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Diffstat (limited to 'packages/sccd/files/scc-disk.c')
| -rw-r--r-- | packages/sccd/files/scc-disk.c | 167 |
1 files changed, 0 insertions, 167 deletions
diff --git a/packages/sccd/files/scc-disk.c b/packages/sccd/files/scc-disk.c deleted file mode 100644 index 4fd494203a..0000000000 --- a/packages/sccd/files/scc-disk.c +++ /dev/null @@ -1,167 +0,0 @@ -/* - * Copyright (c) 2006 - * Protium Computing, Inc. All rights reserved. - * - * 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. - * 3. All advertising materials mentioning features or use of this software - * must display the following acknowledgement: - * This product includes software developed by Protium Computing, Inc. - * 4. The name of Protium Computing, Inc. may not be used to endorse or - * promote products derived from this software without specific prior - * written permission. - * - * THIS SOFTWARE IS PROVIDED BY PROTIUM COMPUTING ``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 PROTIUM COMPUTING 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 <stdio.h> -#include <fcntl.h> -#include <unistd.h> -#include <stdlib.h> -#include <string.h> -#include <strings.h> -#include <errno.h> -#include <sys/types.h> -#include <sys/stat.h> -#include <sys/un.h> -#include <sys/syslog.h> -#include <sys/param.h> - -struct watch_table { - char *wt_path; - int wt_status; - int wt_reads; - int wt_writes; -#define WT_INVALID 0 -#define WT_VALID 1 -#define WT_CHECK 2 -} iowt[] = { - { "/sys/block/hda/stat", WT_CHECK, 0, 0}, - { "/sys/block/hdb/stat", WT_CHECK, 0, 0}, - { "/sys/block/hdc/stat", WT_CHECK, 0, 0}, - { "/sys/block/hdd/stat", WT_CHECK, 0, 0}, - { NULL, WT_INVALID, -1, -1} -}; - -/* - * disk_activity() returns back the total number of read and writes done - * by the devices listed in the io watch table since the last call to - * disk_activity. The number of reads and writes are determined by - * opening and reading each of the valid files listed in the io watch - * table.The number of reads and writes are stored in the io watch table so - * that the next call to this routine can compare the current number of read - * and writes to those stored in the io watch table. The difference for - * each device is summed in the activity variable. The routine lazy - * evaluates the existance of the devices in the table. - * - * For the storcenter, we are only concerned with internal drives. - * - * The wt_path element must point at a diskstat file in the sysfs filesystem. - * File format can be found at: /usr/src/linux/Documentation/iostats.txt - * For this routine: - * nr, nw - number read and writes - * nmr, nmw - number of merged reads and writes - * nsr, nsw - number of the sectors read and written - * tr, tw - time spent reading and writing - * nio - raw number of ios - * tio, wtio - time spent and weighted time spent doing io - */ -int -disk_activity() -{ - int activity = 0; - char mesg[256]; - int rc, nr, nmr, nsr, tr, nw, nmw, nsw, tw, nio, tio, wtio; - FILE *f; - - struct stat st; - struct watch_table *w; - - for (w = iowt; w->wt_path; w++) { - /* - * If status ids set to check, do the lazy existence - * evaluation. If stat fails set to invalid. Don't - * worry about perms here. - */ - if ((w->wt_status == WT_CHECK) && - (stat(w->wt_path, &st) < 0)) { - sprintf(mesg, "%s not available", w->wt_path); - syslog(LOG_INFO, mesg); - w->wt_status = WT_INVALID; - } - - /* - * Short circuit the loop if invalid. - */ - if (w->wt_status == WT_INVALID) - continue; - - /* - * If it can't be opened rdonly, set to invalid - */ - if ((f = fopen(w->wt_path, "r")) < 0) { - sprintf(mesg, "Unable to open %s, no longer watching", - w->wt_path); - syslog(LOG_INFO, mesg); - w->wt_status = WT_INVALID; - continue; - } - - rc = fscanf(f, "%d %d %d %d %d %d %d %d %d %d %d", - &nr, &nmr, &nsr, &tr, - &nw, &nmw, &nsw, &tw, - &nio, &tio, &wtio); - - fclose(f); - - if (rc != 11) { - sprintf(mesg, "Unable to read %s", w->wt_path); - syslog(LOG_INFO, mesg); - continue; - } - - /* - * If we haven't seen any activity on this device before - * then just save the values and go on. This, although - * not strictly necessary, prevents the initial call to - * disk_activity returning back the base set io activity. - * Remember it takes two calls to get a true difference. - */ - if ((w->wt_reads == 0) && (w->wt_writes == 0)) { - w->wt_reads = nr; - w->wt_writes = nw; - continue; - } - - activity += (nr - w->wt_reads); - activity += (nw - w->wt_writes); - - w->wt_reads = nr; - w->wt_writes = nw; - - /* - printf("%s: %d %d %d %d %d %d %d %d %d %d %d\n", - w->wt_path, - nr, nmr, nsr, tr, - nw, nmw, nsw, tw, - nio, tio, wtio); - */ - } - - return(activity); -} |