Add basic tests for a floppy with a readonly disk. "rdonly" test works under following assumptions: - there is a readonly disk in "/dev/fd0" - the disk is VFAT formatted - there is "test" file with "TEST" in it on the disk
"run_rdonly.sh" script simulates the conditions and automates the testing process.
The tests cover the regression: - commit f2791e7eadf4 ("Revert "floppy: refactor open() flags handling"")
Signed-off-by: Denis Efremov efremov@linux.com --- tools/testing/selftests/floppy/.gitignore | 2 + tools/testing/selftests/floppy/Makefile | 6 +- tools/testing/selftests/floppy/lib.sh | 6 ++ tools/testing/selftests/floppy/rdonly.c | 99 ++++++++++++++++++++ tools/testing/selftests/floppy/run_rdonly.sh | 22 +++++ 5 files changed, 132 insertions(+), 3 deletions(-) create mode 100644 tools/testing/selftests/floppy/rdonly.c create mode 100755 tools/testing/selftests/floppy/run_rdonly.sh
diff --git a/tools/testing/selftests/floppy/.gitignore b/tools/testing/selftests/floppy/.gitignore index a9fdf1dbaa97..7642dc0ef281 100644 --- a/tools/testing/selftests/floppy/.gitignore +++ b/tools/testing/selftests/floppy/.gitignore @@ -1,5 +1,7 @@ init cpio_list initrd +testdir/
empty +rdonly diff --git a/tools/testing/selftests/floppy/Makefile b/tools/testing/selftests/floppy/Makefile index 83e18cd63210..ed8fdeb79aea 100644 --- a/tools/testing/selftests/floppy/Makefile +++ b/tools/testing/selftests/floppy/Makefile @@ -1,10 +1,10 @@ # SPDX-License-Identifier: GPL-2.0 CFLAGS := -static -I../../../../usr/include
-TEST_PROGS := run_empty.sh -TEST_GEN_FILES := init empty +TEST_PROGS := run_empty.sh run_rdonly.sh +TEST_GEN_FILES := init empty rdonly TEST_FILES := lib.sh
include ../lib.mk
-EXTRA_CLEAN := initrd cpio_list +EXTRA_CLEAN := initrd cpio_list testdir diff --git a/tools/testing/selftests/floppy/lib.sh b/tools/testing/selftests/floppy/lib.sh index 22b711ec32ee..9988be187bc9 100644 --- a/tools/testing/selftests/floppy/lib.sh +++ b/tools/testing/selftests/floppy/lib.sh @@ -55,3 +55,9 @@ run_qemu_empty() { detect_debug "$1" $run -drive index=0,if=floppy } + +run_qemu_rdonly_fat() { + detect_debug "$2" + $run -drive file=fat:floppy:"$1",index=0,if=floppy,readonly +} + diff --git a/tools/testing/selftests/floppy/rdonly.c b/tools/testing/selftests/floppy/rdonly.c new file mode 100644 index 000000000000..fa60d069540b --- /dev/null +++ b/tools/testing/selftests/floppy/rdonly.c @@ -0,0 +1,99 @@ +// SPDX-License-Identifier: GPL-2.0 + +#include <errno.h> +#include <fcntl.h> +#include <unistd.h> +#include <sys/mount.h> +#include <sys/ioctl.h> +#include <linux/fd.h> +#include "../kselftest_harness.h" + +FIXTURE(floppy) { + const char *dev; +}; + +FIXTURE_SETUP(floppy) +{ + int fd; + struct floppy_drive_params params; + + self->dev = "/dev/fd0"; + if (access(self->dev, F_OK)) + ksft_exit_skip("No floppy device found\n"); + if (access(self->dev, R_OK)) + ksft_exit_skip("Floppy is not read accessible\n"); + + fd = open(self->dev, O_ACCMODE|O_NDELAY); + EXPECT_EQ(0, ioctl(fd, FDGETDRVPRM, ¶ms)); + params.flags |= FTD_MSG|FD_DEBUG; + EXPECT_EQ(0, ioctl(fd, FDSETDRVPRM, ¶ms)); + close(fd); +} + +FIXTURE_TEARDOWN(floppy) +{ +} + +TEST_F(floppy, read) +{ + int fd, test; + + fd = open(self->dev, O_RDONLY); + ASSERT_GT(fd, 0); + ASSERT_EQ(read(fd, &test, sizeof(test)), sizeof(test)); + ASSERT_EQ(close(fd), 0); +} + +TEST_F(floppy, open_write_fail) +{ + ASSERT_LT(open(self->dev, O_WRONLY), 0); +} + +TEST_F(floppy, open_rdwr_fail) +{ + ASSERT_LT(open(self->dev, O_RDWR), 0); +} + +TEST_F(floppy, ioctl_disk_writable) +{ + int fd; + struct floppy_drive_struct drive; + + fd = open(self->dev, O_RDONLY|O_NDELAY); + ASSERT_GT(fd, 0); + ASSERT_EQ(0, ioctl(fd, FDGETDRVSTAT, &drive)); + ASSERT_FALSE(drive.flags & FD_DISK_WRITABLE); + ASSERT_EQ(close(fd), 0); +} + +TEST_F(floppy, mount) +{ + int fd; + char test[5] = {}; + + mount(self->dev, "/mnt", "vfat", MS_RDONLY, NULL); + ASSERT_EQ(0, errno); + + fd = open("/mnt/test", O_RDONLY); + read(fd, &test, sizeof(test)); + ASSERT_EQ(0, strncmp(test, "TEST", 4)); +} + +TEST_F(floppy, open_ndelay_write_fail) +{ +#define TEST_DATA "TEST_FAIL_WRITE" + int fd; + char test[] = TEST_DATA; + + fd = open(self->dev, O_RDWR|O_NDELAY); + ASSERT_GT(fd, 0); + + write(fd, test, sizeof(test)); + read(fd, test, sizeof(test)); + ASSERT_NE(0, strncmp(TEST_DATA, test, sizeof(TEST_DATA))); + + ASSERT_EQ(close(fd), 0); +#undef TEST_DATA +} + +TEST_HARNESS_MAIN diff --git a/tools/testing/selftests/floppy/run_rdonly.sh b/tools/testing/selftests/floppy/run_rdonly.sh new file mode 100755 index 000000000000..a358a1b6e58d --- /dev/null +++ b/tools/testing/selftests/floppy/run_rdonly.sh @@ -0,0 +1,22 @@ +#!/bin/sh +# SPDX-License-Identifier: GPL-2.0 + +set -e + +source "$(dirname $0)"/lib.sh + +while getopts d flag; do + case "${flag}" in + d) debug=1;; + esac +done + +if [ -z $debug ]; then + trap "rm -rf testdir" EXIT +fi +mkdir -p testdir +echo -n TEST > testdir/test + +gen_cpio_list rdonly +gen_initrd rdonly +run_qemu_rdonly_fat testdir $debug