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author | Christian Brauner <brauner@kernel.org> | 2024-05-09 14:29:18 +0300 |
---|---|---|
committer | Christian Brauner <brauner@kernel.org> | 2024-05-10 09:49:13 +0300 |
commit | 4810ce7c91993f5d6e7c20fa8da7cb474ee72ca7 (patch) | |
tree | 204f21f8a0ff2c4840a4e8807432ecc457c300fe /tools/testing/selftests | |
parent | c62b758bae6af16fee94f556091fa74883a96b1e (diff) | |
download | linux-4810ce7c91993f5d6e7c20fa8da7cb474ee72ca7.tar.xz |
selftests: add F_DUPDFD_QUERY selftests
Add simple selftests for the new F_DUPFD_QUERY fcntl().
Signed-off-by: Christian Brauner <brauner@kernel.org>
Diffstat (limited to 'tools/testing/selftests')
-rw-r--r-- | tools/testing/selftests/core/close_range_test.c | 55 |
1 files changed, 54 insertions, 1 deletions
diff --git a/tools/testing/selftests/core/close_range_test.c b/tools/testing/selftests/core/close_range_test.c index c59e4adb905d..991c473e3859 100644 --- a/tools/testing/selftests/core/close_range_test.c +++ b/tools/testing/selftests/core/close_range_test.c @@ -17,6 +17,15 @@ #include "../kselftest_harness.h" #include "../clone3/clone3_selftests.h" + +#ifndef F_LINUX_SPECIFIC_BASE +#define F_LINUX_SPECIFIC_BASE 1024 +#endif + +#ifndef F_DUPFD_QUERY +#define F_DUPFD_QUERY (F_LINUX_SPECIFIC_BASE + 3) +#endif + static inline int sys_close_range(unsigned int fd, unsigned int max_fd, unsigned int flags) { @@ -45,6 +54,15 @@ TEST(core_close_range) SKIP(return, "close_range() syscall not supported"); } + for (i = 0; i < 100; i++) { + ret = fcntl(open_fds[i], F_DUPFD_QUERY, open_fds[i + 1]); + if (ret < 0) { + EXPECT_EQ(errno, EINVAL); + } else { + EXPECT_EQ(ret, 0); + } + } + EXPECT_EQ(0, sys_close_range(open_fds[0], open_fds[50], 0)); for (i = 0; i <= 50; i++) @@ -358,7 +376,7 @@ TEST(close_range_cloexec_unshare) */ TEST(close_range_cloexec_syzbot) { - int fd1, fd2, fd3, flags, ret, status; + int fd1, fd2, fd3, fd4, flags, ret, status; pid_t pid; struct __clone_args args = { .flags = CLONE_FILES, @@ -372,6 +390,13 @@ TEST(close_range_cloexec_syzbot) fd2 = dup2(fd1, 1000); EXPECT_GT(fd2, 0); + flags = fcntl(fd1, F_DUPFD_QUERY, fd2); + if (flags < 0) { + EXPECT_EQ(errno, EINVAL); + } else { + EXPECT_EQ(flags, 1); + } + pid = sys_clone3(&args, sizeof(args)); ASSERT_GE(pid, 0); @@ -396,6 +421,15 @@ TEST(close_range_cloexec_syzbot) fd3 = dup2(fd1, 42); EXPECT_GT(fd3, 0); + flags = fcntl(fd1, F_DUPFD_QUERY, fd3); + if (flags < 0) { + EXPECT_EQ(errno, EINVAL); + } else { + EXPECT_EQ(flags, 1); + } + + + /* * Duplicating the file descriptor must remove the * FD_CLOEXEC flag. @@ -426,6 +460,24 @@ TEST(close_range_cloexec_syzbot) fd3 = dup2(fd1, 42); EXPECT_GT(fd3, 0); + flags = fcntl(fd1, F_DUPFD_QUERY, fd3); + if (flags < 0) { + EXPECT_EQ(errno, EINVAL); + } else { + EXPECT_EQ(flags, 1); + } + + fd4 = open("/dev/null", O_RDWR); + EXPECT_GT(fd4, 0); + + /* Same inode, different file pointers. */ + flags = fcntl(fd1, F_DUPFD_QUERY, fd4); + if (flags < 0) { + EXPECT_EQ(errno, EINVAL); + } else { + EXPECT_EQ(flags, 0); + } + flags = fcntl(fd3, F_GETFD); EXPECT_GT(flags, -1); EXPECT_EQ(flags & FD_CLOEXEC, 0); @@ -433,6 +485,7 @@ TEST(close_range_cloexec_syzbot) EXPECT_EQ(close(fd1), 0); EXPECT_EQ(close(fd2), 0); EXPECT_EQ(close(fd3), 0); + EXPECT_EQ(close(fd4), 0); } /* |