X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=lib%2Ferror.c;h=cf8634332020392497c23a438eef02aaaa0c71eb;hb=a98bbee4c1388c33841d11b4bdc5d0a600a9deda;hp=5dbd4d726ee812ddedc5c7729c5960244d286cf2;hpb=067a83f1ec0c1d628c09b7964110558e49ef81d3;p=gnulib.git diff --git a/lib/error.c b/lib/error.c index 5dbd4d726..cf8634332 100644 --- a/lib/error.c +++ b/lib/error.c @@ -1,59 +1,48 @@ /* Error handler for noninteractive utilities - Copyright (C) 1990-2000 Free Software Foundation, Inc. + Copyright (C) 1990-1998, 2000-2005, 2006 Free Software Foundation, Inc. + This file is part of the GNU C Library. - This file is part of the GNU C Library. Its master source is NOT part of - the C library, however. The master source lives in /gd/gnu/lib. + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2, or (at your option) + any later version. - The GNU C Library is free software; you can redistribute it and/or - modify it under the terms of the GNU Library General Public License as - published by the Free Software Foundation; either version 2 of the - License, or (at your option) any later version. - - The GNU C Library is distributed in the hope that it will be useful, + This program 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 - Library General Public License for more details. + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. - You should have received a copy of the GNU Library General Public - License along with the GNU C Library; see the file COPYING.LIB. If not, - write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, - Boston, MA 02111-1307, USA. */ + You should have received a copy of the GNU General Public License along + with this program; if not, write to the Free Software Foundation, + Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ /* Written by David MacKenzie . */ -#ifdef HAVE_CONFIG_H +#if !_LIBC # include #endif +#include "error.h" + +#include #include +#include +#include -#if HAVE_VPRINTF || HAVE_DOPRNT || _LIBC -# if __STDC__ -# include -# define VA_START(args, lastarg) va_start(args, lastarg) -# else -# include -# define VA_START(args, lastarg) va_start(args) -# endif -#else -# define va_alist a1, a2, a3, a4, a5, a6, a7, a8 -# define va_dcl char *a1, *a2, *a3, *a4, *a5, *a6, *a7, *a8; +#if !_LIBC && ENABLE_NLS +# include "gettext.h" #endif -#if STDC_HEADERS || _LIBC -# include -# include -#else -void exit (); +#ifdef _LIBC +# include +# include +# include +# include +# define mbsrtowcs __mbsrtowcs #endif -#include "error.h" - -#ifndef HAVE_DECL_STRERROR_R -"this configure-time declaration test was not run" -#endif -#if !HAVE_DECL_STRERROR_R -char *strerror_r (); +#if USE_UNLOCKED_IO +# include "unlocked-io.h" #endif #ifndef _ @@ -63,11 +52,7 @@ char *strerror_r (); /* If NULL, error will flush stdout, then print on stderr the program name, a colon and a space. Otherwise, error will call this function without parameters instead. */ -void (*error_print_progname) ( -#if __STDC__ - 0 - void -#endif - ); +void (*error_print_progname) (void); /* This variable is incremented each time `error' is called. */ unsigned int error_message_count; @@ -77,104 +62,204 @@ unsigned int error_message_count; # define program_name program_invocation_name # include +# include +# include /* In GNU libc we want do not want to use the common name `error' directly. Instead make it a weak alias. */ +extern void __error (int status, int errnum, const char *message, ...) + __attribute__ ((__format__ (__printf__, 3, 4))); +extern void __error_at_line (int status, int errnum, const char *file_name, + unsigned int line_number, const char *message, + ...) + __attribute__ ((__format__ (__printf__, 5, 6)));; # define error __error # define error_at_line __error_at_line +# include +# define fflush(s) INTUSE(_IO_fflush) (s) +# undef putc +# define putc(c, fp) INTUSE(_IO_putc) (c, fp) + +# include + #else /* not _LIBC */ +# if !HAVE_DECL_STRERROR_R && STRERROR_R_CHAR_P +# ifndef HAVE_DECL_STRERROR_R +"this configure-time declaration test was not run" +# endif +char *strerror_r (); +# endif + /* The calling program should define program_name and set it to the name of the executing program. */ extern char *program_name; -# ifdef HAVE_STRERROR_R +# if HAVE_STRERROR_R || defined strerror_r # define __strerror_r strerror_r +# endif /* HAVE_STRERROR_R || defined strerror_r */ +#endif /* not _LIBC */ + +static void +print_errno_message (int errnum) +{ + char const *s; + +#if defined HAVE_STRERROR_R || _LIBC + char errbuf[1024]; +# if STRERROR_R_CHAR_P || _LIBC + s = __strerror_r (errnum, errbuf, sizeof errbuf); # else -# if HAVE_STRERROR -# ifndef strerror /* On some systems, strerror is a macro */ -char *strerror (); -# endif -# else -static char * -private_strerror (errnum) - int errnum; + if (__strerror_r (errnum, errbuf, sizeof errbuf) == 0) + s = errbuf; + else + s = 0; +# endif +#else + s = strerror (errnum); +#endif + +#if !_LIBC + if (! s) + s = _("Unknown system error"); +#endif + +#if _LIBC + __fxprintf (NULL, ": %s", s); +#else + fprintf (stderr, ": %s", s); +#endif +} + +static void +error_tail (int status, int errnum, const char *message, va_list args) { - extern char *sys_errlist[]; - extern int sys_nerr; +#if _LIBC + if (_IO_fwide (stderr, 0) > 0) + { +# define ALLOCA_LIMIT 2000 + 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 / 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 +#endif + vfprintf (stderr, message, args); + va_end (args); - if (errnum > 0 && errnum <= sys_nerr) - return _(sys_errlist[errnum]); - return _("Unknown system error"); + ++error_message_count; + if (errnum) + print_errno_message (errnum); +#if _LIBC + __fxprintf (NULL, "\n"); +#else + putc ('\n', stderr); +#endif + fflush (stderr); + if (status) + exit (status); } -# define strerror private_strerror -# endif /* HAVE_STRERROR */ -# endif /* HAVE_STRERROR_R */ -#endif /* not _LIBC */ + /* Print the program name and error message MESSAGE, which is a printf-style format string with optional args. If ERRNUM is nonzero, print its corresponding system error message. Exit with status STATUS if it is nonzero. */ -/* VARARGS */ - void -#if defined VA_START && __STDC__ error (int status, int errnum, const char *message, ...) -#else -error (status, errnum, message, va_alist) - int status; - int errnum; - char *message; - va_dcl -#endif { -#ifdef VA_START va_list args; + +#if defined _LIBC && defined __libc_ptf_call + /* We do not want this call to be cut short by a thread + cancellation. Therefore disable cancellation for now. */ + int state = PTHREAD_CANCEL_ENABLE; + __libc_ptf_call (pthread_setcancelstate, (PTHREAD_CANCEL_DISABLE, &state), + 0); #endif + fflush (stdout); +#ifdef _LIBC + _IO_flockfile (stderr); +#endif if (error_print_progname) (*error_print_progname) (); else { - fflush (stdout); +#if _LIBC + __fxprintf (NULL, "%s: ", program_name); +#else fprintf (stderr, "%s: ", program_name); +#endif } -#ifdef VA_START - VA_START (args, message); -# if HAVE_VPRINTF || _LIBC - vfprintf (stderr, message, args); -# else - _doprnt (message, args, stderr); -# endif - va_end (args); -#else - fprintf (stderr, message, a1, a2, a3, a4, a5, a6, a7, a8); -#endif + va_start (args, message); + error_tail (status, errnum, message, args); - ++error_message_count; - if (errnum) - { -#if defined HAVE_STRERROR_R || _LIBC - char errbuf[1024]; -# if HAVE_WORKING_STRERROR_R || _LIBC - fprintf (stderr, ": %s", __strerror_r (errnum, errbuf, sizeof errbuf)); -# else - /* Don't use __strerror_r's return value because on some systems - (at least DEC UNIX 4.0[A-D]) strerror_r returns `int'. */ - __strerror_r (errnum, errbuf, sizeof errbuf); - fprintf (stderr, ": %s", errbuf); +#ifdef _LIBC + _IO_funlockfile (stderr); +# ifdef __libc_ptf_call + __libc_ptf_call (pthread_setcancelstate, (state, NULL), 0); # endif -#else - fprintf (stderr, ": %s", strerror (errnum)); #endif - } - putc ('\n', stderr); - fflush (stderr); - if (status) - exit (status); } /* Sometimes we want to have at most one error per line. This @@ -182,30 +267,19 @@ error (status, errnum, message, va_alist) int error_one_per_line; void -#if defined VA_START && __STDC__ error_at_line (int status, int errnum, const char *file_name, unsigned int line_number, const char *message, ...) -#else -error_at_line (status, errnum, file_name, line_number, message, va_alist) - int status; - int errnum; - const char *file_name; - unsigned int line_number; - char *message; - va_dcl -#endif { -#ifdef VA_START va_list args; -#endif if (error_one_per_line) { static const char *old_file_name; static unsigned int old_line_number; - if (old_line_number == line_number && - (file_name == old_file_name || !strcmp (old_file_name, file_name))) + if (old_line_number == line_number + && (file_name == old_file_name + || strcmp (old_file_name, file_name) == 0)) /* Simply return and print nothing. */ return; @@ -213,50 +287,46 @@ error_at_line (status, errnum, file_name, line_number, message, va_alist) old_line_number = line_number; } +#if defined _LIBC && defined __libc_ptf_call + /* We do not want this call to be cut short by a thread + cancellation. Therefore disable cancellation for now. */ + int state = PTHREAD_CANCEL_ENABLE; + __libc_ptf_call (pthread_setcancelstate, (PTHREAD_CANCEL_DISABLE, &state), + 0); +#endif + + fflush (stdout); +#ifdef _LIBC + _IO_flockfile (stderr); +#endif if (error_print_progname) (*error_print_progname) (); else { - fflush (stdout); +#if _LIBC + __fxprintf (NULL, "%s:", program_name); +#else fprintf (stderr, "%s:", program_name); +#endif } - if (file_name != NULL) - fprintf (stderr, "%s:%d: ", file_name, line_number); - -#ifdef VA_START - VA_START (args, message); -# if HAVE_VPRINTF || _LIBC - vfprintf (stderr, message, args); -# else - _doprnt (message, args, stderr); -# endif - va_end (args); +#if _LIBC + __fxprintf (NULL, file_name != NULL ? "%s:%d: " : " ", + file_name, line_number); #else - fprintf (stderr, message, a1, a2, a3, a4, a5, a6, a7, a8); + fprintf (stderr, file_name != NULL ? "%s:%d: " : " ", + file_name, line_number); #endif - ++error_message_count; - if (errnum) - { -#if defined HAVE_STRERROR_R || _LIBC - char errbuf[1024]; -# if HAVE_WORKING_STRERROR_R || _LIBC - fprintf (stderr, ": %s", __strerror_r (errnum, errbuf, sizeof errbuf)); -# else - /* Don't use __strerror_r's return value because on some systems - (at least DEC UNIX 4.0[A-D]) strerror_r returns `int'. */ - __strerror_r (errnum, errbuf, sizeof errbuf); - fprintf (stderr, ": %s", errbuf); + va_start (args, message); + error_tail (status, errnum, message, args); + +#ifdef _LIBC + _IO_funlockfile (stderr); +# ifdef __libc_ptf_call + __libc_ptf_call (pthread_setcancelstate, (state, NULL), 0); # endif -#else - fprintf (stderr, ": %s", strerror (errnum)); #endif - } - putc ('\n', stderr); - fflush (stderr); - if (status) - exit (status); } #ifdef _LIBC