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pstat.c
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Editing: pstat.c
/*- * SPDX-License-Identifier: BSD-3-Clause * * Copyright (c) 1980, 1991, 1993, 1994 * The Regents of the University of California. All rights reserved. * Copyright (c) 2002 Networks Associates Technologies, Inc. * All rights reserved. * * Portions of this software were developed for the FreeBSD Project by * ThinkSec AS and NAI Labs, the Security Research Division of Network * Associates, Inc. under DARPA/SPAWAR contract N66001-01-C-8035 * ("CBOSS"), as part of the DARPA CHATS research program. * * 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. 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. */ #if 0 #ifndef lint static const char copyright[] = "@(#) Copyright (c) 1980, 1991, 1993, 1994\n\ The Regents of the University of California. All rights reserved.\n"; #endif /* not lint */ #ifndef lint static char sccsid[] = "@(#)pstat.c 8.16 (Berkeley) 5/9/95"; #endif /* not lint */ #endif #include <sys/cdefs.h> __FBSDID("$FreeBSD$"); #include <sys/param.h> #include <sys/time.h> #include <sys/file.h> #include <sys/stat.h> #include <sys/stdint.h> #include <sys/ioctl.h> #include <sys/tty.h> #include <sys/blist.h> #include <sys/sysctl.h> #include <vm/vm_param.h> #include <err.h> #include <errno.h> #include <fcntl.h> #include <kvm.h> #include <libutil.h> #include <limits.h> #include <nlist.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #include <unistd.h> enum { NL_CONSTTY, NL_MAXFILES, NL_NFILES, NL_TTY_LIST, NL_MARKER }; static struct { int order; const char *name; } namelist[] = { { NL_CONSTTY, "_constty" }, { NL_MAXFILES, "_maxfiles" }, { NL_NFILES, "_openfiles" }, { NL_TTY_LIST, "_tty_list" }, { NL_MARKER, "" }, }; #define NNAMES (sizeof(namelist) / sizeof(*namelist)) static struct nlist nl[NNAMES]; #define SIZEHDR "Size" static int humanflag; static int usenumflag; static int totalflag; static int swapflag; static char *nlistf; static char *memf; static kvm_t *kd; static const char *usagestr; static void filemode(void); static int getfiles(struct xfile **, size_t *); static void swapmode(void); static void ttymode(void); static void ttyprt(struct xtty *); static void usage(void); int main(int argc, char *argv[]) { int ch, quit, ret; int fileflag, ttyflag; unsigned int i; char buf[_POSIX2_LINE_MAX]; const char *opts; fileflag = swapflag = ttyflag = 0; /* We will behave like good old swapinfo if thus invoked */ opts = strrchr(argv[0], '/'); if (opts) opts++; else opts = argv[0]; if (!strcmp(opts, "swapinfo")) { swapflag = 1; opts = "ghkmM:N:"; usagestr = "swapinfo [-ghkm] [-M core [-N system]]"; } else { opts = "TM:N:fghkmnst"; usagestr = "pstat [-Tfghkmnst] [-M core [-N system]]"; } while ((ch = getopt(argc, argv, opts)) != -1) switch (ch) { case 'f': fileflag = 1; break; case 'g': setenv("BLOCKSIZE", "1G", 1); break; case 'h': humanflag = 1; break; case 'k': setenv("BLOCKSIZE", "1K", 1); break; case 'm': setenv("BLOCKSIZE", "1M", 1); break; case 'M': memf = optarg; break; case 'N': nlistf = optarg; break; case 'n': usenumflag = 1; break; case 's': ++swapflag; break; case 'T': totalflag = 1; break; case 't': ttyflag = 1; break; default: usage(); } /* * Initialize symbol names list. */ for (i = 0; i < NNAMES; i++) nl[namelist[i].order].n_name = strdup(namelist[i].name); if (memf != NULL) { kd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, buf); if (kd == NULL) errx(1, "kvm_openfiles: %s", buf); if ((ret = kvm_nlist(kd, nl)) != 0) { if (ret == -1) errx(1, "kvm_nlist: %s", kvm_geterr(kd)); quit = 0; for (i = 0; nl[i].n_name[0] != '\0'; ++i) if (nl[i].n_value == 0) { quit = 1; warnx("undefined symbol: %s", nl[i].n_name); } if (quit) exit(1); } } if (!(fileflag | ttyflag | swapflag | totalflag)) usage(); if (fileflag || totalflag) filemode(); if (ttyflag) ttymode(); if (swapflag || totalflag) swapmode(); exit (0); } static void usage(void) { fprintf(stderr, "usage: %s\n", usagestr); exit (1); } static const char fhdr32[] = " LOC TYPE FLG CNT MSG DATA OFFSET\n"; /* c0000000 ------ RWAI 123 123 c0000000 1000000000000000 */ static const char fhdr64[] = " LOC TYPE FLG CNT MSG DATA OFFSET\n"; /* c000000000000000 ------ RWAI 123 123 c000000000000000 1000000000000000 */ static const char hdr[] = " LINE INQ CAN LIN LOW OUTQ USE LOW COL SESS PGID STATE\n"; static void ttymode_kvm(void) { TAILQ_HEAD(, tty) tl; struct tty *tp, tty; struct xtty xt; (void)printf("%s", hdr); bzero(&xt, sizeof xt); xt.xt_size = sizeof xt; if (kvm_read(kd, nl[NL_TTY_LIST].n_value, &tl, sizeof tl) != sizeof tl) errx(1, "kvm_read(): %s", kvm_geterr(kd)); tp = TAILQ_FIRST(&tl); while (tp != NULL) { if (kvm_read(kd, (u_long)tp, &tty, sizeof tty) != sizeof tty) errx(1, "kvm_read(): %s", kvm_geterr(kd)); xt.xt_insize = tty.t_inq.ti_nblocks * TTYINQ_DATASIZE; xt.xt_incc = tty.t_inq.ti_linestart - tty.t_inq.ti_begin; xt.xt_inlc = tty.t_inq.ti_end - tty.t_inq.ti_linestart; xt.xt_inlow = tty.t_inlow; xt.xt_outsize = tty.t_outq.to_nblocks * TTYOUTQ_DATASIZE; xt.xt_outcc = tty.t_outq.to_end - tty.t_outq.to_begin; xt.xt_outlow = tty.t_outlow; xt.xt_column = tty.t_column; /* xt.xt_pgid = ... */ /* xt.xt_sid = ... */ xt.xt_flags = tty.t_flags; xt.xt_dev = (uint32_t)NODEV; ttyprt(&xt); tp = TAILQ_NEXT(&tty, t_list); } } static void ttymode_sysctl(void) { struct xtty *xttys; size_t len; unsigned int i, n; (void)printf("%s", hdr); if ((xttys = malloc(len = sizeof(*xttys))) == NULL) err(1, "malloc()"); while (sysctlbyname("kern.ttys", xttys, &len, 0, 0) == -1) { if (errno != ENOMEM) err(1, "sysctlbyname()"); len *= 2; if ((xttys = realloc(xttys, len)) == NULL) err(1, "realloc()"); } n = len / sizeof(*xttys); for (i = 0; i < n; i++) ttyprt(&xttys[i]); } static void ttymode(void) { if (kd != NULL) ttymode_kvm(); else ttymode_sysctl(); } static struct { int flag; char val; } ttystates[] = { #if 0 { TF_NOPREFIX, 'N' }, #endif { TF_INITLOCK, 'I' }, { TF_CALLOUT, 'C' }, /* Keep these together -> 'Oi' and 'Oo'. */ { TF_OPENED, 'O' }, { TF_OPENED_IN, 'i' }, { TF_OPENED_OUT, 'o' }, { TF_OPENED_CONS, 'c' }, { TF_GONE, 'G' }, { TF_OPENCLOSE, 'B' }, { TF_ASYNC, 'Y' }, { TF_LITERAL, 'L' }, /* Keep these together -> 'Hi' and 'Ho'. */ { TF_HIWAT, 'H' }, { TF_HIWAT_IN, 'i' }, { TF_HIWAT_OUT, 'o' }, { TF_STOPPED, 'S' }, { TF_EXCLUDE, 'X' }, { TF_BYPASS, 'l' }, { TF_ZOMBIE, 'Z' }, { TF_HOOK, 's' }, /* Keep these together -> 'bi' and 'bo'. */ { TF_BUSY, 'b' }, { TF_BUSY_IN, 'i' }, { TF_BUSY_OUT, 'o' }, { 0, '\0'}, }; static void ttyprt(struct xtty *xt) { int i, j; const char *name; if (xt->xt_size != sizeof *xt) errx(1, "struct xtty size mismatch"); if (usenumflag || xt->xt_dev == 0 || (name = devname(xt->xt_dev, S_IFCHR)) == NULL) printf("%#10jx ", (uintmax_t)xt->xt_dev); else printf("%10s ", name); printf("%5zu %4zu %4zu %4zu %5zu %4zu %4zu %5u %5d %5d ", xt->xt_insize, xt->xt_incc, xt->xt_inlc, (xt->xt_insize - xt->xt_inlow), xt->xt_outsize, xt->xt_outcc, (xt->xt_outsize - xt->xt_outlow), MIN(xt->xt_column, 99999), xt->xt_sid, xt->xt_pgid); for (i = j = 0; ttystates[i].flag; i++) if (xt->xt_flags & ttystates[i].flag) { putchar(ttystates[i].val); j++; } if (j == 0) putchar('-'); putchar('\n'); } static void filemode(void) { struct xfile *fp, *buf; char flagbuf[16], *fbp; int maxf, openf; size_t len; static char const * const dtypes[] = { "???", "inode", "socket", "pipe", "fifo", "kqueue", "crypto" }; int i; int wid; if (kd != NULL) { if (kvm_read(kd, nl[NL_MAXFILES].n_value, &maxf, sizeof maxf) != sizeof maxf || kvm_read(kd, nl[NL_NFILES].n_value, &openf, sizeof openf) != sizeof openf) errx(1, "kvm_read(): %s", kvm_geterr(kd)); } else { len = sizeof(int); if (sysctlbyname("kern.maxfiles", &maxf, &len, 0, 0) == -1 || sysctlbyname("kern.openfiles", &openf, &len, 0, 0) == -1) err(1, "sysctlbyname()"); } if (totalflag) { (void)printf("%3d/%3d files\n", openf, maxf); return; } if (getfiles(&buf, &len) == -1) return; openf = len / sizeof *fp; (void)printf("%d/%d open files\n", openf, maxf); printf(sizeof(uintptr_t) == 4 ? fhdr32 : fhdr64); wid = (int)sizeof(uintptr_t) * 2; for (fp = (struct xfile *)buf, i = 0; i < openf; ++fp, ++i) { if ((size_t)fp->xf_type >= sizeof(dtypes) / sizeof(dtypes[0])) continue; (void)printf("%*jx", wid, (uintmax_t)(uintptr_t)fp->xf_file); (void)printf(" %-6.6s", dtypes[fp->xf_type]); fbp = flagbuf; if (fp->xf_flag & FREAD) *fbp++ = 'R'; if (fp->xf_flag & FWRITE) *fbp++ = 'W'; if (fp->xf_flag & FAPPEND) *fbp++ = 'A'; if (fp->xf_flag & FASYNC) *fbp++ = 'I'; *fbp = '\0'; (void)printf(" %4s %3d", flagbuf, fp->xf_count); (void)printf(" %3d", fp->xf_msgcount); (void)printf(" %*jx", wid, (uintmax_t)(uintptr_t)fp->xf_data); (void)printf(" %*jx\n", (int)sizeof(fp->xf_offset) * 2, (uintmax_t)fp->xf_offset); } free(buf); } static int getfiles(struct xfile **abuf, size_t *alen) { struct xfile *buf; size_t len; int mib[2]; /* * XXX * Add emulation of KINFO_FILE here. */ if (kd != NULL) errx(1, "files on dead kernel, not implemented"); 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) errx(1, "malloc"); if (sysctl(mib, 2, buf, &len, NULL, 0) == -1) { warn("sysctl: KERN_FILE"); return (-1); } *abuf = buf; *alen = len; return (0); } /* * swapmode is based on a program called swapinfo written * by Kevin Lahey <kml@rokkaku.atl.ga.us>. */ #define CONVERT(v) ((int64_t)(v) * pagesize / blocksize) #define CONVERT_BLOCKS(v) ((int64_t)(v) * pagesize) static struct kvm_swap swtot; static int nswdev; static void print_swap_header(void) { int hlen; long blocksize; const char *header; if (humanflag) { header = SIZEHDR; hlen = 8; /* as the hardcoded field width of values */ } else { header = getbsize(&hlen, &blocksize); } if (totalflag == 0) (void)printf("%-15s %*s %8s %8s %8s\n", "Device", hlen, header, "Used", "Avail", "Capacity"); } static void print_swap_line(const char *swdevname, intmax_t nblks, intmax_t bused, intmax_t bavail, float bpercent) { char usedbuf[5]; char availbuf[5]; char sizebuf[5]; int hlen, pagesize; long blocksize; pagesize = getpagesize(); getbsize(&hlen, &blocksize); printf("%-15s ", swdevname); if (humanflag) { humanize_number(sizebuf, sizeof(sizebuf), CONVERT_BLOCKS(nblks), "", HN_AUTOSCALE, HN_B | HN_NOSPACE | HN_DECIMAL); humanize_number(usedbuf, sizeof(usedbuf), CONVERT_BLOCKS(bused), "", HN_AUTOSCALE, HN_B | HN_NOSPACE | HN_DECIMAL); humanize_number(availbuf, sizeof(availbuf), CONVERT_BLOCKS(bavail), "", HN_AUTOSCALE, HN_B | HN_NOSPACE | HN_DECIMAL); printf("%8s %8s %8s %5.0f%%\n", sizebuf, usedbuf, availbuf, bpercent); } else { printf("%*jd %8jd %8jd %5.0f%%\n", hlen, (intmax_t)CONVERT(nblks), (intmax_t)CONVERT(bused), (intmax_t)CONVERT(bavail), bpercent); } } static void print_swap(struct kvm_swap *ksw) { swtot.ksw_total += ksw->ksw_total; swtot.ksw_used += ksw->ksw_used; ++nswdev; if (totalflag == 0) print_swap_line(ksw->ksw_devname, ksw->ksw_total, ksw->ksw_used, ksw->ksw_total - ksw->ksw_used, (ksw->ksw_used * 100.0) / ksw->ksw_total); } static void print_swap_total(void) { int hlen, pagesize; long blocksize; pagesize = getpagesize(); getbsize(&hlen, &blocksize); if (totalflag) { blocksize = 1024 * 1024; (void)printf("%jdM/%jdM swap space\n", CONVERT(swtot.ksw_used), CONVERT(swtot.ksw_total)); } else if (nswdev > 1) { print_swap_line("Total", swtot.ksw_total, swtot.ksw_used, swtot.ksw_total - swtot.ksw_used, (swtot.ksw_used * 100.0) / swtot.ksw_total); } } static void swapmode_kvm(void) { struct kvm_swap kswap[16]; int i, n; n = kvm_getswapinfo(kd, kswap, sizeof kswap / sizeof kswap[0], SWIF_DEV_PREFIX); print_swap_header(); for (i = 0; i < n; ++i) print_swap(&kswap[i]); print_swap_total(); } static void swapmode_sysctl(void) { struct kvm_swap ksw; struct xswdev xsw; size_t mibsize, size; int mib[16], n; print_swap_header(); mibsize = sizeof mib / sizeof mib[0]; if (sysctlnametomib("vm.swap_info", mib, &mibsize) == -1) err(1, "sysctlnametomib()"); for (n = 0; ; ++n) { mib[mibsize] = n; size = sizeof xsw; if (sysctl(mib, mibsize + 1, &xsw, &size, NULL, 0) == -1) break; if (xsw.xsw_version != XSWDEV_VERSION) errx(1, "xswdev version mismatch"); if (xsw.xsw_dev == NODEV) snprintf(ksw.ksw_devname, sizeof ksw.ksw_devname, "<NFSfile>"); else snprintf(ksw.ksw_devname, sizeof ksw.ksw_devname, "/dev/%s", devname(xsw.xsw_dev, S_IFCHR)); ksw.ksw_used = xsw.xsw_used; ksw.ksw_total = xsw.xsw_nblks; ksw.ksw_flags = xsw.xsw_flags; print_swap(&ksw); } if (errno != ENOENT) err(1, "sysctl()"); print_swap_total(); } static void swapmode(void) { if (kd != NULL) swapmode_kvm(); else swapmode_sysctl(); }
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