diff options
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/proc/base.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/fs/proc/base.c b/fs/proc/base.c index 2166f24af37e..d2428d20d5a9 100644 --- a/fs/proc/base.c +++ b/fs/proc/base.c @@ -2384,6 +2384,11 @@ out: } #ifdef CONFIG_SECURITY +static int proc_pid_attr_open(struct inode *inode, struct file *file) +{ + return __mem_open(inode, file, PTRACE_MODE_READ_FSCREDS); +} + static ssize_t proc_pid_attr_read(struct file * file, char __user * buf, size_t count, loff_t *ppos) { @@ -2414,7 +2419,7 @@ static ssize_t proc_pid_attr_write(struct file * file, const char __user * buf, struct task_struct *task = get_proc_task(inode); /* A task may only write when it was the opener. */ - if (file->f_cred != current_real_cred()) + if (file->private_data != current->mm) return -EPERM; length = -ESRCH; @@ -2455,9 +2460,11 @@ out_no_task: } static const struct file_operations proc_pid_attr_operations = { + .open = proc_pid_attr_open, .read = proc_pid_attr_read, .write = proc_pid_attr_write, .llseek = generic_file_llseek, + .release = mem_release, }; static const struct pid_entry attr_dir_stuff[] = { |