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[010/110] xfs: create a predicate to determine if two xfs_names are the same

Message ID 171142131530.2215168.8977912361884980177.stgit@frogsfrogsfrogs (mailing list archive)
State Superseded, archived
Headers show
Series [001/110] xfs: convert kmem_zalloc() to kzalloc() | expand

Commit Message

Darrick J. Wong March 26, 2024, 3:31 a.m. UTC 
From: Darrick J. Wong <djwong@kernel.org>

Source kernel commit: d9c0775897147bab54410611ac2659a7477c770c

Create a simple predicate to determine if two xfs_names are the same
objects or have the exact same name.  The comparison is always case
sensitive.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
---
 libxfs/xfs_dir2.h |   12 ++++++++++++
 1 file changed, 12 insertions(+)
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Patch

diff --git a/libxfs/xfs_dir2.h b/libxfs/xfs_dir2.h
index 7d7cd8d808e4..8497d041f316 100644
--- a/libxfs/xfs_dir2.h
+++ b/libxfs/xfs_dir2.h
@@ -24,6 +24,18 @@  struct xfs_dir3_icleaf_hdr;
 extern const struct xfs_name	xfs_name_dotdot;
 extern const struct xfs_name	xfs_name_dot;
 
+static inline bool
+xfs_dir2_samename(
+	const struct xfs_name	*n1,
+	const struct xfs_name	*n2)
+{
+	if (n1 == n2)
+		return true;
+	if (n1->len != n2->len)
+		return false;
+	return !memcmp(n1->name, n2->name, n1->len);
+}
+
 /*
  * Convert inode mode to directory entry filetype
  */