-/*
- * This Cplant(TM) source code is the property of Sandia National
- * Laboratories.
- *
- * This Cplant(TM) source code is copyrighted by Sandia National
- * Laboratories.
- *
- * The redistribution of this Cplant(TM) source code is subject to the
- * terms of the GNU Lesser General Public License
- * (see cit/LGPL or http://www.gnu.org/licenses/lgpl.html)
- *
- * Cplant(TM) Copyright 1998-2006 Sandia Corporation.
- * Under the terms of Contract DE-AC04-94AL85000, there is a non-exclusive
- * license for use of this work by or on behalf of the US Government.
- * Export of this program may require a license from the United States
- * Government.
- */
-
-/*
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * This library 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
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- *
- * Questions or comments about this library should be sent to:
- *
- * Lee Ward
- * Sandia National Laboratories, New Mexico
- * P.O. Box 5800
- * Albuquerque, NM 87185-1110
- *
- * lee@sandia.gov
- */
-
-/*
- * System IO common information.
- */
-
-#if !defined(__IS_UNUSED) && defined(__GNUC__)
-#define __IS_UNUSED __attribute__ ((unused))
-#else
-#define __IS_UNUSED
-#endif
-
-/*
- * Define internal file-offset type and it's maximum value.
- */
-#ifdef _LARGEFILE64_SOURCE
-#define _SYSIO_OFF_T off64_t
-#ifdef LLONG_MAX
-#define _SYSIO_OFF_T_MAX (LLONG_MAX)
-#else
-/*
- * Don't have LLONG_MAX before C99. We'll need to define it ourselves.
- */
-#define _SYSIO_OFF_T_MAX (9223372036854775807LL)
-#endif
-#else
-#define _SYSIO_OFF_T off_t
-#define _SYSIO_OFF_T_MAX LONG_MAX
-#endif
-
-/*
- * Internally, all file status is carried in the 64-bit capable
- * structure.
- */
-#ifdef _LARGEFILE64_SOURCE
-#define intnl_xtvec xtvec64
-#else
-#define intnl_xtvec xtvec
-#endif
-struct intnl_xtvec;
-
-struct iovec;
-
-/*
- * Symbol composition.
- */
-#define _PREPEND_HELPER(p, x) \
- p ## x
-#define PREPEND(p, x) \
- _PREPEND_HELPER(p, x)
-
-/*
- * SYSIO name label macros
- */
-#ifndef SYSIO_INTERFACE_NAME
-#ifdef SYSIO_LABEL_NAMES
-#define SYSIO_INTERFACE_NAME(x) \
- PREPEND(SYSIO_LABEL_NAMES, x)
-#else
-#define SYSIO_INTERFACE_NAME(x) x
-#endif /* SYSIO_LABEL_NAMES */
-#endif /* !SYSIO_INTERFACE_NAME */
-
-/* for debugging */
-#if 0
-#define ASSERT(cond) \
- if (!(cond)) { \
- printf("ASSERTION(" #cond ") failed: " __FILE__ ":" \
- __FUNCTION__ ":%d\n", __LINE__); \
- abort(); \
- }
-
-#define ERROR(fmt, a...) \
- do { \
- printf("ERROR(" __FILE__ ":%d):" fmt, __LINE__, ##a); \
- while(0)
-
-#else
-#define ERROR(fmt) do{}while(0)
-#define ASSERT do{}while(0)
-#endif
-
-/*
- * SYSIO interface frame macros
- *
- * + DISPLAY_BLOCK; Allocates storage on the stack for use by the set of
- * macros.
- * + ENTER; Performs entry point work
- * + RETURN; Returns a value and performs exit point work
- *
- * NB: For RETURN, the arguments are the return value and value for errno.
- * If the value for errno is non-zero then that value, *negated*, is set
- * into errno.
- */
-#define SYSIO_INTERFACE_DISPLAY_BLOCK \
- int _saved_errno;
-#define SYSIO_INTERFACE_ENTER \
- do { \
- _saved_errno = errno; \
- SYSIO_ENTER; \
- } while (0)
-#define SYSIO_INTERFACE_RETURN(rtn, err) \
- do { \
- SYSIO_LEAVE; \
- errno = (err) ? -(err) : _saved_errno; \
- return (rtn); \
- } while(0)
-
-/* Interface enter/leave hook functions */
-#ifdef SYSIO_TRACING
-extern void *_sysio_entry_trace_q;
-extern void *_sysio_exit_trace_q;
-
-extern void *_sysio_register_trace(void *q,
- void (*)(const char *file,
- const char *func,
- int line,
- void *data),
- void *data,
- void (*destructor)(void *data));
-extern void _sysio_remove_trace(void *q, void *p);
-extern void _sysio_run_trace_q(void *q,
- const char *file,
- const char *func,
- int line);
-#define SYSIO_ENTER \
- do { \
- _sysio_run_trace_q(_sysio_entry_trace_q, \
- __FILE__, __func__, __LINE__); \
- } while (0)
-
-
-#define SYSIO_LEAVE \
- do { \
- _sysio_run_trace_q(_sysio_exit_trace_q, \
- __FILE__, __func__, __LINE__); \
- } while (0)
-#else
-#define SYSIO_ENTER \
- do { } while (0)
-#define SYSIO_LEAVE \
- do { } while (0)
-#endif
-
-/* Accounting for IO stats; Read and write character count. */
-#if defined(REDSTORM)
-#define _SYSIO_UPDACCT(w, cc) \
- do { \
- if ((cc) < 0) \
- break; \
- if (w) \
- _add_iostats(0, (size_t )(cc)); \
- else \
- _add_iostats((size_t )(cc), 0); \
- } while(0)
-#else
-#define _SYSIO_UPDACCT(w, cc)
-#endif
-
-extern ssize_t _sysio_validx(const struct intnl_xtvec *xtv, size_t xtvlen,
- const struct iovec *iov, size_t iovlen,
- _SYSIO_OFF_T limit);
-extern ssize_t _sysio_enumerate_extents(const struct intnl_xtvec *xtv,
- size_t xtvlen,
- const struct iovec *iov,
- size_t iovlen,
- ssize_t (*f)(const struct iovec *,
- int,
- _SYSIO_OFF_T,
- ssize_t,
- void *),
- void *arg);
-extern ssize_t _sysio_enumerate_iovec(const struct iovec *iov,
- size_t count,
- _SYSIO_OFF_T off,
- ssize_t limit,
- ssize_t (*f)(void *,
- size_t,
- _SYSIO_OFF_T,
- void *),
- void *arg);
-extern ssize_t _sysio_doio(const struct intnl_xtvec *xtv, size_t xtvlen,
- const struct iovec *iov, size_t iovlen,
- ssize_t (*f)(void *, size_t, _SYSIO_OFF_T, void *),
- void *arg);
git://git.whamcloud.com / fs / lustre-release.git / blobdiff