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authorStephen Smalley <sds@tycho.nsa.gov>2005-09-09 13:01:44 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2005-09-09 13:57:28 -0700
commita74574aafea3a63add3251047601611111f44562 (patch)
treea8f4a809589513c666c6f5518cbe84f50ee5523e /security
parent570bc1c2e5ccdb408081e77507a385dc7ebed7fa (diff)
downloadlinux-linaro-stable-a74574aafea3a63add3251047601611111f44562.tar.gz
[PATCH] Remove security_inode_post_create/mkdir/symlink/mknod hooks
This patch removes the inode_post_create/mkdir/mknod/symlink LSM hooks as they are obsoleted by the new inode_init_security hook that enables atomic inode security labeling. If anyone sees any reason to retain these hooks, please speak now. Also, is anyone using the post_rename/link hooks; if not, those could also be removed. Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'security')
-rw-r--r--security/dummy.c28
-rw-r--r--security/selinux/hooks.c111
-rw-r--r--security/selinux/include/objsec.h1
3 files changed, 0 insertions, 140 deletions
diff --git a/security/dummy.c b/security/dummy.c
index e8a00fa80469..5083314e14b1 100644
--- a/security/dummy.c
+++ b/security/dummy.c
@@ -270,12 +270,6 @@ static int dummy_inode_create (struct inode *inode, struct dentry *dentry,
return 0;
}
-static void dummy_inode_post_create (struct inode *inode, struct dentry *dentry,
- int mask)
-{
- return;
-}
-
static int dummy_inode_link (struct dentry *old_dentry, struct inode *inode,
struct dentry *new_dentry)
{
@@ -300,24 +294,12 @@ static int dummy_inode_symlink (struct inode *inode, struct dentry *dentry,
return 0;
}
-static void dummy_inode_post_symlink (struct inode *inode,
- struct dentry *dentry, const char *name)
-{
- return;
-}
-
static int dummy_inode_mkdir (struct inode *inode, struct dentry *dentry,
int mask)
{
return 0;
}
-static void dummy_inode_post_mkdir (struct inode *inode, struct dentry *dentry,
- int mask)
-{
- return;
-}
-
static int dummy_inode_rmdir (struct inode *inode, struct dentry *dentry)
{
return 0;
@@ -329,12 +311,6 @@ static int dummy_inode_mknod (struct inode *inode, struct dentry *dentry,
return 0;
}
-static void dummy_inode_post_mknod (struct inode *inode, struct dentry *dentry,
- int mode, dev_t dev)
-{
- return;
-}
-
static int dummy_inode_rename (struct inode *old_inode,
struct dentry *old_dentry,
struct inode *new_inode,
@@ -894,17 +870,13 @@ void security_fixup_ops (struct security_operations *ops)
set_to_dummy_if_null(ops, inode_free_security);
set_to_dummy_if_null(ops, inode_init_security);
set_to_dummy_if_null(ops, inode_create);
- set_to_dummy_if_null(ops, inode_post_create);
set_to_dummy_if_null(ops, inode_link);
set_to_dummy_if_null(ops, inode_post_link);
set_to_dummy_if_null(ops, inode_unlink);
set_to_dummy_if_null(ops, inode_symlink);
- set_to_dummy_if_null(ops, inode_post_symlink);
set_to_dummy_if_null(ops, inode_mkdir);
- set_to_dummy_if_null(ops, inode_post_mkdir);
set_to_dummy_if_null(ops, inode_rmdir);
set_to_dummy_if_null(ops, inode_mknod);
- set_to_dummy_if_null(ops, inode_post_mknod);
set_to_dummy_if_null(ops, inode_rename);
set_to_dummy_if_null(ops, inode_post_rename);
set_to_dummy_if_null(ops, inode_readlink);
diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c
index 265f33d3af9b..c9c20828be79 100644
--- a/security/selinux/hooks.c
+++ b/security/selinux/hooks.c
@@ -1265,91 +1265,6 @@ static int inode_security_set_sid(struct inode *inode, u32 sid)
return 0;
}
-/* Set the security attributes on a newly created file. */
-static int post_create(struct inode *dir,
- struct dentry *dentry)
-{
-
- struct task_security_struct *tsec;
- struct inode *inode;
- struct inode_security_struct *dsec;
- struct superblock_security_struct *sbsec;
- struct inode_security_struct *isec;
- u32 newsid;
- char *context;
- unsigned int len;
- int rc;
-
- tsec = current->security;
- dsec = dir->i_security;
- sbsec = dir->i_sb->s_security;
-
- inode = dentry->d_inode;
- if (!inode) {
- /* Some file system types (e.g. NFS) may not instantiate
- a dentry for all create operations (e.g. symlink),
- so we have to check to see if the inode is non-NULL. */
- printk(KERN_WARNING "post_create: no inode, dir (dev=%s, "
- "ino=%ld)\n", dir->i_sb->s_id, dir->i_ino);
- return 0;
- }
-
- isec = inode->i_security;
-
- if (isec->security_attr_init)
- return 0;
-
- if (tsec->create_sid && sbsec->behavior != SECURITY_FS_USE_MNTPOINT) {
- newsid = tsec->create_sid;
- } else {
- rc = security_transition_sid(tsec->sid, dsec->sid,
- inode_mode_to_security_class(inode->i_mode),
- &newsid);
- if (rc) {
- printk(KERN_WARNING "post_create: "
- "security_transition_sid failed, rc=%d (dev=%s "
- "ino=%ld)\n",
- -rc, inode->i_sb->s_id, inode->i_ino);
- return rc;
- }
- }
-
- rc = inode_security_set_sid(inode, newsid);
- if (rc) {
- printk(KERN_WARNING "post_create: inode_security_set_sid "
- "failed, rc=%d (dev=%s ino=%ld)\n",
- -rc, inode->i_sb->s_id, inode->i_ino);
- return rc;
- }
-
- if (sbsec->behavior == SECURITY_FS_USE_XATTR &&
- inode->i_op->setxattr) {
- /* Use extended attributes. */
- rc = security_sid_to_context(newsid, &context, &len);
- if (rc) {
- printk(KERN_WARNING "post_create: sid_to_context "
- "failed, rc=%d (dev=%s ino=%ld)\n",
- -rc, inode->i_sb->s_id, inode->i_ino);
- return rc;
- }
- down(&inode->i_sem);
- rc = inode->i_op->setxattr(dentry,
- XATTR_NAME_SELINUX,
- context, len, 0);
- up(&inode->i_sem);
- kfree(context);
- if (rc < 0) {
- printk(KERN_WARNING "post_create: setxattr failed, "
- "rc=%d (dev=%s ino=%ld)\n",
- -rc, inode->i_sb->s_id, inode->i_ino);
- return rc;
- }
- }
-
- return 0;
-}
-
-
/* Hook functions begin here. */
static int selinux_ptrace(struct task_struct *parent, struct task_struct *child)
@@ -2076,8 +1991,6 @@ static int selinux_inode_init_security(struct inode *inode, struct inode *dir,
*len = clen;
}
- isec->security_attr_init = 1;
-
return 0;
}
@@ -2086,11 +1999,6 @@ static int selinux_inode_create(struct inode *dir, struct dentry *dentry, int ma
return may_create(dir, dentry, SECCLASS_FILE);
}
-static void selinux_inode_post_create(struct inode *dir, struct dentry *dentry, int mask)
-{
- post_create(dir, dentry);
-}
-
static int selinux_inode_link(struct dentry *old_dentry, struct inode *dir, struct dentry *new_dentry)
{
int rc;
@@ -2121,21 +2029,11 @@ static int selinux_inode_symlink(struct inode *dir, struct dentry *dentry, const
return may_create(dir, dentry, SECCLASS_LNK_FILE);
}
-static void selinux_inode_post_symlink(struct inode *dir, struct dentry *dentry, const char *name)
-{
- post_create(dir, dentry);
-}
-
static int selinux_inode_mkdir(struct inode *dir, struct dentry *dentry, int mask)
{
return may_create(dir, dentry, SECCLASS_DIR);
}
-static void selinux_inode_post_mkdir(struct inode *dir, struct dentry *dentry, int mask)
-{
- post_create(dir, dentry);
-}
-
static int selinux_inode_rmdir(struct inode *dir, struct dentry *dentry)
{
return may_link(dir, dentry, MAY_RMDIR);
@@ -2152,11 +2050,6 @@ static int selinux_inode_mknod(struct inode *dir, struct dentry *dentry, int mod
return may_create(dir, dentry, inode_mode_to_security_class(mode));
}
-static void selinux_inode_post_mknod(struct inode *dir, struct dentry *dentry, int mode, dev_t dev)
-{
- post_create(dir, dentry);
-}
-
static int selinux_inode_rename(struct inode *old_inode, struct dentry *old_dentry,
struct inode *new_inode, struct dentry *new_dentry)
{
@@ -4363,17 +4256,13 @@ static struct security_operations selinux_ops = {
.inode_free_security = selinux_inode_free_security,
.inode_init_security = selinux_inode_init_security,
.inode_create = selinux_inode_create,
- .inode_post_create = selinux_inode_post_create,
.inode_link = selinux_inode_link,
.inode_post_link = selinux_inode_post_link,
.inode_unlink = selinux_inode_unlink,
.inode_symlink = selinux_inode_symlink,
- .inode_post_symlink = selinux_inode_post_symlink,
.inode_mkdir = selinux_inode_mkdir,
- .inode_post_mkdir = selinux_inode_post_mkdir,
.inode_rmdir = selinux_inode_rmdir,
.inode_mknod = selinux_inode_mknod,
- .inode_post_mknod = selinux_inode_post_mknod,
.inode_rename = selinux_inode_rename,
.inode_post_rename = selinux_inode_post_rename,
.inode_readlink = selinux_inode_readlink,
diff --git a/security/selinux/include/objsec.h b/security/selinux/include/objsec.h
index c515bc0b58a1..887937c8134a 100644
--- a/security/selinux/include/objsec.h
+++ b/security/selinux/include/objsec.h
@@ -46,7 +46,6 @@ struct inode_security_struct {
unsigned char initialized; /* initialization flag */
struct semaphore sem;
unsigned char inherit; /* inherit SID from parent entry */
- unsigned char security_attr_init; /* security attributes init flag */
};
struct file_security_struct {