[PATCH] dup fd error fix

Set errorp in dup_fd, it will be used in sys_unshare also.

Signed-off-by: Prasanna Meda <mlp@google.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

diff --git a/kernel/fork.c b/kernel/fork.c
index 195958a..49adc0e 100644 (file)
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -625,6 +625,7 @@ out:
 /*
  * Allocate a new files structure and copy contents from the
  * passed in files structure.
+ * errorp will be valid only when the returned files_struct is NULL.
  */
 static struct files_struct *dup_fd(struct files_struct *oldf, int *errorp)
 {
@@ -633,6 +634,7 @@ static struct files_struct *dup_fd(struct files_struct *oldf, int *errorp)
        int open_files, size, i, expand;
        struct fdtable *old_fdt, *new_fdt;
 
+       *errorp = -ENOMEM;
        newf = alloc_files();
        if (!newf)
                goto out;
@@ -746,7 +748,6 @@ static int copy_files(unsigned long clone_flags, struct task_struct * tsk)
         * break this.
         */
        tsk->files = NULL;
-       error = -ENOMEM;
        newf = dup_fd(oldf, &error);
        if (!newf)
                goto out;