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-rw-r--r--include/linux/fs.h42
1 files changed, 31 insertions, 11 deletions
diff --git a/include/linux/fs.h b/include/linux/fs.h
index 25c40b9..c0e5337 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -402,6 +402,7 @@ struct inodes_stat_t {
#include <linux/atomic.h>
#include <linux/shrinker.h>
#include <linux/migrate_mode.h>
+#include <linux/uidgid.h>
#include <asm/byteorder.h>
@@ -469,8 +470,8 @@ typedef void (dio_iodone_t)(struct kiocb *iocb, loff_t offset,
struct iattr {
unsigned int ia_valid;
umode_t ia_mode;
- uid_t ia_uid;
- gid_t ia_gid;
+ kuid_t ia_uid;
+ kgid_t ia_gid;
loff_t ia_size;
struct timespec ia_atime;
struct timespec ia_mtime;
@@ -761,8 +762,8 @@ struct posix_acl;
struct inode {
umode_t i_mode;
unsigned short i_opflags;
- uid_t i_uid;
- gid_t i_gid;
+ kuid_t i_uid;
+ kgid_t i_gid;
unsigned int i_flags;
#ifdef CONFIG_FS_POSIX_ACL
@@ -927,6 +928,31 @@ static inline void i_size_write(struct inode *inode, loff_t i_size)
#endif
}
+/* Helper functions so that in most cases filesystems will
+ * not need to deal directly with kuid_t and kgid_t and can
+ * instead deal with the raw numeric values that are stored
+ * in the filesystem.
+ */
+static inline uid_t i_uid_read(const struct inode *inode)
+{
+ return from_kuid(&init_user_ns, inode->i_uid);
+}
+
+static inline gid_t i_gid_read(const struct inode *inode)
+{
+ return from_kgid(&init_user_ns, inode->i_gid);
+}
+
+static inline void i_uid_write(struct inode *inode, uid_t uid)
+{
+ inode->i_uid = make_kuid(&init_user_ns, uid);
+}
+
+static inline void i_gid_write(struct inode *inode, gid_t gid)
+{
+ inode->i_gid = make_kgid(&init_user_ns, gid);
+}
+
static inline unsigned iminor(const struct inode *inode)
{
return MINOR(inode->i_rdev);
@@ -943,7 +969,7 @@ struct fown_struct {
rwlock_t lock; /* protects pid, uid, euid fields */
struct pid *pid; /* pid or -pgrp where SIGIO should be sent */
enum pid_type pid_type; /* Kind of process group SIGIO should be sent to */
- uid_t uid, euid; /* uid/euid of process setting the owner */
+ kuid_t uid, euid; /* uid/euid of process setting the owner */
int signum; /* posix.1b rt signal to be delivered on IO */
};
@@ -1527,12 +1553,6 @@ enum {
#define vfs_check_frozen(sb, level) \
wait_event((sb)->s_wait_unfrozen, ((sb)->s_frozen < (level)))
-/*
- * until VFS tracks user namespaces for inodes, just make all files
- * belong to init_user_ns
- */
-extern struct user_namespace init_user_ns;
-#define inode_userns(inode) (&init_user_ns)
extern bool inode_owner_or_capable(const struct inode *inode);
/* not quite ready to be deprecated, but... */
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