1 /*- 2 * Copyright (c) 2015 Netflix, Inc. 3 * All rights reserved. 4 * Written by: Scott Long <scottl@freebsd.org> 5 * 6 * Copyright (c) 2008 Yahoo!, Inc. 7 * All rights reserved. 8 * Written by: John Baldwin <jhb@FreeBSD.org> 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. Neither the name of the author nor the names of any co-contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 35 #include <sys/cdefs.h> 36 __RCSID("$FreeBSD: head/usr.sbin/mpsutil/mpsutil.c 330790 2018-03-12 05:03:32Z scottl $"); 37 38 #include <sys/param.h> 39 #include <sys/errno.h> 40 #include <err.h> 41 #include <stdio.h> 42 #include <stdlib.h> 43 #include <string.h> 44 #include <unistd.h> 45 #include "mpsutil.h" 46 47 SET_DECLARE(MPS_DATASET(top), struct mpsutil_command); 48 SET_DECLARE(MPS_DATASET(usage), struct mpsutil_usage); 49 50 int mps_unit; 51 int is_mps; 52 53 static void 54 usage(void) 55 { 56 struct mpsutil_usage **cmd; 57 const char *args, *desc; 58 59 fprintf(stderr, "usage: %s [-u unit] <command> ...\n\n", getprogname()); 60 fprintf(stderr, "Commands include:\n"); 61 SET_FOREACH(cmd, MPS_DATASET(usage)) { 62 if (*cmd == NULL) { 63 fprintf(stderr, "\n"); 64 } else { 65 (*cmd)->handler(&args, &desc); 66 if (strncmp((*cmd)->set, "top", 3) == 0) 67 fprintf(stderr, "%s %-30s\t%s\n", 68 (*cmd)->name, args, desc); 69 else 70 fprintf(stderr, "%s %s %-30s\t%s\n", 71 (*cmd)->set, (*cmd)->name, args, desc); 72 } 73 } 74 exit(1); 75 } 76 77 static int 78 version(int ac, char **av) 79 { 80 81 printf("%s: version %s", MPSUTIL_VERSION, getprogname()); 82 #ifdef DEBUG 83 printf(" (DEBUG)"); 84 #endif 85 printf("\n"); 86 return (0); 87 } 88 89 MPS_COMMAND(top, version, version, "", "version") 90 91 int 92 main(int ac, char **av) 93 { 94 struct mpsutil_command **cmd; 95 int ch; 96 97 is_mps = !strcmp(getprogname(), "mpsutil"); 98 99 while ((ch = getopt(ac, av, "u:h?")) != -1) { 100 switch (ch) { 101 case 'u': 102 mps_unit = atoi(optarg); 103 break; 104 case 'h': 105 case '?': 106 usage(); 107 return (1); 108 } 109 } 110 111 av += optind; 112 ac -= optind; 113 114 /* getopt() eats av[0], so we can't use mpt_table_handler() directly. */ 115 if (ac == 0) { 116 usage(); 117 return (1); 118 } 119 120 SET_FOREACH(cmd, MPS_DATASET(top)) { 121 if (strcmp((*cmd)->name, av[0]) == 0) { 122 if ((*cmd)->handler(ac, av)) 123 return (1); 124 else 125 return (0); 126 } 127 } 128 warnx("Unknown command %s.", av[0]); 129 return (1); 130 } 131 132 int 133 mps_table_handler(struct mpsutil_command **start, struct mpsutil_command **end, 134 int ac, char **av) 135 { 136 struct mpsutil_command **cmd; 137 138 if (ac < 2) { 139 warnx("The %s command requires a sub-command.", av[0]); 140 return (EINVAL); 141 } 142 for (cmd = start; cmd < end; cmd++) { 143 if (strcmp((*cmd)->name, av[1]) == 0) 144 return ((*cmd)->handler(ac - 1, av + 1)); 145 } 146 147 warnx("%s is not a valid sub-command of %s.", av[1], av[0]); 148 return (ENOENT); 149 } 150 151 void 152 hexdump(const void *ptr, int length, const char *hdr, int flags) 153 { 154 int i, j, k; 155 int cols; 156 const unsigned char *cp; 157 char delim; 158 159 if ((flags & HD_DELIM_MASK) != 0) 160 delim = (flags & HD_DELIM_MASK) >> 8; 161 else 162 delim = ' '; 163 164 if ((flags & HD_COLUMN_MASK) != 0) 165 cols = flags & HD_COLUMN_MASK; 166 else 167 cols = 16; 168 169 cp = ptr; 170 for (i = 0; i < length; i+= cols) { 171 if (hdr != NULL) 172 printf("%s", hdr); 173 174 if ((flags & HD_OMIT_COUNT) == 0) 175 printf("%04x ", i); 176 177 if ((flags & HD_OMIT_HEX) == 0) { 178 for (j = 0; j < cols; j++) { 179 if (flags & HD_REVERSED) 180 k = i + (cols - 1 - j); 181 else 182 k = i + j; 183 if (k < length) 184 printf("%c%02x", delim, cp[k]); 185 else 186 printf(" "); 187 } 188 } 189 190 if ((flags & HD_OMIT_CHARS) == 0) { 191 printf(" |"); 192 for (j = 0; j < cols; j++) { 193 if (flags & HD_REVERSED) 194 k = i + (cols - 1 - j); 195 else 196 k = i + j; 197 if (k >= length) 198 printf(" "); 199 else if (cp[k] >= ' ' && cp[k] <= '~') 200 printf("%c", cp[k]); 201 else 202 printf("."); 203 } 204 printf("|"); 205 } 206 printf("\n"); 207 } 208 } 209 210 #define PCHAR(c) { if (retval < tmpsz) { *outbuf++ = (c); retval++; } } 211 212 int 213 mps_parse_flags(uintmax_t num, const char *q, char *outbuf, int tmpsz) 214 { 215 int n, tmp, retval = 0; 216 217 if (num == 0) 218 return (retval); 219 220 /* %b conversion flag format. */ 221 tmp = retval; 222 while (*q) { 223 n = *q++; 224 if (num & (1 << (n - 1))) { 225 PCHAR(retval != tmp ? ',' : '<'); 226 for (; (n = *q) > ' '; ++q) 227 PCHAR(n); 228 } else 229 for (; *q > ' '; ++q) 230 continue; 231 } 232 if (retval != tmp) 233 PCHAR('>'); 234 235 return (retval); 236 } 237 238