1 /* $NetBSD: nvmmctl.c,v 1.2 2020/09/05 07:22:26 maxv Exp $ */ 2 3 /* 4 * Copyright (c) 2019-2020 Maxime Villard, m00nbsd.net 5 * All rights reserved. 6 * 7 * This code is part of the NVMM hypervisor. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 23 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 24 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 25 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 */ 30 31 #include <sys/cdefs.h> 32 #ifndef lint 33 __RCSID("$NetBSD: nvmmctl.c,v 1.2 2020/09/05 07:22:26 maxv Exp $"); 34 #endif /* not lint */ 35 36 #include <sys/param.h> 37 38 #include <err.h> 39 #include <errno.h> 40 #include <fcntl.h> 41 #include <stdio.h> 42 #include <stdlib.h> 43 #include <stdarg.h> 44 #include <stdbool.h> 45 #include <string.h> 46 #include <unistd.h> 47 #include <time.h> 48 #include <util.h> 49 #include <nvmm.h> 50 51 #include <x86/specialreg.h> 52 53 __dead static void usage(void); 54 static void nvmm_identify(char **); 55 static void nvmm_list(char **); 56 57 static struct cmdtab { 58 const char *label; 59 bool takesargs; 60 bool argsoptional; 61 void (*func)(char **); 62 } const nvmm_cmdtab[] = { 63 { "identify", false, false, nvmm_identify }, 64 { "list", false, false, nvmm_list }, 65 { NULL, false, false, NULL }, 66 }; 67 68 static struct nvmm_capability cap; 69 70 int 71 main(int argc, char **argv) 72 { 73 const struct cmdtab *ct; 74 75 argc -= 1; 76 argv += 1; 77 if (argc < 1) 78 usage(); 79 80 for (ct = nvmm_cmdtab; ct->label != NULL; ct++) { 81 if (strcmp(argv[0], ct->label) == 0) { 82 if (!ct->argsoptional && 83 ((ct->takesargs == 0) ^ (argv[1] == NULL))) 84 { 85 usage(); 86 } 87 (*ct->func)(argv + 1); 88 break; 89 } 90 } 91 92 if (ct->label == NULL) 93 errx(EXIT_FAILURE, "unknown command ``%s''", argv[0]); 94 95 exit(EXIT_SUCCESS); 96 /* NOTREACHED */ 97 } 98 99 static void 100 usage(void) 101 { 102 const char *progname = getprogname(); 103 104 fprintf(stderr, "usage: %s identify\n", progname); 105 fprintf(stderr, " %s list\n", progname); 106 exit(EXIT_FAILURE); 107 /* NOTREACHED */ 108 } 109 110 #define MACH_CONF_FLAGS "\20" 111 #define VCPU_CONF_FLAGS "\20" "\1" "CPUID" "\2" "TPR" 112 113 static void 114 nvmm_identify(char **argv) 115 { 116 char buf[256], ram[4+1]; 117 118 if (nvmm_init() == -1) 119 err(EXIT_FAILURE, "nvmm_init failed"); 120 if (nvmm_capability(&cap) == -1) 121 err(EXIT_FAILURE, "nvmm_capability failed"); 122 123 printf("nvmm: Kernel API version %u\n", cap.version); 124 printf("nvmm: State size %u\n", cap.state_size); 125 printf("nvmm: Max machines %u\n", cap.max_machines); 126 printf("nvmm: Max VCPUs per machine %u\n", cap.max_vcpus); 127 128 if (humanize_number(ram, sizeof(ram), cap.max_ram, NULL, HN_AUTOSCALE, 129 (HN_DECIMAL | HN_B | HN_NOSPACE)) == -1) 130 err(EXIT_FAILURE, "humanize_number"); 131 printf("nvmm: Max RAM per machine %s\n", ram); 132 133 snprintb(buf, sizeof(buf), MACH_CONF_FLAGS, cap.arch.mach_conf_support); 134 printf("nvmm: Arch Mach conf %s\n", buf); 135 136 snprintb(buf, sizeof(buf), VCPU_CONF_FLAGS, cap.arch.vcpu_conf_support); 137 printf("nvmm: Arch VCPU conf %s\n", buf); 138 139 snprintb(buf, sizeof(buf), XCR0_FLAGS1, cap.arch.xcr0_mask); 140 printf("nvmm: Guest FPU states %s\n", buf); 141 } 142 143 static void 144 nvmm_list(char **argv) 145 { 146 struct nvmm_ctl_mach_info machinfo; 147 char ram[4+1], *ts; 148 size_t i; 149 int ret; 150 151 if (nvmm_root_init() == -1) 152 err(EXIT_FAILURE, "nvmm_root_init failed"); 153 if (nvmm_capability(&cap) == -1) 154 err(EXIT_FAILURE, "nvmm_capability failed"); 155 156 printf( 157 "Machine ID VCPUs RAM Owner PID Creation Time \n" 158 "---------- ----- ---- --------- ------------------------\n"); 159 160 for (i = 0; i < cap.max_machines; i++) { 161 machinfo.machid = i; 162 ret = nvmm_ctl(NVMM_CTL_MACH_INFO, &machinfo, sizeof(machinfo)); 163 if (ret == -1) { 164 if (errno == ENOENT) 165 continue; 166 err(EXIT_FAILURE, "nvmm_ctl failed"); 167 } 168 169 ts = asctime(localtime(&machinfo.time)); 170 ts[strlen(ts) - 1] = '\0'; 171 172 if (humanize_number(ram, sizeof(ram), machinfo.nram, NULL, 173 HN_AUTOSCALE, (HN_DECIMAL | HN_B | HN_NOSPACE)) == -1) 174 err(EXIT_FAILURE, "humanize_number"); 175 176 printf("%-10zu %-5u %-4s %-9d %s\n", i, machinfo.nvcpus, ram, 177 machinfo.pid, ts); 178 } 179 } 180
Indexes created Tue Sep 23 07:09:52 GMT 2025