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Diffstat (limited to 'fs/proc')
-rw-r--r--fs/proc/base.c13
-rw-r--r--fs/proc/namespaces.c9
-rw-r--r--fs/proc/proc_sysctl.c3
-rw-r--r--fs/proc/root.c11
4 files changed, 18 insertions, 18 deletions
diff --git a/fs/proc/base.c b/fs/proc/base.c
index 14def991d9dd..fc5bc2767692 100644
--- a/fs/proc/base.c
+++ b/fs/proc/base.c
@@ -2169,11 +2169,7 @@ static const struct file_operations proc_fd_operations = {
*/
static int proc_fd_permission(struct inode *inode, int mask, unsigned int flags)
{
- int rv;
-
- if (flags & IPERM_FLAG_RCU)
- return -ECHILD;
- rv = generic_permission(inode, mask, flags, NULL);
+ int rv = generic_permission(inode, mask, flags, NULL);
if (rv == 0)
return 0;
if (task_pid(current) == proc_pid(inode))
@@ -2712,6 +2708,9 @@ static int do_io_accounting(struct task_struct *task, char *buffer, int whole)
struct task_io_accounting acct = task->ioac;
unsigned long flags;
+ if (!ptrace_may_access(task, PTRACE_MODE_READ))
+ return -EACCES;
+
if (whole && lock_task_sighand(task, &flags)) {
struct task_struct *t = task;
@@ -2843,7 +2842,7 @@ static const struct pid_entry tgid_base_stuff[] = {
REG("coredump_filter", S_IRUGO|S_IWUSR, proc_coredump_filter_operations),
#endif
#ifdef CONFIG_TASK_IO_ACCOUNTING
- INF("io", S_IRUGO, proc_tgid_io_accounting),
+ INF("io", S_IRUSR, proc_tgid_io_accounting),
#endif
#ifdef CONFIG_HARDWALL
INF("hardwall", S_IRUGO, proc_pid_hardwall),
@@ -3185,7 +3184,7 @@ static const struct pid_entry tid_base_stuff[] = {
REG("make-it-fail", S_IRUGO|S_IWUSR, proc_fault_inject_operations),
#endif
#ifdef CONFIG_TASK_IO_ACCOUNTING
- INF("io", S_IRUGO, proc_tid_io_accounting),
+ INF("io", S_IRUSR, proc_tid_io_accounting),
#endif
#ifdef CONFIG_HARDWALL
INF("hardwall", S_IRUGO, proc_pid_hardwall),
diff --git a/fs/proc/namespaces.c b/fs/proc/namespaces.c
index 781dec5bd682..be177f702acb 100644
--- a/fs/proc/namespaces.c
+++ b/fs/proc/namespaces.c
@@ -38,18 +38,21 @@ static struct dentry *proc_ns_instantiate(struct inode *dir,
struct inode *inode;
struct proc_inode *ei;
struct dentry *error = ERR_PTR(-ENOENT);
+ void *ns;
inode = proc_pid_make_inode(dir->i_sb, task);
if (!inode)
goto out;
+ ns = ns_ops->get(task);
+ if (!ns)
+ goto out_iput;
+
ei = PROC_I(inode);
inode->i_mode = S_IFREG|S_IRUSR;
inode->i_fop = &ns_file_operations;
ei->ns_ops = ns_ops;
- ei->ns = ns_ops->get(task);
- if (!ei->ns)
- goto out_iput;
+ ei->ns = ns;
dentry->d_op = &pid_dentry_operations;
d_add(dentry, inode);
diff --git a/fs/proc/proc_sysctl.c b/fs/proc/proc_sysctl.c
index f50133c11c24..d167de365a8d 100644
--- a/fs/proc/proc_sysctl.c
+++ b/fs/proc/proc_sysctl.c
@@ -304,9 +304,6 @@ static int proc_sys_permission(struct inode *inode, int mask,unsigned int flags)
struct ctl_table *table;
int error;
- if (flags & IPERM_FLAG_RCU)
- return -ECHILD;
-
/* Executable files are not allowed under /proc/sys/ */
if ((mask & MAY_EXEC) && S_ISREG(inode->i_mode))
return -EACCES;
diff --git a/fs/proc/root.c b/fs/proc/root.c
index a9000e9cfee5..d6c3b416529b 100644
--- a/fs/proc/root.c
+++ b/fs/proc/root.c
@@ -28,11 +28,12 @@ static int proc_test_super(struct super_block *sb, void *data)
static int proc_set_super(struct super_block *sb, void *data)
{
- struct pid_namespace *ns;
-
- ns = (struct pid_namespace *)data;
- sb->s_fs_info = get_pid_ns(ns);
- return set_anon_super(sb, NULL);
+ int err = set_anon_super(sb, NULL);
+ if (!err) {
+ struct pid_namespace *ns = (struct pid_namespace *)data;
+ sb->s_fs_info = get_pid_ns(ns);
+ }
+ return err;
}
static struct dentry *proc_mount(struct file_system_type *fs_type,