pstat.c revision 1.107
1 /* $NetBSD: pstat.c,v 1.107 2008/02/11 15:22:43 ad 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\n\ 35 The Regents of the University of California. All rights reserved.\n"); 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 1.107 2008/02/11 15:22:43 ad Exp $"); 43 #endif 44 #endif /* not lint */ 45 46 #include <sys/param.h> 47 #include <sys/time.h> 48 #include <sys/vnode.h> 49 #include <sys/ucred.h> 50 #include <stdbool.h> 51 #define _KERNEL 52 #include <sys/file.h> 53 #include <ufs/ufs/inode.h> 54 #define NFS 55 #include <sys/mount.h> 56 #undef NFS 57 #include <sys/uio.h> 58 #include <miscfs/genfs/layer.h> 59 #undef _KERNEL 60 #include <sys/stat.h> 61 #include <nfs/nfsproto.h> 62 #include <nfs/rpcv2.h> 63 #include <nfs/nfs.h> 64 #include <nfs/nfsnode.h> 65 #include <sys/ioctl.h> 66 #include <sys/tty.h> 67 #include <sys/conf.h> 68 #include <sys/device.h> 69 70 #include <sys/sysctl.h> 71 72 #include <err.h> 73 #include <kvm.h> 74 #include <limits.h> 75 #include <nlist.h> 76 #include <stdio.h> 77 #include <stdlib.h> 78 #include <string.h> 79 #include <unistd.h> 80 81 #include "swapctl.h" 82 83 struct nlist nl[] = { 84 #define V_MOUNTLIST 0 85 { "_mountlist" }, /* address of head of mount list. */ 86 #define V_NUMV 1 87 { "_numvnodes" }, 88 #define FNL_NFILE 2 89 { "_nfiles" }, 90 #define FNL_MAXFILE 3 91 { "_maxfiles" }, 92 #define TTY_NTTY 4 93 { "_tty_count" }, 94 #define TTY_TTYLIST 5 95 { "_ttylist" }, 96 #define NLMANDATORY TTY_TTYLIST /* names up to here are mandatory */ 97 { "" } 98 }; 99 100 int usenumflag; 101 int totalflag; 102 int kflag; 103 int hflag; 104 char *nlistf = NULL; 105 char *memf = NULL; 106 kvm_t *kd; 107 108 static const char * const dtypes[] = { DTYPE_NAMES }; 109 110 111 static const struct { 112 u_int m_flag; 113 u_int m_visible; 114 const char *m_name; 115 } mnt_flags[] = { 116 __MNT_FLAGS 117 }; 118 119 struct flagbit_desc { 120 u_int fd_flags; 121 char fd_mark; 122 }; 123 124 #define SVAR(var) __STRING(var) /* to force expansion */ 125 #define KGET(idx, var) \ 126 KGET1(idx, &var, sizeof(var), SVAR(var)) 127 #define KGET1(idx, p, s, msg) \ 128 KGET2(nl[idx].n_value, p, s, msg) 129 #define KGET2(addr, p, s, msg) do { \ 130 if (kvm_read(kd, (u_long)(addr), p, s) != s) \ 131 warnx("cannot read %s: %s", msg, kvm_geterr(kd)); \ 132 } while (/* CONSTCOND */0) 133 #define KGETRET(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 return (0); \ 137 } \ 138 } while (/* CONSTCOND */0) 139 140 #if 1 /* This is copied from vmstat/vmstat.c */ 141 /* 142 * Print single word. `ovflow' is number of characters didn't fit 143 * on the last word. `fmt' is a format string to print this word. 144 * It must contain asterisk for field width. `width' is a width 145 * occupied by this word. `fixed' is a number of constant chars in 146 * `fmt'. `val' is a value to be printed using format string `fmt'. 147 */ 148 #define PRWORD(ovflw, fmt, width, fixed, val) do { \ 149 (ovflw) += printf((fmt), \ 150 (width) - (fixed) - (ovflw) > 0 ? \ 151 (width) - (fixed) - (ovflw) : 0, \ 152 (val)) - (width); \ 153 if ((ovflw) < 0) \ 154 (ovflw) = 0; \ 155 } while (/* CONSTCOND */0) 156 #endif 157 158 void filemode(void); 159 int getfiles(char **, int *, char **); 160 int getflags(const struct flagbit_desc *, char *, u_int); 161 struct mount * 162 getmnt(struct mount *); 163 char * kinfo_vnodes(int *); 164 void layer_header(void); 165 int layer_print(struct vnode *, int); 166 char * loadvnodes(int *); 167 int main(int, char **); 168 void mount_print(struct mount *); 169 void nfs_header(void); 170 int nfs_print(struct vnode *, int); 171 void ttymode(void); 172 void ttyprt(struct tty *); 173 void ufs_header(void); 174 int ufs_print(struct vnode *, int); 175 int ext2fs_print(struct vnode *, int); 176 void usage(void); 177 void vnode_header(void); 178 int vnode_print(struct vnode *, struct vnode *); 179 void vnodemode(void); 180 181 int 182 main(int argc, char *argv[]) 183 { 184 int ch, i, quit, ret, use_sysctl; 185 int fileflag, swapflag, ttyflag, vnodeflag; 186 gid_t egid = getegid(); 187 char buf[_POSIX2_LINE_MAX]; 188 189 setegid(getgid()); 190 fileflag = swapflag = ttyflag = vnodeflag = 0; 191 while ((ch = getopt(argc, argv, "TM:N:fghikmnstv")) != -1) 192 switch (ch) { 193 case 'f': 194 fileflag = 1; 195 break; 196 case 'M': 197 memf = optarg; 198 break; 199 case 'N': 200 nlistf = optarg; 201 break; 202 case 'n': 203 usenumflag = 1; 204 break; 205 case 's': 206 swapflag = 1; 207 break; 208 case 'T': 209 totalflag = 1; 210 break; 211 case 't': 212 ttyflag = 1; 213 break; 214 case 'k': 215 kflag = 1; 216 break; 217 case 'g': 218 kflag = 3; /* 1k ^ 3 */ 219 break; 220 case 'h': 221 hflag = 1; 222 break; 223 case 'm': 224 kflag = 2; /* 1k ^ 2 */ 225 break; 226 case 'v': 227 case 'i': /* Backward compatibility. */ 228 vnodeflag = 1; 229 break; 230 default: 231 usage(); 232 } 233 argc -= optind; 234 argv += optind; 235 236 /* 237 * Discard setgid privileges. If not the running kernel, we toss 238 * them away totally so that bad guys can't print interesting stuff 239 * from kernel memory, otherwise switch back to kmem for the 240 * duration of the kvm_openfiles() call. 241 */ 242 if (nlistf != NULL || memf != NULL) 243 (void)setgid(getgid()); 244 else 245 (void)setegid(egid); 246 247 use_sysctl = (nlistf == NULL && memf == NULL); 248 249 if ((kd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, buf)) == 0) 250 errx(1, "kvm_openfiles: %s", buf); 251 252 /* get rid of it now anyway */ 253 if (nlistf == NULL && memf == NULL) 254 (void)setgid(getgid()); 255 if ((ret = kvm_nlist(kd, nl)) != 0) { 256 if (ret == -1) 257 errx(1, "kvm_nlist: %s", kvm_geterr(kd)); 258 for (i = quit = 0; i <= NLMANDATORY; i++) 259 if (!nl[i].n_value) { 260 quit = 1; 261 warnx("undefined symbol: %s", nl[i].n_name); 262 } 263 if (quit) 264 exit(1); 265 } 266 if (!(fileflag | vnodeflag | ttyflag | swapflag | totalflag)) 267 usage(); 268 if (fileflag || totalflag) 269 filemode(); 270 if (vnodeflag || totalflag) 271 vnodemode(); 272 if (ttyflag) 273 ttymode(); 274 if (swapflag || totalflag) 275 if (use_sysctl) 276 list_swap(0, kflag, 0, totalflag, 1, hflag); 277 exit(0); 278 } 279 280 #define VPTRSZ sizeof(struct vnode *) 281 #define VNODESZ sizeof(struct vnode) 282 #define PTRSTRWIDTH ((int)sizeof(void *) * 2) /* Width of resulting string 283 when pointer is printed 284 in hexadecimal. */ 285 286 void 287 vnodemode(void) 288 { 289 char *e_vnodebase, *endvnode, *evp; 290 struct vnode *vp; 291 struct mount *maddr, *mp; 292 int numvnodes, ovflw; 293 int (*vnode_fsprint) (struct vnode *, int); /* per-fs data printer */ 294 295 mp = NULL; 296 e_vnodebase = loadvnodes(&numvnodes); 297 if (totalflag) { 298 (void)printf("%7d vnodes\n", numvnodes); 299 goto out; 300 } 301 endvnode = e_vnodebase + numvnodes * (VPTRSZ + VNODESZ); 302 (void)printf("%d active vnodes\n", numvnodes); 303 304 #define ST mp->mnt_stat 305 #define FSTYPE_IS(mp, name) \ 306 (strncmp((mp)->mnt_stat.f_fstypename, (name), \ 307 sizeof((mp)->mnt_stat.f_fstypename)) == 0) 308 maddr = NULL; 309 vnode_fsprint = NULL; 310 for (evp = e_vnodebase; evp < endvnode; evp += VPTRSZ + VNODESZ) { 311 vp = (struct vnode *)(evp + VPTRSZ); 312 if (vp->v_mount != maddr) { 313 /* 314 * New filesystem 315 */ 316 if ((mp = getmnt(vp->v_mount)) == NULL) 317 continue; 318 maddr = vp->v_mount; 319 mount_print(mp); 320 vnode_header(); 321 if (FSTYPE_IS(mp, MOUNT_FFS) || 322 FSTYPE_IS(mp, MOUNT_MFS)) { 323 ufs_header(); 324 vnode_fsprint = ufs_print; 325 } else if (FSTYPE_IS(mp, MOUNT_NFS)) { 326 nfs_header(); 327 vnode_fsprint = nfs_print; 328 } else if (FSTYPE_IS(mp, MOUNT_EXT2FS)) { 329 ufs_header(); 330 vnode_fsprint = ext2fs_print; 331 } else if (FSTYPE_IS(mp, MOUNT_NULL) || 332 FSTYPE_IS(mp, MOUNT_OVERLAY) || 333 FSTYPE_IS(mp, MOUNT_UMAP)) { 334 layer_header(); 335 vnode_fsprint = layer_print; 336 } else 337 vnode_fsprint = NULL; 338 (void)printf("\n"); 339 } 340 ovflw = vnode_print(*(struct vnode **)evp, vp); 341 if (VTOI(vp) != NULL && vnode_fsprint != NULL) 342 (*vnode_fsprint)(vp, ovflw); 343 (void)printf("\n"); 344 } 345 346 out: 347 if (e_vnodebase) 348 free(e_vnodebase); 349 } 350 351 int 352 getflags(const struct flagbit_desc *fd, char *p, u_int flags) 353 { 354 char *q = p; 355 356 if (flags == 0) { 357 *p++ = '-'; 358 *p = '\0'; 359 return (0); 360 } 361 362 for (; fd->fd_flags != 0; fd++) 363 if ((flags & fd->fd_flags) != 0) 364 *p++ = fd->fd_mark; 365 *p = '\0'; 366 return (p - q); 367 } 368 369 const struct flagbit_desc vnode_flags[] = { 370 { VV_ROOT, 'R' }, 371 { VI_TEXT, 'T' }, 372 { VV_SYSTEM, 'S' }, 373 { VV_ISTTY, 'I' }, 374 { VI_EXECMAP, 'E' }, 375 { VI_XLOCK, 'L' }, 376 { VU_DIROP, 'D' }, 377 { VI_LAYER, 'Y' }, 378 { VI_ONWORKLST, 'O' }, 379 { 0, '\0' }, 380 }; 381 382 void 383 vnode_header(void) 384 { 385 386 (void)printf("%-*s TYP VFLAG USE HOLD TAG NPAGE", 387 PTRSTRWIDTH, "ADDR"); 388 } 389 390 int 391 vnode_print(struct vnode *avnode, struct vnode *vp) 392 { 393 char *type, flags[sizeof(vnode_flags) / sizeof(vnode_flags[0])]; 394 int ovflw; 395 396 /* 397 * set type 398 */ 399 switch (vp->v_type) { 400 case VNON: 401 type = "non"; break; 402 case VREG: 403 type = "reg"; break; 404 case VDIR: 405 type = "dir"; break; 406 case VBLK: 407 type = "blk"; break; 408 case VCHR: 409 type = "chr"; break; 410 case VLNK: 411 type = "lnk"; break; 412 case VSOCK: 413 type = "soc"; break; 414 case VFIFO: 415 type = "fif"; break; 416 case VBAD: 417 type = "bad"; break; 418 default: 419 type = "unk"; break; 420 } 421 /* 422 * gather flags 423 */ 424 (void)getflags(vnode_flags, flags, 425 vp->v_uflag | vp->v_iflag | vp->v_vflag); 426 427 ovflw = 0; 428 PRWORD(ovflw, "%*lx", PTRSTRWIDTH, 0, (long)avnode); 429 PRWORD(ovflw, " %*s", 4, 1, type); 430 PRWORD(ovflw, " %*s", 6, 1, flags); 431 PRWORD(ovflw, " %*ld", 5, 1, (long)vp->v_usecount); 432 PRWORD(ovflw, " %*ld", 5, 1, (long)vp->v_holdcnt); 433 PRWORD(ovflw, " %*d", 4, 1, vp->v_tag); 434 PRWORD(ovflw, " %*d", 6, 1, vp->v_uobj.uo_npages); 435 return (ovflw); 436 } 437 438 const struct flagbit_desc ufs_flags[] = { 439 { IN_ACCESS, 'A' }, 440 { IN_CHANGE, 'C' }, 441 { IN_UPDATE, 'U' }, 442 { IN_MODIFIED, 'M' }, 443 { IN_ACCESSED, 'a' }, 444 { IN_RENAME, 'R' }, 445 { IN_SHLOCK, 'S' }, 446 { IN_EXLOCK, 'E' }, 447 { IN_CLEANING, 'c' }, 448 { IN_ADIROP, 'D' }, 449 { IN_SPACECOUNTED, 's' }, 450 { 0, '\0' }, 451 }; 452 453 void 454 ufs_header(void) 455 { 456 457 (void)printf(" FILEID IFLAG RDEV|SZ"); 458 } 459 460 int 461 ufs_print(struct vnode *vp, int ovflw) 462 { 463 struct inode inode, *ip = &inode; 464 union dinode { 465 struct ufs1_dinode dp1; 466 struct ufs2_dinode dp2; 467 } dip; 468 char flags[sizeof(ufs_flags) / sizeof(ufs_flags[0])]; 469 char dev[4 + 1 + 7 + 1]; /* 12bit marjor + 20bit minor */ 470 char *name; 471 mode_t type; 472 dev_t rdev; 473 474 KGETRET(VTOI(vp), &inode, sizeof(struct inode), "vnode's inode"); 475 KGETRET(ip->i_din.ffs1_din, &dip, sizeof (struct ufs1_dinode), 476 "inode's dinode"); 477 478 if (ip->i_size == dip.dp1.di_size) 479 rdev = dip.dp1.di_rdev; 480 else { 481 KGETRET(ip->i_din.ffs1_din, &dip, sizeof (struct ufs2_dinode), 482 "inode's UFS2 dinode"); 483 rdev = dip.dp2.di_rdev; 484 } 485 486 /* 487 * XXX need to to locking state. 488 */ 489 490 (void)getflags(ufs_flags, flags, ip->i_flag); 491 PRWORD(ovflw, " %*llu", 7, 1, (unsigned long long)ip->i_number); 492 PRWORD(ovflw, " %*s", 6, 1, flags); 493 type = ip->i_mode & S_IFMT; 494 if (S_ISCHR(ip->i_mode) || S_ISBLK(ip->i_mode)) { 495 if (usenumflag || 496 (name = devname(rdev, type)) == NULL) { 497 snprintf(dev, sizeof(dev), "%d,%d", 498 major(rdev), minor(rdev)); 499 name = dev; 500 } 501 PRWORD(ovflw, " %*s", 8, 1, name); 502 } else 503 PRWORD(ovflw, " %*lld", 8, 1, (long long)ip->i_size); 504 return 0; 505 } 506 507 int 508 ext2fs_print(struct vnode *vp, int ovflw) 509 { 510 struct inode inode, *ip = &inode; 511 struct ext2fs_dinode dip; 512 char flags[sizeof(ufs_flags) / sizeof(ufs_flags[0])]; 513 char dev[4 + 1 + 7 + 1]; /* 12bit marjor + 20bit minor */ 514 char *name; 515 mode_t type; 516 517 KGETRET(VTOI(vp), &inode, sizeof(struct inode), "vnode's inode"); 518 KGETRET(ip->i_din.e2fs_din, &dip, sizeof (struct ext2fs_dinode), 519 "inode's dinode"); 520 521 /* 522 * XXX need to to locking state. 523 */ 524 525 (void)getflags(ufs_flags, flags, ip->i_flag); 526 PRWORD(ovflw, " %*llu", 7, 1, (unsigned long long)ip->i_number); 527 PRWORD(ovflw, " %*s", 6, 1, flags); 528 type = dip.e2di_mode & S_IFMT; 529 if (S_ISCHR(dip.e2di_mode) || S_ISBLK(dip.e2di_mode)) { 530 if (usenumflag || 531 (name = devname(dip.e2di_rdev, type)) == NULL) { 532 snprintf(dev, sizeof(dev), "%d,%d", 533 major(dip.e2di_rdev), minor(dip.e2di_rdev)); 534 name = dev; 535 } 536 PRWORD(ovflw, " %*s", 8, 1, name); 537 } else 538 PRWORD(ovflw, " %*u", 8, 1, (u_int)dip.e2di_size); 539 return (0); 540 } 541 542 const struct flagbit_desc nfs_flags[] = { 543 { NFLUSHWANT, 'W' }, 544 { NFLUSHINPROG, 'P' }, 545 { NMODIFIED, 'M' }, 546 { NWRITEERR, 'E' }, 547 { NACC, 'A' }, 548 { NUPD, 'U' }, 549 { NCHG, 'C' }, 550 { 0, '\0' }, 551 }; 552 553 void 554 nfs_header(void) 555 { 556 557 (void)printf(" FILEID NFLAG RDEV|SZ"); 558 } 559 560 int 561 nfs_print(struct vnode *vp, int ovflw) 562 { 563 struct nfsnode nfsnode, *np = &nfsnode; 564 char flags[sizeof(nfs_flags) / sizeof(nfs_flags[0])]; 565 char dev[4 + 1 + 7 + 1]; /* 12bit marjor + 20bit minor */ 566 struct vattr va; 567 char *name; 568 mode_t type; 569 570 KGETRET(VTONFS(vp), &nfsnode, sizeof(nfsnode), "vnode's nfsnode"); 571 (void)getflags(nfs_flags, flags, np->n_flag); 572 573 KGETRET(np->n_vattr, &va, sizeof(va), "vnode attr"); 574 PRWORD(ovflw, " %*ld", 7, 1, (long)va.va_fileid); 575 PRWORD(ovflw, " %*s", 6, 1, flags); 576 switch (va.va_type) { 577 case VCHR: 578 type = S_IFCHR; 579 goto device; 580 581 case VBLK: 582 type = S_IFBLK; 583 device: 584 if (usenumflag || (name = devname(va.va_rdev, type)) == NULL) { 585 (void)snprintf(dev, sizeof(dev), "%d,%d", 586 major(va.va_rdev), minor(va.va_rdev)); 587 name = dev; 588 } 589 PRWORD(ovflw, " %*s", 8, 1, name); 590 break; 591 default: 592 PRWORD(ovflw, " %*lld", 8, 1, (long long)np->n_size); 593 break; 594 } 595 return (0); 596 } 597 598 void 599 layer_header(void) 600 { 601 602 (void)printf(" %*s", PTRSTRWIDTH, "LOWER"); 603 } 604 605 int 606 layer_print(struct vnode *vp, int ovflw) 607 { 608 struct layer_node lnode, *lp = &lnode; 609 610 KGETRET(VTOLAYER(vp), &lnode, sizeof(lnode), "layer vnode"); 611 612 PRWORD(ovflw, " %*lx", PTRSTRWIDTH + 1, 1, (long)lp->layer_lowervp); 613 return (0); 614 } 615 616 /* 617 * Given a pointer to a mount structure in kernel space, 618 * read it in and return a usable pointer to it. 619 */ 620 struct mount * 621 getmnt(struct mount *maddr) 622 { 623 static struct mtab { 624 struct mtab *next; 625 struct mount *maddr; 626 struct mount mount; 627 } *mhead = NULL; 628 struct mtab *mt; 629 struct mount mb; 630 631 for (mt = mhead; mt != NULL; mt = mt->next) 632 if (maddr == mt->maddr) 633 return (&mt->mount); 634 KGETRET(maddr, &mb, sizeof(struct mount), "mount table"); 635 if ((mt = malloc(sizeof(struct mtab))) == NULL) 636 err(1, "malloc"); 637 mt->mount = mb; 638 mt->maddr = maddr; 639 mt->next = mhead; 640 mhead = mt; 641 return (&mt->mount); 642 } 643 644 void 645 mount_print(struct mount *mp) 646 { 647 int flags; 648 649 (void)printf("*** MOUNT %s %s on %s", ST.f_fstypename, 650 ST.f_mntfromname, ST.f_mntonname); 651 if ((flags = mp->mnt_flag) != 0) { 652 int i; 653 const char *sep = " ("; 654 655 for (i = 0; i < sizeof mnt_flags / sizeof mnt_flags[0]; i++) { 656 if (flags & mnt_flags[i].m_flag) { 657 (void)printf("%s%s", sep, mnt_flags[i].m_name); 658 flags &= ~mnt_flags[i].m_flag; 659 sep = ","; 660 } 661 } 662 if (flags) 663 (void)printf("%sunknown_flags:%x", sep, flags); 664 (void)printf(")"); 665 } 666 (void)printf("\n"); 667 } 668 669 char * 670 loadvnodes(int *avnodes) 671 { 672 int mib[2]; 673 size_t copysize; 674 char *vnodebase; 675 676 if (totalflag) { 677 KGET(V_NUMV, *avnodes); 678 return NULL; 679 } 680 if (memf != NULL) { 681 /* 682 * do it by hand 683 */ 684 return (kinfo_vnodes(avnodes)); 685 } 686 mib[0] = CTL_KERN; 687 mib[1] = KERN_VNODE; 688 if (sysctl(mib, 2, NULL, ©size, NULL, 0) == -1) 689 err(1, "sysctl: KERN_VNODE"); 690 if ((vnodebase = malloc(copysize)) == NULL) 691 err(1, "malloc"); 692 if (sysctl(mib, 2, vnodebase, ©size, NULL, 0) == -1) 693 err(1, "sysctl: KERN_VNODE"); 694 if (copysize % (VPTRSZ + VNODESZ)) 695 errx(1, "vnode size mismatch"); 696 *avnodes = copysize / (VPTRSZ + VNODESZ); 697 698 return (vnodebase); 699 } 700 701 /* 702 * simulate what a running kernel does in in kinfo_vnode 703 */ 704 char * 705 kinfo_vnodes(int *avnodes) 706 { 707 struct mntlist mountlist; 708 struct mount *mp, mount; 709 struct vnode *vp, vnode; 710 char *beg, *bp, *ep; 711 int numvnodes; 712 713 KGET(V_NUMV, numvnodes); 714 if ((bp = malloc((numvnodes + 20) * (VPTRSZ + VNODESZ))) == NULL) 715 err(1, "malloc"); 716 beg = bp; 717 ep = bp + (numvnodes + 20) * (VPTRSZ + VNODESZ); 718 KGET(V_MOUNTLIST, mountlist); 719 for (mp = mountlist.cqh_first;; 720 mp = mount.mnt_list.cqe_next) { 721 KGET2(mp, &mount, sizeof(mount), "mount entry"); 722 TAILQ_FOREACH(vp, &mount.mnt_vnodelist, v_mntvnodes) { 723 KGET2(vp, &vnode, sizeof(vnode), "vnode"); 724 if (bp + VPTRSZ + VNODESZ > ep) 725 /* XXX - should realloc */ 726 errx(1, "no more room for vnodes"); 727 memmove(bp, &vp, VPTRSZ); 728 bp += VPTRSZ; 729 memmove(bp, &vnode, VNODESZ); 730 bp += VNODESZ; 731 } 732 if (mp == mountlist.cqh_last) 733 break; 734 } 735 *avnodes = (bp - beg) / (VPTRSZ + VNODESZ); 736 return (beg); 737 } 738 739 void 740 ttymode(void) 741 { 742 int ntty; 743 struct ttylist_head tty_head; 744 struct tty *tp, tty; 745 746 KGET(TTY_NTTY, ntty); 747 (void)printf("%d terminal device%s\n", ntty, ntty == 1 ? "" : "s"); 748 KGET(TTY_TTYLIST, tty_head); 749 (void)printf( 750 " LINE RAW CAN OUT HWT LWT COL STATE %-*s PGID DISC\n", 751 PTRSTRWIDTH, "SESS"); 752 for (tp = tty_head.tqh_first; tp; tp = tty.tty_link.tqe_next) { 753 KGET2(tp, &tty, sizeof tty, "tty struct"); 754 ttyprt(&tty); 755 } 756 } 757 758 static const struct flagbit_desc ttystates[] = { 759 { TS_ISOPEN, 'O'}, 760 { TS_DIALOUT, '>'}, 761 { TS_CARR_ON, 'C'}, 762 { TS_TIMEOUT, 'T'}, 763 { TS_FLUSH, 'F'}, 764 { TS_BUSY, 'B'}, 765 { TS_XCLUDE, 'X'}, 766 { TS_TTSTOP, 'S'}, 767 { TS_TBLOCK, 'K'}, 768 { TS_ASYNC, 'Y'}, 769 { TS_BKSL, 'D'}, 770 { TS_ERASE, 'E'}, 771 { TS_LNCH, 'L'}, 772 { TS_TYPEN, 'P'}, 773 { TS_CNTTB, 'N'}, 774 { 0, '\0'}, 775 }; 776 777 void 778 ttyprt(struct tty *tp) 779 { 780 char state[sizeof(ttystates) / sizeof(ttystates[0]) + 1]; 781 char dev[2 + 3 + 1 + 5 + 1]; /* 12bit major + 20bit minor */ 782 struct linesw t_linesw; 783 const char *name; 784 char buffer; 785 pid_t pgid; 786 int n, ovflw; 787 788 if (usenumflag || (name = devname(tp->t_dev, S_IFCHR)) == NULL) { 789 (void)snprintf(dev, sizeof(dev), "0x%3x:%x", 790 major(tp->t_dev), minor(tp->t_dev)); 791 name = dev; 792 } 793 ovflw = 0; 794 PRWORD(ovflw, "%-*s", 7, 0, name); 795 PRWORD(ovflw, " %*d", 3, 1, tp->t_rawq.c_cc); 796 PRWORD(ovflw, " %*d", 4, 1, tp->t_canq.c_cc); 797 PRWORD(ovflw, " %*d", 4, 1, tp->t_outq.c_cc); 798 PRWORD(ovflw, " %*d", 5, 1, tp->t_hiwat); 799 PRWORD(ovflw, " %*d", 4, 1, tp->t_lowat); 800 PRWORD(ovflw, " %*d", 8, 1, tp->t_column); 801 n = getflags(ttystates, state, tp->t_state); 802 if (tp->t_wopen) { 803 state[n++] = 'W'; 804 state[n] = '\0'; 805 } 806 PRWORD(ovflw, " %-*s", 7, 1, state); 807 PRWORD(ovflw, " %*lX", PTRSTRWIDTH + 1, 1, (u_long)tp->t_session); 808 pgid = 0; 809 if (tp->t_pgrp != NULL) 810 KGET2(&tp->t_pgrp->pg_id, &pgid, sizeof(pid_t), "pgid"); 811 PRWORD(ovflw, " %*d", 6, 1, pgid); 812 KGET2(tp->t_linesw, &t_linesw, sizeof(t_linesw), 813 "line discipline switch table"); 814 name = t_linesw.l_name; 815 (void)putchar(' '); 816 for (;;) { 817 KGET2(name, &buffer, sizeof(buffer), "line discipline name"); 818 if (buffer == '\0') 819 break; 820 (void)putchar(buffer); 821 name++; 822 } 823 (void)putchar('\n'); 824 } 825 826 static const struct flagbit_desc filemode_flags[] = { 827 { FREAD, 'R' }, 828 { FWRITE, 'W' }, 829 { FAPPEND, 'A' }, 830 #ifdef FSHLOCK /* currently gone */ 831 { FSHLOCK, 'S' }, 832 { FEXLOCK, 'X' }, 833 #endif 834 { FASYNC, 'I' }, 835 { 0, '\0' }, 836 }; 837 838 void 839 filemode(void) 840 { 841 struct file *fp; 842 struct file *addr; 843 char flags[sizeof(filemode_flags) / sizeof(filemode_flags[0])]; 844 char *buf, *offset; 845 int len, maxfile, nfile, ovflw; 846 847 KGET(FNL_MAXFILE, maxfile); 848 if (totalflag) { 849 KGET(FNL_NFILE, nfile); 850 (void)printf("%3d/%3d files\n", nfile, maxfile); 851 return; 852 } 853 if (getfiles(&buf, &len, &offset) == -1) 854 return; 855 /* 856 * Getfiles returns in malloc'd memory a pointer to the first file 857 * structure, and then an array of file structs (whose addresses are 858 * derivable from the previous entry). 859 */ 860 addr = ((struct filelist *)offset)->lh_first; 861 fp = (struct file *)(offset + sizeof(struct filelist)); 862 nfile = (len - sizeof(struct filelist)) / sizeof(struct file); 863 864 (void)printf("%d/%d open files\n", nfile, maxfile); 865 (void)printf("%*s%s%*s TYPE FLG CNT MSG %*s%s%*s IFLG OFFSET\n", 866 (PTRSTRWIDTH - 4) / 2, "", " LOC", (PTRSTRWIDTH - 4) / 2, "", 867 (PTRSTRWIDTH - 4) / 2, "", "DATA", (PTRSTRWIDTH - 4) / 2, ""); 868 for (; (char *)fp < offset + len; addr = fp->f_list.le_next, fp++) { 869 if ((unsigned)fp->f_type >= sizeof(dtypes) / sizeof(dtypes[0])) 870 continue; 871 ovflw = 0; 872 (void)getflags(filemode_flags, flags, fp->f_flag); 873 PRWORD(ovflw, "%*lx", PTRSTRWIDTH, 0, (long)addr); 874 PRWORD(ovflw, " %-*s", 9, 1, dtypes[fp->f_type]); 875 PRWORD(ovflw, " %*s", 6, 1, flags); 876 PRWORD(ovflw, " %*d", 5, 1, fp->f_count); 877 PRWORD(ovflw, " %*d", 5, 1, fp->f_msgcount); 878 PRWORD(ovflw, " %*lx", PTRSTRWIDTH + 1, 2, (long)fp->f_data); 879 PRWORD(ovflw, " %*x", 5, 1, fp->f_iflags); 880 if (fp->f_offset < 0) 881 PRWORD(ovflw, " %-*lld\n", PTRSTRWIDTH + 1, 2, 882 (long long)fp->f_offset); 883 else 884 PRWORD(ovflw, " %-*lld\n", PTRSTRWIDTH + 1, 2, 885 (long long)fp->f_offset); 886 } 887 free(buf); 888 } 889 890 int 891 getfiles(char **abuf, int *alen, char **aoffset) 892 { 893 size_t len; 894 int mib[2]; 895 char *buf; 896 size_t offset; 897 898 /* 899 * XXX 900 * Add emulation of KINFO_FILE here. 901 */ 902 if (memf != NULL) 903 errx(1, "files on dead kernel, not implemented"); 904 905 mib[0] = CTL_KERN; 906 mib[1] = KERN_FILE; 907 if (sysctl(mib, 2, NULL, &len, NULL, 0) == -1) { 908 warn("sysctl: KERN_FILE"); 909 return (-1); 910 } 911 /* We need to align (struct file *) in the buffer. */ 912 offset = len % sizeof(off_t); 913 if ((buf = malloc(len + offset)) == NULL) 914 err(1, "malloc"); 915 if (sysctl(mib, 2, buf + offset, &len, NULL, 0) == -1) { 916 warn("sysctl: KERN_FILE"); 917 return (-1); 918 } 919 *abuf = buf; 920 *alen = len; 921 *aoffset = (buf + offset); 922 return (0); 923 } 924 925 void 926 usage(void) 927 { 928 929 (void)fprintf(stderr, 930 "usage: %s [-T|-f|-s|-t|-v] [-ghkmn] [-M core] [-N system]\n", 931 getprogname()); 932 exit(1); 933 } 934
Indexes created Fri Sep 26 08:10:20 GMT 2025