From: Allison Henderson <allison.henderson@oracle.com>
Cc: linux-xfs@vger.kernel.org
Subject: Re: [PATCH 04/17] Remove all strlen calls in all xfs_attr_* functions for attr names.
Date: Fri, 20 Oct 2017 18:10:33 -0700 [thread overview]
Message-ID: <1f2dea42-fffe-cc79-1582-278b9760db19@oracle.com> (raw)
In-Reply-To: <20171019191552.GE4755@magnolia>
On 10/19/2017 12:15 PM, Darrick J. Wong wrote:
> On Wed, Oct 18, 2017 at 03:55:20PM -0700, Allison Henderson wrote:
>> Parent pointer attributes use a binary name, so strlen will not work.
>> Calling functions will need to pass in the name length
>>
>> Signed-off-by: Allison Henderson<allison.henderson@oracle.com>
>> ---
>> fs/xfs/libxfs/xfs_attr.c | 12 ++++++++----
>> fs/xfs/xfs_acl.c | 12 +++++++-----
>> fs/xfs/xfs_attr.h | 9 +++++----
>> fs/xfs/xfs_ioctl.c | 13 ++++++++++---
>> fs/xfs/xfs_iops.c | 6 ++++--
>> fs/xfs/xfs_trans_attr.c | 2 +-
>> fs/xfs/xfs_xattr.c | 10 +++++++---
>> 7 files changed, 42 insertions(+), 22 deletions(-)
>>
>> diff --git a/fs/xfs/libxfs/xfs_attr.c b/fs/xfs/libxfs/xfs_attr.c
>> index 59f3502..b94f0cd 100644
>> --- a/fs/xfs/libxfs/xfs_attr.c
>> +++ b/fs/xfs/libxfs/xfs_attr.c
>> @@ -79,6 +79,7 @@ xfs_attr_args_init(
>> struct xfs_da_args *args,
>> struct xfs_inode *dp,
>> const unsigned char *name,
>> + int namelen,
> I think these should be size_t since they describe memory buffer sizes,
> and that's what strlen() returns.
>
> At least change it to 'unsigned int' since negative size makes no sense here...
>
> --D
>
Ok, will update. Thx!
>> int flags)
>> {
>>
>> @@ -91,7 +92,7 @@ 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 */
>>
>> @@ -137,6 +138,7 @@ int
>> xfs_attr_get(
>> struct xfs_inode *ip,
>> const unsigned char *name,
>> + int namelen,
>> unsigned char *value,
>> int *valuelenp,
>> int flags)
>> @@ -150,7 +152,7 @@ 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;
>>
>> @@ -386,6 +388,7 @@ int
>> xfs_attr_set(
>> struct xfs_inode *dp,
>> const unsigned char *name,
>> + int namelen,
>> unsigned char *value,
>> int valuelen,
>> int flags)
>> @@ -402,7 +405,7 @@ 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;
>>
>> @@ -497,6 +500,7 @@ int
>> xfs_attr_remove(
>> struct xfs_inode *dp,
>> const unsigned char *name,
>> + int namelen,
>> int flags)
>> {
>> struct xfs_mount *mp = dp->i_mount;
>> @@ -510,7 +514,7 @@ 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/fs/xfs/xfs_acl.c b/fs/xfs/xfs_acl.c
>> index 7034e17..72eca24 100644
>> --- a/fs/xfs/xfs_acl.c
>> +++ b/fs/xfs/xfs_acl.c
>> @@ -153,8 +153,8 @@ xfs_get_acl(struct inode *inode, int type)
>> if (!xfs_acl)
>> return ERR_PTR(-ENOMEM);
>>
>> - error = xfs_attr_get(ip, ea_name, (unsigned char *)xfs_acl,
>> - &len, ATTR_ROOT);
>> + error = xfs_attr_get(ip, ea_name, strlen((const char *)ea_name),
>> + (unsigned char *)xfs_acl, &len, ATTR_ROOT);
>> if (error) {
>> /*
>> * If the attribute doesn't exist make sure we have a negative
>> @@ -204,15 +204,17 @@ __xfs_set_acl(struct inode *inode, struct posix_acl *acl, int type)
>> len -= sizeof(struct xfs_acl_entry) *
>> (XFS_ACL_MAX_ENTRIES(ip->i_mount) - acl->a_count);
>>
>> - error = xfs_attr_set(ip, ea_name, (unsigned char *)xfs_acl,
>> - len, ATTR_ROOT);
>> + error = xfs_attr_set(ip, ea_name, strlen((const char *)ea_name),
>> + (unsigned char *)xfs_acl, len, ATTR_ROOT);
>>
>> kmem_free(xfs_acl);
>> } else {
>> /*
>> * A NULL ACL argument means we want to remove the ACL.
>> */
>> - error = xfs_attr_remove(ip, ea_name, ATTR_ROOT);
>> + error = xfs_attr_remove(ip, ea_name,
>> + strlen((const char *)ea_name),
>> + ATTR_ROOT);
>>
>> /*
>> * If the attribute didn't exist to start with that's fine.
>> diff --git a/fs/xfs/xfs_attr.h b/fs/xfs/xfs_attr.h
>> index f4a53fd..532567e 100644
>> --- a/fs/xfs/xfs_attr.h
>> +++ b/fs/xfs/xfs_attr.h
>> @@ -161,17 +161,18 @@ int xfs_attr_list_int_ilocked(struct xfs_attr_list_context *);
>> 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,
>> +int xfs_attr_get(struct xfs_inode *ip, const unsigned char *name, int namelen,
>> unsigned char *value, int *valuelenp, int flags);
>> -int xfs_attr_set(struct xfs_inode *dp, const unsigned char *name,
>> +int xfs_attr_set(struct xfs_inode *dp, const unsigned char *name, int namelen,
>> unsigned char *value, int valuelen, int flags);
>> int xfs_attr_set_args(struct xfs_da_args *args, int flags, bool roll_trans);
>> -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,
>> + int namelen, int flags);
>> int xfs_attr_remove_args(struct xfs_da_args *args, int flags);
>> int xfs_attr_list(struct xfs_inode *dp, char *buffer, int bufsize,
>> int flags, struct attrlist_cursor_kern *cursor);
>> int xfs_attr_args_init(struct xfs_da_args *args, struct xfs_inode *dp,
>> - const unsigned char *name, int flags);
>> + const unsigned char *name, int namelen, int flags);
>> int xfs_attr_calc_size(struct xfs_da_args *args, int *local);
>> int xfs_attr_set_deferred(struct xfs_inode *dp, struct xfs_defer_ops *dfops,
>> const unsigned char *name, unsigned int name_len,
>> diff --git a/fs/xfs/xfs_ioctl.c b/fs/xfs/xfs_ioctl.c
>> index aa75389..1c9f813 100644
>> --- a/fs/xfs/xfs_ioctl.c
>> +++ b/fs/xfs/xfs_ioctl.c
>> @@ -448,6 +448,7 @@ xfs_attrmulti_attr_get(
>> {
>> unsigned char *kbuf;
>> int error = -EFAULT;
>> + int namelen;
>>
>> if (*len > XFS_XATTR_SIZE_MAX)
>> return -EINVAL;
>> @@ -455,7 +456,9 @@ xfs_attrmulti_attr_get(
>> if (!kbuf)
>> return -ENOMEM;
>>
>> - error = xfs_attr_get(XFS_I(inode), name, kbuf, (int *)len, flags);
>> + namelen = strlen((const char *)name);
>> + error = xfs_attr_get(XFS_I(inode), name, namelen,
>> + kbuf, (int *)len, flags);
>> if (error)
>> goto out_kfree;
>>
>> @@ -477,6 +480,7 @@ xfs_attrmulti_attr_set(
>> {
>> unsigned char *kbuf;
>> int error;
>> + int namelen;
>>
>> if (IS_IMMUTABLE(inode) || IS_APPEND(inode))
>> return -EPERM;
>> @@ -487,7 +491,8 @@ xfs_attrmulti_attr_set(
>> if (IS_ERR(kbuf))
>> return PTR_ERR(kbuf);
>>
>> - error = xfs_attr_set(XFS_I(inode), name, kbuf, len, flags);
>> + namelen = strlen((const char *)name);
>> + error = xfs_attr_set(XFS_I(inode), name, namelen, kbuf, len, flags);
>> if (!error)
>> xfs_forget_acl(inode, name, flags);
>> kfree(kbuf);
>> @@ -501,10 +506,12 @@ xfs_attrmulti_attr_remove(
>> uint32_t flags)
>> {
>> int error;
>> + int namelen;
>>
>> if (IS_IMMUTABLE(inode) || IS_APPEND(inode))
>> return -EPERM;
>> - error = xfs_attr_remove(XFS_I(inode), name, flags);
>> + namelen = strlen((const char *)name);
>> + error = xfs_attr_remove(XFS_I(inode), name, namelen, flags);
>> if (!error)
>> xfs_forget_acl(inode, name, flags);
>> return error;
>> diff --git a/fs/xfs/xfs_iops.c b/fs/xfs/xfs_iops.c
>> index 17081c7..5247bfc 100644
>> --- a/fs/xfs/xfs_iops.c
>> +++ b/fs/xfs/xfs_iops.c
>> @@ -70,8 +70,10 @@ xfs_initxattrs(
>> int error = 0;
>>
>> for (xattr = xattr_array; xattr->name != NULL; xattr++) {
>> - error = xfs_attr_set(ip, xattr->name, xattr->value,
>> - xattr->value_len, ATTR_SECURE);
>> + error = xfs_attr_set(ip, xattr->name,
>> + strlen((const char *)xattr->name),
>> + xattr->value, xattr->value_len,
>> + ATTR_SECURE);
>> if (error < 0)
>> break;
>> }
>> diff --git a/fs/xfs/xfs_trans_attr.c b/fs/xfs/xfs_trans_attr.c
>> index 39eb18d..a45e9d0 100644
>> --- a/fs/xfs/xfs_trans_attr.c
>> +++ b/fs/xfs/xfs_trans_attr.c
>> @@ -93,7 +93,7 @@ xfs_trans_attr(
>> ASSERT(XFS_IFORK_Q((dp)));
>> tp->t_flags |= XFS_TRANS_RESERVE;
>>
>> - error = xfs_attr_args_init(&args, dp, name, flags);
>> + error = xfs_attr_args_init(&args, dp, name, name_len, flags);
>> if (error)
>> return error;
>>
>> diff --git a/fs/xfs/xfs_xattr.c b/fs/xfs/xfs_xattr.c
>> index 0594db4..4ef09c4 100644
>> --- a/fs/xfs/xfs_xattr.c
>> +++ b/fs/xfs/xfs_xattr.c
>> @@ -38,6 +38,7 @@ xfs_xattr_get(const struct xattr_handler *handler, struct dentry *unused,
>> int xflags = handler->flags;
>> struct xfs_inode *ip = XFS_I(inode);
>> int error, asize = size;
>> + int namelen = strlen((const char *)name);
>>
>> /* Convert Linux syscall to XFS internal ATTR flags */
>> if (!size) {
>> @@ -45,7 +46,8 @@ xfs_xattr_get(const struct xattr_handler *handler, struct dentry *unused,
>> value = NULL;
>> }
>>
>> - error = xfs_attr_get(ip, (unsigned char *)name, value, &asize, xflags);
>> + error = xfs_attr_get(ip, (unsigned char *)name, namelen, value,
>> + &asize, xflags);
>> if (error)
>> return error;
>> return asize;
>> @@ -81,6 +83,7 @@ xfs_xattr_set(const struct xattr_handler *handler, struct dentry *unused,
>> int xflags = handler->flags;
>> struct xfs_inode *ip = XFS_I(inode);
>> int error;
>> + int namelen = strlen((const char *)name);
>>
>> /* Convert Linux syscall to XFS internal ATTR flags */
>> if (flags & XATTR_CREATE)
>> @@ -89,8 +92,9 @@ xfs_xattr_set(const struct xattr_handler *handler, struct dentry *unused,
>> xflags |= ATTR_REPLACE;
>>
>> if (!value)
>> - return xfs_attr_remove(ip, (unsigned char *)name, xflags);
>> - error = xfs_attr_set(ip, (unsigned char *)name,
>> + return xfs_attr_remove(ip, (unsigned char *)name,
>> + namelen, xflags);
>> + error = xfs_attr_set(ip, (unsigned char *)name, namelen,
>> (void *)value, size, xflags);
>> if (!error)
>> xfs_forget_acl(inode, name, xflags);
>> --
>> 2.7.4
>>
>> --
>> To unsubscribe from this list: send the line "unsubscribe linux-xfs" in
>> the body of a message tomajordomo@vger.kernel.org
>> More majordomo info athttp://vger.kernel.org/majordomo-info.html
next prev parent reply other threads:[~2017-10-21 1:10 UTC|newest]
Thread overview: 62+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-10-18 22:55 [PATCH 00/17] Parent Pointers V3 Allison Henderson
2017-10-18 22:55 ` [PATCH 01/17] Add helper functions xfs_attr_set_args and xfs_attr_remove_args Allison Henderson
2017-10-19 20:03 ` Darrick J. Wong
2017-10-21 1:14 ` Allison Henderson
2017-10-18 22:55 ` [PATCH 02/17] Set up infastructure for deferred attribute operations Allison Henderson
2017-10-19 19:02 ` Darrick J. Wong
2017-10-21 1:08 ` Allison Henderson
2017-10-18 22:55 ` [PATCH 03/17] Add xfs_attr_set_defered and xfs_attr_remove_defered Allison Henderson
2017-10-19 19:13 ` Darrick J. Wong
2017-10-21 1:08 ` Allison Henderson
2017-10-18 22:55 ` [PATCH 04/17] Remove all strlen calls in all xfs_attr_* functions for attr names Allison Henderson
2017-10-19 19:15 ` Darrick J. Wong
2017-10-21 1:10 ` Allison Henderson [this message]
2017-10-18 22:55 ` [PATCH 05/17] xfs: get directory offset when adding directory name Allison Henderson
2017-10-18 22:55 ` [PATCH 06/17] xfs: get directory offset when removing " Allison Henderson
2017-10-19 19:17 ` Darrick J. Wong
2017-10-21 1:11 ` Allison Henderson
2017-10-18 22:55 ` [PATCH 07/17] xfs: get directory offset when replacing a " Allison Henderson
2017-10-18 22:55 ` [PATCH 08/17] xfs: add parent pointer support to attribute code Allison Henderson
2017-10-18 22:55 ` [PATCH 09/17] xfs: define parent pointer xattr format Allison Henderson
2017-10-18 22:55 ` [PATCH 10/17] :xfs: extent transaction reservations for parent attributes Allison Henderson
2017-10-19 18:24 ` Darrick J. Wong
[not found] ` <8680e0c1-ada8-06e3-e397-61a5076030be@oracle.com>
2017-10-20 23:45 ` Darrick J. Wong
2017-10-21 0:12 ` Allison Henderson
2017-10-21 1:07 ` Allison Henderson
2017-10-18 22:55 ` [PATCH 11/17] Add the extra space requirements for parent pointer attributes when calculating the minimum log size during mkfs Allison Henderson
2017-10-19 18:13 ` Darrick J. Wong
2017-10-21 1:07 ` Allison Henderson
2017-10-18 22:55 ` [PATCH 12/17] xfs: parent pointer attribute creation Allison Henderson
2017-10-19 19:36 ` Darrick J. Wong
[not found] ` <9185d3e8-4b41-b2d8-294b-934f7d3409f0@oracle.com>
2017-10-21 0:03 ` Darrick J. Wong
2017-10-21 1:11 ` Allison Henderson
2017-10-18 22:55 ` [PATCH 13/17] xfs: add parent attributes to link Allison Henderson
2017-10-19 19:40 ` Darrick J. Wong
2017-10-21 1:12 ` Allison Henderson
2017-10-18 22:55 ` [PATCH 14/17] xfs: remove parent pointers in unlink Allison Henderson
2017-10-19 19:43 ` Darrick J. Wong
2017-10-21 1:12 ` Allison Henderson
2017-10-18 22:55 ` [PATCH 15/17] xfs_bmap_add_attrfork(): re-add error handling from set_attrforkoff() call Allison Henderson
2017-10-19 19:43 ` Darrick J. Wong
2017-10-21 1:13 ` Allison Henderson
2017-10-18 22:55 ` [PATCH 16/17] Add parent pointers to rename Allison Henderson
2017-10-18 22:55 ` [PATCH 17/17] Add the parent pointer support to the superblock version 5 Allison Henderson
2017-10-19 3:57 ` Amir Goldstein
2017-10-19 20:06 ` Darrick J. Wong
2017-10-20 3:18 ` Amir Goldstein
2017-10-19 19:45 ` Darrick J. Wong
2017-10-21 1:13 ` Allison Henderson
2017-10-19 4:11 ` [PATCH 00/17] Parent Pointers V3 Amir Goldstein
2017-10-20 3:22 ` Amir Goldstein
2017-10-21 1:06 ` Allison Henderson
2017-10-20 22:41 ` Dave Chinner
2017-10-21 7:34 ` Amir Goldstein
2017-10-22 23:27 ` Dave Chinner
2017-10-23 4:30 ` Amir Goldstein
2017-10-23 5:32 ` Dave Chinner
2017-10-23 6:48 ` Amir Goldstein
2017-10-23 8:40 ` Dave Chinner
2017-10-23 9:06 ` Amir Goldstein
2017-10-23 17:14 ` Darrick J. Wong
2017-10-23 19:20 ` Amir Goldstein
-- strict thread matches above, loose matches on Subject: below --
2017-10-06 22:05 [PATCH 00/17] Parent Pointers V2 Allison Henderson
2017-10-06 22:05 ` [PATCH 04/17] Remove all strlen calls in all xfs_attr_* functions for attr names Allison Henderson
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1f2dea42-fffe-cc79-1582-278b9760db19@oracle.com \
--to=allison.henderson@oracle.com \
--cc=linux-xfs@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).