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diff --git a/bin/cp/cp.1 b/bin/cp/cp.1
--- a/bin/cp/cp.1
+++ b/bin/cp/cp.1
@@ -184,6 +184,18 @@
and either the user ID or group ID cannot be preserved, neither
the set-user-ID nor set-group-ID bits are preserved in the copy's
permissions.
+.It Fl -sort
+Visit and traverse sources in (non-localized) lexicographical order.
+Normally,
+.Nm
+visits the sources in the order they were listed on the command line,
+and if recursing, traverses their contents in whichever order they
+were returned in by the kernel, which may be the order in which they
+were created, lexicographical order, or something else entirely.
+With
+.Fl -sort ,
+the sources are both visited and traversed in lexicographical order.
+This is mostly useful for testing.
.It Fl s , Fl -symbolic-link
Create symbolic links to regular files in a hierarchy instead of copying.
.It Fl v , Fl -verbose
diff --git a/bin/cp/cp.c b/bin/cp/cp.c
--- a/bin/cp/cp.c
+++ b/bin/cp/cp.c
@@ -71,7 +71,7 @@
#define END(buf) (buf + sizeof(buf))
PATH_T to = { .dir = -1, .end = to.path };
bool Nflag, fflag, iflag, lflag, nflag, pflag, sflag, vflag;
-static bool Hflag, Lflag, Pflag, Rflag, rflag;
+static bool Hflag, Lflag, Pflag, Rflag, rflag, Sflag;
volatile sig_atomic_t info;
enum op { FILE_TO_FILE, FILE_TO_DIR, DIR_TO_DNE };
@@ -96,6 +96,7 @@
{ "symbolic-link", no_argument, NULL, 's' },
{ "verbose", no_argument, NULL, 'v' },
{ "one-file-system", no_argument, NULL, 'x' },
+ { "sort", no_argument, NULL, SORT_OPT },
{ 0 }
};
@@ -167,6 +168,9 @@
case 'x':
fts_options |= FTS_XDEV;
break;
+ case SORT_OPT:
+ Sflag = true;
+ break;
default:
usage();
}
@@ -284,6 +288,12 @@
&to_stat)));
}
+static int
+ftscmp(const FTSENT * const *a, const FTSENT * const *b)
+{
+ return (strcmp((*a)->fts_name, (*b)->fts_name));
+}
+
static int
copy(char *argv[], enum op type, int fts_options, struct stat *root_stat)
{
@@ -327,7 +337,7 @@
}
level = FTS_ROOTLEVEL;
- if ((ftsp = fts_open(argv, fts_options, NULL)) == NULL)
+ if ((ftsp = fts_open(argv, fts_options, Sflag ? ftscmp : NULL)) == NULL)
err(1, "fts_open");
for (badcp = rval = 0;
(curr = fts_read(ftsp)) != NULL;
diff --git a/bin/cp/tests/cp_test.sh b/bin/cp/tests/cp_test.sh
--- a/bin/cp/tests/cp_test.sh
+++ b/bin/cp/tests/cp_test.sh
@@ -657,7 +657,7 @@
atf_check \
-s exit:1 \
-e match:"^cp: src/b: Permission denied" \
- cp -R src dst
+ cp -R --sort src dst
atf_check test -d dst/a
atf_check cmp src/a/f dst/a/f
atf_check test -d dst/b
@@ -681,7 +681,7 @@
atf_check \
-s exit:1 \
-e match:"^cp: src/b: Permission denied" \
- cp -R src dst
+ cp -R --sort src dst
atf_check test -d dst
atf_check cmp src/a dst/a
atf_check test ! -e dst/b

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