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GET /api/1.1/patches/2230825/?format=api
{ "id": 2230825, "url": "http://patchwork.ozlabs.org/api/1.1/patches/2230825/?format=api", "web_url": "http://patchwork.ozlabs.org/project/ltp/patch/20260430051915.2178-1-wegao@suse.com/", "project": { "id": 59, "url": "http://patchwork.ozlabs.org/api/1.1/projects/59/?format=api", "name": "Linux Test Project development", "link_name": "ltp", "list_id": "ltp.lists.linux.it", "list_email": "ltp@lists.linux.it", "web_url": "", "scm_url": "", "webscm_url": "" }, "msgid": "<20260430051915.2178-1-wegao@suse.com>", "date": "2026-04-30T05:19:07", "name": "[v6] fsconfig04: Check FSCONFIG_SET_PATH", "commit_ref": null, "pull_url": null, "state": "needs-review-ack", "archived": false, "hash": "80eb9ff7622e7d246661686e5b8481d7994bedae", "submitter": { "id": 85577, "url": "http://patchwork.ozlabs.org/api/1.1/people/85577/?format=api", "name": "Wei Gao", "email": "wegao@suse.com" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/ltp/patch/20260430051915.2178-1-wegao@suse.com/mbox/", "series": [ { "id": 502199, "url": "http://patchwork.ozlabs.org/api/1.1/series/502199/?format=api", "web_url": "http://patchwork.ozlabs.org/project/ltp/list/?series=502199", "date": "2026-04-30T05:19:07", "name": "[v6] fsconfig04: Check FSCONFIG_SET_PATH", "version": 6, "mbox": "http://patchwork.ozlabs.org/series/502199/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2230825/comments/", "check": "warning", "checks": "http://patchwork.ozlabs.org/api/patches/2230825/checks/", "tags": {}, "headers": { "Return-Path": "<ltp-bounces+incoming=patchwork.ozlabs.org@lists.linux.it>", "X-Original-To": [ "incoming@patchwork.ozlabs.org", "ltp@lists.linux.it" ], "Delivered-To": [ "patchwork-incoming@legolas.ozlabs.org", "ltp@picard.linux.it" ], "Authentication-Results": [ "legolas.ozlabs.org;\n\tdkim=pass (1024-bit key;\n unprotected) header.d=lists.linux.it header.i=@lists.linux.it\n header.a=rsa-sha256 header.s=picard header.b=T0W9MNXi;\n\tdkim=fail reason=\"signature verification failed\" (2048-bit key;\n unprotected) header.d=suse.com header.i=@suse.com header.a=rsa-sha256\n header.s=google header.b=XjjFHO1R;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=lists.linux.it\n (client-ip=2001:1418:10:5::2; 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charset=\"us-ascii\"", "Content-Transfer-Encoding": "7bit", "Errors-To": "ltp-bounces+incoming=patchwork.ozlabs.org@lists.linux.it", "Sender": "\"ltp\" <ltp-bounces+incoming=patchwork.ozlabs.org@lists.linux.it>" }, "content": "The fsconfig01.c does not test if FSCONFIG_SET_PATH have any effect,\nmost of the calls there just set dummy \"sync\" parameter. This test\ncase aims to verify if the FSCONFIG_SET_PATH operation can be used\nto dynamically change the external journal device of ext3 or ext4\nfilesystem.\n\nFixes: https://github.com/linux-test-project/ltp/issues/1169\nSigned-off-by: Wei Gao <wegao@suse.com>\n---\nv5->v6:\n- use `tst_find_free_loopdev()` + `tst_attach_device()` from\n`tst_device.h` instead of pulling in a legacy header.\n\n runtest/syscalls | 1 +\n testcases/kernel/syscalls/fsconfig/.gitignore | 1 +\n .../kernel/syscalls/fsconfig/fsconfig04.c | 172 ++++++++++++++++++\n 3 files changed, 174 insertions(+)\n create mode 100644 testcases/kernel/syscalls/fsconfig/fsconfig04.c", "diff": "diff --git a/runtest/syscalls b/runtest/syscalls\nindex 5025b259f..84adf4fad 100644\n--- a/runtest/syscalls\n+++ b/runtest/syscalls\n@@ -422,6 +422,7 @@ fremovexattr02 fremovexattr02\n fsconfig01 fsconfig01\n fsconfig02 fsconfig02\n fsconfig03 fsconfig03\n+fsconfig04 fsconfig04\n \n fsmount01 fsmount01\n fsmount02 fsmount02\ndiff --git a/testcases/kernel/syscalls/fsconfig/.gitignore b/testcases/kernel/syscalls/fsconfig/.gitignore\nindex cfedae5f7..bd3754c34 100644\n--- a/testcases/kernel/syscalls/fsconfig/.gitignore\n+++ b/testcases/kernel/syscalls/fsconfig/.gitignore\n@@ -1,3 +1,4 @@\n /fsconfig01\n /fsconfig02\n /fsconfig03\n+/fsconfig04\ndiff --git a/testcases/kernel/syscalls/fsconfig/fsconfig04.c b/testcases/kernel/syscalls/fsconfig/fsconfig04.c\nnew file mode 100644\nindex 000000000..f00ce88e4\n--- /dev/null\n+++ b/testcases/kernel/syscalls/fsconfig/fsconfig04.c\n@@ -0,0 +1,172 @@\n+// SPDX-License-Identifier: GPL-2.0-or-later\n+/*\n+ * Copyright (c) 2026 Wei Gao <wegao@suse.com>\n+ */\n+\n+/*\\\n+ * This test aims to validate the functionality of fsconfig(FSCONFIG_SET_PATH) in\n+ * dynamically altering the external journal device of a ext3 or ext4 filesystem.\n+ * Case acquires three loop devices (dev0, dev1, dev2), it formats dev1 and dev2\n+ * as external journal devices using the -O journal_dev option and assigns them\n+ * the same UUID. Then formats dev0 (the main filesystem) multiple times, first\n+ * associating it with dev1, then change to dev2, finally back to dev1 again as\n+ * an external journal using the -J device= option.\n+ *\n+ * 2 Implementation notes in this case need mention:\n+ *\n+ * - To avoid \"journal UUID does not match\" error when switch external journal device\n+ * we have to assign same UUID to dev1/dev2\n+ * - Before fsconfig test we have to format dev0 associating to dev1->dev2->dev1,\n+ * this will make sure both dev1/2's super block contain correct content. Otherwise\n+ * you will encounter error such as \"EXT4-fs (loop0): External journal has more than\n+ * one user (unsupported) - 0\" when switch external journal device using fsconfig.\n+ */\n+\n+#include \"tst_test.h\"\n+#include \"tst_safe_stdio.h\"\n+#include \"lapi/fsmount.h\"\n+\n+#define MNTPOINT\t\"mntpoint\"\n+#define LOOP_DEV_SIZE 10\n+#define UUID \"d73c9e5e-97e4-4a9c-b17e-75a931b02660\"\n+\n+static int fd = -1;\n+static char dev0[PATH_MAX];\n+static char dev1[PATH_MAX];\n+static char dev2[PATH_MAX];\n+\n+static void cleanup(void)\n+{\n+\tif (fd != -1)\n+\t\tSAFE_CLOSE(fd);\n+\n+\tif (dev1[0])\n+\t\ttst_detach_device(dev1);\n+\n+\tif (dev2[0])\n+\t\ttst_detach_device(dev2);\n+}\n+\n+static void setup(void)\n+{\n+\tstrcpy(dev0, tst_device->dev);\n+\n+\tif (tst_prealloc_file(\"dev1_file\", 1024 * 1024, LOOP_DEV_SIZE))\n+\t\ttst_brk(TBROK, \"Failed to create dev1_file\");\n+\n+\tif (tst_find_free_loopdev(dev1, sizeof(dev1)) == -1)\n+\t\ttst_brk(TBROK, \"No free loop device found for dev1\");\n+\n+\tif (tst_attach_device(dev1, \"dev1_file\"))\n+\t\ttst_brk(TBROK, \"Failed to attach dev1_file to %s\", dev1);\n+\n+\tif (tst_prealloc_file(\"dev2_file\", 1024 * 1024, LOOP_DEV_SIZE))\n+\t\ttst_brk(TBROK, \"Failed to create dev2_file\");\n+\n+\tif (tst_find_free_loopdev(dev2, sizeof(dev2)) == -1)\n+\t\ttst_brk(TBROK, \"No free loop device found for dev2\");\n+\n+\tif (tst_attach_device(dev2, \"dev2_file\"))\n+\t\ttst_brk(TBROK, \"Failed to attach dev2_file to %s\", dev2);\n+\n+\tconst char *const *mkfs_opts_set_UUID;\n+\tconst char *const *mkfs_opts_set_journal_dev1;\n+\tconst char *const *mkfs_opts_set_journal_dev2;\n+\n+\tmkfs_opts_set_UUID = (const char *const []) {\"-F\", \"-U\", UUID,\n+\t\t\"-O\", \"journal_dev\", NULL};\n+\n+\tchar device_option_dev1[PATH_MAX];\n+\tchar device_option_dev2[PATH_MAX];\n+\n+\tsnprintf(device_option_dev1, sizeof(device_option_dev1), \"device=%s\", dev1);\n+\tsnprintf(device_option_dev2, sizeof(device_option_dev2), \"device=%s\", dev2);\n+\n+\tmkfs_opts_set_journal_dev1 = (const char *const []) {\"-F\", \"-J\",\n+\t\tdevice_option_dev1, NULL};\n+\n+\tmkfs_opts_set_journal_dev2 = (const char *const []) {\"-F\", \"-J\",\n+\t\tdevice_option_dev2, NULL};\n+\n+\tSAFE_MKFS(dev1, tst_device->fs_type, mkfs_opts_set_UUID, NULL);\n+\tSAFE_MKFS(dev2, tst_device->fs_type, mkfs_opts_set_UUID, NULL);\n+\tSAFE_MKFS(dev0, tst_device->fs_type, mkfs_opts_set_journal_dev1, NULL);\n+\tSAFE_MKFS(dev0, tst_device->fs_type, mkfs_opts_set_journal_dev2, NULL);\n+\tSAFE_MKFS(dev0, tst_device->fs_type, mkfs_opts_set_journal_dev1, NULL);\n+}\n+\n+static void run(void)\n+{\n+\tTEST(fd = fsopen(tst_device->fs_type, 0));\n+\tif (fd == -1)\n+\t\ttst_brk(TBROK | TTERRNO, \"fsopen() failed\");\n+\n+\tTEST(fsconfig(fd, FSCONFIG_SET_STRING, \"source\", dev0, 0));\n+\tif (TST_RET == -1)\n+\t\ttst_brk(TFAIL | TTERRNO, \"fsconfig(FSCONFIG_SET_STRING) failed\");\n+\n+\tTEST(fsconfig(fd, FSCONFIG_SET_PATH, \"journal_path\", dev2, 0));\n+\tif (TST_RET == -1) {\n+\t\tif (TST_ERR == EOPNOTSUPP)\n+\t\t\ttst_brk(TCONF, \"fsconfig(FSCONFIG_SET_PATH) not supported\");\n+\t\telse\n+\t\t\ttst_brk(TFAIL | TTERRNO, \"fsconfig(FSCONFIG_SET_PATH) failed\");\n+\t}\n+\n+\tTEST(fsconfig(fd, FSCONFIG_CMD_CREATE, NULL, NULL, 0));\n+\tif (TST_RET == -1)\n+\t\ttst_brk(TFAIL | TTERRNO, \"fsconfig(FSCONFIG_CMD_CREATE) failed\");\n+\n+\tchar loop_name[NAME_MAX];\n+\tchar path[PATH_MAX];\n+\tchar device_str[NAME_MAX];\n+\tunsigned int major, minor, device_num;\n+\tunsigned int found = 0;\n+\n+\tSAFE_SSCANF(dev2, \"/dev/%s\", loop_name);\n+\n+\tsnprintf(path, sizeof(path), \"/sys/block/%s/dev\", loop_name);\n+\tSAFE_FILE_SCANF(path, \"%u:%u\", &major, &minor);\n+\tdevice_num = (major << 8) | minor;\n+\tsnprintf(device_str, sizeof(device_str), \"0x%04x\", device_num);\n+\n+\tchar line[PATH_MAX];\n+\tFILE *tune2fs;\n+\n+\tsnprintf(path, sizeof(path), \"tune2fs -l %s 2>&1\", dev0);\n+\ttune2fs = SAFE_POPEN(path, \"r\");\n+\n+\twhile (fgets(line, PATH_MAX, tune2fs)) {\n+\t\tif (*line && strstr(line, \"Journal device:\") && strstr(line, device_str)) {\n+\t\t\tfound = 1;\n+\t\t\tbreak;\n+\t\t}\n+\t}\n+\n+\tif (found == 1)\n+\t\ttst_res(TPASS, \"Device found in journal\");\n+\telse\n+\t\ttst_res(TFAIL, \"Device not found in journal\");\n+\n+\tpclose(tune2fs);\n+\tSAFE_CLOSE(fd);\n+}\n+\n+static struct tst_test test = {\n+\t.test_all = run,\n+\t.setup = setup,\n+\t.cleanup = cleanup,\n+\t.needs_root = 1,\n+\t.needs_tmpdir = 1,\n+\t.format_device = 1,\n+\t.mntpoint = MNTPOINT,\n+\t.needs_cmds = (struct tst_cmd []) {\n+\t\t{.cmd = \"tune2fs\"},\n+\t\t{}\n+\t},\n+\t.filesystems = (struct tst_fs []) {\n+\t\t{.type = \"ext3\"},\n+\t\t{.type = \"ext4\"},\n+\t\t{}\n+\t},\n+};\n", "prefixes": [ "v6" ] }