int len;
char *name;
mode_t mode;
- struct inode_operations *iop;
+ const struct inode_operations *iop;
const struct file_operations *fop;
union proc_op op;
};
return error;
}
-static struct inode_operations proc_def_inode_operations = {
+static const struct inode_operations proc_def_inode_operations = {
.setattr = proc_setattr,
};
#ifndef mem_write
/* This is a security hazard */
-static ssize_t mem_write(struct file * file, const char * buf,
+static ssize_t mem_write(struct file * file, const char __user *buf,
size_t count, loff_t *ppos)
{
int copied;
.write = oom_adjust_write,
};
+static ssize_t clear_refs_write(struct file *file, const char __user *buf,
+ size_t count, loff_t *ppos)
+{
+ struct task_struct *task;
+ char buffer[PROC_NUMBUF], *end;
+ struct mm_struct *mm;
+
+ memset(buffer, 0, sizeof(buffer));
+ if (count > sizeof(buffer) - 1)
+ count = sizeof(buffer) - 1;
+ if (copy_from_user(buffer, buf, count))
+ return -EFAULT;
+ if (!simple_strtol(buffer, &end, 0))
+ return -EINVAL;
+ if (*end == '\n')
+ end++;
+ task = get_proc_task(file->f_path.dentry->d_inode);
+ if (!task)
+ return -ESRCH;
+ mm = get_task_mm(task);
+ if (mm) {
+ clear_refs_smap(mm);
+ mmput(mm);
+ }
+ put_task_struct(task);
+ if (end - buffer == 0)
+ return -EIO;
+ return end - buffer;
+}
+
+static struct file_operations proc_clear_refs_operations = {
+ .write = clear_refs_write,
+};
+
#ifdef CONFIG_AUDITSYSCALL
#define TMPBUFLEN 21
static ssize_t proc_loginuid_read(struct file * file, char __user * buf,
return error;
}
-static struct inode_operations proc_pid_link_inode_operations = {
+static const struct inode_operations proc_pid_link_inode_operations = {
.readlink = proc_pid_readlink,
.follow_link = proc_pid_follow_link,
.setattr = proc_setattr,
/*
* proc directories can do almost nothing..
*/
-static struct inode_operations proc_fd_inode_operations = {
+static const struct inode_operations proc_fd_inode_operations = {
.lookup = proc_lookupfd,
.setattr = proc_setattr,
};
size_t count, loff_t *ppos)
{
struct inode * inode = file->f_path.dentry->d_inode;
- unsigned long page;
+ char *p = NULL;
ssize_t length;
struct task_struct *task = get_proc_task(inode);
- length = -ESRCH;
if (!task)
- goto out_no_task;
-
- if (count > PAGE_SIZE)
- count = PAGE_SIZE;
- length = -ENOMEM;
- if (!(page = __get_free_page(GFP_KERNEL)))
- goto out;
+ return -ESRCH;
length = security_getprocattr(task,
(char*)file->f_path.dentry->d_name.name,
- (void*)page, count);
- if (length >= 0)
- length = simple_read_from_buffer(buf, count, ppos, (char *)page, length);
- free_page(page);
-out:
+ &p);
put_task_struct(task);
-out_no_task:
+ if (length > 0)
+ length = simple_read_from_buffer(buf, count, ppos, p, length);
+ kfree(p);
return length;
}
attr_dir_stuff, ARRAY_SIZE(attr_dir_stuff));
}
-static struct inode_operations proc_attr_dir_inode_operations = {
+static const struct inode_operations proc_attr_dir_inode_operations = {
.lookup = proc_attr_dir_lookup,
.getattr = pid_getattr,
.setattr = proc_setattr,
return ERR_PTR(vfs_follow_link(nd,tmp));
}
-static struct inode_operations proc_self_inode_operations = {
+static const struct inode_operations proc_self_inode_operations = {
.readlink = proc_self_readlink,
.follow_link = proc_self_follow_link,
};
* Thread groups
*/
static const struct file_operations proc_task_operations;
-static struct inode_operations proc_task_inode_operations;
+static const struct inode_operations proc_task_inode_operations;
static struct pid_entry tgid_base_stuff[] = {
DIR("task", S_IRUGO|S_IXUGO, task),
REG("mounts", S_IRUGO, mounts),
REG("mountstats", S_IRUSR, mountstats),
#ifdef CONFIG_MMU
+ REG("clear_refs", S_IWUSR, clear_refs),
REG("smaps", S_IRUGO, smaps),
#endif
#ifdef CONFIG_SECURITY
tgid_base_stuff, ARRAY_SIZE(tgid_base_stuff));
}
-static struct inode_operations proc_tgid_base_inode_operations = {
+static const struct inode_operations proc_tgid_base_inode_operations = {
.lookup = proc_tgid_base_lookup,
.getattr = pid_getattr,
.setattr = proc_setattr,
LNK("exe", exe),
REG("mounts", S_IRUGO, mounts),
#ifdef CONFIG_MMU
+ REG("clear_refs", S_IWUSR, clear_refs),
REG("smaps", S_IRUGO, smaps),
#endif
#ifdef CONFIG_SECURITY
.readdir = proc_tid_base_readdir,
};
-static struct inode_operations proc_tid_base_inode_operations = {
+static const struct inode_operations proc_tid_base_inode_operations = {
.lookup = proc_tid_base_lookup,
.getattr = pid_getattr,
.setattr = proc_setattr,
return 0;
}
-static struct inode_operations proc_task_inode_operations = {
+static const struct inode_operations proc_task_inode_operations = {
.lookup = proc_task_lookup,
.getattr = proc_task_getattr,
.setattr = proc_setattr,