Index: head/sbin/sysctl/sysctl.c =================================================================== --- head/sbin/sysctl/sysctl.c (revision 365267) +++ head/sbin/sysctl/sysctl.c (revision 365268) @@ -1,1210 +1,1235 @@ /*- * SPDX-License-Identifier: BSD-3-Clause * * 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. */ #ifndef lint static const char copyright[] = "@(#) Copyright (c) 1993\n\ The Regents of the University of California. All rights reserved.\n"; #endif /* not lint */ #ifndef lint #if 0 static char sccsid[] = "@(#)from: sysctl.c 8.1 (Berkeley) 6/6/93"; #endif static const char rcsid[] = "$FreeBSD$"; #endif /* not lint */ #include #include #include #include #include #include #include #ifdef __amd64__ #include #include #endif #if defined(__amd64__) || defined(__i386__) #include #endif #include #include #include #include #include #include #include #include #include #include #include #include static const char *conffile; static int aflag, bflag, Bflag, dflag, eflag, hflag, iflag; static int Nflag, nflag, oflag, qflag, tflag, Tflag, Wflag, xflag; static int oidfmt(int *, int, char *, u_int *); static int parsefile(const char *); static int parse(const char *, int); static int show_var(int *, int); static int sysctl_all(int *oid, int len); static int name2oid(const char *, int *); static int strIKtoi(const char *, char **, const char *); static int ctl_sign[CTLTYPE+1] = { [CTLTYPE_INT] = 1, [CTLTYPE_LONG] = 1, [CTLTYPE_S8] = 1, [CTLTYPE_S16] = 1, [CTLTYPE_S32] = 1, [CTLTYPE_S64] = 1, }; static int ctl_size[CTLTYPE+1] = { [CTLTYPE_INT] = sizeof(int), [CTLTYPE_UINT] = sizeof(u_int), [CTLTYPE_LONG] = sizeof(long), [CTLTYPE_ULONG] = sizeof(u_long), [CTLTYPE_S8] = sizeof(int8_t), [CTLTYPE_S16] = sizeof(int16_t), [CTLTYPE_S32] = sizeof(int32_t), [CTLTYPE_S64] = sizeof(int64_t), [CTLTYPE_U8] = sizeof(uint8_t), [CTLTYPE_U16] = sizeof(uint16_t), [CTLTYPE_U32] = sizeof(uint32_t), [CTLTYPE_U64] = sizeof(uint64_t), }; static const char *ctl_typename[CTLTYPE+1] = { [CTLTYPE_INT] = "integer", [CTLTYPE_UINT] = "unsigned integer", [CTLTYPE_LONG] = "long integer", [CTLTYPE_ULONG] = "unsigned long", [CTLTYPE_U8] = "uint8_t", [CTLTYPE_U16] = "uint16_t", [CTLTYPE_U32] = "uint32_t", [CTLTYPE_U64] = "uint64_t", [CTLTYPE_S8] = "int8_t", [CTLTYPE_S16] = "int16_t", [CTLTYPE_S32] = "int32_t", [CTLTYPE_S64] = "int64_t", [CTLTYPE_NODE] = "node", [CTLTYPE_STRING] = "string", [CTLTYPE_OPAQUE] = "opaque", }; static void usage(void) { (void)fprintf(stderr, "%s\n%s\n", "usage: sysctl [-bdehiNnoqTtWx] [ -B ] [-f filename] name[=value] ...", " sysctl [-bdehNnoqTtWx] [ -B ] -a"); exit(1); } int main(int argc, char **argv) { int ch; int warncount = 0; setlocale(LC_NUMERIC, ""); setbuf(stdout,0); setbuf(stderr,0); while ((ch = getopt(argc, argv, "AabB:def:hiNnoqtTwWxX")) != -1) { switch (ch) { case 'A': /* compatibility */ aflag = oflag = 1; break; case 'a': aflag = 1; break; case 'b': bflag = 1; break; case 'B': Bflag = strtol(optarg, NULL, 0); break; case 'd': dflag = 1; break; case 'e': eflag = 1; break; case 'f': conffile = optarg; break; case 'h': hflag = 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 't': tflag = 1; break; case 'T': Tflag = 1; break; case 'w': /* compatibility */ /* ignored */ break; case 'W': Wflag = 1; 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 && conffile == NULL) usage(); warncount = 0; if (conffile != NULL) warncount += parsefile(conffile); while (argc-- > 0) warncount += parse(*argv++, 0); return (warncount); } /* * Parse a single numeric value, append it to 'newbuf', and update * 'newsize'. Returns true if the value was parsed and false if the * value was invalid. Non-numeric types (strings) are handled * directly in parse(). */ static bool parse_numeric(const char *newvalstr, const char *fmt, u_int kind, void **newbufp, size_t *newsizep) { void *newbuf; const void *newval; int8_t i8val; uint8_t u8val; int16_t i16val; uint16_t u16val; int32_t i32val; uint32_t u32val; int intval; unsigned int uintval; long longval; unsigned long ulongval; int64_t i64val; uint64_t u64val; size_t valsize; char *endptr = NULL; errno = 0; switch (kind & CTLTYPE) { case CTLTYPE_INT: if (strncmp(fmt, "IK", 2) == 0) intval = strIKtoi(newvalstr, &endptr, fmt); else intval = (int)strtol(newvalstr, &endptr, 0); newval = &intval; valsize = sizeof(intval); break; case CTLTYPE_UINT: uintval = (int) strtoul(newvalstr, &endptr, 0); newval = &uintval; valsize = sizeof(uintval); break; case CTLTYPE_LONG: longval = strtol(newvalstr, &endptr, 0); newval = &longval; valsize = sizeof(longval); break; case CTLTYPE_ULONG: ulongval = strtoul(newvalstr, &endptr, 0); newval = &ulongval; valsize = sizeof(ulongval); break; case CTLTYPE_S8: i8val = (int8_t)strtol(newvalstr, &endptr, 0); newval = &i8val; valsize = sizeof(i8val); break; case CTLTYPE_S16: i16val = (int16_t)strtol(newvalstr, &endptr, 0); newval = &i16val; valsize = sizeof(i16val); break; case CTLTYPE_S32: i32val = (int32_t)strtol(newvalstr, &endptr, 0); newval = &i32val; valsize = sizeof(i32val); break; case CTLTYPE_S64: i64val = strtoimax(newvalstr, &endptr, 0); newval = &i64val; valsize = sizeof(i64val); break; case CTLTYPE_U8: u8val = (uint8_t)strtoul(newvalstr, &endptr, 0); newval = &u8val; valsize = sizeof(u8val); break; case CTLTYPE_U16: u16val = (uint16_t)strtoul(newvalstr, &endptr, 0); newval = &u16val; valsize = sizeof(u16val); break; case CTLTYPE_U32: u32val = (uint32_t)strtoul(newvalstr, &endptr, 0); newval = &u32val; valsize = sizeof(u32val); break; case CTLTYPE_U64: u64val = strtoumax(newvalstr, &endptr, 0); newval = &u64val; valsize = sizeof(u64val); break; default: /* NOTREACHED */ abort(); } if (errno != 0 || endptr == newvalstr || (endptr != NULL && *endptr != '\0')) return (false); newbuf = realloc(*newbufp, *newsizep + valsize); if (newbuf == NULL) err(1, "out of memory"); memcpy((char *)newbuf + *newsizep, newval, valsize); *newbufp = newbuf; *newsizep += valsize; return (true); } /* * 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, int lineno) { int len, i, j; const void *newval; char *newvalstr = NULL; void *newbuf; size_t newsize = Bflag; int mib[CTL_MAXNAME]; char *cp, *bufp, buf[BUFSIZ], fmt[BUFSIZ], line[BUFSIZ]; u_int kind; if (lineno) snprintf(line, sizeof(line), " at line %d", lineno); else line[0] = '\0'; cp = buf; if (snprintf(buf, BUFSIZ, "%s", string) >= BUFSIZ) { warnx("oid too long: '%s'%s", string, line); return (1); } bufp = strsep(&cp, "=:"); if (cp != NULL) { /* Tflag just lists tunables, do not allow assignment */ if (Tflag || Wflag) { warnx("Can't set variables when using -T or -W"); usage(); } while (isspace(*cp)) cp++; /* Strip a pair of " or ' if any. */ switch (*cp) { case '\"': case '\'': if (cp[strlen(cp) - 1] == *cp) cp[strlen(cp) - 1] = '\0'; cp++; } newvalstr = cp; newsize = strlen(cp); } /* Trim spaces */ cp = bufp + strlen(bufp) - 1; while (cp >= bufp && isspace((int)*cp)) { *cp = '\0'; cp--; } len = name2oid(bufp, mib); if (len < 0) { if (iflag) return (0); if (qflag) return (1); else { if (errno == ENOENT) { warnx("unknown oid '%s'%s", bufp, line); } else { warn("unknown oid '%s'%s", bufp, line); } return (1); } } if (oidfmt(mib, len, fmt, &kind)) { warn("couldn't find format of oid '%s'%s", bufp, line); if (iflag) return (1); else exit(1); } if (newvalstr == NULL || dflag) { if ((kind & CTLTYPE) == CTLTYPE_NODE) { if (dflag) { i = show_var(mib, len); if (!i && !bflag) putchar('\n'); } sysctl_all(mib, len); } else { i = show_var(mib, len); if (!i && !bflag) putchar('\n'); } } else { if ((kind & CTLTYPE) == CTLTYPE_NODE) { warnx("oid '%s' isn't a leaf node%s", bufp, line); return (1); } if (!(kind & CTLFLAG_WR)) { if (kind & CTLFLAG_TUN) { warnx("oid '%s' is a read only tunable%s", bufp, line); warnx("Tunable values are set in /boot/loader.conf"); } else warnx("oid '%s' is read only%s", bufp, line); return (1); } switch (kind & CTLTYPE) { case CTLTYPE_INT: case CTLTYPE_UINT: case CTLTYPE_LONG: case CTLTYPE_ULONG: case CTLTYPE_S8: case CTLTYPE_S16: case CTLTYPE_S32: case CTLTYPE_S64: case CTLTYPE_U8: case CTLTYPE_U16: case CTLTYPE_U32: case CTLTYPE_U64: if (strlen(newvalstr) == 0) { warnx("empty numeric value"); return (1); } /* FALLTHROUGH */ case CTLTYPE_STRING: break; default: warnx("oid '%s' is type %d," " cannot set that%s", bufp, kind & CTLTYPE, line); return (1); } newbuf = NULL; switch (kind & CTLTYPE) { case CTLTYPE_STRING: newval = newvalstr; break; default: newsize = 0; while ((cp = strsep(&newvalstr, " ,")) != NULL) { if (*cp == '\0') continue; if (!parse_numeric(cp, fmt, kind, &newbuf, &newsize)) { warnx("invalid %s '%s'%s", ctl_typename[kind & CTLTYPE], cp, line); free(newbuf); return (1); } } newval = newbuf; break; } i = show_var(mib, len); if (sysctl(mib, len, 0, 0, newval, newsize) == -1) { free(newbuf); if (!i && !bflag) putchar('\n'); switch (errno) { case EOPNOTSUPP: warnx("%s: value is not available%s", string, line); return (1); case ENOTDIR: warnx("%s: specification is incomplete%s", string, line); return (1); case ENOMEM: warnx("%s: type is unknown to this program%s", string, line); return (1); default: warn("%s%s", string, line); return (1); } } free(newbuf); if (!bflag) printf(" -> "); i = nflag; nflag = 1; j = show_var(mib, len); if (!j && !bflag) putchar('\n'); nflag = i; } return (0); } static int parsefile(const char *filename) { FILE *file; char line[BUFSIZ], *p, *pq, *pdq; int warncount = 0, lineno = 0; file = fopen(filename, "r"); if (file == NULL) err(EX_NOINPUT, "%s", filename); while (fgets(line, sizeof(line), file) != NULL) { lineno++; p = line; pq = strchr(line, '\''); pdq = strchr(line, '\"'); /* Replace the first # with \0. */ while((p = strchr(p, '#')) != NULL) { if (pq != NULL && p > pq) { if ((p = strchr(pq+1, '\'')) != NULL) *(++p) = '\0'; break; } else if (pdq != NULL && p > pdq) { if ((p = strchr(pdq+1, '\"')) != NULL) *(++p) = '\0'; break; } else if (p == line || *(p-1) != '\\') { *p = '\0'; break; } p++; } /* Trim spaces */ p = line + strlen(line) - 1; while (p >= line && isspace((int)*p)) { *p = '\0'; p--; } p = line; while (isspace((int)*p)) p++; if (*p == '\0') continue; else warncount += parse(p, lineno); } fclose(file); return (warncount); } /* 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)) { warnx("S_clockinfo %zu != %zu", l2, sizeof(*ci)); return (1); } printf(hflag ? "{ hz = %'d, tick = %'d, profhz = %'d, stathz = %'d }" : "{ hz = %d, tick = %d, profhz = %d, stathz = %d }", ci->hz, ci->tick, 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)) { warnx("S_loadavg %zu != %zu", l2, sizeof(*tv)); return (1); } printf(hflag ? "{ %'.2f %'.2f %'.2f }" : "{ %.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_timeval(size_t l2, void *p) { struct timeval *tv = (struct timeval*)p; time_t tv_sec; char *p1, *p2; if (l2 != sizeof(*tv)) { warnx("S_timeval %zu != %zu", l2, sizeof(*tv)); return (1); } printf(hflag ? "{ sec = %'jd, usec = %'ld } " : "{ sec = %jd, usec = %ld } ", (intmax_t)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); free(p1); return (0); } static int S_vmtotal(size_t l2, void *p) { struct vmtotal *v; int pageKilo; if (l2 != sizeof(*v)) { warnx("S_vmtotal %zu != %zu", l2, sizeof(*v)); return (1); } v = p; pageKilo = getpagesize() / 1024; #define pg2k(a) ((uintmax_t)(a) * pageKilo) printf("\nSystem wide totals computed every five seconds:" " (values in kilobytes)\n"); printf("===============================================\n"); printf("Processes:\t\t(RUNQ: %d Disk Wait: %d Page Wait: " "%d Sleep: %d)\n", v->t_rq, v->t_dw, v->t_pw, v->t_sl); printf("Virtual Memory:\t\t(Total: %juK Active: %juK)\n", pg2k(v->t_vm), pg2k(v->t_avm)); printf("Real Memory:\t\t(Total: %juK Active: %juK)\n", pg2k(v->t_rm), pg2k(v->t_arm)); printf("Shared Virtual Memory:\t(Total: %juK Active: %juK)\n", pg2k(v->t_vmshr), pg2k(v->t_avmshr)); printf("Shared Real Memory:\t(Total: %juK Active: %juK)\n", pg2k(v->t_rmshr), pg2k(v->t_armshr)); printf("Free Memory:\t%juK", pg2k(v->t_free)); return (0); } static int S_input_id(size_t l2, void *p) { struct input_id *id = p; if (l2 != sizeof(*id)) { warnx("S_input_id %zu != %zu", l2, sizeof(*id)); return (1); } printf("{ bustype = 0x%04x, vendor = 0x%04x, " "product = 0x%04x, version = 0x%04x }", id->bustype, id->vendor, id->product, id->version); return (0); } +static int +S_pagesizes(size_t l2, void *p) +{ + char buf[256]; + u_long *ps; + size_t l; + int i; + + l = snprintf(buf, sizeof(buf), "{ "); + ps = p; + for (i = 0; i * sizeof(*ps) < l2 && ps[i] != 0 && l < sizeof(buf); + i++) { + l += snprintf(&buf[l], sizeof(buf) - l, + "%s%lu", i == 0 ? "" : ", ", ps[i]); + } + if (l < sizeof(buf)) + (void)snprintf(&buf[l], sizeof(buf) - l, " }"); + + printf("%s", buf); + + return (0); +} + #ifdef __amd64__ 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 * const types[] = { [EFI_MD_TYPE_NULL] = "Reserved", [EFI_MD_TYPE_CODE] = "LoaderCode", [EFI_MD_TYPE_DATA] = "LoaderData", [EFI_MD_TYPE_BS_CODE] = "BootServicesCode", [EFI_MD_TYPE_BS_DATA] = "BootServicesData", [EFI_MD_TYPE_RT_CODE] = "RuntimeServicesCode", [EFI_MD_TYPE_RT_DATA] = "RuntimeServicesData", [EFI_MD_TYPE_FREE] = "ConventionalMemory", [EFI_MD_TYPE_BAD] = "UnusableMemory", [EFI_MD_TYPE_RECLAIM] = "ACPIReclaimMemory", [EFI_MD_TYPE_FIRMWARE] = "ACPIMemoryNVS", [EFI_MD_TYPE_IOMEM] = "MemoryMappedIO", [EFI_MD_TYPE_IOPORT] = "MemoryMappedIOPortSpace", [EFI_MD_TYPE_PALCODE] = "PalCode", [EFI_MD_TYPE_PERSISTENT] = "PersistentMemory", }; /* * 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)) { type = NULL; if (map->md_type < nitems(types)) type = types[map->md_type]; if (type == NULL) type = ""; printf("\n%23s %012jx %12p %08jx ", type, (uintmax_t)map->md_phys, map->md_virt, (uintmax_t)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 #if defined(__amd64__) || defined(__i386__) static int S_bios_smap_xattr(size_t l2, void *p) { struct bios_smap_xattr *smap, *end; if (l2 % sizeof(*smap) != 0) { warnx("S_bios_smap_xattr %zu is not a multiple of %zu", l2, sizeof(*smap)); return (1); } end = (struct bios_smap_xattr *)((char *)p + l2); for (smap = p; smap < end; smap++) printf("\nSMAP type=%02x, xattr=%02x, base=%016jx, len=%016jx", smap->type, smap->xattr, (uintmax_t)smap->base, (uintmax_t)smap->length); return (0); } #endif static int strIKtoi(const char *str, char **endptrp, const char *fmt) { int kelv; float temp; size_t len; const char *p; int prec, i; assert(errno == 0); len = strlen(str); /* caller already checked this */ assert(len > 0); /* * A format of "IK" is in deciKelvin. A format of "IK3" is in * milliKelvin. The single digit following IK is log10 of the * multiplying factor to convert Kelvin into the untis of this sysctl, * or the dividing factor to convert the sysctl value to Kelvin. Numbers * larger than 6 will run into precision issues with 32-bit integers. * Characters that aren't ASCII digits after the 'K' are ignored. No * localization is present because this is an interface from the kernel * to this program (eg not an end-user interface), so isdigit() isn't * used here. */ if (fmt[2] != '\0' && fmt[2] >= '0' && fmt[2] <= '9') prec = fmt[2] - '0'; else prec = 1; p = &str[len - 1]; if (*p == 'C' || *p == 'F' || *p == 'K') { temp = strtof(str, endptrp); if (*endptrp != str && *endptrp == p && errno == 0) { if (*p == 'F') temp = (temp - 32) * 5 / 9; *endptrp = NULL; if (*p != 'K') temp += 273.15; for (i = 0; i < prec; i++) temp *= 10.0; return ((int)(temp + 0.5)); } } else { /* No unit specified -> treat it as a raw number */ kelv = (int)strtol(str, endptrp, 10); if (*endptrp != str && *endptrp == p && errno == 0) { *endptrp = NULL; return (kelv); } } errno = ERANGE; return (0); } /* * 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 name2oid(const char *name, int *oidp) { int oid[2]; int i; size_t j; oid[0] = 0; oid[1] = 3; j = CTL_MAXNAME * sizeof(int); i = sysctl(oid, 2, oidp, &j, name, strlen(name)); if (i < 0) return (i); j /= sizeof(int); return (j); } static int oidfmt(int *oid, int 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, int nlen) { u_char buf[BUFSIZ], *val, *oval, *p; char name[BUFSIZ], fmt[BUFSIZ]; const char *sep, *sep1, *prntype; int qoid[CTL_MAXNAME+2]; uintmax_t umv; intmax_t mv; int i, hexlen, sign, ctltype; size_t intlen; size_t j, len; u_int kind; float base; int (*func)(size_t, void *); int prec; /* Silence GCC. */ umv = mv = intlen = 0; bzero(buf, BUFSIZ); bzero(fmt, BUFSIZ); bzero(name, BUFSIZ); 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); oidfmt(oid, nlen, fmt, &kind); /* if Wflag then only list sysctls that are writeable and not stats. */ if (Wflag && ((kind & CTLFLAG_WR) == 0 || (kind & CTLFLAG_STATS) != 0)) return 1; /* if Tflag then only list sysctls that are tuneables. */ if (Tflag && (kind & CTLFLAG_TUN) == 0) return 1; if (Nflag) { printf("%s", name); return (0); } if (eflag) sep = "="; else sep = ": "; ctltype = (kind & CTLTYPE); if (tflag || dflag) { if (!nflag) printf("%s%s", name, sep); if (ctl_typename[ctltype] != NULL) prntype = ctl_typename[ctltype]; else prntype = "unknown"; if (tflag && dflag) printf("%s%s", prntype, sep); else if (tflag) { printf("%s", prntype); return (0); } qoid[1] = 5; j = sizeof(buf); i = sysctl(qoid, nlen + 2, buf, &j, 0, 0); printf("%s", buf); return (0); } /* don't fetch opaques that we don't know how to print */ if (ctltype == CTLTYPE_OPAQUE) { if (strcmp(fmt, "S,clockinfo") == 0) func = S_clockinfo; 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,vmtotal") == 0) func = S_vmtotal; else if (strcmp(fmt, "S,input_id") == 0) func = S_input_id; + else if (strcmp(fmt, "S,pagesizes") == 0) + func = S_pagesizes; #ifdef __amd64__ else if (strcmp(fmt, "S,efi_map_header") == 0) func = S_efi_map; #endif #if defined(__amd64__) || defined(__i386__) else if (strcmp(fmt, "S,bios_smap_xattr") == 0) func = S_bios_smap_xattr; #endif else { func = NULL; if (!bflag && !oflag && !xflag) return (1); } } /* find an estimate of how much we need for this var */ if (Bflag) j = Bflag; else { j = 0; i = sysctl(oid, nlen, 0, &j, 0, 0); j += j; /* we want to be sure :-) */ } val = oval = malloc(j + 1); if (val == NULL) { warnx("malloc failed"); return (1); } len = j; i = sysctl(oid, nlen, val, &len, 0, 0); if (i != 0 || (len == 0 && ctltype != CTLTYPE_STRING)) { free(oval); return (1); } if (bflag) { fwrite(val, 1, len, stdout); free(oval); return (0); } val[len] = '\0'; p = val; sign = ctl_sign[ctltype]; intlen = ctl_size[ctltype]; switch (ctltype) { case CTLTYPE_STRING: if (!nflag) printf("%s%s", name, sep); printf("%.*s", (int)len, p); free(oval); return (0); case CTLTYPE_INT: case CTLTYPE_UINT: case CTLTYPE_LONG: case CTLTYPE_ULONG: case CTLTYPE_S8: case CTLTYPE_S16: case CTLTYPE_S32: case CTLTYPE_S64: case CTLTYPE_U8: case CTLTYPE_U16: case CTLTYPE_U32: case CTLTYPE_U64: if (!nflag) printf("%s%s", name, sep); hexlen = 2 + (intlen * CHAR_BIT + 3) / 4; sep1 = ""; while (len >= intlen) { switch (kind & CTLTYPE) { case CTLTYPE_INT: case CTLTYPE_UINT: umv = *(u_int *)p; mv = *(int *)p; break; case CTLTYPE_LONG: case CTLTYPE_ULONG: umv = *(u_long *)p; mv = *(long *)p; break; case CTLTYPE_S8: case CTLTYPE_U8: umv = *(uint8_t *)p; mv = *(int8_t *)p; break; case CTLTYPE_S16: case CTLTYPE_U16: umv = *(uint16_t *)p; mv = *(int16_t *)p; break; case CTLTYPE_S32: case CTLTYPE_U32: umv = *(uint32_t *)p; mv = *(int32_t *)p; break; case CTLTYPE_S64: case CTLTYPE_U64: umv = *(uint64_t *)p; mv = *(int64_t *)p; break; } fputs(sep1, stdout); if (xflag) printf("%#0*jx", hexlen, umv); else if (!sign) printf(hflag ? "%'ju" : "%ju", umv); else if (fmt[1] == 'K') { if (mv < 0) printf("%jd", mv); else { /* * See strIKtoi for details on fmt. */ prec = 1; if (fmt[2] != '\0') prec = fmt[2] - '0'; base = 1.0; for (int i = 0; i < prec; i++) base *= 10.0; printf("%.*fC", prec, (float)mv / base - 273.15); } } else printf(hflag ? "%'jd" : "%jd", mv); sep1 = " "; len -= intlen; p += intlen; } free(oval); return (0); case CTLTYPE_OPAQUE: i = 0; if (func) { if (!nflag) printf("%s%s", name, sep); i = (*func)(len, p); free(oval); return (i); } /* FALLTHROUGH */ default: if (!oflag && !xflag) { free(oval); return (1); } 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("..."); free(oval); return (0); } free(oval); return (1); } static int sysctl_all(int *oid, int len) { int name1[22], name2[22]; int i, j; size_t 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); j = sysctl(name1, l1, name2, &l2, 0, 0); if (j < 0) { if (errno == ENOENT) return (0); else err(1, "sysctl(getnext) %d %zu", j, l2); } l2 /= sizeof(int); if (len < 0 || l2 < (unsigned int)len) return (0); for (i = 0; i < len; i++) if (name2[i] != oid[i]) return (0); i = show_var(name2, l2); if (!i && !bflag) putchar('\n'); memcpy(name1+2, name2, l2 * sizeof(int)); l1 = 2 + l2; } } Index: head/sys/kern/kern_mib.c =================================================================== --- head/sys/kern/kern_mib.c (revision 365267) +++ head/sys/kern/kern_mib.c (revision 365268) @@ -1,712 +1,712 @@ /*- * SPDX-License-Identifier: BSD-3-Clause * * Copyright (c) 1982, 1986, 1989, 1993 * The Regents of the University of California. All rights reserved. * * This code is derived from software contributed to Berkeley by * Mike Karels at Berkeley Software Design, Inc. * * Quite extensively rewritten by Poul-Henning Kamp of the FreeBSD * project, to make these variables more userfriendly. * * 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. * * @(#)kern_sysctl.c 8.4 (Berkeley) 4/14/94 */ #include __FBSDID("$FreeBSD$"); #include "opt_posix.h" #include "opt_config.h" #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include SYSCTL_ROOT_NODE(0, sysctl, CTLFLAG_RW | CTLFLAG_MPSAFE, 0, "Sysctl internal magic"); SYSCTL_ROOT_NODE(CTL_KERN, kern, CTLFLAG_RW | CTLFLAG_CAPRD | CTLFLAG_MPSAFE, 0, "High kernel, proc, limits &c"); SYSCTL_ROOT_NODE(CTL_VM, vm, CTLFLAG_RW | CTLFLAG_MPSAFE, 0, "Virtual memory"); SYSCTL_ROOT_NODE(CTL_VFS, vfs, CTLFLAG_RW | CTLFLAG_MPSAFE, 0, "File system"); SYSCTL_ROOT_NODE(CTL_NET, net, CTLFLAG_RW | CTLFLAG_MPSAFE, 0, "Network, (see socket.h)"); SYSCTL_ROOT_NODE(CTL_DEBUG, debug, CTLFLAG_RW | CTLFLAG_MPSAFE, 0, "Debugging"); SYSCTL_NODE(_debug, OID_AUTO, sizeof, CTLFLAG_RW | CTLFLAG_MPSAFE, 0, "Sizeof various things"); SYSCTL_ROOT_NODE(CTL_HW, hw, CTLFLAG_RW | CTLFLAG_MPSAFE, 0, "hardware"); SYSCTL_ROOT_NODE(CTL_MACHDEP, machdep, CTLFLAG_RW | CTLFLAG_MPSAFE, 0, "machine dependent"); SYSCTL_NODE(_machdep, OID_AUTO, mitigations, CTLFLAG_RW | CTLFLAG_MPSAFE, 0, "Machine dependent platform mitigations."); SYSCTL_ROOT_NODE(CTL_USER, user, CTLFLAG_RW | CTLFLAG_MPSAFE, 0, "user-level"); SYSCTL_ROOT_NODE(CTL_P1003_1B, p1003_1b, CTLFLAG_RW | CTLFLAG_MPSAFE, 0, "p1003_1b, (see p1003_1b.h)"); SYSCTL_ROOT_NODE(OID_AUTO, compat, CTLFLAG_RW | CTLFLAG_MPSAFE, 0, "Compatibility code"); SYSCTL_ROOT_NODE(OID_AUTO, security, CTLFLAG_RW | CTLFLAG_MPSAFE, 0, "Security"); #ifdef REGRESSION SYSCTL_ROOT_NODE(OID_AUTO, regression, CTLFLAG_RW | CTLFLAG_MPSAFE, 0, "Regression test MIB"); #endif SYSCTL_STRING(_kern, OID_AUTO, ident, CTLFLAG_RD|CTLFLAG_MPSAFE, kern_ident, 0, "Kernel identifier"); SYSCTL_INT(_kern, KERN_OSREV, osrevision, CTLFLAG_RD|CTLFLAG_CAPRD, SYSCTL_NULL_INT_PTR, BSD, "Operating system revision"); SYSCTL_STRING(_kern, KERN_VERSION, version, CTLFLAG_RD|CTLFLAG_MPSAFE, version, 0, "Kernel version"); SYSCTL_STRING(_kern, OID_AUTO, compiler_version, CTLFLAG_RD|CTLFLAG_MPSAFE, compiler_version, 0, "Version of compiler used to compile kernel"); SYSCTL_STRING(_kern, KERN_OSTYPE, ostype, CTLFLAG_RD|CTLFLAG_MPSAFE| CTLFLAG_CAPRD, ostype, 0, "Operating system type"); SYSCTL_INT(_kern, KERN_MAXPROC, maxproc, CTLFLAG_RDTUN | CTLFLAG_NOFETCH, &maxproc, 0, "Maximum number of processes"); SYSCTL_INT(_kern, KERN_MAXPROCPERUID, maxprocperuid, CTLFLAG_RW, &maxprocperuid, 0, "Maximum processes allowed per userid"); SYSCTL_INT(_kern, OID_AUTO, maxusers, CTLFLAG_RDTUN | CTLFLAG_NOFETCH, &maxusers, 0, "Hint for kernel tuning"); SYSCTL_INT(_kern, KERN_ARGMAX, argmax, CTLFLAG_RD|CTLFLAG_CAPRD, SYSCTL_NULL_INT_PTR, ARG_MAX, "Maximum bytes of argument to execve(2)"); SYSCTL_INT(_kern, KERN_POSIX1, posix1version, CTLFLAG_RD|CTLFLAG_CAPRD, SYSCTL_NULL_INT_PTR, _POSIX_VERSION, "Version of POSIX attempting to comply to"); SYSCTL_INT(_kern, KERN_NGROUPS, ngroups, CTLFLAG_RDTUN | CTLFLAG_NOFETCH | CTLFLAG_CAPRD, &ngroups_max, 0, "Maximum number of supplemental groups a user can belong to"); SYSCTL_INT(_kern, KERN_JOB_CONTROL, job_control, CTLFLAG_RD|CTLFLAG_CAPRD, SYSCTL_NULL_INT_PTR, 1, "Whether job control is available"); #ifdef _POSIX_SAVED_IDS SYSCTL_INT(_kern, KERN_SAVED_IDS, saved_ids, CTLFLAG_RD|CTLFLAG_CAPRD, SYSCTL_NULL_INT_PTR, 1, "Whether saved set-group/user ID is available"); #else SYSCTL_INT(_kern, KERN_SAVED_IDS, saved_ids, CTLFLAG_RD|CTLFLAG_CAPRD, SYSCTL_NULL_INT_PTR, 0, "Whether saved set-group/user ID is available"); #endif char kernelname[MAXPATHLEN] = PATH_KERNEL; /* XXX bloat */ SYSCTL_STRING(_kern, KERN_BOOTFILE, bootfile, CTLFLAG_RW | CTLFLAG_MPSAFE, kernelname, sizeof kernelname, "Name of kernel file booted"); SYSCTL_INT(_kern, KERN_MAXPHYS, maxphys, CTLFLAG_RD | CTLFLAG_CAPRD, SYSCTL_NULL_INT_PTR, MAXPHYS, "Maximum block I/O access size"); SYSCTL_INT(_hw, HW_NCPU, ncpu, CTLFLAG_RD|CTLFLAG_CAPRD, &mp_ncpus, 0, "Number of active CPUs"); SYSCTL_INT(_hw, HW_BYTEORDER, byteorder, CTLFLAG_RD|CTLFLAG_CAPRD, SYSCTL_NULL_INT_PTR, BYTE_ORDER, "System byte order"); SYSCTL_INT(_hw, HW_PAGESIZE, pagesize, CTLFLAG_RD|CTLFLAG_CAPRD, SYSCTL_NULL_INT_PTR, PAGE_SIZE, "System memory page size"); static int sysctl_kern_arnd(SYSCTL_HANDLER_ARGS) { char buf[256]; size_t len; len = MIN(req->oldlen, sizeof(buf)); read_random(buf, len); return (SYSCTL_OUT(req, buf, len)); } SYSCTL_PROC(_kern, KERN_ARND, arandom, CTLTYPE_OPAQUE | CTLFLAG_RD | CTLFLAG_MPSAFE | CTLFLAG_CAPRD, NULL, 0, sysctl_kern_arnd, "", "arc4rand"); static int sysctl_hw_physmem(SYSCTL_HANDLER_ARGS) { u_long val, p; p = SIZE_T_MAX >> PAGE_SHIFT; if (physmem < p) p = physmem; val = ctob(p); return (sysctl_handle_long(oidp, &val, 0, req)); } SYSCTL_PROC(_hw, HW_PHYSMEM, physmem, CTLTYPE_ULONG | CTLFLAG_RD | CTLFLAG_MPSAFE, 0, 0, sysctl_hw_physmem, "LU", "Amount of physical memory (in bytes)"); static int sysctl_hw_realmem(SYSCTL_HANDLER_ARGS) { u_long val, p; p = SIZE_T_MAX >> PAGE_SHIFT; if (realmem < p) p = realmem; val = ctob(p); return (sysctl_handle_long(oidp, &val, 0, req)); } SYSCTL_PROC(_hw, HW_REALMEM, realmem, CTLTYPE_ULONG | CTLFLAG_RD | CTLFLAG_MPSAFE, 0, 0, sysctl_hw_realmem, "LU", "Amount of memory (in bytes) reported by the firmware"); static int sysctl_hw_usermem(SYSCTL_HANDLER_ARGS) { u_long val, p, p1; p1 = physmem - vm_wire_count(); p = SIZE_T_MAX >> PAGE_SHIFT; if (p1 < p) p = p1; val = ctob(p); return (sysctl_handle_long(oidp, &val, 0, req)); } SYSCTL_PROC(_hw, HW_USERMEM, usermem, CTLTYPE_ULONG | CTLFLAG_RD | CTLFLAG_MPSAFE, 0, 0, sysctl_hw_usermem, "LU", "Amount of memory (in bytes) which is not wired"); SYSCTL_LONG(_hw, OID_AUTO, availpages, CTLFLAG_RD, &physmem, 0, "Amount of physical memory (in pages)"); u_long pagesizes[MAXPAGESIZES] = { PAGE_SIZE }; static int sysctl_hw_pagesizes(SYSCTL_HANDLER_ARGS) { int error; size_t len; #ifdef SCTL_MASK32 int i; uint32_t pagesizes32[MAXPAGESIZES]; if (req->flags & SCTL_MASK32) { /* * Recreate the "pagesizes" array with 32-bit elements. * Truncate any page size greater than UINT32_MAX to zero, * which assumes that page sizes are powers of two. */ for (i = 0; i < MAXPAGESIZES; i++) pagesizes32[i] = (uint32_t)pagesizes[i]; len = sizeof(pagesizes32); - if (len > req->oldlen) + if (len > req->oldlen && req->oldptr != NULL) len = req->oldlen; error = SYSCTL_OUT(req, pagesizes32, len); } else #endif { len = sizeof(pagesizes); - if (len > req->oldlen) + if (len > req->oldlen && req->oldptr != NULL) len = req->oldlen; error = SYSCTL_OUT(req, pagesizes, len); } return (error); } SYSCTL_PROC(_hw, OID_AUTO, pagesizes, - CTLTYPE_ULONG | CTLFLAG_RD | CTLFLAG_MPSAFE, NULL, 0, - sysctl_hw_pagesizes, "LU", + CTLTYPE_OPAQUE | CTLFLAG_RD | CTLFLAG_MPSAFE, NULL, 0, + sysctl_hw_pagesizes, "S,pagesizes", "Supported page sizes"); int adaptive_machine_arch = 1; SYSCTL_INT(_debug, OID_AUTO, adaptive_machine_arch, CTLFLAG_RW, &adaptive_machine_arch, 1, "Adapt reported machine architecture to the ABI of the binary"); static const char * proc_machine_arch(struct proc *p) { if (p->p_sysent->sv_machine_arch != NULL) return (p->p_sysent->sv_machine_arch(p)); #ifdef COMPAT_FREEBSD32 if (SV_PROC_FLAG(p, SV_ILP32)) return (MACHINE_ARCH32); #endif return (MACHINE_ARCH); } static int sysctl_hw_machine_arch(SYSCTL_HANDLER_ARGS) { const char *machine_arch; if (adaptive_machine_arch) machine_arch = proc_machine_arch(curproc); else machine_arch = MACHINE_ARCH; return (SYSCTL_OUT(req, machine_arch, strlen(machine_arch) + 1)); } SYSCTL_PROC(_hw, HW_MACHINE_ARCH, machine_arch, CTLTYPE_STRING | CTLFLAG_RD | CTLFLAG_MPSAFE, NULL, 0, sysctl_hw_machine_arch, "A", "System architecture"); #ifndef MACHINE_ARCHES #ifdef COMPAT_FREEBSD32 #define MACHINE_ARCHES MACHINE_ARCH " " MACHINE_ARCH32 #else #define MACHINE_ARCHES MACHINE_ARCH #endif #endif SYSCTL_STRING(_kern, OID_AUTO, supported_archs, CTLFLAG_RD | CTLFLAG_MPSAFE, MACHINE_ARCHES, 0, "Supported architectures for binaries"); static int sysctl_hostname(SYSCTL_HANDLER_ARGS) { struct prison *pr, *cpr; size_t pr_offset; char tmpname[MAXHOSTNAMELEN]; int descend, error, len; /* * This function can set: hostname domainname hostuuid. * Keep that in mind when comments say "hostname". */ pr_offset = (size_t)arg1; len = arg2; KASSERT(len <= sizeof(tmpname), ("length %d too long for %s", len, __func__)); pr = req->td->td_ucred->cr_prison; if (!(pr->pr_allow & PR_ALLOW_SET_HOSTNAME) && req->newptr) return (EPERM); /* * Make a local copy of hostname to get/set so we don't have to hold * the jail mutex during the sysctl copyin/copyout activities. */ mtx_lock(&pr->pr_mtx); bcopy((char *)pr + pr_offset, tmpname, len); mtx_unlock(&pr->pr_mtx); error = sysctl_handle_string(oidp, tmpname, len, req); if (req->newptr != NULL && error == 0) { /* * Copy the locally set hostname to all jails that share * this host info. */ sx_slock(&allprison_lock); while (!(pr->pr_flags & PR_HOST)) pr = pr->pr_parent; mtx_lock(&pr->pr_mtx); bcopy(tmpname, (char *)pr + pr_offset, len); FOREACH_PRISON_DESCENDANT_LOCKED(pr, cpr, descend) if (cpr->pr_flags & PR_HOST) descend = 0; else bcopy(tmpname, (char *)cpr + pr_offset, len); mtx_unlock(&pr->pr_mtx); sx_sunlock(&allprison_lock); } return (error); } SYSCTL_PROC(_kern, KERN_HOSTNAME, hostname, CTLTYPE_STRING | CTLFLAG_RW | CTLFLAG_PRISON | CTLFLAG_CAPRD | CTLFLAG_MPSAFE, (void *)(offsetof(struct prison, pr_hostname)), MAXHOSTNAMELEN, sysctl_hostname, "A", "Hostname"); SYSCTL_PROC(_kern, KERN_NISDOMAINNAME, domainname, CTLTYPE_STRING | CTLFLAG_RW | CTLFLAG_PRISON | CTLFLAG_CAPRD | CTLFLAG_MPSAFE, (void *)(offsetof(struct prison, pr_domainname)), MAXHOSTNAMELEN, sysctl_hostname, "A", "Name of the current YP/NIS domain"); SYSCTL_PROC(_kern, KERN_HOSTUUID, hostuuid, CTLTYPE_STRING | CTLFLAG_RW | CTLFLAG_PRISON | CTLFLAG_CAPRD | CTLFLAG_MPSAFE, (void *)(offsetof(struct prison, pr_hostuuid)), HOSTUUIDLEN, sysctl_hostname, "A", "Host UUID"); static int regression_securelevel_nonmonotonic = 0; #ifdef REGRESSION SYSCTL_INT(_regression, OID_AUTO, securelevel_nonmonotonic, CTLFLAG_RW, ®ression_securelevel_nonmonotonic, 0, "securelevel may be lowered"); #endif static int sysctl_kern_securelvl(SYSCTL_HANDLER_ARGS) { struct prison *pr, *cpr; int descend, error, level; pr = req->td->td_ucred->cr_prison; /* * Reading the securelevel is easy, since the current jail's level * is known to be at least as secure as any higher levels. Perform * a lockless read since the securelevel is an integer. */ level = pr->pr_securelevel; error = sysctl_handle_int(oidp, &level, 0, req); if (error || !req->newptr) return (error); /* Permit update only if the new securelevel exceeds the old. */ sx_slock(&allprison_lock); mtx_lock(&pr->pr_mtx); if (!regression_securelevel_nonmonotonic && level < pr->pr_securelevel) { mtx_unlock(&pr->pr_mtx); sx_sunlock(&allprison_lock); return (EPERM); } pr->pr_securelevel = level; /* * Set all child jails to be at least this level, but do not lower * them (even if regression_securelevel_nonmonotonic). */ FOREACH_PRISON_DESCENDANT_LOCKED(pr, cpr, descend) { if (cpr->pr_securelevel < level) cpr->pr_securelevel = level; } mtx_unlock(&pr->pr_mtx); sx_sunlock(&allprison_lock); return (error); } SYSCTL_PROC(_kern, KERN_SECURELVL, securelevel, CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_PRISON | CTLFLAG_MPSAFE, 0, 0, sysctl_kern_securelvl, "I", "Current secure level"); #ifdef INCLUDE_CONFIG_FILE /* Actual kernel configuration options. */ extern char kernconfstring[]; SYSCTL_STRING(_kern, OID_AUTO, conftxt, CTLFLAG_RD | CTLFLAG_MPSAFE, kernconfstring, 0, "Kernel configuration file"); #endif static int sysctl_hostid(SYSCTL_HANDLER_ARGS) { struct prison *pr, *cpr; u_long tmpid; int descend, error; /* * Like sysctl_hostname, except it operates on a u_long * instead of a string, and is used only for hostid. */ pr = req->td->td_ucred->cr_prison; if (!(pr->pr_allow & PR_ALLOW_SET_HOSTNAME) && req->newptr) return (EPERM); tmpid = pr->pr_hostid; error = sysctl_handle_long(oidp, &tmpid, 0, req); if (req->newptr != NULL && error == 0) { sx_slock(&allprison_lock); while (!(pr->pr_flags & PR_HOST)) pr = pr->pr_parent; mtx_lock(&pr->pr_mtx); pr->pr_hostid = tmpid; FOREACH_PRISON_DESCENDANT_LOCKED(pr, cpr, descend) if (cpr->pr_flags & PR_HOST) descend = 0; else cpr->pr_hostid = tmpid; mtx_unlock(&pr->pr_mtx); sx_sunlock(&allprison_lock); } return (error); } SYSCTL_PROC(_kern, KERN_HOSTID, hostid, CTLTYPE_ULONG | CTLFLAG_RW | CTLFLAG_PRISON | CTLFLAG_MPSAFE | CTLFLAG_CAPRD, NULL, 0, sysctl_hostid, "LU", "Host ID"); static struct mtx bootid_lk; MTX_SYSINIT(bootid_lock, &bootid_lk, "bootid generator lock", MTX_DEF); static int sysctl_bootid(SYSCTL_HANDLER_ARGS) { static uint8_t boot_id[16]; static bool initialized = false; mtx_lock(&bootid_lk); if (!initialized) { if (!is_random_seeded()) { mtx_unlock(&bootid_lk); return (ENXIO); } arc4random_buf(boot_id, sizeof(boot_id)); initialized = true; } mtx_unlock(&bootid_lk); return (SYSCTL_OUT(req, boot_id, sizeof(boot_id))); } SYSCTL_PROC(_kern, OID_AUTO, boot_id, CTLTYPE_STRUCT | CTLFLAG_RD | CTLFLAG_MPSAFE | CTLFLAG_CAPRD, NULL, 0, sysctl_bootid, "", "Random boot ID"); /* * The osrelease string is copied from the global (osrelease in vers.c) into * prison0 by a sysinit and is inherited by child jails if not changed at jail * creation, so we always return the copy from the current prison data. */ static int sysctl_osrelease(SYSCTL_HANDLER_ARGS) { struct prison *pr; pr = req->td->td_ucred->cr_prison; return (SYSCTL_OUT(req, pr->pr_osrelease, strlen(pr->pr_osrelease) + 1)); } SYSCTL_PROC(_kern, KERN_OSRELEASE, osrelease, CTLTYPE_STRING | CTLFLAG_CAPRD | CTLFLAG_RD | CTLFLAG_MPSAFE, NULL, 0, sysctl_osrelease, "A", "Operating system release"); /* * The osreldate number is copied from the global (osreldate in vers.c) into * prison0 by a sysinit and is inherited by child jails if not changed at jail * creation, so we always return the value from the current prison data. */ static int sysctl_osreldate(SYSCTL_HANDLER_ARGS) { struct prison *pr; pr = req->td->td_ucred->cr_prison; return (SYSCTL_OUT(req, &pr->pr_osreldate, sizeof(pr->pr_osreldate))); } /* * NOTICE: The *userland* release date is available in * /usr/include/osreldate.h */ SYSCTL_PROC(_kern, KERN_OSRELDATE, osreldate, CTLTYPE_INT | CTLFLAG_CAPRD | CTLFLAG_RD | CTLFLAG_MPSAFE, NULL, 0, sysctl_osreldate, "I", "Kernel release date"); /* * The build-id is copied from the ELF section .note.gnu.build-id. The linker * script defines two variables to expose the beginning and end. LLVM * currently uses a SHA-1 hash, but other formats can be supported by checking * the length of the section. */ extern char __build_id_start[]; extern char __build_id_end[]; #define BUILD_ID_HEADER_LEN 0x10 #define BUILD_ID_HASH_MAXLEN 0x14 static int sysctl_build_id(SYSCTL_HANDLER_ARGS) { uintptr_t sectionlen = (uintptr_t)(__build_id_end - __build_id_start); int hashlen; char buf[2*BUILD_ID_HASH_MAXLEN+1]; /* * The ELF note section has a four byte length for the vendor name, * four byte length for the value, and a four byte vendor specific * type. The name for the build id is "GNU\0". We skip the first 16 * bytes to read the build hash. We will return the remaining bytes up * to 20 (SHA-1) hash size. If the hash happens to be a custom number * of bytes we will pad the value with zeros, as the section should be * four byte aligned. */ if (sectionlen <= BUILD_ID_HEADER_LEN || sectionlen > (BUILD_ID_HEADER_LEN + BUILD_ID_HASH_MAXLEN)) { return (ENOENT); } hashlen = sectionlen - BUILD_ID_HEADER_LEN; for (int i = 0; i < hashlen; i++) { uint8_t c = __build_id_start[i+BUILD_ID_HEADER_LEN]; snprintf(&buf[2*i], 3, "%02x", c); } return (SYSCTL_OUT(req, buf, strlen(buf) + 1)); } SYSCTL_PROC(_kern, OID_AUTO, build_id, CTLTYPE_STRING | CTLFLAG_CAPRD | CTLFLAG_RD | CTLFLAG_MPSAFE, NULL, 0, sysctl_build_id, "A", "Operating system build-id"); SYSCTL_NODE(_kern, OID_AUTO, features, CTLFLAG_RD | CTLFLAG_MPSAFE, 0, "Kernel Features"); #ifdef COMPAT_FREEBSD4 FEATURE(compat_freebsd4, "Compatible with FreeBSD 4"); #endif #ifdef COMPAT_FREEBSD5 FEATURE(compat_freebsd5, "Compatible with FreeBSD 5"); #endif #ifdef COMPAT_FREEBSD6 FEATURE(compat_freebsd6, "Compatible with FreeBSD 6"); #endif #ifdef COMPAT_FREEBSD7 FEATURE(compat_freebsd7, "Compatible with FreeBSD 7"); #endif /* * This is really cheating. These actually live in the libc, something * which I'm not quite sure is a good idea anyway, but in order for * getnext and friends to actually work, we define dummies here. * * XXXRW: These probably should be CTLFLAG_CAPRD. */ SYSCTL_STRING(_user, USER_CS_PATH, cs_path, CTLFLAG_RD, "", 0, "PATH that finds all the standard utilities"); SYSCTL_INT(_user, USER_BC_BASE_MAX, bc_base_max, CTLFLAG_RD, SYSCTL_NULL_INT_PTR, 0, "Max ibase/obase values in bc(1)"); SYSCTL_INT(_user, USER_BC_DIM_MAX, bc_dim_max, CTLFLAG_RD, SYSCTL_NULL_INT_PTR, 0, "Max array size in bc(1)"); SYSCTL_INT(_user, USER_BC_SCALE_MAX, bc_scale_max, CTLFLAG_RD, SYSCTL_NULL_INT_PTR, 0, "Max scale value in bc(1)"); SYSCTL_INT(_user, USER_BC_STRING_MAX, bc_string_max, CTLFLAG_RD, SYSCTL_NULL_INT_PTR, 0, "Max string length in bc(1)"); SYSCTL_INT(_user, USER_COLL_WEIGHTS_MAX, coll_weights_max, CTLFLAG_RD, SYSCTL_NULL_INT_PTR, 0, "Maximum number of weights assigned to an LC_COLLATE locale entry"); SYSCTL_INT(_user, USER_EXPR_NEST_MAX, expr_nest_max, CTLFLAG_RD, SYSCTL_NULL_INT_PTR, 0, ""); SYSCTL_INT(_user, USER_LINE_MAX, line_max, CTLFLAG_RD, SYSCTL_NULL_INT_PTR, 0, "Max length (bytes) of a text-processing utility's input line"); SYSCTL_INT(_user, USER_RE_DUP_MAX, re_dup_max, CTLFLAG_RD, SYSCTL_NULL_INT_PTR, 0, "Maximum number of repeats of a regexp permitted"); SYSCTL_INT(_user, USER_POSIX2_VERSION, posix2_version, CTLFLAG_RD, SYSCTL_NULL_INT_PTR, 0, "The version of POSIX 1003.2 with which the system attempts to comply"); SYSCTL_INT(_user, USER_POSIX2_C_BIND, posix2_c_bind, CTLFLAG_RD, SYSCTL_NULL_INT_PTR, 0, "Whether C development supports the C bindings option"); SYSCTL_INT(_user, USER_POSIX2_C_DEV, posix2_c_dev, CTLFLAG_RD, SYSCTL_NULL_INT_PTR, 0, "Whether system supports the C development utilities option"); SYSCTL_INT(_user, USER_POSIX2_CHAR_TERM, posix2_char_term, CTLFLAG_RD, SYSCTL_NULL_INT_PTR, 0, ""); SYSCTL_INT(_user, USER_POSIX2_FORT_DEV, posix2_fort_dev, CTLFLAG_RD, SYSCTL_NULL_INT_PTR, 0, "Whether system supports FORTRAN development utilities"); SYSCTL_INT(_user, USER_POSIX2_FORT_RUN, posix2_fort_run, CTLFLAG_RD, SYSCTL_NULL_INT_PTR, 0, "Whether system supports FORTRAN runtime utilities"); SYSCTL_INT(_user, USER_POSIX2_LOCALEDEF, posix2_localedef, CTLFLAG_RD, SYSCTL_NULL_INT_PTR, 0, "Whether system supports creation of locales"); SYSCTL_INT(_user, USER_POSIX2_SW_DEV, posix2_sw_dev, CTLFLAG_RD, SYSCTL_NULL_INT_PTR, 0, "Whether system supports software development utilities"); SYSCTL_INT(_user, USER_POSIX2_UPE, posix2_upe, CTLFLAG_RD, SYSCTL_NULL_INT_PTR, 0, "Whether system supports the user portability utilities"); SYSCTL_INT(_user, USER_STREAM_MAX, stream_max, CTLFLAG_RD, SYSCTL_NULL_INT_PTR, 0, "Min Maximum number of streams a process may have open at one time"); SYSCTL_INT(_user, USER_TZNAME_MAX, tzname_max, CTLFLAG_RD, SYSCTL_NULL_INT_PTR, 0, "Min Maximum number of types supported for timezone names"); #include SYSCTL_INT(_debug_sizeof, OID_AUTO, vnode, CTLFLAG_RD, SYSCTL_NULL_INT_PTR, sizeof(struct vnode), "sizeof(struct vnode)"); SYSCTL_INT(_debug_sizeof, OID_AUTO, proc, CTLFLAG_RD, SYSCTL_NULL_INT_PTR, sizeof(struct proc), "sizeof(struct proc)"); static int sysctl_kern_pid_max(SYSCTL_HANDLER_ARGS) { int error, pm; pm = pid_max; error = sysctl_handle_int(oidp, &pm, 0, req); if (error || !req->newptr) return (error); sx_xlock(&proctree_lock); sx_xlock(&allproc_lock); /* * Only permit the values less then PID_MAX. * As a safety measure, do not allow to limit the pid_max too much. */ if (pm < 300 || pm > PID_MAX) error = EINVAL; else pid_max = pm; sx_xunlock(&allproc_lock); sx_xunlock(&proctree_lock); return (error); } SYSCTL_PROC(_kern, OID_AUTO, pid_max, CTLTYPE_INT | CTLFLAG_RWTUN | CTLFLAG_NOFETCH | CTLFLAG_MPSAFE, 0, 0, sysctl_kern_pid_max, "I", "Maximum allowed pid"); #include #include SYSCTL_INT(_debug_sizeof, OID_AUTO, bio, CTLFLAG_RD, SYSCTL_NULL_INT_PTR, sizeof(struct bio), "sizeof(struct bio)"); SYSCTL_INT(_debug_sizeof, OID_AUTO, buf, CTLFLAG_RD, SYSCTL_NULL_INT_PTR, sizeof(struct buf), "sizeof(struct buf)"); #include SYSCTL_INT(_debug_sizeof, OID_AUTO, kinfo_proc, CTLFLAG_RD, SYSCTL_NULL_INT_PTR, sizeof(struct kinfo_proc), "sizeof(struct kinfo_proc)"); /* Used by kernel debuggers. */ const int pcb_size = sizeof(struct pcb); SYSCTL_INT(_debug_sizeof, OID_AUTO, pcb, CTLFLAG_RD, SYSCTL_NULL_INT_PTR, sizeof(struct pcb), "sizeof(struct pcb)"); /* XXX compatibility, remove for 6.0 */ #include #include SYSCTL_INT(_kern, OID_AUTO, fallback_elf_brand, CTLFLAG_RW, &__elfN(fallback_brand), sizeof(__elfN(fallback_brand)), "compatibility for kern.fallback_elf_brand");