/* $NetBSD: pstat.c,v 1.50 1999/11/18 08:34:38 enami Exp $ */ /*- * Copyright (c) 1980, 1991, 1993, 1994 * The Regents of the University of California. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Berkeley and its contributors. * 4. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #include #ifndef lint __COPYRIGHT("@(#) Copyright (c) 1980, 1991, 1993, 1994\n\ The Regents of the University of California. All rights reserved.\n"); #endif /* not lint */ #ifndef lint #if 0 static char sccsid[] = "@(#)pstat.c 8.16 (Berkeley) 5/9/95"; #else __RCSID("$NetBSD: pstat.c,v 1.50 1999/11/18 08:34:38 enami Exp $"); #endif #endif /* not lint */ #include #include #include #include #include #define _KERNEL #define _LKM #include #include #include #define NFS #include #undef NFS #include #include #include #undef _KERNEL #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "swapctl.h" struct nlist nl[] = { #define V_MOUNTLIST 0 { "_mountlist" }, /* address of head of mount list. */ #define V_NUMV 1 { "_numvnodes" }, #define FNL_NFILE 2 { "_nfiles" }, #define FNL_MAXFILE 3 { "_maxfiles" }, #define TTY_NTTY 4 { "_tty_count" }, #define TTY_TTYLIST 5 { "_ttylist" }, #define NLMANDATORY TTY_TTYLIST /* names up to here are mandatory */ { "" } }; int usenumflag; int totalflag; int kflag; char *nlistf = NULL; char *memf = NULL; kvm_t *kd; struct { int m_flag; const char *m_name; } mnt_flags[] = { { MNT_RDONLY, "rdonly" }, { MNT_SYNCHRONOUS, "sync" }, { MNT_NOEXEC, "noexec" }, { MNT_NOSUID, "nosuid" }, { MNT_NODEV, "nodev" }, { MNT_UNION, "union" }, { MNT_ASYNC, "async" }, { MNT_NOCOREDUMP, "nocoredump" }, { MNT_NOATIME, "noatime" }, { MNT_SYMPERM, "symperm" }, { MNT_NODEVMTIME, "nodevmtime" }, { MNT_SOFTDEP, "softdep" }, { MNT_EXRDONLY, "exrdonly" }, { MNT_EXPORTED, "exported" }, { MNT_DEFEXPORTED, "defexported" }, { MNT_EXPORTANON, "exportanon" }, { MNT_EXKERB, "exkerb" }, { MNT_EXNORESPORT, "exnoresport" }, { MNT_EXPUBLIC, "expublic" }, { MNT_LOCAL, "local" }, { MNT_QUOTA, "quota" }, { MNT_ROOTFS, "rootfs" }, { MNT_UPDATE, "update" }, { MNT_DELEXPORT, "delexport" }, { MNT_RELOAD, "reload" }, { MNT_FORCE, "force" }, { MNT_GONE, "gone" }, { MNT_UNMOUNT, "unmount" }, { MNT_WANTRDWR, "wantrdwr" }, { 0 } }; #define SVAR(var) __STRING(var) /* to force expansion */ #define KGET(idx, var) \ KGET1(idx, &var, sizeof(var), SVAR(var)) #define KGET1(idx, p, s, msg) \ KGET2(nl[idx].n_value, p, s, msg) #define KGET2(addr, p, s, msg) \ if (kvm_read(kd, (u_long)(addr), p, s) != s) \ warnx("cannot read %s: %s", msg, kvm_geterr(kd)) #define KGETRET(addr, p, s, msg) \ if (kvm_read(kd, (u_long)(addr), p, s) != s) { \ warnx("cannot read %s: %s", msg, kvm_geterr(kd)); \ return (0); \ } void filemode __P((void)); int getfiles __P((char **, int *)); struct mount * getmnt __P((struct mount *)); struct e_vnode * kinfo_vnodes __P((int *)); struct e_vnode * loadvnodes __P((int *)); int main __P((int, char **)); void mount_print __P((struct mount *)); void nfs_header __P((void)); int nfs_print __P((struct vnode *)); void ttymode __P((void)); void ttyprt __P((struct tty *)); void ufs_getflags __P((struct vnode *, struct inode *, char *)); void ufs_header __P((void)); int ufs_print __P((struct vnode *)); int ext2fs_print __P((struct vnode *)); void union_header __P((void)); int union_print __P((struct vnode *)); void usage __P((void)); void vnode_header __P((void)); void vnode_print __P((struct vnode *, struct vnode *)); void vnodemode __P((void)); int main(argc, argv) int argc; char *argv[]; { extern char *optarg; extern int optind; int ch, i, quit, ret; int fileflag, swapflag, ttyflag, vnodeflag; gid_t egid = getegid(); char buf[_POSIX2_LINE_MAX]; setegid(getgid()); fileflag = swapflag = ttyflag = vnodeflag = 0; while ((ch = getopt(argc, argv, "TM:N:fiknstv")) != -1) switch (ch) { case 'f': fileflag = 1; break; case 'M': memf = optarg; break; case 'N': nlistf = optarg; break; case 'n': usenumflag = 1; break; case 's': swapflag = 1; break; case 'T': totalflag = 1; break; case 't': ttyflag = 1; break; case 'k': kflag = 1; break; case 'v': case 'i': /* Backward compatibility. */ vnodeflag = 1; break; default: usage(); } argc -= optind; argv += optind; /* * Discard setgid privileges. If not the running kernel, we toss * them away totally so that bad guys can't print interesting stuff * from kernel memory, otherwise switch back to kmem for the * duration of the kvm_openfiles() call. */ if (nlistf != NULL || memf != NULL) (void)setgid(getgid()); else (void)setegid(egid); if ((kd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, buf)) == 0) errx(1, "kvm_openfiles: %s", buf); /* get rid of it now anyway */ if (nlistf == NULL && memf == NULL) (void)setgid(getgid()); if ((ret = kvm_nlist(kd, nl)) != 0) { if (ret == -1) errx(1, "kvm_nlist: %s", kvm_geterr(kd)); for (i = quit = 0; i <= NLMANDATORY; i++) if (!nl[i].n_value) { quit = 1; warnx("undefined symbol: %s", nl[i].n_name); } if (quit) exit(1); } if (!(fileflag | vnodeflag | ttyflag | swapflag | totalflag)) usage(); if (fileflag || totalflag) filemode(); if (vnodeflag || totalflag) vnodemode(); if (ttyflag) ttymode(); if (swapflag || totalflag) list_swap(0, kflag, 0, totalflag, 1); exit (0); } struct e_vnode { struct vnode *avnode; struct vnode vnode; }; void vnodemode() { struct e_vnode *e_vnodebase, *endvnode, *evp; struct vnode *vp; struct mount *maddr, *mp; int numvnodes; int (*vnode_fsprint) __P((struct vnode *)); /* per-fs data printer */ mp = NULL; e_vnodebase = loadvnodes(&numvnodes); if (totalflag) { (void)printf("%7d vnodes\n", numvnodes); return; } endvnode = e_vnodebase + numvnodes; (void)printf("%d active vnodes\n", numvnodes); #define ST mp->mnt_stat #define FSTYPE_IS(mp, name) \ (strncmp((mp)->mnt_stat.f_fstypename, (name), MFSNAMELEN) == 0) maddr = NULL; vnode_fsprint = NULL; for (evp = e_vnodebase; evp < endvnode; evp++) { vp = &evp->vnode; if (vp->v_mount != maddr) { /* * New filesystem */ if ((mp = getmnt(vp->v_mount)) == NULL) continue; maddr = vp->v_mount; mount_print(mp); vnode_header(); if (FSTYPE_IS(mp, MOUNT_FFS) || FSTYPE_IS(mp, MOUNT_MFS)) { ufs_header(); vnode_fsprint = ufs_print; } else if (FSTYPE_IS(mp, MOUNT_NFS)) { nfs_header(); vnode_fsprint = nfs_print; } else if (FSTYPE_IS(mp, MOUNT_EXT2FS)) { ufs_header(); vnode_fsprint = ext2fs_print; } else if (FSTYPE_IS(mp, MOUNT_UNION)) { union_header(); vnode_fsprint = union_print; } else vnode_fsprint = NULL; (void)printf("\n"); } vnode_print(evp->avnode, vp); if (VTOI(vp) != NULL && vnode_fsprint != NULL) (*vnode_fsprint)(vp); (void)printf("\n"); } free(e_vnodebase); } void vnode_header() { (void)printf("ADDR TYP VFLAG USE HOLD TAG"); } void vnode_print(avnode, vp) struct vnode *avnode; struct vnode *vp; { char *type, flags[16]; char *fp = flags; int flag; /* * set type */ switch (vp->v_type) { case VNON: type = "non"; break; case VREG: type = "reg"; break; case VDIR: type = "dir"; break; case VBLK: type = "blk"; break; case VCHR: type = "chr"; break; case VLNK: type = "lnk"; break; case VSOCK: type = "soc"; break; case VFIFO: type = "fif"; break; case VBAD: type = "bad"; break; default: type = "unk"; break; } /* * gather flags */ flag = vp->v_flag; if (flag & VROOT) *fp++ = 'R'; if (flag & VTEXT) *fp++ = 'T'; if (flag & VSYSTEM) *fp++ = 'S'; if (flag & VISTTY) *fp++ = 'I'; if (flag & VXLOCK) *fp++ = 'L'; if (flag & VXWANT) *fp++ = 'W'; if (flag & VBWAIT) *fp++ = 'B'; if (flag & VALIASED) *fp++ = 'A'; if (flag & VDIROP) *fp++ = 'D'; if (flag & VLAYER) *fp++ = 'Y'; if (flag & VONWORKLST) *fp++ = 'O'; if (flag == 0) *fp++ = '-'; *fp = '\0'; (void)printf("%8lx %s %5s %4ld %4ld %3d", (long)avnode, type, flags, (long)vp->v_usecount, (long)vp->v_holdcnt, vp->v_tag); } void ufs_getflags(vp, ip, flags) struct vnode *vp; struct inode *ip; char *flags; { int flag; /* * XXX need to to locking state. */ flag = ip->i_flag; if (flag & IN_RENAME) *flags++ = 'R'; if (flag & IN_UPDATE) *flags++ = 'U'; if (flag & IN_ACCESS) *flags++ = 'A'; if (flag & IN_CHANGE) *flags++ = 'C'; if (flag & IN_MODIFIED) *flags++ = 'M'; if (flag & IN_SHLOCK) *flags++ = 'S'; if (flag & IN_EXLOCK) *flags++ = 'E'; if (flag == 0) *flags++ = '-'; *flags = '\0'; } void ufs_header() { (void)printf(" FILEID IFLAG RDEV|SZ"); } int ufs_print(vp) struct vnode *vp; { struct inode inode, *ip = &inode; char flagbuf[16]; char *name; mode_t type; KGETRET(VTOI(vp), &inode, sizeof(struct inode), "vnode's inode"); ufs_getflags(vp, ip, flagbuf); (void)printf(" %6d %5s", ip->i_number, flagbuf); type = ip->i_ffs_mode & S_IFMT; if (S_ISCHR(ip->i_ffs_mode) || S_ISBLK(ip->i_ffs_mode)) if (usenumflag || ((name = devname(ip->i_ffs_rdev, type)) == NULL)) (void)printf(" %2d,%-2d", major(ip->i_ffs_rdev), minor(ip->i_ffs_rdev)); else (void)printf(" %7s", name); else (void)printf(" %7qd", (long long)ip->i_ffs_size); return (0); } int ext2fs_print(vp) struct vnode *vp; { struct inode inode, *ip = &inode; char flagbuf[16]; char *name; mode_t type; KGETRET(VTOI(vp), &inode, sizeof(struct inode), "vnode's inode"); ufs_getflags(vp, ip, flagbuf); (void)printf(" %6d %5s", ip->i_number, flagbuf); type = ip->i_e2fs_mode & S_IFMT; if (S_ISCHR(ip->i_e2fs_mode) || S_ISBLK(ip->i_e2fs_mode)) if (usenumflag || ((name = devname(ip->i_e2fs_rdev, type)) == NULL)) (void)printf(" %2d,%-2d", major(ip->i_e2fs_rdev), minor(ip->i_e2fs_rdev)); else (void)printf(" %7s", name); else (void)printf(" %7u", (u_int)ip->i_e2fs_size); return (0); } void nfs_header() { (void)printf(" FILEID NFLAG RDEV|SZ"); } int nfs_print(vp) struct vnode *vp; { struct nfsnode nfsnode, *np = &nfsnode; char flagbuf[16], *flags = flagbuf; int flag; struct vattr va; char *name; mode_t type; KGETRET(VTONFS(vp), &nfsnode, sizeof(nfsnode), "vnode's nfsnode"); flag = np->n_flag; if (flag & NFLUSHWANT) *flags++ = 'W'; if (flag & NFLUSHINPROG) *flags++ = 'P'; if (flag & NMODIFIED) *flags++ = 'M'; if (flag & NWRITEERR) *flags++ = 'E'; if (flag & NQNFSNONCACHE) *flags++ = 'X'; if (flag & NQNFSWRITE) *flags++ = 'O'; if (flag & NQNFSEVICTED) *flags++ = 'G'; if (flag == 0) *flags++ = '-'; *flags = '\0'; KGETRET(np->n_vattr, &va, sizeof(va), "vnode attr"); (void)printf(" %6ld %5s", (long)va.va_fileid, flagbuf); type = va.va_mode & S_IFMT; if (S_ISCHR(va.va_mode) || S_ISBLK(va.va_mode)) if (usenumflag || ((name = devname(va.va_rdev, type)) == NULL)) (void)printf(" %2d,%-2d", major(va.va_rdev), minor(va.va_rdev)); else (void)printf(" %7s", name); else (void)printf(" %7qd", (long long)np->n_size); return (0); } void union_header() { (void)printf(" UPPER LOWER"); } int union_print(vp) struct vnode *vp; { struct union_node unode, *up = &unode; KGETRET(VTOUNION(vp), &unode, sizeof(unode), "vnode's unode"); (void)printf(" %8lx %8lx", (long)up->un_uppervp, (long)up->un_lowervp); return (0); } /* * Given a pointer to a mount structure in kernel space, * read it in and return a usable pointer to it. */ struct mount * getmnt(maddr) struct mount *maddr; { static struct mtab { struct mtab *next; struct mount *maddr; struct mount mount; } *mhead = NULL; struct mtab *mt; for (mt = mhead; mt != NULL; mt = mt->next) if (maddr == mt->maddr) return (&mt->mount); if ((mt = malloc(sizeof(struct mtab))) == NULL) err(1, "malloc"); KGETRET(maddr, &mt->mount, sizeof(struct mount), "mount table"); mt->maddr = maddr; mt->next = mhead; mhead = mt; return (&mt->mount); } void mount_print(mp) struct mount *mp; { int flags; (void)printf("*** MOUNT %s %s on %s", ST.f_fstypename, ST.f_mntfromname, ST.f_mntonname); if ((flags = mp->mnt_flag) != 0) { int i; const char *sep = " ("; for (i = 0; mnt_flags[i].m_flag; i++) { if (flags & mnt_flags[i].m_flag) { (void)printf("%s%s", sep, mnt_flags[i].m_name); flags &= ~mnt_flags[i].m_flag; sep = ","; } } if (flags) (void)printf("%sunknown_flags:%x", sep, flags); (void)printf(")"); } (void)printf("\n"); } struct e_vnode * loadvnodes(avnodes) int *avnodes; { int mib[2]; size_t copysize; struct e_vnode *vnodebase; if (memf != NULL) { /* * do it by hand */ return (kinfo_vnodes(avnodes)); } mib[0] = CTL_KERN; mib[1] = KERN_VNODE; if (sysctl(mib, 2, NULL, ©size, NULL, 0) == -1) err(1, "sysctl: KERN_VNODE"); if ((vnodebase = malloc(copysize)) == NULL) err(1, "malloc"); if (sysctl(mib, 2, vnodebase, ©size, NULL, 0) == -1) err(1, "sysctl: KERN_VNODE"); if (copysize % sizeof(struct e_vnode)) errx(1, "vnode size mismatch"); *avnodes = copysize / sizeof(struct e_vnode); return (vnodebase); } /* * simulate what a running kernel does in in kinfo_vnode */ struct e_vnode * kinfo_vnodes(avnodes) int *avnodes; { struct mntlist mountlist; struct mount *mp, mount; struct vnode *vp, vnode; char *vbuf, *evbuf, *bp; int num, numvnodes; #define VPTRSZ sizeof(struct vnode *) #define VNODESZ sizeof(struct vnode) KGET(V_NUMV, numvnodes); if ((vbuf = malloc((numvnodes + 20) * (VPTRSZ + VNODESZ))) == NULL) err(1, "malloc"); bp = vbuf; evbuf = vbuf + (numvnodes + 20) * (VPTRSZ + VNODESZ); KGET(V_MOUNTLIST, mountlist); for (num = 0, mp = mountlist.cqh_first;; mp = mount.mnt_list.cqe_next) { KGET2(mp, &mount, sizeof(mount), "mount entry"); for (vp = mount.mnt_vnodelist.lh_first; vp != NULL; vp = vnode.v_mntvnodes.le_next) { KGET2(vp, &vnode, sizeof(vnode), "vnode"); if ((bp + VPTRSZ + VNODESZ) > evbuf) /* XXX - should realloc */ errx(1, "no more room for vnodes"); memmove(bp, &vp, VPTRSZ); bp += VPTRSZ; memmove(bp, &vnode, VNODESZ); bp += VNODESZ; num++; } if (mp == mountlist.cqh_last) break; } *avnodes = num; return ((struct e_vnode *)vbuf); } char hdr[]=" LINE RAW CAN OUT HWT LWT COL STATE SESS PGID DISC\n"; int ttyspace = 128; void ttymode() { int ntty; struct ttylist_head tty_head; struct tty *tp, tty; KGET(TTY_NTTY, ntty); (void)printf("%d terminal device%s\n", ntty, ntty == 1 ? "" : "s"); KGET(TTY_TTYLIST, tty_head); (void)printf(hdr); for (tp = tty_head.tqh_first; tp; tp = tty.tty_link.tqe_next) { KGET2(tp, &tty, sizeof tty, "tty struct"); ttyprt(&tty); } } struct { int flag; char val; } ttystates[] = { { TS_ISOPEN, 'O'}, { TS_DIALOUT, '>'}, { TS_CARR_ON, 'C'}, { TS_TIMEOUT, 'T'}, { TS_FLUSH, 'F'}, { TS_BUSY, 'B'}, { TS_ASLEEP, 'A'}, { TS_XCLUDE, 'X'}, { TS_TTSTOP, 'S'}, { TS_TBLOCK, 'K'}, { TS_ASYNC, 'Y'}, { TS_BKSL, 'D'}, { TS_ERASE, 'E'}, { TS_LNCH, 'L'}, { TS_TYPEN, 'P'}, { TS_CNTTB, 'N'}, { 0, '\0'}, }; void ttyprt(tp) struct tty *tp; { int i, j; pid_t pgid; char *name, state[20]; if (usenumflag || (name = devname(tp->t_dev, S_IFCHR)) == NULL) (void)printf("0x%3x:%1x ", major(tp->t_dev), minor(tp->t_dev)); else (void)printf("%-7s ", name); (void)printf("%2d %3d ", tp->t_rawq.c_cc, tp->t_canq.c_cc); (void)printf("%3d %4d %3d %7d ", tp->t_outq.c_cc, tp->t_hiwat, tp->t_lowat, tp->t_column); for (i = j = 0; ttystates[i].flag; i++) if (tp->t_state&ttystates[i].flag) state[j++] = ttystates[i].val; if (tp->t_wopen) state[j++] = 'W'; if (j == 0) state[j++] = '-'; state[j] = '\0'; (void)printf("%-6s %8lX", state, (u_long)tp->t_session); pgid = 0; if (tp->t_pgrp != NULL) KGET2(&tp->t_pgrp->pg_id, &pgid, sizeof(pid_t), "pgid"); (void)printf("%6d ", pgid); switch (tp->t_line) { case TTYDISC: (void)printf("term\n"); break; case TABLDISC: (void)printf("tab\n"); break; case SLIPDISC: (void)printf("slip\n"); break; case PPPDISC: (void)printf("ppp\n"); break; case STRIPDISC: (void)printf("strip\n"); break; default: (void)printf("%d\n", tp->t_line); break; } } void filemode() { struct file *fp; struct file *addr; char *buf, flagbuf[16], *fbp; int len, maxfile, nfile; static char *dtypes[] = { "???", "inode", "socket" }; KGET(FNL_MAXFILE, maxfile); if (totalflag) { KGET(FNL_NFILE, nfile); (void)printf("%3d/%3d files\n", nfile, maxfile); return; } if (getfiles(&buf, &len) == -1) return; /* * Getfiles returns in malloc'd memory a pointer to the first file * structure, and then an array of file structs (whose addresses are * derivable from the previous entry). */ addr = ((struct filelist *)buf)->lh_first; fp = (struct file *)(buf + sizeof(struct filelist)); nfile = (len - sizeof(struct filelist)) / sizeof(struct file); (void)printf("%d/%d open files\n", nfile, maxfile); (void)printf(" LOC TYPE FLG CNT MSG DATA OFFSET\n"); for (; (char *)fp < buf + len; addr = fp->f_list.le_next, fp++) { if ((unsigned)fp->f_type > DTYPE_SOCKET) continue; (void)printf("%lx ", (long)addr); (void)printf("%-8.8s", dtypes[fp->f_type]); fbp = flagbuf; if (fp->f_flag & FREAD) *fbp++ = 'R'; if (fp->f_flag & FWRITE) *fbp++ = 'W'; if (fp->f_flag & FAPPEND) *fbp++ = 'A'; #ifdef FSHLOCK /* currently gone */ if (fp->f_flag & FSHLOCK) *fbp++ = 'S'; if (fp->f_flag & FEXLOCK) *fbp++ = 'X'; #endif if (fp->f_flag & FASYNC) *fbp++ = 'I'; *fbp = '\0'; (void)printf("%6s %3d", flagbuf, fp->f_count); (void)printf(" %3d", fp->f_msgcount); (void)printf(" %8.1lx", (long)fp->f_data); if (fp->f_offset < 0) (void)printf(" %qx\n", (long long)fp->f_offset); else (void)printf(" %qd\n", (long long)fp->f_offset); } free(buf); } int getfiles(abuf, alen) char **abuf; int *alen; { size_t len; int mib[2]; char *buf; /* * XXX * Add emulation of KINFO_FILE here. */ if (memf != NULL) errx(1, "files on dead kernel, not implemented\n"); mib[0] = CTL_KERN; mib[1] = KERN_FILE; if (sysctl(mib, 2, NULL, &len, NULL, 0) == -1) { warn("sysctl: KERN_FILE"); return (-1); } if ((buf = malloc(len)) == NULL) err(1, "malloc"); if (sysctl(mib, 2, buf, &len, NULL, 0) == -1) { warn("sysctl: KERN_FILE"); return (-1); } *abuf = buf; *alen = len; return (0); } void usage() { (void)fprintf(stderr, "usage: pstat [-T|-f|-s|-t|-v] [-kn] [-M core] [-N system]\n"); exit(1); }