git: a15cae4c746a - stable/14 - procstat(1): dump kqueues
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Date: Mon, 07 Apr 2025 01:29:01 UTC
The branch stable/14 has been updated by kib:
URL: https://cgit.FreeBSD.org/src/commit/?id=a15cae4c746ac076c5e273d8d31b16f25632a963
commit a15cae4c746ac076c5e273d8d31b16f25632a963
Author: Konstantin Belousov <kib@FreeBSD.org>
AuthorDate: 2025-02-26 00:29:49 +0000
Commit: Konstantin Belousov <kib@FreeBSD.org>
CommitDate: 2025-04-07 01:28:21 +0000
procstat(1): dump kqueues
(cherry picked from commit 28f4cf9217c27edea42c5c024c9e71816890bb3c)
---
usr.bin/procstat/Makefile | 1 +
usr.bin/procstat/procstat.c | 20 +++
usr.bin/procstat/procstat.h | 1 +
usr.bin/procstat/procstat_kqueue.c | 319 +++++++++++++++++++++++++++++++++++++
4 files changed, 341 insertions(+)
diff --git a/usr.bin/procstat/Makefile b/usr.bin/procstat/Makefile
index cfd8578c0dbc..a095e4e25ffd 100644
--- a/usr.bin/procstat/Makefile
+++ b/usr.bin/procstat/Makefile
@@ -12,6 +12,7 @@ SRCS= procstat.c \
procstat_cred.c \
procstat_cs.c \
procstat_files.c \
+ procstat_kqueue.c \
procstat_kstack.c \
procstat_penv.c \
procstat_ptlwpinfo.c \
diff --git a/usr.bin/procstat/procstat.c b/usr.bin/procstat/procstat.c
index 120a377bc756..cc9ddd473782 100644
--- a/usr.bin/procstat/procstat.c
+++ b/usr.bin/procstat/procstat.c
@@ -66,6 +66,7 @@ static void cmdopt_signals(int argc, char * const argv[]);
static void cmdopt_rusage(int argc, char * const argv[]);
static void cmdopt_files(int argc, char * const argv[]);
static void cmdopt_cpuset(int argc, char * const argv[]);
+static void cmdopt_kqueue(int argc, char * const argv[]);
static const char *progname;
@@ -104,6 +105,8 @@ static const struct procstat_cmd cmd_table[] = {
PS_CMP_PLURAL },
{ "file", "files", "[-C]", &procstat_files, &cmdopt_files,
PS_CMP_PLURAL },
+ { "kqueue", "kqueues", NULL, &procstat_kqueues, &cmdopt_kqueue,
+ PS_CMP_PLURAL },
{ "kstack", "kstack", "[-v]", &procstat_kstack, &cmdopt_verbose,
PS_CMP_NORMAL },
{ "pargs", "args", NULL, &procstat_pargs, &cmdopt_none,
@@ -632,3 +635,20 @@ cmdopt_cpuset(int argc, char * const argv[])
procstat_opts |= PS_OPT_PERTHREAD;
cmdopt_none(argc, argv);
}
+
+void
+cmdopt_kqueue(int argc, char * const argv[])
+{
+ int ch;
+
+ while ((ch = getopt(argc, argv, "v")) != -1) {
+ switch (ch) {
+ case 'v':
+ procstat_opts |= PS_OPT_VERBOSE;
+ break;
+ case '?':
+ default:
+ usage(NULL);
+ }
+ }
+}
diff --git a/usr.bin/procstat/procstat.h b/usr.bin/procstat/procstat.h
index f106fac79127..e075065315f8 100644
--- a/usr.bin/procstat/procstat.h
+++ b/usr.bin/procstat/procstat.h
@@ -64,6 +64,7 @@ void procstat_cred(struct procstat *prstat, struct kinfo_proc *kipp);
void procstat_cs(struct procstat *prstat, struct kinfo_proc *kipp);
void procstat_env(struct procstat *prstat, struct kinfo_proc *kipp);
void procstat_files(struct procstat *prstat, struct kinfo_proc *kipp);
+void procstat_kqueues(struct procstat *prstat, struct kinfo_proc *kipp);
void procstat_kstack(struct procstat *prstat, struct kinfo_proc *kipp);
void procstat_rlimitusage(struct procstat *procstat,
struct kinfo_proc *kipp);
diff --git a/usr.bin/procstat/procstat_kqueue.c b/usr.bin/procstat/procstat_kqueue.c
new file mode 100644
index 000000000000..ce9d2cb42fe2
--- /dev/null
+++ b/usr.bin/procstat/procstat_kqueue.c
@@ -0,0 +1,319 @@
+/*-
+ * SPDX-License-Identifier: BSD-2-Clause
+ *
+ * Copyright (c) 2025 The FreeBSD Foundation
+ *
+ * This software was developed by Konstantin Belousov <kib@FreeBSD.org>
+ * under sponsorship from the FreeBSD Foundation.
+ *
+ * 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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 <sys/param.h>
+#include <sys/event.h>
+#include <sys/sysctl.h>
+#include <sys/user.h>
+
+#include <err.h>
+#include <errno.h>
+#include <libprocstat.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <string.h>
+
+#include "procstat.h"
+
+static const char kqs[] = "kqueues";
+static const char kq[] = "kqueue";
+
+#define FILT_ELEM(name) [-EVFILT_##name] = #name,
+static const char *const filter_names[] = {
+ [0] = "invalid",
+ FILT_ELEM(READ)
+ FILT_ELEM(WRITE)
+ FILT_ELEM(AIO)
+ FILT_ELEM(VNODE)
+ FILT_ELEM(PROC)
+ FILT_ELEM(SIGNAL)
+ FILT_ELEM(TIMER)
+ FILT_ELEM(PROCDESC)
+ FILT_ELEM(FS)
+ FILT_ELEM(LIO)
+ FILT_ELEM(USER)
+ FILT_ELEM(SENDFILE)
+ FILT_ELEM(EMPTY)
+};
+#undef FILT_ELEM
+
+#define PK_FLAG_ELEM(fname, str) { .flag = fname, .dispstr = str }
+#define PK_NAME_ELEM(prefix, fname) { .flag = prefix##fname, .dispstr = #fname }
+#define PK_FLAG_LAST_ELEM() { .flag = -1, .dispstr = NULL }
+struct pk_elem {
+ unsigned int flag;
+ const char *dispstr;
+};
+
+static const struct pk_elem kn_status_names[] = {
+ PK_FLAG_ELEM(KNOTE_STATUS_ACTIVE, "A"),
+ PK_FLAG_ELEM(KNOTE_STATUS_QUEUED, "Q"),
+ PK_FLAG_ELEM(KNOTE_STATUS_DISABLED, "D"),
+ PK_FLAG_ELEM(KNOTE_STATUS_DETACHED, "d"),
+ PK_FLAG_ELEM(KNOTE_STATUS_KQUEUE, "K"),
+ PK_FLAG_LAST_ELEM(),
+};
+
+static const struct pk_elem ev_flags_names[] = {
+ PK_FLAG_ELEM(EV_ONESHOT, "O"),
+ PK_FLAG_ELEM(EV_CLEAR, "C"),
+ PK_FLAG_ELEM(EV_RECEIPT, "R"),
+ PK_FLAG_ELEM(EV_DISPATCH, "D"),
+ PK_FLAG_ELEM(EV_DROP, "d"),
+ PK_FLAG_ELEM(EV_FLAG1, "1"),
+ PK_FLAG_ELEM(EV_FLAG2, "2"),
+ PK_FLAG_LAST_ELEM(),
+};
+
+static char *
+procstat_kqueue_flags(const struct pk_elem *names, unsigned flags, bool commas)
+{
+ char *res;
+ const struct pk_elem *pl;
+ size_t len;
+ int i;
+ bool first;
+
+ first = true;
+ len = 0;
+ for (i = 0;; i++) {
+ pl = &names[i];
+ if (pl->flag == (unsigned)-1)
+ break;
+ if ((flags & pl->flag) != 0) {
+ if (first)
+ first = false;
+ else if (commas)
+ len += sizeof(",");
+ len += strlen(pl->dispstr);
+ }
+ }
+ len++;
+
+ res = malloc(len);
+ first = true;
+ res[0] = '\0';
+ for (i = 0;; i++) {
+ pl = &names[i];
+ if (pl->flag == (unsigned)-1)
+ break;
+ if ((flags & pl->flag) != 0) {
+ if (first)
+ first = false;
+ else if (commas)
+ strlcat(res, ",", len);
+ strlcat(res, pl->dispstr, len);
+ }
+ }
+
+ if (strlen(res) == 0)
+ return (strdup("-"));
+ return (res);
+}
+
+static const struct pk_elem rw_filter_names[] = {
+ PK_NAME_ELEM(NOTE_, LOWAT),
+ PK_NAME_ELEM(NOTE_, FILE_POLL),
+ PK_FLAG_LAST_ELEM(),
+};
+
+static const struct pk_elem user_filter_names[] = {
+ PK_NAME_ELEM(NOTE_, FFAND),
+ PK_NAME_ELEM(NOTE_, FFOR),
+ PK_NAME_ELEM(NOTE_, TRIGGER),
+ PK_FLAG_LAST_ELEM(),
+};
+
+static const struct pk_elem vnode_filter_names[] = {
+ PK_NAME_ELEM(NOTE_, DELETE),
+ PK_NAME_ELEM(NOTE_, WRITE),
+ PK_NAME_ELEM(NOTE_, EXTEND),
+ PK_NAME_ELEM(NOTE_, ATTRIB),
+ PK_NAME_ELEM(NOTE_, LINK),
+ PK_NAME_ELEM(NOTE_, RENAME),
+ PK_NAME_ELEM(NOTE_, REVOKE),
+ PK_NAME_ELEM(NOTE_, OPEN),
+ PK_NAME_ELEM(NOTE_, CLOSE),
+ PK_NAME_ELEM(NOTE_, CLOSE_WRITE),
+ PK_NAME_ELEM(NOTE_, READ),
+ PK_FLAG_LAST_ELEM(),
+};
+
+static const struct pk_elem proc_filter_names[] = {
+ PK_NAME_ELEM(NOTE_, EXIT),
+ PK_NAME_ELEM(NOTE_, FORK),
+ PK_NAME_ELEM(NOTE_, EXEC),
+ PK_NAME_ELEM(NOTE_, TRACK),
+ PK_NAME_ELEM(NOTE_, TRACKERR),
+ PK_NAME_ELEM(NOTE_, CHILD),
+ PK_FLAG_LAST_ELEM(),
+};
+
+static const struct pk_elem timer_filter_names[] = {
+ PK_NAME_ELEM(NOTE_, SECONDS),
+ PK_NAME_ELEM(NOTE_, MSECONDS),
+ PK_NAME_ELEM(NOTE_, USECONDS),
+ PK_NAME_ELEM(NOTE_, NSECONDS),
+ PK_NAME_ELEM(NOTE_, ABSTIME),
+ PK_FLAG_LAST_ELEM(),
+};
+
+#define FILT_ELEM(name) [-EVFILT_##name] = "EVFILT_"#name
+static const struct pk_elem *const filter_pk_names[] = {
+ [0] = NULL,
+ [-EVFILT_READ] = rw_filter_names,
+ [-EVFILT_WRITE] = rw_filter_names,
+ [-EVFILT_AIO] = rw_filter_names,
+ [-EVFILT_VNODE] = vnode_filter_names,
+ [-EVFILT_PROC] = proc_filter_names,
+ [-EVFILT_SIGNAL] = NULL,
+ [-EVFILT_TIMER] = timer_filter_names,
+ [-EVFILT_PROCDESC] = proc_filter_names,
+ [-EVFILT_FS] = NULL,
+ [-EVFILT_LIO] = rw_filter_names,
+ [-EVFILT_USER] = user_filter_names,
+ [-EVFILT_SENDFILE] = NULL,
+ [-EVFILT_EMPTY] = NULL,
+};
+
+static char *
+procstat_kqueue_fflags(int filter, unsigned fflags)
+{
+ const struct pk_elem *names;
+
+ names = NULL;
+ if (filter < 0 && -filter < (int)nitems(filter_pk_names))
+ names = filter_pk_names[-filter];
+ if (names == NULL)
+ return (strdup("-"));
+ return (procstat_kqueue_flags(names, fflags, true));
+}
+
+static const char *
+procstat_kqueue_get_filter_name(int filter)
+{
+ filter = -filter;
+ if (filter < 0 || filter >= (int)nitems(filter_names))
+ filter = 0;
+ return (filter_names[filter]);
+}
+
+static void
+procstat_kqueue(struct procstat *procstat, struct kinfo_proc *kipp, int fd,
+ bool verbose)
+{
+ struct kinfo_knote *kni, *knis;
+ char *flags, *fflags, *status;
+ unsigned int count, i, j;
+ char errbuf[_POSIX2_LINE_MAX];
+
+ errbuf[0] = '\0';
+ knis = procstat_get_kqueue_info(procstat, kipp, fd, &count, errbuf);
+ if (knis == NULL) {
+ warnx("%s\n", errbuf);
+ return;
+ }
+
+ for (i = 0; i < count; i++) {
+ kni = &knis[i];
+ flags = procstat_kqueue_flags(ev_flags_names,
+ kni->knt_event.flags, false);
+ fflags = procstat_kqueue_fflags(kni->knt_event.filter,
+ kni->knt_event.fflags);
+ status = procstat_kqueue_flags(kn_status_names,
+ kni->knt_status, false);
+ xo_open_instance(kq);
+ xo_emit("{dk:process_id/%7d} ", kipp->ki_pid);
+ xo_emit("{:kqueue_fd/%10d} ", fd);
+ xo_emit("{:filter/%8s} ", procstat_kqueue_get_filter_name(
+ kni->knt_event.filter));
+ xo_emit("{:ident/%10d} ", kni->knt_event.ident);
+ xo_emit("{:flags/%10s} ", flags);
+ xo_emit("{:fflags/%10s} ", fflags);
+ xo_emit("{:data/%#10jx} ", (uintmax_t)kni->knt_event.data);
+ xo_emit("{:udata/%10p} ", (uintmax_t)kni->knt_event.udata);
+ if (verbose) {
+ for (j = 0; j < nitems(kni->knt_event.ext); j++) {
+ xo_emit("{:ext%u/%#10jx} ", j,
+ (uintmax_t)kni->knt_event.ext[j]);
+ }
+ }
+ xo_emit("{:status/%10s}\n", status);
+ free(flags);
+ free(fflags);
+ free(status);
+ xo_close_instance(kq);
+ }
+
+ procstat_freekqinfo(procstat, knis);
+}
+
+void
+procstat_kqueues(struct procstat *procstat, struct kinfo_proc *kipp)
+{
+ struct filestat_list *fl;
+ struct filestat *f;
+ bool verbose;
+
+ verbose = (procstat_opts & PS_OPT_VERBOSE) != 0;
+ if ((procstat_opts & PS_OPT_NOHEADER) == 0) {
+ if (verbose) {
+ xo_emit("{T:/%7s %10s %8s %10s %10s %10s %10s %10s "
+ "%10s %10s %10s %10s %10s}\n",
+ "PID", "KQFD", "FILTER", "IDENT", "FLAGS", "FFLAGS",
+ "DATA", "UDATA", "EXT0", "EXT1","EXT2","EXT3",
+ "STATUS");
+ } else {
+ xo_emit("{T:/%7s %10s %8s %10s %10s %10s %10s %10s "
+ "%10s}\n",
+ "PID", "KQFD", "FILTER", "IDENT", "FLAGS", "FFLAGS",
+ "DATA", "UDATA", "STATUS");
+ }
+ }
+
+ xo_emit("{ek:process_id/%d}", kipp->ki_pid);
+
+ fl = procstat_getfiles(procstat, kipp, 0);
+ if (fl == NULL)
+ return;
+ xo_open_list(kqs);
+ STAILQ_FOREACH(f, fl, next) {
+ if (f->fs_type != PS_FST_TYPE_KQUEUE)
+ continue;
+ xo_emit("{ek:kqueue/%d}", f->fs_fd);
+ xo_open_list(kq);
+ procstat_kqueue(procstat, kipp, f->fs_fd, verbose);
+ xo_close_list(kq);
+ }
+ xo_close_list(kqs);
+ procstat_freefiles(procstat, fl);
+}