diff options
Diffstat (limited to 'usr/src/uts/common/sys/uio.h')
| -rw-r--r-- | usr/src/uts/common/sys/uio.h | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/usr/src/uts/common/sys/uio.h b/usr/src/uts/common/sys/uio.h index dd8cbea4fa..b04ca7b8f3 100644 --- a/usr/src/uts/common/sys/uio.h +++ b/usr/src/uts/common/sys/uio.h @@ -23,6 +23,7 @@ * * Copyright 2010 Sun Microsystems, Inc. All rights reserved. * Use is subject to license terms. + * Copyright (c) 2015, Joyent, Inc. All rights reserved. */ /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */ @@ -254,6 +255,45 @@ extern uioasync_t uioasync; extern ssize_t readv(int, const struct iovec *, int); extern ssize_t writev(int, const struct iovec *, int); +/* + * When in the large file compilation environment, + * map preadv/pwritev to their 64 bit offset versions + */ +#if !defined(_LP64) && _FILE_OFFSET_BITS == 64 +#ifdef __PRAGMA_REDEFINE_EXTNAME +#pragma redefine_extname preadv preadv64 +#pragma redefine_extname pwritev pwritev64 +#else /* __PRAGMA_REDEFINE_EXTNAME */ +#define preadv preadv64 +#define pwritev pwritev64 +#endif /* __PRAGMA_REDEFINE_EXTNAME */ +#endif /* !_LP64 && _FILE_OFFSET_BITS == 64 */ + +/* In the LP64 compilation environment, the APIs are already large file */ +#if defined(_LP64) && defined(_LARGEFILE64_SOURCE) +#ifdef __PRAGMA_REDEFINE_EXTNAME +#pragma redefine_extname preadv64 preadv +#pragma redefine_extname pwritev64 pwritev +#else /* __PRAGMA_REDEFINE_EXTNAME */ +#define preadv64 preadv +#define pwritev64 pwritev +#endif /* __PRAGMA_REDEFINE_EXTNAME */ +#endif /* _LP64 && _LARGEFILE64_SOURCE */ + +extern ssize_t preadv(int, const struct iovec *, int, off_t); +extern ssize_t pwritev(int, const struct iovec *, int, off_t); + +/* + * preadv64 and pwritev64 should be defined when: + * - Using the transitional compilation environment, and not + * the large file compilation environment. + */ +#if defined(_LARGEFILE64_SOURCE) && !((_FILE_OFFSET_BITS == 64) && \ + !defined(__PRAGMA_REDEFINE_EXTNAME)) +extern ssize_t preadv64(int, const struct iovec *, int, off64_t); +extern ssize_t pwritev64(int, const struct iovec *, int, off64_t); +#endif /* _LARGEFILE64_SOURCE */ + #endif /* defined(_KERNEL) */ #ifdef __cplusplus |