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451 Commits

Author SHA1 Message Date
Tim J. Robbins
37d2356335 Write the message to stderr, not file descriptor 2, so that perror() 
writes to the correct stream if stderr has been redirected with freopen().
 2002-12-19 09:53:26 +00:00
Tim J. Robbins
a207a8e3f1 Use strerror_r() to format the error message so that strerror()'s static 
buffer does not get clobbered.

ISO/IEC 9899:1999 7.21.6.2 3:
"The implementation shall behave as if no library function calls the
strerror function."
 2002-12-19 09:50:10 +00:00
Ruslan Ermilov
2efeeba554 mdoc(7) police: "The .Fa argument.". 2002-12-19 09:40:28 +00:00
Ruslan Ermilov
5c564bae0a mdoc(7) police: Fixed abuses of the .Ar and .Em macros. 2002-12-18 13:33:04 +00:00
Ruslan Ermilov
1fae73b137 mdoc(7) police: "The .Fn function". 2002-12-18 12:45:11 +00:00
Ruslan Ermilov
a9a15f3ea4 mdoc(7) police: tiny nits. 
Approved by:	re
 2002-12-09 14:11:37 +00:00
Ruslan Ermilov
ae82896268 Consistently mark std(in|out|err) with .Dv, because that's how they 
are marked up in stdio(3), and because they are defined expressions
of type "FILE *".

Approved by:	re
 2002-12-04 18:57:46 +00:00
Ruslan Ermilov
898f520da8 mdoc(7) police: markup overhaul. 
Approved by:	re
 2002-12-04 17:49:15 +00:00
Ruslan Ermilov
1798791d24 mdoc(7) police: formatting nits. 
Approved by:	re
 2002-11-29 15:57:50 +00:00
Ruslan Ermilov
c51d717f0c libc_r wasn't so tied to libc for 22 months. 2002-11-18 09:50:57 +00:00
Warner Losh
cf04ed1bdf bde points out that the LIBC_MAJOR macro doesn't exist and requests 
that we not use it here.  In its place I've put a comment about the
current state of play.

Submitted by: bde
 2002-11-14 14:06:14 +00:00
Warner Losh
c906b66373 Restore Peter's version of static __sF. There's too much pain for it 
to be static for 5.0.  I may remove this for 5.1 or 5.2.  No more
binaries or libarires will be generated with __sF starting as of
yesterday.  Originally the plan had been to eliminate this for 5.0,
but we didn't get the __std{in,out,err}p changes merged into -stable
until yesterday (rather than in September 2001 like it should have
been).  Given that didn't happen on time, we can't do the other part
of the scheme now.

# Please do not change this without talking to me first.
 2002-11-10 08:44:38 +00:00
Alfred Perlstein
ac1cc6ee11 Backout "compatibility hack" for __sF. 
Requested by: Steve Kargl <sgk@troutmask.apl.washington.edu> (submitter)
 2002-11-04 03:23:56 +00:00
Alfred Perlstein
0fc25b925d Provide a hook to make __sF visible outside of libc for commercial apps 
if WANT_COMPAT4_STDIO is defined when compiling libc.

Submitted by: Steve Kargl <sgk@troutmask.apl.washington.edu>
 2002-11-02 19:47:53 +00:00
Tim J. Robbins
14ffdae94d No need to include floatio.h here: vfscanf() no longer uses anything 
it defines.
 2002-11-01 05:13:01 +00:00
Alfred Perlstein
c313cb2abf Make __sF static. This can not be allowed to exist in 5.x. 2002-10-31 01:54:27 +00:00
Tim J. Robbins
ae95ea1a26 Cross-reference putc(3). 2002-10-28 10:35:18 +00:00
Tim J. Robbins
79db40061f The ORIENTLOCK macro is no longer needed since all functions use 
FLOCKFILE/FUNLOCKFILE explicitly.
 2002-10-25 07:01:56 +00:00
Tim J. Robbins
9619813de9 Cross-reference fmtcheck(3). 2002-10-20 03:56:37 +00:00
Peter Wemm
d7dd6ae7ec Give in on the __sF stuff. I have a better fix in mind that is future 
proof, but this should buy me some time for now.
 2002-10-19 22:28:07 +00:00
Tim J. Robbins
118bb75e02 Indent code example with one tab, not two, for consistency with the rest. 2002-10-19 13:48:45 +00:00
Tim J. Robbins
0145ba86d1 Fix off-by-one error when pushing back a multibyte sequence in 
wide character class (%l[) and wide string (%ls) conversions.
 2002-10-17 13:04:00 +00:00
Tim J. Robbins
63b01047f4 Make part of the previous change clearer; check flags for SUPPRESS directly 
instead of checking whether we're using a temporary buffer.
 2002-10-17 12:06:29 +00:00
Tim J. Robbins
bd25c6f476 The field width for single-byte string conversions (%c, %s, %[) is the 
maximum number of bytes that may be stored in the array, not the maximum
number of wide characters to read. The wording of the standard unfortunately
does not make this clear.
 2002-10-17 12:02:36 +00:00
Tim J. Robbins
35739e072b Count field width correctly for suppressed multibyte fields (%*lc, 
%*ls, %*l[).
 2002-10-16 14:07:08 +00:00
Tim J. Robbins
6180233fd8 Set the error bit on the stream if an encoding error occurs. Improve 
handling of multibyte sequences representing null wide characters.
 2002-10-16 12:09:43 +00:00
Tim J. Robbins
927ecbf313 Add support for the XSI %C and %S formats, which are the same as %lc 
and %ls.
 2002-10-16 03:55:53 +00:00
Tim J. Robbins
af1c9c0e4d Use a weak reference instead of a macro to make vfscanf an alias 
for __vfscanf.
 2002-10-14 11:18:21 +00:00
Kris Kennaway
61bdf123c3 Ignore TMPDIR if the application is setugid. 
MFC after:	2 weeks
 2002-10-13 11:22:16 +00:00
Mike Barcroft
54e4e385de Add restrict type-qualifier. 2002-10-12 16:13:41 +00:00
Tim J. Robbins
419c442678 Describe the restrictions on seeking on wide character streams, and also 
point out that fseek() clears the ungetwc() buffer.
 2002-10-12 09:22:25 +00:00
Peter Wemm
74a4ba21f7 Zap the early-adopter transition aid before we get into serious 
5.0-R territory, as threatened.  This only affects antique 5.0
systems that have not had a 'make world' done for well over a year.
 2002-10-11 22:38:17 +00:00
Tim J. Robbins
ce04c11001 Cross-reference between byte and wide-character stdio functions. Remove 
references to fputwc() and fgetwc() being macros while I'm at it.
 2002-10-10 04:12:40 +00:00
Tim J. Robbins
3619568a64 Remove masking macros for getwc(), putwc(), putwchar() and getwchar(). 
Although there was nothing wrong with getwc() and putwc(), getwchar()
and putwchar() assumed that <stdio.h> had been included before <wchar.h>,
which is not allowed by the standard.
 2002-09-28 07:43:44 +00:00
Tim J. Robbins
27a29543f3 Back out previous, free the buffer when __vfprintf() fails and don't bother 
trying to shrink the buffer with realloc() before returning it.
 2002-09-26 13:11:24 +00:00
Tim J. Robbins
344141d1fd Back out previous and solve the problems a different way: move va_start/ 
va_end closer to the __vfprintf() call, free the buffer when __vfprintf()
fails and don't bother trying to shrink the buffer with realloc() before
returning it.

Submitted by:	bde
 2002-09-26 13:09:48 +00:00
Tim J. Robbins
23b6f7902d Correctly handle the case where __vfwprintf() fails because it runs out 
of memory.
 2002-09-26 08:26:16 +00:00
Tim J. Robbins
3383deca89 Sync with OpenBSD: avoid memory leak when __vfprintf() fails because it 
runs out of memory, always call va_end.
 2002-09-26 07:55:18 +00:00
Tim J. Robbins
38b5abad06 Add cross-references between wide character and single-byte character 
versions of printf() and scanf().
 2002-09-24 09:22:47 +00:00
Tim J. Robbins
89265cb899 Remove an unneeded call to _sfrefill() that was missed in the conversion 
from vfscanf() to vfwscanf(). It doesn't hurt to have it there, but it's
redundant since __fgetwc() will refill the buffer if it needs to.
 2002-09-24 09:18:32 +00:00
Tim J. Robbins
d07090a880 Use the new va_copy macro to copy variable argument lists instead of 
assignment. This is needed on powerpc but is also more correct for the
other ports.

Submitted by:	grehan
Tested on:	alpha, i386, sparc64
 2002-09-24 00:47:27 +00:00
Tim J. Robbins
1f4ff8506a Add implementations of wscanf() and related functions: fwscanf(), swscanf(), 
vfwscanf(), vswscanf(), vwscanf(). As the name suggests, these are wide-
character versions of the scanf() family of functions.
 2002-09-23 12:40:06 +00:00
Tim J. Robbins
4712aa3b59 Implement the %lc, %ls and %[ conversions, which read sequences of wide 
characters, non-whitespace wide character strings and wide character
strings in a scanset.
 2002-09-23 11:35:50 +00:00
Tim J. Robbins
adc106840c The character argument for __ungetwc() should be wint_t instead of wchar_t. 2002-09-23 11:31:18 +00:00
Tim J. Robbins
5f147b57ac Add an unlocked version of ungetwc(), __ungetwc(), that __vfwscanf() 
will need to use.
 2002-09-22 05:59:00 +00:00
Tim J. Robbins
0e2e10070d Delete stray reference to vsnprintf(). 2002-09-21 14:25:58 +00:00
Tim J. Robbins
c5604d0a50 Add implementations of the wprintf() family of functions, which perform 
formatted wide-character output.
 2002-09-21 13:00:30 +00:00
Tim J. Robbins
7591ae56ae Lock the file once per call and use the unlocked fgetwc()/fputwc() variants. 2002-09-20 13:25:40 +00:00
Tim J. Robbins
9260341650 Lock and unlock the file once per call and use the unlocked version of 
ungetc() instead of having ungetc() recurse on the lock.
 2002-09-20 13:23:26 +00:00
Tim J. Robbins
8f030a44b8 Introduce unlocked versions of fputwc() and fgetwc() called __fputwc() 
and __fgetwc() which can be used when we know the file is locked.
 2002-09-20 13:20:41 +00:00
Tim J. Robbins
b9aac30810 Implement the %ls and %lc conversions for printing wide character strings 
and wide characters. These were already documented in the manual page,
with an entry mentioning that they were not implemented yet. The XSI
%S and %C synoyms have not been added.
 2002-09-19 12:50:28 +00:00
Tim J. Robbins
0b7bc80226 Optimise the common case where no special encoding is in use (LC_CTYPE is "C" 
or "POSIX", other European locales). Use __sgetc() and __sputc() where
possible to avoid a wasteful lock and unlock for each byte and to avoid
function call overhead.
 2002-09-18 12:17:28 +00:00
Tim J. Robbins
bddc6280f2 Logic error in previous: don't exit the loop when an incomplete multibyte 
sequence is detected.
 2002-09-18 10:21:41 +00:00
Tim J. Robbins
24990dfad0 Reimplement the functionality of fgetrune(), fputrune(), and fungetrune() 
here in terms of mbrtowc(), wcrtomb(), and the single-byte I/O functions.
The rune I/O functions are about to become deprecated in favour of the
ones provided by ISO C90 Amd. 1 and C99.
 2002-09-18 05:58:11 +00:00
Maxim Konovalov
48eaac247f Fix vsnprintf(3) memory leak for size == 0. 
PR:             bin/36175
Obtained from:  OpenBSD
Reviewed by:    silence on -audit
MFC after:      5 days
 2002-09-17 11:28:24 +00:00
Tim J. Robbins
4d783ded07 Convert eight space indents to tabs in the "*" format handling code. 2002-09-16 12:07:13 +00:00
Tim J. Robbins
58d38e2520 Style: One space between "restrict" qualifier and "*". 2002-09-06 11:24:06 +00:00
Jens Schweikhardt
3dd657600a Print a '-' sign for negative zero. Tested with 
#include <stdio.h>
	int main(void)
	{
		printf("%+f\n", -0.0);
		printf("%+f\n", +0.0);
		printf("%+f\n",  0.0);
		return 0;
	}

to output
-0.000000
+0.000000
+0.000000

PR:		bin/41823
Submitted by:	GOTO Kentaro <gotoken@notwork.org>
Liked by:	bde
MFC after:	3 weeks
 2002-08-27 20:11:08 +00:00
Mike Barcroft
abbd890233 o Merge <machine/ansi.h> and <machine/types.h> into a new header 
called <machine/_types.h>.
o <machine/ansi.h> will continue to live so it can define MD clock
  macros, which are only MD because of gratuitous differences between
  architectures.
o Change all headers to make use of this.  This mainly involves
  changing:
    #ifdef _BSD_FOO_T_
    typedef	_BSD_FOO_T_	foo_t;
    #undef _BSD_FOO_T_
    #endif
  to:
    #ifndef _FOO_T_DECLARED
    typedef	__foo_t	foo_t;
    #define	_FOO_T_DECLARED
    #endif

Concept by:	bde
Reviewed by:	jake, obrien
 2002-08-21 16:20:02 +00:00
Juli Mallett
6879bea818 Leave room for a trailing NUL not a NULL, that's not an ASCII character. 2002-08-19 03:52:36 +00:00
Robert Drehmel
f8418db73e - For compliance with IEEE Std 1003.1-2001, add the 'restrict' 
qualifier to function prototypes and definitions where
   appropriate using the '__restrict' macro.
 - Update the manual page.
 2002-08-15 10:28:52 +00:00
Robert Drehmel
71a00a449f - Introduce the 'restrict' qualifier to function prototypes and 
definitions to comply with IEEE Std 1003.1-2001.
 - Update the manual pages.
 2002-08-15 09:47:10 +00:00
Robert Drehmel
3248d0a517 - Add the 'restrict' qualifier to the function definitions and 
public prototypes of setbuf(3) and setvbuf(3) using the
   '__restrict' macro from <sys/cdefs.h> to be compliant with
   IEEE Std 1003.1-2001.
 - Replace the K&R with ANSI-C function definitions.
 - Bring the manual page up-to-date.
 2002-08-14 23:45:42 +00:00
Poul-Henning Kamp
209c34ba95 Unbreak one of the most confusing breaks of the tree I've seen. 
The last commit cannot possibly have been tested.
 2002-08-13 18:55:51 +00:00
Tim J. Robbins
439cb19e04 Tidy up SRCS and MAN assignments. 2002-08-13 11:56:02 +00:00
Tim J. Robbins
73ab4b2b33 Remove the Bugs section, which is not relevant to FreeBSD: there is no 
one-character ungetwc(3) buffer limit.
 2002-08-13 10:50:22 +00:00
Tim J. Robbins
46624699bd FreeBSD-ify: use In macro for header files in Synopsis, St C-99 instead of 
St C99 in Standards section.
 2002-08-13 10:47:17 +00:00
Tim J. Robbins
e74101e4ef Basic support for wide character I/O: getwc(), fgetwc(), getwchar(), 
putwc(), fputwc(), putwchar(), ungetwc(), fwide().
 2002-08-13 09:30:41 +00:00
Tim J. Robbins
01533af5a0 Manual pages for fwide(), getwc(), fgetwc(), getwchar(), putwc(), fputwc(), 
putwchar(), ungetwc() from NetBSD and Citrus Project, unmodified except
for the addition of $FreeBSD$.

Obtained from:	NetBSD, Citrus Project
 2002-08-12 13:23:12 +00:00
Jens Schweikhardt
2b239dd118 Fix typos; each file has at least one s/seperat/separat/ 
(I skipped those in contrib/, gnu/ and crypto/)
While I was at it, fixed a lot more found by ispell that I
could identify with certainty to be errors. All of these
were in comments or text, not in actual code.

Suggested by:	bde
MFC after:	3 days
 2002-08-11 13:05:30 +00:00
Ruslan Ermilov
a8272f7106 mdoc(7) police: punctuation. 2002-08-09 11:24:21 +00:00
Garrett Wollman
c98a4bf3fb Don't claim to fully implement C99 in the STANDARDS section and then disclaim 
compliance in the BUGS section immediately below.
 2002-07-15 19:46:06 +00:00
Garrett Wollman
647e4efd97 Note that fseeko() and ftello() are standard in 1003.1-2001. 
(Prefer the more-encompassing POSIX standard to SUSv2.)
 2002-07-15 19:42:25 +00:00
Chris Costello
1b5c321d3f Fix style and wording bugs introduced in my last commit. 
Sponsored by:	DARPA, NAI Labs
 2002-06-18 08:55:17 +00:00
Chris Costello
5f9c048ce7 o Move more information from BUGS into SECURITY CONSIDERATIONS and 
condense the redundant bits.
o Provide an example for using snprintf over sprintf.  This may be
  supplemented with an asprintf() example soon.

Sponsored by:	DARPA, NAI Labs
 2002-06-15 06:00:56 +00:00
Chris Costello
7bc7869122 Include information on the dangers of passing a user-supplied string as 
a format string.  This will later on be changed to a reference to the
FreeBSD Security Architecture after it has been committed.

PR:		docs/39320
Sposnored by:	DARPA, NAI Labs
 2002-06-13 23:35:22 +00:00
Archie Cobbs
6accdce98b Grammar fix: "contents" is plural. 
MFC after:	1 day
 2002-05-31 05:01:17 +00:00
Ruslan Ermilov
432e57ebfa mdoc(7) police: markup nits. 2002-05-30 09:53:47 +00:00
Ruslan Ermilov
16fb684936 mdoc(7) police: fix markup for types. 2002-05-29 15:42:59 +00:00
Alfred Perlstein
a82bbc730e Assume __STDC__, remove non-__STDC__ code. 
Submitted by: keramida
 2002-05-28 17:03:12 +00:00
Robert Drehmel
6e818f06aa Correct a check for NUL. 
Spotted by: bde
 2002-05-27 19:27:43 +00:00
Robert Drehmel
fb08c0489d - Move the loop conditional into the "for" header. 
- Remove redundant "? :" construct.
style(9):
 - Place a space after return statements.
 - Compare pointers to NULL.
 - Do not use ! to compare a character to nul.
 2002-05-27 11:01:30 +00:00
Robert Drehmel
ccccc4e1c3 Avoid wandering over the beginning of the actual buffer 
if the passed template string contains only 'X' characters.

Submitted by:	Mark Andrews <marka@isc.org> (patch modified)
PR:		38402
 2002-05-23 14:21:02 +00:00
Tony Finch
cfad593dbd Clarify that the value of getc() etc. is an unsigned char converted 
to an int (as per the C standard) i.e. it can be passed straight to
isalpha() etc.

Approved by:	dwmalone (mentor)
MFC after:	3 days
 2002-05-15 16:55:58 +00:00
Bill Fenner
946b2d0057 Implement several of the c99 updates to scanf(3): 
- New length modifiers: hh, j, ll, t, z.

Still to do:
 - %C, %S, %lc, %ls (wide character support)
 - %a/%A (exact hex representation of floating-point numbers)

Removed old compatability equivalents:
 - %D for %ld, %O for %lo, %X for %lx, %E and %F for %le & %lf (these
   were buggy anyway, since they should have represented %Le & %Lf).
 - %[unknown uppercase char] for %ld, %[unknown lowercase char] for %d
 2002-04-20 17:00:56 +00:00
Tom Rhodes
7d358b9a2a scanf.3 has an obsolete ``this release''. 
PR:		35610
MFC after:	2 days
 2002-04-10 20:52:49 +00:00
David E. O'Brien
1114a754ed Fix the style of the SCM ID's. 
I believe have made all of libc .h's as consistent as possible.
 2002-03-22 23:42:05 +00:00
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
1372519b15 Remove multi-line __P() usage. 2002-03-22 09:22:15 +00:00
David E. O'Brien
c05ac53b8b Remove __P() usage. 2002-03-21 22:49:10 +00:00
David E. O'Brien
8fb3f3f682 Remove 'register' keyword. 2002-03-21 18:49:23 +00:00
Dima Dorfman
38261ac8d6 Don't refer the reader to look for a word that doesn't exist anywhere 
else in the page.

PR:		35623
Submitted by:	Gary W. Swearingen <swear@blarg.net>
 2002-03-10 09:20:28 +00:00
Ruslan Ermilov
ce9df6eefc mdoc(7) police: 
Stop abusing the .%J macro for where the .Pa macro should have been used.
 2002-01-09 14:01:22 +00:00
Chris Costello
6ba681a185 All information from the "BUGS" section not belonging in "SECURITY 
CONSIDERATIONS" moved to "COMPATIBILITY".

Obtained from:	TrustedBSD Project
Sponsored by:	DARPA, NAI Labs
 2002-01-06 21:48:37 +00:00
Chris Costello
e125c135a8 Add new "SECURITY CONSIDERATIONS" sections. 
Obtained from:	TrustedBSD Project
Sponsored by:	DARPA, NAI Labs
 2002-01-06 21:16:41 +00:00
Alexey Zelkin
2e394b2fc1 Fix some style bugs 
Prompted by:	mike
 2001-12-17 15:11:29 +00:00
Alexey Zelkin
243e90d646 Also fix cases when thousands separator should be put before number. For 
example before for grouping sequence "\003\003" number 123456 was formated
as ",123,456", now "123,456".
 2001-12-13 21:05:27 +00:00
Alexey Zelkin
98ee763522 Respect locale while handling of \' flag. 
In original version grouping was hardcoded. It assumed that thousands
separator should be inserted to separate each 3 numbers. I.e. grouping
string "\003" was assumed for all cases. In correct case (per POSIX)
vfprintf should respect locale defined non-monetary (LC_NUMERIC
category) grouping sequence.

Also simplify thousands_sep handling.
 2001-12-13 19:45:41 +00:00
Ruslan Ermilov
2554caf28c mdoc(7) police: Minor formatting nits and optimizations to rev. 1.34. 2001-12-12 14:36:28 +00:00
Alexey Zelkin
7ae5c6791e * localeconv() usage is not FLOATING_POINT specific anymore (due to "'" flag 
addition) so move locale.h inclusion out of FLOATING_POINT ifdef's.
* add more comments
 2001-12-07 12:38:47 +00:00
Bill Fenner
828829cda5 Remove blank line. 2001-12-07 03:25:26 +00:00
Bill Fenner
7735bb0f64 Implement several of the c99 updates to printf(3): 
- New length modifiers: hh, j, t, z.
 - New flag: '.  Note that %'f is not yet implemented.
 - Use "inf"/"nan" for efg formats, "INF"/"NAN" for EFG formats.
 - Implemented %q in terms of %ll; if "quad_t" is not "long long"
   %q will break.

Still to do:
 - %C, %S, %lc, %ls (wide character support)
 - %'f (thousands in integer portion of %f)
 - %a/%A (exact hex representation of floating-point numbers)

Garrett Wollman wrote the first version of the vfprintf.c update;
Mike Barcroft wrote the first version of the printf.3 changes.
 2001-11-30 06:12:15 +00:00
Andrey A. Chernov
2209d8a27c Back out national digits support, POSIX explicetely disallows it: 
The definition of character class digit requires that only ten characters
-the ones defining digits- can be specified; alternate digits (for
example, Hindi or Kanji) cannot be specified here. However, the encoding
may vary if an implementation supports more than one encoding.

The definition of character class xdigit requires that the characters
included in character class digit are included here also and allows for
different symbols for the hexadecimal digits 10 through 15.
 2001-11-29 03:03:55 +00:00
Andrey A. Chernov
87c25490c8 Don't ever assume that isdigit() is always subset of isxdigit() 2001-11-28 06:06:27 +00:00
Andrey A. Chernov
997aec5b67 Allow national (non-ASCII) digits 2001-11-28 04:57:48 +00:00
Ruslan Ermilov
2f52231c66 mdoc(7) police: sort xrefs. 2001-11-20 13:58:21 +00:00
Murray Stokely
ac8b27d2ab Cross-reference the fdopen and fileno manpages. 
PR:		docs/31866
Submitted by:	W. Campbell <wcampbel@botbay.net>
 2001-11-14 16:24:51 +00:00
Andrey A. Chernov
7686e760b5 In > LONG_MAX test use sseek return value and not _offset which can be not 
active.
 2001-10-25 22:56:04 +00:00
Andrey A. Chernov
e41febc84b Help to recover from bad seek (i.e. negative or too big) happens beyond 
our pre-check control. Do the same way as refill.c does when it set __SERR,
i.e. clear read and ungetc buffers. Clear EOF flag too.
 2001-10-24 17:25:49 +00:00
Andrey A. Chernov
3f498bf72b Back out read buffer invalidating via __SMOD. 
It was correct, but not needed because internal buffer cleared on each seek
outside of it.
 2001-10-23 23:52:11 +00:00
Andrey A. Chernov
0502fac881 Change comment explaining another usage of __SMOD 2001-10-23 23:05:15 +00:00
Andrey A. Chernov
751fc77994 Disallow fseek() optimization in internal read buffer, if pointer is moved by 
seek. It means that beginning of read buffer becomes not the same as current
file position.
 2001-10-23 22:48:00 +00:00
Bruce Evans
18ca70d12d Fixed style bugs in previous commit. 2001-10-15 04:29:06 +00:00
Doug Rabson
a387081c63 Make this compile on ia64. 2001-10-14 13:45:33 +00:00
Ruslan Ermilov
32eef9aeb1 mdoc(7) police: Use the new .In macro for #include statements. 2001-10-01 16:09:29 +00:00
Andrey A. Chernov
1b89a29689 1) If __SAPP stream is not seekable, remove __SAPP flag on first call instead 
of repeating unsuccessful lseek call on each write (original stdio bug).

2) Save errno accross _sseek call in _swrite to not touch it in case write
success (original stdio bug).

3) Add _sseek error checking back, but only for __SOPT mode now.
 2001-09-07 17:16:02 +00:00
Andrey A. Chernov
ac206f37a1 For now just back out seek error checking in __SAPP case, it cause problems 
with non-seekable streams.  Now here is what here was originally, but it is
ugly, producing unneded seek syscall on each non-seekable stream write.  I'll
think about proper solution later.
 2001-09-07 02:13:11 +00:00
Andrey A. Chernov
347a15b2ab When __SOPT is cleared, clear __SOFF too. 
NOTE: original stdio bug.
 2001-09-03 02:35:10 +00:00
Andrey A. Chernov
5e00917d95 Re-arrange my funopen(3) fix to minimize differences with original stdio code, 
no functional changes.

Add fp->_offset optimization in _SAPP+_SOPT case
 2001-09-03 02:24:37 +00:00
Andrey A. Chernov
aeb7f4bac4 Internal seeks are overoptimized. They should remember fp->_offset only for 
plain regular files, i.e. files with __SOPT flag set. Fix it, so ftell(stdout)
always returns the same as lseek(1, 0, 1) now.

NOTE: this bug was in original stdio code
 2001-09-02 21:22:00 +00:00
Andrey A. Chernov
778d840e50 Fix bug in off_t overflow checking: if fp->_offset overflows, just remove 
__SOFF flag (i.e. we don't have offset) instead of returning EOVERFLOW.
It allows again continious reading from non-stop stream.
 2001-09-02 19:52:09 +00:00
Andrey A. Chernov
bf351925f7 Typo seek(2) -> lseek(2) 2001-09-02 19:24:07 +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
35e1a550de Save errno before function call and restore it on success (because many 
internal functions there may fail and set (i.e. overwrite) errno in normal
(not error) situation). In original variant errno testing after call
(as POSIX suggest) is wrong when errno overwrite happens.
 2001-09-01 15:28:24 +00:00
Andrey A. Chernov
d911eb4536 Remove even more unneded checks, original code can't overflows in that place 2001-09-01 15:01:37 +00:00
Andrey A. Chernov
4fd8a4cf24 Remove two checks unneeded now (can't happens) 2001-09-01 14:48:45 +00:00
Andrey A. Chernov
45892fd855 Make fseek(... SEEK_CUR) fails if current file-position is unspecified. 2001-09-01 14:40:01 +00:00
Andrey A. Chernov
3c4d9468b0 Note that prev. commit addition is for ftell/ftello 2001-09-01 14:23:30 +00:00
Andrey A. Chernov
2f5eadff6b Describe ESPIPE as result of unspecified file-position indicator value. 
Add more to SEE ALSO section.
 2001-09-01 14:11:53 +00:00
Andrey A. Chernov
a914951d68 Describe file-position behaviour from POSIX 2001-09-01 14:01:52 +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
6946977c36 If lseek to wrong value sucessfully happens despite all pre-checks, set __SERR 
to indicate that stream becomes inconsistent.
 2001-09-01 11:21:28 +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
711b11769d Describe that we disallow ungetc at offset 0 now. 2001-08-31 20:03:49 +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
1dfa423639 Initialize _offset to 0 in fopen(), it helps to optimize fseek/ftell 2001-08-31 13:14:49 +00:00
Andrey A. Chernov
ca934ebcae Detect fp->_offset overflow on read 
Use errno to catch negative seek with -1 offset
 2001-08-31 12:55:22 +00:00
Ruslan Ermilov
d6002fef6f Use ``.Rv -std'' wherever possible. 
Submitted by:	yar
 2001-08-31 09:57:38 +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
77f71bc5ac goto dumb; if can't obtain curoff for whence != SEEK_CUR cases, as supposed 2001-08-30 20:19:45 +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
Andrey A. Chernov
b0eeb07b5b Cosmetique fixes from bde 2001-08-26 10:38:29 +00:00
Andrey A. Chernov
f0d5097e06 Cosmetique: correct English in comments 2001-08-23 14:49:02 +00:00
Kris Kennaway
6dac8ac9e5 Mark some functions as __printflike() and/or taking const char * arguments 
instead of char *.

MFC after:	2 weeks
 2001-08-20 12:53:36 +00:00