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Merge branch 'work.xattr' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

Browse Source 
Pull vfs xattr updates from Al Viro:
 "xattr stuff from Andreas

  This completes the switch to xattr_handler ->get()/->set() from
  ->getxattr/->setxattr/->removexattr"

* 'work.xattr' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  vfs: Remove {get,set,remove}xattr inode operations
  xattr: Stop calling {get,set,remove}xattr inode operations
  vfs: Check for the IOP_XATTR flag in listxattr
  xattr: Add __vfs_{get,set,remove}xattr helpers
  libfs: Use IOP_XATTR flag for empty directory handling
  vfs: Use IOP_XATTR flag for bad-inode handling
  vfs: Add IOP_XATTR inode operations flag
  vfs: Move xattr_resolve_name to the front of fs/xattr.c
  ecryptfs: Switch to generic xattr handlers
  sockfs: Get rid of getxattr iop
  sockfs: getxattr: Fail with -EOPNOTSUPP for invalid attribute names
  kernfs: Switch to generic xattr handlers
  hfs: Switch to generic xattr handlers
  jffs2: Remove jffs2_{get,set,remove}xattr macros
  xattr: Remove unnecessary NULL attribute name check
This commit is contained in:
Linus Torvalds
2016-10-10 17:11:50 -07:00
parent 30066ce675 fd50ecaddf
commit 97d2116708
80 changed files with 471 additions and 687 deletions
Download Patch File Download Diff File Expand all files Collapse all files

25
security/commoncap.c
View File

@@ -310,13 +310,8 @@ int cap_inode_need_killpriv(struct dentry *dentry)
struct inode *inode = d_backing_inode(dentry);
int error;
if (!inode->i_op->getxattr)
return 0;
error = inode->i_op->getxattr(dentry, inode, XATTR_NAME_CAPS, NULL, 0);
if (error <= 0)
return 0;
return 1;
error = __vfs_getxattr(dentry, inode, XATTR_NAME_CAPS, NULL, 0);
return error > 0;
}
/**
@@ -329,12 +324,12 @@ int cap_inode_need_killpriv(struct dentry *dentry)
*/
int cap_inode_killpriv(struct dentry *dentry)
{
struct inode *inode = d_backing_inode(dentry);
int error;
if (!inode->i_op->removexattr)
return 0;
return inode->i_op->removexattr(dentry, XATTR_NAME_CAPS);
error = __vfs_removexattr(dentry, XATTR_NAME_CAPS);
if (error == -EOPNOTSUPP)
error = 0;
return error;
}
/*
@@ -394,11 +389,11 @@ int get_vfs_caps_from_disk(const struct dentry *dentry, struct cpu_vfs_cap_data
memset(cpu_caps, 0, sizeof(struct cpu_vfs_cap_data));
if (!inode || !inode->i_op->getxattr)
if (!inode)
return -ENODATA;
size = inode->i_op->getxattr((struct dentry *)dentry, inode,
XATTR_NAME_CAPS, &caps, XATTR_CAPS_SZ);
size = __vfs_getxattr((struct dentry *)dentry, inode,
XATTR_NAME_CAPS, &caps, XATTR_CAPS_SZ);
if (size == -ENODATA || size == -EOPNOTSUPP)
/* no data, that's ok */
return -ENODATA;

7
security/integrity/evm/evm_crypto.c
View File

@@ -182,8 +182,9 @@ static int evm_calc_hmac_or_hash(struct dentry *dentry,
int error;
int size;
if (!inode->i_op->getxattr)
if (!(inode->i_opflags & IOP_XATTR))
return -EOPNOTSUPP;
desc = init_desc(type);
if (IS_ERR(desc))
return PTR_ERR(desc);
@@ -253,8 +254,8 @@ int evm_update_evmxattr(struct dentry *dentry, const char *xattr_name,
rc = __vfs_setxattr_noperm(dentry, XATTR_NAME_EVM,
&xattr_data,
sizeof(xattr_data), 0);
} else if (rc == -ENODATA && inode->i_op->removexattr) {
rc = inode->i_op->removexattr(dentry, XATTR_NAME_EVM);
} else if (rc == -ENODATA && (inode->i_opflags & IOP_XATTR)) {
rc = __vfs_removexattr(dentry, XATTR_NAME_EVM);
}
return rc;
}

4
security/integrity/evm/evm_main.c
View File

@@ -78,11 +78,11 @@ static int evm_find_protected_xattrs(struct dentry *dentry)
int error;
int count = 0;
if (!inode->i_op->getxattr)
if (!(inode->i_opflags & IOP_XATTR))
return -EOPNOTSUPP;
for (xattr = evm_config_xattrnames; *xattr != NULL; xattr++) {
error = inode->i_op->getxattr(dentry, inode, *xattr, NULL, 0);
error = __vfs_getxattr(dentry, inode, *xattr, NULL, 0);
if (error < 0) {
if (error == -ENODATA)
continue;

21
security/integrity/ima/ima_appraise.c
View File

@@ -165,13 +165,13 @@ enum hash_algo ima_get_hash_algo(struct evm_ima_xattr_data *xattr_value,
int ima_read_xattr(struct dentry *dentry,
struct evm_ima_xattr_data **xattr_value)
{
struct inode *inode = d_backing_inode(dentry);
ssize_t ret;
if (!inode->i_op->getxattr)
return 0;
return vfs_getxattr_alloc(dentry, XATTR_NAME_IMA, (char **)xattr_value,
0, GFP_NOFS);
ret = vfs_getxattr_alloc(dentry, XATTR_NAME_IMA, (char **)xattr_value,
0, GFP_NOFS);
if (ret == -EOPNOTSUPP)
ret = 0;
return ret;
}
/*
@@ -195,7 +195,7 @@ int ima_appraise_measurement(enum ima_hooks func,
enum integrity_status status = INTEGRITY_UNKNOWN;
int rc = xattr_len, hash_start = 0;
if (!inode->i_op->getxattr)
if (!(inode->i_opflags & IOP_XATTR))
return INTEGRITY_UNKNOWN;
if (rc <= 0) {
@@ -322,10 +322,10 @@ void ima_inode_post_setattr(struct dentry *dentry)
{
struct inode *inode = d_backing_inode(dentry);
struct integrity_iint_cache *iint;
int must_appraise, rc;
int must_appraise;
if (!(ima_policy_flag & IMA_APPRAISE) || !S_ISREG(inode->i_mode)
|| !inode->i_op->removexattr)
|| !(inode->i_opflags & IOP_XATTR))
return;
must_appraise = ima_must_appraise(inode, MAY_ACCESS, POST_SETATTR);
@@ -338,8 +338,7 @@ void ima_inode_post_setattr(struct dentry *dentry)
iint->flags |= IMA_APPRAISE;
}
if (!must_appraise)
rc = inode->i_op->removexattr(dentry, XATTR_NAME_IMA);
return;
__vfs_removexattr(dentry, XATTR_NAME_IMA);
}
/*

19
security/selinux/hooks.c
View File

@@ -507,14 +507,14 @@ static int sb_finish_set_opts(struct super_block *sb)
the root directory. -ENODATA is ok, as this may be
the first boot of the SELinux kernel before we have
assigned xattr values to the filesystem. */
if (!root_inode->i_op->getxattr) {
if (!(root_inode->i_opflags & IOP_XATTR)) {
printk(KERN_WARNING "SELinux: (dev %s, type %s) has no "
"xattr support\n", sb->s_id, sb->s_type->name);
rc = -EOPNOTSUPP;
goto out;
}
rc = root_inode->i_op->getxattr(root, root_inode,
XATTR_NAME_SELINUX, NULL, 0);
rc = __vfs_getxattr(root, root_inode, XATTR_NAME_SELINUX, NULL, 0);
if (rc < 0 && rc != -ENODATA) {
if (rc == -EOPNOTSUPP)
printk(KERN_WARNING "SELinux: (dev %s, type "
@@ -1410,11 +1410,10 @@ static int inode_doinit_with_dentry(struct inode *inode, struct dentry *opt_dent
case SECURITY_FS_USE_NATIVE:
break;
case SECURITY_FS_USE_XATTR:
if (!inode->i_op->getxattr) {
if (!(inode->i_opflags & IOP_XATTR)) {
isec->sid = sbsec->def_sid;
break;
}
/* Need a dentry, since the xattr API requires one.
Life would be simpler if we could just pass the inode. */
if (opt_dentry) {
@@ -1445,14 +1444,12 @@ static int inode_doinit_with_dentry(struct inode *inode, struct dentry *opt_dent
goto out_unlock;
}
context[len] = '\0';
rc = inode->i_op->getxattr(dentry, inode, XATTR_NAME_SELINUX,
context, len);
rc = __vfs_getxattr(dentry, inode, XATTR_NAME_SELINUX, context, len);
if (rc == -ERANGE) {
kfree(context);
/* Need a larger buffer. Query for the right size. */
rc = inode->i_op->getxattr(dentry, inode, XATTR_NAME_SELINUX,
NULL, 0);
rc = __vfs_getxattr(dentry, inode, XATTR_NAME_SELINUX, NULL, 0);
if (rc < 0) {
dput(dentry);
goto out_unlock;
@@ -1465,9 +1462,7 @@ static int inode_doinit_with_dentry(struct inode *inode, struct dentry *opt_dent
goto out_unlock;
}
context[len] = '\0';
rc = inode->i_op->getxattr(dentry, inode,
XATTR_NAME_SELINUX,
context, len);
rc = __vfs_getxattr(dentry, inode, XATTR_NAME_SELINUX, context, len);
}
dput(dentry);
if (rc < 0) {

12
security/smack/smack_lsm.c
View File

@@ -265,14 +265,14 @@ static struct smack_known *smk_fetch(const char *name, struct inode *ip,
char *buffer;
struct smack_known *skp = NULL;
if (ip->i_op->getxattr == NULL)
if (!(ip->i_opflags & IOP_XATTR))
return ERR_PTR(-EOPNOTSUPP);
buffer = kzalloc(SMK_LONGLABEL, GFP_KERNEL);
if (buffer == NULL)
return ERR_PTR(-ENOMEM);
rc = ip->i_op->getxattr(dp, ip, name, buffer, SMK_LONGLABEL);
rc = __vfs_getxattr(dp, ip, name, buffer, SMK_LONGLABEL);
if (rc < 0)
skp = ERR_PTR(rc);
else if (rc == 0)
@@ -3520,8 +3520,8 @@ static void smack_d_instantiate(struct dentry *opt_dentry, struct inode *inode)
* It would be curious if the label of the task
* does not match that assigned.
*/
if (inode->i_op->getxattr == NULL)
break;
if (!(inode->i_opflags & IOP_XATTR))
break;
/*
* Get the dentry for xattr.
*/
@@ -3545,12 +3545,12 @@ static void smack_d_instantiate(struct dentry *opt_dentry, struct inode *inode)
*/
if (isp->smk_flags & SMK_INODE_CHANGED) {
isp->smk_flags &= ~SMK_INODE_CHANGED;
rc = inode->i_op->setxattr(dp, inode,
rc = __vfs_setxattr(dp, inode,
XATTR_NAME_SMACKTRANSMUTE,
TRANS_TRUE, TRANS_TRUE_SIZE,
0);
} else {
rc = inode->i_op->getxattr(dp, inode,
rc = __vfs_getxattr(dp, inode,
XATTR_NAME_SMACKTRANSMUTE, trattr,
TRANS_TRUE_SIZE);
if (rc >= 0 && strncmp(trattr, TRANS_TRUE,