From mboxrd@z Thu Jan 1 00:00:00 1970 From: Christian Amann Date: Wed, 20 Mar 2019 15:00:58 +0100 Subject: [LTP] [PATCH v1] syscalls/ioctl08: add file deduplication testcases Message-ID: <20190320140058.13944-1-camann@suse.com> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: ltp@lists.linux.it This adds tests for the ioctl request FIDEDUPERANGE on a btrfs device. These tests set the contents of two files, and checks if the following enteties are set correctly after the ioctl call: - errno (set by ioctl) - number of deduplicated bytes - status field of the file_dedupe_range_info struct Signed-off-by: Christian Amann --- configure.ac | 1 + runtest/syscalls | 1 + testcases/kernel/syscalls/ioctl/.gitignore | 1 + testcases/kernel/syscalls/ioctl/ioctl08.c | 133 +++++++++++++++++++++++++++++ 4 files changed, 136 insertions(+) create mode 100644 testcases/kernel/syscalls/ioctl/ioctl08.c diff --git a/configure.ac b/configure.ac index e002c248e..3295ee909 100644 --- a/configure.ac +++ b/configure.ac @@ -38,6 +38,7 @@ AC_CHECK_HEADERS([ \ linux/can.h \ linux/dccp.h \ linux/cryptouser.h \ + linux/fs.h \ linux/genetlink.h \ linux/keyctl.h \ linux/if_alg.h \ diff --git a/runtest/syscalls b/runtest/syscalls index b0904086d..790cd56d0 100644 --- a/runtest/syscalls +++ b/runtest/syscalls @@ -499,6 +499,7 @@ ioctl05 ioctl05 ioctl06 ioctl06 ioctl07 ioctl07 +ioctl08 ioctl08 inotify_init1_01 inotify_init1_01 inotify_init1_02 inotify_init1_02 diff --git a/testcases/kernel/syscalls/ioctl/.gitignore b/testcases/kernel/syscalls/ioctl/.gitignore index 79516a17c..4d480a0ed 100644 --- a/testcases/kernel/syscalls/ioctl/.gitignore +++ b/testcases/kernel/syscalls/ioctl/.gitignore @@ -5,3 +5,4 @@ /ioctl05 /ioctl06 /ioctl07 +/ioctl08 diff --git a/testcases/kernel/syscalls/ioctl/ioctl08.c b/testcases/kernel/syscalls/ioctl/ioctl08.c new file mode 100644 index 000000000..4e2507801 --- /dev/null +++ b/testcases/kernel/syscalls/ioctl/ioctl08.c @@ -0,0 +1,133 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Copyright (c) 2019 SUSE LLC + * Author: Christian Amann + * + */ + +/* + * Tests the ioctl functionality to deduplicate fileranges using + * btrfs filesystem. + * + * 1) Sets the same contents for two files and deduplicates it. + * Deduplicates 3 bytes and set the status to + * FILE_DEDUPE_RANGE_SAME. + * 2) Sets different content for two files and tries to + * deduplicate it. 0 bytes get deduplicated and status is + * set to FILE_DEDUPE_RANGE_DIFFERS. + * 3) Sets same content for two files but sets the length to + * deduplicate to -1. ioctl(FIDEDUPERANGE) fails with EINVAL. + */ + +#include +#include "tst_test.h" +#include +#include + +#ifdef HAVE_LINUX_FS_H +#include + +#ifndef SUCCESS +#define SUCCESS 0 +#endif + +#define MNTPOINT "mnt_point" +#define FILE_SRC_PATH MNTPOINT"/file_src" +#define FILE_DEST_PATH MNTPOINT"/file_dest" + +static int fd_src; +static int fd_dest; +static struct file_dedupe_range *fdr; + +static struct tcase { + uint64_t src_length; + char *src_fcontents; + char *dest_fcontents; + int exp_err; + uint64_t bytes_deduped; + int status; +} tcases[] = { + {3, "AAA", "AAA", SUCCESS, 3, FILE_DEDUPE_RANGE_SAME}, + {3, "AAA", "AAB", SUCCESS, 0, FILE_DEDUPE_RANGE_DIFFERS}, + {-1, "AAA", "AAA", EINVAL, 0, 0}, +}; + +static void verify_ioctl(unsigned int n) +{ + struct tcase *tc = &tcases[n]; + + fd_src = SAFE_OPEN(FILE_SRC_PATH, O_RDWR | O_CREAT, 0664); + fd_dest = SAFE_OPEN(FILE_DEST_PATH, O_RDWR | O_CREAT, 0644); + + SAFE_WRITE(1, fd_src, tc->src_fcontents, strlen(tc->src_fcontents)); + SAFE_WRITE(1, fd_dest, tc->dest_fcontents, strlen(tc->dest_fcontents)); + + memset(fdr, 0, sizeof(struct file_dedupe_range) + + sizeof(struct file_dedupe_range_info)); + + fdr->src_length = tc->src_length; + fdr->dest_count = 1; + fdr->info[0].dest_fd = fd_dest; + + TEST(ioctl(fd_src, FIDEDUPERANGE, fdr)); + + if (tc->exp_err != TST_ERR) { + tst_res(TFAIL, + "ioctl(FIDEDUPERANGE) ended with %s, expected %s", + tst_strerrno(TST_ERR), tst_strerrno(tc->exp_err)); + return; + } + + if (fdr->info[0].bytes_deduped != tc->bytes_deduped) { + tst_res(TFAIL, + "ioctl(FIDEDUPERANGE) deduplicated %lld bytes, expected %ld. Status: %d", + fdr->info[0].bytes_deduped, tc->bytes_deduped, + fdr->info[0].status); + return; + } + + if (fdr->info[0].status != tc->status) { + tst_res(TFAIL, + "ioctl(FIDEDUPERANGE) status set to %d, expected %d", + fdr->info[0].status, tc->status); + return; + } + + tst_res(TPASS, "ioctl(FIDEDUPERANGE) ended with %s as expected", + tst_strerrno(tc->exp_err)); + + SAFE_CLOSE(fd_dest); + SAFE_CLOSE(fd_src); +} + +static void cleanup(void) +{ + if (fd_dest > 0) + SAFE_CLOSE(fd_dest); + if (fd_src > 0) + SAFE_CLOSE(fd_src); + if (fdr) + free(fdr); +} + +static void setup(void) +{ + fdr = SAFE_MALLOC(sizeof(struct file_dedupe_range) + + sizeof(struct file_dedupe_range_info)); +} + +static struct tst_test test = { + .test = verify_ioctl, + .tcnt = ARRAY_SIZE(tcases), + .setup = setup, + .cleanup = cleanup, + .min_kver = "4.5", + .needs_root = 1, + .mount_device = 1, + .mntpoint = MNTPOINT, + .dev_fs_type = "btrfs", +}; +#else + TST_TEST_TCONF( + "This system does not provide support for ioctl(FIDEDUPERANGE)"); +#endif -- 2.16.4