pstat.c revision 1.124
1 /* $NetBSD: pstat.c,v 1.124 2014/05/26 20:07:25 dholland 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 1.124 2014/05/26 20:07:25 dholland 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_LAYER, 'Y' }, 392 { VI_ONWORKLST, 'O' }, 393 { 0, '\0' }, 394 }; 395 396 void 397 vnode_header(void) 398 { 399 400 (void)printf("%-*s TYP VFLAG USE HOLD TAG NPAGE", 401 PTRSTRWIDTH, "ADDR"); 402 } 403 404 int 405 vnode_print(struct vnode *avnode, struct vnode *vp) 406 { 407 const char *type; 408 char flags[sizeof(vnode_flags) / sizeof(vnode_flags[0])]; 409 int ovflw; 410 411 /* 412 * set type 413 */ 414 switch (vp->v_type) { 415 case VNON: 416 type = "non"; break; 417 case VREG: 418 type = "reg"; break; 419 case VDIR: 420 type = "dir"; break; 421 case VBLK: 422 type = "blk"; break; 423 case VCHR: 424 type = "chr"; break; 425 case VLNK: 426 type = "lnk"; break; 427 case VSOCK: 428 type = "soc"; break; 429 case VFIFO: 430 type = "fif"; break; 431 case VBAD: 432 type = "bad"; break; 433 default: 434 type = "unk"; break; 435 } 436 /* 437 * gather flags 438 */ 439 (void)getflags(vnode_flags, flags, 440 vp->v_uflag | vp->v_iflag | vp->v_vflag); 441 442 ovflw = 0; 443 PRWORD(ovflw, "%*lx", PTRSTRWIDTH, 0, (long)avnode); 444 PRWORD(ovflw, " %*s", 4, 1, type); 445 PRWORD(ovflw, " %*s", 6, 1, flags); 446 PRWORD(ovflw, " %*ld", 5, 1, (long)vp->v_usecount); 447 PRWORD(ovflw, " %*ld", 5, 1, (long)vp->v_holdcnt); 448 PRWORD(ovflw, " %*d", 4, 1, vp->v_tag); 449 PRWORD(ovflw, " %*d", 6, 1, vp->v_uobj.uo_npages); 450 return (ovflw); 451 } 452 453 const struct flagbit_desc ufs_flags[] = { 454 { IN_ACCESS, 'A' }, 455 { IN_CHANGE, 'C' }, 456 { IN_UPDATE, 'U' }, 457 { IN_MODIFIED, 'M' }, 458 { IN_ACCESSED, 'a' }, 459 { IN_SHLOCK, 'S' }, 460 { IN_EXLOCK, 'E' }, 461 { IN_SPACECOUNTED, 's' }, 462 { 0, '\0' }, 463 }; 464 465 void 466 ufs_header(void) 467 { 468 469 (void)printf(" FILEID IFLAG RDEV|SZ"); 470 } 471 472 int 473 ufs_print(struct vnode *vp, int ovflw) 474 { 475 struct inode inode, *ip = &inode; 476 union dinode { 477 struct ufs1_dinode dp1; 478 struct ufs2_dinode dp2; 479 } dip; 480 struct ufsmount ump; 481 char flags[sizeof(ufs_flags) / sizeof(ufs_flags[0])]; 482 char dev[4 + 1 + 7 + 1]; /* 12bit marjor + 20bit minor */ 483 char *name; 484 mode_t type; 485 dev_t rdev; 486 487 KGETRET(VTOI(vp), &inode, sizeof(struct inode), "vnode's inode"); 488 KGETRET(ip->i_ump, &ump, sizeof(struct ufsmount), 489 "vnode's mount point"); 490 491 if (ump.um_fstype == UFS1) { 492 KGETRET(ip->i_din.ffs1_din, &dip, sizeof (struct ufs1_dinode), 493 "inode's dinode"); 494 rdev = (uint32_t)dip.dp1.di_rdev; 495 } else { 496 KGETRET(ip->i_din.ffs2_din, &dip, sizeof (struct ufs2_dinode), 497 "inode's UFS2 dinode"); 498 rdev = dip.dp2.di_rdev; 499 } 500 501 /* 502 * XXX need to to locking state. 503 */ 504 505 (void)getflags(ufs_flags, flags, ip->i_flag); 506 PRWORD(ovflw, " %*llu", 7, 1, (unsigned long long)ip->i_number); 507 PRWORD(ovflw, " %*s", 6, 1, flags); 508 type = ip->i_mode & S_IFMT; 509 if (S_ISCHR(ip->i_mode) || S_ISBLK(ip->i_mode)) { 510 if (usenumflag || 511 (name = devname(rdev, type)) == NULL) { 512 devprintf(dev, sizeof(dev), rdev); 513 name = dev; 514 } 515 PRWORD(ovflw, " %*s", 8, 1, name); 516 } else 517 PRWORD(ovflw, " %*lld", 8, 1, (long long)ip->i_size); 518 return 0; 519 } 520 521 int 522 ext2fs_print(struct vnode *vp, int ovflw) 523 { 524 struct inode inode, *ip = &inode; 525 struct ext2fs_dinode dip; 526 char flags[sizeof(ufs_flags) / sizeof(ufs_flags[0])]; 527 char dev[4 + 1 + 7 + 1]; /* 12bit marjor + 20bit minor */ 528 char *name; 529 mode_t type; 530 531 KGETRET(VTOI(vp), &inode, sizeof(struct inode), "vnode's inode"); 532 KGETRET(ip->i_din.e2fs_din, &dip, sizeof (struct ext2fs_dinode), 533 "inode's dinode"); 534 535 /* 536 * XXX need to to locking state. 537 */ 538 539 (void)getflags(ufs_flags, flags, ip->i_flag); 540 PRWORD(ovflw, " %*llu", 7, 1, (unsigned long long)ip->i_number); 541 PRWORD(ovflw, " %*s", 6, 1, flags); 542 type = dip.e2di_mode & S_IFMT; 543 if (S_ISCHR(dip.e2di_mode) || S_ISBLK(dip.e2di_mode)) { 544 if (usenumflag || 545 (name = devname(dip.e2di_rdev, type)) == NULL) { 546 devprintf(dev, sizeof(dev), dip.e2di_rdev); 547 name = dev; 548 } 549 PRWORD(ovflw, " %*s", 8, 1, name); 550 } else 551 PRWORD(ovflw, " %*u", 8, 1, (u_int)dip.e2di_size); 552 return (0); 553 } 554 555 const struct flagbit_desc nfs_flags[] = { 556 { NFLUSHWANT, 'W' }, 557 { NFLUSHINPROG, 'P' }, 558 { NMODIFIED, 'M' }, 559 { NWRITEERR, 'E' }, 560 { NACC, 'A' }, 561 { NUPD, 'U' }, 562 { NCHG, 'C' }, 563 { 0, '\0' }, 564 }; 565 566 void 567 nfs_header(void) 568 { 569 570 (void)printf(" FILEID NFLAG RDEV|SZ"); 571 } 572 573 int 574 nfs_print(struct vnode *vp, int ovflw) 575 { 576 struct nfsnode nfsnode, *np = &nfsnode; 577 char flags[sizeof(nfs_flags) / sizeof(nfs_flags[0])]; 578 char dev[4 + 1 + 7 + 1]; /* 12bit marjor + 20bit minor */ 579 struct vattr va; 580 char *name; 581 mode_t type; 582 583 KGETRET(VTONFS(vp), &nfsnode, sizeof(nfsnode), "vnode's nfsnode"); 584 (void)getflags(nfs_flags, flags, np->n_flag); 585 586 KGETRET(np->n_vattr, &va, sizeof(va), "vnode attr"); 587 PRWORD(ovflw, " %*ld", 7, 1, (long)va.va_fileid); 588 PRWORD(ovflw, " %*s", 6, 1, flags); 589 switch (va.va_type) { 590 case VCHR: 591 type = S_IFCHR; 592 goto device; 593 594 case VBLK: 595 type = S_IFBLK; 596 device: 597 if (usenumflag || (name = devname(va.va_rdev, type)) == NULL) { 598 devprintf(dev, sizeof(dev), va.va_rdev); 599 name = dev; 600 } 601 PRWORD(ovflw, " %*s", 8, 1, name); 602 break; 603 default: 604 PRWORD(ovflw, " %*lld", 8, 1, (long long)np->n_size); 605 break; 606 } 607 return (0); 608 } 609 610 void 611 layer_header(void) 612 { 613 614 (void)printf(" %*s", PTRSTRWIDTH, "LOWER"); 615 } 616 617 int 618 layer_print(struct vnode *vp, int ovflw) 619 { 620 struct layer_node lnode, *lp = &lnode; 621 622 KGETRET(VTOLAYER(vp), &lnode, sizeof(lnode), "layer vnode"); 623 624 PRWORD(ovflw, " %*lx", PTRSTRWIDTH + 1, 1, (long)lp->layer_lowervp); 625 return (0); 626 } 627 628 /* 629 * Given a pointer to a mount structure in kernel space, 630 * read it in and return a usable pointer to it. 631 */ 632 struct mount * 633 getmnt(struct mount *maddr) 634 { 635 static struct mtab { 636 struct mtab *next; 637 struct mount *maddr; 638 struct mount mount; 639 } *mhead = NULL; 640 struct mtab *mt; 641 struct mount mb; 642 643 for (mt = mhead; mt != NULL; mt = mt->next) 644 if (maddr == mt->maddr) 645 return (&mt->mount); 646 KGETRET(maddr, &mb, sizeof(struct mount), "mount table"); 647 if ((mt = malloc(sizeof(struct mtab))) == NULL) 648 err(1, "malloc"); 649 mt->mount = mb; 650 mt->maddr = maddr; 651 mt->next = mhead; 652 mhead = mt; 653 return (&mt->mount); 654 } 655 656 void 657 mount_print(struct mount *mp) 658 { 659 int flags; 660 661 (void)printf("*** MOUNT %s %s on %s", ST.f_fstypename, 662 ST.f_mntfromname, ST.f_mntonname); 663 if ((flags = mp->mnt_flag) != 0) { 664 size_t i; 665 const char *sep = " ("; 666 667 for (i = 0; i < sizeof mnt_flags / sizeof mnt_flags[0]; i++) { 668 if (flags & mnt_flags[i].m_flag) { 669 (void)printf("%s%s", sep, mnt_flags[i].m_name); 670 flags &= ~mnt_flags[i].m_flag; 671 sep = ","; 672 } 673 } 674 if (flags) 675 (void)printf("%sunknown_flags:%x", sep, flags); 676 (void)printf(")"); 677 } 678 (void)printf("\n"); 679 } 680 681 char * 682 loadvnodes(int *avnodes) 683 { 684 int mib[2]; 685 int status; 686 size_t copysize; 687 #if 0 688 size_t oldsize; 689 #endif 690 char *vnodebase; 691 692 if (totalflag) { 693 KGET(V_NUMV, *avnodes); 694 return NULL; 695 } 696 if (memf != NULL) { 697 /* 698 * do it by hand 699 */ 700 return (kinfo_vnodes(avnodes)); 701 } 702 mib[0] = CTL_KERN; 703 mib[1] = KERN_VNODE; 704 /* 705 * First sysctl call gets the necessary buffer size; second 706 * sysctl call gets the data. We allow for some growth in the 707 * data size between the two sysctl calls (increases of a few 708 * thousand vnodes in between the two calls have been observed). 709 * We ignore ENOMEM from the second sysctl call, which can 710 * happen if the kernel's data grew by even more than we allowed 711 * for. 712 */ 713 if (sysctl(mib, 2, NULL, ©size, NULL, 0) == -1) 714 err(1, "sysctl: KERN_VNODE"); 715 #if 0 716 oldsize = copysize; 717 #endif 718 copysize += 100 * sizeof(struct vnode) + copysize / 20; 719 if ((vnodebase = malloc(copysize)) == NULL) 720 err(1, "malloc"); 721 status = sysctl(mib, 2, vnodebase, ©size, NULL, 0); 722 if (status == -1 && errno != ENOMEM) 723 err(1, "sysctl: KERN_VNODE"); 724 #if 0 /* for debugging the amount of growth allowed for */ 725 if (copysize != oldsize) { 726 warnx("count changed from %ld to %ld (%+ld)%s", 727 (long)(oldsize / sizeof(struct vnode)), 728 (long)(copysize / sizeof(struct vnode)), 729 (long)(copysize / sizeof(struct vnode)) - 730 (long)(oldsize / sizeof(struct vnode)), 731 (status == 0 ? "" : ", and errno = ENOMEM")); 732 } 733 #endif 734 if (copysize % (VPTRSZ + VNODESZ)) 735 errx(1, "vnode size mismatch"); 736 *avnodes = copysize / (VPTRSZ + VNODESZ); 737 738 return (vnodebase); 739 } 740 741 /* 742 * simulate what a running kernel does in in kinfo_vnode 743 */ 744 char * 745 kinfo_vnodes(int *avnodes) 746 { 747 struct mntlist mlist; 748 struct mount *mp, mount; 749 struct vnode *vp, vnode; 750 char *beg, *bp, *ep; 751 int numvnodes; 752 753 KGET(V_NUMV, numvnodes); 754 if ((bp = malloc((numvnodes + 20) * (VPTRSZ + VNODESZ))) == NULL) 755 err(1, "malloc"); 756 beg = bp; 757 ep = bp + (numvnodes + 20) * (VPTRSZ + VNODESZ); 758 KGET(V_MOUNTLIST, mlist); 759 TAILQ_FOREACH(mp, &mlist, mnt_list) { 760 KGET2(mp, &mount, sizeof(mount), "mount entry"); 761 TAILQ_FOREACH(vp, &mount.mnt_vnodelist, v_mntvnodes) { 762 KGET2(vp, &vnode, sizeof(vnode), "vnode"); 763 if (bp + VPTRSZ + VNODESZ > ep) 764 /* XXX - should realloc */ 765 errx(1, "no more room for vnodes"); 766 memmove(bp, &vp, VPTRSZ); 767 bp += VPTRSZ; 768 memmove(bp, &vnode, VNODESZ); 769 bp += VNODESZ; 770 } 771 } 772 *avnodes = (bp - beg) / (VPTRSZ + VNODESZ); 773 return (beg); 774 } 775 776 void 777 ttymode(void) 778 { 779 int ntty; 780 struct ttylist_head tty_head; 781 struct tty *tp, tty; 782 783 KGET(TTY_NTTY, ntty); 784 (void)printf("%d terminal device%s\n", ntty, ntty == 1 ? "" : "s"); 785 KGET(TTY_TTYLIST, tty_head); 786 (void)printf( 787 " LINE RAW CAN OUT HWT LWT COL STATE %-*s PGID DISC\n", 788 PTRSTRWIDTH, "SESS"); 789 for (tp = tty_head.tqh_first; tp; tp = tty.tty_link.tqe_next) { 790 KGET2(tp, &tty, sizeof tty, "tty struct"); 791 ttyprt(&tty); 792 } 793 } 794 795 static const struct flagbit_desc ttystates[] = { 796 { TS_ISOPEN, 'O'}, 797 { TS_DIALOUT, '>'}, 798 { TS_CARR_ON, 'C'}, 799 { TS_TIMEOUT, 'T'}, 800 { TS_FLUSH, 'F'}, 801 { TS_BUSY, 'B'}, 802 { TS_XCLUDE, 'X'}, 803 { TS_TTSTOP, 'S'}, 804 { TS_TBLOCK, 'K'}, 805 { TS_ASYNC, 'Y'}, 806 { TS_BKSL, 'D'}, 807 { TS_ERASE, 'E'}, 808 { TS_LNCH, 'L'}, 809 { TS_TYPEN, 'P'}, 810 { TS_CNTTB, 'N'}, 811 { 0, '\0'}, 812 }; 813 814 void 815 ttyprt(struct tty *tp) 816 { 817 char state[sizeof(ttystates) / sizeof(ttystates[0]) + 1]; 818 char dev[2 + 3 + 1 + 5 + 1]; /* 12bit major + 20bit minor */ 819 struct linesw t_linesw; 820 const char *name; 821 char buffer; 822 pid_t pgid; 823 int n, ovflw; 824 825 if (usenumflag || (name = devname(tp->t_dev, S_IFCHR)) == NULL) { 826 devprintf(dev, sizeof(dev), tp->t_dev); 827 name = dev; 828 } 829 ovflw = 0; 830 PRWORD(ovflw, "%-*s", 7, 0, name); 831 PRWORD(ovflw, " %*d", 3, 1, tp->t_rawq.c_cc); 832 PRWORD(ovflw, " %*d", 4, 1, tp->t_canq.c_cc); 833 PRWORD(ovflw, " %*d", 4, 1, tp->t_outq.c_cc); 834 PRWORD(ovflw, " %*d", 5, 1, tp->t_hiwat); 835 PRWORD(ovflw, " %*d", 4, 1, tp->t_lowat); 836 PRWORD(ovflw, " %*d", 8, 1, tp->t_column); 837 n = getflags(ttystates, state, tp->t_state); 838 if (tp->t_wopen) { 839 state[n++] = 'W'; 840 state[n] = '\0'; 841 } 842 PRWORD(ovflw, " %-*s", 7, 1, state); 843 PRWORD(ovflw, " %*lX", PTRSTRWIDTH + 1, 1, (u_long)tp->t_session); 844 pgid = 0; 845 if (tp->t_pgrp != NULL) 846 KGET2(&tp->t_pgrp->pg_id, &pgid, sizeof(pid_t), "pgid"); 847 PRWORD(ovflw, " %*d", 6, 1, pgid); 848 KGET2(tp->t_linesw, &t_linesw, sizeof(t_linesw), 849 "line discipline switch table"); 850 name = t_linesw.l_name; 851 (void)putchar(' '); 852 for (;;) { 853 KGET2(name, &buffer, sizeof(buffer), "line discipline name"); 854 if (buffer == '\0') 855 break; 856 (void)putchar(buffer); 857 name++; 858 } 859 (void)putchar('\n'); 860 } 861 862 static const struct flagbit_desc filemode_flags[] = { 863 { FREAD, 'R' }, 864 { FWRITE, 'W' }, 865 { FAPPEND, 'A' }, 866 #ifdef FSHLOCK /* currently gone */ 867 { FSHLOCK, 'S' }, 868 { FEXLOCK, 'X' }, 869 #endif 870 { FASYNC, 'I' }, 871 { 0, '\0' }, 872 }; 873 874 void 875 filemode(void) 876 { 877 struct kinfo_file *ki; 878 char flags[sizeof(filemode_flags) / sizeof(filemode_flags[0])]; 879 char *buf, *offset; 880 int len, maxfile, nfile, ovflw; 881 882 KGET(FNL_MAXFILE, maxfile); 883 if (totalflag) { 884 KGET(FNL_NFILE, nfile); 885 (void)printf("%3d/%3d files\n", nfile, maxfile); 886 return; 887 } 888 if (getfiles(&buf, &len, &offset) == -1) 889 return; 890 /* 891 * Getfiles returns in malloc'd memory to an array of kinfo_file2 892 * structures. 893 */ 894 nfile = len / sizeof(struct kinfo_file); 895 896 (void)printf("%d/%d open files\n", nfile, maxfile); 897 (void)printf("%*s%s%*s TYPE FLG CNT MSG %*s%s%*s IFLG OFFSET\n", 898 (PTRSTRWIDTH - 4) / 2, "", " LOC", (PTRSTRWIDTH - 4) / 2, "", 899 (PTRSTRWIDTH - 4) / 2, "", "DATA", (PTRSTRWIDTH - 4) / 2, ""); 900 for (ki = (struct kinfo_file *)offset; nfile--; ki++) { 901 if ((unsigned)ki->ki_ftype >= sizeof(dtypes) / sizeof(dtypes[0])) 902 continue; 903 ovflw = 0; 904 (void)getflags(filemode_flags, flags, ki->ki_flag); 905 PRWORD(ovflw, "%*lx", PTRSTRWIDTH, 0, (long)ki->ki_fileaddr); 906 PRWORD(ovflw, " %-*s", 9, 1, dtypes[ki->ki_ftype]); 907 PRWORD(ovflw, " %*s", 6, 1, flags); 908 PRWORD(ovflw, " %*d", 5, 1, ki->ki_count); 909 PRWORD(ovflw, " %*d", 5, 1, ki->ki_msgcount); 910 PRWORD(ovflw, " %*lx", PTRSTRWIDTH + 1, 2, (long)ki->ki_fdata); 911 PRWORD(ovflw, " %*x", 5, 1, 0); 912 if ((off_t)ki->ki_foffset < 0) 913 PRWORD(ovflw, " %-*lld\n", PTRSTRWIDTH + 1, 2, 914 (long long)ki->ki_foffset); 915 else 916 PRWORD(ovflw, " %-*lld\n", PTRSTRWIDTH + 1, 2, 917 (long long)ki->ki_foffset); 918 } 919 free(buf); 920 } 921 922 int 923 getfiles(char **abuf, int *alen, char **aoffset) 924 { 925 size_t len; 926 int mib[6]; 927 char *buf; 928 size_t offset; 929 930 /* 931 * XXX 932 * Add emulation of KINFO_FILE here. 933 */ 934 if (memf != NULL) 935 errx(1, "files on dead kernel, not implemented"); 936 937 mib[0] = CTL_KERN; 938 mib[1] = KERN_FILE2; 939 mib[2] = KERN_FILE_BYFILE; 940 mib[3] = 0; 941 mib[4] = sizeof(struct kinfo_file); 942 mib[5] = 0; 943 if (sysctl(mib, 6, NULL, &len, NULL, 0) == -1) { 944 warn("sysctl: KERN_FILE2"); 945 return (-1); 946 } 947 /* We need to align (struct kinfo_file *) in the buffer. */ 948 offset = len % sizeof(off_t); 949 mib[5] = len / sizeof(struct kinfo_file); 950 if ((buf = malloc(len + offset)) == NULL) 951 err(1, "malloc"); 952 if (sysctl(mib, 6, buf + offset, &len, NULL, 0) == -1) { 953 warn("sysctl: 2nd KERN_FILE2"); 954 free(buf); 955 return (-1); 956 } 957 *abuf = buf; 958 *alen = len; 959 *aoffset = (buf + offset); 960 return (0); 961 } 962 963 void 964 usage(void) 965 { 966 967 (void)fprintf(stderr, 968 "usage: %s [-T|-f|-s|-t|-v] [-ghkmn] [-M core] [-N system]\n", 969 getprogname()); 970 exit(1); 971 } 972
Indexes created Tue Sep 23 02:09:52 GMT 2025