OMAP: dmtimer: enable all timers to be wakeup events

[linux-2.6-omap-h63xx.git] / fs / exec.c

diff --git a/fs/exec.c b/fs/exec.c
index 929b58004b7eace02d784a2a4fbba17fd02b0533..c5128fbc9165235832a3851b663eb23a2ab8935d 100644 (file)
--- a/fs/exec.c
+++ b/fs/exec.c
@@ -45,6 +45,7 @@
 #include <linux/proc_fs.h>
 #include <linux/mount.h>
 #include <linux/security.h>
+#include <linux/ima.h>
 #include <linux/syscalls.h>
 #include <linux/tsacct_kern.h>
 #include <linux/cn_proc.h>
@@ -127,6 +128,9 @@ SYSCALL_DEFINE1(uselib, const char __user *, library)
                                 MAY_READ | MAY_EXEC | MAY_OPEN);
        if (error)
                goto exit;
+       error = ima_path_check(&nd.path, MAY_READ | MAY_EXEC | MAY_OPEN);
+       if (error)
+               goto exit;
 
        file = nameidata_to_filp(&nd, O_RDONLY|O_LARGEFILE);
        error = PTR_ERR(file);
@@ -672,6 +676,9 @@ struct file *open_exec(const char *name)
                goto out_path_put;
 
        err = inode_permission(nd.path.dentry->d_inode, MAY_EXEC | MAY_OPEN);
+       if (err)
+               goto out_path_put;
+       err = ima_path_check(&nd.path, MAY_EXEC | MAY_OPEN);
        if (err)
                goto out_path_put;
 
@@ -1049,28 +1056,24 @@ EXPORT_SYMBOL(install_exec_creds);
  * - the caller must hold current->cred_exec_mutex to protect against
  *   PTRACE_ATTACH
  */
-void check_unsafe_exec(struct linux_binprm *bprm, struct files_struct *files)
+void check_unsafe_exec(struct linux_binprm *bprm)
 {
        struct task_struct *p = current, *t;
        unsigned long flags;
-       unsigned n_fs, n_files, n_sighand;
+       unsigned n_fs, n_sighand;
 
        bprm->unsafe = tracehook_unsafe_exec(p);
 
        n_fs = 1;
-       n_files = 1;
        n_sighand = 1;
        lock_task_sighand(p, &flags);
        for (t = next_thread(p); t != p; t = next_thread(t)) {
                if (t->fs == p->fs)
                        n_fs++;
-               if (t->files == files)
-                       n_files++;
                n_sighand++;
        }
 
        if (atomic_read(&p->fs->count) > n_fs ||
-           atomic_read(&p->files->count) > n_files ||
            atomic_read(&p->sighand->count) > n_sighand)
                bprm->unsafe |= LSM_UNSAFE_SHARE;
 
@@ -1182,6 +1185,9 @@ int search_binary_handler(struct linux_binprm *bprm,struct pt_regs *regs)
        struct linux_binfmt *fmt;
 
        retval = security_bprm_check(bprm);
+       if (retval)
+               return retval;
+       retval = ima_bprm_check(bprm);
        if (retval)
                return retval;
 
@@ -1284,12 +1290,13 @@ int do_execve(char * filename,
        retval = mutex_lock_interruptible(&current->cred_exec_mutex);
        if (retval < 0)
                goto out_free;
+       current->in_execve = 1;
 
        retval = -ENOMEM;
        bprm->cred = prepare_exec_creds();
        if (!bprm->cred)
                goto out_unlock;
-       check_unsafe_exec(bprm, displaced);
+       check_unsafe_exec(bprm);
 
        file = open_exec(filename);
        retval = PTR_ERR(file);
@@ -1337,6 +1344,7 @@ int do_execve(char * filename,
                goto out;
 
        /* execve succeeded */
+       current->in_execve = 0;
        mutex_unlock(&current->cred_exec_mutex);
        acct_update_integrals(current);
        free_bprm(bprm);
@@ -1355,6 +1363,7 @@ out_file:
        }
 
 out_unlock:
+       current->in_execve = 0;
        mutex_unlock(&current->cred_exec_mutex);
 
 out_free: