/* * GPL HEADER START * * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 only, * as published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License version 2 for more details (a copy is included * in the LICENSE file that accompanied this code). * * You should have received a copy of the GNU General Public License * version 2 along with this program; If not, see * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf * * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, * CA 95054 USA or visit www.sun.com if you need additional information or * have any questions. * * GPL HEADER END */ /* * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved. * Use is subject to license terms. * * Copyright (c) 2011, 2013, Intel Corporation. */ /* * This file is part of Lustre, http://www.lustre.org/ * Lustre is a trademark of Sun Microsystems, Inc. * * lustre/include/liblustre.h * * User-space Lustre headers. */ #ifndef LIBLUSTRE_H__ #define LIBLUSTRE_H__ /** \defgroup liblustre liblustre * * @{ */ #include #include #ifdef __KERNEL__ #error Kernel files should not #include #endif #include #include /* definitions for liblustre */ #ifdef __CYGWIN__ #define loff_t long long #define ERESTART 2001 typedef unsigned short cfs_umode_t; #endif #ifndef page_private #define page_private(page) ((page)->private) #define set_page_private(page, v) ((page)->private = (v)) #endif /* * The inter_module_get implementation is specific to liblustre, so this needs * to stay here for now. */ static inline void inter_module_put(void *a) { return; } void *inter_module_get(char *arg); /* bits ops */ /* a long can be more than 32 bits, so use BITS_PER_LONG * to allow the compiler to adjust the bit shifting accordingly */ static __inline__ int ext2_set_bit(int nr, void *addr) { #ifdef __BIG_ENDIAN return set_bit((nr ^ ((BITS_PER_LONG-1) & ~0x7)), addr); #else return set_bit(nr, addr); #endif } static inline int ext2_clear_bit(int nr, void *addr) { #ifdef __BIG_ENDIAN return clear_bit((nr ^ ((BITS_PER_LONG-1) & ~0x7)), addr); #else return clear_bit(nr, addr); #endif } static __inline__ int ext2_test_bit(int nr, void *addr) { #ifdef __BIG_ENDIAN __const__ unsigned char *tmp = (__const__ unsigned char *) addr; return (tmp[nr >> 3] >> (nr & 7)) & 1; #else return test_bit(nr, addr); #endif } /* module initialization */ extern int init_obdclass(void); extern int ptlrpc_init(void); extern int ldlm_init(void); extern int osc_init(void); extern int lov_init(void); extern int mdc_init(void); extern int lmv_init(void); extern int mgc_init(void); extern int echo_client_init(void); /* general stuff */ #ifndef min #define min(x,y) ((x)<(y) ? (x) : (y)) #endif #ifndef max #define max(x,y) ((x)>(y) ? (x) : (y)) #endif #ifndef min_t #define min_t(type,x,y) \ ({ type __x = (x); type __y = (y); __x < __y ? __x: __y; }) #endif #ifndef max_t #define max_t(type,x,y) \ ({ type __x = (x); type __y = (y); __x > __y ? __x: __y; }) #endif #define simple_strtol strtol /* registering symbols */ #ifndef ERESTARTSYS #define ERESTARTSYS ERESTART #endif #define CFS_HZ 1 /* random */ void cfs_get_random_bytes(void *ptr, int size); /* memory */ /* memory size: used for some client tunables */ #define cfs_num_physpages (256 * 1024) /* 1GB */ #define CFS_NUM_CACHEPAGES cfs_num_physpages /* VFS stuff */ #define ATTR_MODE 0x0001 #define ATTR_UID 0x0002 #define ATTR_GID 0x0004 #define ATTR_SIZE 0x0008 #define ATTR_ATIME 0x0010 #define ATTR_MTIME 0x0020 #define ATTR_CTIME 0x0040 #define ATTR_ATIME_SET 0x0080 #define ATTR_MTIME_SET 0x0100 #define ATTR_FORCE 0x0200 /* Not a change, but a change it */ #define ATTR_ATTR_FLAG 0x0400 #define ATTR_RAW 0x0800 /* file system, not vfs will massage attrs */ #define ATTR_FROM_OPEN 0x1000 /* called from open path, ie O_TRUNC */ #define ATTR_CTIME_SET 0x2000 #define ATTR_BLOCKS 0x4000 #define ATTR_KILL_SUID 0 #define ATTR_KILL_SGID 0 #define ATTR_FILE 0 struct iattr { unsigned int ia_valid; cfs_umode_t ia_mode; uid_t ia_uid; gid_t ia_gid; loff_t ia_size; time_t ia_atime; time_t ia_mtime; time_t ia_ctime; unsigned int ia_attr_flags; }; /* defined in kernel header include/linux/namei.h */ #define INTENT_MAGIC 0x19620323 struct lustre_intent_data { int it_disposition; int it_status; __u64 it_lock_handle; int it_lock_mode; int it_remote_lock_mode; __u64 it_remote_lock_handle; void *it_data; unsigned int it_lock_set:1; }; struct lookup_intent { int it_magic; void (*it_op_release)(struct lookup_intent *); int it_op; int it_flags; int it_create_mode; union { struct lustre_intent_data lustre; } d; }; static inline void intent_init(struct lookup_intent *it, int op, int flags) { memset(it, 0, sizeof(*it)); it->it_magic = INTENT_MAGIC; it->it_op = op; it->it_flags = flags; } struct dentry { int d_count; }; struct vfsmount { void *pwd; }; struct signal { int signal; }; #undef LL_TASK_CL_ENV #define LL_TASK_CL_ENV cl_env struct task_struct { int state; struct signal pending; char comm[32]; int uid; int gid; int pid; int fsuid; int fsgid; int max_groups; int ngroups; gid_t *groups; void *cl_env; __u32 cap_effective; }; typedef struct task_struct cfs_task_t; #define cfs_current() current #define cfs_curproc_pid() (current->pid) #define cfs_curproc_comm() (current->comm) #define cfs_curproc_fsuid() (current->fsuid) #define cfs_curproc_fsgid() (current->fsgid) #define cfs_curproc_umask() ({ mode_t mask = umask(0); umask(mask); mask; }) extern struct task_struct *current; int cfs_curproc_is_in_groups(gid_t gid); #define cfs_set_current_state(foo) do { current->state = foo; } while (0) #define cfs_wait_event_interruptible(wq, condition, ret) \ { \ struct l_wait_info lwi; \ int timeout = 100000000;/* for ever */ \ int ret; \ \ lwi = LWI_TIMEOUT(timeout, NULL, NULL); \ ret = l_wait_event(NULL, condition, &lwi); \ \ ret; \ } #define daemonize(l) do {} while (0) #define sigfillset(l) do {} while (0) #define recalc_sigpending(l) do {} while (0) #define USERMODEHELPER(path, argv, envp) (0) #define SIGNAL_MASK_ASSERT() #define CFS_KERN_INFO #if CFS_HZ != 1 #error "liblustre's jiffies currently expects HZ to be 1" #endif #define jiffies \ ({ \ unsigned long _ret = 0; \ struct timeval tv; \ if (gettimeofday(&tv, NULL) == 0) \ _ret = tv.tv_sec; \ _ret; \ }) #define get_jiffies_64() (__u64)jiffies #ifndef likely #define likely(exp) (exp) #endif #ifndef unlikely #define unlikely(exp) (exp) #endif #define cfs_might_sleep() #define might_sleep_if(c) #define smp_mb() /* FIXME sys/capability will finally included linux/fs.h thus * cause numerous trouble on x86-64. as temporary solution for * build broken at Cray, we copy definition we need from capability.h * FIXME */ struct _cap_struct; typedef struct _cap_struct *cap_t; typedef int cap_value_t; typedef enum { CAP_EFFECTIVE=0, CAP_PERMITTED=1, CAP_INHERITABLE=2 } cap_flag_t; typedef enum { CAP_CLEAR=0, CAP_SET=1 } cap_flag_value_t; cap_t cap_get_proc(void); int cap_get_flag(cap_t, cap_value_t, cap_flag_t, cap_flag_value_t *); static inline void libcfs_run_lbug_upcall(char *file, const char *fn, const int l){} struct liblustre_wait_callback { cfs_list_t llwc_list; const char *llwc_name; int (*llwc_fn)(void *arg); void *llwc_arg; }; void *liblustre_register_wait_callback(const char *name, int (*fn)(void *arg), void *arg); void liblustre_deregister_wait_callback(void *notifier); int liblustre_wait_event(int timeout); void *liblustre_register_idle_callback(const char *name, int (*fn)(void *arg), void *arg); void liblustre_deregister_idle_callback(void *notifier); void liblustre_wait_idle(void); /* flock related */ struct nfs_lock_info { __u32 state; __u32 flags; void *host; }; struct file_lock { struct file_lock *fl_next; /* singly linked list for this inode */ cfs_list_t fl_link; /* doubly linked list of all locks */ cfs_list_t fl_block; /* circular list of blocked processes */ void *fl_owner; unsigned int fl_pid; cfs_waitq_t fl_wait; struct file *fl_file; unsigned char fl_flags; unsigned char fl_type; loff_t fl_start; loff_t fl_end; void (*fl_notify)(struct file_lock *); /* unblock callback */ void (*fl_insert)(struct file_lock *); /* lock insertion callback */ void (*fl_remove)(struct file_lock *); /* lock removal callback */ void *fl_fasync; /* for lease break notifications */ unsigned long fl_break_time; /* for nonblocking lease breaks */ union { struct nfs_lock_info nfs_fl; } fl_u; }; #define flock_type(fl) ((fl)->fl_type) #define flock_set_type(fl, type) do { (fl)->fl_type = (type); } while (0) #define flock_pid(fl) ((fl)->fl_pid) #define flock_set_pid(fl, pid) do { (fl)->fl_pid = (pid); } while (0) #define flock_start(fl) ((fl)->fl_start) #define flock_set_start(fl, st) do { (fl)->fl_start = (st); } while (0) #define flock_end(fl) ((fl)->fl_end) #define flock_set_end(fl, end) do { (fl)->fl_end = (end); } while (0) #ifndef OFFSET_MAX #define INT_LIMIT(x) (~((x)1 << (sizeof(x)*8 - 1))) #define OFFSET_MAX INT_LIMIT(loff_t) #endif #define i_atime i_stbuf.st_atime #define i_mtime i_stbuf.st_mtime #define i_ctime i_stbuf.st_ctime /* use i_size_read() i_size_write() to access i_stbuf.st_size */ #define i_blocks i_stbuf.st_blocks #define i_blksize i_stbuf.st_blksize #define i_mode i_stbuf.st_mode #define i_uid i_stbuf.st_uid #define i_gid i_stbuf.st_gid /* XXX: defined in kernel */ #define FL_POSIX 1 #define FL_SLEEP 128 /* quota */ #define QUOTA_OK 0 #define NO_QUOTA 1 /* ACL */ typedef struct { __u16 e_tag; __u16 e_perm; __u32 e_id; } posix_acl_xattr_entry; struct posix_acl { cfs_atomic_t a_refcount; unsigned int a_count; posix_acl_xattr_entry a_entries[0]; }; typedef struct { __u32 a_version; posix_acl_xattr_entry a_entries[0]; } posix_acl_xattr_header; static inline size_t posix_acl_xattr_size(int count) { return sizeof(posix_acl_xattr_header) + count * sizeof(posix_acl_xattr_entry); } static inline struct posix_acl * posix_acl_from_xattr(const void *value, size_t size) { return NULL; } static inline int posix_acl_valid(const struct posix_acl *acl) { return 0; } static inline void posix_acl_release(struct posix_acl *acl) { } #if defined(LIBLUSTRE_POSIX_ACL) && !defined(CONFIG_FS_POSIX_ACL) # define CONFIG_FS_POSIX_ACL 1 #endif #ifndef ENOTSUPP #define ENOTSUPP ENOTSUP #endif typedef int mm_segment_t; enum { KERNEL_DS, USER_DS }; static inline mm_segment_t get_fs(void) { return USER_DS; } static inline void set_fs(mm_segment_t seg) { } #define S_IRWXUGO (S_IRWXU|S_IRWXG|S_IRWXO) #define S_IALLUGO (S_ISUID|S_ISGID|S_ISVTX|S_IRWXUGO) struct inode *igrab(struct inode *inode); void iput(struct inode *inode); #include #include #include #include #include #include /** @} liblustre */ #endif