Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   1) /* SPDX-License-Identifier: GPL-2.0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   3)  * (C) 2001 Clemson University and The University of Chicago
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5)  * See COPYING in top-level directory.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9)  *  The ORANGEFS Linux kernel support allows ORANGEFS volumes to be mounted and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10)  *  accessed through the Linux VFS (i.e. using standard I/O system calls).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11)  *  This support is only needed on clients that wish to mount the file system.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16)  *  Declarations and macros for the ORANGEFS Linux kernel support.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19) #ifndef __ORANGEFSKERNEL_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20) #define __ORANGEFSKERNEL_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) #include <linux/moduleparam.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) #include <linux/statfs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) #include <linux/backing-dev.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) #include <linux/device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) #include <linux/mpage.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) #include <linux/namei.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) #include <linux/errno.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) #include <linux/types.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) #include <linux/fs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) #include <linux/vmalloc.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) #include <linux/aio.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) #include <linux/posix_acl.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) #include <linux/posix_acl_xattr.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) #include <linux/compat.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) #include <linux/mount.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) #include <linux/uaccess.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) #include <linux/atomic.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) #include <linux/uio.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) #include <linux/sched/signal.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) #include <linux/mm.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) #include <linux/wait.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) #include <linux/dcache.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) #include <linux/pagemap.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) #include <linux/poll.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) #include <linux/rwsem.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) #include <linux/xattr.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) #include <linux/exportfs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) #include <linux/hashtable.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) #include <asm/unaligned.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) #include "orangefs-dev-proto.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) #define ORANGEFS_DEFAULT_OP_TIMEOUT_SECS       20
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) #define ORANGEFS_BUFMAP_WAIT_TIMEOUT_SECS   30
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) #define ORANGEFS_DEFAULT_SLOT_TIMEOUT_SECS     900	/* 15 minutes */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) #define ORANGEFS_REQDEVICE_NAME          "pvfs2-req"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) #define ORANGEFS_DEVREQ_MAGIC             0x20030529
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) #define ORANGEFS_PURGE_RETRY_COUNT     0x00000005
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) #define MAX_DEV_REQ_UPSIZE (2 * sizeof(__s32) +   \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) sizeof(__u64) + sizeof(struct orangefs_upcall_s))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) #define MAX_DEV_REQ_DOWNSIZE (2 * sizeof(__s32) + \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) sizeof(__u64) + sizeof(struct orangefs_downcall_s))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77)  * valid orangefs kernel operation states
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79)  * unknown  - op was just initialized
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80)  * waiting  - op is on request_list (upward bound)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81)  * inprogr  - op is in progress (waiting for downcall)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82)  * serviced - op has matching downcall; ok
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83)  * purged   - op has to start a timer since client-core
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84)  *            exited uncleanly before servicing op
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85)  * given up - submitter has given up waiting for it
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) enum orangefs_vfs_op_states {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) 	OP_VFS_STATE_UNKNOWN = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) 	OP_VFS_STATE_WAITING = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) 	OP_VFS_STATE_INPROGR = 2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) 	OP_VFS_STATE_SERVICED = 4,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) 	OP_VFS_STATE_PURGED = 8,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) 	OP_VFS_STATE_GIVEN_UP = 16,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97)  * orangefs kernel memory related flags
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) #if (defined CONFIG_DEBUG_SLAB)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) #define ORANGEFS_CACHE_CREATE_FLAGS SLAB_RED_ZONE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) #define ORANGEFS_CACHE_CREATE_FLAGS 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) extern int orangefs_init_acl(struct inode *inode, struct inode *dir);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) extern const struct xattr_handler *orangefs_xattr_handlers[];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) extern struct posix_acl *orangefs_get_acl(struct inode *inode, int type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) extern int orangefs_set_acl(struct inode *inode, struct posix_acl *acl, int type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113)  * orangefs data structures
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) struct orangefs_kernel_op_s {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) 	enum orangefs_vfs_op_states op_state;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) 	__u64 tag;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) 	/*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) 	 * Set uses_shared_memory to non zero if this operation uses
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) 	 * shared memory. If true, then a retry on the op must also
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) 	 * get a new shared memory buffer and re-populate it.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) 	 * Cancels don't care - it only matters for service_operation()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) 	 * retry logics and cancels don't go through it anymore. It
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) 	 * safely stays non-zero when we use it as slot_to_free.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) 	union {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) 		int uses_shared_memory;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) 		int slot_to_free;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) 	};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) 	struct orangefs_upcall_s upcall;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) 	struct orangefs_downcall_s downcall;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) 	struct completion waitq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) 	spinlock_t lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) 	int attempts;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) 	struct list_head list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) #define set_op_state_waiting(op)     ((op)->op_state = OP_VFS_STATE_WAITING)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) #define set_op_state_inprogress(op)  ((op)->op_state = OP_VFS_STATE_INPROGR)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) #define set_op_state_given_up(op)  ((op)->op_state = OP_VFS_STATE_GIVEN_UP)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) static inline void set_op_state_serviced(struct orangefs_kernel_op_s *op)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) 	op->op_state = OP_VFS_STATE_SERVICED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) 	complete(&op->waitq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) #define op_state_waiting(op)     ((op)->op_state & OP_VFS_STATE_WAITING)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) #define op_state_in_progress(op) ((op)->op_state & OP_VFS_STATE_INPROGR)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) #define op_state_serviced(op)    ((op)->op_state & OP_VFS_STATE_SERVICED)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) #define op_state_purged(op)      ((op)->op_state & OP_VFS_STATE_PURGED)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) #define op_state_given_up(op)    ((op)->op_state & OP_VFS_STATE_GIVEN_UP)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) #define op_is_cancel(op)         ((op)->upcall.type == ORANGEFS_VFS_OP_CANCEL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) void op_release(struct orangefs_kernel_op_s *op);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) extern void orangefs_bufmap_put(int);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) static inline void put_cancel(struct orangefs_kernel_op_s *op)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) 	orangefs_bufmap_put(op->slot_to_free);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) 	op_release(op);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) static inline void set_op_state_purged(struct orangefs_kernel_op_s *op)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) 	spin_lock(&op->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) 	if (unlikely(op_is_cancel(op))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) 		list_del_init(&op->list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) 		spin_unlock(&op->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) 		put_cancel(op);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) 	} else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) 		op->op_state |= OP_VFS_STATE_PURGED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) 		complete(&op->waitq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) 		spin_unlock(&op->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) /* per inode private orangefs info */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) struct orangefs_inode_s {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) 	struct orangefs_object_kref refn;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) 	char link_target[ORANGEFS_NAME_MAX];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) 	/*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) 	 * Reading/Writing Extended attributes need to acquire the appropriate
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) 	 * reader/writer semaphore on the orangefs_inode_s structure.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) 	struct rw_semaphore xattr_sem;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) 	struct inode vfs_inode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) 	sector_t last_failed_block_index_read;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) 	unsigned long getattr_time;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) 	unsigned long mapping_time;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) 	int attr_valid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) 	kuid_t attr_uid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) 	kgid_t attr_gid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) 	unsigned long bitlock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) 	DECLARE_HASHTABLE(xattr_cache, 4);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) /* per superblock private orangefs info */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) struct orangefs_sb_info_s {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) 	struct orangefs_khandle root_khandle;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) 	__s32 fs_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) 	int id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) 	int flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) #define ORANGEFS_OPT_INTR	0x01
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) #define ORANGEFS_OPT_LOCAL_LOCK	0x02
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) 	char devname[ORANGEFS_MAX_SERVER_ADDR_LEN];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) 	struct super_block *sb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) 	int mount_pending;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) 	int no_list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) 	struct list_head list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) struct orangefs_stats {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) 	unsigned long cache_hits;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) 	unsigned long cache_misses;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) 	unsigned long reads;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) 	unsigned long writes;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) struct orangefs_cached_xattr {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) 	struct hlist_node node;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) 	char key[ORANGEFS_MAX_XATTR_NAMELEN];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) 	char val[ORANGEFS_MAX_XATTR_VALUELEN];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) 	ssize_t length;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) 	unsigned long timeout;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) struct orangefs_write_range {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) 	loff_t pos;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) 	size_t len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) 	kuid_t uid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) 	kgid_t gid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) extern struct orangefs_stats orangefs_stats;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245)  * NOTE: See Documentation/filesystems/porting.rst for information
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246)  * on implementing FOO_I and properly accessing fs private data
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) static inline struct orangefs_inode_s *ORANGEFS_I(struct inode *inode)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) 	return container_of(inode, struct orangefs_inode_s, vfs_inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) static inline struct orangefs_sb_info_s *ORANGEFS_SB(struct super_block *sb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) 	return (struct orangefs_sb_info_s *) sb->s_fs_info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) /* ino_t descends from "unsigned long", 8 bytes, 64 bits. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) static inline ino_t orangefs_khandle_to_ino(struct orangefs_khandle *khandle)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) 	union {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) 		unsigned char u[8];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) 		__u64 ino;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) 	} ihandle;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) 	ihandle.u[0] = khandle->u[0] ^ khandle->u[4];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) 	ihandle.u[1] = khandle->u[1] ^ khandle->u[5];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) 	ihandle.u[2] = khandle->u[2] ^ khandle->u[6];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) 	ihandle.u[3] = khandle->u[3] ^ khandle->u[7];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) 	ihandle.u[4] = khandle->u[12] ^ khandle->u[8];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) 	ihandle.u[5] = khandle->u[13] ^ khandle->u[9];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) 	ihandle.u[6] = khandle->u[14] ^ khandle->u[10];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) 	ihandle.u[7] = khandle->u[15] ^ khandle->u[11];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) 	return ihandle.ino;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) static inline struct orangefs_khandle *get_khandle_from_ino(struct inode *inode)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) 	return &(ORANGEFS_I(inode)->refn.khandle);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) static inline int is_root_handle(struct inode *inode)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) 	gossip_debug(GOSSIP_DCACHE_DEBUG,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) 		     "%s: root handle: %pU, this handle: %pU:\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) 		     __func__,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) 		     &ORANGEFS_SB(inode->i_sb)->root_khandle,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) 		     get_khandle_from_ino(inode));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) 	if (ORANGEFS_khandle_cmp(&(ORANGEFS_SB(inode->i_sb)->root_khandle),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) 			     get_khandle_from_ino(inode)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) 		return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) 	else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) 		return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) static inline int match_handle(struct orangefs_khandle resp_handle,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) 			       struct inode *inode)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) 	gossip_debug(GOSSIP_DCACHE_DEBUG,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) 		     "%s: one handle: %pU, another handle:%pU:\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) 		     __func__,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) 		     &resp_handle,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) 		     get_khandle_from_ino(inode));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) 	if (ORANGEFS_khandle_cmp(&resp_handle, get_khandle_from_ino(inode)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) 		return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) 	else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) 		return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314)  * defined in orangefs-cache.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) int op_cache_initialize(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) int op_cache_finalize(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) struct orangefs_kernel_op_s *op_alloc(__s32 type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) void orangefs_new_tag(struct orangefs_kernel_op_s *op);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) char *get_opname_string(struct orangefs_kernel_op_s *new_op);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) int orangefs_inode_cache_initialize(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) int orangefs_inode_cache_finalize(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326)  * defined in orangefs-mod.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) void purge_inprogress_ops(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331)  * defined in waitqueue.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) void purge_waiting_ops(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336)  * defined in super.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) extern uint64_t orangefs_features;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) struct dentry *orangefs_mount(struct file_system_type *fst,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) 			   int flags,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) 			   const char *devname,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) 			   void *data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) void orangefs_kill_sb(struct super_block *sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) int orangefs_remount(struct orangefs_sb_info_s *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) int fsid_key_table_initialize(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) void fsid_key_table_finalize(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352)  * defined in inode.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) vm_fault_t orangefs_page_mkwrite(struct vm_fault *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) struct inode *orangefs_new_inode(struct super_block *sb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) 			      struct inode *dir,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) 			      int mode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) 			      dev_t dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) 			      struct orangefs_object_kref *ref);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) int __orangefs_setattr(struct inode *, struct iattr *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) int orangefs_setattr(struct dentry *, struct iattr *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) int orangefs_getattr(const struct path *path, struct kstat *stat,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) 		     u32 request_mask, unsigned int flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) int orangefs_permission(struct inode *inode, int mask);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) int orangefs_update_time(struct inode *, struct timespec64 *, int);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372)  * defined in xattr.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) ssize_t orangefs_listxattr(struct dentry *dentry, char *buffer, size_t size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377)  * defined in namei.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) struct inode *orangefs_iget(struct super_block *sb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) 			 struct orangefs_object_kref *ref);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383)  * defined in devorangefs-req.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) extern uint32_t orangefs_userspace_version;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) int orangefs_dev_init(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) void orangefs_dev_cleanup(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) int is_daemon_in_service(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) bool __is_daemon_in_service(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393)  * defined in file.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) int orangefs_revalidate_mapping(struct inode *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) ssize_t wait_for_direct_io(enum ORANGEFS_io_type, struct inode *, loff_t *,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397)     struct iov_iter *, size_t, loff_t, struct orangefs_write_range *, int *,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398)     struct file *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) ssize_t do_readv_writev(enum ORANGEFS_io_type, struct file *, loff_t *,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400)     struct iov_iter *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403)  * defined in orangefs-utils.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) __s32 fsid_of_op(struct orangefs_kernel_op_s *op);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) ssize_t orangefs_inode_getxattr(struct inode *inode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) 			     const char *name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) 			     void *buffer,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) 			     size_t size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) int orangefs_inode_setxattr(struct inode *inode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) 			 const char *name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) 			 const void *value,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) 			 size_t size,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) 			 int flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) #define ORANGEFS_GETATTR_NEW 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) #define ORANGEFS_GETATTR_SIZE 2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) int orangefs_inode_getattr(struct inode *, int);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) int orangefs_inode_check_changed(struct inode *inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) int orangefs_inode_setattr(struct inode *inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) bool orangefs_cancel_op_in_progress(struct orangefs_kernel_op_s *op);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) int orangefs_normalize_to_errno(__s32 error_code);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) extern struct mutex orangefs_request_mutex;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) extern int op_timeout_secs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) extern int slot_timeout_secs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) extern int orangefs_cache_timeout_msecs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) extern int orangefs_dcache_timeout_msecs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) extern int orangefs_getattr_timeout_msecs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) extern struct list_head orangefs_superblocks;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) extern spinlock_t orangefs_superblocks_lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) extern struct list_head orangefs_request_list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) extern spinlock_t orangefs_request_list_lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) extern wait_queue_head_t orangefs_request_list_waitq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) extern struct list_head *orangefs_htable_ops_in_progress;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) extern spinlock_t orangefs_htable_ops_in_progress_lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) extern int hash_table_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) extern const struct file_operations orangefs_file_operations;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) extern const struct inode_operations orangefs_symlink_inode_operations;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) extern const struct inode_operations orangefs_dir_inode_operations;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) extern const struct file_operations orangefs_dir_operations;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) extern const struct dentry_operations orangefs_dentry_operations;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453)  * misc convenience macros
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) #define ORANGEFS_OP_INTERRUPTIBLE 1   /* service_operation() is interruptible */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) #define ORANGEFS_OP_PRIORITY      2   /* service_operation() is high priority */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) #define ORANGEFS_OP_CANCELLATION  4   /* this is a cancellation */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) #define ORANGEFS_OP_NO_MUTEX      8   /* don't acquire request_mutex */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) #define ORANGEFS_OP_ASYNC         16  /* Queue it, but don't wait */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) #define ORANGEFS_OP_WRITEBACK     32
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) int service_operation(struct orangefs_kernel_op_s *op,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) 		      const char *op_name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) 		      int flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) #define get_interruptible_flag(inode) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) 	((ORANGEFS_SB(inode->i_sb)->flags & ORANGEFS_OPT_INTR) ? \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) 		ORANGEFS_OP_INTERRUPTIBLE : 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) #define fill_default_sys_attrs(sys_attr, type, mode)			\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) do {									\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) 	sys_attr.owner = from_kuid(&init_user_ns, current_fsuid()); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) 	sys_attr.group = from_kgid(&init_user_ns, current_fsgid()); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) 	sys_attr.perms = ORANGEFS_util_translate_mode(mode);		\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) 	sys_attr.mtime = 0;						\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) 	sys_attr.atime = 0;						\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) 	sys_attr.ctime = 0;						\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) 	sys_attr.mask = ORANGEFS_ATTR_SYS_ALL_SETABLE;			\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) } while (0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) static inline void orangefs_set_timeout(struct dentry *dentry)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) 	unsigned long time = jiffies + orangefs_dcache_timeout_msecs*HZ/1000;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) 	dentry->d_fsdata = (void *) time;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) #endif /* __ORANGEFSKERNEL_H */