/* SPDX-License-Identifier: GPL-2.0 */#include <linux/kernel.h>#include <linux/types.h>#include <linux/spinlock_types.h>#include <linux/slab.h>#include <linux/ioctl.h> /* khandle stuff  ***********************************************************/ /* * The 2.9 core will put 64 bit handles in here like this: *    1234 0000 0000 5678 * The 3.0 and beyond cores will put 128 bit handles in here like this: *    1234 5678 90AB CDEF * The kernel module will always use the first four bytes and * the last four bytes as an inum. */struct orangefs_khandle {	unsigned char u[16];}  __aligned(8); /* * kernel version of an object ref. */struct orangefs_object_kref {	struct orangefs_khandle khandle;	__s32 fs_id;	__s32 __pad1;}; /* * compare 2 khandles assumes little endian thus from large address to * small address */static inline int ORANGEFS_khandle_cmp(const struct orangefs_khandle *kh1,				   const struct orangefs_khandle *kh2){	int i; 	for (i = 15; i >= 0; i--) {		if (kh1->u[i] > kh2->u[i])			return 1;		if (kh1->u[i] < kh2->u[i])			return -1;	} 	return 0;} static inline void ORANGEFS_khandle_to(const struct orangefs_khandle *kh,				   void *p, int size){ 	memcpy(p, kh->u, 16);	memset(p + 16, 0, size - 16); } static inline void ORANGEFS_khandle_from(struct orangefs_khandle *kh,				     void *p, int size){	memset(kh, 0, 16);	memcpy(kh->u, p, 16); } /* pvfs2-types.h ************************************************************/ #define ORANGEFS_SUPER_MAGIC 0x20030528 /* * ORANGEFS error codes are a signed 32-bit integer. Error codes are negative, but * the sign is stripped before decoding. */ /* Bit 31 is not used since it is the sign. */ /* * Bit 30 specifies that this is a ORANGEFS error. A ORANGEFS error is either an * encoded errno value or a ORANGEFS protocol error. */#define ORANGEFS_ERROR_BIT (1 << 30) /* * Bit 29 specifies that this is a ORANGEFS protocol error and not an encoded * errno value. */#define ORANGEFS_NON_ERRNO_ERROR_BIT (1 << 29) /* * Bits 9, 8, and 7 specify the error class, which encodes the section of * server code the error originated in for logging purposes. It is not used * in the kernel except to be masked out. */#define ORANGEFS_ERROR_CLASS_BITS 0x380 /* Bits 6 - 0 are reserved for the actual error code. */#define ORANGEFS_ERROR_NUMBER_BITS 0x7f /* Encoded errno values decoded by PINT_errno_mapping in orangefs-utils.c. */ /* Our own ORANGEFS protocol error codes. */#define ORANGEFS_ECANCEL    (1|ORANGEFS_NON_ERRNO_ERROR_BIT|ORANGEFS_ERROR_BIT)#define ORANGEFS_EDEVINIT   (2|ORANGEFS_NON_ERRNO_ERROR_BIT|ORANGEFS_ERROR_BIT)#define ORANGEFS_EDETAIL    (3|ORANGEFS_NON_ERRNO_ERROR_BIT|ORANGEFS_ERROR_BIT)#define ORANGEFS_EHOSTNTFD  (4|ORANGEFS_NON_ERRNO_ERROR_BIT|ORANGEFS_ERROR_BIT)#define ORANGEFS_EADDRNTFD  (5|ORANGEFS_NON_ERRNO_ERROR_BIT|ORANGEFS_ERROR_BIT)#define ORANGEFS_ENORECVR   (6|ORANGEFS_NON_ERRNO_ERROR_BIT|ORANGEFS_ERROR_BIT)#define ORANGEFS_ETRYAGAIN  (7|ORANGEFS_NON_ERRNO_ERROR_BIT|ORANGEFS_ERROR_BIT)#define ORANGEFS_ENOTPVFS   (8|ORANGEFS_NON_ERRNO_ERROR_BIT|ORANGEFS_ERROR_BIT)#define ORANGEFS_ESECURITY  (9|ORANGEFS_NON_ERRNO_ERROR_BIT|ORANGEFS_ERROR_BIT) /* permission bits */#define ORANGEFS_O_EXECUTE (1 << 0)#define ORANGEFS_O_WRITE   (1 << 1)#define ORANGEFS_O_READ    (1 << 2)#define ORANGEFS_G_EXECUTE (1 << 3)#define ORANGEFS_G_WRITE   (1 << 4)#define ORANGEFS_G_READ    (1 << 5)#define ORANGEFS_U_EXECUTE (1 << 6)#define ORANGEFS_U_WRITE   (1 << 7)#define ORANGEFS_U_READ    (1 << 8)/* no ORANGEFS_U_VTX (sticky bit) */#define ORANGEFS_G_SGID    (1 << 10)#define ORANGEFS_U_SUID    (1 << 11) #define ORANGEFS_ITERATE_START    2147483646#define ORANGEFS_ITERATE_END      2147483645#define ORANGEFS_IMMUTABLE_FL FS_IMMUTABLE_FL#define ORANGEFS_APPEND_FL    FS_APPEND_FL#define ORANGEFS_NOATIME_FL   FS_NOATIME_FL#define ORANGEFS_MIRROR_FL    0x01000000ULL#define ORANGEFS_FS_ID_NULL       ((__s32)0)#define ORANGEFS_ATTR_SYS_UID                   (1 << 0)#define ORANGEFS_ATTR_SYS_GID                   (1 << 1)#define ORANGEFS_ATTR_SYS_PERM                  (1 << 2)#define ORANGEFS_ATTR_SYS_ATIME                 (1 << 3)#define ORANGEFS_ATTR_SYS_CTIME                 (1 << 4)#define ORANGEFS_ATTR_SYS_MTIME                 (1 << 5)#define ORANGEFS_ATTR_SYS_TYPE                  (1 << 6)#define ORANGEFS_ATTR_SYS_ATIME_SET             (1 << 7)#define ORANGEFS_ATTR_SYS_MTIME_SET             (1 << 8)#define ORANGEFS_ATTR_SYS_SIZE                  (1 << 20)#define ORANGEFS_ATTR_SYS_LNK_TARGET            (1 << 24)#define ORANGEFS_ATTR_SYS_DFILE_COUNT           (1 << 25)#define ORANGEFS_ATTR_SYS_DIRENT_COUNT          (1 << 26)#define ORANGEFS_ATTR_SYS_BLKSIZE               (1 << 28)#define ORANGEFS_ATTR_SYS_MIRROR_COPIES_COUNT   (1 << 29)#define ORANGEFS_ATTR_SYS_COMMON_ALL	\	(ORANGEFS_ATTR_SYS_UID	|	\	 ORANGEFS_ATTR_SYS_GID	|	\	 ORANGEFS_ATTR_SYS_PERM	|	\	 ORANGEFS_ATTR_SYS_ATIME	|	\	 ORANGEFS_ATTR_SYS_CTIME	|	\	 ORANGEFS_ATTR_SYS_MTIME	|	\	 ORANGEFS_ATTR_SYS_TYPE) #define ORANGEFS_ATTR_SYS_ALL_SETABLE		\(ORANGEFS_ATTR_SYS_COMMON_ALL-ORANGEFS_ATTR_SYS_TYPE) #define ORANGEFS_ATTR_SYS_ALL_NOHINT			\	(ORANGEFS_ATTR_SYS_COMMON_ALL		|	\	 ORANGEFS_ATTR_SYS_SIZE			|	\	 ORANGEFS_ATTR_SYS_LNK_TARGET		|	\	 ORANGEFS_ATTR_SYS_DFILE_COUNT		|	\	 ORANGEFS_ATTR_SYS_MIRROR_COPIES_COUNT	|	\	 ORANGEFS_ATTR_SYS_DIRENT_COUNT		|	\	 ORANGEFS_ATTR_SYS_BLKSIZE) #define ORANGEFS_XATTR_REPLACE 0x2#define ORANGEFS_XATTR_CREATE  0x1#define ORANGEFS_MAX_SERVER_ADDR_LEN 256#define ORANGEFS_NAME_MAX                256/* * max extended attribute name len as imposed by the VFS and exploited for the * upcall request types. * NOTE: Please retain them as multiples of 8 even if you wish to change them * This is *NECESSARY* for supporting 32 bit user-space binaries on a 64-bit * kernel. Due to implementation within DBPF, this really needs to be * ORANGEFS_NAME_MAX, which it was the same value as, but no reason to let it * break if that changes in the future. */#define ORANGEFS_MAX_XATTR_NAMELEN   ORANGEFS_NAME_MAX	/* Not the same as						 * XATTR_NAME_MAX defined						 * by <linux/xattr.h>						 */#define ORANGEFS_MAX_XATTR_VALUELEN  8192	/* Not the same as XATTR_SIZE_MAX					 * defined by <linux/xattr.h>					 */#define ORANGEFS_MAX_XATTR_LISTLEN   16	/* Not the same as XATTR_LIST_MAX					 * defined by <linux/xattr.h>					 *//* * ORANGEFS I/O operation types, used in both system and server interfaces. */enum ORANGEFS_io_type {	ORANGEFS_IO_READ = 1,	ORANGEFS_IO_WRITE = 2}; /* * If this enum is modified the server parameters related to the precreate pool * batch and low threshold sizes may need to be modified  to reflect this * change. */enum orangefs_ds_type {	ORANGEFS_TYPE_NONE = 0,	ORANGEFS_TYPE_METAFILE = (1 << 0),	ORANGEFS_TYPE_DATAFILE = (1 << 1),	ORANGEFS_TYPE_DIRECTORY = (1 << 2),	ORANGEFS_TYPE_SYMLINK = (1 << 3),	ORANGEFS_TYPE_DIRDATA = (1 << 4),	ORANGEFS_TYPE_INTERNAL = (1 << 5)	/* for the server's private use */}; /* This structure is used by the VFS-client interaction alone */struct ORANGEFS_keyval_pair {	char key[ORANGEFS_MAX_XATTR_NAMELEN];	__s32 key_sz;	/* __s32 for portable, fixed-size structures */	__s32 val_sz;	char val[ORANGEFS_MAX_XATTR_VALUELEN];}; /* pvfs2-sysint.h ***********************************************************//* Describes attributes for a file, directory, or symlink. */struct ORANGEFS_sys_attr_s {	__u32 owner;	__u32 group;	__u32 perms;	__u64 atime;	__u64 mtime;	__u64 ctime;	__s64 size; 	/* NOTE: caller must free if valid */	char *link_target; 	/* Changed to __s32 so that size of structure does not change */	__s32 dfile_count; 	/* Changed to __s32 so that size of structure does not change */	__s32 distr_dir_servers_initial; 	/* Changed to __s32 so that size of structure does not change */	__s32 distr_dir_servers_max; 	/* Changed to __s32 so that size of structure does not change */	__s32 distr_dir_split_size; 	__u32 mirror_copies_count; 	/* NOTE: caller must free if valid */	char *dist_name; 	/* NOTE: caller must free if valid */	char *dist_params; 	__s64 dirent_count;	enum orangefs_ds_type objtype;	__u64 flags;	__u32 mask;	__s64 blksize;}; #define ORANGEFS_LOOKUP_LINK_NO_FOLLOW 0 /* pint-dev.h ***************************************************************/ /* parameter structure used in ORANGEFS_DEV_DEBUG ioctl command */struct dev_mask_info_s {	enum {		KERNEL_MASK,		CLIENT_MASK,	} mask_type;	__u64 mask_value;}; struct dev_mask2_info_s {	__u64 mask1_value;	__u64 mask2_value;}; /* pvfs2-util.h *************************************************************/__s32 ORANGEFS_util_translate_mode(int mode); /* pvfs2-debug.h ************************************************************/#include "orangefs-debug.h" /* pvfs2-internal.h *********************************************************/#define llu(x) (unsigned long long)(x)#define lld(x) (long long)(x) /* pint-dev-shared.h ********************************************************/#define ORANGEFS_DEV_MAGIC 'k' #define ORANGEFS_READDIR_DEFAULT_DESC_COUNT  5 #define DEV_GET_MAGIC           0x1#define DEV_GET_MAX_UPSIZE      0x2#define DEV_GET_MAX_DOWNSIZE    0x3#define DEV_MAP                 0x4#define DEV_REMOUNT_ALL         0x5#define DEV_DEBUG               0x6#define DEV_UPSTREAM            0x7#define DEV_CLIENT_MASK         0x8#define DEV_CLIENT_STRING       0x9#define DEV_MAX_NR              0xa /* supported ioctls, codes are with respect to user-space */enum {	ORANGEFS_DEV_GET_MAGIC = _IOW(ORANGEFS_DEV_MAGIC, DEV_GET_MAGIC, __s32),	ORANGEFS_DEV_GET_MAX_UPSIZE =	    _IOW(ORANGEFS_DEV_MAGIC, DEV_GET_MAX_UPSIZE, __s32),	ORANGEFS_DEV_GET_MAX_DOWNSIZE =	    _IOW(ORANGEFS_DEV_MAGIC, DEV_GET_MAX_DOWNSIZE, __s32),	ORANGEFS_DEV_MAP = _IO(ORANGEFS_DEV_MAGIC, DEV_MAP),	ORANGEFS_DEV_REMOUNT_ALL = _IO(ORANGEFS_DEV_MAGIC, DEV_REMOUNT_ALL),	ORANGEFS_DEV_DEBUG = _IOR(ORANGEFS_DEV_MAGIC, DEV_DEBUG, __s32),	ORANGEFS_DEV_UPSTREAM = _IOW(ORANGEFS_DEV_MAGIC, DEV_UPSTREAM, int),	ORANGEFS_DEV_CLIENT_MASK = _IOW(ORANGEFS_DEV_MAGIC,				    DEV_CLIENT_MASK,				    struct dev_mask2_info_s),	ORANGEFS_DEV_CLIENT_STRING = _IOW(ORANGEFS_DEV_MAGIC,				      DEV_CLIENT_STRING,				      char *),	ORANGEFS_DEV_MAXNR = DEV_MAX_NR,}; /* * version number for use in communicating between kernel space and user * space. Zero signifies the upstream version of the kernel module. */#define ORANGEFS_KERNEL_PROTO_VERSION 0#define ORANGEFS_MINIMUM_USERSPACE_VERSION 20903 /* * describes memory regions to map in the ORANGEFS_DEV_MAP ioctl. * NOTE: See devorangefs-req.c for 32 bit compat structure. * Since this structure has a variable-sized layout that is different * on 32 and 64 bit platforms, we need to normalize to a 64 bit layout * on such systems before servicing ioctl calls from user-space binaries * that may be 32 bit! */struct ORANGEFS_dev_map_desc {	void __user *ptr;	__s32 total_size;	__s32 size;	__s32 count;}; /* gossip.h *****************************************************************/ extern __u64 orangefs_gossip_debug_mask; /* try to avoid function call overhead by checking masks in macro */#define gossip_debug(mask, fmt, ...)					\do {									\	if (orangefs_gossip_debug_mask & (mask))			\		printk(KERN_DEBUG fmt, ##__VA_ARGS__);			\} while (0) #define gossip_err pr_err