diff options
Diffstat (limited to 'usr.bin/systat/devs.c')
| -rw-r--r-- | usr.bin/systat/devs.c | 321 |
1 files changed, 321 insertions, 0 deletions
diff --git a/usr.bin/systat/devs.c b/usr.bin/systat/devs.c new file mode 100644 index 0000000..3c74fb7 --- /dev/null +++ b/usr.bin/systat/devs.c @@ -0,0 +1,321 @@ +/* + * Copyright (c) 1998 Kenneth D. Merry. + * 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. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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 THE AUTHOR OR CONTRIBUTORS 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. + */ +/*- + * Copyright (c) 1980, 1992, 1993 + * The Regents of the University of California. 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. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 THE REGENTS OR CONTRIBUTORS 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 <sys/cdefs.h> + +__FBSDID("$FreeBSD$"); + +#ifdef lint +static const char sccsid[] = "@(#)disks.c 8.1 (Berkeley) 6/6/93"; +#endif + +#include <sys/types.h> +#include <sys/devicestat.h> +#include <sys/resource.h> + +#include <ctype.h> +#include <devstat.h> +#include <err.h> +#include <stdlib.h> +#include <string.h> + +#include "systat.h" +#include "extern.h" +#include "devs.h" + +typedef enum { + DS_MATCHTYPE_NONE, + DS_MATCHTYPE_SPEC, + DS_MATCHTYPE_PATTERN +} last_match_type; + +last_match_type last_type; +struct device_selection *dev_select; +long generation; +int num_devices, num_selected; +int num_selections; +long select_generation; +struct devstat_match *matches = NULL; +int num_matches = 0; +char **specified_devices; +int num_devices_specified = 0; + +static int dsmatchselect(const char *args, devstat_select_mode select_mode, + int maxshowdevs, struct statinfo *s1); +static int dsselect(const char *args, devstat_select_mode select_mode, + int maxshowdevs, struct statinfo *s1); + +int +dsinit(int maxshowdevs, struct statinfo *s1, struct statinfo *s2 __unused, + struct statinfo *s3 __unused) +{ + + /* + * Make sure that the userland devstat version matches the kernel + * devstat version. If not, exit and print a message informing + * the user of his mistake. + */ + if (devstat_checkversion(NULL) < 0) + errx(1, "%s", devstat_errbuf); + + generation = 0; + num_devices = 0; + num_selected = 0; + num_selections = 0; + select_generation = 0; + last_type = DS_MATCHTYPE_NONE; + + if (devstat_getdevs(NULL, s1) == -1) + errx(1, "%s", devstat_errbuf); + + num_devices = s1->dinfo->numdevs; + generation = s1->dinfo->generation; + + dev_select = NULL; + + /* + * At this point, selectdevs will almost surely indicate that the + * device list has changed, so we don't look for return values of 0 + * or 1. If we get back -1, though, there is an error. + */ + if (devstat_selectdevs(&dev_select, &num_selected, &num_selections, + &select_generation, generation, s1->dinfo->devices, num_devices, + NULL, 0, NULL, 0, DS_SELECT_ADD, maxshowdevs, 0) == -1) + errx(1, "%d %s", __LINE__, devstat_errbuf); + + return(1); +} + +int +dscmd(const char *cmd, const char *args, int maxshowdevs, struct statinfo *s1) +{ + int retval; + + if (prefix(cmd, "display") || prefix(cmd, "add")) + return(dsselect(args, DS_SELECT_ADDONLY, maxshowdevs, s1)); + if (prefix(cmd, "ignore") || prefix(cmd, "delete")) + return(dsselect(args, DS_SELECT_REMOVE, maxshowdevs, s1)); + if (prefix(cmd, "show") || prefix(cmd, "only")) + return(dsselect(args, DS_SELECT_ONLY, maxshowdevs, s1)); + if (prefix(cmd, "type") || prefix(cmd, "match")) + return(dsmatchselect(args, DS_SELECT_ONLY, maxshowdevs, s1)); + if (prefix(cmd, "refresh")) { + retval = devstat_selectdevs(&dev_select, &num_selected, + &num_selections, &select_generation, generation, + s1->dinfo->devices, num_devices, + (last_type ==DS_MATCHTYPE_PATTERN) ? matches : NULL, + (last_type ==DS_MATCHTYPE_PATTERN) ? num_matches : 0, + (last_type == DS_MATCHTYPE_SPEC) ?specified_devices : NULL, + (last_type == DS_MATCHTYPE_SPEC) ?num_devices_specified : 0, + (last_type == DS_MATCHTYPE_NONE) ? DS_SELECT_ADD : + DS_SELECT_ADDONLY, maxshowdevs, 0); + if (retval == -1) { + warnx("%s", devstat_errbuf); + return(0); + } else if (retval == 1) + return(2); + } + if (prefix(cmd, "drives")) { + int i; + move(CMDLINE, 0); + clrtoeol(); + for (i = 0; i < num_devices; i++) { + printw("%s%d ", s1->dinfo->devices[i].device_name, + s1->dinfo->devices[i].unit_number); + } + return(1); + } + return(0); +} + +static int +dsmatchselect(const char *args, devstat_select_mode select_mode, int maxshowdevs, + struct statinfo *s1) +{ + char **tempstr, *tmpstr, *tmpstr1; + char *tstr[100]; + int num_args = 0; + int i; + int retval = 0; + + /* + * Break the (pipe delimited) input string out into separate + * strings. + */ + tmpstr = tmpstr1 = strdup(args); + for (tempstr = tstr, num_args = 0; + (*tempstr = strsep(&tmpstr1, "|")) != NULL && (num_args < 100); + num_args++) + if (**tempstr != '\0') + if (++tempstr >= &tstr[100]) + break; + free(tmpstr); + + if (num_args > 99) { + warnx("dsmatchselect: too many match arguments"); + return(0); + } + + /* + * If we've gone through the matching code before, clean out + * previously used memory. + */ + if (num_matches > 0) { + free(matches); + matches = NULL; + num_matches = 0; + } + + for (i = 0; i < num_args; i++) { + if (devstat_buildmatch(tstr[i], &matches, &num_matches) != 0) { + warnx("%s", devstat_errbuf); + return(0); + } + } + if (num_args > 0) { + + last_type = DS_MATCHTYPE_PATTERN; + + retval = devstat_selectdevs(&dev_select, &num_selected, + &num_selections, &select_generation, generation, + s1->dinfo->devices, num_devices, matches, num_matches, + NULL, 0, select_mode, maxshowdevs, 0); + if (retval == -1) + err(1, "device selection error"); + else if (retval == 1) + return(2); + } + return(1); +} + +static int +dsselect(const char *args, devstat_select_mode select_mode, int maxshowdevs, + struct statinfo *s1) +{ + char *cp, *tmpstr, *tmpstr1, *buffer; + int i; + int retval = 0; + + /* + * If we've gone through this code before, free previously + * allocated resources. + */ + if (num_devices_specified > 0) { + for (i = 0; i < num_devices_specified; i++) + free(specified_devices[i]); + free(specified_devices); + specified_devices = NULL; + num_devices_specified = 0; + } + + /* do an initial malloc */ + specified_devices = (char **)malloc(sizeof(char *)); + + tmpstr = tmpstr1 = strdup(args); + cp = strchr(tmpstr1, '\n'); + if (cp) + *cp = '\0'; + for (;;) { + for (cp = tmpstr1; *cp && isspace(*cp); cp++) + ; + tmpstr1 = cp; + for (; *cp && !isspace(*cp); cp++) + ; + if (*cp) + *cp++ = '\0'; + if (cp - args == 0) + break; + for (i = 0; i < num_devices; i++) { + asprintf(&buffer, "%s%d", dev_select[i].device_name, + dev_select[i].unit_number); + if (strcmp(buffer, tmpstr1) == 0) { + + num_devices_specified++; + + specified_devices =(char **)realloc( + specified_devices, + sizeof(char *) * + num_devices_specified); + specified_devices[num_devices_specified -1]= + strdup(tmpstr1); + free(buffer); + + break; + } + else + free(buffer); + } + if (i >= num_devices) + error("%s: unknown drive", args); + args = cp; + } + free(tmpstr); + + if (num_devices_specified > 0) { + last_type = DS_MATCHTYPE_SPEC; + + retval = devstat_selectdevs(&dev_select, &num_selected, + &num_selections, &select_generation, generation, + s1->dinfo->devices, num_devices, NULL, 0, + specified_devices, num_devices_specified, + select_mode, maxshowdevs, 0); + if (retval == -1) + err(1, "%s", devstat_errbuf); + else if (retval == 1) + return(2); + } + return(1); +} |
