nfsd: move some of fh_compose into helper functions

[safe/jmp/linux-2.6] / fs / exec.c

diff --git a/fs/exec.c b/fs/exec.c
index 895823d..4a8849e 100644 (file)
--- a/fs/exec.c
+++ b/fs/exec.c
@@ -33,6 +33,7 @@
 #include <linux/string.h>
 #include <linux/init.h>
 #include <linux/pagemap.h>
+#include <linux/perf_counter.h>
 #include <linux/highmem.h>
 #include <linux/spinlock.h>
 #include <linux/key.h>
@@ -922,6 +923,7 @@ void set_task_comm(struct task_struct *tsk, char *buf)
        task_lock(tsk);
        strlcpy(tsk->comm, buf, sizeof(tsk->comm));
        task_unlock(tsk);
+       perf_counter_comm(tsk);
 }
 
 int flush_old_exec(struct linux_binprm * bprm)
@@ -990,6 +992,13 @@ int flush_old_exec(struct linux_binprm * bprm)
 
        current->personality &= ~bprm->per_clear;
 
+       /*
+        * Flush performance counters when crossing a
+        * security domain:
+        */
+       if (!get_dumpable(current->mm))
+               perf_counter_exit_task(current);
+
        /* An exec changes our domain. We are no longer part of the thread
           group */
 
@@ -1016,7 +1025,7 @@ void install_exec_creds(struct linux_binprm *bprm)
        commit_creds(bprm->cred);
        bprm->cred = NULL;
 
-       /* cred_exec_mutex must be held at least to this point to prevent
+       /* cred_guard_mutex must be held at least to this point to prevent
         * ptrace_attach() from altering our determination of the task's
         * credentials; any time after this it may be unlocked */
 
@@ -1026,7 +1035,7 @@ EXPORT_SYMBOL(install_exec_creds);
 
 /*
  * determine how safe it is to execute the proposed program
- * - the caller must hold current->cred_exec_mutex to protect against
+ * - the caller must hold current->cred_guard_mutex to protect against
  *   PTRACE_ATTACH
  */
 int check_unsafe_exec(struct linux_binprm *bprm)
@@ -1268,8 +1277,8 @@ int do_execve(char * filename,
        if (!bprm)
                goto out_files;
 
-       retval = mutex_lock_interruptible(&current->cred_exec_mutex);
-       if (retval < 0)
+       retval = -ERESTARTNOINTR;
+       if (mutex_lock_interruptible(&current->cred_guard_mutex))
                goto out_free;
        current->in_execve = 1;
 
@@ -1331,7 +1340,7 @@ int do_execve(char * filename,
        /* execve succeeded */
        current->fs->in_exec = 0;
        current->in_execve = 0;
-       mutex_unlock(&current->cred_exec_mutex);
+       mutex_unlock(&current->cred_guard_mutex);
        acct_update_integrals(current);
        free_bprm(bprm);
        if (displaced)
@@ -1354,7 +1363,7 @@ out_unmark:
 
 out_unlock:
        current->in_execve = 0;
-       mutex_unlock(&current->cred_exec_mutex);
+       mutex_unlock(&current->cred_guard_mutex);
 
 out_free:
        free_bprm(bprm);