Commit Graph

26 Commits

Author SHA1 Message Date
David E. O'Brien
333fc21e3c Fix the style of the SCM ID's.
I believe have made all of libc .c's as consistent as possible.
2002-03-22 21:53:29 +00:00
David E. O'Brien
8fb3f3f682 Remove 'register' keyword. 2002-03-21 18:49:23 +00:00
Andrey A. Chernov
924888f977 Move all stdio internal flags processing and setting out of __sread(),
__swrite() and __sseek() to higher level. According to funopen(3) they all
are just wrappers to something like standard read(2), write(2) and
lseek(2), i.e. must not touch stdio internals because they are replaceable
with any other functions knows nothing about stdio internals. See example
of funopen(3) usage in sendmail sources f.e.

NOTE: this is original stdio bug, not result of my range checkin added.
2001-09-02 19:10:10 +00:00
Andrey A. Chernov
6ff604a73a Strict in the POSIX sence, if file position is unspecified after ungetc() at
0, return that we can't specify it, i.e. error with ESPIPE.
(hint from: "Peter S. Housel" <housel@acm.org>)

Back out sinit() addition, not needed after various code simplifications.
2001-09-01 12:13:33 +00:00
Andrey A. Chernov
b13ed88361 If position is underflowed, don't try to hide that fact by recovery, just
return EIO and set __SERR to mark stream as inconsistent.
2001-09-01 11:18:53 +00:00
Andrey A. Chernov
65efd81290 Back out disabling ungetc() at 0, use different solution:
keep negative offset internally, but return 0 externally in ftell*()
I.e. use 0 now as 'unspecified value' per POSIX ungetc() description.
2001-09-01 01:56:54 +00:00
Andrey A. Chernov
598bb4cb30 Add originally missing __sinit() call. 2001-08-31 20:36:19 +00:00
Andrey A. Chernov
c4b2cc78e3 Simplify offset underflow checks even more 2001-08-31 20:17:32 +00:00
Andrey A. Chernov
4db40fd143 Disallow ungetc at offset 0 (to prevent negative offset happens), so simplify
checks in ftell.
2001-08-31 19:50:25 +00:00
Andrey A. Chernov
7cf30ace84 Drop buffer first, _then_ ask for real position 2001-08-31 18:54:44 +00:00
Andrey A. Chernov
2ff678f5bb The same big piece of ftell code repeated in 3 places. Simplify things moving
it into one subfunction instead.
Try to use real offset in strange cases.
2001-08-31 18:23:29 +00:00
Andrey A. Chernov
ee75810413 If file offset is smaller than internal buffer character left count, just drop
internal buffer and trust offset, not return error.
2001-08-31 14:11:14 +00:00
Andrey A. Chernov
57935eeb3d Try to discard some ungetc data in saved internal buffer checks too,
if offset tends to be negative.
2001-08-30 20:49:47 +00:00
Andrey A. Chernov
e54bc118c1 Add more EOVERFLOW checks.
When file offset tends to be negative due to internal and ungetc buffers
additions counted, try to discard some ungetc data first, then return EBADF.
Later one can happens if lseek(fileno(fd),...) called f.e. POSIX says that
ungetc beyond beginning of the file results are undefined, so we can just
discard some of ungetc data in that case.

Don't rely on gcc cast when checking for overflow, use OFF_MAX.

Cosmetique.
2001-08-30 19:54:04 +00:00
Daniel Eischen
d201fe46e3 Remove _THREAD_SAFE and make libc thread-safe by default by
adding (weak definitions to) stubs for some of the pthread
functions.  If the threads library is linked in, the real
pthread functions will pulled in.

Use the following convention for system calls wrapped by the
threads library:
	__sys_foo - actual system call
	_foo - weak definition to __sys_foo
	foo - weak definition to __sys_foo

Change all libc uses of system calls wrapped by the threads
library from foo to _foo.  In order to define the prototypes
for _foo(), we introduce namespace.h and un-namespace.h
(suggested by bde).  All files that need to reference these
system calls, should include namespace.h before any standard
includes, then include un-namespace.h after the standard
includes and before any local includes.  <db.h> is an exception
and shouldn't be included in between namespace.h and
un-namespace.h  namespace.h will define foo to _foo, and
un-namespace.h will undefine foo.

Try to eliminate some of the recursive calls to MT-safe
functions in libc/stdio in preparation for adding a mutex
to FILE.  We have recursive mutexes, but would like to avoid
using them if possible.

Remove uneeded includes of <errno.h> from a few files.

Add $FreeBSD$ to a few files in order to pass commitprep.

Approved by:	-arch
2001-01-24 13:01:12 +00:00
Peter Wemm
7f3dea244c $Id$ -> $FreeBSD$ 1999-08-28 00:22:10 +00:00
Dmitrij Tejblum
7307d07db6 Added functions fseeko() and ftello() (from susv2).
Fixed fgetpos() and fsetpos() for offsets > 2GB.

PR:		8637
Submitted by:	 Dan Nelson <dnelson@emsphone.com> (adjusted by me a little)
1999-02-08 21:32:38 +00:00
John Birrell
ec216c2634 Add FILE locking stubs for libc.
Change the FILE locking to support kernel threads when linked with
libpthread (which you haven't see yet). This requires that libc become
thread-safe and thread-aware, testing __isthreaded before attempting
to do lock/unlock calls. The impact on non-threaded programs is minor.
This change works with libc_r, so it's the best compromise.
1998-04-11 07:40:47 +00:00
Peter Wemm
4f02b68a12 Merge from Lite2 1997-03-11 11:40:40 +00:00
Peter Wemm
7e546392b5 Revert $FreeBSD$ to $Id$ 1997-02-22 15:12:41 +00:00
Jordan K. Hubbard
1130b656e5 Make the long-awaited change from $Id$ to $FreeBSD$
This will make a number of things easier in the future, as well as (finally!)
avoiding the Id-smashing problem which has plagued developers for so long.

Boy, I'm glad we're not using sup anymore.  This update would have been
insane otherwise.
1997-01-14 07:20:47 +00:00
James Raynard
ce51cf0392 Suggested by: Bruce Evans, Jeffrey Hsu, Gary Palmer
Added $Id$'s to files that were lacking them (gpalmer), made some
cosmetic changes to conform to style guidelines (bde) and checked
against NetBSD and Lite2 to remove unnecessary divergences (hsu, bde)

One last code cleanup:-

Removed spurious casts in fseek.c and stdio.c.
Added missing function argument in fwalk.c.
Added missing header include in flags.c and rget.c.
Put in casts where int's were being passed as size_t's.
Put in missing prototypes for static functions.
Changed second args of __sflags() inflags.c and writehook() in vasprintf.c
from char * to const char * to conform to prototypes.

This directory now compiles with no warnings with -Wall under
gcc-2.6.3 and with considerably less warnings than before with the
ultra-pedantic script I used for testing. (Most of the remaining ones
are due to const poisoning).
1996-06-22 10:34:15 +00:00
Bruce Evans
1b5844118e Removed now-bogus casts that were to hide the inconsistency between the
nonstandard normal version and the standard threaded version.

Removed a bogus L in a constant.  fpos_t's aren't longs, and casting to
fpos_t would be verbose.
1996-03-27 18:07:29 +00:00
Paul Richards
880787f0fe Fix incorrect parameter types. 1996-03-24 15:49:34 +00:00
Julian Elischer
f70177e76e Reviewed by: julian and (hsu?)
Submitted by:	 John Birrel(L?)

changes for threadsafe operations
1996-01-22 00:02:33 +00:00
Rodney W. Grimes
58f0484fa2 BSD 4.4 Lite Lib Sources 1994-05-27 05:00:24 +00:00