pstat.c revision 1.126
1 /* $NetBSD: pstat.c,v 1.126 2017/01/11 09:07:58 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 1.126 2017/01/11 09:07:58 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_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 V_NEXT_OFFSET 2 93 { "_vnode_offset_next_by_mount", 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 (/* CONSTCOND */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 (/* CONSTCOND */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 (/* CONSTCOND */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 int main(int, char **); 174 void mount_print(struct mount *); 175 void nfs_header(void); 176 int nfs_print(struct vnode *, int); 177 void ttymode(void); 178 void ttyprt(struct tty *); 179 void ufs_header(void); 180 int ufs_print(struct vnode *, int); 181 int ext2fs_print(struct vnode *, int); 182 __dead void usage(void); 183 void vnode_header(void); 184 int vnode_print(struct vnode *, struct vnode *); 185 void vnodemode(void); 186 187 int 188 main(int argc, char *argv[]) 189 { 190 int ch, i, quit, ret, use_sysctl; 191 int fileflag, swapflag, ttyflag, vnodeflag; 192 gid_t egid = getegid(); 193 char buf[_POSIX2_LINE_MAX]; 194 195 setegid(getgid()); 196 fileflag = swapflag = ttyflag = vnodeflag = 0; 197 while ((ch = getopt(argc, argv, "TM:N:fghikmnstv")) != -1) 198 switch (ch) { 199 case 'f': 200 fileflag = 1; 201 break; 202 case 'M': 203 memf = optarg; 204 break; 205 case 'N': 206 nlistf = optarg; 207 break; 208 case 'n': 209 usenumflag = 1; 210 break; 211 case 's': 212 swapflag = 1; 213 break; 214 case 'T': 215 totalflag = 1; 216 break; 217 case 't': 218 ttyflag = 1; 219 break; 220 case 'k': 221 kflag = 1; 222 break; 223 case 'g': 224 kflag = 3; /* 1k ^ 3 */ 225 break; 226 case 'h': 227 hflag = 1; 228 break; 229 case 'm': 230 kflag = 2; /* 1k ^ 2 */ 231 break; 232 case 'v': 233 case 'i': /* Backward compatibility. */ 234 vnodeflag = 1; 235 break; 236 default: 237 usage(); 238 } 239 argc -= optind; 240 argv += optind; 241 242 /* 243 * Discard setgid privileges. If not the running kernel, we toss 244 * them away totally so that bad guys can't print interesting stuff 245 * from kernel memory, otherwise switch back to kmem for the 246 * duration of the kvm_openfiles() call. 247 */ 248 if (nlistf != NULL || memf != NULL) 249 (void)setgid(getgid()); 250 else 251 (void)setegid(egid); 252 253 use_sysctl = (nlistf == NULL && memf == NULL); 254 255 if ((kd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, buf)) == 0) 256 errx(1, "kvm_openfiles: %s", buf); 257 258 /* get rid of it now anyway */ 259 if (nlistf == NULL && memf == NULL) 260 (void)setgid(getgid()); 261 if ((ret = kvm_nlist(kd, nl)) != 0) { 262 if (ret == -1) 263 errx(1, "kvm_nlist: %s", kvm_geterr(kd)); 264 for (i = quit = 0; i <= NLMANDATORY; i++) 265 if (!nl[i].n_value) { 266 quit = 1; 267 warnx("undefined symbol: %s", nl[i].n_name); 268 } 269 if (quit) 270 exit(1); 271 } 272 if (!(fileflag | vnodeflag | ttyflag | swapflag | totalflag)) 273 usage(); 274 if (fileflag || totalflag) 275 filemode(); 276 if (vnodeflag || totalflag) 277 vnodemode(); 278 if (ttyflag) 279 ttymode(); 280 if (swapflag || totalflag) 281 if (use_sysctl) 282 list_swap(0, kflag, 0, totalflag, 1, hflag); 283 exit(0); 284 } 285 286 #define VPTRSZ sizeof(struct vnode *) 287 #define VNODESZ sizeof(struct vnode) 288 #define PTRSTRWIDTH ((int)sizeof(void *) * 2) /* Width of resulting string 289 when pointer is printed 290 in hexadecimal. */ 291 292 static void 293 devprintf(char *buf, size_t buflen, dev_t dev) 294 { 295 (void)snprintf(buf, buflen, "%llu,%llu", 296 (unsigned long long)major(dev), 297 (unsigned long long)minor(dev)); 298 } 299 300 void 301 vnodemode(void) 302 { 303 char *e_vnodebase, *endvnode, *evp; 304 struct vnode *vp; 305 struct mount *maddr, *mp; 306 int numvnodes, ovflw; 307 int (*vnode_fsprint) (struct vnode *, int); /* per-fs data printer */ 308 309 mp = NULL; 310 e_vnodebase = loadvnodes(&numvnodes); 311 if (totalflag) { 312 (void)printf("%7d vnodes\n", numvnodes); 313 goto out; 314 } 315 endvnode = e_vnodebase + numvnodes * (VPTRSZ + VNODESZ); 316 (void)printf("%d active vnodes\n", numvnodes); 317 318 #define ST mp->mnt_stat 319 #define FSTYPE_IS(mp, name) \ 320 (strncmp((mp)->mnt_stat.f_fstypename, (name), \ 321 sizeof((mp)->mnt_stat.f_fstypename)) == 0) 322 maddr = NULL; 323 vnode_fsprint = NULL; 324 for (evp = e_vnodebase; evp < endvnode; evp += VPTRSZ + VNODESZ) { 325 vp = (struct vnode *)(evp + VPTRSZ); 326 if (vp->v_mount != maddr) { 327 /* 328 * New filesystem 329 */ 330 if ((mp = getmnt(vp->v_mount)) == NULL) 331 continue; 332 maddr = vp->v_mount; 333 mount_print(mp); 334 vnode_header(); 335 /* 336 * XXX do this in a more fs-independent way 337 */ 338 if (FSTYPE_IS(mp, MOUNT_FFS) || 339 FSTYPE_IS(mp, MOUNT_MFS)) { 340 ufs_header(); 341 vnode_fsprint = ufs_print; 342 } else if (FSTYPE_IS(mp, MOUNT_NFS)) { 343 nfs_header(); 344 vnode_fsprint = nfs_print; 345 } else if (FSTYPE_IS(mp, MOUNT_EXT2FS)) { 346 ufs_header(); 347 vnode_fsprint = ext2fs_print; 348 } else if (FSTYPE_IS(mp, MOUNT_NULL) || 349 FSTYPE_IS(mp, MOUNT_OVERLAY) || 350 FSTYPE_IS(mp, MOUNT_UMAP)) { 351 layer_header(); 352 vnode_fsprint = layer_print; 353 } else 354 vnode_fsprint = NULL; 355 (void)printf("\n"); 356 } 357 ovflw = vnode_print(*(struct vnode **)evp, vp); 358 if (VTOI(vp) != NULL && vnode_fsprint != NULL) 359 (*vnode_fsprint)(vp, ovflw); 360 (void)printf("\n"); 361 } 362 363 out: 364 if (e_vnodebase) 365 free(e_vnodebase); 366 } 367 368 int 369 getflags(const struct flagbit_desc *fd, char *p, u_int flags) 370 { 371 char *q = p; 372 373 if (flags == 0) { 374 *p++ = '-'; 375 *p = '\0'; 376 return (0); 377 } 378 379 for (; fd->fd_flags != 0; fd++) 380 if ((flags & fd->fd_flags) != 0) 381 *p++ = fd->fd_mark; 382 *p = '\0'; 383 return (p - q); 384 } 385 386 const struct flagbit_desc vnode_flags[] = { 387 { VV_ROOT, 'R' }, 388 { VI_TEXT, 'T' }, 389 { VV_SYSTEM, 'S' }, 390 { VV_ISTTY, 'I' }, 391 { VI_EXECMAP, 'E' }, 392 { VU_DIROP, 'D' }, 393 { VI_ONWORKLST, 'O' }, 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 PRWORD(ovflw, " %*ld", 5, 1, (long)vp->v_usecount); 448 PRWORD(ovflw, " %*ld", 5, 1, (long)vp->v_holdcnt); 449 PRWORD(ovflw, " %*d", 4, 1, vp->v_tag); 450 PRWORD(ovflw, " %*d", 6, 1, vp->v_uobj.uo_npages); 451 return (ovflw); 452 } 453 454 const struct flagbit_desc ufs_flags[] = { 455 { IN_ACCESS, 'A' }, 456 { IN_CHANGE, 'C' }, 457 { IN_UPDATE, 'U' }, 458 { IN_MODIFIED, 'M' }, 459 { IN_ACCESSED, 'a' }, 460 { IN_SHLOCK, 'S' }, 461 { IN_EXLOCK, 'E' }, 462 { IN_SPACECOUNTED, 's' }, 463 { 0, '\0' }, 464 }; 465 466 void 467 ufs_header(void) 468 { 469 470 (void)printf(" FILEID IFLAG RDEV|SZ"); 471 } 472 473 int 474 ufs_print(struct vnode *vp, int ovflw) 475 { 476 struct inode inode, *ip = &inode; 477 union dinode { 478 struct ufs1_dinode dp1; 479 struct ufs2_dinode dp2; 480 } dip; 481 struct ufsmount ump; 482 char flags[sizeof(ufs_flags) / sizeof(ufs_flags[0])]; 483 char dev[4 + 1 + 7 + 1]; /* 12bit marjor + 20bit minor */ 484 char *name; 485 mode_t type; 486 dev_t rdev; 487 488 KGETRET(VTOI(vp), &inode, sizeof(struct inode), "vnode's inode"); 489 KGETRET(ip->i_ump, &ump, sizeof(struct ufsmount), 490 "vnode's mount point"); 491 492 if (ump.um_fstype == UFS1) { 493 KGETRET(ip->i_din.ffs1_din, &dip, sizeof (struct ufs1_dinode), 494 "inode's dinode"); 495 rdev = (uint32_t)dip.dp1.di_rdev; 496 } else { 497 KGETRET(ip->i_din.ffs2_din, &dip, sizeof (struct ufs2_dinode), 498 "inode's UFS2 dinode"); 499 rdev = dip.dp2.di_rdev; 500 } 501 502 /* 503 * XXX need to to locking state. 504 */ 505 506 (void)getflags(ufs_flags, flags, ip->i_flag); 507 PRWORD(ovflw, " %*llu", 7, 1, (unsigned long long)ip->i_number); 508 PRWORD(ovflw, " %*s", 6, 1, flags); 509 type = ip->i_mode & S_IFMT; 510 if (S_ISCHR(ip->i_mode) || S_ISBLK(ip->i_mode)) { 511 if (usenumflag || 512 (name = devname(rdev, type)) == NULL) { 513 devprintf(dev, sizeof(dev), rdev); 514 name = dev; 515 } 516 PRWORD(ovflw, " %*s", 8, 1, name); 517 } else 518 PRWORD(ovflw, " %*lld", 8, 1, (long long)ip->i_size); 519 return 0; 520 } 521 522 int 523 ext2fs_print(struct vnode *vp, int ovflw) 524 { 525 struct inode inode, *ip = &inode; 526 struct ext2fs_dinode dip; 527 char flags[sizeof(ufs_flags) / sizeof(ufs_flags[0])]; 528 char dev[4 + 1 + 7 + 1]; /* 12bit marjor + 20bit minor */ 529 char *name; 530 mode_t type; 531 532 KGETRET(VTOI(vp), &inode, sizeof(struct inode), "vnode's inode"); 533 KGETRET(ip->i_din.e2fs_din, &dip, sizeof (struct ext2fs_dinode), 534 "inode's dinode"); 535 536 /* 537 * XXX need to to locking state. 538 */ 539 540 (void)getflags(ufs_flags, flags, ip->i_flag); 541 PRWORD(ovflw, " %*llu", 7, 1, (unsigned long long)ip->i_number); 542 PRWORD(ovflw, " %*s", 6, 1, flags); 543 type = dip.e2di_mode & S_IFMT; 544 if (S_ISCHR(dip.e2di_mode) || S_ISBLK(dip.e2di_mode)) { 545 if (usenumflag || 546 (name = devname(dip.e2di_rdev, type)) == NULL) { 547 devprintf(dev, sizeof(dev), dip.e2di_rdev); 548 name = dev; 549 } 550 PRWORD(ovflw, " %*s", 8, 1, name); 551 } else 552 PRWORD(ovflw, " %*u", 8, 1, (u_int)dip.e2di_size); 553 return (0); 554 } 555 556 const struct flagbit_desc nfs_flags[] = { 557 { NFLUSHWANT, 'W' }, 558 { NFLUSHINPROG, 'P' }, 559 { NMODIFIED, 'M' }, 560 { NWRITEERR, 'E' }, 561 { NACC, 'A' }, 562 { NUPD, 'U' }, 563 { NCHG, 'C' }, 564 { 0, '\0' }, 565 }; 566 567 void 568 nfs_header(void) 569 { 570 571 (void)printf(" FILEID NFLAG RDEV|SZ"); 572 } 573 574 int 575 nfs_print(struct vnode *vp, int ovflw) 576 { 577 struct nfsnode nfsnode, *np = &nfsnode; 578 char flags[sizeof(nfs_flags) / sizeof(nfs_flags[0])]; 579 char dev[4 + 1 + 7 + 1]; /* 12bit marjor + 20bit minor */ 580 struct vattr va; 581 char *name; 582 mode_t type; 583 584 KGETRET(VTONFS(vp), &nfsnode, sizeof(nfsnode), "vnode's nfsnode"); 585 (void)getflags(nfs_flags, flags, np->n_flag); 586 587 KGETRET(np->n_vattr, &va, sizeof(va), "vnode attr"); 588 PRWORD(ovflw, " %*ld", 7, 1, (long)va.va_fileid); 589 PRWORD(ovflw, " %*s", 6, 1, flags); 590 switch (va.va_type) { 591 case VCHR: 592 type = S_IFCHR; 593 goto device; 594 595 case VBLK: 596 type = S_IFBLK; 597 device: 598 if (usenumflag || (name = devname(va.va_rdev, type)) == NULL) { 599 devprintf(dev, sizeof(dev), va.va_rdev); 600 name = dev; 601 } 602 PRWORD(ovflw, " %*s", 8, 1, name); 603 break; 604 default: 605 PRWORD(ovflw, " %*lld", 8, 1, (long long)np->n_size); 606 break; 607 } 608 return (0); 609 } 610 611 void 612 layer_header(void) 613 { 614 615 (void)printf(" %*s", PTRSTRWIDTH, "LOWER"); 616 } 617 618 int 619 layer_print(struct vnode *vp, int ovflw) 620 { 621 struct layer_node lnode, *lp = &lnode; 622 623 KGETRET(VTOLAYER(vp), &lnode, sizeof(lnode), "layer vnode"); 624 625 PRWORD(ovflw, " %*lx", PTRSTRWIDTH + 1, 1, (long)lp->layer_lowervp); 626 return (0); 627 } 628 629 /* 630 * Given a pointer to a mount structure in kernel space, 631 * read it in and return a usable pointer to it. 632 */ 633 struct mount * 634 getmnt(struct mount *maddr) 635 { 636 static struct mtab { 637 struct mtab *next; 638 struct mount *maddr; 639 struct mount mount; 640 } *mhead = NULL; 641 struct mtab *mt; 642 struct mount mb; 643 644 for (mt = mhead; mt != NULL; mt = mt->next) 645 if (maddr == mt->maddr) 646 return (&mt->mount); 647 KGETRET(maddr, &mb, sizeof(struct mount), "mount table"); 648 if ((mt = malloc(sizeof(struct mtab))) == NULL) 649 err(1, "malloc"); 650 mt->mount = mb; 651 mt->maddr = maddr; 652 mt->next = mhead; 653 mhead = mt; 654 return (&mt->mount); 655 } 656 657 void 658 mount_print(struct mount *mp) 659 { 660 int flags; 661 662 (void)printf("*** MOUNT %s %s on %s", ST.f_fstypename, 663 ST.f_mntfromname, ST.f_mntonname); 664 if ((flags = mp->mnt_flag) != 0) { 665 size_t i; 666 const char *sep = " ("; 667 668 for (i = 0; i < sizeof mnt_flags / sizeof mnt_flags[0]; i++) { 669 if (flags & mnt_flags[i].m_flag) { 670 (void)printf("%s%s", sep, mnt_flags[i].m_name); 671 flags &= ~mnt_flags[i].m_flag; 672 sep = ","; 673 } 674 } 675 if (flags) 676 (void)printf("%sunknown_flags:%x", sep, flags); 677 (void)printf(")"); 678 } 679 (void)printf("\n"); 680 } 681 682 char * 683 loadvnodes(int *avnodes) 684 { 685 int mib[2]; 686 int status; 687 size_t copysize; 688 #if 0 689 size_t oldsize; 690 #endif 691 char *vnodebase; 692 693 if (totalflag) { 694 KGET(V_NUMV, *avnodes); 695 return NULL; 696 } 697 if (memf != NULL) { 698 /* 699 * do it by hand 700 */ 701 return (kinfo_vnodes(avnodes)); 702 } 703 mib[0] = CTL_KERN; 704 mib[1] = KERN_VNODE; 705 /* 706 * First sysctl call gets the necessary buffer size; second 707 * sysctl call gets the data. We allow for some growth in the 708 * data size between the two sysctl calls (increases of a few 709 * thousand vnodes in between the two calls have been observed). 710 * We ignore ENOMEM from the second sysctl call, which can 711 * happen if the kernel's data grew by even more than we allowed 712 * for. 713 */ 714 if (sysctl(mib, 2, NULL, ©size, NULL, 0) == -1) 715 err(1, "sysctl: KERN_VNODE"); 716 #if 0 717 oldsize = copysize; 718 #endif 719 copysize += 100 * sizeof(struct vnode) + copysize / 20; 720 if ((vnodebase = malloc(copysize)) == NULL) 721 err(1, "malloc"); 722 status = sysctl(mib, 2, vnodebase, ©size, NULL, 0); 723 if (status == -1 && errno != ENOMEM) 724 err(1, "sysctl: KERN_VNODE"); 725 #if 0 /* for debugging the amount of growth allowed for */ 726 if (copysize != oldsize) { 727 warnx("count changed from %ld to %ld (%+ld)%s", 728 (long)(oldsize / sizeof(struct vnode)), 729 (long)(copysize / sizeof(struct vnode)), 730 (long)(copysize / sizeof(struct vnode)) - 731 (long)(oldsize / sizeof(struct vnode)), 732 (status == 0 ? "" : ", and errno = ENOMEM")); 733 } 734 #endif 735 if (copysize % (VPTRSZ + VNODESZ)) 736 errx(1, "vnode size mismatch"); 737 *avnodes = copysize / (VPTRSZ + VNODESZ); 738 739 return (vnodebase); 740 } 741 742 /* 743 * simulate what a running kernel does in in kinfo_vnode 744 */ 745 char * 746 kinfo_vnodes(int *avnodes) 747 { 748 struct mntlist mlist; 749 struct mount *mp, mount; 750 struct vnode *vp, vnode; 751 char *beg, *bp, *ep; 752 int numvnodes, next_offset; 753 754 KGET(V_NUMV, numvnodes); 755 if ((bp = malloc((numvnodes + 20) * (VPTRSZ + VNODESZ))) == NULL) 756 err(1, "malloc"); 757 beg = bp; 758 ep = bp + (numvnodes + 20) * (VPTRSZ + VNODESZ); 759 KGET(V_NEXT_OFFSET, next_offset); 760 KGET(V_MOUNTLIST, mlist); 761 mp = TAILQ_FIRST(&mlist); 762 while (mp != NULL) { 763 KGET2(mp, &mount, sizeof(mount), "mount entry"); 764 vp = (struct vnode *)TAILQ_FIRST(&mount.mnt_vnodelist); 765 while (vp != NULL) { 766 KGET2(vp, &vnode, sizeof(vnode), "vnode"); 767 if (bp + VPTRSZ + VNODESZ > ep) 768 /* XXX - should realloc */ 769 errx(1, "no more room for vnodes"); 770 memmove(bp, &vp, VPTRSZ); 771 bp += VPTRSZ; 772 memmove(bp, &vnode, VNODESZ); 773 bp += VNODESZ; 774 KGET2((char *)vp + next_offset, &vp, sizeof(vp), "nvp"); 775 } 776 mp = TAILQ_NEXT(&mount, mnt_list); 777 } 778 *avnodes = (bp - beg) / (VPTRSZ + VNODESZ); 779 return (beg); 780 } 781 782 void 783 ttymode(void) 784 { 785 int ntty; 786 struct ttylist_head tty_head; 787 struct tty *tp, tty; 788 789 KGET(TTY_NTTY, ntty); 790 (void)printf("%d terminal device%s\n", ntty, ntty == 1 ? "" : "s"); 791 KGET(TTY_TTYLIST, tty_head); 792 (void)printf( 793 " LINE RAW CAN OUT HWT LWT COL STATE %-*s PGID DISC\n", 794 PTRSTRWIDTH, "SESS"); 795 for (tp = tty_head.tqh_first; tp; tp = tty.tty_link.tqe_next) { 796 KGET2(tp, &tty, sizeof tty, "tty struct"); 797 ttyprt(&tty); 798 } 799 } 800 801 static const struct flagbit_desc ttystates[] = { 802 { TS_ISOPEN, 'O'}, 803 { TS_DIALOUT, '>'}, 804 { TS_CARR_ON, 'C'}, 805 { TS_TIMEOUT, 'T'}, 806 { TS_FLUSH, 'F'}, 807 { TS_BUSY, 'B'}, 808 { TS_XCLUDE, 'X'}, 809 { TS_TTSTOP, 'S'}, 810 { TS_TBLOCK, 'K'}, 811 { TS_ASYNC, 'Y'}, 812 { TS_BKSL, 'D'}, 813 { TS_ERASE, 'E'}, 814 { TS_LNCH, 'L'}, 815 { TS_TYPEN, 'P'}, 816 { TS_CNTTB, 'N'}, 817 { 0, '\0'}, 818 }; 819 820 void 821 ttyprt(struct tty *tp) 822 { 823 char state[sizeof(ttystates) / sizeof(ttystates[0]) + 1]; 824 char dev[2 + 3 + 1 + 5 + 1]; /* 12bit major + 20bit minor */ 825 struct linesw t_linesw; 826 const char *name; 827 char buffer; 828 pid_t pgid; 829 int n, ovflw; 830 831 if (usenumflag || (name = devname(tp->t_dev, S_IFCHR)) == NULL) { 832 devprintf(dev, sizeof(dev), tp->t_dev); 833 name = dev; 834 } 835 ovflw = 0; 836 PRWORD(ovflw, "%-*s", 7, 0, name); 837 PRWORD(ovflw, " %*d", 3, 1, tp->t_rawq.c_cc); 838 PRWORD(ovflw, " %*d", 4, 1, tp->t_canq.c_cc); 839 PRWORD(ovflw, " %*d", 4, 1, tp->t_outq.c_cc); 840 PRWORD(ovflw, " %*d", 5, 1, tp->t_hiwat); 841 PRWORD(ovflw, " %*d", 4, 1, tp->t_lowat); 842 PRWORD(ovflw, " %*d", 8, 1, tp->t_column); 843 n = getflags(ttystates, state, tp->t_state); 844 if (tp->t_wopen) { 845 state[n++] = 'W'; 846 state[n] = '\0'; 847 } 848 PRWORD(ovflw, " %-*s", 7, 1, state); 849 PRWORD(ovflw, " %*lX", PTRSTRWIDTH + 1, 1, (u_long)tp->t_session); 850 pgid = 0; 851 if (tp->t_pgrp != NULL) 852 KGET2(&tp->t_pgrp->pg_id, &pgid, sizeof(pid_t), "pgid"); 853 PRWORD(ovflw, " %*d", 6, 1, pgid); 854 KGET2(tp->t_linesw, &t_linesw, sizeof(t_linesw), 855 "line discipline switch table"); 856 name = t_linesw.l_name; 857 (void)putchar(' '); 858 for (;;) { 859 KGET2(name, &buffer, sizeof(buffer), "line discipline name"); 860 if (buffer == '\0') 861 break; 862 (void)putchar(buffer); 863 name++; 864 } 865 (void)putchar('\n'); 866 } 867 868 static const struct flagbit_desc filemode_flags[] = { 869 { FREAD, 'R' }, 870 { FWRITE, 'W' }, 871 { FAPPEND, 'A' }, 872 #ifdef FSHLOCK /* currently gone */ 873 { FSHLOCK, 'S' }, 874 { FEXLOCK, 'X' }, 875 #endif 876 { FASYNC, 'I' }, 877 { 0, '\0' }, 878 }; 879 880 void 881 filemode(void) 882 { 883 struct kinfo_file *ki; 884 char flags[sizeof(filemode_flags) / sizeof(filemode_flags[0])]; 885 char *buf, *offset; 886 int len, maxfile, nfile, ovflw; 887 888 KGET(FNL_MAXFILE, maxfile); 889 if (totalflag) { 890 KGET(FNL_NFILE, nfile); 891 (void)printf("%3d/%3d files\n", nfile, maxfile); 892 return; 893 } 894 if (getfiles(&buf, &len, &offset) == -1) 895 return; 896 /* 897 * Getfiles returns in malloc'd memory to an array of kinfo_file2 898 * structures. 899 */ 900 nfile = len / sizeof(struct kinfo_file); 901 902 (void)printf("%d/%d open files\n", nfile, maxfile); 903 (void)printf("%*s%s%*s TYPE FLG CNT MSG %*s%s%*s IFLG OFFSET\n", 904 (PTRSTRWIDTH - 4) / 2, "", " LOC", (PTRSTRWIDTH - 4) / 2, "", 905 (PTRSTRWIDTH - 4) / 2, "", "DATA", (PTRSTRWIDTH - 4) / 2, ""); 906 for (ki = (struct kinfo_file *)offset; nfile--; ki++) { 907 if ((unsigned)ki->ki_ftype >= sizeof(dtypes) / sizeof(dtypes[0])) 908 continue; 909 ovflw = 0; 910 (void)getflags(filemode_flags, flags, ki->ki_flag); 911 PRWORD(ovflw, "%*lx", PTRSTRWIDTH, 0, (long)ki->ki_fileaddr); 912 PRWORD(ovflw, " %-*s", 9, 1, dtypes[ki->ki_ftype]); 913 PRWORD(ovflw, " %*s", 6, 1, flags); 914 PRWORD(ovflw, " %*d", 5, 1, ki->ki_count); 915 PRWORD(ovflw, " %*d", 5, 1, ki->ki_msgcount); 916 PRWORD(ovflw, " %*lx", PTRSTRWIDTH + 1, 2, (long)ki->ki_fdata); 917 PRWORD(ovflw, " %*x", 5, 1, 0); 918 if ((off_t)ki->ki_foffset < 0) 919 PRWORD(ovflw, " %-*lld\n", PTRSTRWIDTH + 1, 2, 920 (long long)ki->ki_foffset); 921 else 922 PRWORD(ovflw, " %-*lld\n", PTRSTRWIDTH + 1, 2, 923 (long long)ki->ki_foffset); 924 } 925 free(buf); 926 } 927 928 int 929 getfiles(char **abuf, int *alen, char **aoffset) 930 { 931 size_t len; 932 int mib[6]; 933 char *buf; 934 size_t offset; 935 936 /* 937 * XXX 938 * Add emulation of KINFO_FILE here. 939 */ 940 if (memf != NULL) 941 errx(1, "files on dead kernel, not implemented"); 942 943 mib[0] = CTL_KERN; 944 mib[1] = KERN_FILE2; 945 mib[2] = KERN_FILE_BYFILE; 946 mib[3] = 0; 947 mib[4] = sizeof(struct kinfo_file); 948 mib[5] = 0; 949 if (sysctl(mib, 6, NULL, &len, NULL, 0) == -1) { 950 warn("sysctl: KERN_FILE2"); 951 return (-1); 952 } 953 /* We need to align (struct kinfo_file *) in the buffer. */ 954 offset = len % sizeof(off_t); 955 mib[5] = len / sizeof(struct kinfo_file); 956 if ((buf = malloc(len + offset)) == NULL) 957 err(1, "malloc"); 958 if (sysctl(mib, 6, buf + offset, &len, NULL, 0) == -1) { 959 warn("sysctl: 2nd KERN_FILE2"); 960 free(buf); 961 return (-1); 962 } 963 *abuf = buf; 964 *alen = len; 965 *aoffset = (buf + offset); 966 return (0); 967 } 968 969 void 970 usage(void) 971 { 972 973 (void)fprintf(stderr, 974 "usage: %s [-T|-f|-s|-t|-v] [-ghkmn] [-M core] [-N system]\n", 975 getprogname()); 976 exit(1); 977 } 978
Indexes created Wed Sep 24 05:09:52 GMT 2025