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| author | Andreas Gruenbacher <agruenba@redhat.com> | 2016-11-10 22:18:29 +0100 |
|---|---|---|
| committer | Paul Moore <paul@paul-moore.com> | 2016-11-14 15:53:04 -0500 |
| commit | 13457d073c29da92001f6ee809075eaa8757fb96 (patch) | |
| tree | 31dedd978a6e088a8d4e14741c37063027ad4a7c | |
| parent | db978da8fa1d0819b210c137d31a339149b88875 (diff) | |
| download | linux-13457d073c29da92001f6ee809075eaa8757fb96.tar.gz linux-13457d073c29da92001f6ee809075eaa8757fb96.tar.bz2 linux-13457d073c29da92001f6ee809075eaa8757fb96.zip | |
selinux: Clean up initialization of isec->sclass
Now that isec->initialized == LABEL_INITIALIZED implies that
isec->sclass is valid, skip such inodes immediately in
inode_doinit_with_dentry.
For the remaining inodes, initialize isec->sclass at the beginning of
inode_doinit_with_dentry to simplify the code.
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Signed-off-by: Paul Moore <paul@paul-moore.com>
| -rw-r--r-- | security/selinux/hooks.c | 10 |
1 files changed, 4 insertions, 6 deletions
diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c index 32beac817bf5..2a506861a772 100644 --- a/security/selinux/hooks.c +++ b/security/selinux/hooks.c @@ -1390,12 +1390,15 @@ static int inode_doinit_with_dentry(struct inode *inode, struct dentry *opt_dent int rc = 0; if (isec->initialized == LABEL_INITIALIZED) - goto out; + return 0; mutex_lock(&isec->lock); if (isec->initialized == LABEL_INITIALIZED) goto out_unlock; + if (isec->sclass == SECCLASS_FILE) + isec->sclass = inode_mode_to_security_class(inode->i_mode); + sbsec = inode->i_sb->s_security; if (!(sbsec->flags & SE_SBINITIALIZED)) { /* Defer initialization until selinux_complete_init, @@ -1513,7 +1516,6 @@ static int inode_doinit_with_dentry(struct inode *inode, struct dentry *opt_dent isec->sid = sbsec->sid; /* Try to obtain a transition SID. */ - isec->sclass = inode_mode_to_security_class(inode->i_mode); rc = security_transition_sid(isec->task_sid, sbsec->sid, isec->sclass, NULL, &sid); if (rc) @@ -1549,7 +1551,6 @@ static int inode_doinit_with_dentry(struct inode *inode, struct dentry *opt_dent */ if (!dentry) goto out_unlock; - isec->sclass = inode_mode_to_security_class(inode->i_mode); rc = selinux_genfs_get_sid(dentry, isec->sclass, sbsec->flags, &sid); dput(dentry); @@ -1564,9 +1565,6 @@ static int inode_doinit_with_dentry(struct inode *inode, struct dentry *opt_dent out_unlock: mutex_unlock(&isec->lock); -out: - if (isec->sclass == SECCLASS_FILE) - isec->sclass = inode_mode_to_security_class(inode->i_mode); return rc; } |