-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
- */
-#ifndef __LIBCFS_LIBCFS_H__
-#define __LIBCFS_LIBCFS_H__
-
-#if !__GNUC__
-#define __attribute__(x)
-#endif
-
-#if 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
-
-#include "curproc.h"
-
-#ifndef __KERNEL__
-#include <stdio.h>
-#endif
-
-/* Controlled via configure key */
-/* #define LIBCFS_DEBUG */
-
-#ifndef offsetof
-# define offsetof(typ,memb) ((unsigned long)((char *)&(((typ *)0)->memb)))
-#endif
-
-/* cardinality of array */
-#define sizeof_array(a) ((sizeof (a)) / (sizeof ((a)[0])))
-
-#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. */
-#define container_of(ptr, type, member) \
- ((type *)((char *)(ptr)-(unsigned long)(&((type *)0)->member)))
-#endif
-
-#define container_of0(ptr, type, member) \
-({ \
- typeof(ptr) __ptr = (ptr); \
- type *__res; \
- \
- if (unlikely(IS_ERR(__ptr) || __ptr == NULL)) \
- __res = (type *)__ptr; \
- else \
- __res = container_of(__ptr, type, member); \
- __res; \
-})
-
-/*
- * true iff @i is power-of-2
- */
-#define IS_PO2(i) \
-({ \
- typeof(i) __i; \
- \
- __i = (i); \
- !(__i & (__i - 1)); \
-})
-
-#define LOWEST_BIT_SET(x) ((x) & ~((x) - 1))
-
-/*
- * Debugging
- */
-extern unsigned int libcfs_subsystem_debug;
-extern unsigned int libcfs_stack;
-extern unsigned int libcfs_debug;
-extern unsigned int libcfs_printk;
-extern unsigned int libcfs_console_ratelimit;
-extern cfs_duration_t libcfs_console_max_delay;
-extern cfs_duration_t libcfs_console_min_delay;
-extern unsigned int libcfs_console_backoff;
-extern unsigned int libcfs_debug_binary;
-extern char debug_file_path[1024];
-
-int libcfs_debug_mask2str(char *str, int size, int mask, int is_subsys);
-int libcfs_debug_str2mask(int *mask, const char *str, int is_subsys);
-
-/* Has there been an LBUG? */
-extern unsigned int libcfs_catastrophe;
-extern unsigned int libcfs_panic_on_lbug;
-
-/*
- * struct ptldebug_header is defined in libcfs/<os>/libcfs.h
- */
-
-#define PH_FLAG_FIRST_RECORD 1
-
-/* Debugging subsystems (32 bits, non-overlapping) */
-/* keep these in sync with lnet/utils/debug.c and lnet/libcfs/debug.c */
-#define S_UNDEFINED 0x00000001
-#define S_MDC 0x00000002
-#define S_MDS 0x00000004
-#define S_OSC 0x00000008
-#define S_OST 0x00000010
-#define S_CLASS 0x00000020
-#define S_LOG 0x00000040
-#define S_LLITE 0x00000080
-#define S_RPC 0x00000100
-#define S_MGMT 0x00000200
-#define S_LNET 0x00000400
-#define S_LND 0x00000800 /* ALL LNDs */
-#define S_PINGER 0x00001000
-#define S_FILTER 0x00002000
-/* unused */
-#define S_ECHO 0x00008000
-#define S_LDLM 0x00010000
-#define S_LOV 0x00020000
-/* unused */
-/* unused */
-/* unused */
-/* unused */
-/* unused */
-#define S_LMV 0x00800000 /* b_new_cmd */
-/* unused */
-#define S_SEC 0x02000000 /* upcall cache */
-#define S_GSS 0x04000000 /* b_new_cmd */
-/* unused */
-#define S_MGC 0x10000000
-#define S_MGS 0x20000000
-#define S_FID 0x40000000 /* b_new_cmd */
-#define S_FLD 0x80000000 /* b_new_cmd */
-/* keep these in sync with lnet/utils/debug.c and lnet/libcfs/debug.c */
-
-/* Debugging masks (32 bits, non-overlapping) */
-/* keep these in sync with lnet/utils/debug.c and lnet/libcfs/debug.c */
-#define D_TRACE 0x00000001 /* ENTRY/EXIT markers */
-#define D_INODE 0x00000002
-#define D_SUPER 0x00000004
-#define D_EXT2 0x00000008 /* anything from ext2_debug */
-#define D_MALLOC 0x00000010 /* print malloc, free information */
-#define D_CACHE 0x00000020 /* cache-related items */
-#define D_INFO 0x00000040 /* general information */
-#define D_IOCTL 0x00000080 /* ioctl related information */
-#define D_NETERROR 0x00000100 /* network errors */
-#define D_NET 0x00000200 /* network communications */
-#define D_WARNING 0x00000400 /* CWARN(...) == CDEBUG (D_WARNING, ...) */
-#define D_BUFFS 0x00000800
-#define D_OTHER 0x00001000
-#define D_DENTRY 0x00002000
-#define D_NETTRACE 0x00004000
-#define D_PAGE 0x00008000 /* bulk page handling */
-#define D_DLMTRACE 0x00010000
-#define D_ERROR 0x00020000 /* CERROR(...) == CDEBUG (D_ERROR, ...) */
-#define D_EMERG 0x00040000 /* CEMERG(...) == CDEBUG (D_EMERG, ...) */
-#define D_HA 0x00080000 /* recovery and failover */
-#define D_RPCTRACE 0x00100000 /* for distributed debugging */
-#define D_VFSTRACE 0x00200000
-#define D_READA 0x00400000 /* read-ahead */
-#define D_MMAP 0x00800000
-#define D_CONFIG 0x01000000
-#define D_CONSOLE 0x02000000
-#define D_QUOTA 0x04000000
-#define D_SEC 0x08000000
-/* keep these in sync with lnet/{utils,libcfs}/debug.c */
-
-#define D_CANTMASK (D_ERROR | D_EMERG | D_WARNING | D_CONSOLE)
-
-#ifndef DEBUG_SUBSYSTEM
-# define DEBUG_SUBSYSTEM S_UNDEFINED
-#endif
-
-#define CDEBUG_DEFAULT_MAX_DELAY (cfs_time_seconds(600)) /* jiffies */
-#define CDEBUG_DEFAULT_MIN_DELAY ((cfs_time_seconds(1) + 1) / 2) /* jiffies */
-#define CDEBUG_DEFAULT_BACKOFF 2
-typedef struct {
- cfs_time_t cdls_next;
- int cdls_count;
- cfs_duration_t cdls_delay;
-} cfs_debug_limit_state_t;
-
-/* Controlled via configure key */
-/* #define CDEBUG_ENABLED */
-
-#if defined(__KERNEL__) || (defined(__arch_lib__) && !defined(LUSTRE_UTILS))
-
-#ifdef CDEBUG_ENABLED
-#define __CDEBUG(cdls, mask, format, a...) \
-do { \
- CHECK_STACK(); \
- \
- if (((mask) & D_CANTMASK) != 0 || \
- ((libcfs_debug & (mask)) != 0 && \
- (libcfs_subsystem_debug & DEBUG_SUBSYSTEM) != 0)) \
- libcfs_debug_msg(cdls, DEBUG_SUBSYSTEM, mask, \
- __FILE__, __FUNCTION__, __LINE__, \
- format, ## a); \
-} while (0)
-
-#define CDEBUG(mask, format, a...) __CDEBUG(NULL, mask, format, ## a)
-
-#define CDEBUG_LIMIT(mask, format, a...) \
-do { \
- static cfs_debug_limit_state_t cdls; \
- \
- __CDEBUG(&cdls, mask, format, ## a); \
-} while (0)
-
-#else /* CDEBUG_ENABLED */
-#define CDEBUG(mask, format, a...) (void)(0)
-#define CDEBUG_LIMIT(mask, format, a...) (void)(0)
-#warning "CDEBUG IS DISABLED. THIS SHOULD NEVER BE DONE FOR PRODUCTION!"
-#endif
-
-#else
-
-#define CDEBUG(mask, format, a...) \
-do { \
- if (((mask) & D_CANTMASK) != 0) \
- fprintf(stderr, "(%s:%d:%s()) " format, \
- __FILE__, __LINE__, __FUNCTION__, ## a); \
-} while (0)
-
-#define CDEBUG_LIMIT CDEBUG
-
-#endif /* !__KERNEL__ */
-
/*
- * Lustre Error Checksum: calculates checksum
- * of Hex number by XORing each bit.
+ * 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.gnu.org/licenses/gpl-2.0.html
+ *
+ * GPL HEADER END
*/
-#define LERRCHKSUM(hexnum) (((hexnum) & 0xf) ^ ((hexnum) >> 4 & 0xf) ^ \
- ((hexnum) >> 8 & 0xf))
-
-#define CWARN(format, a...) CDEBUG_LIMIT(D_WARNING, format, ## a)
-#define CERROR(format, a...) CDEBUG_LIMIT(D_ERROR, format, ## a)
-#define CEMERG(format, a...) CDEBUG_LIMIT(D_EMERG, format, ## a)
-
-#define LCONSOLE(mask, format, a...) CDEBUG(D_CONSOLE | (mask), format, ## a)
-#define LCONSOLE_INFO(format, a...) CDEBUG_LIMIT(D_CONSOLE, format, ## a)
-#define LCONSOLE_WARN(format, a...) CDEBUG_LIMIT(D_CONSOLE | D_WARNING, format, ## a)
-#define LCONSOLE_ERROR_MSG(errnum, format, a...) CDEBUG_LIMIT(D_CONSOLE | D_ERROR, \
- "%x-%x: " format, errnum, LERRCHKSUM(errnum), ## a)
-#define LCONSOLE_ERROR(format, a...) LCONSOLE_ERROR_MSG(0x00, format, ## a)
-
-#define LCONSOLE_EMERG(format, a...) CDEBUG(D_CONSOLE | D_EMERG, format, ## a)
-
-#ifdef CDEBUG_ENABLED
-
-#define GOTO(label, rc) \
-do { \
- long GOTO__ret = (long)(rc); \
- CDEBUG(D_TRACE,"Process leaving via %s (rc=%lu : %ld : %lx)\n", \
- #label, (unsigned long)GOTO__ret, (signed long)GOTO__ret,\
- (signed long)GOTO__ret); \
- goto label; \
-} while (0)
-#else
-#define GOTO(label, rc) do { ((void)(rc)); goto label; } while (0)
-#endif
-
-/* Controlled via configure key */
-/* #define CDEBUG_ENTRY_EXIT */
-
-#ifdef CDEBUG_ENTRY_EXIT
-
/*
- * if rc == NULL, we need to code as RETURN((void *)NULL), otherwise
- * there will be a warning in osx.
+ * Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Use is subject to license terms.
+ *
+ * Copyright (c) 2011, 2017, Intel Corporation.
*/
-#define RETURN(rc) \
-do { \
- typeof(rc) RETURN__ret = (rc); \
- CDEBUG(D_TRACE, "Process leaving (rc=%lu : %ld : %lx)\n", \
- (long)RETURN__ret, (long)RETURN__ret, (long)RETURN__ret);\
- EXIT_NESTING; \
- return RETURN__ret; \
-} while (0)
-
-#define ENTRY \
-ENTRY_NESTING; \
-do { \
- CDEBUG(D_TRACE, "Process entered\n"); \
-} while (0)
-
-#define EXIT \
-do { \
- CDEBUG(D_TRACE, "Process leaving\n"); \
- EXIT_NESTING; \
-} while(0)
-#else /* !CDEBUG_ENTRY_EXIT */
-
-#define RETURN(rc) return (rc)
-#define ENTRY do { } while (0)
-#define EXIT do { } while (0)
-
-#endif /* !CDEBUG_ENTRY_EXIT */
-
/*
- * Some (nomina odiosa sunt) platforms define NULL as naked 0. This confuses
- * Lustre RETURN(NULL) macro.
+ * This file is part of Lustre, http://www.lustre.org/
+ * Lustre is a trademark of Sun Microsystems, Inc.
*/
-#if defined(NULL)
-#undef NULL
-#endif
-
-#define NULL ((void *)0)
-#define LUSTRE_SRV_LNET_PID LUSTRE_LNET_PID
-
-#ifdef __KERNEL__
-
-#include <libcfs/list.h>
-
-struct libcfs_ioctl_data; /* forward ref */
-
-struct libcfs_ioctl_handler {
- struct list_head item;
- int (*handle_ioctl)(unsigned int cmd, struct libcfs_ioctl_data *data);
-};
-
-#define DECLARE_IOCTL_HANDLER(ident, func) \
- struct libcfs_ioctl_handler ident = { \
- /* .item = */ CFS_LIST_HEAD_INIT(ident.item), \
- /* .handle_ioctl = */ func \
- }
-
-int libcfs_register_ioctl(struct libcfs_ioctl_handler *hand);
-int libcfs_deregister_ioctl(struct libcfs_ioctl_handler *hand);
-
-/* 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;
-
-/* Add a watchdog which fires after "time" milliseconds of delay. You have to
- * touch it once to enable it. */
-struct lc_watchdog *lc_watchdog_add(int time,
- void (*cb)(pid_t pid, void *),
- 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);
+#ifndef __LIBCFS_LIBCFS_H__
+#define __LIBCFS_LIBCFS_H__
-/* Disable a watchdog; touch it to restart it. */
-void lc_watchdog_disable(struct lc_watchdog *lcw);
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/workqueue.h>
+
+#include <libcfs/linux/linux-misc.h>
+#include <libcfs/linux/linux-time.h>
+
+#include <uapi/linux/lnet/libcfs_ioctl.h>
+#include <libcfs/libcfs_debug.h>
+#include <libcfs/libcfs_private.h>
+#include <libcfs/bitmap.h>
+#include <libcfs/libcfs_cpu.h>
+#include <libcfs/libcfs_prim.h>
+#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>
+#include "curproc.h"
-/* Clean up the watchdog */
-void lc_watchdog_delete(struct lc_watchdog *lcw);
+#define LIBCFS_VERSION "0.5.0"
-/* Dump a debug log */
-void lc_watchdog_dumplog(pid_t pid, void *data);
+#define PO2_ROUNDUP_TYPED(x, po2, type) (-(-(type)(x) & -(type)(po2)))
+#define LOWEST_BIT_SET(x) ((x) & ~((x) - 1))
-/* __KERNEL__ */
-#endif
+/* Sparse annotations */
+#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 */
/* 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>/cfs_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 *);
-};
-
-/*
- * generic time manipulation functions.
- */
-
-static inline int cfs_time_after(cfs_time_t t1, cfs_time_t t2)
-{
- return cfs_time_before(t2, t1);
-}
-
-static inline int cfs_time_aftereq(cfs_time_t t1, cfs_time_t t2)
-{
- return cfs_time_beforeq(t2, t1);
-}
-
-/*
- * return seconds since UNIX epoch
- */
-static inline time_t cfs_unix_seconds(void)
-{
- cfs_fs_time_t t;
-
- cfs_fs_time_current(&t);
- return (time_t)cfs_fs_time_sec(&t);
-}
-
-static inline cfs_time_t cfs_time_shift(int seconds)
-{
- return cfs_time_add(cfs_time_current(), cfs_time_seconds(seconds));
-}
-
-static inline long cfs_timeval_sub(struct timeval *large, struct timeval *small,
- struct timeval *result)
-{
- long r = (long) (
- (large->tv_sec - small->tv_sec) * ONE_MILLION +
- (large->tv_usec - small->tv_usec));
- if (result != NULL) {
- result->tv_usec = r % ONE_MILLION;
- result->tv_sec = r / ONE_MILLION;
- }
- return r;
-}
-
-#define CFS_RATELIMIT(seconds) \
-({ \
- /* \
- * XXX nikita: non-portable initializer \
- */ \
- static time_t __next_message = 0; \
- int result; \
- \
- if (cfs_time_after(cfs_time_current(), __next_message)) \
- result = 1; \
- else { \
- __next_message = cfs_time_shift(seconds); \
- result = 0; \
- } \
- result; \
-})
-
-struct libcfs_debug_msg_data {
- cfs_debug_limit_state_t *msg_cdls;
- int msg_subsys;
- const char *msg_file;
- const char *msg_fn;
- int msg_line;
-};
-
-#define DEBUG_MSG_DATA_INIT(cdls, subsystem, file, func, ln ) { \
- .msg_cdls = (cdls), \
- .msg_subsys = (subsystem), \
- .msg_file = (file), \
- .msg_fn = (func), \
- .msg_line = (ln) \
- }
-
-
-extern int libcfs_debug_vmsg2(cfs_debug_limit_state_t *cdls,
- int subsys, int mask,
- const char *file, const char *fn, const int line,
- const char *format1, va_list args,
- const char *format2, ...)
- __attribute__ ((format (printf, 9, 10)));
-
-#define libcfs_debug_vmsg(cdls, subsys, mask, file, fn, line, format, args) \
- libcfs_debug_vmsg2(cdls, subsys, mask, file, fn,line,format,args,NULL,NULL)
-
-#define libcfs_debug_msg(cdls, subsys, mask, file, fn, line, format, a...) \
- libcfs_debug_vmsg2(cdls, subsys, mask, file, fn,line,NULL,NULL,format, ##a)
-
-#define cdebug_va(cdls, mask, file, func, line, fmt, args) do { \
- CHECK_STACK(); \
- \
- if (((mask) & D_CANTMASK) != 0 || \
- ((libcfs_debug & (mask)) != 0 && \
- (libcfs_subsystem_debug & DEBUG_SUBSYSTEM) != 0)) \
- libcfs_debug_vmsg(cdls, DEBUG_SUBSYSTEM, (mask), \
- (file), (func), (line), fmt, args); \
-} while(0);
-
-#define cdebug(cdls, mask, file, func, line, fmt, a...) do { \
- CHECK_STACK(); \
- \
- if (((mask) & D_CANTMASK) != 0 || \
- ((libcfs_debug & (mask)) != 0 && \
- (libcfs_subsystem_debug & DEBUG_SUBSYSTEM) != 0)) \
- libcfs_debug_msg(cdls, DEBUG_SUBSYSTEM, (mask), \
- (file), (func), (line), fmt, ## a); \
-} while(0);
-
-extern void libcfs_assertion_failed(const char *expr, const char *file,
- const char *fn, const int line);
-
-static inline void cfs_slow_warning(cfs_time_t now, int seconds, char *msg)
-{
- if (cfs_time_after(cfs_time_current(),
- cfs_time_add(now, cfs_time_seconds(15))))
- CERROR("slow %s "CFS_TIME_T" sec\n", msg,
- cfs_duration_sec(cfs_time_sub(cfs_time_current(),now)));
-}
-
-/*
- * helper function similar to do_gettimeofday() of Linux kernel
- */
-static inline void cfs_fs_timeval(struct timeval *tv)
+extern struct blocking_notifier_head libcfs_ioctl_list;
+static inline int notifier_from_ioctl_errno(int err)
{
- cfs_fs_time_t time;
-
- cfs_fs_time_current(&time);
- cfs_fs_time_usec(&time, tv);
+ if (err == -EINVAL)
+ return NOTIFY_OK;
+ return notifier_from_errno(err) | NOTIFY_STOP_MASK;
}
/*
- * return valid time-out based on user supplied one. Currently we only check
- * that time-out is not shorted than allowed.
- */
-static inline cfs_duration_t cfs_timeout_cap(cfs_duration_t timeout)
-{
- if (timeout < CFS_TICK)
- timeout = CFS_TICK;
- return timeout;
-}
-
-/*
- * 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,
-};
-
-/*
- * Drop into debugger, if possible. Implementation is provided by platform.
- */
-
-void cfs_enter_debugger(void);
-
-/*
* 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.
+ * Random number handling
*/
-#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);
+/* 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);
-/*
- * Stack-tracing filling.
- */
+int libcfs_ioctl_data_adjust(struct libcfs_ioctl_data *data);
+int libcfs_ioctl(unsigned long cmd, void __user *uparam);
-/*
- * Platform-dependent data-type to hold stack frames.
- */
-struct cfs_stack_trace;
+/* container_of depends on "likely" which is defined in libcfs_private.h */
+static inline void *__container_of(const void *ptr, unsigned long shift)
+{
+ if (unlikely(IS_ERR(ptr) || ptr == NULL))
+ return ERR_CAST(ptr);
+ else
+ return (char *)ptr - shift;
+}
-/*
- * Fill @trace with current back-trace.
- */
-void cfs_stack_trace_fill(struct cfs_stack_trace *trace);
+#define container_of0(ptr, type, member) \
+ ((type *)__container_of((ptr), offsetof(type, member)))
-/*
- * 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);
+extern struct workqueue_struct *cfs_rehash_wq;
-/*
- * 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
+struct lnet_debugfs_symlink_def {
+ const char *name;
+ const char *target;
+};
-/* 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);
+void lnet_insert_debugfs(struct ctl_table *table);
+void lnet_remove_debugfs(struct ctl_table *table);
-#define _LIBCFS_H
+/* helper for sysctl handlers */
+int lprocfs_call_handler(void *data, int write, loff_t *ppos,
+ void __user *buffer, size_t *lenp,
+ int (*handler)(void *data, int write, loff_t pos,
+ void __user *buffer, int len));
-#endif /* _LIBCFS_H */
+#endif /* _LIBCFS_LIBCFS_H_ */
git://git.whamcloud.com / fs / lustre-release.git / blobdiff