1 #include <fcntl.h>
2 #include <sys/stat.h>
3
4 #include "./capsicum-test.h"
5
6 // There was a Capsicum-related regression in FreeBSD renameat,
7 // which affects certain cases independent of Capsicum or capability mode
8 //
9 // added to test the renameat syscall for the case that
10 // - the "to" file already exists
11 // - the "to" file is specified by an absolute path
12 // - the "to" file descriptor is used
13 // (this descriptor should be ignored if absolute path is provided)
14 //
15 // details at: https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=222258
16
17
create_tmp_src(const char * filename)18 const char * create_tmp_src(const char* filename) {
19 const char *src_path = TmpFile(filename);
20 int src_fd = open(src_path, O_CREAT|O_RDWR, 0644);
21 close(src_fd);
22 return src_path;
23 }
24
TEST(Rename,AbsDesignationSame)25 TEST(Rename, AbsDesignationSame) {
26 const char *src_path = create_tmp_src("rename_test");
27 EXPECT_OK(rename(src_path, src_path));
28 unlink(src_path);
29 }
30
TEST(RenameAt,AbsDesignationSame)31 TEST(RenameAt, AbsDesignationSame) {
32 const char *src_path = create_tmp_src("renameat_test");
33 const char *dir_path = TmpFile("renameat_test_dir");
34
35 EXPECT_OK(mkdir(dir_path, 0755));
36 // random temporary directory descriptor
37 int dfd = open(dir_path, O_DIRECTORY);
38
39 // Various rename from/to the same absolute path; in each case the source
40 // and dest directory FDs should be irrelevant.
41 EXPECT_OK(renameat(AT_FDCWD, src_path, AT_FDCWD, src_path));
42 EXPECT_OK(renameat(AT_FDCWD, src_path, dfd, src_path));
43 EXPECT_OK(renameat(dfd, src_path, AT_FDCWD, src_path));
44 EXPECT_OK(renameat(dfd, src_path, dfd, src_path));
45
46 close(dfd);
47 rmdir(dir_path);
48 unlink(src_path);
49 }
50