/*
 * Copyright (c) 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.
 * 3. 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.
 *
 * @(#) Copyright (c) 1993 The Regents of the University of California.  All rights reserved.
 * @(#)from: sysctl.c   8.1 (Berkeley) 6/6/93
 * $FreeBSD: src/sbin/sysctl/sysctl.c,v 1.25.2.11 2003/05/01 22:48:08 trhodes Exp $
 */

#include <sys/types.h>
#include <sys/stat.h>
#include <sys/sysctl.h>
#include <sys/resource.h>
#include <sys/sensors.h>
#include <sys/param.h>

#ifdef __x86_64__
#include <sys/efi.h>
#include <machine/metadata.h>
#endif

#include <ctype.h>
#include <err.h>
#include <errno.h>
#include <inttypes.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>

static int      aflag, bflag, dflag, eflag, Nflag, nflag, oflag, xflag;
static int      iflag, qflag;

static int      oidfmt(int *, size_t, char *, u_int *);
static int      parse(const char *);
static int      show_var(int *, size_t);
static int      sysctl_all(int *, size_t);
static void     set_T_dev_t(const char *, void **, size_t *);
static int      set_IK(const char *, int *);

static void
usage(void)
{

        fprintf(stderr, "%s\n%s\n",
            "usage: sysctl [-AbdeiNnoqwxX] variable[=value] ...",
            "       sysctl [-bdeiNnoqwxX] -a");
        exit(1);
}

int
main(int argc, char **argv)
{
        int ch;
        int warncount;

        setbuf(stdout,0);
        setbuf(stderr,0);

        while ((ch = getopt(argc, argv, "AabdeiNnoqwxX")) != -1) {
                switch (ch) {
                case 'A':
                        /* compatibility */
                        aflag = oflag = 1;
                        break;
                case 'a':
                        aflag = 1;
                        break;
                case 'b':
                        bflag = 1;
                        break;
                case 'd':
                        dflag = 1;
                        break;
                case 'e':
                        eflag = 1;
                        break;
                case 'i':
                        iflag = 1;
                        break;
                case 'N':
                        Nflag = 1;
                        break;
                case 'n':
                        nflag = 1;
                        break;
                case 'o':
                        oflag = 1;
                        break;
                case 'q':
                        qflag = 1;
                        break;
                case 'w':
                        /* compatibility */
                        /* ignored */
                        break;
                case 'X':
                        /* compatibility */
                        aflag = xflag = 1;
                        break;
                case 'x':
                        xflag = 1;
                        break;
                default:
                        usage();
                }
        }
        argc -= optind;
        argv += optind;

        if (Nflag && nflag)
                usage();
        if (aflag && argc == 0)
                exit(sysctl_all(0, 0));
        if (argc == 0)
                usage();
        warncount = 0;
        while (argc-- > 0)
                warncount += parse(*argv++);

        return warncount;
}

/*
 * Parse a name into a MIB entry.
 * Lookup and print out the MIB entry if it exists.
 * Set a new value if requested.
 */
static int
parse(const char *string)
{
        size_t len;
        int i, j;
        void *newval = NULL;
        int8_t i8val;
        uint8_t u8val;
        int16_t i16val;
        uint16_t u16val;
        int32_t i32val;
        uint32_t u32val;
        int64_t i64val;
        uint64_t u64val;
        int intval;
        unsigned int uintval;
        long longval;
        unsigned long ulongval;
        size_t newsize = 0;
        int mib[CTL_MAXNAME];
        char *cp, fmt[BUFSIZ];
        const char *name;
        char *name_allocated = NULL;
        u_int kind;

        if ((cp = strchr(string, '=')) != NULL) {
                if ((name_allocated = malloc(cp - string + 1)) == NULL)
                        err(1, "malloc failed");
                strlcpy(name_allocated, string, cp - string + 1);
                name = name_allocated;
                
                while (isspace(*++cp))
                        ;

                newval = cp;
                newsize = strlen(cp);
        } else {
                name = string;
        }

        len = CTL_MAXNAME;
        if (sysctlnametomib(name, mib, &len) < 0) {
                if (iflag)
                        return 0;
                if (qflag)
                        return 1;
                if (errno == ENOENT) {
                        errx(1, "unknown oid '%s'", name);
                } else {
                        err(1, "sysctlnametomib(\"%s\")", name);
                }
        }

        if (oidfmt(mib, len, fmt, &kind)) {
                warn("couldn't find format of oid '%s'", name);
                if (iflag)
                        return 1;
                exit(1);
        }

        if (newval == NULL) {
                if ((kind & CTLTYPE) == CTLTYPE_NODE) {
                        sysctl_all(mib, len);
                } else {
                        i = show_var(mib, len);
                        if (!i && !bflag)
                                putchar('\n');
                }
        } else {
                if ((kind & CTLTYPE) == CTLTYPE_NODE)
                        errx(1, "oid '%s' isn't a leaf node", name);

                if (!(kind&CTLFLAG_WR))
                        errx(1, "oid '%s' is read only", name);
        
                switch (kind & CTLTYPE) {
                        case CTLTYPE_INT:
                        case CTLTYPE_BIT32(0):
                        case CTLTYPE_BIT64(0):
                                if (!(strcmp(fmt, "IK") == 0)) {
                                        if (!set_IK(newval, &intval))
                                                errx(1, "invalid value '%s'",
                                                    (char *)newval);
                                } else {
                                        intval = (int) strtol(newval, NULL, 0);
                                }
                                newval = &intval;
                                newsize = sizeof(intval);
                                break;
                        case CTLTYPE_UINT:
                                uintval = (int) strtoul(newval, NULL, 0);
                                newval = &uintval;
                                newsize = sizeof uintval;
                                break;
                        case CTLTYPE_LONG:
                                longval = strtol(newval, NULL, 0);
                                newval = &longval;
                                newsize = sizeof longval;
                                break;
                        case CTLTYPE_ULONG:
                                ulongval = strtoul(newval, NULL, 0);
                                newval = &ulongval;
                                newsize = sizeof ulongval;
                                break;
                        case CTLTYPE_STRING:
                                break;
                        case CTLTYPE_S8:
                                i8val = (int8_t)strtol(newval, NULL, 0);
                                newval = &i8val;
                                newsize = sizeof(i8val);
                                break;
                        case CTLTYPE_S16:
                                i16val = (int16_t)strtol(newval, NULL, 0);
                                newval = &i16val;
                                newsize = sizeof(i16val);
                                break;
                        case CTLTYPE_S32:
                                i32val = (int32_t)strtol(newval, NULL, 0);
                                newval = &i32val;
                                newsize = sizeof(i32val);
                                break;
                        case CTLTYPE_S64:
                                i64val = strtoimax(newval, NULL, 0);
                                newval = &i64val;
                                newsize = sizeof(i64val);
                                break;
                        case CTLTYPE_U8:
                                u8val = (uint8_t)strtoul(newval, NULL, 0);
                                newval = &u8val;
                                newsize = sizeof(u8val);
                                break;
                        case CTLTYPE_U16:
                                u16val = (uint16_t)strtoul(newval, NULL, 0);
                                newval = &u16val;
                                newsize = sizeof(u16val);
                                break;
                        case CTLTYPE_U32:
                                u32val = (uint32_t)strtoul(newval, NULL, 0);
                                newval = &u32val;
                                newsize = sizeof(u32val);
                                break;
                        case CTLTYPE_U64:
                                u64val = strtoumax(newval, NULL, 0);
                                newval = &u64val;
                                newsize = sizeof(u64val);
                                break;
                        case CTLTYPE_OPAQUE:
                                if (strcmp(fmt, "T,dev_t") == 0 ||
                                    strcmp(fmt, "T,udev_t") == 0
                                ) {
                                        set_T_dev_t((char*)newval, &newval,
                                                    &newsize);
                                        break;
                                }
                                /* FALLTHROUGH */
                        default:
                                errx(1, "oid '%s' is type %d,"
                                        " cannot set that", name,
                                        kind & CTLTYPE);
                }

                i = show_var(mib, len);
                if (sysctl(mib, len, 0, 0, newval, newsize) == -1) {
                        if (!i && !bflag)
                                putchar('\n');
                        switch (errno) {
                        case EOPNOTSUPP:
                                errx(1, "%s: value is not available", 
                                        string);
                        case ENOTDIR:
                                errx(1, "%s: specification is incomplete", 
                                        string);
                        case ENOMEM:
                                errx(1, "%s: type is unknown to this program", 
                                        string);
                        default:
                                warn("%s", string);
                                return 1;
                        }
                }
                if (!bflag)
                        printf(" -> ");
                i = nflag;
                nflag = 1;
                j = show_var(mib, len);
                if (!j && !bflag)
                        putchar('\n');
                nflag = i;
        }

        if (name_allocated != NULL)
                free(name_allocated);

        return 0;
}

/* These functions will dump out various interesting structures. */

static int
S_clockinfo(size_t l2, void *p)
{
        struct clockinfo *ci = (struct clockinfo*)p;
        if (l2 != sizeof(*ci))
                err(1, "S_clockinfo %zu != %zu", l2, sizeof(*ci));
        printf("{ hz = %d, tick = %d, tickadj = %d, profhz = %d, stathz = %d }",
                ci->hz, ci->tick, ci->tickadj, ci->profhz, ci->stathz);
        return (0);
}

static int
S_loadavg(size_t l2, void *p)
{
        struct loadavg *tv = (struct loadavg*)p;

        if (l2 != sizeof(*tv))
                err(1, "S_loadavg %zu != %zu", l2, sizeof(*tv));

        printf("{ %.2f %.2f %.2f }",
                (double)tv->ldavg[0]/(double)tv->fscale,
                (double)tv->ldavg[1]/(double)tv->fscale,
                (double)tv->ldavg[2]/(double)tv->fscale);
        return (0);
}

static int
S_timespec(size_t l2, void *p)
{
        struct timespec *ts = (struct timespec*)p;
        time_t tv_sec;
        char *p1, *p2;

        if (l2 != sizeof(*ts))
                err(1, "S_timespec %zu != %zu", l2, sizeof(*ts));
        printf("{ sec = %ld, nsec = %ld } ",
                ts->tv_sec, ts->tv_nsec);
        tv_sec = ts->tv_sec;
        p1 = strdup(ctime(&tv_sec));
        for (p2=p1; *p2 ; p2++)
                if (*p2 == '\n')
                        *p2 = '\0';
        fputs(p1, stdout);
        return (0);
}

static int
S_timeval(size_t l2, void *p)
{
        struct timeval *tv = (struct timeval*)p;
        time_t tv_sec;
        char *p1, *p2;

        if (l2 != sizeof(*tv))
                err(1, "S_timeval %zu != %zu", l2, sizeof(*tv));
        printf("{ sec = %ld, usec = %ld } ",
                tv->tv_sec, tv->tv_usec);
        tv_sec = tv->tv_sec;
        p1 = strdup(ctime(&tv_sec));
        for (p2=p1; *p2 ; p2++)
                if (*p2 == '\n')
                        *p2 = '\0';
        fputs(p1, stdout);
        return (0);
}

static int
S_sensor(size_t l2, void *p)
{
        struct sensor *s = (struct sensor *)p;

        if (l2 != sizeof(*s)) {
                warnx("S_sensor %zu != %zu", l2, sizeof(*s));
                return (1);
        }

        if (s->flags & SENSOR_FINVALID) {
                /*
                 * XXX: with this flag, the node should be entirely ignored,
                 * but as the magic-based sysctl(8) is not too flexible, we
                 * simply have to print out that the sensor is invalid.
                 */
                printf("invalid");
                return (0);
        }

        if (s->flags & SENSOR_FUNKNOWN)
                printf("unknown");
        else {
                switch (s->type) {
                case SENSOR_TEMP:
                        printf("%.2f degC",
                            (s->value - 273150000) / 1000000.0);
                        break;
                case SENSOR_FANRPM:
                        printf("%jd RPM", (intmax_t)s->value);
                        break;
                case SENSOR_VOLTS_DC:
                        printf("%.2f VDC", s->value / 1000000.0);
                        break;
                case SENSOR_WATTS:
                        printf("%.2f W", s->value / 1000000.0);
                        break;
                case SENSOR_AMPS:
                        printf("%.2f A", s->value / 1000000.0);
                        break;
                case SENSOR_WATTHOUR:
                        printf("%.2f Wh", s->value / 1000000.0);
                        break;
                case SENSOR_AMPHOUR:
                        printf("%.2f Ah", s->value / 1000000.0);
                        break;
                case SENSOR_INDICATOR:
                        printf("%s", s->value ? "On" : "Off");
                        break;
                case SENSOR_FREQ:
                        printf("%jd Hz", (intmax_t)s->value);
                        break;
                case SENSOR_ECC:
                case SENSOR_INTEGER:
                        printf("%jd", (intmax_t)s->value);
                        break;
                case SENSOR_PERCENT:
                        printf("%.2f%%", s->value / 1000.0);
                        break;
                case SENSOR_LUX:
                        printf("%.2f lx", s->value / 1000000.0);
                        break;
                case SENSOR_DRIVE:
                {
                        const char *name;

                        switch (s->value) {
                        case SENSOR_DRIVE_EMPTY:
                                name = "empty";
                                break;
                        case SENSOR_DRIVE_READY:
                                name = "ready";
                                break;
                        case SENSOR_DRIVE_POWERUP:
                                name = "powering up";
                                break;
                        case SENSOR_DRIVE_ONLINE:
                                name = "online";
                                break;
                        case SENSOR_DRIVE_IDLE:
                                name = "idle";
                                break;
                        case SENSOR_DRIVE_ACTIVE:
                                name = "active";
                                break;
                        case SENSOR_DRIVE_REBUILD:
                                name = "rebuilding";
                                break;
                        case SENSOR_DRIVE_POWERDOWN:
                                name = "powering down";
                                break;
                        case SENSOR_DRIVE_FAIL:
                                name = "failed";
                                break;
                        case SENSOR_DRIVE_PFAIL:
                                name = "degraded";
                                break;
                        default:
                                name = "unknown";
                                break;
                        }
                        printf("%s", name);
                        break;
                }
                case SENSOR_TIMEDELTA:
                        printf("%.6f secs", s->value / 1000000000.0);
                        break;
                default:
                        printf("unknown");
                }
        }

        if (s->desc[0] != '\0')
                printf(" (%s)", s->desc);

        switch (s->status) {
        case SENSOR_S_UNSPEC:
                break;
        case SENSOR_S_OK:
                printf(", OK");
                break;
        case SENSOR_S_WARN:
                printf(", WARNING");
                break;
        case SENSOR_S_CRIT:
                printf(", CRITICAL");
                break;
        case SENSOR_S_UNKNOWN:
                printf(", UNKNOWN");
                break;
        }

        if (s->tv.tv_sec) {
                time_t t = s->tv.tv_sec;
                char ct[26];

                ctime_r(&t, ct);
                ct[19] = '\0';
                printf(", %s.%03ld", ct, s->tv.tv_usec / 1000);
        }

        return (0);
}

#ifdef __x86_64__
static int
S_efi_map(size_t l2, void *p)
{
        struct efi_map_header *efihdr;
        struct efi_md *map;
        const char *type;
        size_t efisz;
        int ndesc, i;

        static const char *types[] = {
                "Reserved",
                "LoaderCode",
                "LoaderData",
                "BootServicesCode",
                "BootServicesData",
                "RuntimeServicesCode",
                "RuntimeServicesData",
                "ConventionalMemory",
                "UnusableMemory",
                "ACPIReclaimMemory",
                "ACPIMemoryNVS",
                "MemoryMappedIO",
                "MemoryMappedIOPortSpace",
                "PalCode"
        };

        /*
         * Memory map data provided by UEFI via the GetMemoryMap
         * Boot Services API.
         */
        if (l2 < sizeof(*efihdr)) {
                warnx("S_efi_map length less than header");
                return (1);
        }
        efihdr = p;
        efisz = (sizeof(struct efi_map_header) + 0xf) & ~0xf;
        map = (struct efi_md *)((uint8_t *)efihdr + efisz);

        if (efihdr->descriptor_size == 0)
                return (0);
        if (l2 != efisz + efihdr->memory_size) {
                warnx("S_efi_map length mismatch %zu vs %zu", l2, efisz +
                    efihdr->memory_size);
                return (1);
        }
        ndesc = efihdr->memory_size / efihdr->descriptor_size;

        printf("\n%23s %12s %12s %8s %4s",
            "Type", "Physical", "Virtual", "#Pages", "Attr");

        for (i = 0; i < ndesc; i++,
            map = efi_next_descriptor(map, efihdr->descriptor_size)) {
                if (map->md_type <= EFI_MD_TYPE_PALCODE)
                        type = types[map->md_type];
                else
                        type = "<INVALID>";
                printf("\n%23s %012lx %12p %08lx ", type, map->md_phys,
                    map->md_virt, map->md_pages);
                if (map->md_attr & EFI_MD_ATTR_UC)
                        printf("UC ");
                if (map->md_attr & EFI_MD_ATTR_WC)
                        printf("WC ");
                if (map->md_attr & EFI_MD_ATTR_WT)
                        printf("WT ");
                if (map->md_attr & EFI_MD_ATTR_WB)
                        printf("WB ");
                if (map->md_attr & EFI_MD_ATTR_UCE)
                        printf("UCE ");
                if (map->md_attr & EFI_MD_ATTR_WP)
                        printf("WP ");
                if (map->md_attr & EFI_MD_ATTR_RP)
                        printf("RP ");
                if (map->md_attr & EFI_MD_ATTR_XP)
                        printf("XP ");
                if (map->md_attr & EFI_MD_ATTR_RT)
                        printf("RUNTIME");
        }
        return (0);
}
#endif

static int
T_dev_t(size_t l2, void *p)
{
        dev_t *d = (dev_t *)p;
        if (l2 != sizeof(*d))
                err(1, "T_dev_T %zu != %zu", l2, sizeof(*d));
        if ((int)(*d) != -1) {
                if (minor(*d) > 255 || minor(*d) < 0)
                        printf("{ major = %d, minor = 0x%x }",
                                major(*d), minor(*d));
                else
                        printf("{ major = %d, minor = %d }",
                                major(*d), minor(*d));
        }
        return (0);
}

static void
set_T_dev_t(const char *path, void **val, size_t *size)
{
        static struct stat statb;

        if (strcmp(path, "none") && strcmp(path, "off")) {
                int rc = stat (path, &statb);
                if (rc) {
                        err(1, "cannot stat %s", path);
                }

                if (!S_ISCHR(statb.st_mode)) {
                        errx(1, "must specify a device special file.");
                }
        } else {
                statb.st_rdev = NODEV;
        }
        *val = (char*) &statb.st_rdev;
        *size = sizeof statb.st_rdev;
}

static int
set_IK(const char *str, int *val)
{
        float temp;
        int len, kelv;
        const char *p;
        char *endptr;

        if ((len = strlen(str)) == 0)
                return (0);
        p = &str[len - 1];
        if (*p == 'C' || *p == 'F') {
                temp = strtof(str, &endptr);
                if (endptr == str || endptr != p)
                        return 0;
                if (*p == 'F')
                        temp = (temp - 32) * 5 / 9;
                kelv = temp * 10 + 2732;
        } else {
                /*
                 * I would like to just use, 0 but it would make numbers
                 * like '023' which were interpreted as decimal before
                 * suddenly interpreted as octal.
                 */
                if (str[0] == '0' && (str[1] == 'x' || str[1] == 'X'))
                        kelv = (int)strtol(str, &endptr, 0);
                else
                        kelv = (int)strtol(str, &endptr, 10);
                if (endptr == str || *endptr != '\0')
                        return 0;
        }
        *val = kelv;
        return 1;
}

/*
 * These functions uses a presently undocumented interface to the kernel
 * to walk the tree and get the type so it can print the value.
 * This interface is under work and consideration, and should probably
 * be killed with a big axe by the first person who can find the time.
 * (be aware though, that the proper interface isn't as obvious as it
 * may seem, there are various conflicting requirements.
 */

static int
oidfmt(int *oid, size_t len, char *fmt, u_int *kind)
{
        int qoid[CTL_MAXNAME+2];
        u_char buf[BUFSIZ];
        int i;
        size_t j;

        qoid[0] = 0;
        qoid[1] = 4;
        memcpy(qoid + 2, oid, len * sizeof(int));

        j = sizeof(buf);
        i = sysctl(qoid, len + 2, buf, &j, 0, 0);
        if (i)
                err(1, "sysctl fmt %d %zu %d", i, j, errno);

        if (kind)
                *kind = *(u_int *)buf;

        if (fmt)
                strcpy(fmt, (char *)(buf + sizeof(u_int)));
        return 0;
}

/*
 * This formats and outputs the value of one variable
 *
 * Returns zero if anything was actually output.
 * Returns one if didn't know what to do with this.
 * Return minus one if we had errors.
 */

static int
show_var(int *oid, size_t nlen)
{
        u_char buf[BUFSIZ], *val = NULL, *p, *nul;
        char name[BUFSIZ], *fmt;
        const char *sep, *spacer;
        int qoid[CTL_MAXNAME+2];
        int i;
        size_t j, len;
        u_int kind;
        int (*func)(size_t, void *);
        int error = 0;

        qoid[0] = 0;
        memcpy(qoid + 2, oid, nlen * sizeof(int));

        qoid[1] = 1;
        j = sizeof(name);
        i = sysctl(qoid, nlen + 2, name, &j, 0, 0);
        if (i || !j)
                err(1, "sysctl name %d %zu %d", i, j, errno);

        if (Nflag) {
                printf("%s", name);
                return (0);
        }

        if (eflag)
                sep = "=";
        else
                sep = ": ";

        if (dflag) {    /* just print description */
                qoid[1] = 5;
                j = sizeof(buf);
                i = sysctl(qoid, nlen + 2, buf, &j, 0, 0);
                if (!nflag)
                        printf("%s%s", name, sep);
                printf("%s", buf);
                return(0);
        }
        /* find an estimate of how much we need for this var */
        j = 0;
        i = sysctl(oid, nlen, 0, &j, 0, 0);
        j += j; /* we want to be sure :-) */

        val = malloc(j + 1);
        if (val == NULL)
                return (1);

        len = j;
        i = sysctl(oid, nlen, val, &len, 0, 0);
        if (i || !len) {
                error = 1;
                goto done;
        }

        if (bflag) {
                fwrite(val, 1, len, stdout);
                goto done;
        }

        val[len] = '\0';
        fmt = buf;
        oidfmt(oid, nlen, fmt, &kind);
        p = val;
        switch (*fmt) {
        case 'A':
                if (!nflag)
                        printf("%s%s", name, sep);
                nul = memchr(p, '\0', len);
                fwrite(p, nul == NULL ? (int)len : nul - p, 1, stdout);
                return (0);
                
        case 'C':
                if (!nflag)
                        printf("%s%s", name, sep);
                fmt++;
                spacer = "";
                while (len >= sizeof(char)) {
                        if(*fmt == 'U')
                                printf("%s%hhu", spacer, *(unsigned char *)p);
                        else
                                printf("%s%hhd", spacer, *(char *)p);
                        spacer = " ";
                        len -= sizeof(char);
                        p += sizeof(char);
                }
                goto done;

        case 'I':
                if (!nflag)
                        printf("%s%s", name, sep);
                fmt++;
                spacer = "";
                while (len >= sizeof(int)) {
                        if(*fmt == 'U')
                                printf("%s%u", spacer, *(unsigned int *)p);
                        else if (*fmt == 'K' && *(int *)p >= 0)
                                printf("%s%.1fC", spacer, (*(int *)p - 2732) / 10.0);
                        else
                                printf("%s%d", spacer, *(int *)p);
                        spacer = " ";
                        len -= sizeof(int);
                        p += sizeof(int);
                }
                goto done;

        case 'L':
                if (!nflag)
                        printf("%s%s", name, sep);
                fmt++;
                spacer = "";
                while (len >= sizeof(long)) {
                        if(*fmt == 'U')
                                printf("%s%lu", spacer, *(unsigned long *)p);
                        else
                                printf("%s%ld", spacer, *(long *)p);
                        spacer = " ";
                        len -= sizeof(long);
                        p += sizeof(long);
                }
                goto done;

        case 'P':
                if (!nflag)
                        printf("%s%s", name, sep);
                printf("%p", *(void **)p);
                goto done;

        case 'Q':
                if (!nflag)
                        printf("%s%s", name, sep);
                fmt++;
                spacer = "";
                while (len >= sizeof(quad_t)) {
                        if(*fmt == 'U') {
                                printf("%s%ju",
                                       spacer, (uintmax_t)*(u_quad_t *)p);
                        } else {
                                printf("%s%jd",
                                       spacer, (intmax_t)*(quad_t *)p);
                        }
                        spacer = " ";
                        len -= sizeof(int64_t);
                        p += sizeof(int64_t);
                }
                goto done;

        case 'T':
        case 'S':
                if (fmt[0] == 'S' && fmt[1] != ',') {
                        if (!nflag)
                                printf("%s%s", name, sep);
                        fmt++;
                        spacer = "";
                        while (len >= sizeof(short)) {
                                if(*fmt == 'U')
                                        printf("%s%hu", spacer,
                                            *(unsigned short *)p);
                                else
                                        printf("%s%hd", spacer, *(short *)p);
                                spacer = " ";
                                len -= sizeof(short);
                                p += sizeof(short);
                        }
                        goto done;
                }
                        
                if (!oflag && !xflag) {
                        i = 0;
                        if (strcmp(fmt, "S,clockinfo") == 0)
                                func = S_clockinfo;
                        else if (strcmp(fmt, "S,timespec") == 0)
                                func = S_timespec;
                        else if (strcmp(fmt, "S,timeval") == 0)
                                func = S_timeval;
                        else if (strcmp(fmt, "S,loadavg") == 0)
                                func = S_loadavg;
                        else if (strcmp(fmt, "S,sensor") == 0)
                                func = S_sensor;
#ifdef __x86_64__
                        else if (strcmp(fmt, "S,efi_map_header") == 0)
                                func = S_efi_map;
#endif
                        else if (strcmp(fmt, "T,dev_t") == 0)
                                func = T_dev_t;
                        else if (strcmp(fmt, "T,udev_t") == 0)
                                func = T_dev_t;
                        else
                                func = NULL;
                        if (func) {
                                if (!nflag)
                                        printf("%s%s", name, sep);
                                error = (*func)(len, p);
                                goto done;
                        }
                }
                /* FALL THROUGH */
        default:
                if (!oflag && !xflag) {
                        error = 1;
                        goto done;
                }
                if (!nflag)
                        printf("%s%s", name, sep);
                printf("Format:%s Length:%zu Dump:0x", fmt, len);
                while (len-- && (xflag || p < val + 16))
                        printf("%02x", *p++);
                if (!xflag && len > 16)
                        printf("...");
                goto done;
        }

done:
        if (val != NULL)
                free(val);
        return (error);
}

static int
sysctl_all(int *oid, size_t len)
{
        int name1[22], name2[22];
        int retval;
        size_t i, l1, l2;

        name1[0] = 0;
        name1[1] = 2;
        l1 = 2;
        if (len) {
                memcpy(name1+2, oid, len * sizeof(int));
                l1 += len;
        } else {
                name1[2] = 1;
                l1++;
        }
        for (;;) {
                l2 = sizeof(name2);
                retval = sysctl(name1, l1, name2, &l2, 0, 0);
                if (retval < 0) {
                        if (errno == ENOENT)
                                return 0;
                        else
                                err(1, "sysctl(getnext) %d %zu", retval, l2);
                }

                l2 /= sizeof(int);

                if (l2 < len)
                        return 0;

                for (i = 0; i < len; i++)
                        if (name2[i] != oid[i])
                                return 0;

                retval = show_var(name2, l2);
                if (retval == 0 && !bflag)
                        putchar('\n');

                memcpy(name1+2, name2, l2 * sizeof(int));
                l1 = 2 + l2;
        }
}