1 /* $NetBSD: pstat.c,v 1.134 2022/02/17 14:39:14 hannken 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 1.134 2022/02/17 14:39:14 hannken 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_LRU_LIST 0 89 { "_lru_list", 0, 0, 0, 0 } , /* address of lru lists. */ 90 #define V_NUMV 1 91 { "_numvnodes", 0, 0, 0, 0 }, 92 #define V_NEXT_OFFSET 2 93 { "_vnode_offset_next_by_lru", 0, 0, 0, 0 }, 94 #define FNL_NFILE 3 95 { "_nfiles", 0, 0, 0, 0 }, 96 #define FNL_MAXFILE 4 97 { "_maxfiles", 0, 0, 0, 0 }, 98 #define TTY_NTTY 5 99 { "_tty_count", 0, 0, 0, 0 }, 100 #define TTY_TTYLIST 6 101 { "_ttylist", 0, 0, 0, 0 }, 102 #define NLMANDATORY TTY_TTYLIST /* names up to here are mandatory */ 103 { "", 0, 0, 0, 0 } 104 }; 105 106 int usenumflag; 107 int totalflag; 108 int kflag; 109 int hflag; 110 char *nlistf = NULL; 111 char *memf = NULL; 112 kvm_t *kd; 113 114 static const char * const dtypes[] = { DTYPE_NAMES }; 115 116 117 static const struct { 118 u_int m_flag; 119 u_int m_visible; 120 const char *m_name; 121 } mnt_flags[] = { 122 __MNT_FLAGS 123 }; 124 125 struct flagbit_desc { 126 u_int fd_flags; 127 char fd_mark; 128 }; 129 130 #define SVAR(var) __STRING(var) /* to force expansion */ 131 #define KGET(idx, var) \ 132 KGET1(idx, &var, sizeof(var), SVAR(var)) 133 #define KGET1(idx, p, s, msg) \ 134 KGET2(nl[idx].n_value, p, s, msg) 135 #define KGET2(addr, p, s, msg) do { \ 136 if (kvm_read(kd, (u_long)(addr), p, s) != s) \ 137 warnx("cannot read %s: %s", msg, kvm_geterr(kd)); \ 138 } while (0) 139 #define KGETRET(addr, p, s, msg) do { \ 140 if (kvm_read(kd, (u_long)(addr), p, s) != s) { \ 141 warnx("cannot read %s: %s", msg, kvm_geterr(kd)); \ 142 return (0); \ 143 } \ 144 } while (0) 145 146 #if 1 /* This is copied from vmstat/vmstat.c */ 147 /* 148 * Print single word. `ovflow' is number of characters didn't fit 149 * on the last word. `fmt' is a format string to print this word. 150 * It must contain asterisk for field width. `width' is a width 151 * occupied by this word. `fixed' is a number of constant chars in 152 * `fmt'. `val' is a value to be printed using format string `fmt'. 153 */ 154 #define PRWORD(ovflw, fmt, width, fixed, val) do { \ 155 (ovflw) += printf((fmt), \ 156 (width) - (fixed) - (ovflw) > 0 ? \ 157 (width) - (fixed) - (ovflw) : 0, \ 158 (val)) - (width); \ 159 if ((ovflw) < 0) \ 160 (ovflw) = 0; \ 161 } while (0) 162 #endif 163 164 void filemode(void); 165 int getfiles(char **, int *, char **); 166 int getflags(const struct flagbit_desc *, char *, u_int); 167 struct mount * 168 getmnt(struct mount *); 169 char * kinfo_vnodes(int *); 170 void layer_header(void); 171 int layer_print(struct vnode *, int); 172 char * loadvnodes(int *); 173 void mount_print(struct mount *); 174 void nfs_header(void); 175 int nfs_print(struct vnode *, int); 176 void ttymode(void); 177 void ttyprt(struct tty *); 178 void ufs_header(void); 179 int ufs_print(struct vnode *, int); 180 int ext2fs_print(struct vnode *, int); 181 __dead void usage(void); 182 void vnode_header(void); 183 int vnode_print(struct vnode *, struct vnode *); 184 void vnodemode(void); 185 186 int 187 main(int argc, char *argv[]) 188 { 189 int ch, i, quit, ret, use_sysctl; 190 int fileflag, swapflag, ttyflag, vnodeflag; 191 gid_t egid = getegid(); 192 char buf[_POSIX2_LINE_MAX]; 193 194 setegid(getgid()); 195 fileflag = swapflag = ttyflag = vnodeflag = 0; 196 while ((ch = getopt(argc, argv, "TM:N:fghikmnstv")) != -1) 197 switch (ch) { 198 case 'f': 199 fileflag = 1; 200 break; 201 case 'M': 202 memf = optarg; 203 break; 204 case 'N': 205 nlistf = optarg; 206 break; 207 case 'n': 208 usenumflag = 1; 209 break; 210 case 's': 211 swapflag = 1; 212 break; 213 case 'T': 214 totalflag = 1; 215 break; 216 case 't': 217 ttyflag = 1; 218 break; 219 case 'k': 220 kflag = 1; 221 break; 222 case 'g': 223 kflag = 3; /* 1k ^ 3 */ 224 break; 225 case 'h': 226 hflag = 1; 227 break; 228 case 'm': 229 kflag = 2; /* 1k ^ 2 */ 230 break; 231 case 'v': 232 case 'i': /* Backward compatibility. */ 233 vnodeflag = 1; 234 break; 235 default: 236 usage(); 237 } 238 argc -= optind; 239 argv += optind; 240 241 /* 242 * Discard setgid privileges. If not the running kernel, we toss 243 * them away totally so that bad guys can't print interesting stuff 244 * from kernel memory, otherwise switch back to kmem for the 245 * duration of the kvm_openfiles() call. 246 */ 247 if (nlistf != NULL || memf != NULL) 248 (void)setgid(getgid()); 249 else 250 (void)setegid(egid); 251 252 use_sysctl = (nlistf == NULL && memf == NULL); 253 254 if ((kd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, buf)) == 0) 255 errx(1, "kvm_openfiles: %s", buf); 256 257 /* get rid of it now anyway */ 258 if (nlistf == NULL && memf == NULL) 259 (void)setgid(getgid()); 260 if ((ret = kvm_nlist(kd, nl)) != 0) { 261 if (ret == -1) 262 errx(1, "kvm_nlist: %s", kvm_geterr(kd)); 263 for (i = quit = 0; i <= NLMANDATORY; i++) 264 if (!nl[i].n_value) { 265 quit = 1; 266 warnx("undefined symbol: %s", nl[i].n_name); 267 } 268 if (quit) 269 exit(1); 270 } 271 if (!(fileflag | vnodeflag | ttyflag | swapflag | totalflag)) 272 usage(); 273 if (fileflag || totalflag) 274 filemode(); 275 if (vnodeflag || totalflag) 276 vnodemode(); 277 if (ttyflag) 278 ttymode(); 279 if (swapflag || totalflag) 280 if (use_sysctl) 281 list_swap(0, kflag, 0, totalflag, 1, hflag); 282 exit(0); 283 } 284 285 #define VPTRSZ sizeof(struct vnode *) 286 #define VNODESZ sizeof(struct vnode) 287 #define PTRSTRWIDTH ((int)sizeof(void *) * 2) /* Width of resulting string 288 when pointer is printed 289 in hexadecimal. */ 290 291 static void 292 devprintf(char *buf, size_t buflen, dev_t dev) 293 { 294 (void)snprintf(buf, buflen, "%llu,%llu", 295 (unsigned long long)major(dev), 296 (unsigned long long)minor(dev)); 297 } 298 299 void 300 vnodemode(void) 301 { 302 char *e_vnodebase, *endvnode, *evp; 303 struct vnode *vp; 304 struct mount *maddr, *mp; 305 int numvnodes, ovflw; 306 int (*vnode_fsprint) (struct vnode *, int); /* per-fs data printer */ 307 308 mp = NULL; 309 e_vnodebase = loadvnodes(&numvnodes); 310 if (totalflag) { 311 (void)printf("%7d vnodes\n", numvnodes); 312 goto out; 313 } 314 endvnode = e_vnodebase + numvnodes * (VPTRSZ + VNODESZ); 315 (void)printf("%d active vnodes\n", numvnodes); 316 317 #define ST mp->mnt_stat 318 #define FSTYPE_IS(mp, name) \ 319 (strncmp((mp)->mnt_stat.f_fstypename, (name), \ 320 sizeof((mp)->mnt_stat.f_fstypename)) == 0) 321 maddr = NULL; 322 vnode_fsprint = NULL; 323 for (evp = e_vnodebase; evp < endvnode; evp += VPTRSZ + VNODESZ) { 324 vp = (struct vnode *)(evp + VPTRSZ); 325 if (vp->v_mount != maddr) { 326 /* 327 * New filesystem 328 */ 329 if ((mp = getmnt(vp->v_mount)) == NULL) 330 continue; 331 maddr = vp->v_mount; 332 mount_print(mp); 333 vnode_header(); 334 /* 335 * XXX do this in a more fs-independent way 336 */ 337 if (FSTYPE_IS(mp, MOUNT_FFS) || 338 FSTYPE_IS(mp, MOUNT_MFS)) { 339 ufs_header(); 340 vnode_fsprint = ufs_print; 341 } else if (FSTYPE_IS(mp, MOUNT_NFS)) { 342 nfs_header(); 343 vnode_fsprint = nfs_print; 344 } else if (FSTYPE_IS(mp, MOUNT_EXT2FS)) { 345 ufs_header(); 346 vnode_fsprint = ext2fs_print; 347 } else if (FSTYPE_IS(mp, MOUNT_NULL) || 348 FSTYPE_IS(mp, MOUNT_OVERLAY) || 349 FSTYPE_IS(mp, MOUNT_UMAP)) { 350 layer_header(); 351 vnode_fsprint = layer_print; 352 } else 353 vnode_fsprint = NULL; 354 (void)printf("\n"); 355 } 356 ovflw = vnode_print(*(struct vnode **)evp, vp); 357 if (VTOI(vp) != NULL && vnode_fsprint != NULL) 358 (*vnode_fsprint)(vp, ovflw); 359 (void)printf("\n"); 360 } 361 362 out: 363 if (e_vnodebase) 364 free(e_vnodebase); 365 } 366 367 int 368 getflags(const struct flagbit_desc *fd, char *p, u_int flags) 369 { 370 char *q = p; 371 372 if (flags == 0) { 373 *p++ = '-'; 374 *p = '\0'; 375 return (0); 376 } 377 378 for (; fd->fd_flags != 0; fd++) 379 if ((flags & fd->fd_flags) != 0) 380 *p++ = fd->fd_mark; 381 *p = '\0'; 382 return (p - q); 383 } 384 385 const struct flagbit_desc vnode_flags[] = { 386 { VV_ROOT, 'R' }, 387 { VI_TEXT, 'T' }, 388 { VV_SYSTEM, 'S' }, 389 { VV_ISTTY, 'I' }, 390 { VI_EXECMAP, 'E' }, 391 { VU_DIROP, 'D' }, 392 { VI_ONWORKLST, 'O' }, 393 { VV_MPSAFE, 'M' }, 394 { 0, '\0' }, 395 }; 396 397 void 398 vnode_header(void) 399 { 400 401 (void)printf("%-*s TYP VFLAG USE HOLD TAG NPAGE", 402 PTRSTRWIDTH, "ADDR"); 403 } 404 405 int 406 vnode_print(struct vnode *avnode, struct vnode *vp) 407 { 408 const char *type; 409 char flags[sizeof(vnode_flags) / sizeof(vnode_flags[0])]; 410 int ovflw; 411 412 /* 413 * set type 414 */ 415 switch (vp->v_type) { 416 case VNON: 417 type = "non"; break; 418 case VREG: 419 type = "reg"; break; 420 case VDIR: 421 type = "dir"; break; 422 case VBLK: 423 type = "blk"; break; 424 case VCHR: 425 type = "chr"; break; 426 case VLNK: 427 type = "lnk"; break; 428 case VSOCK: 429 type = "soc"; break; 430 case VFIFO: 431 type = "fif"; break; 432 case VBAD: 433 type = "bad"; break; 434 default: 435 type = "unk"; break; 436 } 437 /* 438 * gather flags 439 */ 440 (void)getflags(vnode_flags, flags, 441 vp->v_uflag | vp->v_iflag | vp->v_vflag); 442 443 ovflw = 0; 444 PRWORD(ovflw, "%*lx", PTRSTRWIDTH, 0, (long)avnode); 445 PRWORD(ovflw, " %*s", 4, 1, type); 446 PRWORD(ovflw, " %*s", 6, 1, flags); 447 #define VUSECOUNT_MASK 0x3fffffff /* XXX: kernel private */ 448 PRWORD(ovflw, " %*d", 5, 1, vp->v_usecount & VUSECOUNT_MASK); 449 PRWORD(ovflw, " %*d", 5, 1, vp->v_holdcnt); 450 PRWORD(ovflw, " %*d", 4, 1, vp->v_tag); 451 PRWORD(ovflw, " %*d", 6, 1, vp->v_uobj.uo_npages); 452 return (ovflw); 453 } 454 455 const struct flagbit_desc ufs_flags[] = { 456 { IN_ACCESS, 'A' }, 457 { IN_CHANGE, 'C' }, 458 { IN_UPDATE, 'U' }, 459 { IN_MODIFIED, 'M' }, 460 { IN_ACCESSED, 'a' }, 461 { IN_SHLOCK, 'S' }, 462 { IN_EXLOCK, 'E' }, 463 { IN_SPACECOUNTED, 's' }, 464 { 0, '\0' }, 465 }; 466 467 void 468 ufs_header(void) 469 { 470 471 (void)printf(" FILEID IFLAG RDEV|SZ"); 472 } 473 474 int 475 ufs_print(struct vnode *vp, int ovflw) 476 { 477 struct inode inode, *ip = &inode; 478 union dinode { 479 struct ufs1_dinode dp1; 480 struct ufs2_dinode dp2; 481 } dip; 482 struct ufsmount ump; 483 char flags[sizeof(ufs_flags) / sizeof(ufs_flags[0])]; 484 char dev[4 + 1 + 7 + 1]; /* 12bit major + 20bit minor */ 485 char *name; 486 mode_t type; 487 dev_t rdev; 488 489 KGETRET(VTOI(vp), &inode, sizeof(struct inode), "vnode's inode"); 490 KGETRET(ip->i_ump, &ump, sizeof(struct ufsmount), 491 "vnode's mount point"); 492 493 if (ump.um_fstype == UFS1) { 494 KGETRET(ip->i_din.ffs1_din, &dip, sizeof (struct ufs1_dinode), 495 "inode's dinode"); 496 rdev = (uint32_t)dip.dp1.di_rdev; 497 } else { 498 KGETRET(ip->i_din.ffs2_din, &dip, sizeof (struct ufs2_dinode), 499 "inode's UFS2 dinode"); 500 rdev = dip.dp2.di_rdev; 501 } 502 503 /* 504 * XXX need to to locking state. 505 */ 506 507 (void)getflags(ufs_flags, flags, ip->i_flag); 508 PRWORD(ovflw, " %*llu", 7, 1, (unsigned long long)ip->i_number); 509 PRWORD(ovflw, " %*s", 6, 1, flags); 510 type = ip->i_mode & S_IFMT; 511 if (S_ISCHR(ip->i_mode) || S_ISBLK(ip->i_mode)) { 512 if (usenumflag || 513 (name = devname(rdev, type)) == NULL) { 514 devprintf(dev, sizeof(dev), rdev); 515 name = dev; 516 } 517 PRWORD(ovflw, " %*s", 8, 1, name); 518 } else 519 PRWORD(ovflw, " %*lld", 8, 1, (long long)ip->i_size); 520 return 0; 521 } 522 523 int 524 ext2fs_print(struct vnode *vp, int ovflw) 525 { 526 struct inode inode, *ip = &inode; 527 struct ext2fs_dinode dip; 528 char flags[sizeof(ufs_flags) / sizeof(ufs_flags[0])]; 529 char dev[4 + 1 + 7 + 1]; /* 12bit major + 20bit minor */ 530 char *name; 531 mode_t type; 532 533 KGETRET(VTOI(vp), &inode, sizeof(struct inode), "vnode's inode"); 534 KGETRET(ip->i_din.e2fs_din, &dip, sizeof (struct ext2fs_dinode), 535 "inode's dinode"); 536 537 /* 538 * XXX need to to locking state. 539 */ 540 541 (void)getflags(ufs_flags, flags, ip->i_flag); 542 PRWORD(ovflw, " %*llu", 7, 1, (unsigned long long)ip->i_number); 543 PRWORD(ovflw, " %*s", 6, 1, flags); 544 type = dip.e2di_mode & S_IFMT; 545 if (S_ISCHR(dip.e2di_mode) || S_ISBLK(dip.e2di_mode)) { 546 if (usenumflag || 547 (name = devname(dip.e2di_rdev, type)) == NULL) { 548 devprintf(dev, sizeof(dev), dip.e2di_rdev); 549 name = dev; 550 } 551 PRWORD(ovflw, " %*s", 8, 1, name); 552 } else 553 PRWORD(ovflw, " %*u", 8, 1, (u_int)dip.e2di_size); 554 return (0); 555 } 556 557 const struct flagbit_desc nfs_flags[] = { 558 { NFLUSHWANT, 'W' }, 559 { NFLUSHINPROG, 'P' }, 560 { NMODIFIED, 'M' }, 561 { NWRITEERR, 'E' }, 562 { NACC, 'A' }, 563 { NUPD, 'U' }, 564 { NCHG, 'C' }, 565 { 0, '\0' }, 566 }; 567 568 void 569 nfs_header(void) 570 { 571 572 (void)printf(" FILEID NFLAG RDEV|SZ"); 573 } 574 575 int 576 nfs_print(struct vnode *vp, int ovflw) 577 { 578 struct nfsnode nfsnode, *np = &nfsnode; 579 char flags[sizeof(nfs_flags) / sizeof(nfs_flags[0])]; 580 char dev[4 + 1 + 7 + 1]; /* 12bit major + 20bit minor */ 581 struct vattr va; 582 char *name; 583 mode_t type; 584 585 KGETRET(VTONFS(vp), &nfsnode, sizeof(nfsnode), "vnode's nfsnode"); 586 (void)getflags(nfs_flags, flags, np->n_flag); 587 588 KGETRET(np->n_vattr, &va, sizeof(va), "vnode attr"); 589 PRWORD(ovflw, " %*ld", 7, 1, (long)va.va_fileid); 590 PRWORD(ovflw, " %*s", 6, 1, flags); 591 switch (va.va_type) { 592 case VCHR: 593 type = S_IFCHR; 594 goto device; 595 596 case VBLK: 597 type = S_IFBLK; 598 device: 599 if (usenumflag || (name = devname(va.va_rdev, type)) == NULL) { 600 devprintf(dev, sizeof(dev), va.va_rdev); 601 name = dev; 602 } 603 PRWORD(ovflw, " %*s", 8, 1, name); 604 break; 605 default: 606 PRWORD(ovflw, " %*lld", 8, 1, (long long)np->n_size); 607 break; 608 } 609 return (0); 610 } 611 612 void 613 layer_header(void) 614 { 615 616 (void)printf(" %*s", PTRSTRWIDTH, "LOWER"); 617 } 618 619 int 620 layer_print(struct vnode *vp, int ovflw) 621 { 622 struct layer_node lnode, *lp = &lnode; 623 624 KGETRET(VTOLAYER(vp), &lnode, sizeof(lnode), "layer vnode"); 625 626 PRWORD(ovflw, " %*lx", PTRSTRWIDTH + 1, 1, (long)lp->layer_lowervp); 627 return (0); 628 } 629 630 /* 631 * Given a pointer to a mount structure in kernel space, 632 * read it in and return a usable pointer to it. 633 */ 634 struct mount * 635 getmnt(struct mount *maddr) 636 { 637 static struct mtab { 638 struct mtab *next; 639 struct mount *maddr; 640 struct mount mount; 641 } *mhead = NULL; 642 struct mtab *mt; 643 struct mount mb; 644 645 for (mt = mhead; mt != NULL; mt = mt->next) 646 if (maddr == mt->maddr) 647 return (&mt->mount); 648 KGETRET(maddr, &mb, sizeof(struct mount), "mount table"); 649 if ((mt = malloc(sizeof(struct mtab))) == NULL) 650 err(1, "malloc"); 651 mt->mount = mb; 652 mt->maddr = maddr; 653 mt->next = mhead; 654 mhead = mt; 655 return (&mt->mount); 656 } 657 658 void 659 mount_print(struct mount *mp) 660 { 661 int flags; 662 663 (void)printf("*** MOUNT %s %s on %s", ST.f_fstypename, 664 ST.f_mntfromname, ST.f_mntonname); 665 if ((flags = mp->mnt_flag) != 0) { 666 size_t i; 667 const char *sep = " ("; 668 669 for (i = 0; i < sizeof mnt_flags / sizeof mnt_flags[0]; i++) { 670 if (flags & mnt_flags[i].m_flag) { 671 (void)printf("%s%s", sep, mnt_flags[i].m_name); 672 flags &= ~mnt_flags[i].m_flag; 673 sep = ","; 674 } 675 } 676 if (flags) 677 (void)printf("%sunknown_flags:%x", sep, flags); 678 (void)printf(")"); 679 } 680 (void)printf("\n"); 681 } 682 683 char * 684 loadvnodes(int *avnodes) 685 { 686 int mib[2]; 687 int status; 688 size_t copysize; 689 #if 0 690 size_t oldsize; 691 #endif 692 char *vnodebase; 693 694 if (totalflag) { 695 KGET(V_NUMV, *avnodes); 696 return NULL; 697 } 698 if (memf != NULL) { 699 /* 700 * do it by hand 701 */ 702 return (kinfo_vnodes(avnodes)); 703 } 704 mib[0] = CTL_KERN; 705 mib[1] = KERN_VNODE; 706 /* 707 * First sysctl call gets the necessary buffer size; second 708 * sysctl call gets the data. We allow for some growth in the 709 * data size between the two sysctl calls (increases of a few 710 * thousand vnodes in between the two calls have been observed). 711 * We ignore ENOMEM from the second sysctl call, which can 712 * happen if the kernel's data grew by even more than we allowed 713 * for. 714 */ 715 if (sysctl(mib, 2, NULL, ©size, NULL, 0) == -1) 716 err(1, "sysctl: KERN_VNODE"); 717 #if 0 718 oldsize = copysize; 719 #endif 720 copysize += 100 * sizeof(struct vnode) + copysize / 20; 721 if ((vnodebase = malloc(copysize)) == NULL) 722 err(1, "malloc"); 723 status = sysctl(mib, 2, vnodebase, ©size, NULL, 0); 724 if (status == -1 && errno != ENOMEM) 725 err(1, "sysctl: KERN_VNODE"); 726 #if 0 /* for debugging the amount of growth allowed for */ 727 if (copysize != oldsize) { 728 warnx("count changed from %ld to %ld (%+ld)%s", 729 (long)(oldsize / sizeof(struct vnode)), 730 (long)(copysize / sizeof(struct vnode)), 731 (long)(copysize / sizeof(struct vnode)) - 732 (long)(oldsize / sizeof(struct vnode)), 733 (status == 0 ? "" : ", and errno = ENOMEM")); 734 } 735 #endif 736 if (copysize % (VPTRSZ + VNODESZ)) 737 errx(1, "vnode size mismatch"); 738 *avnodes = copysize / (VPTRSZ + VNODESZ); 739 740 return (vnodebase); 741 } 742 743 /* 744 * simulate what a running kernel does in in kinfo_vnode 745 */ 746 static int 747 vnode_cmp(const void *p1, const void *p2) 748 { 749 const char *s1 = (const char *)p1; 750 const char *s2 = (const char *)p2; 751 const struct vnode *v1 = (const struct vnode *)(s1 + VPTRSZ); 752 const struct vnode *v2 = (const struct vnode *)(s2 + VPTRSZ); 753 754 return (v2->v_mount - v1->v_mount); 755 } 756 757 char * 758 kinfo_vnodes(int *avnodes) 759 { 760 int i; 761 char *beg, *bp, *ep; 762 int numvnodes, next_offset; 763 764 KGET(V_NUMV, numvnodes); 765 if ((bp = malloc((numvnodes + 20) * (VPTRSZ + VNODESZ))) == NULL) 766 err(1, "malloc"); 767 beg = bp; 768 ep = bp + (numvnodes + 20) * (VPTRSZ + VNODESZ); 769 KGET(V_NEXT_OFFSET, next_offset); 770 771 for (i = 0; i < 3; i++) { 772 TAILQ_HEAD(vnodelst, vnode) lru_head; 773 struct vnode *vp, vnode; 774 775 KGET2((nl[V_LRU_LIST].n_value + sizeof(lru_head) * i), &lru_head, 776 sizeof(lru_head), "lru_list"); 777 vp = TAILQ_FIRST(&lru_head); 778 while (vp != NULL) { 779 KGET2(vp, &vnode, sizeof(vnode), "vnode"); 780 if (bp + VPTRSZ + VNODESZ > ep) 781 /* XXX - should realloc */ 782 errx(1, "no more room for vnodes"); 783 memmove(bp, &vp, VPTRSZ); 784 bp += VPTRSZ; 785 memmove(bp, &vnode, VNODESZ); 786 bp += VNODESZ; 787 KGET2((char *)vp + next_offset, &vp, sizeof(vp), "nvp"); 788 } 789 } 790 *avnodes = (bp - beg) / (VPTRSZ + VNODESZ); 791 /* Sort by mount like we get it from sysctl. */ 792 qsort(beg, *avnodes, VPTRSZ + VNODESZ, vnode_cmp); 793 return (beg); 794 } 795 796 void 797 ttymode(void) 798 { 799 int ntty; 800 struct ttylist_head tty_head; 801 struct tty *tp, tty; 802 803 KGET(TTY_NTTY, ntty); 804 (void)printf("%d terminal device%s\n", ntty, ntty == 1 ? "" : "s"); 805 KGET(TTY_TTYLIST, tty_head); 806 (void)printf( 807 " LINE RAW CAN OUT HWT LWT COL STATE %-*s PGID DISC\n", 808 PTRSTRWIDTH, "SESS"); 809 for (tp = tty_head.tqh_first; tp; tp = tty.tty_link.tqe_next) { 810 KGET2(tp, &tty, sizeof tty, "tty struct"); 811 ttyprt(&tty); 812 } 813 } 814 815 static const struct flagbit_desc ttystates[] = { 816 { TS_ISOPEN, 'O'}, 817 { TS_DIALOUT, '>'}, 818 { TS_CARR_ON, 'C'}, 819 { TS_TIMEOUT, 'T'}, 820 { TS_FLUSH, 'F'}, 821 { TS_BUSY, 'B'}, 822 { TS_XCLUDE, 'X'}, 823 { TS_TTSTOP, 'S'}, 824 { TS_TBLOCK, 'K'}, 825 { TS_ASYNC, 'Y'}, 826 { TS_BKSL, 'D'}, 827 { TS_ERASE, 'E'}, 828 { TS_LNCH, 'L'}, 829 { TS_TYPEN, 'P'}, 830 { TS_CNTTB, 'N'}, 831 { 0, '\0'}, 832 }; 833 834 void 835 ttyprt(struct tty *tp) 836 { 837 char state[sizeof(ttystates) / sizeof(ttystates[0]) + 1]; 838 char dev[4 + 1 + 7 + 1]; /* 12bit major + 20bit minor */ 839 struct linesw t_linesw; 840 const char *name; 841 char buffer; 842 pid_t pgid; 843 int n, ovflw; 844 845 if (usenumflag || (name = devname(tp->t_dev, S_IFCHR)) == NULL) { 846 devprintf(dev, sizeof(dev), tp->t_dev); 847 name = dev; 848 } 849 ovflw = 0; 850 PRWORD(ovflw, "%-*s", 7, 0, name); 851 PRWORD(ovflw, " %*d", 3, 1, tp->t_rawq.c_cc); 852 PRWORD(ovflw, " %*d", 4, 1, tp->t_canq.c_cc); 853 PRWORD(ovflw, " %*d", 4, 1, tp->t_outq.c_cc); 854 PRWORD(ovflw, " %*d", 5, 1, tp->t_hiwat); 855 PRWORD(ovflw, " %*d", 4, 1, tp->t_lowat); 856 PRWORD(ovflw, " %*d", 8, 1, tp->t_column); 857 n = getflags(ttystates, state, tp->t_state); 858 if (tp->t_wopen) { 859 state[n++] = 'W'; 860 state[n] = '\0'; 861 } 862 PRWORD(ovflw, " %-*s", 7, 1, state); 863 PRWORD(ovflw, " %*lX", PTRSTRWIDTH + 1, 1, (u_long)tp->t_session); 864 pgid = 0; 865 if (tp->t_pgrp != NULL) 866 KGET2(&tp->t_pgrp->pg_id, &pgid, sizeof(pid_t), "pgid"); 867 PRWORD(ovflw, " %*d", 6, 1, pgid); 868 KGET2(tp->t_linesw, &t_linesw, sizeof(t_linesw), 869 "line discipline switch table"); 870 name = t_linesw.l_name; 871 (void)putchar(' '); 872 for (;;) { 873 KGET2(name, &buffer, sizeof(buffer), "line discipline name"); 874 if (buffer == '\0') 875 break; 876 (void)putchar(buffer); 877 name++; 878 } 879 (void)putchar('\n'); 880 } 881 882 static const struct flagbit_desc filemode_flags[] = { 883 { FREAD, 'R' }, 884 { FWRITE, 'W' }, 885 { FAPPEND, 'A' }, 886 #ifdef FSHLOCK /* currently gone */ 887 { FSHLOCK, 'S' }, 888 { FEXLOCK, 'X' }, 889 #endif 890 { FASYNC, 'I' }, 891 { 0, '\0' }, 892 }; 893 894 void 895 filemode(void) 896 { 897 struct kinfo_file *ki; 898 char flags[sizeof(filemode_flags) / sizeof(filemode_flags[0])]; 899 char *buf, *offset; 900 int len, maxfile, nfile, ovflw; 901 902 KGET(FNL_MAXFILE, maxfile); 903 if (totalflag) { 904 KGET(FNL_NFILE, nfile); 905 (void)printf("%3d/%3d files\n", nfile, maxfile); 906 return; 907 } 908 if (getfiles(&buf, &len, &offset) == -1) 909 return; 910 /* 911 * Getfiles returns in malloc'd memory to an array of kinfo_file2 912 * structures. 913 */ 914 nfile = len / sizeof(struct kinfo_file); 915 916 (void)printf("%d/%d open files\n", nfile, maxfile); 917 (void)printf("%*s%s%*s TYPE FLG CNT MSG %*s%s%*s IFLG OFFSET\n", 918 (PTRSTRWIDTH - 4) / 2, "", " LOC", (PTRSTRWIDTH - 4) / 2, "", 919 (PTRSTRWIDTH - 4) / 2, "", "DATA", (PTRSTRWIDTH - 4) / 2, ""); 920 for (ki = (struct kinfo_file *)offset; nfile--; ki++) { 921 if ((unsigned)ki->ki_ftype >= sizeof(dtypes) / sizeof(dtypes[0])) 922 continue; 923 ovflw = 0; 924 (void)getflags(filemode_flags, flags, ki->ki_flag); 925 PRWORD(ovflw, "%*lx", PTRSTRWIDTH, 0, (long)ki->ki_fileaddr); 926 PRWORD(ovflw, " %-*s", 9, 1, dtypes[ki->ki_ftype]); 927 PRWORD(ovflw, " %*s", 6, 1, flags); 928 PRWORD(ovflw, " %*d", 5, 1, ki->ki_count); 929 PRWORD(ovflw, " %*d", 5, 1, ki->ki_msgcount); 930 PRWORD(ovflw, " %*lx", PTRSTRWIDTH + 1, 2, (long)ki->ki_fdata); 931 PRWORD(ovflw, " %*x", 5, 1, 0); 932 if ((off_t)ki->ki_foffset < 0) 933 PRWORD(ovflw, " %-*lld\n", PTRSTRWIDTH + 1, 2, 934 (long long)ki->ki_foffset); 935 else 936 PRWORD(ovflw, " %-*lld\n", PTRSTRWIDTH + 1, 2, 937 (long long)ki->ki_foffset); 938 } 939 free(buf); 940 } 941 942 int 943 getfiles(char **abuf, int *alen, char **aoffset) 944 { 945 size_t len; 946 int mib[6]; 947 char *buf; 948 size_t offset; 949 950 /* 951 * XXX 952 * Add emulation of KINFO_FILE here. 953 */ 954 if (memf != NULL) 955 errx(1, "files on dead kernel, not implemented"); 956 957 mib[0] = CTL_KERN; 958 mib[1] = KERN_FILE2; 959 mib[2] = KERN_FILE_BYFILE; 960 mib[3] = 0; 961 mib[4] = sizeof(struct kinfo_file); 962 mib[5] = 0; 963 if (sysctl(mib, 6, NULL, &len, NULL, 0) == -1) { 964 warn("sysctl: KERN_FILE2"); 965 return (-1); 966 } 967 /* We need to align (struct kinfo_file *) in the buffer. */ 968 offset = len % sizeof(off_t); 969 mib[5] = len / sizeof(struct kinfo_file); 970 if ((buf = malloc(len + offset)) == NULL) 971 err(1, "malloc"); 972 if (sysctl(mib, 6, buf + offset, &len, NULL, 0) == -1) { 973 warn("sysctl: 2nd KERN_FILE2"); 974 free(buf); 975 return (-1); 976 } 977 *abuf = buf; 978 *alen = len; 979 *aoffset = (buf + offset); 980 return (0); 981 } 982 983 void 984 usage(void) 985 { 986 987 (void)fprintf(stderr, 988 "usage: %s [-T|-f|-s|-t|-v] [-ghkmn] [-M core] [-N system]\n", 989 getprogname()); 990 exit(1); 991 } 992
Indexes created Sat Sep 20 22:09:52 GMT 2025