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2002-08-29  Ulrich Drepper  <drepper@redhat.com>

	* libio/fileops.c (_IO_new_file_fopen): Recognize new mode specifier
	'm' to enable mmap I/O.
	* libio/libio.h (_IO_FILE): Rename _blksize field to _flags2.  The
	former wasn't used (anymore?).
	(_IO_FLAGS2_MMAP): New define.
	* libio/genops.c (_IO_no_init): Initialize _flags2 field.
	* libio/iofopen.c (__fopen_maybe_mmap): Use mmap callbacks only if
	_IO_FLAGS2_MMAP bit is set.
	* libio/iofdopen.c (_IO_new_fdopen): Recognize 'm' mode specifier.
	Enable mmap-using mode only if 'm' was set.
This commit is contained in:
Ulrich Drepper
2002-08-30 07:07:16 +00:00
parent b7fc6d07af
commit dd0ee2e102
5 changed files with 47 additions and 6 deletions
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6
libio/libio.h
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@ -137,6 +137,8 @@
#define _IO_BAD_SEEN 0x4000
#define _IO_USER_LOCK 0x8000
#define _IO_FLAGS2_MMAP 1
/* These are "formatting flags" matching the iostream fmtflags enum values. */
#define _IO_SKIPWS 01
#define _IO_LEFT 02
@ -282,7 +284,11 @@ struct _IO_FILE {
struct _IO_FILE *_chain;
int _fileno;
#if 0
int _blksize;
#else
int _flags2;
#endif
_IO_off_t _old_offset; /* This used to be _offset but it's too small. */
#define __HAVE_COLUMN /* temporary */