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From: Allison Collins <allison.henderson@oracle.com>
To: linux-xfs@vger.kernel.org
Subject: [PATCH v5 01/14] xfsprogs: Remove all strlen in all xfs_attr_* functions for attr names.
Date: Wed, 11 Dec 2019 21:17:50 -0700	[thread overview]
Message-ID: <20191212041803.14018-2-allison.henderson@oracle.com> (raw)
In-Reply-To: <20191212041803.14018-1-allison.henderson@oracle.com>

This helps to pre-simplify the extra handling of the null terminator in
delayed operations which use memcpy rather than strlen.  Later
when we introduce parent pointers, attribute names will become binary,
so strlen will not work at all.  Removing uses of strlen now will
help reduce complexities later

Signed-off-by: Allison Collins <allison.henderson@oracle.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
---
 db/attrset.c         |  4 ++--
 libxfs/libxfs_priv.h |  9 +++++----
 libxfs/xfs_attr.c    | 12 ++++++++----
 libxfs/xfs_attr.h    |  8 +++++---
 4 files changed, 20 insertions(+), 13 deletions(-)

diff --git a/db/attrset.c b/db/attrset.c
index 5697250..5c0ec6e9 100644
--- a/db/attrset.c
+++ b/db/attrset.c
@@ -146,7 +146,7 @@ attr_set_f(
 		goto out;
 	}
 
-	if (libxfs_attr_set(ip, (unsigned char *)name,
+	if (libxfs_attr_set(ip, (unsigned char *)name, strlen(name),
 				(unsigned char *)value, valuelen, flags)) {
 		dbprintf(_("failed to set attr %s on inode %llu\n"),
 			name, (unsigned long long)iocur_top->ino);
@@ -222,7 +222,7 @@ attr_remove_f(
 		goto out;
 	}
 
-	if (libxfs_attr_remove(ip, (unsigned char *)name, flags)) {
+	if (libxfs_attr_remove(ip, (unsigned char *)name, strlen(name), flags)) {
 		dbprintf(_("failed to remove attr %s from inode %llu\n"),
 			name, (unsigned long long)iocur_top->ino);
 		goto out;
diff --git a/libxfs/libxfs_priv.h b/libxfs/libxfs_priv.h
index d944efc0..c25c5de 100644
--- a/libxfs/libxfs_priv.h
+++ b/libxfs/libxfs_priv.h
@@ -610,11 +610,12 @@ static inline int test_and_set_bit(int nr, volatile unsigned long *addr)
 int xfs_inode_hasattr(struct xfs_inode *ip);
 int xfs_attr_get_ilocked(struct xfs_inode *ip, struct xfs_da_args *args);
 int xfs_attr_get(struct xfs_inode *ip, const unsigned char *name,
-                unsigned char **value, int *valuelenp, int flags);
+		 size_t namelen, unsigned char **value, int *valuelenp,
+		 int flags);
 int xfs_attr_set(struct xfs_inode *dp, const unsigned char *name,
-                 unsigned char *value, int valuelen, int flags);
-int xfs_attr_remove(struct xfs_inode *dp, const unsigned char *name, int flags);
-
+		 size_t namelen, unsigned char *value, int valuelen, int flags);
+int xfs_attr_remove(struct xfs_inode *dp, const unsigned char *name,
+		    size_t namelen, int flags);
 int xfs_rtbuf_get(struct xfs_mount *mp, struct xfs_trans *tp,
 		  xfs_rtblock_t block, int issum, struct xfs_buf **bpp);
 int xfs_rtcheck_range(struct xfs_mount *mp, struct xfs_trans *tp,
diff --git a/libxfs/xfs_attr.c b/libxfs/xfs_attr.c
index ada1b5f..925094d 100644
--- a/libxfs/xfs_attr.c
+++ b/libxfs/xfs_attr.c
@@ -61,6 +61,7 @@ xfs_attr_args_init(
 	struct xfs_da_args	*args,
 	struct xfs_inode	*dp,
 	const unsigned char	*name,
+	size_t			namelen,
 	int			flags)
 {
 
@@ -73,7 +74,7 @@ xfs_attr_args_init(
 	args->dp = dp;
 	args->flags = flags;
 	args->name = name;
-	args->namelen = strlen((const char *)name);
+	args->namelen = namelen;
 	if (args->namelen >= MAXNAMELEN)
 		return -EFAULT;		/* match IRIX behaviour */
 
@@ -138,6 +139,7 @@ int
 xfs_attr_get(
 	struct xfs_inode	*ip,
 	const unsigned char	*name,
+	size_t			namelen,
 	unsigned char		**value,
 	int			*valuelenp,
 	int			flags)
@@ -153,7 +155,7 @@ xfs_attr_get(
 	if (XFS_FORCED_SHUTDOWN(ip->i_mount))
 		return -EIO;
 
-	error = xfs_attr_args_init(&args, ip, name, flags);
+	error = xfs_attr_args_init(&args, ip, name, namelen, flags);
 	if (error)
 		return error;
 
@@ -337,6 +339,7 @@ int
 xfs_attr_set(
 	struct xfs_inode	*dp,
 	const unsigned char	*name,
+	size_t			namelen,
 	unsigned char		*value,
 	int			valuelen,
 	int			flags)
@@ -352,7 +355,7 @@ xfs_attr_set(
 	if (XFS_FORCED_SHUTDOWN(dp->i_mount))
 		return -EIO;
 
-	error = xfs_attr_args_init(&args, dp, name, flags);
+	error = xfs_attr_args_init(&args, dp, name, namelen, flags);
 	if (error)
 		return error;
 
@@ -441,6 +444,7 @@ int
 xfs_attr_remove(
 	struct xfs_inode	*dp,
 	const unsigned char	*name,
+	size_t			namelen,
 	int			flags)
 {
 	struct xfs_mount	*mp = dp->i_mount;
@@ -452,7 +456,7 @@ xfs_attr_remove(
 	if (XFS_FORCED_SHUTDOWN(dp->i_mount))
 		return -EIO;
 
-	error = xfs_attr_args_init(&args, dp, name, flags);
+	error = xfs_attr_args_init(&args, dp, name, namelen, flags);
 	if (error)
 		return error;
 
diff --git a/libxfs/xfs_attr.h b/libxfs/xfs_attr.h
index 94badfa..106a2f2 100644
--- a/libxfs/xfs_attr.h
+++ b/libxfs/xfs_attr.h
@@ -145,11 +145,13 @@ int xfs_attr_list_int(struct xfs_attr_list_context *);
 int xfs_inode_hasattr(struct xfs_inode *ip);
 int xfs_attr_get_ilocked(struct xfs_inode *ip, struct xfs_da_args *args);
 int xfs_attr_get(struct xfs_inode *ip, const unsigned char *name,
-		 unsigned char **value, int *valuelenp, int flags);
+		 size_t namelen, unsigned char **value, int *valuelenp,
+		 int flags);
 int xfs_attr_set(struct xfs_inode *dp, const unsigned char *name,
-		 unsigned char *value, int valuelen, int flags);
+		 size_t namelen, unsigned char *value, int valuelen, int flags);
 int xfs_attr_set_args(struct xfs_da_args *args);
-int xfs_attr_remove(struct xfs_inode *dp, const unsigned char *name, int flags);
+int xfs_attr_remove(struct xfs_inode *dp, const unsigned char *name,
+		    size_t namelen, int flags);
 int xfs_attr_remove_args(struct xfs_da_args *args);
 int xfs_attr_list(struct xfs_inode *dp, char *buffer, int bufsize,
 		  int flags, struct attrlist_cursor_kern *cursor);
-- 
2.7.4


  reply	other threads:[~2019-12-12  4:18 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-12-12  4:17 [PATCH v5 00/14] xfsprogs: Delayed Ready Attributes Allison Collins
2019-12-12  4:17 ` Allison Collins [this message]
2019-12-12  4:17 ` [PATCH v5 02/14] xfsprogs: Replace attribute parameters with struct xfs_name Allison Collins
2019-12-12  4:17 ` [PATCH v5 03/14] xfsprogs: Embed struct xfs_name in xfs_da_args Allison Collins
2019-12-12  4:17 ` [PATCH v5 04/14] xfsprogs: Add xfs_has_attr and subroutines Allison Collins
2019-12-12  4:17 ` [PATCH v5 05/14] xfsprogs: Factor out new helper functions xfs_attr_rmtval_set Allison Collins
2019-12-12  4:17 ` [PATCH v5 06/14] xfsprogs: Factor up trans handling in xfs_attr3_leaf_flipflags Allison Collins
2019-12-12  4:17 ` [PATCH v5 07/14] xfsprogs: Factor out xfs_attr_leaf_addname helper Allison Collins
2019-12-12  4:17 ` [PATCH v5 08/14] xfsprogs: Factor up xfs_attr_try_sf_addname Allison Collins
2019-12-12  4:17 ` [PATCH v5 09/14] xfsprogs: Factor up trans roll from xfs_attr3_leaf_setflag Allison Collins
2019-12-12  4:17 ` [PATCH v5 10/14] xfsprogs: Factor out xfs_attr_rmtval_invalidate Allison Collins
2019-12-12  4:18 ` [PATCH v5 11/14] xfsprogs: Factor up trans roll in xfs_attr3_leaf_clearflag Allison Collins
2019-12-12  4:18 ` [PATCH v5 12/14] xfsprogs: Check for -ENOATTR or -EEXIST Allison Collins
2019-12-12  4:18 ` [PATCH v5 13/14] xfsprogs: Add delay ready attr remove routines Allison Collins
2019-12-12  4:18 ` [PATCH v5 14/14] xfsprogs: Add delay ready attr set routines Allison Collins

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