From 52afb3a8d31871d28b1c39573a7ed5196c2d5023 Mon Sep 17 00:00:00 2001
From: Craig Small <csmall@dropbear.xyz>
Date: Mon, 15 Feb 2021 21:10:06 +1100
Subject: [PATCH] pidwait: Rename from pwait

pwait is already in at least Debian in a different package

References:
 https://bugs.debian.org/982391
---
diff --git a/Makefile.am b/Makefile.am
index e037e4c..de15e13 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -49,8 +49,8 @@ bin_PROGRAMS = \
 	uptime \
 	vmstat \
 	w
-if BUILD_PWAIT
-bin_PROGRAMS += pwait
+if BUILD_PIDWAIT
+bin_PROGRAMS += pidwait
 endif
 else
 usrbin_exec_PROGRAMS += \
@@ -85,8 +85,8 @@ dist_man_MANS += \
 	sysctl.conf.5 \
 	ps/ps.1
 
-if BUILD_PWAIT
-dist_man_MANS += pwait.1
+if BUILD_PIDWAIT
+dist_man_MANS += pidwait.1
 endif
 endif
 
@@ -199,8 +199,8 @@ free_SOURCES = free.c lib/strutils.c lib/fileutils.c
 pgrep_SOURCES = pgrep.c lib/fileutils.c lib/nsutils.c
 pkill_SOURCES = pgrep.c lib/fileutils.c lib/nsutils.c
 pmap_SOURCES = pmap.c lib/fileutils.c
-if BUILD_PWAIT
-pwait_SOURCES = pgrep.c lib/fileutils.c lib/nsutils.c
+if BUILD_PIDWAIT
+pidwait_SOURCES = pgrep.c lib/fileutils.c lib/nsutils.c
 endif
 if !CYGWIN
 pwdx_SOURCES = pwdx.c lib/fileutils.c
diff --git a/NEWS b/NEWS
index da63c9c..5fe6761 100644
--- a/NEWS
+++ b/NEWS
@@ -1,3 +1,7 @@
+procps-ng-NEXT
+---------------
+  * Rename pwait to pidwait
+
 procps-ng-3.3.17
 ---------------
   * library: Incremented to 8:3:0
diff --git a/configure.ac b/configure.ac
index 56a8669..750c0fb 100644
--- a/configure.ac
+++ b/configure.ac
@@ -132,20 +132,20 @@ AC_TRY_COMPILE([#include <errno.h>],
 		AC_MSG_RESULT(yes),
 		AC_MSG_RESULT(no))
 
-AC_CHECK_FUNC([pidfd_open], [enable_pwait=yes], [
+AC_CHECK_FUNC([pidfd_open], [enable_pidwait=yes], [
   AC_MSG_CHECKING([for __NR_pidfd_open])
   AC_COMPILE_IFELSE([AC_LANG_SOURCE([
 #include <sys/syscall.h>
 #ifndef __NR_pidfd_open
 #error __NR_pidfd_open not defined
 #endif
-    ])], [enable_pwait=yes], [enable_pwait=no])
-  AC_MSG_RESULT([$enable_pwait])
+    ])], [enable_pidwait=yes], [enable_pidwait=no])
+  AC_MSG_RESULT([$enable_pidwait])
 ])
-if test "$enable_pwait" = yes; then
-  AC_DEFINE([ENABLE_PWAIT], [1], [Enable pwait])
+if test "$enable_pidwait" = yes; then
+  AC_DEFINE([ENABLE_PIDWAIT], [1], [Enable pidwait])
 fi
-AM_CONDITIONAL([BUILD_PWAIT], [test x$enable_pwait = xyes])
+AM_CONDITIONAL([BUILD_PIDWAIT], [test x$enable_pidwait = xyes])
 
 dnl watch8bit must be before the AC_ARG_WITH set as it sets up ncurses
 AC_SUBST([WITH_WATCH8BIT])
diff --git a/pgrep.1 b/pgrep.1
index 4f8907b..af6dcd5 100644
--- a/pgrep.1
+++ b/pgrep.1
@@ -9,7 +9,7 @@
 .\"
 .TH PGREP "1" "2020-06-04" "procps-ng" "User Commands"
 .SH NAME
-pgrep, pkill, pwait \- look up, signal, or wait for processes based on name and other attributes
+pgrep, pkill, pidwait \- look up, signal, or wait for processes based on name and other attributes
 .SH SYNOPSIS
 .B pgrep
 [options] pattern
@@ -17,7 +17,7 @@ pgrep, pkill, pwait \- look up, signal, or wait for processes based on name and
 .B pkill
 [options] pattern
 .br
-.B pwait
+.B pidwait
 [options] pattern
 .SH DESCRIPTION
 .B pgrep
@@ -45,7 +45,7 @@ will send the specified signal (by default
 .BR SIGTERM )
 to each process instead of listing them on stdout.
 .PP
-.B pwait
+.B pidwait
 will wait for each process instead of listing them on stdout.
 .SH OPTIONS
 .TP
@@ -60,7 +60,7 @@ only.)
 \fB\-c\fR, \fB\-\-count\fR
 Suppress normal output; instead print a count of matching processes.  When
 count does not match anything, e.g. returns zero, the command will return
-non-zero value. Note that for pkill and pwait, the count is the number of
+non-zero value. Note that for pkill and pidwait, the count is the number of
 matching processes, not the processes that were successfully signaled or waited
 for.
 .TP
@@ -88,7 +88,7 @@ translated into
 .BR pgrep 's,
 .BR pkill 's,
 or
-.BR pwait 's
+.BR pidwait 's
 own process group.
 .TP
 \fB\-G\fR, \fB\-\-group\fR \fIgid\fP,...
@@ -126,7 +126,7 @@ is translated into
 .BR pgrep 's,
 .BR pkill 's,
 or
-.BR pwait 's
+.BR pidwait 's
 own session ID.
 .TP
 \fB\-t\fR, \fB\-\-terminal\fR \fIterm\fP,...
@@ -145,7 +145,7 @@ symbolical value may be used.
 Negates the matching.  This option is usually used in
 .BR pgrep 's
 or
-.BR pwait 's
+.BR pidwait 's
 context.  In
 .BR pkill 's
 context the short option is disabled to avoid accidental usage of the option.
@@ -154,7 +154,7 @@ context the short option is disabled to avoid accidental usage of the option.
 Shows all thread ids instead of pids in
 .BR pgrep 's
 or
-.BR pwait 's
+.BR pidwait 's
 context.  In
 .BR pkill 's
 context this option is disabled.
@@ -167,7 +167,7 @@ match the
 .TP
 \fB\-F\fR, \fB\-\-pidfile\fR \fIfile\fR
 Read \fIPID\fRs from \fIfile\fR.  This option is more useful for
-.BR pkill or pwait
+.BR pkill or pidwait
 than
 .BR pgrep .
 .TP
@@ -237,7 +237,7 @@ $ renice +4 $(pgrep chrome)
 .PD 0
 .TP
 0
-One or more processes matched the criteria. For pkill and pwait, one or more
+One or more processes matched the criteria. For pkill and pidwait, one or more
 processes must also have been successfully signalled or waited for.
 .TP
 1
@@ -258,7 +258,7 @@ The running
 .BR pgrep ,
 .BR pkill ,
 or
-.B pwait
+.B pidwait
 process will never report itself as a
 match.
 .SH BUGS
diff --git a/pgrep.c b/pgrep.c
index 4fe5e8a..1905cd1 100644
--- a/pgrep.c
+++ b/pgrep.c
@@ -38,7 +38,7 @@
 #include <stdbool.h>
 #include <time.h>
 
-#if defined(ENABLE_PWAIT) && !defined(HAVE_PIDFD_OPEN)
+#if defined(ENABLE_PIDWAIT) && !defined(HAVE_PIDFD_OPEN)
 #include <sys/epoll.h>
 #include <sys/syscall.h>
 #endif
@@ -68,8 +68,8 @@
 static enum {
     PGREP = 0,
     PKILL,
-#ifdef ENABLE_PWAIT
-    PWAIT,
+#ifdef ENABLE_PIDWAIT
+    PIDWAIT,
 #endif
 } prog_mode;
 
@@ -136,8 +136,8 @@ static int __attribute__ ((__noreturn__)) usage(int opt)
 		fputs(_(" -q, --queue <value>       integer value to be sent with the signal\n"), fp);
 		fputs(_(" -e, --echo                display what is killed\n"), fp);
 		break;
-#ifdef ENABLE_PWAIT
-	case PWAIT:
+#ifdef ENABLE_PIDWAIT
+	case PIDWAIT:
 		fputs(_(" -e, --echo                display PIDs before waiting\n"), fp);
 		break;
 #endif
@@ -687,7 +687,7 @@ static struct el * select_procs (int *num)
 				xerrx(EXIT_FAILURE, _("internal error"));
 			}
 
-			// pkill and pwait don't support -w, but this is checked in getopt
+			// pkill and pidwait don't support -w, but this is checked in getopt
 			if (opt_threads) {
 				while (readtask(ptp, &task, &subtask)){
 					// don't add redundant tasks
@@ -742,7 +742,7 @@ static int signal_option(int *argc, char **argv)
 	return -1;
 }
 
-#if defined(ENABLE_PWAIT) && !defined(HAVE_PIDFD_OPEN)
+#if defined(ENABLE_PIDWAIT) && !defined(HAVE_PIDFD_OPEN)
 static int pidfd_open (pid_t pid, unsigned int flags)
 {
 	return syscall(__NR_pidfd_open, pid, flags);
@@ -793,9 +793,9 @@ static void parse_opts (int argc, char **argv)
 		{NULL, 0, NULL, 0}
 	};
 
-#ifdef ENABLE_PWAIT
-	if (strcmp (program_invocation_short_name, "pwait") == 0) {
-		prog_mode = PWAIT;
+#ifdef ENABLE_PIDWAIT
+	if (strcmp (program_invocation_short_name, "pidwait") == 0) {
+		prog_mode = PIDWAIT;
 		strcat (opts, "e");
 	} else
 #endif
@@ -1008,7 +1008,7 @@ int main (int argc, char **argv)
 	int num;
 	int i;
 	int kill_count = 0;
-#ifdef ENABLE_PWAIT
+#ifdef ENABLE_PIDWAIT
 	int poll_count = 0;
 	int wait_count = 0;
 	int epollfd = epoll_create(1);
@@ -1055,8 +1055,8 @@ int main (int argc, char **argv)
 			fprintf(stdout, "%d\n", num);
 		return !kill_count;
 
-#ifdef ENABLE_PWAIT
-	case PWAIT:
+#ifdef ENABLE_PIDWAIT
+	case PIDWAIT:
 		if (opt_count)
 			fprintf(stdout, "%d\n", num);
 
diff --git a/pwait.1 b/pidwait.1
similarity index 100%
rename from pwait.1
rename to pidwait.1
-- 
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