Attachment 16648 Details for Bug 14731 – Patch for 4.13 backported from master

[patch] Patch for 4.13 backported from master

v413-bug14731.patch (text/plain), 8.60 KB, created by Ralph Böhme on 2021-06-10 12:43:09 UTC

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Creator: Ralph Böhme

Created: 2021-06-10 12:43:09 UTC

Size: 8.60 KB

patch

obsolete

>From 3e06dddc1cbc680602eae056491377c32fce74cf Mon Sep 17 00:00:00 2001
>From: Ralph Boehme <slow@samba.org>
>Date: Mon, 7 Jun 2021 19:03:05 +0200
>Subject: [PATCH 1/3] smbtorture: verify attributes on fake quota file handle
>
>The expected DOS attributes are taken from a Windows 2016 server. The expected
>timestamps are what Samba has returned before commit 572d4e3a56eef00e29f9348:
>NTTIME(0), ie no value.
>
>The upcoming fix will restore this behaviour. Windows of course does
>return *some* timestamps, but as it's neither documented nor was I able to
>figure out where they would be coming from, as well as the Windows client apparently
>doesn't care, I didn't bother with implementing some sophisticated heuristic to
>return some timestamps.
>
>BUG: https://bugzilla.samba.org/show_bug.cgi?id=14731
>
>Signed-off-by: Ralph Boehme <slow@samba.org>
>Reviewed-by: Jeremy Allison <jra@samba.org>
>(cherry picked from commit 1e338d51602a7dca6108e5e8704f5cdde4740713)
>---
> selftest/knownfail                      |  1 +
> selftest/knownfail.d/samba3.smb2.create |  2 +
> source4/torture/smb2/create.c           | 63 +++++++++++++++++++++++++
> 3 files changed, 66 insertions(+)
> create mode 100644 selftest/knownfail.d/samba3.smb2.create
>
>diff --git a/selftest/knownfail b/selftest/knownfail
>index 4fe503f4cc1..dab0e64c10b 100644
>--- a/selftest/knownfail
>+++ b/selftest/knownfail
>@@ -144,6 +144,7 @@
> ^samba4.raw.acls.*.create_owner_file
> ^samba4.smb2.create.*.acldir
> ^samba4.smb2.create.*.impersonation
>+^samba4.smb2.create.quota-fake-file$ad_dc_ntvfs$ # not supported by the NTVFS
> ^samba4.smb2.acls.*.generic
> ^samba4.smb2.acls.*.inheritflags
> ^samba4.smb2.acls.*.owner
>diff --git a/selftest/knownfail.d/samba3.smb2.create b/selftest/knownfail.d/samba3.smb2.create
>new file mode 100644
>index 00000000000..e1ca027872c
>--- /dev/null
>+++ b/selftest/knownfail.d/samba3.smb2.create
>@@ -0,0 +1,2 @@
>+^samba3.smb2.create.quota-fake-file$nt4_dc$
>+^samba3.smb2.create.quota-fake-file$ad_dc$
>diff --git a/source4/torture/smb2/create.c b/source4/torture/smb2/create.c
>index c97dfef16d3..5c559bf2d1d 100644
>--- a/source4/torture/smb2/create.c
>+++ b/source4/torture/smb2/create.c
>@@ -2707,6 +2707,68 @@ static bool test_fileid_dir(struct torture_context *tctx,
> 	return ret;
> }
> 
>+/*
>+  test opening quota fakefile handle and returned attributes
>+*/
>+static bool test_smb2_open_quota_fake_file(struct torture_context *tctx,
>+					   struct smb2_tree *tree)
>+{
>+	const char *fname = "$Extend\\$Quota:$Q:$INDEX_ALLOCATION";
>+	struct smb2_create create;
>+	struct smb2_handle h = {{0}};
>+	NTSTATUS status;
>+	bool ret = true;
>+
>+	create = (struct smb2_create) {
>+		.in.desired_access = SEC_RIGHTS_FILE_READ,
>+		.in.file_attributes = FILE_ATTRIBUTE_NORMAL,
>+		.in.share_access = NTCREATEX_SHARE_ACCESS_MASK,
>+		.in.create_disposition = NTCREATEX_DISP_OPEN,
>+		.in.impersonation_level = SMB2_IMPERSONATION_ANONYMOUS,
>+		.in.fname = fname,
>+	};
>+
>+	status = smb2_create(tree, tree, &create);
>+	torture_assert_ntstatus_ok_goto(tctx, status, ret, done,
>+					"smb2_create failed\n");
>+	h = create.out.file.handle;
>+
>+	torture_assert_u64_equal_goto(tctx,
>+				      create.out.file_attr,
>+				      FILE_ATTRIBUTE_HIDDEN
>+				      | FILE_ATTRIBUTE_SYSTEM
>+				      | FILE_ATTRIBUTE_DIRECTORY
>+				      | FILE_ATTRIBUTE_ARCHIVE,
>+				      ret,
>+				      done,
>+				      "Wrong attributes\n");
>+
>+	torture_assert_u64_equal_goto(tctx,
>+				      create.out.create_time, 0,
>+				      ret,
>+				      done,
>+				      "create_time is not 0\n");
>+	torture_assert_u64_equal_goto(tctx,
>+				      create.out.access_time, 0,
>+				      ret,
>+				      done,
>+				      "access_time is not 0\n");
>+	torture_assert_u64_equal_goto(tctx,
>+				      create.out.write_time, 0,
>+				      ret,
>+				      done,
>+				      "write_time is not 0\n");
>+	torture_assert_u64_equal_goto(tctx,
>+				      create.out.change_time, 0,
>+				      ret,
>+				      done,
>+				      "change_time is not 0\n");
>+
>+done:
>+	smb2_util_close(tree, h);
>+	return ret;
>+}
>+
> /*
>    basic testing of SMB2 read
> */
>@@ -2727,6 +2789,7 @@ struct torture_suite *torture_smb2_create_init(TALLOC_CTX *ctx)
> 	torture_suite_add_1smb2_test(suite, "nulldacl", test_create_null_dacl);
> 	torture_suite_add_1smb2_test(suite, "mkdir-dup", test_mkdir_dup);
> 	torture_suite_add_1smb2_test(suite, "dir-alloc-size", test_dir_alloc_size);
>+	torture_suite_add_1smb2_test(suite, "quota-fake-file", test_smb2_open_quota_fake_file);
> 
> 	suite->description = talloc_strdup(suite, "SMB2-CREATE tests");
> 
>-- 
>2.31.1
>
>
>From 04aad24ee58ee411fdd87185fa213b1bc7abc35d Mon Sep 17 00:00:00 2001
>From: Ralph Boehme <slow@samba.org>
>Date: Fri, 4 Jun 2021 16:58:20 +0200
>Subject: [PATCH 2/3] smbd: handle fake file handles in dos_mode()
>
>This ensures SMB requests on the quote fake file "$Extend/$Quota" don't hit the
>VFS, where specifically in vfs_gpfs we log an error message if we fail to read
>the DOS attributes for a file with
>
>  vfs_gpfs_get_dos_attributes: Getting winattrs failed for $Extend/$Quota
>
>Signed-off-by: Ralph Boehme <slow@samba.org>
>---
> source3/smbd/dosmode.c | 20 ++++++++++++++++++++
> 1 file changed, 20 insertions(+)
>
>diff --git a/source3/smbd/dosmode.c b/source3/smbd/dosmode.c
>index 4012d6e64c9..a6b8f170192 100644
>--- a/source3/smbd/dosmode.c
>+++ b/source3/smbd/dosmode.c
>@@ -27,6 +27,7 @@
> #include "smbd/smbd.h"
> #include "lib/param/loadparm.h"
> #include "lib/util/tevent_ntstatus.h"
>+#include "fake_file.h"
> 
> static NTSTATUS get_file_handle_for_metadata(connection_struct *conn,
> 				const struct smb_filename *smb_fname,
>@@ -754,6 +755,7 @@ uint32_t dos_mode(connection_struct *conn, struct smb_filename *smb_fname)
> {
> 	uint32_t result = 0;
> 	NTSTATUS status = NT_STATUS_OK;
>+	enum FAKE_FILE_TYPE fake_file_type;
> 
> 	DEBUG(8,("dos_mode: %s\n", smb_fname_str_dbg(smb_fname)));
> 
>@@ -761,6 +763,24 @@ uint32_t dos_mode(connection_struct *conn, struct smb_filename *smb_fname)
> 		return 0;
> 	}
> 
>+	fake_file_type = is_fake_file(smb_fname);
>+
>+	switch (fake_file_type) {
>+	case FAKE_FILE_TYPE_NAMED_PIPE_PROXY:
>+	case FAKE_FILE_TYPE_NAMED_PIPE:
>+		return FILE_ATTRIBUTE_NORMAL;
>+
>+	case FAKE_FILE_TYPE_QUOTA:
>+		/* From Windows 2016 */
>+		return FILE_ATTRIBUTE_HIDDEN
>+			| FILE_ATTRIBUTE_SYSTEM
>+			| FILE_ATTRIBUTE_DIRECTORY
>+			| FILE_ATTRIBUTE_ARCHIVE;
>+
>+	case FAKE_FILE_TYPE_NONE:
>+		break;
>+	}
>+
> 	/* Get the DOS attributes via the VFS if we can */
> 	status = SMB_VFS_GET_DOS_ATTRIBUTES(conn, smb_fname, &result);
> 	if (!NT_STATUS_IS_OK(status)) {
>-- 
>2.31.1
>
>
>From 2991219c19cf8ade85cb0774dce947ab06d5c0f5 Mon Sep 17 00:00:00 2001
>From: Ralph Boehme <slow@samba.org>
>Date: Mon, 7 Jun 2021 19:02:56 +0200
>Subject: [PATCH 3/3] smbd: return correct timestamps for quota fake file
>
>Prior to 572d4e3a56eef00e29f93482daa21647af7310d0 it was sufficient to
>initialize struct timespec to zero to return NTTIME 0 (ie not set) over
>SMB.
>
>This fixes the same problem from bug 14714 where the timestamps in an SMB2 CLOSE
>response.
>
>Windows of course does return *some* timestamps, but as it's neither documented
>nor was I able to figure out where they would be coming from, as well as the
>Windows client apparently doesn't care, I didn't bother with implementing some
>sophisticated heuristic to return some timestamps.
>
>BUG: https://bugzilla.samba.org/show_bug.cgi?id=14731
>
>Signed-off-by: Ralph Boehme <slow@samba.org>
>Reviewed-by: Jeremy Allison <jra@samba.org>
>
>Autobuild-User(master): Jeremy Allison <jra@samba.org>
>Autobuild-Date(master): Wed Jun  9 20:38:02 UTC 2021 on sn-devel-184
>
>(cherry picked from commit 52a421111218d94d2e5cb131648bcdf5411d910b)
>---
> selftest/knownfail.d/samba3.smb2.create | 2 --
> source3/smbd/filename.c                 | 5 +++++
> 2 files changed, 5 insertions(+), 2 deletions(-)
> delete mode 100644 selftest/knownfail.d/samba3.smb2.create
>
>diff --git a/selftest/knownfail.d/samba3.smb2.create b/selftest/knownfail.d/samba3.smb2.create
>deleted file mode 100644
>index e1ca027872c..00000000000
>--- a/selftest/knownfail.d/samba3.smb2.create
>+++ /dev/null
>@@ -1,2 +0,0 @@
>-^samba3.smb2.create.quota-fake-file$nt4_dc$
>-^samba3.smb2.create.quota-fake-file$ad_dc$
>diff --git a/source3/smbd/filename.c b/source3/smbd/filename.c
>index 73ea63ffd25..db23fe40587 100644
>--- a/source3/smbd/filename.c
>+++ b/source3/smbd/filename.c
>@@ -1958,6 +1958,11 @@ static NTSTATUS filename_convert_internal(TALLOC_CTX *ctx,
> 			return NT_STATUS_NO_MEMORY;
> 		}
> 		smb_fname->st = (SMB_STRUCT_STAT) { .st_ex_nlink = 1 };
>+		smb_fname->st.st_ex_btime = (struct timespec){0, SAMBA_UTIME_OMIT};
>+		smb_fname->st.st_ex_atime = (struct timespec){0, SAMBA_UTIME_OMIT};
>+		smb_fname->st.st_ex_mtime = (struct timespec){0, SAMBA_UTIME_OMIT};
>+		smb_fname->st.st_ex_ctime = (struct timespec){0, SAMBA_UTIME_OMIT};
>+
> 		*_smb_fname = smb_fname;
> 		return NT_STATUS_OK;
> 	}
>-- 
>2.31.1
>

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Attachments on bug 14731: 16647 | 16648 | 16649 | 16650