
- /*
- * Find "next" partition entry
- */
-
- Init_HR_Disk();
- Init_HR_Partition();
-
- /*
- * Find the "next" disk and partition entries.
- * If we're in the middle of the table, then there's
- * no point in examining earlier disks, so set the
- * starting disk to that of the variable being queried.
- *
- * If we've moved from one column of the table to another,
- * then we need to start at the beginning again.
- * (i.e. the 'compare' fails to match)
- * Similarly if we're at the start of the table
- * (i.e. *length is too short to be a full instance)
- */
-
- if ((snmp_oid_compare(vp->name, vp->namelen, name, vp->namelen) == 0)
- && (*length > HRPART_DISK_NAME_LENGTH)) {
- LowDiskIndex =
- (name[HRPART_DISK_NAME_LENGTH] &
- ((1 << HRDEV_TYPE_SHIFT) - 1));
-
- while (HRP_DiskIndex < LowDiskIndex) {
- Init_HR_Partition(); /* moves to next disk */
- if (HRP_DiskIndex == -1)
- return (MATCH_FAILED);
- }
- }
-
- for (;;) {
- part_idx = Get_Next_HR_Partition();
- if (part_idx == 0)
- break;
- newname[HRPART_DISK_NAME_LENGTH] =
- (HRDEV_DISK << HRDEV_TYPE_SHIFT) + HRP_DiskIndex;
- newname[HRPART_ENTRY_NAME_LENGTH] = part_idx;
- result = snmp_oid_compare(name, *length, newname, vp->namelen + 2);
- if (exact && (result == 0)) {
- Save_HR_Partition(HRP_DiskIndex, part_idx);
- LowDiskIndex = HRP_DiskIndex;
- LowPartIndex = part_idx;
- break;
- }
- if (!exact && (result < 0)) {
- if (LowPartIndex == -1) {
- Save_HR_Partition(HRP_DiskIndex, part_idx);
- LowDiskIndex = HRP_DiskIndex;
- LowPartIndex = part_idx;
- } else if (LowDiskIndex < HRP_DiskIndex)
- break;
- else if (part_idx < LowPartIndex) {
- Save_HR_Partition(HRP_DiskIndex, part_idx);
- LowDiskIndex = HRP_DiskIndex;
- LowPartIndex = part_idx;
- }
-#ifdef HRP_MONOTONICALLY_INCREASING
- break;
-#endif
- }
- }
-
- if (LowPartIndex == -1) {
- DEBUGMSGTL(("host/hr_partition", "... index out of range\n"));
- return (MATCH_FAILED);
- }
-
- newname[HRPART_DISK_NAME_LENGTH] =
- (HRDEV_DISK << HRDEV_TYPE_SHIFT) + LowDiskIndex;
- newname[HRPART_ENTRY_NAME_LENGTH] = LowPartIndex;
- memcpy((char *) name, (char *) newname,
- ((int) vp->namelen + 2) * sizeof(oid));
- *length = vp->namelen + 2;
- *write_method = 0;
- *var_len = sizeof(long); /* default to 'long' results */
-
- DEBUGMSGTL(("host/hr_partition", "... get partition stats "));
- DEBUGMSGOID(("host/hr_partition", name, *length));
- DEBUGMSG(("host/hr_partition", "\n"));
- return LowPartIndex;
-}
-
-
- /*********************
- *
- * System specific implementation functions
- *
- *********************/
-
-
-u_char *
-var_hrpartition(struct variable * vp,
- oid * name,
- size_t * length,
- int exact, size_t * var_len, WriteMethod ** write_method)
-{
- int part_idx;
- static char string[100];
- struct stat stat_buf;
-
- part_idx =
- header_hrpartition(vp, name, length, exact, var_len, write_method);
- if (part_idx == MATCH_FAILED)
- return NULL;
-
- if (stat(HRP_savedName, &stat_buf) == -1)
- return NULL;
-
- switch (vp->magic) {
- case HRPART_INDEX:
- long_return = part_idx;
- return (u_char *) & long_return;
- case HRPART_LABEL:
- *var_len = strlen(HRP_savedName);
- return (u_char *) HRP_savedName;
- case HRPART_ID: /* Use the device number */
- sprintf(string, "0x%x", (int) stat_buf.st_rdev);
- *var_len = strlen(string);
- return (u_char *) string;
- case HRPART_SIZE:
- /*
- * XXX - based on single partition assumption
- */
- long_return = Get_FSSize(HRP_savedName);
- return (u_char *) & long_return;
- case HRPART_FSIDX:
- long_return = Get_FSIndex(HRP_savedName);
- return (u_char *) & long_return;
- default:
- DEBUGMSGTL(("snmpd", "unknown sub-id %d in var_hrpartition\n",
- vp->magic));
- }
- return NULL;
-}
-
-
- /*********************
- *
- * Internal implementation functions
- *
- *********************/
-
-static int HRP_index;
-
-static void
-Init_HR_Partition(void)
-{
- HRP_DiskIndex = Get_Next_HR_Disk();
- if (HRP_DiskIndex != -1)
- HRP_DiskIndex &= ((1 << HRDEV_TYPE_SHIFT) - 1);
-
- HRP_index = -1;
-}
-
-static int
-Get_Next_HR_Partition(void)
-{
- char string[100];
- int fd;
-
- if (HRP_DiskIndex == -1) {
- return 0;
- }
-
- HRP_index++;
- while (Get_Next_HR_Disk_Partition(string, HRP_index) != -1) {
- DEBUGMSGTL(("host/hr_partition",
- "Get_Next_HR_Partition: %s (:%d)\n",
- string, HRP_index));
-
- fd = open(string, O_RDONLY);
- if (fd != -1) {
- close(fd);
- return HRP_index + 1;
- } else if (errno == EBUSY) {
- return HRP_index + 1;
- }
- HRP_index++;
- }
-
- /*
- * Finished with this disk, try the next
- */
- Init_HR_Partition();
- return (Get_Next_HR_Partition());
-}
-
-static void
-Save_HR_Partition(int disk_idx, int part_idx)
-{
- HRP_savedDiskIndex = disk_idx;
- HRP_savedPartIndex = part_idx;
- (void) Get_Next_HR_Disk_Partition(HRP_savedName, HRP_index);
-}
projects / bcm963xx.git / blobdiff