# Copyright (C) 2009, 2011-2012 Free Software Foundation, Inc.
#
# Copying and distribution of this file, with or without modification,
# in any medium, are permitted without royalty provided the copyright
# notice and this notice are preserved.

# Patching read-only files

. $srcdir/test-lib.sh

require_cat
use_local_patch
use_tmpdir

# --------------------------------------------------------------

: > read-only
chmod a-w read-only
if : 2> /dev/null > read-only; then
    echo "Files with read-only permissions are writable" \
	 "(probably running as superuser)" >&2
    exit 77
fi
rm -f read-only

# ==============================================================

cat > f.diff <<EOF
--- f.orig
+++ f
@@ -1 +1 @@
-one
+two
--- f.orig
+++ f
@@ -1 +1 @@
-two
+three
EOF

echo one > f
chmod a=r f

check 'patch -p0 --read-only=fail < f.diff || echo "Status: $?"' <<EOF
File f is read-only; refusing to patch
1 out of 1 hunk ignored -- saving rejects to file f.rej
File f is read-only; refusing to patch
1 out of 1 hunk ignored -- saving rejects to file f.rej
Status: 1
EOF

rm -f f.rej

check 'patch -f -p0 --read-only=warn < f.diff || echo "Status: $?"' <<EOF
File f is read-only; trying to patch anyway
patching file f
File f is read-only; trying to patch anyway
patching file f
EOF

rm -f f
echo one > f
chmod a=r f

check 'patch -f -p0 --read-only=ignore < f.diff || echo "Status: $?"' <<EOF
patching file f
patching file f
EOF