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File extrace-1575153394.f02ef88.obscpio of Package extrace
07070100000000000081A4000003E800000064000000015DE2EEF200000BA1000000000000000000000000000000000000002300000000extrace-1575153394.f02ef88/LICENSE/* pwait - wait for processes to terminate * extrace - trace exec() calls system-wide * * Copyright (C) 2014-2019 Leah Neukirchen <leah@vuxu.org> * * hacked from sources of: */ /* FreeBSD: head/bin/pwait/pwait.c 245506 2013-01-16 18:15:25Z delphij */ /*- * Copyright (c) 2004-2009, Jilles Tjoelker * 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. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 * COPYRIGHT OWNER 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. */ /* exec-notify, so you can watch your acrobat reader or vim executing "bash -c" * commands ;-) * Requires some 2.6.x Linux kernel with proc connector enabled. * * $ cc -Wall -ansi -pedantic -std=c99 exec-notify.c * * (C) 2007-2010 Sebastian Krahmer <krahmer@suse.de> original netlink handling * stolen from an proc-connector example, copyright folows: */ /* Copyright (C) Matt Helsley, IBM Corp. 2005 * Derived from fcctl.c by Guillaume Thouvenin * Original copyright notice follows: * * Copyright (C) 2005 BULL SA. * Written by Guillaume Thouvenin <guillaume.thouvenin@bull.net> * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ 07070100000001000081A4000003E800000064000000015DE2EEF200000203000000000000000000000000000000000000002400000000extrace-1575153394.f02ef88/MakefileALL=extrace pwait CFLAGS?=-g -O2 -Wall -Wno-switch -Wextra -Wwrite-strings -pedantic -ansi DESTDIR= PREFIX?=/usr/local BINDIR=$(PREFIX)/bin MANDIR=$(PREFIX)/share/man all: $(ALL) README: extrace.1 pwait.1 mandoc -Tutf8 $^ | col -bx >$@ cap: $(ALL) sudo setcap cap_net_admin+ep extrace cap_net_admin+ep pwait clean: FRC rm -f $(ALL) install: FRC all mkdir -p $(DESTDIR)$(BINDIR) $(DESTDIR)$(MANDIR)/man1 install -m0755 $(ALL) $(DESTDIR)$(BINDIR) install -m0644 $(ALL:=.1) $(DESTDIR)$(MANDIR)/man1 FRC: 07070100000002000081A4000003E800000064000000015DE2EEF200000239000000000000000000000000000000000000002300000000extrace-1575153394.f02ef88/NEWS.md## 0.7 (2019-02-08) * pwait: detect and warn for non-existing PID. * extract: detect and error for non-existing PID in `-p`. * Bug fixes. ## 0.6 (2018-06-19) * Add `-u` to print owner of process. * Improved /proc/$PID/stat parser. ## 0.5 (2018-03-23) * Detect and report out of order and lost messages. * Ensure cmdline is read first. * Use openat() for speedup. * Remove custom SIGINT handler. ## 0.4 (2017-08-21) * Add `-t` for tracing process exit and duration. ## 0.3.1 (2017-04-25) * Bug fix release ## 0.3 (2016-06-14) * Add `-e` to output environment 07070100000003000081A4000003E800000064000000015DE2EEF200000D55000000000000000000000000000000000000002200000000extrace-1575153394.f02ef88/READMEEXTRACE(1) General Commands Manual EXTRACE(1) NAME extrace – trace exec() calls system-wide SYNOPSIS extrace [-deflqtu] [-o file] [-p pid | cmd ...] DESCRIPTION extrace traces all program executions occurring on a system. The options are as follows: -d Print the current working directory of the new process. -e Print environment of process, or ‘-’ if unreadable. -f Generate flat output without indentation. By default, the line indentation reflects the process hierarchy. -l Resolve full path of the executable. By default, argv[0] is shown. -q Suppress printing of exec(3) arguments. -t Also display process exit status and duration. -u Also display the user running the process. -o file Redirect trace output to file. -p pid Only trace exec(3) calls descendant of pid. cmd ... Run cmd ... and only trace descendants of this command. By default, all exec(3) calls are traced globally. EXIT STATUS The extrace utility exits 0 on success, and >0 if an error occurs. ERRORS Check these prerequisites if you see this error: binding sk_nl error: Operation not permitted extrace requires special permissions to run, either root or the Linux CAP_NET_ADMIN capability. extrace only works on Linux kernels with the kernel options CONFIG_CONNECTOR=y CONFIG_PROC_EVENTS=y SEE ALSO fatrace(1), ps(1), pwait(1), strace(1) AUTHORS Leah Neukirchen <leah@vuxu.org> May contain traces of code from Guillaume Thouvenin, Matt Helsley, and Sebastian Krahmer. BUGS While process tracing is exact, looking up all information is inherently sensitive to race conditions. In doubt, you can only trust the PID was written correctly. LICENSE extrace is licensed under the terms of the GPLv2. Void Linux June 19, 2018 Void Linux ------------------------------------------------------------------------------ PWAIT(1) General Commands Manual PWAIT(1) NAME pwait – wait for processes to terminate SYNOPSIS pwait [-v] [-c] pid ... DESCRIPTION pwait waits until each of the given processes has terminated. The options are as follows: -v Print the exit status when each process terminates. -c Return 111 if any process exited non-successfully. EXIT STATUS The pwait utility exits 0 on success, and >0 if an error occurs. Invalid pids elicit a warning message but are otherwise ignored. ERRORS Check these prerequisites if you see this error: binding sk_nl error: Operation not permitted pwait requires special permissions to run, either root or the Linux CAP_NET_ADMIN capability. pwait only works on Linux kernels with the kernel options CONFIG_CONNECTOR=y CONFIG_PROC_EVENTS=y SEE ALSO extrace(1), kill(1), pkill(1), ps(1), wait(1) AUTHORS Leah Neukirchen <leah@vuxu.org> Built upon code from FreeBSD pwait written by Jilles Tjoelker. LICENSE pwait is licensed under the terms of the GPLv2. Void Linux September 17, 2018 Void Linux 07070100000004000081ED000003E800000064000000015DE2EEF200000BD9000000000000000000000000000000000000002700000000extrace-1575153394.f02ef88/extrace-bpf#!/usr/bin/env ruby require 'optparse' require 'etc' # TODO: -p / cmd... (how?) BPF = <<'EOF' BEGIN { printf("SEP2\n"); } tracepoint:syscalls:sys_enter_execve { printf("%ld +%d %d", elapsed, pid, uid); join(args->argv, "SEP1"); printf("SEP2\n"); } tracepoint:syscalls:sys_enter_exit_group { printf("%ld -%d %d\nSEP2\n", elapsed, pid, args->error_code); } EOF SEP1 = "\xff\xff\xff".b SEP2 = "\xff\xfe\xff".b Procc = Struct.new(:pid, :uid, :name, :args, :start_time, :ppid, :depth) PIDS = {} def pid_depth(pid) procc = PIDS[pid] if procc && procc.depth procc.depth else procc = (PIDS[pid] ||= Procc.new(pid)) stat = File.read("/proc/#{pid}/stat").b if stat =~ /.*\) . (\d+)/ ppid = $1.to_i if ppid == 0 return 0 else procc.ppid = ppid procc.depth = pid_depth(ppid) + 1 end end end rescue Errno::ENOENT, Errno::ESRCH => e puts "failed to get pid #{pid} info: #{e}" 0 end def fmtcmd(c) if c.empty? || c =~ /[\001-\040`^#*\[\]|\\?${}()'\"<>&;\177]/ "'" + c.gsub("'", "'\\''").gsub("\n", "'$'\\n''") + "'" else c end end def fmtcmds(cmds) cmds.map { |cmd| fmtcmd(cmd) }.join(' ') end params = ARGV.getopts("deflqtu") dflag = params['d'] eflag = params['e'] fflag = params['f'] lflag = params['l'] qflag = params['q'] tflag = params['t'] uflag = params['u'] IO.popen(["bpftrace", "-e", BPF.gsub("SEP1", SEP1).gsub("SEP2", SEP2)], "r:BINARY") { |output| while line = output.gets("\n#{SEP2}\n") line.chomp!("\n#{SEP2}\n") case line when /\A(\d+) \+(\d+) (\d+)/ elapsed = $1.to_i pid = $2.to_i uid = $3.to_i comm = $'.split(SEP1) next unless comm.first PIDS[pid] = Procc.new(pid, uid, comm.first, comm[1..-1], elapsed) print " " * pid_depth(pid) unless fflag print pid print "+" if tflag print " " print "<#{Etc.getpwuid(uid).name}> " if uflag if dflag print (File.readlink("/proc/#{pid}/cwd") rescue "-") print " % " end comm[0] = (File.readlink("/proc/#{pid}/exe") rescue comm[0]) if lflag if qflag print fmtcmd(comm[0]) else print fmtcmds(comm) end if eflag print " " print (File.read("/proc/#{pid}/environ") rescue "-"). b.split("\x00").map { |e| if e =~ /\A[a-zA-Z0-9_]+=/ $& + fmtcmd($') else fmtcmd(e) end }.join(" ") end puts when /\A(\d+) -(\d+) (\d+)/ elapsed = $1.to_i pid = $2.to_i status = $3.to_i if procc = PIDS[pid] PIDS.delete(pid) next unless procc.name if tflag dur = (elapsed - procc.start_time) / 1e9 print " " * pid_depth(pid) unless fflag puts "#{pid}- #{procc.name} exited status=#{status} time=#{"%.3f" % dur}s" end end when /^Attaching/ # ignore else warn "can't parse #{line}" end end } 07070100000005000081A4000003E800000064000000015DE2EEF200000750000000000000000000000000000000000000002500000000extrace-1575153394.f02ef88/extrace.1.Dd June 19, 2018 .Dt EXTRACE 1 .Os .Sh NAME .Nm extrace .Nd trace exec() calls system-wide .Sh SYNOPSIS .Nm .Op Fl deflqtu .Op Fl o Ar file .Op Fl p Ar pid | cmd\ ... .Sh DESCRIPTION .Nm traces all program executions occurring on a system. .Pp The options are as follows: .Bl -tag -width Ds .It Fl d Print the current working directory of the new process. .It Fl e Print environment of process, or .Sq Li - if unreadable. .It Fl f Generate flat output without indentation. By default, the line indentation reflects the process hierarchy. .It Fl l Resolve full path of the executable. By default, .Li "argv[0]" is shown. .It Fl q Suppress printing of .Xr exec 3 arguments. .It Fl t Also display process exit status and duration. .It Fl u Also display the user running the process. .It Fl o Ar file Redirect trace output to .Ar file . .It Fl p Ar pid Only trace .Xr exec 3 calls descendant of .Ar pid . .It Ar cmd\ ... Run .Ar cmd\ ... and only trace descendants of this command. .Pp By default, all .Xr exec 3 calls are traced globally. .El .Sh EXIT STATUS .Ex -std .Sh ERRORS Check these prerequisites if you see this error: .Bd -literal -offset Ds binding sk_nl error: Operation not permitted .Ed .Pp .Nm requires special permissions to run, either root or the Linux .Li "CAP_NET_ADMIN" capability. .Pp .Nm only works on Linux kernels with the kernel options .Bd -literal -offset Ds CONFIG_CONNECTOR=y CONFIG_PROC_EVENTS=y .Ed .Sh SEE ALSO .Xr fatrace 1 , .Xr ps 1 , .Xr pwait 1 , .Xr strace 1 .Sh AUTHORS .An Leah Neukirchen Aq Mt leah@vuxu.org .Pp May contain traces of code from Guillaume Thouvenin, Matt Helsley, and Sebastian Krahmer. .Sh BUGS While process tracing is exact, looking up all information is inherently sensitive to race conditions. In doubt, you can only trust the PID was written correctly. .Sh LICENSE .Nm is licensed under the terms of the GPLv2. 07070100000006000081A4000003E800000064000000015DE2EEF200003652000000000000000000000000000000000000002500000000extrace-1575153394.f02ef88/extrace.c/* extrace - trace exec() calls system-wide * * Requires CONFIG_CONNECTOR=y and CONFIG_PROC_EVENTS=y. * Requires root or "setcap cap_net_admin+ep extrace". * * Usage: extrace [-deflqu] [-o FILE] [-p PID|CMD...] * default: show all exec(), globally * -p PID only show exec() descendant of PID * CMD... run CMD... and only show exec() descendant of it * -o FILE log to FILE instead of standard output * -d print cwd of process * -e print environment of process * -f flat output: no indentation * -l print full path of argv[0] * -q don't print exec() arguments * -u print user of process * * Copyright (C) 2014-2019 Leah Neukirchen <leah@vuxu.org> * * hacked from sources of: */ /* exec-notify, so you can watch your acrobat reader or vim executing "bash -c" * commands ;-) * Requires some 2.6.x Linux kernel with proc connector enabled. * * $ cc -Wall -ansi -pedantic -std=c99 exec-notify.c * * (C) 2007-2010 Sebastian Krahmer <krahmer@suse.de> original netlink handling * stolen from an proc-connector example, copyright folows: */ /* Copyright (C) Matt Helsley, IBM Corp. 2005 * Derived from fcctl.c by Guillaume Thouvenin * Original copyright notice follows: * * Copyright (C) 2005 BULL SA. * Written by Guillaume Thouvenin <guillaume.thouvenin@bull.net> * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ #define _XOPEN_SOURCE 700 #include <linux/cn_proc.h> #include <linux/connector.h> #include <linux/netlink.h> #include <sys/socket.h> #include <sys/stat.h> #include <sys/types.h> #include <sys/wait.h> #include <errno.h> #include <fcntl.h> #include <limits.h> #include <pwd.h> #include <signal.h> #include <stdint.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #include <time.h> #include <unistd.h> #define max(x, y) ((y) < (x) ? (x) : (y)) #define min(x, y) ((y) > (x) ? (x) : (y)) #define SEND_MESSAGE_LEN (NLMSG_LENGTH(sizeof (struct cn_msg) + \ sizeof (enum proc_cn_mcast_op))) #define RECV_MESSAGE_LEN (NLMSG_LENGTH(sizeof (struct cn_msg) + \ sizeof (struct proc_event))) #define SEND_MESSAGE_SIZE (NLMSG_SPACE(SEND_MESSAGE_LEN)) #define RECV_MESSAGE_SIZE (NLMSG_SPACE(RECV_MESSAGE_LEN)) #define BUFF_SIZE (max(max(SEND_MESSAGE_SIZE, RECV_MESSAGE_SIZE), 1024)) #define MIN_RECV_SIZE (min(SEND_MESSAGE_SIZE, RECV_MESSAGE_SIZE)) #define CMDLINE_MAX 32768 #define CMDLINE_DB_MAX 32 pid_t parent = 1; int flat = 0; int run = 0; int full_path = 0; int show_args = 1; int show_cwd = 0; int show_env = 0; int show_exit = 0; int show_user = 0; FILE *output; sig_atomic_t quit = 0; #define CPU_MAX 4096 uint32_t last_seq[CPU_MAX]; #define PID_DB_SIZE 1024 struct { pid_t pid; int depth; uint64_t start; char cmdline[CMDLINE_DB_MAX]; } pid_db[PID_DB_SIZE]; static int open_proc_dir(pid_t pid) { char name[48]; snprintf(name, sizeof name, "/proc/%d", pid); return open(name, O_DIRECTORY); } static int pid_depth(pid_t pid) { pid_t ppid = 0; char name[PATH_MAX]; char buf[2048]; char *s; int fd, d, i; snprintf(name, sizeof name, "/proc/%d/stat", pid); if ((fd = open(name, O_RDONLY)) < 0) return 0; if (read(fd, buf, sizeof buf) <= 0) return 0; close(fd); s = strrchr(buf, ')'); /* find end of COMM (recommended way) */ if (!s) return 0; while (*++s == ' ') ; /* skip over STATE */ while (*++s == ' ') ; errno = 0; ppid = strtol(s, 0, 10); /* parse PPID */ if (errno != 0) return 0; if (ppid == parent) return 0; if (ppid == 0) return -1; /* a parent we are not interested in */ for (i = 0; i < PID_DB_SIZE - 1; i++) if (pid_db[i].pid == ppid) d = pid_db[i].depth; if (i == PID_DB_SIZE - 1) d = pid_depth(ppid); /* we need to recurse */ if (d == -1) return -1; return d + 1; } static const char * sig2name(int sig) { switch (sig) { #define X(s) case s: return #s; /* signals defined in POSIX.1-1990 */ X(SIGHUP) X(SIGINT) X(SIGQUIT) X(SIGILL) X(SIGABRT) X(SIGFPE) X(SIGKILL) X(SIGSEGV) X(SIGUSR1) X(SIGUSR2) X(SIGPIPE) X(SIGALRM) X(SIGTERM) X(SIGCHLD) X(SIGCONT) X(SIGSTOP) X(SIGTSTP) X(SIGTTIN) X(SIGTTOU) /* signals defined in POSIX.1-2001 */ X(SIGBUS) X(SIGPOLL) X(SIGPROF) X(SIGSYS) X(SIGTRAP) X(SIGURG) X(SIGVTALRM) X(SIGXCPU) X(SIGXFSZ) /* other signals */ #ifdef SIGSTKFLT X(SIGSTKFLT) /* Stack fault on coprocessor (unused) */ #endif #ifdef SIGWINCH X(SIGWINCH) /* Window resize signal (4.3BSD) */ #endif #ifdef SIGPWR X(SIGPWR) /* Power failure (System V) */ #endif #undef X default: { static char buf[8]; snprintf(buf, sizeof buf, "SIG%d", sig); return buf; } } } static void sigchld(int sig) { (void)sig; while (waitpid(-1, NULL, WNOHANG) > 0) ; quit = 1; } static void print_shquoted(const char *s) { if (*s && !strpbrk(s, "\001\002\003\004\005\006\007\010" "\011\012\013\014\015\016\017\020" "\021\022\023\024\025\026\027\030" "\031\032\033\034\035\036\037\040" "`^#*[]=|\\?${}()'\"<>&;\177")) { fprintf(output, "%s", s); return; } putc('\'', output); for (; *s; s++) if (*s == '\'') fprintf(output, "'\\''"); else if (*s == '\n') fprintf(output, "'$'\\n''"); else putc(*s, output); putc('\'', output); } static void print_env(int proc_dir_fd) { int fd; FILE *env; fprintf(output, " "); fd = openat(proc_dir_fd, "environ", O_RDONLY); if (fd >= 0 && (env = fdopen(fd, "r"))) { char *line = 0, *eq = 0; size_t linelen = 0; while (getdelim(&line, &linelen, '\0', env) >= 0) { putc(' ', output); if ((eq = strchr(line, '='))) { /* print split so = doesn't trigger escaping. */ *eq = 0; print_shquoted(line); putc('=', output); print_shquoted(eq+1); } else { /* weird env entry without equal sign. */ print_shquoted(line); } } free(line); fclose(env); } else { fprintf(output, " -"); } } static void handle_msg(struct cn_msg *cn_hdr) { char cmdline[CMDLINE_MAX]; char exe[PATH_MAX]; char cwd[PATH_MAX]; char *argvrest; int r = 0, r2 = 0, r3 = 0, fd, d; struct proc_event *ev = (struct proc_event *)cn_hdr->data; if (ev->what == PROC_EVENT_EXEC) { pid_t pid = ev->event_data.exec.process_pid; int i = 0; int proc_dir_fd = open_proc_dir(pid); if (proc_dir_fd < 0) { fprintf(stderr, "extrace: process vanished before notification: pid %d\n", pid); return; } memset(&cmdline, 0, sizeof cmdline); fd = openat(proc_dir_fd, "cmdline", O_RDONLY); if (fd >= 0) { r = read(fd, cmdline, sizeof cmdline); close(fd); if (r > 0) cmdline[r] = 0; if (full_path) { r2 = readlinkat(proc_dir_fd, "exe", exe, sizeof exe); if (r2 > 0) exe[r2] = 0; } argvrest = strchr(cmdline, 0) + 1; } d = pid_depth(pid); if (d < 0) { if (*cmdline) { fprintf(stderr, "extrace: process vanished before we found its parent: pid %d: %s\n", pid, cmdline); } else { fprintf(stderr, "extrace: process vanished without a name: pid %d\n", pid); } close(proc_dir_fd); return; } if (show_exit || !flat) { for (i = 0; i < PID_DB_SIZE - 1; i++) if (pid_db[i].pid == 0) break; if (i == PID_DB_SIZE - 1) fprintf(stderr, "extrace: warning: pid_db of " "size %d overflowed\n", PID_DB_SIZE); pid_db[i].pid = pid; pid_db[i].depth = d; pid_db[i].start = ev->timestamp_ns; } if (show_cwd) { r3 = readlinkat(proc_dir_fd, "cwd", cwd, sizeof cwd); if (r3 > 0) cwd[r3] = 0; } if (!flat) fprintf(output, "%*s", 2*d, ""); fprintf(output, "%d", pid); if (show_exit) { putc('+', output); snprintf(pid_db[i].cmdline, CMDLINE_DB_MAX, "%s", cmdline); } if (show_user) { struct stat st; struct passwd *p; if (fstat(proc_dir_fd, &st) < 0) st.st_uid = -1; if ((p = getpwuid(st.st_uid))) fprintf(output," <%s>", p->pw_name); else fprintf(output," <%d>", st.st_uid); } putc(' ', output); if (show_cwd) { print_shquoted(cwd); fprintf(output, " %% "); } if (full_path) print_shquoted(exe); else print_shquoted(cmdline); if (show_args && r > 0) { while (argvrest - cmdline < r) { putc(' ', output); print_shquoted(argvrest); argvrest = strchr(argvrest, 0)+1; } } if (r == sizeof cmdline) fprintf(output, "... <truncated>"); if (show_env) print_env(proc_dir_fd); close(proc_dir_fd); fprintf(output, "\n"); fflush(output); } else if ((show_exit || !flat) && ev->what == PROC_EVENT_EXIT) { pid_t pid = ev->event_data.exit.process_pid; int i; for (i = 0; i < PID_DB_SIZE; i++) if (pid_db[i].pid == pid) break; if (i == PID_DB_SIZE) return; pid_db[i].pid = 0; if (!show_exit) return; if (!flat) fprintf(output, "%*s", 2*pid_db[i].depth, ""); fprintf(output, "%d- ", pid); print_shquoted(pid_db[i].cmdline); if (!WIFEXITED(ev->event_data.exit.exit_code)) fprintf(output, " exited signal=%s", sig2name(WTERMSIG(ev->event_data.exit.exit_code))); else fprintf(output, " exited status=%d", WEXITSTATUS(ev->event_data.exit.exit_code)); fprintf(output, " time=%.3fs\n", (ev->timestamp_ns - pid_db[i].start) / 1e9); fflush(output); } } static pid_t parse_pid(char *s) { pid_t pid; char *end; errno = 0; pid = strtol(s, &end, 10); if (pid <= 0 || *end || errno != 0) { fprintf(stderr, "extrace: %s: invalid process id\n", s); exit(1); } errno = 0; kill(pid, 0); if (errno == ESRCH) { fprintf(stderr, "extrace: %s: no such process\n", s); exit(1); } return pid; } int main(int argc, char *argv[]) { int sk_nl; struct sockaddr_nl my_nla, kern_nla, from_nla; socklen_t from_nla_len; char buff[BUFF_SIZE]; struct nlmsghdr *nl_hdr, *nlh; struct cn_msg *cn_hdr, *cmsg; struct proc_event *cproc; enum proc_cn_mcast_op *mcop_msg; size_t recv_len = 0; int rc = -1, opt; output = stdout; while ((opt = getopt(argc, argv, "+deflo:p:qtwu")) != -1) switch (opt) { case 'd': show_cwd = 1; break; case 'e': show_env = 1; break; case 'f': flat = 1; break; case 'l': full_path = 1; break; case 'p': parent = parse_pid(optarg); break; case 'q': show_args = 0; break; case 't': show_exit = 1; break; case 'o': output = fopen(optarg, "w"); if (!output) { perror("fopen"); exit(1); } break; case 'w': /* obsoleted, ignore */; break; case 'u': show_user = 1; break; default: goto usage; } if (parent != 1 && optind != argc) { usage: fprintf(stderr, "Usage: extrace [-deflqt] [-o FILE] [-p PID|CMD...]\n"); exit(1); } sk_nl = socket(PF_NETLINK, SOCK_DGRAM, NETLINK_CONNECTOR); if (sk_nl == -1) { perror("socket sk_nl error"); exit(1); } my_nla.nl_family = AF_NETLINK; my_nla.nl_groups = CN_IDX_PROC; my_nla.nl_pid = getpid(); kern_nla.nl_family = AF_NETLINK; kern_nla.nl_groups = CN_IDX_PROC; kern_nla.nl_pid = 1; if (bind(sk_nl, (struct sockaddr *)&my_nla, sizeof my_nla) == -1) { perror("binding sk_nl error"); goto close_and_exit; } nl_hdr = (struct nlmsghdr *)buff; cn_hdr = (struct cn_msg *)NLMSG_DATA(nl_hdr); mcop_msg = (enum proc_cn_mcast_op *)&cn_hdr->data[0]; memset(buff, 0, sizeof buff); *mcop_msg = PROC_CN_MCAST_LISTEN; nl_hdr->nlmsg_len = SEND_MESSAGE_LEN; nl_hdr->nlmsg_type = NLMSG_DONE; nl_hdr->nlmsg_flags = 0; nl_hdr->nlmsg_seq = 0; nl_hdr->nlmsg_pid = getpid(); cn_hdr->id.idx = CN_IDX_PROC; cn_hdr->id.val = CN_VAL_PROC; cn_hdr->seq = 0; cn_hdr->ack = 0; cn_hdr->len = sizeof (enum proc_cn_mcast_op); if (send(sk_nl, nl_hdr, nl_hdr->nlmsg_len, 0) != nl_hdr->nlmsg_len) { printf("failed to send proc connector mcast ctl op!\n"); goto close_and_exit; } if (*mcop_msg == PROC_CN_MCAST_IGNORE) { rc = 0; goto close_and_exit; } if (optind != argc) { pid_t child; parent = getpid(); signal(SIGCHLD, sigchld); child = fork(); if (child == -1) { perror("fork"); goto close_and_exit; } if (child == 0) { execvp(argv[optind], argv+optind); perror("execvp"); goto close_and_exit; } } rc = 0; while (!quit) { cmsg = (struct cn_msg *)(buff + sizeof (struct nlmsghdr)); cproc = (struct proc_event *)(buff + sizeof (struct nlmsghdr) + sizeof (struct cn_msg)); memset(buff, 0, sizeof buff); from_nla_len = sizeof from_nla; nlh = (struct nlmsghdr *)buff; memcpy(&from_nla, &kern_nla, sizeof from_nla); recv_len = recvfrom(sk_nl, buff, BUFF_SIZE, 0, (struct sockaddr *)&from_nla, &from_nla_len); if (from_nla.nl_pid != 0 || recv_len < 1) continue; if (cproc->what == PROC_EVENT_NONE) continue; if (last_seq[cproc->cpu] && cmsg->seq != last_seq[cproc->cpu] + 1) fprintf(stderr, "extrace: out of order message on cpu %d\n", cproc->cpu); last_seq[cproc->cpu] = cmsg->seq; while (NLMSG_OK(nlh, recv_len)) { if (nlh->nlmsg_type == NLMSG_NOOP) continue; if (nlh->nlmsg_type == NLMSG_ERROR || nlh->nlmsg_type == NLMSG_OVERRUN) break; handle_msg(NLMSG_DATA(nlh)); if (nlh->nlmsg_type == NLMSG_DONE) break; nlh = NLMSG_NEXT(nlh, recv_len); } } close_and_exit: close(sk_nl); return rc; } 07070100000007000081A4000003E800000064000000015DE2EEF200000452000000000000000000000000000000000000002300000000extrace-1575153394.f02ef88/pwait.1.Dd September 17, 2018 .Dt PWAIT 1 .Os .Sh NAME .Nm pwait .Nd wait for processes to terminate .Sh SYNOPSIS .Nm .Op Fl v .Op Fl c .Ar pid\ ... .Sh DESCRIPTION .Nm pwait waits until each of the given processes has terminated. .Pp The options are as follows: .Bl -tag -width Ds .It Fl v Print the exit status when each process terminates. .It Fl c Return 111 if any process exited non-successfully. .El .Sh EXIT STATUS .Ex -std .Pp Invalid pids elicit a warning message but are otherwise ignored. .Sh ERRORS Check these prerequisites if you see this error: .Bd -literal -offset Ds binding sk_nl error: Operation not permitted .Ed .Pp .Nm requires special permissions to run, either root or the Linux .Li "CAP_NET_ADMIN" capability. .Pp .Nm only works on Linux kernels with the kernel options .Bd -literal -offset Ds CONFIG_CONNECTOR=y CONFIG_PROC_EVENTS=y .Ed .Sh SEE ALSO .Xr extrace 1 , .Xr kill 1 , .Xr pkill 1 , .Xr ps 1 , .Xr wait 1 .Sh AUTHORS .An Leah Neukirchen Aq Mt leah@vuxu.org .Pp Built upon code from .Fx .Nm written by Jilles Tjoelker. .Sh LICENSE .Nm is licensed under the terms of the GPLv2. 07070100000008000081A4000003E800000064000000015DE2EEF200002047000000000000000000000000000000000000002300000000extrace-1575153394.f02ef88/pwait.c/* pwait - wait for processes to terminate * * Requires CONFIG_CONNECTOR=y and CONFIG_PROC_EVENTS=y. * Requires root or "setcap cap_net_admin+ep pwait". * * Usage: pwait [-v] [-c] PID... * -v Print the exit status when each process terminates. * -c Check for PIDs to exit successfully, else return 111. * * Copyright (C) 2014-2019 Leah Neukirchen <leah@vuxu.org> * * hacked from sources of: */ /* FreeBSD: head/bin/pwait/pwait.c 245506 2013-01-16 18:15:25Z delphij */ /*- * Copyright (c) 2004-2009, Jilles Tjoelker * 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. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 * COPYRIGHT OWNER 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. */ /* exec-notify, so you can watch your acrobat reader or vim executing "bash -c" * commands ;-) * Requires some 2.6.x Linux kernel with proc connector enabled. * * $ cc -Wall -ansi -pedantic -std=c99 exec-notify.c * * (C) 2007-2010 Sebastian Krahmer <krahmer@suse.de> original netlink handling * stolen from an proc-connector example, copyright folows: */ /* Copyright (C) Matt Helsley, IBM Corp. 2005 * Derived from fcctl.c by Guillaume Thouvenin * Original copyright notice follows: * * Copyright (C) 2005 BULL SA. * Written by Guillaume Thouvenin <guillaume.thouvenin@bull.net> * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ #define _XOPEN_SOURCE 700 #include <errno.h> #include <fcntl.h> #include <limits.h> #include <signal.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #include <unistd.h> #include <sys/socket.h> #include <sys/types.h> #include <sys/wait.h> #include <linux/cn_proc.h> #include <linux/connector.h> #include <linux/netlink.h> #define max(x, y) ((y) < (x) ? (x) : (y)) #define min(x, y) ((y) > (x) ? (x) : (y)) #define SEND_MESSAGE_LEN (NLMSG_LENGTH(sizeof (struct cn_msg) + \ sizeof (enum proc_cn_mcast_op))) #define RECV_MESSAGE_LEN (NLMSG_LENGTH(sizeof (struct cn_msg) + \ sizeof (struct proc_event))) #define SEND_MESSAGE_SIZE (NLMSG_SPACE(SEND_MESSAGE_LEN)) #define RECV_MESSAGE_SIZE (NLMSG_SPACE(RECV_MESSAGE_LEN)) #define BUFF_SIZE (max(max(SEND_MESSAGE_SIZE, RECV_MESSAGE_SIZE), 1024)) #define MIN_RECV_SIZE (min(SEND_MESSAGE_SIZE, RECV_MESSAGE_SIZE)) sig_atomic_t quit = 0; static void sigint(int sig) { (void)sig; quit = 1; } static void display(pid_t pid, int status) { if (WIFEXITED(status)) printf("%ld: exited with status %d.\n", (long)pid, WEXITSTATUS(status)); else if (WIFSIGNALED(status)) printf("%ld: killed by signal %d.\n", (long)pid, WTERMSIG(status)); else printf("%ld: terminated.\n", (long)pid); } int main(int argc, char *argv[]) { int sk_nl; struct sockaddr_nl my_nla, kern_nla, from_nla; socklen_t from_nla_len; char buff[BUFF_SIZE]; struct nlmsghdr *nl_hdr, *nlh; struct cn_msg *cn_hdr; struct proc_event *ev; enum proc_cn_mcast_op *mcop_msg; size_t recv_len = 0; int opt; int n, m; pid_t *pids; pid_t pid; char *end; int verbose = 0; int check = 0; int seen = 0; int rc = -1; while ((opt = getopt(argc, argv, "+cv")) != -1) switch (opt) { case 'c': check = 1; break; case 'v': verbose = 1; break; default: goto usage; } argc -= optind; argv += optind; if (argc == 0) { usage: fprintf(stderr, "Usage: pwait [-v] [-c] PID...\n"); exit(1); } pids = calloc(argc, sizeof (pid_t)); if (!pids) { perror("pwait: calloc"); exit(1); } for (n = m = 0; n < argc; n++) { errno = 0; pid = strtol(argv[n], &end, 10); if (pid <= 0 || *end || errno != 0) { fprintf(stderr, "pwait: %s: invalid process id\n", argv[n]); continue; } pids[m++] = pid; } if (m == 0) exit(1); sk_nl = socket(PF_NETLINK, SOCK_DGRAM, NETLINK_CONNECTOR); if (sk_nl == -1) { perror("pwait: socket sk_nl error"); exit(1); } my_nla.nl_family = AF_NETLINK; my_nla.nl_groups = CN_IDX_PROC; my_nla.nl_pid = getpid(); kern_nla.nl_family = AF_NETLINK; kern_nla.nl_groups = CN_IDX_PROC; kern_nla.nl_pid = 1; if (bind(sk_nl, (struct sockaddr *)&my_nla, sizeof my_nla) == -1) { perror("pwait: binding sk_nl error"); goto close_and_exit; } nl_hdr = (struct nlmsghdr *)buff; cn_hdr = (struct cn_msg *)NLMSG_DATA(nl_hdr); mcop_msg = (enum proc_cn_mcast_op *)&cn_hdr->data[0]; memset(buff, 0, sizeof buff); *mcop_msg = PROC_CN_MCAST_LISTEN; nl_hdr->nlmsg_len = SEND_MESSAGE_LEN; nl_hdr->nlmsg_type = NLMSG_DONE; nl_hdr->nlmsg_flags = 0; nl_hdr->nlmsg_seq = 0; nl_hdr->nlmsg_pid = getpid(); cn_hdr->id.idx = CN_IDX_PROC; cn_hdr->id.val = CN_VAL_PROC; cn_hdr->seq = 0; cn_hdr->ack = 0; cn_hdr->len = sizeof (enum proc_cn_mcast_op); if (send(sk_nl, nl_hdr, nl_hdr->nlmsg_len, 0) != nl_hdr->nlmsg_len) { fprintf(stderr, "pwait: failed to send proc connector mcast ctl op!\n"); goto close_and_exit; } if (*mcop_msg == PROC_CN_MCAST_IGNORE) goto close_and_exit; quit = 1; for (n = 0; n < m; n++) { errno = 0; kill(pids[n], 0); if (errno == ESRCH) { fprintf(stderr, "pwait: %d: no such process\n", pids[n]); pids[n] = 0; continue; } quit = 0; } if (quit) exit(1); signal(SIGINT, sigint); rc = 0; while (!quit) { memset(buff, 0, sizeof buff); from_nla_len = sizeof from_nla; nlh = (struct nlmsghdr *)buff; memcpy(&from_nla, &kern_nla, sizeof from_nla); recv_len = recvfrom(sk_nl, buff, BUFF_SIZE, 0, (struct sockaddr *)&from_nla, &from_nla_len); if (from_nla.nl_pid != 0 || recv_len < 1) continue; while (NLMSG_OK(nlh, recv_len)) { if (nlh->nlmsg_type == NLMSG_NOOP) continue; if (nlh->nlmsg_type == NLMSG_ERROR || nlh->nlmsg_type == NLMSG_OVERRUN) break; ev = (struct proc_event *) ((struct cn_msg *)NLMSG_DATA(nlh))->data; if (ev->what == PROC_EVENT_EXIT) { int status = ev->event_data.exit.exit_code; pid_t pid = ev->event_data.exit.process_pid; seen = 0; for (n = 0; n < m; n++) if (pids[n] == pid) { if (verbose && !seen) display(pid, status); pids[n] = 0; seen = 1; if (check && rc == 0 && (!WIFEXITED(status) || WEXITSTATUS(status) != 0)) rc = 111; } } if (nlh->nlmsg_type == NLMSG_DONE) break; nlh = NLMSG_NEXT(nlh, recv_len); } quit = 1; for (n = 0; n < m; n++) if (pids[n] != 0) quit = 0; } close_and_exit: close(sk_nl); free(pids); return rc; } 07070100000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000B00000000TRAILER!!!73 blocks
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