Attachment 18428 Details for Bug 15686 – patch from master for v4-20-test (part 3)

[patch] patch from master for v4-20-test (part 3)

4.20.patch (text/plain), 4.04 KB, created by Anoop C S on 2024-08-30 11:06:32 UTC

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Creator: Anoop C S

Created: 2024-08-30 11:06:32 UTC

Size: 4.04 KB

patch

obsolete

>From 7ae19275d589bf8234ff3acb623fe630fdf1fed4 Mon Sep 17 00:00:00 2001
>From: Shachar Sharon <ssharon@redhat.com>
>Date: Tue, 20 Aug 2024 12:06:40 +0300
>Subject: [PATCH 1/2] vfs_ceph_new: add missing newline in debug-logging
>
>Commit d00f20f3 ("vfs_ceph_new: debug-log upon libcephfs low-level
>calls") introduced debug-logging before each call to libcephfs low-level
>APIs. Unfortunately, one of the logging messages missed the terminating
>newline ('\n') character.
>
>BUG: https://bugzilla.samba.org/show_bug.cgi?id=15686
>
>Signed-off-by: Shachar Sharon <ssharon@redhat.com>
>Reviewed-by: John Mulligan <jmulligan@samba.org>
>Reviewed-by: Anoop C S <anoopcs@samba.org>
>
>Autobuild-User(master): Anoop C S <anoopcs@samba.org>
>Autobuild-Date(master): Wed Aug 21 14:18:07 UTC 2024 on atb-devel-224
>
>(cherry picked from commit cbba4008a7fb9e6e91d0568f25ac481b60fda96f)
>---
> source3/modules/vfs_ceph_new.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
>diff --git a/source3/modules/vfs_ceph_new.c b/source3/modules/vfs_ceph_new.c
>index 25e78444fb5..9c36f762aa6 100644
>--- a/source3/modules/vfs_ceph_new.c
>+++ b/source3/modules/vfs_ceph_new.c
>@@ -730,7 +730,7 @@ static int vfs_ceph_ll_lookup(const struct vfs_handle_struct *handle,
> 	struct UserPerm *uperm = NULL;
> 	int ret = -1;
> 
>-	DBG_DEBUG("[ceph] ceph_ll_lookup: parent-ino=%" PRIu64 " name=%s",
>+	DBG_DEBUG("[ceph] ceph_ll_lookup: parent-ino=%" PRIu64 " name=%s\n",
> 		  parent->ino, name);
> 
> 	uperm = vfs_ceph_userperm_new(handle);
>-- 
>2.46.0
>
>
>From 3449f46c489b6e9532f326835a6a5b43ebdc4780 Mon Sep 17 00:00:00 2001
>From: Shachar Sharon <ssharon@redhat.com>
>Date: Tue, 20 Aug 2024 12:45:07 +0300
>Subject: [PATCH 2/2] vfs_ceph_new: handle case of readlinkat with empty name
> string
>
>Commit 53c9269b (vfs_ceph_new: use low-level APIs for symlink/readlink)
>introduced readlinkat using libcephfs low-level APIs. However, it does
>not handle properly the case where readlinkat operates on empty name
>string (see man readlinkat(2)), such as:
>
>  fd = openat(dirfd, symname, O_PATH | O_NOFOLLOW, 0);
>  readlinkat(fd, "", buf, bufsiz);
>
>Handle this special case of readlinkat with empty name string by using
>a reference to the symlink inode itself.
>
>BUG: https://bugzilla.samba.org/show_bug.cgi?id=15686
>
>Signed-off-by: Shachar Sharon <ssharon@redhat.com>
>Reviewed-by: Anoop C S <anoopcs@samba.org>
>Reviewed-by: Guenther Deschner <gd@samba.org>
>
>Autobuild-User(master): Anoop C S <anoopcs@samba.org>
>Autobuild-Date(master): Fri Aug 30 10:42:27 UTC 2024 on atb-devel-224
>
>(cherry picked from commit 22182f90e8e7876a9895f77e736d2b96b18b174f)
>---
> source3/modules/vfs_ceph_new.c | 33 ++++++++++++++++++++++-----------
> 1 file changed, 22 insertions(+), 11 deletions(-)
>
>diff --git a/source3/modules/vfs_ceph_new.c b/source3/modules/vfs_ceph_new.c
>index 9c36f762aa6..8d4866e054b 100644
>--- a/source3/modules/vfs_ceph_new.c
>+++ b/source3/modules/vfs_ceph_new.c
>@@ -2455,7 +2455,6 @@ static int vfs_ceph_readlinkat(struct vfs_handle_struct *handle,
> 		size_t bufsiz)
> {
> 	int result = -1;
>-	struct vfs_ceph_iref iref = {0};
> 	struct vfs_ceph_fh *dircfh = NULL;
> 
> 	DBG_DEBUG("[CEPH] readlinkat(%p, %s, %p, %llu)\n",
>@@ -2468,17 +2467,29 @@ static int vfs_ceph_readlinkat(struct vfs_handle_struct *handle,
> 	if (result != 0) {
> 		goto out;
> 	}
>-	result = vfs_ceph_ll_lookupat(handle,
>-				      dircfh,
>-				      smb_fname->base_name,
>-				      &iref);
>-	if (result != 0) {
>-		goto out;
>-	}
>-
>-	result = vfs_ceph_ll_readlinkat(handle, dircfh, &iref, buf, bufsiz);
>+	if (strcmp(smb_fname->base_name, "") != 0) {
>+		struct vfs_ceph_iref iref = {0};
> 
>-	vfs_ceph_iput(handle, &iref);
>+		result = vfs_ceph_ll_lookupat(handle,
>+					      dircfh,
>+					      smb_fname->base_name,
>+					      &iref);
>+		if (result != 0) {
>+			goto out;
>+		}
>+		result = vfs_ceph_ll_readlinkat(handle,
>+						dircfh,
>+						&iref,
>+						buf,
>+						bufsiz);
>+		vfs_ceph_iput(handle, &iref);
>+	} else {
>+		result = vfs_ceph_ll_readlinkat(handle,
>+						dircfh,
>+						&dircfh->iref,
>+						buf,
>+						bufsiz);
>+	}
> out:
> 	DBG_DEBUG("[CEPH] readlinkat(...) = %d\n", result);
> 	return status_code(result);
>-- 
>2.46.0
>

Flags:

gd: review+
anoopcs: ci-passed+

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