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-rw-r--r--include/linux/fs.h174
1 files changed, 84 insertions, 90 deletions
diff --git a/include/linux/fs.h b/include/linux/fs.h
index 006278d84d2f..2acc46fb5f97 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -1296,22 +1296,22 @@ static inline void i_gid_write(struct inode *inode, gid_t gid)
}
/**
- * i_uid_into_vfsuid - map an inode's i_uid down into a mnt_userns
- * @mnt_userns: user namespace of the mount the inode was found from
+ * i_uid_into_vfsuid - map an inode's i_uid down according to an idmapping
+ * @idmap: idmap of the mount the inode was found from
* @inode: inode to map
*
- * Return: whe inode's i_uid mapped down according to @mnt_userns.
+ * Return: whe inode's i_uid mapped down according to @idmap.
* If the inode's i_uid has no mapping INVALID_VFSUID is returned.
*/
-static inline vfsuid_t i_uid_into_vfsuid(struct user_namespace *mnt_userns,
+static inline vfsuid_t i_uid_into_vfsuid(struct mnt_idmap *idmap,
const struct inode *inode)
{
- return make_vfsuid(mnt_userns, i_user_ns(inode), inode->i_uid);
+ return make_vfsuid(idmap, i_user_ns(inode), inode->i_uid);
}
/**
* i_uid_needs_update - check whether inode's i_uid needs to be updated
- * @mnt_userns: user namespace of the mount the inode was found from
+ * @idmap: idmap of the mount the inode was found from
* @attr: the new attributes of @inode
* @inode: the inode to update
*
@@ -1320,50 +1320,50 @@ static inline vfsuid_t i_uid_into_vfsuid(struct user_namespace *mnt_userns,
*
* Return: true if @inode's i_uid field needs to be updated, false if not.
*/
-static inline bool i_uid_needs_update(struct user_namespace *mnt_userns,
+static inline bool i_uid_needs_update(struct mnt_idmap *idmap,
const struct iattr *attr,
const struct inode *inode)
{
return ((attr->ia_valid & ATTR_UID) &&
!vfsuid_eq(attr->ia_vfsuid,
- i_uid_into_vfsuid(mnt_userns, inode)));
+ i_uid_into_vfsuid(idmap, inode)));
}
/**
* i_uid_update - update @inode's i_uid field
- * @mnt_userns: user namespace of the mount the inode was found from
+ * @idmap: idmap of the mount the inode was found from
* @attr: the new attributes of @inode
* @inode: the inode to update
*
* Safely update @inode's i_uid field translating the vfsuid of any idmapped
* mount into the filesystem kuid.
*/
-static inline void i_uid_update(struct user_namespace *mnt_userns,
+static inline void i_uid_update(struct mnt_idmap *idmap,
const struct iattr *attr,
struct inode *inode)
{
if (attr->ia_valid & ATTR_UID)
- inode->i_uid = from_vfsuid(mnt_userns, i_user_ns(inode),
+ inode->i_uid = from_vfsuid(idmap, i_user_ns(inode),
attr->ia_vfsuid);
}
/**
- * i_gid_into_vfsgid - map an inode's i_gid down into a mnt_userns
- * @mnt_userns: user namespace of the mount the inode was found from
+ * i_gid_into_vfsgid - map an inode's i_gid down according to an idmapping
+ * @idmap: idmap of the mount the inode was found from
* @inode: inode to map
*
- * Return: the inode's i_gid mapped down according to @mnt_userns.
+ * Return: the inode's i_gid mapped down according to @idmap.
* If the inode's i_gid has no mapping INVALID_VFSGID is returned.
*/
-static inline vfsgid_t i_gid_into_vfsgid(struct user_namespace *mnt_userns,
+static inline vfsgid_t i_gid_into_vfsgid(struct mnt_idmap *idmap,
const struct inode *inode)
{
- return make_vfsgid(mnt_userns, i_user_ns(inode), inode->i_gid);
+ return make_vfsgid(idmap, i_user_ns(inode), inode->i_gid);
}
/**
* i_gid_needs_update - check whether inode's i_gid needs to be updated
- * @mnt_userns: user namespace of the mount the inode was found from
+ * @idmap: idmap of the mount the inode was found from
* @attr: the new attributes of @inode
* @inode: the inode to update
*
@@ -1372,83 +1372,83 @@ static inline vfsgid_t i_gid_into_vfsgid(struct user_namespace *mnt_userns,
*
* Return: true if @inode's i_gid field needs to be updated, false if not.
*/
-static inline bool i_gid_needs_update(struct user_namespace *mnt_userns,
+static inline bool i_gid_needs_update(struct mnt_idmap *idmap,
const struct iattr *attr,
const struct inode *inode)
{
return ((attr->ia_valid & ATTR_GID) &&
!vfsgid_eq(attr->ia_vfsgid,
- i_gid_into_vfsgid(mnt_userns, inode)));
+ i_gid_into_vfsgid(idmap, inode)));
}
/**
* i_gid_update - update @inode's i_gid field
- * @mnt_userns: user namespace of the mount the inode was found from
+ * @idmap: idmap of the mount the inode was found from
* @attr: the new attributes of @inode
* @inode: the inode to update
*
* Safely update @inode's i_gid field translating the vfsgid of any idmapped
* mount into the filesystem kgid.
*/
-static inline void i_gid_update(struct user_namespace *mnt_userns,
+static inline void i_gid_update(struct mnt_idmap *idmap,
const struct iattr *attr,
struct inode *inode)
{
if (attr->ia_valid & ATTR_GID)
- inode->i_gid = from_vfsgid(mnt_userns, i_user_ns(inode),
+ inode->i_gid = from_vfsgid(idmap, i_user_ns(inode),
attr->ia_vfsgid);
}
/**
* inode_fsuid_set - initialize inode's i_uid field with callers fsuid
* @inode: inode to initialize
- * @mnt_userns: user namespace of the mount the inode was found from
+ * @idmap: idmap of the mount the inode was found from
*
* Initialize the i_uid field of @inode. If the inode was found/created via
- * an idmapped mount map the caller's fsuid according to @mnt_users.
+ * an idmapped mount map the caller's fsuid according to @idmap.
*/
static inline void inode_fsuid_set(struct inode *inode,
- struct user_namespace *mnt_userns)
+ struct mnt_idmap *idmap)
{
- inode->i_uid = mapped_fsuid(mnt_userns, i_user_ns(inode));
+ inode->i_uid = mapped_fsuid(idmap, i_user_ns(inode));
}
/**
* inode_fsgid_set - initialize inode's i_gid field with callers fsgid
* @inode: inode to initialize
- * @mnt_userns: user namespace of the mount the inode was found from
+ * @idmap: idmap of the mount the inode was found from
*
* Initialize the i_gid field of @inode. If the inode was found/created via
- * an idmapped mount map the caller's fsgid according to @mnt_users.
+ * an idmapped mount map the caller's fsgid according to @idmap.
*/
static inline void inode_fsgid_set(struct inode *inode,
- struct user_namespace *mnt_userns)
+ struct mnt_idmap *idmap)
{
- inode->i_gid = mapped_fsgid(mnt_userns, i_user_ns(inode));
+ inode->i_gid = mapped_fsgid(idmap, i_user_ns(inode));
}
/**
* fsuidgid_has_mapping() - check whether caller's fsuid/fsgid is mapped
* @sb: the superblock we want a mapping in
- * @mnt_userns: user namespace of the relevant mount
+ * @idmap: idmap of the relevant mount
*
* Check whether the caller's fsuid and fsgid have a valid mapping in the
* s_user_ns of the superblock @sb. If the caller is on an idmapped mount map
- * the caller's fsuid and fsgid according to the @mnt_userns first.
+ * the caller's fsuid and fsgid according to the @idmap first.
*
* Return: true if fsuid and fsgid is mapped, false if not.
*/
static inline bool fsuidgid_has_mapping(struct super_block *sb,
- struct user_namespace *mnt_userns)
+ struct mnt_idmap *idmap)
{
struct user_namespace *fs_userns = sb->s_user_ns;
kuid_t kuid;
kgid_t kgid;
- kuid = mapped_fsuid(mnt_userns, fs_userns);
+ kuid = mapped_fsuid(idmap, fs_userns);
if (!uid_valid(kuid))
return false;
- kgid = mapped_fsgid(mnt_userns, fs_userns);
+ kgid = mapped_fsgid(idmap, fs_userns);
if (!gid_valid(kgid))
return false;
return kuid_has_mapping(fs_userns, kuid) &&
@@ -1602,42 +1602,42 @@ static inline bool sb_start_intwrite_trylock(struct super_block *sb)
return __sb_start_write_trylock(sb, SB_FREEZE_FS);
}
-bool inode_owner_or_capable(struct user_namespace *mnt_userns,
+bool inode_owner_or_capable(struct mnt_idmap *idmap,
const struct inode *inode);
/*
* VFS helper functions..
*/
-int vfs_create(struct user_namespace *, struct inode *,
+int vfs_create(struct mnt_idmap *, struct inode *,
struct dentry *, umode_t, bool);
-int vfs_mkdir(struct user_namespace *, struct inode *,
+int vfs_mkdir(struct mnt_idmap *, struct inode *,
struct dentry *, umode_t);
-int vfs_mknod(struct user_namespace *, struct inode *, struct dentry *,
+int vfs_mknod(struct mnt_idmap *, struct inode *, struct dentry *,
umode_t, dev_t);
-int vfs_symlink(struct user_namespace *, struct inode *,
+int vfs_symlink(struct mnt_idmap *, struct inode *,
struct dentry *, const char *);
-int vfs_link(struct dentry *, struct user_namespace *, struct inode *,
+int vfs_link(struct dentry *, struct mnt_idmap *, struct inode *,
struct dentry *, struct inode **);
-int vfs_rmdir(struct user_namespace *, struct inode *, struct dentry *);
-int vfs_unlink(struct user_namespace *, struct inode *, struct dentry *,
+int vfs_rmdir(struct mnt_idmap *, struct inode *, struct dentry *);
+int vfs_unlink(struct mnt_idmap *, struct inode *, struct dentry *,
struct inode **);
/**
* struct renamedata - contains all information required for renaming
- * @old_mnt_userns: old user namespace of the mount the inode was found from
+ * @old_mnt_idmap: idmap of the old mount the inode was found from
* @old_dir: parent of source
* @old_dentry: source
- * @new_mnt_userns: new user namespace of the mount the inode was found from
+ * @new_mnt_idmap: idmap of the new mount the inode was found from
* @new_dir: parent of destination
* @new_dentry: destination
* @delegated_inode: returns an inode needing a delegation break
* @flags: rename flags
*/
struct renamedata {
- struct user_namespace *old_mnt_userns;
+ struct mnt_idmap *old_mnt_idmap;
struct inode *old_dir;
struct dentry *old_dentry;
- struct user_namespace *new_mnt_userns;
+ struct mnt_idmap *new_mnt_idmap;
struct inode *new_dir;
struct dentry *new_dentry;
struct inode **delegated_inode;
@@ -1646,14 +1646,14 @@ struct renamedata {
int vfs_rename(struct renamedata *);
-static inline int vfs_whiteout(struct user_namespace *mnt_userns,
+static inline int vfs_whiteout(struct mnt_idmap *idmap,
struct inode *dir, struct dentry *dentry)
{
- return vfs_mknod(mnt_userns, dir, dentry, S_IFCHR | WHITEOUT_MODE,
+ return vfs_mknod(idmap, dir, dentry, S_IFCHR | WHITEOUT_MODE,
WHITEOUT_DEV);
}
-struct file *vfs_tmpfile_open(struct user_namespace *mnt_userns,
+struct file *vfs_tmpfile_open(struct mnt_idmap *idmap,
const struct path *parentpath,
umode_t mode, int open_flag, const struct cred *cred);
@@ -1677,10 +1677,10 @@ extern long compat_ptr_ioctl(struct file *file, unsigned int cmd,
/*
* VFS file helper functions.
*/
-void inode_init_owner(struct user_namespace *mnt_userns, struct inode *inode,
+void inode_init_owner(struct mnt_idmap *idmap, struct inode *inode,
const struct inode *dir, umode_t mode);
extern bool may_open_dev(const struct path *path);
-umode_t mode_strip_sgid(struct user_namespace *mnt_userns,
+umode_t mode_strip_sgid(struct mnt_idmap *idmap,
const struct inode *dir, umode_t mode);
/*
@@ -1798,27 +1798,26 @@ struct file_operations {
struct inode_operations {
struct dentry * (*lookup) (struct inode *,struct dentry *, unsigned int);
const char * (*get_link) (struct dentry *, struct inode *, struct delayed_call *);
- int (*permission) (struct user_namespace *, struct inode *, int);
+ int (*permission) (struct mnt_idmap *, struct inode *, int);
struct posix_acl * (*get_inode_acl)(struct inode *, int, bool);
int (*readlink) (struct dentry *, char __user *,int);
- int (*create) (struct user_namespace *, struct inode *,struct dentry *,
+ int (*create) (struct mnt_idmap *, struct inode *,struct dentry *,
umode_t, bool);
int (*link) (struct dentry *,struct inode *,struct dentry *);
int (*unlink) (struct inode *,struct dentry *);
- int (*symlink) (struct user_namespace *, struct inode *,struct dentry *,
+ int (*symlink) (struct mnt_idmap *, struct inode *,struct dentry *,
const char *);
- int (*mkdir) (struct user_namespace *, struct inode *,struct dentry *,
+ int (*mkdir) (struct mnt_idmap *, struct inode *,struct dentry *,
umode_t);
int (*rmdir) (struct inode *,struct dentry *);
- int (*mknod) (struct user_namespace *, struct inode *,struct dentry *,
+ int (*mknod) (struct mnt_idmap *, struct inode *,struct dentry *,
umode_t,dev_t);
- int (*rename) (struct user_namespace *, struct inode *, struct dentry *,
+ int (*rename) (struct mnt_idmap *, struct inode *, struct dentry *,
struct inode *, struct dentry *, unsigned int);
- int (*setattr) (struct user_namespace *, struct dentry *,
- struct iattr *);
- int (*getattr) (struct user_namespace *, const struct path *,
+ int (*setattr) (struct mnt_idmap *, struct dentry *, struct iattr *);
+ int (*getattr) (struct mnt_idmap *, const struct path *,
struct kstat *, u32, unsigned int);
ssize_t (*listxattr) (struct dentry *, char *, size_t);
int (*fiemap)(struct inode *, struct fiemap_extent_info *, u64 start,
@@ -1827,13 +1826,13 @@ struct inode_operations {
int (*atomic_open)(struct inode *, struct dentry *,
struct file *, unsigned open_flag,
umode_t create_mode);
- int (*tmpfile) (struct user_namespace *, struct inode *,
+ int (*tmpfile) (struct mnt_idmap *, struct inode *,
struct file *, umode_t);
- struct posix_acl *(*get_acl)(struct user_namespace *, struct dentry *,
+ struct posix_acl *(*get_acl)(struct mnt_idmap *, struct dentry *,
int);
- int (*set_acl)(struct user_namespace *, struct dentry *,
+ int (*set_acl)(struct mnt_idmap *, struct dentry *,
struct posix_acl *, int);
- int (*fileattr_set)(struct user_namespace *mnt_userns,
+ int (*fileattr_set)(struct mnt_idmap *idmap,
struct dentry *dentry, struct fileattr *fa);
int (*fileattr_get)(struct dentry *dentry, struct fileattr *fa);
} ____cacheline_aligned;
@@ -1987,11 +1986,11 @@ static inline bool sb_rdonly(const struct super_block *sb) { return sb->s_flags
#define IS_WHITEOUT(inode) (S_ISCHR(inode->i_mode) && \
(inode)->i_rdev == WHITEOUT_DEV)
-static inline bool HAS_UNMAPPED_ID(struct user_namespace *mnt_userns,
+static inline bool HAS_UNMAPPED_ID(struct mnt_idmap *idmap,
struct inode *inode)
{
- return !vfsuid_valid(i_uid_into_vfsuid(mnt_userns, inode)) ||
- !vfsgid_valid(i_gid_into_vfsgid(mnt_userns, inode));
+ return !vfsuid_valid(i_uid_into_vfsuid(idmap, inode)) ||
+ !vfsgid_valid(i_gid_into_vfsgid(idmap, inode));
}
static inline void init_sync_kiocb(struct kiocb *kiocb, struct file *filp)
@@ -2296,11 +2295,6 @@ struct filename {
};
static_assert(offsetof(struct filename, iname) % sizeof(long) == 0);
-static inline struct user_namespace *file_mnt_user_ns(struct file *file)
-{
- return mnt_user_ns(file->f_path.mnt);
-}
-
static inline struct mnt_idmap *file_mnt_idmap(struct file *file)
{
return mnt_idmap(file->f_path.mnt);
@@ -2320,7 +2314,7 @@ static inline bool is_idmapped_mnt(const struct vfsmount *mnt)
}
extern long vfs_truncate(const struct path *, loff_t);
-int do_truncate(struct user_namespace *, struct dentry *, loff_t start,
+int do_truncate(struct mnt_idmap *, struct dentry *, loff_t start,
unsigned int time_attrs, struct file *filp);
extern int vfs_fallocate(struct file *file, int mode, loff_t offset,
loff_t len);
@@ -2475,21 +2469,21 @@ static inline int bmap(struct inode *inode, sector_t *block)
}
#endif
-int notify_change(struct user_namespace *, struct dentry *,
+int notify_change(struct mnt_idmap *, struct dentry *,
struct iattr *, struct inode **);
-int inode_permission(struct user_namespace *, struct inode *, int);
-int generic_permission(struct user_namespace *, struct inode *, int);
+int inode_permission(struct mnt_idmap *, struct inode *, int);
+int generic_permission(struct mnt_idmap *, struct inode *, int);
static inline int file_permission(struct file *file, int mask)
{
- return inode_permission(file_mnt_user_ns(file),
+ return inode_permission(file_mnt_idmap(file),
file_inode(file), mask);
}
static inline int path_permission(const struct path *path, int mask)
{
- return inode_permission(mnt_user_ns(path->mnt),
+ return inode_permission(mnt_idmap(path->mnt),
d_inode(path->dentry), mask);
}
-int __check_sticky(struct user_namespace *mnt_userns, struct inode *dir,
+int __check_sticky(struct mnt_idmap *idmap, struct inode *dir,
struct inode *inode);
static inline bool execute_ok(struct inode *inode)
@@ -2677,7 +2671,7 @@ extern void __destroy_inode(struct inode *);
extern struct inode *new_inode_pseudo(struct super_block *sb);
extern struct inode *new_inode(struct super_block *sb);
extern void free_inode_nonrcu(struct inode *inode);
-extern int setattr_should_drop_suidgid(struct user_namespace *, struct inode *);
+extern int setattr_should_drop_suidgid(struct mnt_idmap *, struct inode *);
extern int file_remove_privs(struct file *);
/*
@@ -2836,7 +2830,7 @@ extern void page_put_link(void *);
extern int page_symlink(struct inode *inode, const char *symname, int len);
extern const struct inode_operations page_symlink_inode_operations;
extern void kfree_link(void *);
-void generic_fillattr(struct user_namespace *, struct inode *, struct kstat *);
+void generic_fillattr(struct mnt_idmap *, struct inode *, struct kstat *);
void generic_fill_statx_attr(struct inode *inode, struct kstat *stat);
extern int vfs_getattr_nosec(const struct path *, struct kstat *, u32, unsigned int);
extern int vfs_getattr(const struct path *, struct kstat *, u32, unsigned int);
@@ -2887,9 +2881,9 @@ extern int dcache_dir_open(struct inode *, struct file *);
extern int dcache_dir_close(struct inode *, struct file *);
extern loff_t dcache_dir_lseek(struct file *, loff_t, int);
extern int dcache_readdir(struct file *, struct dir_context *);
-extern int simple_setattr(struct user_namespace *, struct dentry *,
+extern int simple_setattr(struct mnt_idmap *, struct dentry *,
struct iattr *);
-extern int simple_getattr(struct user_namespace *, const struct path *,
+extern int simple_getattr(struct mnt_idmap *, const struct path *,
struct kstat *, u32, unsigned int);
extern int simple_statfs(struct dentry *, struct kstatfs *);
extern int simple_open(struct inode *inode, struct file *file);
@@ -2898,7 +2892,7 @@ extern int simple_unlink(struct inode *, struct dentry *);
extern int simple_rmdir(struct inode *, struct dentry *);
extern int simple_rename_exchange(struct inode *old_dir, struct dentry *old_dentry,
struct inode *new_dir, struct dentry *new_dentry);
-extern int simple_rename(struct user_namespace *, struct inode *,
+extern int simple_rename(struct mnt_idmap *, struct inode *,
struct dentry *, struct inode *, struct dentry *,
unsigned int);
extern void simple_recursive_removal(struct dentry *,
@@ -2940,11 +2934,11 @@ extern int generic_check_addressable(unsigned, u64);
extern void generic_set_encrypted_ci_d_ops(struct dentry *dentry);
-int may_setattr(struct user_namespace *mnt_userns, struct inode *inode,
+int may_setattr(struct mnt_idmap *idmap, struct inode *inode,
unsigned int ia_valid);
-int setattr_prepare(struct user_namespace *, struct dentry *, struct iattr *);
+int setattr_prepare(struct mnt_idmap *, struct dentry *, struct iattr *);
extern int inode_newsize_ok(const struct inode *, loff_t offset);
-void setattr_copy(struct user_namespace *, struct inode *inode,
+void setattr_copy(struct mnt_idmap *, struct inode *inode,
const struct iattr *attr);
extern int file_update_time(struct file *file);
@@ -3111,13 +3105,13 @@ static inline bool is_sxid(umode_t mode)
return mode & (S_ISUID | S_ISGID);
}
-static inline int check_sticky(struct user_namespace *mnt_userns,
+static inline int check_sticky(struct mnt_idmap *idmap,
struct inode *dir, struct inode *inode)
{
if (!(dir->i_mode & S_ISVTX))
return 0;
- return __check_sticky(mnt_userns, dir, inode);
+ return __check_sticky(idmap, dir, inode);
}
static inline void inode_has_no_xattr(struct inode *inode)
generated by cgit v1.2.3 (git 2.39.0) at 2024-07-16 05:42:13 +0300