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Diffstat (limited to 'fs/proc/base.c')
-rw-r--r--fs/proc/base.c27
1 files changed, 25 insertions, 2 deletions
diff --git a/fs/proc/base.c b/fs/proc/base.c
index 1b6c84cbdb73..acd1960c28a2 100644
--- a/fs/proc/base.c
+++ b/fs/proc/base.c
@@ -1089,7 +1089,8 @@ static ssize_t proc_loginuid_read(struct file * file, char __user * buf,
if (!task)
return -ESRCH;
length = scnprintf(tmpbuf, TMPBUFLEN, "%u",
- audit_get_loginuid(task));
+ from_kuid(file->f_cred->user_ns,
+ audit_get_loginuid(task)));
put_task_struct(task);
return simple_read_from_buffer(buf, count, ppos, tmpbuf, length);
}
@@ -1101,6 +1102,7 @@ static ssize_t proc_loginuid_write(struct file * file, const char __user * buf,
char *page, *tmp;
ssize_t length;
uid_t loginuid;
+ kuid_t kloginuid;
rcu_read_lock();
if (current != pid_task(proc_pid(inode), PIDTYPE_PID)) {
@@ -1130,7 +1132,13 @@ static ssize_t proc_loginuid_write(struct file * file, const char __user * buf,
goto out_free_page;
}
- length = audit_set_loginuid(loginuid);
+ kloginuid = make_kuid(file->f_cred->user_ns, loginuid);
+ if (!uid_valid(kloginuid)) {
+ length = -EINVAL;
+ goto out_free_page;
+ }
+
+ length = audit_set_loginuid(kloginuid);
if (likely(length == 0))
length = count;
@@ -2983,6 +2991,11 @@ static int proc_gid_map_open(struct inode *inode, struct file *file)
return proc_id_map_open(inode, file, &proc_gid_seq_operations);
}
+static int proc_projid_map_open(struct inode *inode, struct file *file)
+{
+ return proc_id_map_open(inode, file, &proc_projid_seq_operations);
+}
+
static const struct file_operations proc_uid_map_operations = {
.open = proc_uid_map_open,
.write = proc_uid_map_write,
@@ -2998,6 +3011,14 @@ static const struct file_operations proc_gid_map_operations = {
.llseek = seq_lseek,
.release = proc_id_map_release,
};
+
+static const struct file_operations proc_projid_map_operations = {
+ .open = proc_projid_map_open,
+ .write = proc_projid_map_write,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = proc_id_map_release,
+};
#endif /* CONFIG_USER_NS */
static int proc_pid_personality(struct seq_file *m, struct pid_namespace *ns,
@@ -3105,6 +3126,7 @@ static const struct pid_entry tgid_base_stuff[] = {
#ifdef CONFIG_USER_NS
REG("uid_map", S_IRUGO|S_IWUSR, proc_uid_map_operations),
REG("gid_map", S_IRUGO|S_IWUSR, proc_gid_map_operations),
+ REG("projid_map", S_IRUGO|S_IWUSR, proc_projid_map_operations),
#endif
};
@@ -3468,6 +3490,7 @@ static const struct pid_entry tid_base_stuff[] = {
#ifdef CONFIG_USER_NS
REG("uid_map", S_IRUGO|S_IWUSR, proc_uid_map_operations),
REG("gid_map", S_IRUGO|S_IWUSR, proc_gid_map_operations),
+ REG("projid_map", S_IRUGO|S_IWUSR, proc_projid_map_operations),
#endif
};