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-rw-r--r--kernel/user_namespace.c33
1 files changed, 20 insertions, 13 deletions
diff --git a/kernel/user_namespace.c b/kernel/user_namespace.c
index bf71b4b2d632..fcc02560fd6b 100644
--- a/kernel/user_namespace.c
+++ b/kernel/user_namespace.c
@@ -286,7 +286,7 @@ EXPORT_SYMBOL(from_kuid_munged);
/**
* make_kgid - Map a user-namespace gid pair into a kgid.
* @ns: User namespace that the gid is in
- * @uid: group identifier
+ * @gid: group identifier
*
* Maps a user-namespace gid pair into a kernel internal kgid,
* and returns that kgid.
@@ -482,7 +482,8 @@ static int projid_m_show(struct seq_file *seq, void *v)
return 0;
}
-static void *m_start(struct seq_file *seq, loff_t *ppos, struct uid_gid_map *map)
+static void *m_start(struct seq_file *seq, loff_t *ppos,
+ struct uid_gid_map *map)
{
struct uid_gid_extent *extent = NULL;
loff_t pos = *ppos;
@@ -546,7 +547,8 @@ struct seq_operations proc_projid_seq_operations = {
.show = projid_m_show,
};
-static bool mappings_overlap(struct uid_gid_map *new_map, struct uid_gid_extent *extent)
+static bool mappings_overlap(struct uid_gid_map *new_map,
+ struct uid_gid_extent *extent)
{
u32 upper_first, lower_first, upper_last, lower_last;
unsigned idx;
@@ -653,7 +655,7 @@ static ssize_t map_write(struct file *file, const char __user *buf,
ret = -EINVAL;
pos = kbuf;
new_map.nr_extents = 0;
- for (;pos; pos = next_line) {
+ for (; pos; pos = next_line) {
extent = &new_map.extent[new_map.nr_extents];
/* Find the end of line and ensure I don't look past it */
@@ -687,13 +689,16 @@ static ssize_t map_write(struct file *file, const char __user *buf,
/* Verify we have been given valid starting values */
if ((extent->first == (u32) -1) ||
- (extent->lower_first == (u32) -1 ))
+ (extent->lower_first == (u32) -1))
goto out;
- /* Verify count is not zero and does not cause the extent to wrap */
+ /* Verify count is not zero and does not cause the
+ * extent to wrap
+ */
if ((extent->first + extent->count) <= extent->first)
goto out;
- if ((extent->lower_first + extent->count) <= extent->lower_first)
+ if ((extent->lower_first + extent->count) <=
+ extent->lower_first)
goto out;
/* Do the ranges in extent overlap any previous extents? */
@@ -751,7 +756,8 @@ out:
return ret;
}
-ssize_t proc_uid_map_write(struct file *file, const char __user *buf, size_t size, loff_t *ppos)
+ssize_t proc_uid_map_write(struct file *file, const char __user *buf,
+ size_t size, loff_t *ppos)
{
struct seq_file *seq = file->private_data;
struct user_namespace *ns = seq->private;
@@ -767,7 +773,8 @@ ssize_t proc_uid_map_write(struct file *file, const char __user *buf, size_t siz
&ns->uid_map, &ns->parent->uid_map);
}
-ssize_t proc_gid_map_write(struct file *file, const char __user *buf, size_t size, loff_t *ppos)
+ssize_t proc_gid_map_write(struct file *file, const char __user *buf,
+ size_t size, loff_t *ppos)
{
struct seq_file *seq = file->private_data;
struct user_namespace *ns = seq->private;
@@ -783,7 +790,8 @@ ssize_t proc_gid_map_write(struct file *file, const char __user *buf, size_t siz
&ns->gid_map, &ns->parent->gid_map);
}
-ssize_t proc_projid_map_write(struct file *file, const char __user *buf, size_t size, loff_t *ppos)
+ssize_t proc_projid_map_write(struct file *file, const char __user *buf,
+ size_t size, loff_t *ppos)
{
struct seq_file *seq = file->private_data;
struct user_namespace *ns = seq->private;
@@ -800,7 +808,7 @@ ssize_t proc_projid_map_write(struct file *file, const char __user *buf, size_t
&ns->projid_map, &ns->parent->projid_map);
}
-static bool new_idmap_permitted(const struct file *file,
+static bool new_idmap_permitted(const struct file *file,
struct user_namespace *ns, int cap_setid,
struct uid_gid_map *new_map)
{
@@ -811,8 +819,7 @@ static bool new_idmap_permitted(const struct file *file,
kuid_t uid = make_kuid(ns->parent, id);
if (uid_eq(uid, file->f_cred->fsuid))
return true;
- }
- else if (cap_setid == CAP_SETGID) {
+ } else if (cap_setid == CAP_SETGID) {
kgid_t gid = make_kgid(ns->parent, id);
if (gid_eq(gid, file->f_cred->fsgid))
return true;