mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-24 03:31:07 +00:00
error, warn, warnx: Use __fxprintf for wide printing [BZ #23519]
Also introduce the __vfxprintf function.
This commit is contained in:
Florian Weimer
parent
599cf39766
commit
fdb16de387
12
ChangeLog
12
ChangeLog
@ -1,3 +1,15 @@
|
||||
2018-08-14 Florian Weimer <fweimer@redhat.com>
|
||||
|
||||
[BZ #23519]
|
||||
* include/stdio.h (__vfxprintf): Declare.
|
||||
* stdio-common/fxprintf.c (__vfxprintf): New function.
|
||||
(__fxprintf): Call it.
|
||||
* misc/err.c (convert_and_print): Remove function.
|
||||
(vwarnx, vwarn): Call __fxprintf and __vfxprintf.
|
||||
* misc/error.c [_LIBC] (error_tail): Call __vfxprintf.
|
||||
* misc/Makefile (tests): Add tst-warn-wide.
|
||||
* misc/tst-warn-wide.c: New file.
|
||||
|
||||
2018-08-14 Wilco Dijkstra <wdijkstr@arm.com>
|
||||
Szabolcs Nagy <szabolcs.nagy@arm.com>
|
||||
|
||||
|
||||
@ -126,6 +126,8 @@ extern int __fxprintf (FILE *__fp, const char *__fmt, ...)
|
||||
__attribute__ ((__format__ (__printf__, 2, 3))) attribute_hidden;
|
||||
extern int __fxprintf_nocancel (FILE *__fp, const char *__fmt, ...)
|
||||
__attribute__ ((__format__ (__printf__, 2, 3))) attribute_hidden;
|
||||
int __vfxprintf (FILE *__fp, const char *__fmt, __gnuc_va_list)
|
||||
attribute_hidden;
|
||||
|
||||
/* Read the next line from FP into BUFFER, of LENGTH bytes. LINE will
|
||||
include the line terminator and a NUL terminator. On success,
|
||||
|
||||
@ -84,7 +84,7 @@ tests := tst-dirname tst-tsearch tst-fdset tst-efgcvt tst-mntent tst-hsearch \
|
||||
tst-error1 tst-pselect tst-insremque tst-mntent2 bug-hsearch1 \
|
||||
tst-mntent-blank-corrupt tst-mntent-blank-passno bug18240 \
|
||||
tst-preadvwritev tst-preadvwritev64 tst-makedev tst-empty \
|
||||
tst-preadvwritev2 tst-preadvwritev64v2
|
||||
tst-preadvwritev2 tst-preadvwritev64v2 tst-warn-wide
|
||||
|
||||
tests-internal := tst-atomic tst-atomic-long tst-allocate_once
|
||||
tests-static := tst-empty
|
||||
|
||||
82
misc/err.c
82
misc/err.c
@ -37,68 +37,14 @@ extern char *__progname;
|
||||
va_end (ap); \
|
||||
}
|
||||
|
||||
static void
|
||||
convert_and_print (const char *format, __gnuc_va_list ap)
|
||||
{
|
||||
#define ALLOCA_LIMIT 2000
|
||||
size_t len;
|
||||
wchar_t *wformat = NULL;
|
||||
mbstate_t st;
|
||||
size_t res;
|
||||
const char *tmp;
|
||||
|
||||
if (format == NULL)
|
||||
return;
|
||||
|
||||
len = strlen (format) + 1;
|
||||
|
||||
do
|
||||
{
|
||||
if (len < ALLOCA_LIMIT)
|
||||
wformat = (wchar_t *) alloca (len * sizeof (wchar_t));
|
||||
else
|
||||
{
|
||||
if (wformat != NULL && len / 2 < ALLOCA_LIMIT)
|
||||
wformat = NULL;
|
||||
|
||||
wformat = (wchar_t *) realloc (wformat, len * sizeof (wchar_t));
|
||||
|
||||
if (wformat == NULL)
|
||||
{
|
||||
fputws_unlocked (L"out of memory\n", stderr);
|
||||
return;
|
||||
}
|
||||
}
|
||||
|
||||
memset (&st, '\0', sizeof (st));
|
||||
tmp =format;
|
||||
}
|
||||
while ((res = __mbsrtowcs (wformat, &tmp, len, &st)) == len);
|
||||
|
||||
if (res == (size_t) -1)
|
||||
/* The string cannot be converted. */
|
||||
wformat = (wchar_t *) L"???";
|
||||
|
||||
__vfwprintf (stderr, wformat, ap);
|
||||
}
|
||||
|
||||
void
|
||||
vwarnx (const char *format, __gnuc_va_list ap)
|
||||
{
|
||||
flockfile (stderr);
|
||||
if (_IO_fwide (stderr, 0) > 0)
|
||||
{
|
||||
__fwprintf (stderr, L"%s: ", __progname);
|
||||
convert_and_print (format, ap);
|
||||
putwc_unlocked (L'\n', stderr);
|
||||
}
|
||||
else
|
||||
{
|
||||
fprintf (stderr, "%s: ", __progname);
|
||||
if (format)
|
||||
vfprintf (stderr, format, ap);
|
||||
putc_unlocked ('\n', stderr);
|
||||
}
|
||||
__fxprintf (stderr, "%s: ", __progname);
|
||||
if (format != NULL)
|
||||
__vfxprintf (stderr, format, ap);
|
||||
__fxprintf (stderr, "\n");
|
||||
funlockfile (stderr);
|
||||
}
|
||||
libc_hidden_def (vwarnx)
|
||||
@ -109,27 +55,17 @@ vwarn (const char *format, __gnuc_va_list ap)
|
||||
int error = errno;
|
||||
|
||||
flockfile (stderr);
|
||||
if (_IO_fwide (stderr, 0) > 0)
|
||||
if (format != NULL)
|
||||
{
|
||||
__fwprintf (stderr, L"%s: ", __progname);
|
||||
if (format)
|
||||
{
|
||||
convert_and_print (format, ap);
|
||||
fputws_unlocked (L": ", stderr);
|
||||
}
|
||||
__fxprintf (stderr, "%s: ", __progname);
|
||||
__vfxprintf (stderr, format, ap);
|
||||
__set_errno (error);
|
||||
__fwprintf (stderr, L"%m\n");
|
||||
__fxprintf (stderr, ": %m\n");
|
||||
}
|
||||
else
|
||||
{
|
||||
fprintf (stderr, "%s: ", __progname);
|
||||
if (format)
|
||||
{
|
||||
vfprintf (stderr, format, ap);
|
||||
fputs_unlocked (": ", stderr);
|
||||
}
|
||||
__set_errno (error);
|
||||
fprintf (stderr, "%m\n");
|
||||
__fxprintf (stderr, "%s: %m\n", __progname);
|
||||
}
|
||||
funlockfile (stderr);
|
||||
}
|
||||
|
||||
72
misc/error.c
72
misc/error.c
@ -203,72 +203,14 @@ static void _GL_ATTRIBUTE_FORMAT_PRINTF (3, 0) _GL_ARG_NONNULL ((3))
|
||||
error_tail (int status, int errnum, const char *message, va_list args)
|
||||
{
|
||||
#if _LIBC
|
||||
if (_IO_fwide (stderr, 0) > 0)
|
||||
{
|
||||
size_t len = strlen (message) + 1;
|
||||
wchar_t *wmessage = NULL;
|
||||
mbstate_t st;
|
||||
size_t res;
|
||||
const char *tmp;
|
||||
bool use_malloc = false;
|
||||
|
||||
while (1)
|
||||
{
|
||||
if (__libc_use_alloca (len * sizeof (wchar_t)))
|
||||
wmessage = (wchar_t *) alloca (len * sizeof (wchar_t));
|
||||
else
|
||||
{
|
||||
if (!use_malloc)
|
||||
wmessage = NULL;
|
||||
|
||||
wchar_t *p = (wchar_t *) realloc (wmessage,
|
||||
len * sizeof (wchar_t));
|
||||
if (p == NULL)
|
||||
{
|
||||
free (wmessage);
|
||||
fputws_unlocked (L"out of memory\n", stderr);
|
||||
return;
|
||||
}
|
||||
wmessage = p;
|
||||
use_malloc = true;
|
||||
}
|
||||
|
||||
memset (&st, '\0', sizeof (st));
|
||||
tmp = message;
|
||||
|
||||
res = mbsrtowcs (wmessage, &tmp, len, &st);
|
||||
if (res != len)
|
||||
break;
|
||||
|
||||
if (__builtin_expect (len >= SIZE_MAX / sizeof (wchar_t) / 2, 0))
|
||||
{
|
||||
/* This really should not happen if everything is fine. */
|
||||
res = (size_t) -1;
|
||||
break;
|
||||
}
|
||||
|
||||
len *= 2;
|
||||
}
|
||||
|
||||
if (res == (size_t) -1)
|
||||
{
|
||||
/* The string cannot be converted. */
|
||||
if (use_malloc)
|
||||
{
|
||||
free (wmessage);
|
||||
use_malloc = false;
|
||||
}
|
||||
wmessage = (wchar_t *) L"???";
|
||||
}
|
||||
|
||||
__vfwprintf (stderr, wmessage, args);
|
||||
|
||||
if (use_malloc)
|
||||
free (wmessage);
|
||||
}
|
||||
else
|
||||
int ret = __vfxprintf (stderr, message, args);
|
||||
if (ret < 0 && errno == ENOMEM && _IO_fwide (stderr, 0) > 0)
|
||||
/* Leave a trace in case the heap allocation of the message string
|
||||
failed. */
|
||||
fputws_unlocked (L"out of memory\n", stderr);
|
||||
#else
|
||||
vfprintf (stderr, message, args);
|
||||
#endif
|
||||
vfprintf (stderr, message, args);
|
||||
va_end (args);
|
||||
|
||||
++error_message_count;
|
||||
|
||||
88
misc/tst-warn-wide.c
Normal file
88
misc/tst-warn-wide.c
Normal file
@ -0,0 +1,88 @@
|
||||
/* Test wide output conversion for warn.
|
||||
Copyright (C) 2018 Free Software Foundation, Inc.
|
||||
This file is part of the GNU C Library.
|
||||
|
||||
The GNU C Library is free software; you can redistribute it and/or
|
||||
modify it under the terms of the GNU Lesser General Public
|
||||
License as published by the Free Software Foundation; either
|
||||
version 2.1 of the License, or (at your option) any later version.
|
||||
|
||||
The GNU C Library is distributed in the hope that it will be useful,
|
||||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||||
Lesser General Public License for more details.
|
||||
|
||||
You should have received a copy of the GNU Lesser General Public
|
||||
License along with the GNU C Library; if not, see
|
||||
<http://www.gnu.org/licenses/>. */
|
||||
|
||||
#include <err.h>
|
||||
#include <errno.h>
|
||||
#include <stdio.h>
|
||||
#include <stdlib.h>
|
||||
#include <string.h>
|
||||
#include <support/check.h>
|
||||
#include <support/xmemstream.h>
|
||||
#include <wchar.h>
|
||||
|
||||
/* Used to trigger the large-string path in __fxprintf. */
|
||||
#define PADDING \
|
||||
"XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX" \
|
||||
"XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX" \
|
||||
"XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX"
|
||||
|
||||
#define LPADDING \
|
||||
L"XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX" \
|
||||
"XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX" \
|
||||
"XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX"
|
||||
|
||||
|
||||
static void
|
||||
one_test (const char *message, int error_code, const wchar_t *expected)
|
||||
{
|
||||
wchar_t *buffer = NULL;
|
||||
size_t length = 0;
|
||||
FILE *fp = open_wmemstream (&buffer, &length);
|
||||
TEST_VERIFY_EXIT (fp != NULL);
|
||||
FILE *old_stderr = stderr;
|
||||
stderr = fp;
|
||||
errno = error_code;
|
||||
switch (error_code)
|
||||
{
|
||||
case E2BIG:
|
||||
warn ("%s with padding " PADDING, message);
|
||||
break;
|
||||
case EAGAIN:
|
||||
warn ("%s", message);
|
||||
break;
|
||||
case -1:
|
||||
warnx ("%s", message);
|
||||
break;
|
||||
case -2:
|
||||
warnx ("%s with padding " PADDING, message);
|
||||
break;
|
||||
}
|
||||
stderr = old_stderr;
|
||||
TEST_VERIFY_EXIT (!ferror (fp));
|
||||
TEST_COMPARE (fclose (fp), 0);
|
||||
if (wcscmp (buffer, expected) != 0)
|
||||
FAIL_EXIT1 ("unexpected output: %ls", buffer);
|
||||
free (buffer);
|
||||
}
|
||||
|
||||
static int
|
||||
do_test (void)
|
||||
{
|
||||
one_test ("no errno", -1,
|
||||
L"tst-warn-wide: no errno\n");
|
||||
one_test ("no errno", -2,
|
||||
L"tst-warn-wide: no errno with padding " PADDING "\n");
|
||||
one_test ("with errno", EAGAIN,
|
||||
L"tst-warn-wide: with errno: Resource temporarily unavailable\n");
|
||||
one_test ("with errno", E2BIG,
|
||||
L"tst-warn-wide: with errno with padding " PADDING
|
||||
": Argument list too long\n");
|
||||
return 0;
|
||||
}
|
||||
|
||||
#include <support/test-driver.c>
|
||||
@ -62,18 +62,22 @@ locked_vfxprintf (FILE *fp, const char *fmt, va_list ap)
|
||||
}
|
||||
|
||||
int
|
||||
__fxprintf (FILE *fp, const char *fmt, ...)
|
||||
__vfxprintf (FILE *fp, const char *fmt, va_list ap)
|
||||
{
|
||||
if (fp == NULL)
|
||||
fp = stderr;
|
||||
_IO_flockfile (fp);
|
||||
int res = locked_vfxprintf (fp, fmt, ap);
|
||||
_IO_funlockfile (fp);
|
||||
return res;
|
||||
}
|
||||
|
||||
int
|
||||
__fxprintf (FILE *fp, const char *fmt, ...)
|
||||
{
|
||||
va_list ap;
|
||||
va_start (ap, fmt);
|
||||
_IO_flockfile (fp);
|
||||
|
||||
int res = locked_vfxprintf (fp, fmt, ap);
|
||||
|
||||
_IO_funlockfile (fp);
|
||||
int res = __vfxprintf (fp, fmt, ap);
|
||||
va_end (ap);
|
||||
return res;
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user