diff options
Diffstat (limited to 'security/selinux')
| -rw-r--r-- | security/selinux/hooks.c | 66 | ||||
| -rw-r--r-- | security/selinux/nlmsgtab.c | 3 |
2 files changed, 40 insertions, 29 deletions
diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c index f85597a4d73..f71de5a64d0 100644 --- a/security/selinux/hooks.c +++ b/security/selinux/hooks.c @@ -1687,15 +1687,39 @@ static inline u32 file_mask_to_av(int mode, int mask) return av; } +/* Convert a Linux file to an access vector. */ +static inline u32 file_to_av(struct file *file) +{ + u32 av = 0; + + if (file->f_mode & FMODE_READ) + av |= FILE__READ; + if (file->f_mode & FMODE_WRITE) { + if (file->f_flags & O_APPEND) + av |= FILE__APPEND; + else + av |= FILE__WRITE; + } + if (!av) { + /* + * Special file opened with flags 3 for ioctl-only use. + */ + av = FILE__IOCTL; + } + + return av; +} + /* - * Convert a file mask to an access vector and include the correct open + * Convert a file to an access vector and include the correct open * open permission. */ -static inline u32 open_file_mask_to_av(int mode, int mask) +static inline u32 open_file_to_av(struct file *file) { - u32 av = file_mask_to_av(mode, mask); + u32 av = file_to_av(file); if (selinux_policycap_openperm) { + mode_t mode = file->f_path.dentry->d_inode->i_mode; /* * lnk files and socks do not really have an 'open' */ @@ -1711,34 +1735,11 @@ static inline u32 open_file_mask_to_av(int mode, int mask) av |= DIR__OPEN; else printk(KERN_ERR "SELinux: WARNING: inside %s with " - "unknown mode:%x\n", __func__, mode); + "unknown mode:%o\n", __func__, mode); } return av; } -/* Convert a Linux file to an access vector. */ -static inline u32 file_to_av(struct file *file) -{ - u32 av = 0; - - if (file->f_mode & FMODE_READ) - av |= FILE__READ; - if (file->f_mode & FMODE_WRITE) { - if (file->f_flags & O_APPEND) - av |= FILE__APPEND; - else - av |= FILE__WRITE; - } - if (!av) { - /* - * Special file opened with flags 3 for ioctl-only use. - */ - av = FILE__IOCTL; - } - - return av; -} - /* Hook functions begin here. */ static int selinux_ptrace_may_access(struct task_struct *child, @@ -2269,7 +2270,9 @@ static void selinux_bprm_post_apply_creds(struct linux_binprm *bprm) struct rlimit *rlim, *initrlim; struct itimerval itimer; struct bprm_security_struct *bsec; + struct sighand_struct *psig; int rc, i; + unsigned long flags; tsec = current->security; bsec = bprm->security; @@ -2330,7 +2333,12 @@ static void selinux_bprm_post_apply_creds(struct linux_binprm *bprm) /* Wake up the parent if it is waiting so that it can recheck wait permission to the new task SID. */ + read_lock_irq(&tasklist_lock); + psig = current->parent->sighand; + spin_lock_irqsave(&psig->siglock, flags); wake_up_interruptible(¤t->parent->signal->wait_chldexit); + spin_unlock_irqrestore(&psig->siglock, flags); + read_unlock_irq(&tasklist_lock); } /* superblock security operations */ @@ -2650,7 +2658,7 @@ static int selinux_inode_permission(struct inode *inode, int mask) } return inode_has_perm(current, inode, - open_file_mask_to_av(inode->i_mode, mask), NULL); + file_mask_to_av(inode->i_mode, mask), NULL); } static int selinux_inode_setattr(struct dentry *dentry, struct iattr *iattr) @@ -3166,7 +3174,7 @@ static int selinux_dentry_open(struct file *file) * new inode label or new policy. * This check is not redundant - do not remove. */ - return inode_has_perm(current, inode, file_to_av(file), NULL); + return inode_has_perm(current, inode, open_file_to_av(file), NULL); } /* task security operations */ diff --git a/security/selinux/nlmsgtab.c b/security/selinux/nlmsgtab.c index ff59c0c4804..4ed7bab89c5 100644 --- a/security/selinux/nlmsgtab.c +++ b/security/selinux/nlmsgtab.c @@ -63,6 +63,9 @@ static struct nlmsg_perm nlmsg_route_perms[] = { RTM_GETANYCAST, NETLINK_ROUTE_SOCKET__NLMSG_READ }, { RTM_GETNEIGHTBL, NETLINK_ROUTE_SOCKET__NLMSG_READ }, { RTM_SETNEIGHTBL, NETLINK_ROUTE_SOCKET__NLMSG_WRITE }, + { RTM_NEWADDRLABEL, NETLINK_ROUTE_SOCKET__NLMSG_WRITE }, + { RTM_DELADDRLABEL, NETLINK_ROUTE_SOCKET__NLMSG_WRITE }, + { RTM_GETADDRLABEL, NETLINK_ROUTE_SOCKET__NLMSG_READ }, }; static struct nlmsg_perm nlmsg_firewall_perms[] = |