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orangefs: clean up oversize xattr validation 

Also don't check flags as this has been validated by the VFS already.

Fix an off-by-one error in the max size checking.

Stop logging just because userspace wants to write attributes which do
not fit.

This and the previous commit fix xfstests generic/020.

Signed-off-by: Martin Brandenburg <martin@omnibond.com>
Cc: stable@vger.kernel.org
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
This commit is contained in:
Martin Brandenburg 2017-04-25 15:37:57 -04:00 committed by Mike Marshall
parent a956af337b
commit e675c5ec51
1 changed files with 7 additions and 17 deletions
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24
fs/orangefs/xattr.c
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@ -76,11 +76,8 @@ ssize_t orangefs_inode_getxattr(struct inode *inode, const char *name,
if (S_ISLNK(inode->i_mode))
return -EOPNOTSUPP;
if (strlen(name) >= ORANGEFS_MAX_XATTR_NAMELEN) {
gossip_err("Invalid key length (%d)\n",
(int)strlen(name));
if (strlen(name) > ORANGEFS_MAX_XATTR_NAMELEN)
return -EINVAL;
}
fsuid = from_kuid(&init_user_ns, current_fsuid());
fsgid = from_kgid(&init_user_ns, current_fsgid());
@ -172,6 +169,9 @@ static int orangefs_inode_removexattr(struct inode *inode, const char *name,
struct orangefs_kernel_op_s *new_op = NULL;
int ret = -ENOMEM;
if (strlen(name) > ORANGEFS_MAX_XATTR_NAMELEN)
return -EINVAL;
down_write(&orangefs_inode->xattr_sem);
new_op = op_alloc(ORANGEFS_VFS_OP_REMOVEXATTR);
if (!new_op)
@ -231,23 +231,13 @@ int orangefs_inode_setxattr(struct inode *inode, const char *name,
"%s: name %s, buffer_size %zd\n",
__func__, name, size);
if (size >= ORANGEFS_MAX_XATTR_VALUELEN ||
flags < 0) {
gossip_err("orangefs_inode_setxattr: bogus values of size(%d), flags(%d)\n",
(int)size,
flags);
if (size > ORANGEFS_MAX_XATTR_VALUELEN)
return -EINVAL;
if (strlen(name) > ORANGEFS_MAX_XATTR_NAMELEN)
return -EINVAL;
}
internal_flag = convert_to_internal_xattr_flags(flags);
if (strlen(name) >= ORANGEFS_MAX_XATTR_NAMELEN) {
gossip_err
("orangefs_inode_setxattr: bogus key size (%d)\n",
(int)(strlen(name)));
return -EINVAL;
}
/* This is equivalent to a removexattr */
if (size == 0 && value == NULL) {
gossip_debug(GOSSIP_XATTR_DEBUG,