b3608ae18f
The index() and rindex() functions were marked LEGACY in the 2001 revision of POSIX and were subsequently removed from the 2008 revision. The strchr() and strrchr() functions are part of the C standard. This makes the source code a lot more consistent, as most of these C files also call into other str*() routines. In fact, about a dozen already perform strchr() calls.
322 lines
9.6 KiB
C
322 lines
9.6 KiB
C
/*
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* Copyright (c) 1998 Kenneth D. Merry.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/*-
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* Copyright (c) 1980, 1992, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#ifdef lint
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static const char sccsid[] = "@(#)disks.c 8.1 (Berkeley) 6/6/93";
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#endif
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#include <sys/types.h>
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#include <sys/devicestat.h>
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#include <sys/resource.h>
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#include <ctype.h>
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#include <devstat.h>
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#include <err.h>
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#include <stdlib.h>
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#include <string.h>
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#include "systat.h"
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#include "extern.h"
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#include "devs.h"
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typedef enum {
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DS_MATCHTYPE_NONE,
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DS_MATCHTYPE_SPEC,
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DS_MATCHTYPE_PATTERN
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} last_match_type;
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last_match_type last_type;
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struct device_selection *dev_select;
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long generation;
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int num_devices, num_selected;
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int num_selections;
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long select_generation;
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struct devstat_match *matches = NULL;
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int num_matches = 0;
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char **specified_devices;
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int num_devices_specified = 0;
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static int dsmatchselect(const char *args, devstat_select_mode select_mode,
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int maxshowdevs, struct statinfo *s1);
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static int dsselect(const char *args, devstat_select_mode select_mode,
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int maxshowdevs, struct statinfo *s1);
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int
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dsinit(int maxshowdevs, struct statinfo *s1, struct statinfo *s2 __unused,
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struct statinfo *s3 __unused)
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{
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/*
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* Make sure that the userland devstat version matches the kernel
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* devstat version. If not, exit and print a message informing
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* the user of his mistake.
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*/
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if (devstat_checkversion(NULL) < 0)
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errx(1, "%s", devstat_errbuf);
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generation = 0;
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num_devices = 0;
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num_selected = 0;
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num_selections = 0;
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select_generation = 0;
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last_type = DS_MATCHTYPE_NONE;
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if (devstat_getdevs(NULL, s1) == -1)
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errx(1, "%s", devstat_errbuf);
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num_devices = s1->dinfo->numdevs;
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generation = s1->dinfo->generation;
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dev_select = NULL;
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/*
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* At this point, selectdevs will almost surely indicate that the
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* device list has changed, so we don't look for return values of 0
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* or 1. If we get back -1, though, there is an error.
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*/
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if (devstat_selectdevs(&dev_select, &num_selected, &num_selections,
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&select_generation, generation, s1->dinfo->devices, num_devices,
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NULL, 0, NULL, 0, DS_SELECT_ADD, maxshowdevs, 0) == -1)
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errx(1, "%d %s", __LINE__, devstat_errbuf);
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return(1);
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}
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int
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dscmd(const char *cmd, const char *args, int maxshowdevs, struct statinfo *s1)
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{
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int retval;
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if (prefix(cmd, "display") || prefix(cmd, "add"))
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return(dsselect(args, DS_SELECT_ADDONLY, maxshowdevs, s1));
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if (prefix(cmd, "ignore") || prefix(cmd, "delete"))
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return(dsselect(args, DS_SELECT_REMOVE, maxshowdevs, s1));
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if (prefix(cmd, "show") || prefix(cmd, "only"))
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return(dsselect(args, DS_SELECT_ONLY, maxshowdevs, s1));
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if (prefix(cmd, "type") || prefix(cmd, "match"))
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return(dsmatchselect(args, DS_SELECT_ONLY, maxshowdevs, s1));
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if (prefix(cmd, "refresh")) {
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retval = devstat_selectdevs(&dev_select, &num_selected,
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&num_selections, &select_generation, generation,
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s1->dinfo->devices, num_devices,
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(last_type ==DS_MATCHTYPE_PATTERN) ? matches : NULL,
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(last_type ==DS_MATCHTYPE_PATTERN) ? num_matches : 0,
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(last_type == DS_MATCHTYPE_SPEC) ?specified_devices : NULL,
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(last_type == DS_MATCHTYPE_SPEC) ?num_devices_specified : 0,
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(last_type == DS_MATCHTYPE_NONE) ? DS_SELECT_ADD :
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DS_SELECT_ADDONLY, maxshowdevs, 0);
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if (retval == -1) {
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warnx("%s", devstat_errbuf);
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return(0);
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} else if (retval == 1)
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return(2);
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}
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if (prefix(cmd, "drives")) {
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int i;
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move(CMDLINE, 0);
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clrtoeol();
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for (i = 0; i < num_devices; i++) {
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printw("%s%d ", s1->dinfo->devices[i].device_name,
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s1->dinfo->devices[i].unit_number);
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}
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return(1);
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}
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return(0);
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}
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static int
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dsmatchselect(const char *args, devstat_select_mode select_mode, int maxshowdevs,
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struct statinfo *s1)
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{
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char **tempstr, *tmpstr, *tmpstr1;
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char *tstr[100];
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int num_args = 0;
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int i;
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int retval = 0;
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/*
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* Break the (pipe delimited) input string out into separate
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* strings.
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*/
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tmpstr = tmpstr1 = strdup(args);
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for (tempstr = tstr, num_args = 0;
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(*tempstr = strsep(&tmpstr1, "|")) != NULL && (num_args < 100);
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num_args++)
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if (**tempstr != '\0')
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if (++tempstr >= &tstr[100])
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break;
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free(tmpstr);
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if (num_args > 99) {
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warnx("dsmatchselect: too many match arguments");
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return(0);
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}
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/*
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* If we've gone through the matching code before, clean out
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* previously used memory.
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*/
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if (num_matches > 0) {
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free(matches);
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matches = NULL;
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num_matches = 0;
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}
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for (i = 0; i < num_args; i++) {
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if (devstat_buildmatch(tstr[i], &matches, &num_matches) != 0) {
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warnx("%s", devstat_errbuf);
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return(0);
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}
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}
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if (num_args > 0) {
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last_type = DS_MATCHTYPE_PATTERN;
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retval = devstat_selectdevs(&dev_select, &num_selected,
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&num_selections, &select_generation, generation,
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s1->dinfo->devices, num_devices, matches, num_matches,
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NULL, 0, select_mode, maxshowdevs, 0);
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if (retval == -1)
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err(1, "device selection error");
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else if (retval == 1)
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return(2);
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}
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return(1);
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}
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static int
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dsselect(const char *args, devstat_select_mode select_mode, int maxshowdevs,
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struct statinfo *s1)
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{
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char *cp, *tmpstr, *tmpstr1, *buffer;
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int i;
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int retval = 0;
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/*
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* If we've gone through this code before, free previously
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* allocated resources.
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*/
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if (num_devices_specified > 0) {
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for (i = 0; i < num_devices_specified; i++)
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free(specified_devices[i]);
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free(specified_devices);
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specified_devices = NULL;
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num_devices_specified = 0;
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}
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/* do an initial malloc */
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specified_devices = (char **)malloc(sizeof(char *));
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tmpstr = tmpstr1 = strdup(args);
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cp = strchr(tmpstr1, '\n');
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if (cp)
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*cp = '\0';
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for (;;) {
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for (cp = tmpstr1; *cp && isspace(*cp); cp++)
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;
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tmpstr1 = cp;
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for (; *cp && !isspace(*cp); cp++)
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;
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if (*cp)
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*cp++ = '\0';
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if (cp - args == 0)
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break;
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for (i = 0; i < num_devices; i++) {
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asprintf(&buffer, "%s%d", dev_select[i].device_name,
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dev_select[i].unit_number);
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if (strcmp(buffer, tmpstr1) == 0) {
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num_devices_specified++;
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specified_devices =(char **)realloc(
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specified_devices,
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sizeof(char *) *
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num_devices_specified);
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specified_devices[num_devices_specified -1]=
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strdup(tmpstr1);
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free(buffer);
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break;
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}
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else
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free(buffer);
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}
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if (i >= num_devices)
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error("%s: unknown drive", args);
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args = cp;
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}
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free(tmpstr);
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if (num_devices_specified > 0) {
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last_type = DS_MATCHTYPE_SPEC;
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retval = devstat_selectdevs(&dev_select, &num_selected,
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&num_selections, &select_generation, generation,
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s1->dinfo->devices, num_devices, NULL, 0,
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specified_devices, num_devices_specified,
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select_mode, maxshowdevs, 0);
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if (retval == -1)
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err(1, "%s", devstat_errbuf);
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else if (retval == 1)
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return(2);
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}
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return(1);
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}
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