-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
- *
+/*
* GPL HEADER START
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
* GPL HEADER END
*/
/*
- * Copyright 2008 Sun Microsystems, Inc. All rights reserved
+ * Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
+ *
+ * Copyright (c) 2011, 2015, Intel Corporation.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
#ifndef __LIBCFS_LIBCFS_H__
#define __LIBCFS_LIBCFS_H__
-#if !__GNUC__
-#define __attribute__(x)
-#endif
+#include <libcfs/types.h>
+#include <libcfs/list.h>
-#if !defined(__WINNT__) && !defined(__KERNEL__)
-#include <libcfs/posix/libcfs.h>
-#elif defined(__linux__)
-#include <libcfs/linux/libcfs.h>
-#elif defined(__APPLE__)
-#include <libcfs/darwin/libcfs.h>
-#elif defined(__WINNT__)
-#include <libcfs/winnt/libcfs.h>
-#else
-#error Unsupported operating system.
-#endif
+#ifdef __KERNEL__
+# include <libcfs/linux/libcfs.h>
+#else /* !__KERNEL__ */
+# include <assert.h>
+# include <ctype.h>
+# include <errno.h>
+# include <fcntl.h>
+# include <limits.h>
+# include <signal.h>
+# include <stdarg.h>
+# include <stdbool.h>
+# include <stddef.h>
+# include <stdint.h>
+# include <stdio.h>
+# include <stdlib.h>
+# include <string.h>
+# include <time.h>
+# include <sys/ioctl.h>
+# include <sys/socket.h>
+# include <sys/stat.h>
+# include <sys/time.h>
+# include <sys/types.h>
+# include <libcfs/user-time.h>
+#endif /* __KERNEL__ */
#include "curproc.h"
-#ifndef offsetof
-# define offsetof(typ,memb) ((long)(long_ptr_t)((char *)&(((typ *)0)->memb)))
-#endif
+#define LIBCFS_VERSION "0.5.0"
#ifndef ARRAY_SIZE
#define ARRAY_SIZE(a) ((sizeof (a)) / (sizeof ((a)[0])))
#endif
+#if !defined(swap)
+#define swap(x,y) do { typeof(x) z = x; x = y; y = z; } while (0)
+#endif
+
#if !defined(container_of)
/* given a pointer @ptr to the field @member embedded into type (usually
* struct) @type, return pointer to the embedding instance of @type. */
return !(val & (val - 1));
}
-#define IS_PO2(val) __is_po2((unsigned long long)(val))
+#define IS_PO2(val) __is_po2((unsigned long long)(val))
+#define PO2_ROUNDUP_TYPED(x, po2, type) (-(-(type)(x) & -(type)(po2)))
+#define LOWEST_BIT_SET(x) ((x) & ~((x) - 1))
-#define LOWEST_BIT_SET(x) ((x) & ~((x) - 1))
+/* Sparse annotations */
+#ifdef __KERNEL__
+# if !defined(__must_hold)
+# ifdef __CHECKER__
+# define __must_hold(x) __attribute__((context(x, 1, 1)))
+# else /* __CHECKER__ */
+# define __must_hold(x)
+# endif /* !__CHECKER__ */
+# endif /* !__must_hold */
+#else /* __KERNEL__ */
+# define __acquires(x)
+# define __releases(x)
+# define __must_hold(x)
+#endif /* !__KERNEL__ */
/*
* Lustre Error Checksum: calculates checksum
#define LERRCHKSUM(hexnum) (((hexnum) & 0xf) ^ ((hexnum) >> 4 & 0xf) ^ \
((hexnum) >> 8 & 0xf))
-
/*
* Some (nomina odiosa sunt) platforms define NULL as naked 0. This confuses
* Lustre RETURN(NULL) macro.
#define NULL ((void *)0)
-#define LUSTRE_SRV_LNET_PID LUSTRE_LNET_PID
-
#ifdef __KERNEL__
-#include <libcfs/list.h>
-
-/* libcfs tcpip */
-int libcfs_ipif_query(char *name, int *up, __u32 *ip, __u32 *mask);
-int libcfs_ipif_enumerate(char ***names);
-void libcfs_ipif_free_enumeration(char **names, int n);
-int libcfs_sock_listen(cfs_socket_t **sockp, __u32 ip, int port, int backlog);
-int libcfs_sock_accept(cfs_socket_t **newsockp, cfs_socket_t *sock);
-void libcfs_sock_abort_accept(cfs_socket_t *sock);
-int libcfs_sock_connect(cfs_socket_t **sockp, int *fatal,
- __u32 local_ip, int local_port,
- __u32 peer_ip, int peer_port);
-int libcfs_sock_setbuf(cfs_socket_t *socket, int txbufsize, int rxbufsize);
-int libcfs_sock_getbuf(cfs_socket_t *socket, int *txbufsize, int *rxbufsize);
-int libcfs_sock_getaddr(cfs_socket_t *socket, int remote, __u32 *ip, int *port);
-int libcfs_sock_write(cfs_socket_t *sock, void *buffer, int nob, int timeout);
-int libcfs_sock_read(cfs_socket_t *sock, void *buffer, int nob, int timeout);
-void libcfs_sock_release(cfs_socket_t *sock);
-
/* libcfs watchdogs */
struct lc_watchdog;
void *data);
/* Enables a watchdog and resets its timer. */
-void lc_watchdog_touch_ms(struct lc_watchdog *lcw, int timeout_ms);
-void lc_watchdog_touch(struct lc_watchdog *lcw);
+void lc_watchdog_touch(struct lc_watchdog *lcw, int timeout);
+#define CFS_GET_TIMEOUT(svc) (max_t(int, obd_timeout, \
+ AT_OFF ? 0 : at_get(&svc->srv_at_estimate)) * \
+ svc->srv_watchdog_factor)
/* Disable a watchdog; touch it to restart it. */
void lc_watchdog_disable(struct lc_watchdog *lcw);
/* Clean up the watchdog */
void lc_watchdog_delete(struct lc_watchdog *lcw);
-/* Dump a debug log */
-void lc_watchdog_dumplog(pid_t pid, void *data);
-
#endif /* __KERNEL__ */
/* need both kernel and user-land acceptor */
#define LNET_ACCEPTOR_MIN_RESERVED_PORT 512
#define LNET_ACCEPTOR_MAX_RESERVED_PORT 1023
-/*
- * libcfs pseudo device operations
- *
- * struct cfs_psdev_t and
- * cfs_psdev_register() and
- * cfs_psdev_deregister() are declared in
- * libcfs/<os>/<os>-prim.h
- *
- * It's just draft now.
- */
-
-struct cfs_psdev_file {
- unsigned long off;
- void *private_data;
- unsigned long reserved1;
- unsigned long reserved2;
-};
-
-struct cfs_psdev_ops {
- int (*p_open)(unsigned long, void *);
- int (*p_close)(unsigned long, void *);
- int (*p_read)(struct cfs_psdev_file *, char *, unsigned long);
- int (*p_write)(struct cfs_psdev_file *, char *, unsigned long);
- int (*p_ioctl)(struct cfs_psdev_file *, unsigned long, void *);
-};
-
-/*
- * Universal memory allocator API
- */
-enum cfs_alloc_flags {
- /* allocation is not allowed to block */
- CFS_ALLOC_ATOMIC = 0x1,
- /* allocation is allowed to block */
- CFS_ALLOC_WAIT = 0x2,
- /* allocation should return zeroed memory */
- CFS_ALLOC_ZERO = 0x4,
- /* allocation is allowed to call file-system code to free/clean
- * memory */
- CFS_ALLOC_FS = 0x8,
- /* allocation is allowed to do io to free/clean memory */
- CFS_ALLOC_IO = 0x10,
- /* don't report allocation failure to the console */
- CFS_ALLOC_NOWARN = 0x20,
- /* standard allocator flag combination */
- CFS_ALLOC_STD = CFS_ALLOC_FS | CFS_ALLOC_IO,
- CFS_ALLOC_USER = CFS_ALLOC_WAIT | CFS_ALLOC_FS | CFS_ALLOC_IO,
-};
-
-/* flags for cfs_page_alloc() in addition to enum cfs_alloc_flags */
-enum cfs_alloc_page_flags {
- /* allow to return page beyond KVM. It has to be mapped into KVM by
- * cfs_page_map(); */
- CFS_ALLOC_HIGH = 0x40,
- CFS_ALLOC_HIGHUSER = CFS_ALLOC_WAIT | CFS_ALLOC_FS | CFS_ALLOC_IO | CFS_ALLOC_HIGH,
-};
+int libcfs_ioctl(unsigned long cmd, void __user *uparam);
/*
* Drop into debugger, if possible. Implementation is provided by platform.
/*
* Defined by platform
*/
-void cfs_daemonize(char *str);
-int cfs_daemonize_ctxt(char *str);
-cfs_sigset_t cfs_get_blocked_sigs(void);
-cfs_sigset_t cfs_block_allsigs(void);
-cfs_sigset_t cfs_block_sigs(cfs_sigset_t bits);
-void cfs_restore_sigs(cfs_sigset_t);
-int cfs_signal_pending(void);
+int unshare_fs_struct(void);
+sigset_t cfs_block_allsigs(void);
+sigset_t cfs_block_sigs(unsigned long sigs);
+sigset_t cfs_block_sigsinv(unsigned long sigs);
+void cfs_restore_sigs(sigset_t);
void cfs_clear_sigpending(void);
-/*
- * XXX Liang:
- * these macros should be removed in the future,
- * we keep them just for keeping libcfs compatible
- * with other branches.
- */
-#define libcfs_daemonize(s) cfs_daemonize(s)
-#define cfs_sigmask_lock(f) do { f= 0; } while (0)
-#define cfs_sigmask_unlock(f) do { f= 0; } while (0)
-
-int convert_server_error(__u64 ecode);
-int convert_client_oflag(int cflag, int *result);
-
-/*
- * Stack-tracing filling.
- */
-
-/*
- * Platform-dependent data-type to hold stack frames.
- */
-struct cfs_stack_trace;
/*
- * Fill @trace with current back-trace.
+ * Random number handling
*/
-void cfs_stack_trace_fill(struct cfs_stack_trace *trace);
-/*
- * Return instruction pointer for frame @frame_no. NULL if @frame_no is
- * invalid.
- */
-void *cfs_stack_trace_frame(struct cfs_stack_trace *trace, int frame_no);
-
-/*
- * Universal open flags.
- */
-#define CFS_O_ACCMODE 0003
-#define CFS_O_CREAT 0100
-#define CFS_O_EXCL 0200
-#define CFS_O_NOCTTY 0400
-#define CFS_O_TRUNC 01000
-#define CFS_O_APPEND 02000
-#define CFS_O_NONBLOCK 04000
-#define CFS_O_NDELAY CFS_O_NONBLOCK
-#define CFS_O_SYNC 010000
-#define CFS_O_ASYNC 020000
-#define CFS_O_DIRECT 040000
-#define CFS_O_LARGEFILE 0100000
-#define CFS_O_DIRECTORY 0200000
-#define CFS_O_NOFOLLOW 0400000
-#define CFS_O_NOATIME 01000000
-
-/* convert local open flags to universal open flags */
-int cfs_oflags2univ(int flags);
-/* convert universal open flags to local open flags */
-int cfs_univ2oflags(int flags);
+/* returns a random 32-bit integer */
+unsigned int cfs_rand(void);
+/* seed the generator */
+void cfs_srand(unsigned int, unsigned int);
+void cfs_get_random_bytes(void *buf, int size);
+#include <libcfs/byteorder.h>
#include <libcfs/libcfs_debug.h>
#include <libcfs/libcfs_private.h>
-#include <libcfs/libcfs_ioctl.h>
-#include <libcfs/libcfs_prim.h>
+#ifdef __KERNEL__
+# include <libcfs/bitmap.h>
+# include <libcfs/libcfs_cpu.h>
+# include <libcfs/libcfs_ioctl.h>
+# include <libcfs/libcfs_prim.h>
+#endif /* __KERNEL__ */
#include <libcfs/libcfs_time.h>
+#ifdef __KERNEL__
+# include <libcfs/libcfs_string.h>
+# include <libcfs/libcfs_workitem.h>
+# include <libcfs/libcfs_hash.h>
+# include <libcfs/libcfs_heap.h>
+# include <libcfs/libcfs_fail.h>
/* container_of depends on "likely" which is defined in libcfs_private.h */
-static inline void *__container_of(void *ptr, unsigned long shift)
+static inline void *__container_of(const void *ptr, unsigned long shift)
{
- if (unlikely(IS_ERR(ptr) || ptr == NULL))
- return ptr;
- else
- return (char *)ptr - shift;
+ if (unlikely(IS_ERR(ptr) || ptr == NULL))
+ return ERR_CAST(ptr);
+ else
+ return (char *)ptr - shift;
}
-#define container_of0(ptr, type, member) \
- ((type *)__container_of((void *)(ptr), offsetof(type, member)))
+#define container_of0(ptr, type, member) \
+ ((type *)__container_of((ptr), offsetof(type, member)))
-#define _LIBCFS_H
+#endif /* __KERNEL__ */
-#endif /* _LIBCFS_H */
+#endif /* _LIBCFS_LIBCFS_H_ */
git://git.whamcloud.com / fs / lustre-release.git / blobdiff