1 /* $NetBSD: pstat.c,v 1.125 2015/04/20 19:36:56 riastradh Exp $ */ 2 3 /*- 4 * Copyright (c) 1980, 1991, 1993, 1994 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 #ifndef lint 34 __COPYRIGHT("@(#) Copyright (c) 1980, 1991, 1993, 1994\ 35 The Regents of the University of California. All rights reserved."); 36 #endif /* not lint */ 37 38 #ifndef lint 39 #if 0 40 static char sccsid[] = "@(#)pstat.c 8.16 (Berkeley) 5/9/95"; 41 #else 42 __RCSID("$NetBSD: pstat.c,v 1.125 2015/04/20 19:36:56 riastradh Exp $"); 43 #endif 44 #endif /* not lint */ 45 46 #define _KERNEL 47 #include <sys/types.h> 48 #undef _KERNEL 49 #include <sys/param.h> 50 #include <sys/time.h> 51 #include <sys/vnode.h> 52 #include <sys/ucred.h> 53 #include <stdbool.h> 54 #define _KERNEL 55 #define NFS 56 #include <sys/mount.h> 57 #undef NFS 58 #include <sys/file.h> 59 #include <ufs/ufs/inode.h> 60 #include <ufs/ufs/ufsmount.h> 61 #include <sys/uio.h> 62 #include <miscfs/genfs/layer.h> 63 #undef _KERNEL 64 #include <sys/stat.h> 65 #include <nfs/nfsproto.h> 66 #include <nfs/rpcv2.h> 67 #include <nfs/nfs.h> 68 #include <nfs/nfsnode.h> 69 #include <sys/ioctl.h> 70 #include <sys/tty.h> 71 #include <sys/conf.h> 72 73 #include <sys/sysctl.h> 74 75 #include <err.h> 76 #include <errno.h> 77 #include <kvm.h> 78 #include <limits.h> 79 #include <nlist.h> 80 #include <stdio.h> 81 #include <stdlib.h> 82 #include <string.h> 83 #include <unistd.h> 84 85 #include "swapctl.h" 86 87 struct nlist nl[] = { 88 #define V_MOUNTLIST 0 89 { "_mountlist", 0, 0, 0, 0 }, /* address of head of mount list. */ 90 #define V_NUMV 1 91 { "_numvnodes", 0, 0, 0, 0 }, 92 #define FNL_NFILE 2 93 { "_nfiles", 0, 0, 0, 0 }, 94 #define FNL_MAXFILE 3 95 { "_maxfiles", 0, 0, 0, 0 }, 96 #define TTY_NTTY 4 97 { "_tty_count", 0, 0, 0, 0 }, 98 #define TTY_TTYLIST 5 99 { "_ttylist", 0, 0, 0, 0 }, 100 #define NLMANDATORY TTY_TTYLIST /* names up to here are mandatory */ 101 { "", 0, 0, 0, 0 } 102 }; 103 104 int usenumflag; 105 int totalflag; 106 int kflag; 107 int hflag; 108 char *nlistf = NULL; 109 char *memf = NULL; 110 kvm_t *kd; 111 112 static const char * const dtypes[] = { DTYPE_NAMES }; 113 114 115 static const struct { 116 u_int m_flag; 117 u_int m_visible; 118 const char *m_name; 119 } mnt_flags[] = { 120 __MNT_FLAGS 121 }; 122 123 struct flagbit_desc { 124 u_int fd_flags; 125 char fd_mark; 126 }; 127 128 #define SVAR(var) __STRING(var) /* to force expansion */ 129 #define KGET(idx, var) \ 130 KGET1(idx, &var, sizeof(var), SVAR(var)) 131 #define KGET1(idx, p, s, msg) \ 132 KGET2(nl[idx].n_value, p, s, msg) 133 #define KGET2(addr, p, s, msg) do { \ 134 if (kvm_read(kd, (u_long)(addr), p, s) != s) \ 135 warnx("cannot read %s: %s", msg, kvm_geterr(kd)); \ 136 } while (/* CONSTCOND */0) 137 #define KGETRET(addr, p, s, msg) do { \ 138 if (kvm_read(kd, (u_long)(addr), p, s) != s) { \ 139 warnx("cannot read %s: %s", msg, kvm_geterr(kd)); \ 140 return (0); \ 141 } \ 142 } while (/* CONSTCOND */0) 143 144 #if 1 /* This is copied from vmstat/vmstat.c */ 145 /* 146 * Print single word. `ovflow' is number of characters didn't fit 147 * on the last word. `fmt' is a format string to print this word. 148 * It must contain asterisk for field width. `width' is a width 149 * occupied by this word. `fixed' is a number of constant chars in 150 * `fmt'. `val' is a value to be printed using format string `fmt'. 151 */ 152 #define PRWORD(ovflw, fmt, width, fixed, val) do { \ 153 (ovflw) += printf((fmt), \ 154 (width) - (fixed) - (ovflw) > 0 ? \ 155 (width) - (fixed) - (ovflw) : 0, \ 156 (val)) - (width); \ 157 if ((ovflw) < 0) \ 158 (ovflw) = 0; \ 159 } while (/* CONSTCOND */0) 160 #endif 161 162 void filemode(void); 163 int getfiles(char **, int *, char **); 164 int getflags(const struct flagbit_desc *, char *, u_int); 165 struct mount * 166 getmnt(struct mount *); 167 char * kinfo_vnodes(int *); 168 void layer_header(void); 169 int layer_print(struct vnode *, int); 170 char * loadvnodes(int *); 171 int main(int, char **); 172 void mount_print(struct mount *); 173 void nfs_header(void); 174 int nfs_print(struct vnode *, int); 175 void ttymode(void); 176 void ttyprt(struct tty *); 177 void ufs_header(void); 178 int ufs_print(struct vnode *, int); 179 int ext2fs_print(struct vnode *, int); 180 __dead void usage(void); 181 void vnode_header(void); 182 int vnode_print(struct vnode *, struct vnode *); 183 void vnodemode(void); 184 185 int 186 main(int argc, char *argv[]) 187 { 188 int ch, i, quit, ret, use_sysctl; 189 int fileflag, swapflag, ttyflag, vnodeflag; 190 gid_t egid = getegid(); 191 char buf[_POSIX2_LINE_MAX]; 192 193 setegid(getgid()); 194 fileflag = swapflag = ttyflag = vnodeflag = 0; 195 while ((ch = getopt(argc, argv, "TM:N:fghikmnstv")) != -1) 196 switch (ch) { 197 case 'f': 198 fileflag = 1; 199 break; 200 case 'M': 201 memf = optarg; 202 break; 203 case 'N': 204 nlistf = optarg; 205 break; 206 case 'n': 207 usenumflag = 1; 208 break; 209 case 's': 210 swapflag = 1; 211 break; 212 case 'T': 213 totalflag = 1; 214 break; 215 case 't': 216 ttyflag = 1; 217 break; 218 case 'k': 219 kflag = 1; 220 break; 221 case 'g': 222 kflag = 3; /* 1k ^ 3 */ 223 break; 224 case 'h': 225 hflag = 1; 226 break; 227 case 'm': 228 kflag = 2; /* 1k ^ 2 */ 229 break; 230 case 'v': 231 case 'i': /* Backward compatibility. */ 232 vnodeflag = 1; 233 break; 234 default: 235 usage(); 236 } 237 argc -= optind; 238 argv += optind; 239 240 /* 241 * Discard setgid privileges. If not the running kernel, we toss 242 * them away totally so that bad guys can't print interesting stuff 243 * from kernel memory, otherwise switch back to kmem for the 244 * duration of the kvm_openfiles() call. 245 */ 246 if (nlistf != NULL || memf != NULL) 247 (void)setgid(getgid()); 248 else 249 (void)setegid(egid); 250 251 use_sysctl = (nlistf == NULL && memf == NULL); 252 253 if ((kd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, buf)) == 0) 254 errx(1, "kvm_openfiles: %s", buf); 255 256 /* get rid of it now anyway */ 257 if (nlistf == NULL && memf == NULL) 258 (void)setgid(getgid()); 259 if ((ret = kvm_nlist(kd, nl)) != 0) { 260 if (ret == -1) 261 errx(1, "kvm_nlist: %s", kvm_geterr(kd)); 262 for (i = quit = 0; i <= NLMANDATORY; i++) 263 if (!nl[i].n_value) { 264 quit = 1; 265 warnx("undefined symbol: %s", nl[i].n_name); 266 } 267 if (quit) 268 exit(1); 269 } 270 if (!(fileflag | vnodeflag | ttyflag | swapflag | totalflag)) 271 usage(); 272 if (fileflag || totalflag) 273 filemode(); 274 if (vnodeflag || totalflag) 275 vnodemode(); 276 if (ttyflag) 277 ttymode(); 278 if (swapflag || totalflag) 279 if (use_sysctl) 280 list_swap(0, kflag, 0, totalflag, 1, hflag); 281 exit(0); 282 } 283 284 #define VPTRSZ sizeof(struct vnode *) 285 #define VNODESZ sizeof(struct vnode) 286 #define PTRSTRWIDTH ((int)sizeof(void *) * 2) /* Width of resulting string 287 when pointer is printed 288 in hexadecimal. */ 289 290 static void 291 devprintf(char *buf, size_t buflen, dev_t dev) 292 { 293 (void)snprintf(buf, buflen, "%llu,%llu", 294 (unsigned long long)major(dev), 295 (unsigned long long)minor(dev)); 296 } 297 298 void 299 vnodemode(void) 300 { 301 char *e_vnodebase, *endvnode, *evp; 302 struct vnode *vp; 303 struct mount *maddr, *mp; 304 int numvnodes, ovflw; 305 int (*vnode_fsprint) (struct vnode *, int); /* per-fs data printer */ 306 307 mp = NULL; 308 e_vnodebase = loadvnodes(&numvnodes); 309 if (totalflag) { 310 (void)printf("%7d vnodes\n", numvnodes); 311 goto out; 312 } 313 endvnode = e_vnodebase + numvnodes * (VPTRSZ + VNODESZ); 314 (void)printf("%d active vnodes\n", numvnodes); 315 316 #define ST mp->mnt_stat 317 #define FSTYPE_IS(mp, name) \ 318 (strncmp((mp)->mnt_stat.f_fstypename, (name), \ 319 sizeof((mp)->mnt_stat.f_fstypename)) == 0) 320 maddr = NULL; 321 vnode_fsprint = NULL; 322 for (evp = e_vnodebase; evp < endvnode; evp += VPTRSZ + VNODESZ) { 323 vp = (struct vnode *)(evp + VPTRSZ); 324 if (vp->v_mount != maddr) { 325 /* 326 * New filesystem 327 */ 328 if ((mp = getmnt(vp->v_mount)) == NULL) 329 continue; 330 maddr = vp->v_mount; 331 mount_print(mp); 332 vnode_header(); 333 /* 334 * XXX do this in a more fs-independent way 335 */ 336 if (FSTYPE_IS(mp, MOUNT_FFS) || 337 FSTYPE_IS(mp, MOUNT_MFS)) { 338 ufs_header(); 339 vnode_fsprint = ufs_print; 340 } else if (FSTYPE_IS(mp, MOUNT_NFS)) { 341 nfs_header(); 342 vnode_fsprint = nfs_print; 343 } else if (FSTYPE_IS(mp, MOUNT_EXT2FS)) { 344 ufs_header(); 345 vnode_fsprint = ext2fs_print; 346 } else if (FSTYPE_IS(mp, MOUNT_NULL) || 347 FSTYPE_IS(mp, MOUNT_OVERLAY) || 348 FSTYPE_IS(mp, MOUNT_UMAP)) { 349 layer_header(); 350 vnode_fsprint = layer_print; 351 } else 352 vnode_fsprint = NULL; 353 (void)printf("\n"); 354 } 355 ovflw = vnode_print(*(struct vnode **)evp, vp); 356 if (VTOI(vp) != NULL && vnode_fsprint != NULL) 357 (*vnode_fsprint)(vp, ovflw); 358 (void)printf("\n"); 359 } 360 361 out: 362 if (e_vnodebase) 363 free(e_vnodebase); 364 } 365 366 int 367 getflags(const struct flagbit_desc *fd, char *p, u_int flags) 368 { 369 char *q = p; 370 371 if (flags == 0) { 372 *p++ = '-'; 373 *p = '\0'; 374 return (0); 375 } 376 377 for (; fd->fd_flags != 0; fd++) 378 if ((flags & fd->fd_flags) != 0) 379 *p++ = fd->fd_mark; 380 *p = '\0'; 381 return (p - q); 382 } 383 384 const struct flagbit_desc vnode_flags[] = { 385 { VV_ROOT, 'R' }, 386 { VI_TEXT, 'T' }, 387 { VV_SYSTEM, 'S' }, 388 { VV_ISTTY, 'I' }, 389 { VI_EXECMAP, 'E' }, 390 { VU_DIROP, 'D' }, 391 { VI_ONWORKLST, 'O' }, 392 { 0, '\0' }, 393 }; 394 395 void 396 vnode_header(void) 397 { 398 399 (void)printf("%-*s TYP VFLAG USE HOLD TAG NPAGE", 400 PTRSTRWIDTH, "ADDR"); 401 } 402 403 int 404 vnode_print(struct vnode *avnode, struct vnode *vp) 405 { 406 const char *type; 407 char flags[sizeof(vnode_flags) / sizeof(vnode_flags[0])]; 408 int ovflw; 409 410 /* 411 * set type 412 */ 413 switch (vp->v_type) { 414 case VNON: 415 type = "non"; break; 416 case VREG: 417 type = "reg"; break; 418 case VDIR: 419 type = "dir"; break; 420 case VBLK: 421 type = "blk"; break; 422 case VCHR: 423 type = "chr"; break; 424 case VLNK: 425 type = "lnk"; break; 426 case VSOCK: 427 type = "soc"; break; 428 case VFIFO: 429 type = "fif"; break; 430 case VBAD: 431 type = "bad"; break; 432 default: 433 type = "unk"; break; 434 } 435 /* 436 * gather flags 437 */ 438 (void)getflags(vnode_flags, flags, 439 vp->v_uflag | vp->v_iflag | vp->v_vflag); 440 441 ovflw = 0; 442 PRWORD(ovflw, "%*lx", PTRSTRWIDTH, 0, (long)avnode); 443 PRWORD(ovflw, " %*s", 4, 1, type); 444 PRWORD(ovflw, " %*s", 6, 1, flags); 445 PRWORD(ovflw, " %*ld", 5, 1, (long)vp->v_usecount); 446 PRWORD(ovflw, " %*ld", 5, 1, (long)vp->v_holdcnt); 447 PRWORD(ovflw, " %*d", 4, 1, vp->v_tag); 448 PRWORD(ovflw, " %*d", 6, 1, vp->v_uobj.uo_npages); 449 return (ovflw); 450 } 451 452 const struct flagbit_desc ufs_flags[] = { 453 { IN_ACCESS, 'A' }, 454 { IN_CHANGE, 'C' }, 455 { IN_UPDATE, 'U' }, 456 { IN_MODIFIED, 'M' }, 457 { IN_ACCESSED, 'a' }, 458 { IN_SHLOCK, 'S' }, 459 { IN_EXLOCK, 'E' }, 460 { IN_SPACECOUNTED, 's' }, 461 { 0, '\0' }, 462 }; 463 464 void 465 ufs_header(void) 466 { 467 468 (void)printf(" FILEID IFLAG RDEV|SZ"); 469 } 470 471 int 472 ufs_print(struct vnode *vp, int ovflw) 473 { 474 struct inode inode, *ip = &inode; 475 union dinode { 476 struct ufs1_dinode dp1; 477 struct ufs2_dinode dp2; 478 } dip; 479 struct ufsmount ump; 480 char flags[sizeof(ufs_flags) / sizeof(ufs_flags[0])]; 481 char dev[4 + 1 + 7 + 1]; /* 12bit marjor + 20bit minor */ 482 char *name; 483 mode_t type; 484 dev_t rdev; 485 486 KGETRET(VTOI(vp), &inode, sizeof(struct inode), "vnode's inode"); 487 KGETRET(ip->i_ump, &ump, sizeof(struct ufsmount), 488 "vnode's mount point"); 489 490 if (ump.um_fstype == UFS1) { 491 KGETRET(ip->i_din.ffs1_din, &dip, sizeof (struct ufs1_dinode), 492 "inode's dinode"); 493 rdev = (uint32_t)dip.dp1.di_rdev; 494 } else { 495 KGETRET(ip->i_din.ffs2_din, &dip, sizeof (struct ufs2_dinode), 496 "inode's UFS2 dinode"); 497 rdev = dip.dp2.di_rdev; 498 } 499 500 /* 501 * XXX need to to locking state. 502 */ 503 504 (void)getflags(ufs_flags, flags, ip->i_flag); 505 PRWORD(ovflw, " %*llu", 7, 1, (unsigned long long)ip->i_number); 506 PRWORD(ovflw, " %*s", 6, 1, flags); 507 type = ip->i_mode & S_IFMT; 508 if (S_ISCHR(ip->i_mode) || S_ISBLK(ip->i_mode)) { 509 if (usenumflag || 510 (name = devname(rdev, type)) == NULL) { 511 devprintf(dev, sizeof(dev), rdev); 512 name = dev; 513 } 514 PRWORD(ovflw, " %*s", 8, 1, name); 515 } else 516 PRWORD(ovflw, " %*lld", 8, 1, (long long)ip->i_size); 517 return 0; 518 } 519 520 int 521 ext2fs_print(struct vnode *vp, int ovflw) 522 { 523 struct inode inode, *ip = &inode; 524 struct ext2fs_dinode dip; 525 char flags[sizeof(ufs_flags) / sizeof(ufs_flags[0])]; 526 char dev[4 + 1 + 7 + 1]; /* 12bit marjor + 20bit minor */ 527 char *name; 528 mode_t type; 529 530 KGETRET(VTOI(vp), &inode, sizeof(struct inode), "vnode's inode"); 531 KGETRET(ip->i_din.e2fs_din, &dip, sizeof (struct ext2fs_dinode), 532 "inode's dinode"); 533 534 /* 535 * XXX need to to locking state. 536 */ 537 538 (void)getflags(ufs_flags, flags, ip->i_flag); 539 PRWORD(ovflw, " %*llu", 7, 1, (unsigned long long)ip->i_number); 540 PRWORD(ovflw, " %*s", 6, 1, flags); 541 type = dip.e2di_mode & S_IFMT; 542 if (S_ISCHR(dip.e2di_mode) || S_ISBLK(dip.e2di_mode)) { 543 if (usenumflag || 544 (name = devname(dip.e2di_rdev, type)) == NULL) { 545 devprintf(dev, sizeof(dev), dip.e2di_rdev); 546 name = dev; 547 } 548 PRWORD(ovflw, " %*s", 8, 1, name); 549 } else 550 PRWORD(ovflw, " %*u", 8, 1, (u_int)dip.e2di_size); 551 return (0); 552 } 553 554 const struct flagbit_desc nfs_flags[] = { 555 { NFLUSHWANT, 'W' }, 556 { NFLUSHINPROG, 'P' }, 557 { NMODIFIED, 'M' }, 558 { NWRITEERR, 'E' }, 559 { NACC, 'A' }, 560 { NUPD, 'U' }, 561 { NCHG, 'C' }, 562 { 0, '\0' }, 563 }; 564 565 void 566 nfs_header(void) 567 { 568 569 (void)printf(" FILEID NFLAG RDEV|SZ"); 570 } 571 572 int 573 nfs_print(struct vnode *vp, int ovflw) 574 { 575 struct nfsnode nfsnode, *np = &nfsnode; 576 char flags[sizeof(nfs_flags) / sizeof(nfs_flags[0])]; 577 char dev[4 + 1 + 7 + 1]; /* 12bit marjor + 20bit minor */ 578 struct vattr va; 579 char *name; 580 mode_t type; 581 582 KGETRET(VTONFS(vp), &nfsnode, sizeof(nfsnode), "vnode's nfsnode"); 583 (void)getflags(nfs_flags, flags, np->n_flag); 584 585 KGETRET(np->n_vattr, &va, sizeof(va), "vnode attr"); 586 PRWORD(ovflw, " %*ld", 7, 1, (long)va.va_fileid); 587 PRWORD(ovflw, " %*s", 6, 1, flags); 588 switch (va.va_type) { 589 case VCHR: 590 type = S_IFCHR; 591 goto device; 592 593 case VBLK: 594 type = S_IFBLK; 595 device: 596 if (usenumflag || (name = devname(va.va_rdev, type)) == NULL) { 597 devprintf(dev, sizeof(dev), va.va_rdev); 598 name = dev; 599 } 600 PRWORD(ovflw, " %*s", 8, 1, name); 601 break; 602 default: 603 PRWORD(ovflw, " %*lld", 8, 1, (long long)np->n_size); 604 break; 605 } 606 return (0); 607 } 608 609 void 610 layer_header(void) 611 { 612 613 (void)printf(" %*s", PTRSTRWIDTH, "LOWER"); 614 } 615 616 int 617 layer_print(struct vnode *vp, int ovflw) 618 { 619 struct layer_node lnode, *lp = &lnode; 620 621 KGETRET(VTOLAYER(vp), &lnode, sizeof(lnode), "layer vnode"); 622 623 PRWORD(ovflw, " %*lx", PTRSTRWIDTH + 1, 1, (long)lp->layer_lowervp); 624 return (0); 625 } 626 627 /* 628 * Given a pointer to a mount structure in kernel space, 629 * read it in and return a usable pointer to it. 630 */ 631 struct mount * 632 getmnt(struct mount *maddr) 633 { 634 static struct mtab { 635 struct mtab *next; 636 struct mount *maddr; 637 struct mount mount; 638 } *mhead = NULL; 639 struct mtab *mt; 640 struct mount mb; 641 642 for (mt = mhead; mt != NULL; mt = mt->next) 643 if (maddr == mt->maddr) 644 return (&mt->mount); 645 KGETRET(maddr, &mb, sizeof(struct mount), "mount table"); 646 if ((mt = malloc(sizeof(struct mtab))) == NULL) 647 err(1, "malloc"); 648 mt->mount = mb; 649 mt->maddr = maddr; 650 mt->next = mhead; 651 mhead = mt; 652 return (&mt->mount); 653 } 654 655 void 656 mount_print(struct mount *mp) 657 { 658 int flags; 659 660 (void)printf("*** MOUNT %s %s on %s", ST.f_fstypename, 661 ST.f_mntfromname, ST.f_mntonname); 662 if ((flags = mp->mnt_flag) != 0) { 663 size_t i; 664 const char *sep = " ("; 665 666 for (i = 0; i < sizeof mnt_flags / sizeof mnt_flags[0]; i++) { 667 if (flags & mnt_flags[i].m_flag) { 668 (void)printf("%s%s", sep, mnt_flags[i].m_name); 669 flags &= ~mnt_flags[i].m_flag; 670 sep = ","; 671 } 672 } 673 if (flags) 674 (void)printf("%sunknown_flags:%x", sep, flags); 675 (void)printf(")"); 676 } 677 (void)printf("\n"); 678 } 679 680 char * 681 loadvnodes(int *avnodes) 682 { 683 int mib[2]; 684 int status; 685 size_t copysize; 686 #if 0 687 size_t oldsize; 688 #endif 689 char *vnodebase; 690 691 if (totalflag) { 692 KGET(V_NUMV, *avnodes); 693 return NULL; 694 } 695 if (memf != NULL) { 696 /* 697 * do it by hand 698 */ 699 return (kinfo_vnodes(avnodes)); 700 } 701 mib[0] = CTL_KERN; 702 mib[1] = KERN_VNODE; 703 /* 704 * First sysctl call gets the necessary buffer size; second 705 * sysctl call gets the data. We allow for some growth in the 706 * data size between the two sysctl calls (increases of a few 707 * thousand vnodes in between the two calls have been observed). 708 * We ignore ENOMEM from the second sysctl call, which can 709 * happen if the kernel's data grew by even more than we allowed 710 * for. 711 */ 712 if (sysctl(mib, 2, NULL, ©size, NULL, 0) == -1) 713 err(1, "sysctl: KERN_VNODE"); 714 #if 0 715 oldsize = copysize; 716 #endif 717 copysize += 100 * sizeof(struct vnode) + copysize / 20; 718 if ((vnodebase = malloc(copysize)) == NULL) 719 err(1, "malloc"); 720 status = sysctl(mib, 2, vnodebase, ©size, NULL, 0); 721 if (status == -1 && errno != ENOMEM) 722 err(1, "sysctl: KERN_VNODE"); 723 #if 0 /* for debugging the amount of growth allowed for */ 724 if (copysize != oldsize) { 725 warnx("count changed from %ld to %ld (%+ld)%s", 726 (long)(oldsize / sizeof(struct vnode)), 727 (long)(copysize / sizeof(struct vnode)), 728 (long)(copysize / sizeof(struct vnode)) - 729 (long)(oldsize / sizeof(struct vnode)), 730 (status == 0 ? "" : ", and errno = ENOMEM")); 731 } 732 #endif 733 if (copysize % (VPTRSZ + VNODESZ)) 734 errx(1, "vnode size mismatch"); 735 *avnodes = copysize / (VPTRSZ + VNODESZ); 736 737 return (vnodebase); 738 } 739 740 /* 741 * simulate what a running kernel does in in kinfo_vnode 742 */ 743 char * 744 kinfo_vnodes(int *avnodes) 745 { 746 struct mntlist mlist; 747 struct mount *mp, mount; 748 struct vnode *vp, vnode; 749 char *beg, *bp, *ep; 750 int numvnodes; 751 752 KGET(V_NUMV, numvnodes); 753 if ((bp = malloc((numvnodes + 20) * (VPTRSZ + VNODESZ))) == NULL) 754 err(1, "malloc"); 755 beg = bp; 756 ep = bp + (numvnodes + 20) * (VPTRSZ + VNODESZ); 757 KGET(V_MOUNTLIST, mlist); 758 TAILQ_FOREACH(mp, &mlist, mnt_list) { 759 KGET2(mp, &mount, sizeof(mount), "mount entry"); 760 TAILQ_FOREACH(vp, &mount.mnt_vnodelist, v_mntvnodes) { 761 KGET2(vp, &vnode, sizeof(vnode), "vnode"); 762 if (bp + VPTRSZ + VNODESZ > ep) 763 /* XXX - should realloc */ 764 errx(1, "no more room for vnodes"); 765 memmove(bp, &vp, VPTRSZ); 766 bp += VPTRSZ; 767 memmove(bp, &vnode, VNODESZ); 768 bp += VNODESZ; 769 } 770 } 771 *avnodes = (bp - beg) / (VPTRSZ + VNODESZ); 772 return (beg); 773 } 774 775 void 776 ttymode(void) 777 { 778 int ntty; 779 struct ttylist_head tty_head; 780 struct tty *tp, tty; 781 782 KGET(TTY_NTTY, ntty); 783 (void)printf("%d terminal device%s\n", ntty, ntty == 1 ? "" : "s"); 784 KGET(TTY_TTYLIST, tty_head); 785 (void)printf( 786 " LINE RAW CAN OUT HWT LWT COL STATE %-*s PGID DISC\n", 787 PTRSTRWIDTH, "SESS"); 788 for (tp = tty_head.tqh_first; tp; tp = tty.tty_link.tqe_next) { 789 KGET2(tp, &tty, sizeof tty, "tty struct"); 790 ttyprt(&tty); 791 } 792 } 793 794 static const struct flagbit_desc ttystates[] = { 795 { TS_ISOPEN, 'O'}, 796 { TS_DIALOUT, '>'}, 797 { TS_CARR_ON, 'C'}, 798 { TS_TIMEOUT, 'T'}, 799 { TS_FLUSH, 'F'}, 800 { TS_BUSY, 'B'}, 801 { TS_XCLUDE, 'X'}, 802 { TS_TTSTOP, 'S'}, 803 { TS_TBLOCK, 'K'}, 804 { TS_ASYNC, 'Y'}, 805 { TS_BKSL, 'D'}, 806 { TS_ERASE, 'E'}, 807 { TS_LNCH, 'L'}, 808 { TS_TYPEN, 'P'}, 809 { TS_CNTTB, 'N'}, 810 { 0, '\0'}, 811 }; 812 813 void 814 ttyprt(struct tty *tp) 815 { 816 char state[sizeof(ttystates) / sizeof(ttystates[0]) + 1]; 817 char dev[2 + 3 + 1 + 5 + 1]; /* 12bit major + 20bit minor */ 818 struct linesw t_linesw; 819 const char *name; 820 char buffer; 821 pid_t pgid; 822 int n, ovflw; 823 824 if (usenumflag || (name = devname(tp->t_dev, S_IFCHR)) == NULL) { 825 devprintf(dev, sizeof(dev), tp->t_dev); 826 name = dev; 827 } 828 ovflw = 0; 829 PRWORD(ovflw, "%-*s", 7, 0, name); 830 PRWORD(ovflw, " %*d", 3, 1, tp->t_rawq.c_cc); 831 PRWORD(ovflw, " %*d", 4, 1, tp->t_canq.c_cc); 832 PRWORD(ovflw, " %*d", 4, 1, tp->t_outq.c_cc); 833 PRWORD(ovflw, " %*d", 5, 1, tp->t_hiwat); 834 PRWORD(ovflw, " %*d", 4, 1, tp->t_lowat); 835 PRWORD(ovflw, " %*d", 8, 1, tp->t_column); 836 n = getflags(ttystates, state, tp->t_state); 837 if (tp->t_wopen) { 838 state[n++] = 'W'; 839 state[n] = '\0'; 840 } 841 PRWORD(ovflw, " %-*s", 7, 1, state); 842 PRWORD(ovflw, " %*lX", PTRSTRWIDTH + 1, 1, (u_long)tp->t_session); 843 pgid = 0; 844 if (tp->t_pgrp != NULL) 845 KGET2(&tp->t_pgrp->pg_id, &pgid, sizeof(pid_t), "pgid"); 846 PRWORD(ovflw, " %*d", 6, 1, pgid); 847 KGET2(tp->t_linesw, &t_linesw, sizeof(t_linesw), 848 "line discipline switch table"); 849 name = t_linesw.l_name; 850 (void)putchar(' '); 851 for (;;) { 852 KGET2(name, &buffer, sizeof(buffer), "line discipline name"); 853 if (buffer == '\0') 854 break; 855 (void)putchar(buffer); 856 name++; 857 } 858 (void)putchar('\n'); 859 } 860 861 static const struct flagbit_desc filemode_flags[] = { 862 { FREAD, 'R' }, 863 { FWRITE, 'W' }, 864 { FAPPEND, 'A' }, 865 #ifdef FSHLOCK /* currently gone */ 866 { FSHLOCK, 'S' }, 867 { FEXLOCK, 'X' }, 868 #endif 869 { FASYNC, 'I' }, 870 { 0, '\0' }, 871 }; 872 873 void 874 filemode(void) 875 { 876 struct kinfo_file *ki; 877 char flags[sizeof(filemode_flags) / sizeof(filemode_flags[0])]; 878 char *buf, *offset; 879 int len, maxfile, nfile, ovflw; 880 881 KGET(FNL_MAXFILE, maxfile); 882 if (totalflag) { 883 KGET(FNL_NFILE, nfile); 884 (void)printf("%3d/%3d files\n", nfile, maxfile); 885 return; 886 } 887 if (getfiles(&buf, &len, &offset) == -1) 888 return; 889 /* 890 * Getfiles returns in malloc'd memory to an array of kinfo_file2 891 * structures. 892 */ 893 nfile = len / sizeof(struct kinfo_file); 894 895 (void)printf("%d/%d open files\n", nfile, maxfile); 896 (void)printf("%*s%s%*s TYPE FLG CNT MSG %*s%s%*s IFLG OFFSET\n", 897 (PTRSTRWIDTH - 4) / 2, "", " LOC", (PTRSTRWIDTH - 4) / 2, "", 898 (PTRSTRWIDTH - 4) / 2, "", "DATA", (PTRSTRWIDTH - 4) / 2, ""); 899 for (ki = (struct kinfo_file *)offset; nfile--; ki++) { 900 if ((unsigned)ki->ki_ftype >= sizeof(dtypes) / sizeof(dtypes[0])) 901 continue; 902 ovflw = 0; 903 (void)getflags(filemode_flags, flags, ki->ki_flag); 904 PRWORD(ovflw, "%*lx", PTRSTRWIDTH, 0, (long)ki->ki_fileaddr); 905 PRWORD(ovflw, " %-*s", 9, 1, dtypes[ki->ki_ftype]); 906 PRWORD(ovflw, " %*s", 6, 1, flags); 907 PRWORD(ovflw, " %*d", 5, 1, ki->ki_count); 908 PRWORD(ovflw, " %*d", 5, 1, ki->ki_msgcount); 909 PRWORD(ovflw, " %*lx", PTRSTRWIDTH + 1, 2, (long)ki->ki_fdata); 910 PRWORD(ovflw, " %*x", 5, 1, 0); 911 if ((off_t)ki->ki_foffset < 0) 912 PRWORD(ovflw, " %-*lld\n", PTRSTRWIDTH + 1, 2, 913 (long long)ki->ki_foffset); 914 else 915 PRWORD(ovflw, " %-*lld\n", PTRSTRWIDTH + 1, 2, 916 (long long)ki->ki_foffset); 917 } 918 free(buf); 919 } 920 921 int 922 getfiles(char **abuf, int *alen, char **aoffset) 923 { 924 size_t len; 925 int mib[6]; 926 char *buf; 927 size_t offset; 928 929 /* 930 * XXX 931 * Add emulation of KINFO_FILE here. 932 */ 933 if (memf != NULL) 934 errx(1, "files on dead kernel, not implemented"); 935 936 mib[0] = CTL_KERN; 937 mib[1] = KERN_FILE2; 938 mib[2] = KERN_FILE_BYFILE; 939 mib[3] = 0; 940 mib[4] = sizeof(struct kinfo_file); 941 mib[5] = 0; 942 if (sysctl(mib, 6, NULL, &len, NULL, 0) == -1) { 943 warn("sysctl: KERN_FILE2"); 944 return (-1); 945 } 946 /* We need to align (struct kinfo_file *) in the buffer. */ 947 offset = len % sizeof(off_t); 948 mib[5] = len / sizeof(struct kinfo_file); 949 if ((buf = malloc(len + offset)) == NULL) 950 err(1, "malloc"); 951 if (sysctl(mib, 6, buf + offset, &len, NULL, 0) == -1) { 952 warn("sysctl: 2nd KERN_FILE2"); 953 free(buf); 954 return (-1); 955 } 956 *abuf = buf; 957 *alen = len; 958 *aoffset = (buf + offset); 959 return (0); 960 } 961 962 void 963 usage(void) 964 { 965 966 (void)fprintf(stderr, 967 "usage: %s [-T|-f|-s|-t|-v] [-ghkmn] [-M core] [-N system]\n", 968 getprogname()); 969 exit(1); 970 } 971