1 files changed, 0 insertions, 171 deletions
diff --git a/tools/testing/selftests/exec/binfmt_script b/tools/testing/selftests/exec/binfmt_script
deleted file mode 100755
index 05f94a741c7a..000000000000
--- a/tools/testing/selftests/exec/binfmt_script
+++ /dev/null
@@ -1,171 +0,0 @@
-#!/usr/bin/env python3
-# SPDX-License-Identifier: GPL-2.0
-#
-# Test that truncation of bprm->buf doesn't cause unexpected execs paths, along
-# with various other pathological cases.
-import os, subprocess
-
-# Relevant commits
-#
-# b5372fe5dc84 ("exec: load_script: Do not exec truncated interpreter path")
-# 6eb3c3d0a52d ("exec: increase BINPRM_BUF_SIZE to 256")
-
-# BINPRM_BUF_SIZE
-SIZE=256
-
-NAME_MAX=int(subprocess.check_output(["getconf", "NAME_MAX", "."]))
-
-test_num=0
-
-code='''#!/usr/bin/perl
-print "Executed interpreter! Args:\n";
-print "0 : '$0'\n";
-$counter = 1;
-foreach my $a (@ARGV) {
-    print "$counter : '$a'\n";
-    $counter++;
-}
-'''
-
-##
-# test - produce a binfmt_script hashbang line for testing
-#
-# @size:     bytes for bprm->buf line, including hashbang but not newline
-# @good:     whether this script is expected to execute correctly
-# @hashbang: the special 2 bytes for running binfmt_script
-# @leading:  any leading whitespace before the executable path
-# @root:     start of executable pathname
-# @target:   end of executable pathname
-# @arg:      bytes following the executable pathname
-# @fill:     character to fill between @root and @target to reach @size bytes
-# @newline:  character to use as newline, not counted towards @size
-# ...
-def test(name, size, good=True, leading="", root="./", target="/perl",
-                     fill="A", arg="", newline="\n", hashbang="#!"):
-    global test_num, tests, NAME_MAX
-    test_num += 1
-    if test_num > tests:
-        raise ValueError("more binfmt_script tests than expected! (want %d, expected %d)"
-                         % (test_num, tests))
-
-    middle = ""
-    remaining = size - len(hashbang) - len(leading) - len(root) - len(target) - len(arg)
-    # The middle of the pathname must not exceed NAME_MAX
-    while remaining >= NAME_MAX:
-        middle += fill * (NAME_MAX - 1)
-        middle += '/'
-        remaining -= NAME_MAX
-    middle += fill * remaining
-
-    dirpath = root + middle
-    binary = dirpath + target
-    if len(target):
-        os.makedirs(dirpath, mode=0o755, exist_ok=True)
-        open(binary, "w").write(code)
-        os.chmod(binary, 0o755)
-
-    buf=hashbang + leading + root + middle + target + arg + newline
-    if len(newline) > 0:
-        buf += 'echo this is not really perl\n'
-
-    script = "binfmt_script-%s" % (name)
-    open(script, "w").write(buf)
-    os.chmod(script, 0o755)
-
-    proc = subprocess.Popen(["./%s" % (script)], shell=True,
-                            stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
-    stdout = proc.communicate()[0]
-
-    if proc.returncode == 0 and b'Executed interpreter' in stdout:
-        if good:
-            print("ok %d - binfmt_script %s (successful good exec)"
-                  % (test_num, name))
-        else:
-            print("not ok %d - binfmt_script %s succeeded when it should have failed"
-                  % (test_num, name))
-    else:
-        if good:
-            print("not ok %d - binfmt_script %s failed when it should have succeeded (rc:%d)"
-                  % (test_num, name, proc.returncode))
-        else:
-            print("ok %d - binfmt_script %s (correctly failed bad exec)"
-                  % (test_num, name))
-
-    # Clean up crazy binaries
-    os.unlink(script)
-    if len(target):
-        elements = binary.split('/')
-        os.unlink(binary)
-        elements.pop()
-        while len(elements) > 1:
-            os.rmdir("/".join(elements))
-            elements.pop()
-
-tests=27
-print("TAP version 1.3")
-print("1..%d" % (tests))
-
-### FAIL (8 tests)
-
-# Entire path is well past the BINFMT_BUF_SIZE.
-test(name="too-big",        size=SIZE+80, good=False)
-# Path is right at max size, making it impossible to tell if it was truncated.
-test(name="exact",          size=SIZE,    good=False)
-# Same as above, but with leading whitespace.
-test(name="exact-space",    size=SIZE,    good=False, leading=" ")
-# Huge buffer of only whitespace.
-test(name="whitespace-too-big", size=SIZE+71, good=False, root="",
-                                              fill=" ", target="")
-# A good path, but it gets truncated due to leading whitespace.
-test(name="truncated",      size=SIZE+17, good=False, leading=" " * 19)
-# Entirely empty except for #!
-test(name="empty",          size=2,       good=False, root="",
-                                          fill="", target="", newline="")
-# Within size, but entirely spaces
-test(name="spaces",         size=SIZE-1,  good=False, root="", fill=" ",
-                                          target="", newline="")
-# Newline before binary.
-test(name="newline-prefix", size=SIZE-1,  good=False, leading="\n",
-                                          root="", fill=" ", target="")
-
-### ok (19 tests)
-
-# The original test case that was broken by commit:
-# 8099b047ecc4 ("exec: load_script: don't blindly truncate shebang string")
-test(name="test.pl",        size=439, leading=" ",
-     root="./nix/store/bwav8kz8b3y471wjsybgzw84mrh4js9-perl-5.28.1/bin",
-     arg=" -I/nix/store/x6yyav38jgr924nkna62q3pkp0dgmzlx-perl5.28.1-File-Slurp-9999.25/lib/perl5/site_perl -I/nix/store/ha8v67sl8dac92r9z07vzr4gv1y9nwqz-perl5.28.1-Net-DBus-1.1.0/lib/perl5/site_perl -I/nix/store/dcrkvnjmwh69ljsvpbdjjdnqgwx90a9d-perl5.28.1-XML-Parser-2.44/lib/perl5/site_perl -I/nix/store/rmji88k2zz7h4zg97385bygcydrf2q8h-perl5.28.1-XML-Twig-3.52/lib/perl5/site_perl")
-# One byte under size, leaving newline visible.
-test(name="one-under",           size=SIZE-1)
-# Two bytes under size, leaving newline visible.
-test(name="two-under",           size=SIZE-2)
-# Exact size, but trailing whitespace visible instead of newline
-test(name="exact-trunc-whitespace", size=SIZE, arg=" ")
-# Exact size, but trailing space and first arg char visible instead of newline.
-test(name="exact-trunc-arg",     size=SIZE, arg=" f")
-# One bute under, with confirmed non-truncated arg since newline now visible.
-test(name="one-under-full-arg",  size=SIZE-1, arg=" f")
-# Short read buffer by one byte.
-test(name="one-under-no-nl",     size=SIZE-1, newline="")
-# Short read buffer by half buffer size.
-test(name="half-under-no-nl",    size=int(SIZE/2), newline="")
-# One byte under with whitespace arg. leaving wenline visible.
-test(name="one-under-trunc-arg", size=SIZE-1, arg=" ")
-# One byte under with whitespace leading. leaving wenline visible.
-test(name="one-under-leading",   size=SIZE-1, leading=" ")
-# One byte under with whitespace leading and as arg. leaving newline visible.
-test(name="one-under-leading-trunc-arg",  size=SIZE-1, leading=" ", arg=" ")
-# Same as above, but with 2 bytes under
-test(name="two-under-no-nl",     size=SIZE-2, newline="")
-test(name="two-under-trunc-arg", size=SIZE-2, arg=" ")
-test(name="two-under-leading",   size=SIZE-2, leading=" ")
-test(name="two-under-leading-trunc-arg",   size=SIZE-2, leading=" ", arg=" ")
-# Same as above, but with buffer half filled
-test(name="two-under-no-nl",     size=int(SIZE/2), newline="")
-test(name="two-under-trunc-arg", size=int(SIZE/2), arg=" ")
-test(name="two-under-leading",   size=int(SIZE/2), leading=" ")
-test(name="two-under-lead-trunc-arg", size=int(SIZE/2), leading=" ", arg=" ")
-
-if test_num != tests:
-    raise ValueError("fewer binfmt_script tests than expected! (ran %d, expected %d"
-                     % (test_num, tests))