Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

[linux.git] / fs / exec.c

diff --git a/fs/exec.c b/fs/exec.c
index 4cc94534ed5b290f6462563dbb0030d78e05995b..476f3ebf437ef40ddd7432200080825b7e9e992c 100644 (file)
--- a/fs/exec.c
+++ b/fs/exec.c
@@ -26,6 +26,7 @@
 #include <linux/file.h>
 #include <linux/fdtable.h>
 #include <linux/mm.h>
+#include <linux/vmacache.h>
 #include <linux/stat.h>
 #include <linux/fcntl.h>
 #include <linux/swap.h>
@@ -97,6 +98,7 @@ static inline void put_binfmt(struct linux_binfmt * fmt)
        module_put(fmt->module);
 }
 
+#ifdef CONFIG_USELIB
 /*
  * Note that a shared library must be both readable and executable due to
  * security reasons.
@@ -156,6 +158,7 @@ exit:
 out:
        return error;
 }
+#endif /* #ifdef CONFIG_USELIB */
 
 #ifdef CONFIG_MMU
 /*
@@ -820,7 +823,7 @@ EXPORT_SYMBOL(read_code);
 static int exec_mmap(struct mm_struct *mm)
 {
        struct task_struct *tsk;
-       struct mm_struct * old_mm, *active_mm;
+       struct mm_struct *old_mm, *active_mm;
 
        /* Notify parent that we're no longer interested in the old VM */
        tsk = current;
@@ -846,6 +849,8 @@ static int exec_mmap(struct mm_struct *mm)
        tsk->mm = mm;
        tsk->active_mm = mm;
        activate_mm(active_mm, mm);
+       tsk->mm->vmacache_seqnum = 0;
+       vmacache_flush(tsk);
        task_unlock(tsk);
        if (old_mm) {
                up_read(&old_mm->mmap_sem);
@@ -1041,7 +1046,7 @@ EXPORT_SYMBOL_GPL(get_task_comm);
  * so that a new one can be started
  */
 
-void set_task_comm(struct task_struct *tsk, char *buf)
+void set_task_comm(struct task_struct *tsk, const char *buf)
 {
        task_lock(tsk);
        trace_task_rename(tsk, buf);
@@ -1050,21 +1055,6 @@ void set_task_comm(struct task_struct *tsk, char *buf)
        perf_event_comm(tsk);
 }
 
-static void filename_to_taskname(char *tcomm, const char *fn, unsigned int len)
-{
-       int i, ch;
-
-       /* Copies the binary name from after last slash */
-       for (i = 0; (ch = *(fn++)) != '\0';) {
-               if (ch == '/')
-                       i = 0; /* overwrite what we wrote */
-               else
-                       if (i < len - 1)
-                               tcomm[i++] = ch;
-       }
-       tcomm[i] = '\0';
-}
-
 int flush_old_exec(struct linux_binprm * bprm)
 {
        int retval;
@@ -1078,8 +1068,6 @@ int flush_old_exec(struct linux_binprm * bprm)
                goto out;
 
        set_mm_exe_file(bprm->mm, bprm->file);
-
-       filename_to_taskname(bprm->tcomm, bprm->filename, sizeof(bprm->tcomm));
        /*
         * Release all of the old mmap stuff
         */
@@ -1122,7 +1110,7 @@ void setup_new_exec(struct linux_binprm * bprm)
        else
                set_dumpable(current->mm, suid_dumpable);
 
-       set_task_comm(current, bprm->tcomm);
+       set_task_comm(current, kbasename(bprm->filename));
 
        /* Set the new mm task size. We have to do that late because it may
         * depend on TIF_32BIT which is only updated in flush_thread() on
@@ -1619,9 +1607,9 @@ SYSCALL_DEFINE3(execve,
        return do_execve(getname(filename), argv, envp);
 }
 #ifdef CONFIG_COMPAT
-asmlinkage long compat_sys_execve(const char __user * filename,
-       const compat_uptr_t __user * argv,
-       const compat_uptr_t __user * envp)
+COMPAT_SYSCALL_DEFINE3(execve, const char __user *, filename,
+       const compat_uptr_t __user *, argv,
+       const compat_uptr_t __user *, envp)
 {
        return compat_do_execve(getname(filename), argv, envp);
 }