mirror of
https://github.com/sheumann/hush.git
synced 2024-08-17 15:29:35 +00:00
35 lines
966 B
Diff
35 lines
966 B
Diff
This patch makes /proc/self/exe executable even if proc
|
|
is not mounted. It is especially useful on NOMMU arches.
|
|
|
|
diff -urp ../linux-2.6.30.org/fs/exec.c linux-2.6.30/fs/exec.c
|
|
--- ../linux-2.6.30.org/fs/exec.c 2009-06-10 05:05:27.000000000 +0200
|
|
+++ linux-2.6.30/fs/exec.c 2009-06-25 00:20:13.000000000 +0200
|
|
@@ -652,9 +652,25 @@ struct file *open_exec(const char *name)
|
|
file = do_filp_open(AT_FDCWD, name,
|
|
O_LARGEFILE | O_RDONLY | FMODE_EXEC, 0,
|
|
MAY_EXEC | MAY_OPEN);
|
|
- if (IS_ERR(file))
|
|
- goto out;
|
|
+ if (IS_ERR(file)) {
|
|
+ if ((PTR_ERR(file) == -ENOENT || PTR_ERR(file) == -EACCES)
|
|
+ && strcmp(name, "/proc/self/exe") == 0
|
|
+ ) {
|
|
+ struct file *sv = file;
|
|
+ struct mm_struct *mm;
|
|
|
|
+ mm = get_task_mm(current);
|
|
+ if (!mm)
|
|
+ goto out;
|
|
+ file = get_mm_exe_file(mm);
|
|
+ mmput(mm);
|
|
+ if (file)
|
|
+ goto ok;
|
|
+ file = sv;
|
|
+ }
|
|
+ goto out;
|
|
+ }
|
|
+ok:
|
|
err = -EACCES;
|
|
if (!S_ISREG(file->f_path.dentry->d_inode->i_mode))
|
|
goto exit;
|