Add an '-a' option which is identical to specifying '-RpP' for

compatibility with other implementations.

MFC after:	1 month

3 files changed, 15 insertions, 5 deletions

diff --git a/bin/cp/cp.1 b/bin/cp/cp.1
index 96d8f61..7329b64 100644
--- a/bin/cp/cp.1
+++ b/bin/cp/cp.1
@@ -45,7 +45,7 @@
 .Op Fl H | Fl L | Fl P
 .Oc
 .Op Fl f | i | n
-.Op Fl lpv
+.Op Fl alpv
 .Ar source_file target_file
 .Nm
 .Oo
@@ -53,7 +53,7 @@
 .Op Fl H | Fl L | Fl P
 .Oc
 .Op Fl f | i | n
-.Op Fl lpv
+.Op Fl alpv
 .Ar source_file ... target_directory
 .Sh DESCRIPTION
 In the first synopsis form, the
@@ -116,6 +116,10 @@ If you need to preserve hard links, consider using
 or
 .Xr pax 1
 instead.
+.It Fl a
+Archive mode.
+Same as
+.Fl RpP .
 .It Fl f
 For each existing destination pathname, remove it and
 create a new file, without prompting for confirmation
diff --git a/bin/cp/cp.c b/bin/cp/cp.c
index 823d93e..feba50f 100644
--- a/bin/cp/cp.c
+++ b/bin/cp/cp.c
@@ -102,7 +102,7 @@ main(int argc, char *argv[])
 	char *target;
 
 	Hflag = Lflag = Pflag = 0;
-	while ((ch = getopt(argc, argv, "HLPRfilnprv")) != -1)
+	while ((ch = getopt(argc, argv, "HLPRafilnprv")) != -1)
 		switch (ch) {
 		case 'H':
 			Hflag = 1;
@@ -119,6 +119,12 @@ main(int argc, char *argv[])
 		case 'R':
 			Rflag = 1;
 			break;
+		case 'a':
+			Pflag = 1;
+			pflag = 1;
+			Rflag = 1;
+			Hflag = Lflag = 0;
+			break;
 		case 'f':
 			fflag = 1;
 			iflag = nflag = 0;
diff --git a/bin/cp/utils.c b/bin/cp/utils.c
index 7eea8fa..a128188 100644
--- a/bin/cp/utils.c
+++ b/bin/cp/utils.c
@@ -429,8 +429,8 @@ usage(void)
 {
 
 	(void)fprintf(stderr, "%s\n%s\n",
-"usage: cp [-R [-H | -L | -P]] [-f | -i | -n] [-lpv] source_file target_file",
-"       cp [-R [-H | -L | -P]] [-f | -i | -n] [-lpv] source_file ... "
+"usage: cp [-R [-H | -L | -P]] [-f | -i | -n] [-alpv] source_file target_file",
+"       cp [-R [-H | -L | -P]] [-f | -i | -n] [-alpv] source_file ... "
 "target_directory");
 	exit(EX_USAGE);
 }