pstat.c revision 1.102
1 /* $NetBSD: pstat.c,v 1.102 2007/10/20 01:38:45 briggs 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 1.102 2007/10/20 01:38:45 briggs 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 <sys/namei.h> 59 #include <miscfs/genfs/layer.h> 60 #include <miscfs/union/union.h> 61 #undef _KERNEL 62 #include <sys/stat.h> 63 #include <nfs/nfsproto.h> 64 #include <nfs/rpcv2.h> 65 #include <nfs/nfs.h> 66 #include <nfs/nfsnode.h> 67 #include <sys/ioctl.h> 68 #include <sys/tty.h> 69 #include <sys/conf.h> 70 #include <sys/device.h> 71 72 #include <sys/sysctl.h> 73 74 #include <err.h> 75 #include <kvm.h> 76 #include <limits.h> 77 #include <nlist.h> 78 #include <stdio.h> 79 #include <stdlib.h> 80 #include <string.h> 81 #include <unistd.h> 82 83 #include "swapctl.h" 84 85 struct nlist nl[] = { 86 #define V_MOUNTLIST 0 87 { "_mountlist" }, /* address of head of mount list. */ 88 #define V_NUMV 1 89 { "_numvnodes" }, 90 #define FNL_NFILE 2 91 { "_nfiles" }, 92 #define FNL_MAXFILE 3 93 { "_maxfiles" }, 94 #define TTY_NTTY 4 95 { "_tty_count" }, 96 #define TTY_TTYLIST 5 97 { "_ttylist" }, 98 #define NLMANDATORY TTY_TTYLIST /* names up to here are mandatory */ 99 { "" } 100 }; 101 102 int usenumflag; 103 int totalflag; 104 int kflag; 105 int hflag; 106 char *nlistf = NULL; 107 char *memf = NULL; 108 kvm_t *kd; 109 110 static const char * const dtypes[] = { DTYPE_NAMES }; 111 112 113 static const struct { 114 u_int m_flag; 115 u_int m_visible; 116 const char *m_name; 117 } mnt_flags[] = { 118 __MNT_FLAGS 119 }; 120 121 struct flagbit_desc { 122 u_int fd_flags; 123 char fd_mark; 124 }; 125 126 #define SVAR(var) __STRING(var) /* to force expansion */ 127 #define KGET(idx, var) \ 128 KGET1(idx, &var, sizeof(var), SVAR(var)) 129 #define KGET1(idx, p, s, msg) \ 130 KGET2(nl[idx].n_value, p, s, msg) 131 #define KGET2(addr, p, s, msg) do { \ 132 if (kvm_read(kd, (u_long)(addr), p, s) != s) \ 133 warnx("cannot read %s: %s", msg, kvm_geterr(kd)); \ 134 } while (/* CONSTCOND */0) 135 #define KGETRET(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 return (0); \ 139 } \ 140 } while (/* CONSTCOND */0) 141 142 #if 1 /* This is copied from vmstat/vmstat.c */ 143 /* 144 * Print single word. `ovflow' is number of characters didn't fit 145 * on the last word. `fmt' is a format string to print this word. 146 * It must contain asterisk for field width. `width' is a width 147 * occupied by this word. `fixed' is a number of constant chars in 148 * `fmt'. `val' is a value to be printed using format string `fmt'. 149 */ 150 #define PRWORD(ovflw, fmt, width, fixed, val) do { \ 151 (ovflw) += printf((fmt), \ 152 (width) - (fixed) - (ovflw) > 0 ? \ 153 (width) - (fixed) - (ovflw) : 0, \ 154 (val)) - (width); \ 155 if ((ovflw) < 0) \ 156 (ovflw) = 0; \ 157 } while (/* CONSTCOND */0) 158 #endif 159 160 void filemode(void); 161 int getfiles(char **, int *, char **); 162 int getflags(const struct flagbit_desc *, char *, u_int); 163 struct mount * 164 getmnt(struct mount *); 165 char * kinfo_vnodes(int *); 166 void layer_header(void); 167 int layer_print(struct vnode *, int); 168 char * loadvnodes(int *); 169 int main(int, char **); 170 void mount_print(struct mount *); 171 void nfs_header(void); 172 int nfs_print(struct vnode *, int); 173 void ttymode(void); 174 void ttyprt(struct tty *); 175 void ufs_header(void); 176 int ufs_print(struct vnode *, int); 177 int ext2fs_print(struct vnode *, int); 178 void union_header(void); 179 int union_print(struct vnode *, int); 180 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 void 291 vnodemode(void) 292 { 293 char *e_vnodebase, *endvnode, *evp; 294 struct vnode *vp; 295 struct mount *maddr, *mp; 296 int numvnodes, ovflw; 297 int (*vnode_fsprint) (struct vnode *, int); /* per-fs data printer */ 298 299 mp = NULL; 300 e_vnodebase = loadvnodes(&numvnodes); 301 if (totalflag) { 302 (void)printf("%7d vnodes\n", numvnodes); 303 goto out; 304 } 305 endvnode = e_vnodebase + numvnodes * (VPTRSZ + VNODESZ); 306 (void)printf("%d active vnodes\n", numvnodes); 307 308 #define ST mp->mnt_stat 309 #define FSTYPE_IS(mp, name) \ 310 (strncmp((mp)->mnt_stat.f_fstypename, (name), \ 311 sizeof((mp)->mnt_stat.f_fstypename)) == 0) 312 maddr = NULL; 313 vnode_fsprint = NULL; 314 for (evp = e_vnodebase; evp < endvnode; evp += VPTRSZ + VNODESZ) { 315 vp = (struct vnode *)(evp + VPTRSZ); 316 if (vp->v_mount != maddr) { 317 /* 318 * New filesystem 319 */ 320 if ((mp = getmnt(vp->v_mount)) == NULL) 321 continue; 322 maddr = vp->v_mount; 323 mount_print(mp); 324 vnode_header(); 325 if (FSTYPE_IS(mp, MOUNT_FFS) || 326 FSTYPE_IS(mp, MOUNT_MFS)) { 327 ufs_header(); 328 vnode_fsprint = ufs_print; 329 } else if (FSTYPE_IS(mp, MOUNT_NFS)) { 330 nfs_header(); 331 vnode_fsprint = nfs_print; 332 } else if (FSTYPE_IS(mp, MOUNT_EXT2FS)) { 333 ufs_header(); 334 vnode_fsprint = ext2fs_print; 335 } else if (FSTYPE_IS(mp, MOUNT_NULL) || 336 FSTYPE_IS(mp, MOUNT_OVERLAY) || 337 FSTYPE_IS(mp, MOUNT_UMAP)) { 338 layer_header(); 339 vnode_fsprint = layer_print; 340 } else if (FSTYPE_IS(mp, MOUNT_UNION)) { 341 union_header(); 342 vnode_fsprint = union_print; 343 } else 344 vnode_fsprint = NULL; 345 (void)printf("\n"); 346 } 347 ovflw = vnode_print(*(struct vnode **)evp, vp); 348 if (VTOI(vp) != NULL && vnode_fsprint != NULL) 349 (*vnode_fsprint)(vp, ovflw); 350 (void)printf("\n"); 351 } 352 353 out: 354 if (e_vnodebase) 355 free(e_vnodebase); 356 } 357 358 int 359 getflags(const struct flagbit_desc *fd, char *p, u_int flags) 360 { 361 char *q = p; 362 363 if (flags == 0) { 364 *p++ = '-'; 365 *p = '\0'; 366 return (0); 367 } 368 369 for (; fd->fd_flags != 0; fd++) 370 if ((flags & fd->fd_flags) != 0) 371 *p++ = fd->fd_mark; 372 *p = '\0'; 373 return (p - q); 374 } 375 376 const struct flagbit_desc vnode_flags[] = { 377 { VV_ROOT, 'R' }, 378 { VI_TEXT, 'T' }, 379 { VV_SYSTEM, 'S' }, 380 { VV_ISTTY, 'I' }, 381 { VI_EXECMAP, 'E' }, 382 { VI_XLOCK, 'L' }, 383 { VI_XWANT, 'W' }, 384 { VI_ALIASED, 'A' }, 385 { VU_DIROP, 'D' }, 386 { VI_LAYER, 'Y' }, 387 { VI_ONWORKLST, 'O' }, 388 { 0, '\0' }, 389 }; 390 391 void 392 vnode_header(void) 393 { 394 395 (void)printf("%-*s TYP VFLAG USE HOLD TAG NPAGE", 396 PTRSTRWIDTH, "ADDR"); 397 } 398 399 int 400 vnode_print(struct vnode *avnode, struct vnode *vp) 401 { 402 char *type, flags[sizeof(vnode_flags) / sizeof(vnode_flags[0])]; 403 int ovflw; 404 405 /* 406 * set type 407 */ 408 switch (vp->v_type) { 409 case VNON: 410 type = "non"; break; 411 case VREG: 412 type = "reg"; break; 413 case VDIR: 414 type = "dir"; break; 415 case VBLK: 416 type = "blk"; break; 417 case VCHR: 418 type = "chr"; break; 419 case VLNK: 420 type = "lnk"; break; 421 case VSOCK: 422 type = "soc"; break; 423 case VFIFO: 424 type = "fif"; break; 425 case VBAD: 426 type = "bad"; break; 427 default: 428 type = "unk"; break; 429 } 430 /* 431 * gather flags 432 */ 433 (void)getflags(vnode_flags, flags, 434 vp->v_uflag | vp->v_iflag | vp->v_vflag); 435 436 ovflw = 0; 437 PRWORD(ovflw, "%*lx", PTRSTRWIDTH, 0, (long)avnode); 438 PRWORD(ovflw, " %*s", 4, 1, type); 439 PRWORD(ovflw, " %*s", 6, 1, flags); 440 PRWORD(ovflw, " %*ld", 5, 1, (long)vp->v_usecount); 441 PRWORD(ovflw, " %*ld", 5, 1, (long)vp->v_holdcnt); 442 PRWORD(ovflw, " %*d", 4, 1, vp->v_tag); 443 PRWORD(ovflw, " %*d", 6, 1, vp->v_uobj.uo_npages); 444 return (ovflw); 445 } 446 447 const struct flagbit_desc ufs_flags[] = { 448 { IN_ACCESS, 'A' }, 449 { IN_CHANGE, 'C' }, 450 { IN_UPDATE, 'U' }, 451 { IN_MODIFIED, 'M' }, 452 { IN_ACCESSED, 'a' }, 453 { IN_RENAME, 'R' }, 454 { IN_SHLOCK, 'S' }, 455 { IN_EXLOCK, 'E' }, 456 { IN_CLEANING, 'c' }, 457 { IN_ADIROP, 'D' }, 458 { IN_SPACECOUNTED, 's' }, 459 { 0, '\0' }, 460 }; 461 462 void 463 ufs_header(void) 464 { 465 466 (void)printf(" FILEID IFLAG RDEV|SZ"); 467 } 468 469 int 470 ufs_print(struct vnode *vp, int ovflw) 471 { 472 struct inode inode, *ip = &inode; 473 union dinode { 474 struct ufs1_dinode dp1; 475 struct ufs2_dinode dp2; 476 } dip; 477 char flags[sizeof(ufs_flags) / sizeof(ufs_flags[0])]; 478 char dev[4 + 1 + 7 + 1]; /* 12bit marjor + 20bit minor */ 479 char *name; 480 mode_t type; 481 dev_t rdev; 482 483 KGETRET(VTOI(vp), &inode, sizeof(struct inode), "vnode's inode"); 484 KGETRET(ip->i_din.ffs1_din, &dip, sizeof (struct ufs1_dinode), 485 "inode's dinode"); 486 487 if (ip->i_size == dip.dp1.di_size) 488 rdev = dip.dp1.di_rdev; 489 else { 490 KGETRET(ip->i_din.ffs1_din, &dip, sizeof (struct ufs2_dinode), 491 "inode's UFS2 dinode"); 492 rdev = dip.dp2.di_rdev; 493 } 494 495 /* 496 * XXX need to to locking state. 497 */ 498 499 (void)getflags(ufs_flags, flags, ip->i_flag); 500 PRWORD(ovflw, " %*llu", 7, 1, (unsigned long long)ip->i_number); 501 PRWORD(ovflw, " %*s", 6, 1, flags); 502 type = ip->i_mode & S_IFMT; 503 if (S_ISCHR(ip->i_mode) || S_ISBLK(ip->i_mode)) { 504 if (usenumflag || 505 (name = devname(rdev, type)) == NULL) { 506 snprintf(dev, sizeof(dev), "%d,%d", 507 major(rdev), minor(rdev)); 508 name = dev; 509 } 510 PRWORD(ovflw, " %*s", 8, 1, name); 511 } else 512 PRWORD(ovflw, " %*lld", 8, 1, (long long)ip->i_size); 513 return 0; 514 } 515 516 int 517 ext2fs_print(struct vnode *vp, int ovflw) 518 { 519 struct inode inode, *ip = &inode; 520 struct ext2fs_dinode dip; 521 char flags[sizeof(ufs_flags) / sizeof(ufs_flags[0])]; 522 char dev[4 + 1 + 7 + 1]; /* 12bit marjor + 20bit minor */ 523 char *name; 524 mode_t type; 525 526 KGETRET(VTOI(vp), &inode, sizeof(struct inode), "vnode's inode"); 527 KGETRET(ip->i_din.e2fs_din, &dip, sizeof (struct ext2fs_dinode), 528 "inode's dinode"); 529 530 /* 531 * XXX need to to locking state. 532 */ 533 534 (void)getflags(ufs_flags, flags, ip->i_flag); 535 PRWORD(ovflw, " %*llu", 7, 1, (unsigned long long)ip->i_number); 536 PRWORD(ovflw, " %*s", 6, 1, flags); 537 type = dip.e2di_mode & S_IFMT; 538 if (S_ISCHR(dip.e2di_mode) || S_ISBLK(dip.e2di_mode)) { 539 if (usenumflag || 540 (name = devname(dip.e2di_rdev, type)) == NULL) { 541 snprintf(dev, sizeof(dev), "%d,%d", 542 major(dip.e2di_rdev), minor(dip.e2di_rdev)); 543 name = dev; 544 } 545 PRWORD(ovflw, " %*s", 8, 1, name); 546 } else 547 PRWORD(ovflw, " %*u", 8, 1, (u_int)dip.e2di_size); 548 return (0); 549 } 550 551 const struct flagbit_desc nfs_flags[] = { 552 { NFLUSHWANT, 'W' }, 553 { NFLUSHINPROG, 'P' }, 554 { NMODIFIED, 'M' }, 555 { NWRITEERR, 'E' }, 556 { NACC, 'A' }, 557 { NUPD, 'U' }, 558 { NCHG, 'C' }, 559 { 0, '\0' }, 560 }; 561 562 void 563 nfs_header(void) 564 { 565 566 (void)printf(" FILEID NFLAG RDEV|SZ"); 567 } 568 569 int 570 nfs_print(struct vnode *vp, int ovflw) 571 { 572 struct nfsnode nfsnode, *np = &nfsnode; 573 char flags[sizeof(nfs_flags) / sizeof(nfs_flags[0])]; 574 char dev[4 + 1 + 7 + 1]; /* 12bit marjor + 20bit minor */ 575 struct vattr va; 576 char *name; 577 mode_t type; 578 579 KGETRET(VTONFS(vp), &nfsnode, sizeof(nfsnode), "vnode's nfsnode"); 580 (void)getflags(nfs_flags, flags, np->n_flag); 581 582 KGETRET(np->n_vattr, &va, sizeof(va), "vnode attr"); 583 PRWORD(ovflw, " %*ld", 7, 1, (long)va.va_fileid); 584 PRWORD(ovflw, " %*s", 6, 1, flags); 585 switch (va.va_type) { 586 case VCHR: 587 type = S_IFCHR; 588 goto device; 589 590 case VBLK: 591 type = S_IFBLK; 592 device: 593 if (usenumflag || (name = devname(va.va_rdev, type)) == NULL) { 594 (void)snprintf(dev, sizeof(dev), "%d,%d", 595 major(va.va_rdev), minor(va.va_rdev)); 596 name = dev; 597 } 598 PRWORD(ovflw, " %*s", 8, 1, name); 599 break; 600 default: 601 PRWORD(ovflw, " %*lld", 8, 1, (long long)np->n_size); 602 break; 603 } 604 return (0); 605 } 606 607 void 608 layer_header(void) 609 { 610 611 (void)printf(" %*s", PTRSTRWIDTH, "LOWER"); 612 } 613 614 int 615 layer_print(struct vnode *vp, int ovflw) 616 { 617 struct layer_node lnode, *lp = &lnode; 618 619 KGETRET(VTOLAYER(vp), &lnode, sizeof(lnode), "layer vnode"); 620 621 PRWORD(ovflw, " %*lx", PTRSTRWIDTH + 1, 1, (long)lp->layer_lowervp); 622 return (0); 623 } 624 625 void 626 union_header(void) 627 { 628 629 (void)printf(" %*s %*s", PTRSTRWIDTH, "UPPER", PTRSTRWIDTH, "LOWER"); 630 } 631 632 int 633 union_print(struct vnode *vp, int ovflw) 634 { 635 struct union_node unode, *up = &unode; 636 637 KGETRET(VTOUNION(vp), &unode, sizeof(unode), "vnode's unode"); 638 639 PRWORD(ovflw, " %*lx", PTRSTRWIDTH + 1, 1, (long)up->un_uppervp); 640 PRWORD(ovflw, " %*lx", PTRSTRWIDTH + 1, 1, (long)up->un_lowervp); 641 return (0); 642 } 643 644 /* 645 * Given a pointer to a mount structure in kernel space, 646 * read it in and return a usable pointer to it. 647 */ 648 struct mount * 649 getmnt(struct mount *maddr) 650 { 651 static struct mtab { 652 struct mtab *next; 653 struct mount *maddr; 654 struct mount mount; 655 } *mhead = NULL; 656 struct mtab *mt; 657 struct mount mb; 658 659 for (mt = mhead; mt != NULL; mt = mt->next) 660 if (maddr == mt->maddr) 661 return (&mt->mount); 662 KGETRET(maddr, &mb, sizeof(struct mount), "mount table"); 663 if ((mt = malloc(sizeof(struct mtab))) == NULL) 664 err(1, "malloc"); 665 mt->mount = mb; 666 mt->maddr = maddr; 667 mt->next = mhead; 668 mhead = mt; 669 return (&mt->mount); 670 } 671 672 void 673 mount_print(struct mount *mp) 674 { 675 int flags; 676 677 (void)printf("*** MOUNT %s %s on %s", ST.f_fstypename, 678 ST.f_mntfromname, ST.f_mntonname); 679 if ((flags = mp->mnt_flag) != 0) { 680 int i; 681 const char *sep = " ("; 682 683 for (i = 0; i < sizeof mnt_flags / sizeof mnt_flags[0]; i++) { 684 if (flags & mnt_flags[i].m_flag) { 685 (void)printf("%s%s", sep, mnt_flags[i].m_name); 686 flags &= ~mnt_flags[i].m_flag; 687 sep = ","; 688 } 689 } 690 if (flags) 691 (void)printf("%sunknown_flags:%x", sep, flags); 692 (void)printf(")"); 693 } 694 (void)printf("\n"); 695 } 696 697 char * 698 loadvnodes(int *avnodes) 699 { 700 int mib[2]; 701 size_t copysize; 702 char *vnodebase; 703 704 if (totalflag) { 705 KGET(V_NUMV, *avnodes); 706 return NULL; 707 } 708 if (memf != NULL) { 709 /* 710 * do it by hand 711 */ 712 return (kinfo_vnodes(avnodes)); 713 } 714 mib[0] = CTL_KERN; 715 mib[1] = KERN_VNODE; 716 if (sysctl(mib, 2, NULL, ©size, NULL, 0) == -1) 717 err(1, "sysctl: KERN_VNODE"); 718 if ((vnodebase = malloc(copysize)) == NULL) 719 err(1, "malloc"); 720 if (sysctl(mib, 2, vnodebase, ©size, NULL, 0) == -1) 721 err(1, "sysctl: KERN_VNODE"); 722 if (copysize % (VPTRSZ + VNODESZ)) 723 errx(1, "vnode size mismatch"); 724 *avnodes = copysize / (VPTRSZ + VNODESZ); 725 726 return (vnodebase); 727 } 728 729 /* 730 * simulate what a running kernel does in in kinfo_vnode 731 */ 732 char * 733 kinfo_vnodes(int *avnodes) 734 { 735 struct mntlist mountlist; 736 struct mount *mp, mount; 737 struct vnode *vp, vnode; 738 char *beg, *bp, *ep; 739 int numvnodes; 740 741 KGET(V_NUMV, numvnodes); 742 if ((bp = malloc((numvnodes + 20) * (VPTRSZ + VNODESZ))) == NULL) 743 err(1, "malloc"); 744 beg = bp; 745 ep = bp + (numvnodes + 20) * (VPTRSZ + VNODESZ); 746 KGET(V_MOUNTLIST, mountlist); 747 for (mp = mountlist.cqh_first;; 748 mp = mount.mnt_list.cqe_next) { 749 KGET2(mp, &mount, sizeof(mount), "mount entry"); 750 TAILQ_FOREACH(vp, &mount.mnt_vnodelist, v_mntvnodes) { 751 KGET2(vp, &vnode, sizeof(vnode), "vnode"); 752 if (bp + VPTRSZ + VNODESZ > ep) 753 /* XXX - should realloc */ 754 errx(1, "no more room for vnodes"); 755 memmove(bp, &vp, VPTRSZ); 756 bp += VPTRSZ; 757 memmove(bp, &vnode, VNODESZ); 758 bp += VNODESZ; 759 } 760 if (mp == mountlist.cqh_last) 761 break; 762 } 763 *avnodes = (bp - beg) / (VPTRSZ + VNODESZ); 764 return (beg); 765 } 766 767 void 768 ttymode(void) 769 { 770 int ntty; 771 struct ttylist_head tty_head; 772 struct tty *tp, tty; 773 774 KGET(TTY_NTTY, ntty); 775 (void)printf("%d terminal device%s\n", ntty, ntty == 1 ? "" : "s"); 776 KGET(TTY_TTYLIST, tty_head); 777 (void)printf( 778 " LINE RAW CAN OUT HWT LWT COL STATE %-*s PGID DISC\n", 779 PTRSTRWIDTH, "SESS"); 780 for (tp = tty_head.tqh_first; tp; tp = tty.tty_link.tqe_next) { 781 KGET2(tp, &tty, sizeof tty, "tty struct"); 782 ttyprt(&tty); 783 } 784 } 785 786 static const struct flagbit_desc ttystates[] = { 787 { TS_ISOPEN, 'O'}, 788 { TS_DIALOUT, '>'}, 789 { TS_CARR_ON, 'C'}, 790 { TS_TIMEOUT, 'T'}, 791 { TS_FLUSH, 'F'}, 792 { TS_BUSY, 'B'}, 793 { TS_ASLEEP, 'A'}, 794 { TS_XCLUDE, 'X'}, 795 { TS_TTSTOP, 'S'}, 796 { TS_TBLOCK, 'K'}, 797 { TS_ASYNC, 'Y'}, 798 { TS_BKSL, 'D'}, 799 { TS_ERASE, 'E'}, 800 { TS_LNCH, 'L'}, 801 { TS_TYPEN, 'P'}, 802 { TS_CNTTB, 'N'}, 803 { 0, '\0'}, 804 }; 805 806 void 807 ttyprt(struct tty *tp) 808 { 809 char state[sizeof(ttystates) / sizeof(ttystates[0]) + 1]; 810 char dev[2 + 3 + 1 + 5 + 1]; /* 12bit major + 20bit minor */ 811 struct linesw t_linesw; 812 const char *name; 813 char buffer; 814 pid_t pgid; 815 int n, ovflw; 816 817 if (usenumflag || (name = devname(tp->t_dev, S_IFCHR)) == NULL) { 818 (void)snprintf(dev, sizeof(dev), "0x%3x:%x", 819 major(tp->t_dev), minor(tp->t_dev)); 820 name = dev; 821 } 822 ovflw = 0; 823 PRWORD(ovflw, "%-*s", 7, 0, name); 824 PRWORD(ovflw, " %*d", 3, 1, tp->t_rawq.c_cc); 825 PRWORD(ovflw, " %*d", 4, 1, tp->t_canq.c_cc); 826 PRWORD(ovflw, " %*d", 4, 1, tp->t_outq.c_cc); 827 PRWORD(ovflw, " %*d", 5, 1, tp->t_hiwat); 828 PRWORD(ovflw, " %*d", 4, 1, tp->t_lowat); 829 PRWORD(ovflw, " %*d", 8, 1, tp->t_column); 830 n = getflags(ttystates, state, tp->t_state); 831 if (tp->t_wopen) { 832 state[n++] = 'W'; 833 state[n] = '\0'; 834 } 835 PRWORD(ovflw, " %-*s", 7, 1, state); 836 PRWORD(ovflw, " %*lX", PTRSTRWIDTH + 1, 1, (u_long)tp->t_session); 837 pgid = 0; 838 if (tp->t_pgrp != NULL) 839 KGET2(&tp->t_pgrp->pg_id, &pgid, sizeof(pid_t), "pgid"); 840 PRWORD(ovflw, " %*d", 6, 1, pgid); 841 KGET2(tp->t_linesw, &t_linesw, sizeof(t_linesw), 842 "line discipline switch table"); 843 name = t_linesw.l_name; 844 (void)putchar(' '); 845 for (;;) { 846 KGET2(name, &buffer, sizeof(buffer), "line discipline name"); 847 if (buffer == '\0') 848 break; 849 (void)putchar(buffer); 850 name++; 851 } 852 (void)putchar('\n'); 853 } 854 855 static const struct flagbit_desc filemode_flags[] = { 856 { FREAD, 'R' }, 857 { FWRITE, 'W' }, 858 { FAPPEND, 'A' }, 859 #ifdef FSHLOCK /* currently gone */ 860 { FSHLOCK, 'S' }, 861 { FEXLOCK, 'X' }, 862 #endif 863 { FASYNC, 'I' }, 864 { 0, '\0' }, 865 }; 866 867 void 868 filemode(void) 869 { 870 struct file *fp; 871 struct file *addr; 872 char flags[sizeof(filemode_flags) / sizeof(filemode_flags[0])]; 873 char *buf, *offset; 874 int len, maxfile, nfile, ovflw; 875 876 KGET(FNL_MAXFILE, maxfile); 877 if (totalflag) { 878 KGET(FNL_NFILE, nfile); 879 (void)printf("%3d/%3d files\n", nfile, maxfile); 880 return; 881 } 882 if (getfiles(&buf, &len, &offset) == -1) 883 return; 884 /* 885 * Getfiles returns in malloc'd memory a pointer to the first file 886 * structure, and then an array of file structs (whose addresses are 887 * derivable from the previous entry). 888 */ 889 addr = ((struct filelist *)offset)->lh_first; 890 fp = (struct file *)(offset + sizeof(struct filelist)); 891 nfile = (len - sizeof(struct filelist)) / sizeof(struct file); 892 893 (void)printf("%d/%d open files\n", nfile, maxfile); 894 (void)printf("%*s%s%*s TYPE FLG CNT MSG %*s%s%*s USE IFLG OFFSET\n", 895 (PTRSTRWIDTH - 4) / 2, "", " LOC", (PTRSTRWIDTH - 4) / 2, "", 896 (PTRSTRWIDTH - 4) / 2, "", "DATA", (PTRSTRWIDTH - 4) / 2, ""); 897 for (; (char *)fp < offset + len; addr = fp->f_list.le_next, fp++) { 898 if ((unsigned)fp->f_type >= sizeof(dtypes) / sizeof(dtypes[0])) 899 continue; 900 ovflw = 0; 901 (void)getflags(filemode_flags, flags, fp->f_flag); 902 PRWORD(ovflw, "%*lx", PTRSTRWIDTH, 0, (long)addr); 903 PRWORD(ovflw, " %-*s", 9, 1, dtypes[fp->f_type]); 904 PRWORD(ovflw, " %*s", 6, 1, flags); 905 PRWORD(ovflw, " %*d", 5, 1, fp->f_count); 906 PRWORD(ovflw, " %*d", 5, 1, fp->f_msgcount); 907 PRWORD(ovflw, " %*lx", PTRSTRWIDTH + 1, 2, (long)fp->f_data); 908 PRWORD(ovflw, " %*d", 5, 1, fp->f_usecount); 909 PRWORD(ovflw, " %*x", 5, 1, fp->f_iflags); 910 if (fp->f_offset < 0) 911 PRWORD(ovflw, " %-*lld\n", PTRSTRWIDTH + 1, 2, 912 (long long)fp->f_offset); 913 else 914 PRWORD(ovflw, " %-*lld\n", PTRSTRWIDTH + 1, 2, 915 (long long)fp->f_offset); 916 } 917 free(buf); 918 } 919 920 int 921 getfiles(char **abuf, int *alen, char **aoffset) 922 { 923 size_t len; 924 int mib[2]; 925 char *buf; 926 size_t offset; 927 928 /* 929 * XXX 930 * Add emulation of KINFO_FILE here. 931 */ 932 if (memf != NULL) 933 errx(1, "files on dead kernel, not implemented"); 934 935 mib[0] = CTL_KERN; 936 mib[1] = KERN_FILE; 937 if (sysctl(mib, 2, NULL, &len, NULL, 0) == -1) { 938 warn("sysctl: KERN_FILE"); 939 return (-1); 940 } 941 /* We need to align (struct file *) in the buffer. */ 942 offset = len % sizeof(off_t); 943 if ((buf = malloc(len + offset)) == NULL) 944 err(1, "malloc"); 945 if (sysctl(mib, 2, buf + offset, &len, NULL, 0) == -1) { 946 warn("sysctl: KERN_FILE"); 947 return (-1); 948 } 949 *abuf = buf; 950 *alen = len; 951 *aoffset = (buf + offset); 952 return (0); 953 } 954 955 void 956 usage(void) 957 { 958 959 (void)fprintf(stderr, 960 "usage: %s [-T|-f|-s|-t|-v] [-ghkmn] [-M core] [-N system]\n", 961 getprogname()); 962 exit(1); 963 } 964
Indexes created Tue Sep 23 01:09:51 GMT 2025