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1998-11-05 1998  H.J. Lu  <hjl@gnu.org> 
 
	* libio/iofgets.c (_IO_fgets): Don't report error 
	if something was read in and errno is set to 
	EAGAIN. 
	* libio/iofgets_u.c (fgets_unlocked): Likewise. 
 
1998-11-05  Philip Blundell  <philb@gnu.org> 
 
	* sysdeps/unix/sysv/linux/net/if_packet.h: Don't include kernel 
	header; it defines too much.  Provide a local definition of struct 
	sockaddr_pkt and a comment advising against its use. 
 
1998-11-06 1998  Andreas Schwab  <schwab@issan.cs.uni-dortmund.de> 
 
	* extra-lib.mk: Avoid empty include list. 
 
1998-11-04  Andreas Schwab  <schwab@issan.cs.uni-dortmund.de> 
 
	* extra-lib.mk: Add support for $(lib)-shared-only-routines. 
 
	* elf/Makefile (libdl-routines): Add dlopenold only if doing 
	versioning. 
	(libdl-shared-only-routines): New variable. 
 
1998-11-06  Paul Eggert  <eggert@twinsun.com> 
 
	Don't invoke localtime_r or gmtime_r unless it's the GNU C 
	library's localtime_r and gmtime_r; there are too many buggy 
	implementations of localtime_r and gmtime_r out there, and 
	it's not worth keeping track of all the different bugs. 

	* time/mktime.c (__EXTENSIONS__): Remove. 
	(<unistd.h>): No need to include. 
	* time/strftime.c: Likewise.

	* time/mktime.c (_POSIX_THREAD_SAFE_FUNCTIONS, HAVE_LOCALTIME_R):
	Remove. 
	(my_mktime_localtime_r): Renamed from localtime_r; all uses changed. 
	Base it on localtime unless _LIBC. 

	* time/strftime.c (my_strftime_gmtime_r): Renamed from gmtime_r; 
	all uses changed. 
	(my_strftime_localtime_r): Renamed from localtime_r; all uses changed. 
	Base them on localtime/gmtime if not _LIBC. 

1998-11-07  Ulrich Drepper  <drepper@cygnus.com>

	* sysdeps/generic/isastream.c: Always return 0 unless it is an invalid
	file descriptor.  This makes this function actually usable.
	Proposed by Mark Kettenis <kettenis@phys.uva.nl>.
This commit is contained in:
Ulrich Drepper
1998-11-08 10:40:28 +00:00
parent d76bd17ff9
commit 05f732b361
14 changed files with 204 additions and 140 deletions
Download Patch File Download Diff File Expand all files Collapse all files

94
libio/genops.c
View File

@@ -64,13 +64,14 @@ _IO_link_in (fp)
/* Return minimum _pos markers
Assumes the current get area is the main get area. */
static _IO_size_t _IO_least_marker __P ((_IO_FILE *fp));
static _IO_ssize_t _IO_least_marker __P ((_IO_FILE *fp, char *end_p));
static _IO_size_t
_IO_least_marker (fp)
static _IO_ssize_t
_IO_least_marker (fp, end_p)
_IO_FILE *fp;
char *end_p;
{
_IO_ssize_t least_so_far = fp->_IO_read_end - fp->_IO_read_base;
_IO_ssize_t least_so_far = end_p - fp->_IO_read_base;
struct _IO_marker *mark;
for (mark = fp->_markers; mark != NULL; mark = mark->_next)
if (mark->_pos < least_so_far)
@@ -94,10 +95,8 @@ _IO_switch_to_main_get_area (fp)
tmp = fp->_IO_read_base;
fp->_IO_read_base = fp->_IO_save_base;
fp->_IO_save_base = tmp;
/* Swap _IO_read_ptr and _IO_save_ptr. */
tmp = fp->_IO_read_ptr;
fp->_IO_read_ptr = fp->_IO_save_ptr;
fp->_IO_save_ptr = tmp;
/* Set _IO_read_ptr. */
fp->_IO_read_ptr = fp->_IO_read_base;
}
/* Switch current get area from main get area to (end of) backup area. */
@@ -112,12 +111,11 @@ _IO_switch_to_backup_area (fp)
tmp = fp->_IO_read_end;
fp->_IO_read_end = fp->_IO_save_end;
fp->_IO_save_end = tmp;
/* Swap _gbase and _IO_save_base. */
/* Swap _IO_read_base and _IO_save_base. */
tmp = fp->_IO_read_base;
fp->_IO_read_base = fp->_IO_save_base;
fp->_IO_save_base = tmp;
/* read _IO_read_ptr. */
fp->_IO_save_ptr = fp->_IO_read_ptr;
/* Set _IO_read_ptr. */
fp->_IO_read_ptr = fp->_IO_read_end;
}
@@ -183,26 +181,28 @@ __overflow (f, ch)
return _IO_OVERFLOW (f, ch);
}
static int save_for_backup __P ((_IO_FILE *fp))
static int save_for_backup __P ((_IO_FILE *fp, char *end_p))
#ifdef _LIBC
internal_function
#endif
;
static int
static int
#ifdef _LIBC
internal_function
internal_function
#endif
save_for_backup (fp)
save_for_backup (fp, end_p)
_IO_FILE *fp;
char *end_p;
{
/* Append [_IO_read_base.._IO_read_end] to backup area. */
int least_mark = _IO_least_marker (fp);
/* Append [_IO_read_base..end_p] to backup area. */
_IO_ssize_t least_mark = _IO_least_marker (fp, end_p);
/* needed_size is how much space we need in the backup area. */
int needed_size = (fp->_IO_read_end - fp->_IO_read_base) - least_mark;
int current_Bsize = fp->_IO_save_end - fp->_IO_save_base;
int avail; /* Extra space available for future expansion. */
int delta;
_IO_size_t needed_size = (end_p - fp->_IO_read_base) - least_mark;
/* FIXME: Dubious arithmetic if pointers are NULL */
_IO_size_t current_Bsize = fp->_IO_save_end - fp->_IO_save_base;
_IO_size_t avail; /* Extra space available for future expansion. */
_IO_ssize_t delta;
struct _IO_marker *mark;
if (needed_size > current_Bsize)
{
@@ -218,14 +218,14 @@ save_for_backup (fp)
fp->_IO_save_end + least_mark,
-least_mark),
fp->_IO_read_base,
fp->_IO_read_end - fp->_IO_read_base);
end_p - fp->_IO_read_base);
#else
memcpy (new_buffer + avail,
fp->_IO_save_end + least_mark,
-least_mark);
memcpy (new_buffer + avail - least_mark,
fp->_IO_read_base,
fp->_IO_read_end - fp->_IO_read_base);
end_p - fp->_IO_read_base);
#endif
}
else
@@ -247,17 +247,16 @@ save_for_backup (fp)
-least_mark);
memcpy (fp->_IO_save_base + avail - least_mark,
fp->_IO_read_base,
fp->_IO_read_end - fp->_IO_read_base);
end_p - fp->_IO_read_base);
}
else if (needed_size > 0)
memcpy (fp->_IO_save_base + avail,
fp->_IO_read_base + least_mark,
needed_size);
}
/* FIXME: Dubious arithmetic if pointers are NULL */
fp->_IO_backup_base = fp->_IO_save_base + avail;
/* Adjust all the streammarkers. */
delta = fp->_IO_read_end - fp->_IO_read_base;
delta = end_p - fp->_IO_read_base;
for (mark = fp->_markers; mark != NULL; mark = mark->_next)
mark->_pos -= delta;
return 0;
@@ -280,7 +279,7 @@ __underflow (fp)
}
if (_IO_have_markers (fp))
{
if (save_for_backup (fp))
if (save_for_backup (fp, fp->_IO_read_end))
return EOF;
}
else if (_IO_have_backup (fp))
@@ -305,7 +304,7 @@ __uflow (fp)
}
if (_IO_have_markers (fp))
{
if (save_for_backup (fp))
if (save_for_backup (fp, fp->_IO_read_end))
return EOF;
}
else if (_IO_have_backup (fp))
@@ -817,10 +816,7 @@ _IO_seekmark (fp, mark, delta)
else
{
if (!_IO_in_backup (fp))
{
fp->_IO_read_ptr = fp->_IO_read_base;
_IO_switch_to_backup_area (fp);
}
_IO_switch_to_backup_area (fp);
fp->_IO_read_ptr = fp->_IO_read_end + mark->_pos;
}
return 0;
@@ -880,20 +876,28 @@ _IO_default_pbackfail (fp, c)
else
{
/* Need to handle a filebuf in write mode (switch to read mode). FIXME!*/
if (_IO_have_backup (fp) && !_IO_in_backup (fp))
_IO_switch_to_backup_area (fp);
if (!_IO_have_backup (fp))
if (!_IO_in_backup (fp))
{
/* No backup buffer: allocate one. */
/* Use nshort buffer, if unused? (probably not) FIXME */
int backup_size = 128;
char *bbuf = (char *) malloc (backup_size);
if (bbuf == NULL)
return EOF;
fp->_IO_save_base = bbuf;
fp->_IO_save_end = fp->_IO_save_base + backup_size;
fp->_IO_backup_base = fp->_IO_save_end;
/* We need to keep the invariant that the main get area
logically follows the backup area. */
if (fp->_IO_read_ptr > fp->_IO_read_base && _IO_have_backup (fp))
{
if (save_for_backup (fp, fp->_IO_read_ptr))
return EOF;
}
else if (!_IO_have_backup (fp))
{
/* No backup buffer: allocate one. */
/* Use nshort buffer, if unused? (probably not) FIXME */
int backup_size = 128;
char *bbuf = (char *) malloc (backup_size);
if (bbuf == NULL)
return EOF;
fp->_IO_save_base = bbuf;
fp->_IO_save_end = fp->_IO_save_base + backup_size;
fp->_IO_backup_base = fp->_IO_save_end;
}
fp->_IO_read_base = fp->_IO_read_ptr;
_IO_switch_to_backup_area (fp);
}
else if (fp->_IO_read_ptr <= fp->_IO_read_base)