| // SPDX-License-Identifier: GPL-2.0-or-later |
| /* |
| * Copyright (c) 2017 Cyril Hrubis <chrubis@suse.cz> |
| */ |
| /* |
| * Basic test for the BLKROSET and BLKROGET ioctls. |
| * |
| * - Set the device read only, read the value back. |
| * - Try to mount the device read write, expect failure. |
| * - Try to mount the device read only, expect success. |
| */ |
| |
| #include <errno.h> |
| #include <sys/mount.h> |
| #include "tst_test.h" |
| |
| static int fd; |
| |
| static void verify_ioctl(void) |
| { |
| int ro = 1; |
| |
| SAFE_IOCTL(fd, BLKROGET, &ro); |
| |
| if (ro == 0) |
| tst_res(TPASS, "BLKROGET returned 0"); |
| else |
| tst_res(TFAIL, "BLKROGET returned %i", ro); |
| |
| ro = 1; |
| SAFE_IOCTL(fd, BLKROSET, &ro); |
| |
| ro = 0; |
| SAFE_IOCTL(fd, BLKROGET, &ro); |
| |
| if (ro == 0) |
| tst_res(TFAIL, "BLKROGET returned 0"); |
| else |
| tst_res(TPASS, "BLKROGET returned %i", ro); |
| |
| TEST(mount(tst_device->dev, "mntpoint", tst_device->fs_type, 0, NULL)); |
| |
| if (TST_RET != -1) { |
| tst_res(TFAIL, "Mounting RO device RW succeeded"); |
| tst_umount("mntpoint"); |
| goto next; |
| } |
| |
| if (TST_ERR == EACCES) { |
| tst_res(TPASS | TERRNO, "Mounting RO device RW failed"); |
| goto next; |
| } |
| |
| tst_res(TFAIL | TERRNO, |
| "Mounting RO device RW failed unexpectedly expected EACCES"); |
| |
| next: |
| TEST(mount(tst_device->dev, "mntpoint", tst_device->fs_type, MS_RDONLY, NULL)); |
| |
| if (TST_RET == 0) { |
| tst_res(TPASS, "Mounting RO device RO works"); |
| tst_umount("mntpoint"); |
| } else { |
| tst_res(TFAIL | TTERRNO, "Mounting RO device RO failed"); |
| } |
| |
| ro = 0; |
| SAFE_IOCTL(fd, BLKROSET, &ro); |
| } |
| |
| static void setup(void) |
| { |
| SAFE_MKDIR("mntpoint", 0777); |
| fd = SAFE_OPEN(tst_device->dev, O_RDONLY); |
| } |
| |
| static void cleanup(void) |
| { |
| if (fd > 0) |
| SAFE_CLOSE(fd); |
| } |
| |
| static struct tst_test test = { |
| .format_device = 1, |
| .needs_root = 1, |
| .setup = setup, |
| .cleanup = cleanup, |
| .test_all = verify_ioctl, |
| }; |