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authorRoland McGrath <roland@gnu.org>1996-05-29 04:48:04 +0000
committerRoland McGrath <roland@gnu.org>1996-05-29 04:48:04 +0000
commit0200214b288810fc261b0b65c32f7068fcfa9b40 (patch)
treea488a0a435ccf62b0870121b839b08de0d37a9b5 /elf/dl-error.c
parent215dbbb1508bd6b86211112dd5ddaf9bd2290690 (diff)
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Tue May 28 04:38:10 1996 Ulrich Drepper <drepper@cygnus.com>
* limits.h: Change MB_LEN_MAX to 6. A 31-bit ISO 10646 character in UTF-8 encoding has that many bytes. * locale/langinfo.h: New element _NL_CTYPE_MB_CUR_MAX. * locale/categories.def: Add description of field _NL_CTYPE_MB_CUR_MAX. * locale/Makefile (routines): Add mb_cur_max. * locale/mb_cur_max.c: New file. This function gets called when the macro MB_CUR_MAX is used. * locale/C-ctype.c: Initialize new mb_cur_max field. * locale/localeinfo.h: Change magic value because of incompatible change. * locale/programs/ld-ctype.c: Determine value of mb_cur_max according to current character set and write it out with the rest. * stdlib/stdlib.h (MB_CUR_MAX): Not constant anymore. Get value according to currently used locale for catefory LC_CTYPE by calling the function __ctype_get_mb_cur_max. Tue May 28 03:27:46 1996 Ulrich Drepper <drepper@cygnus.com> * FAQ: Fix some typos. Tell that for Linux the kernel header files are necessary. * PROJECTS: New file. List of open jobs for glibc. * Makefile (distribute): Add PROJECTS. * crypt/GNUmakefile (headers): New variable. Mention crypt.h. * crypt/crypt.h: Header for crypt functions. * elf/elf.h: Add some new constants from recent Cygnus ELF header files. * login/getutid_r.c: Test for correct type. Don't depend on ut_type and ut_id unless _HAVE_UT_TYPE and _HAVE_UT_ID resp. are defined. Make really compliant with specification. * login/getutline_r.c, login/pututline_r.c: Don't depend on ut_type and ut_id unless _HAVE_UT_TYPE and _HAVE_UT_ID resp. are defined. Make really compliant with specification. * login/setutent_r.c: Don't depend on ut_type and ut_id unless _HAVE_UT_TYPE and _HAVE_UT_ID resp. are defined. * login/login.c, login/logout.c, login/logwtmp.c: Complete rewrite. Now based on getut*/setut* functions. * stdlib/strtol.c: Undo changes of Wed May 22 01:48:54 1996. This prevented using this file in other GNU packages. * sysdeps/gnu/utmpbits.h: Define _HAVE_UT_TYPE, _HAVE_UT_ID, and _HAVE_UT_TV because struct utmp has these members. * sysdeps/libm-i387/e_exp.S: Correct exp(+-Inf) case. * utmp.h: New file. Wrapper around login/utmp.h. * elf/dl-error.c (struct catch): New type. (catch): New static variable, struct catch *. (catch_env, signalled_errstring, signalled_objname): Variables removed. (_dl_signal_error): If CATCH is non-null, set its errstring and objname members and jump to CATCH->env. If it is null, call _dl_sysdep_fatal with a standard message. * elf/rtld.c (dl_main): Explode `doit' function into dl_main's body. No longer use _dl_catch_error.
Diffstat (limited to 'elf/dl-error.c')
-rw-r--r--elf/dl-error.c51
1 files changed, 41 insertions, 10 deletions
diff --git a/elf/dl-error.c b/elf/dl-error.c
index a5c861190f..737bba7421 100644
--- a/elf/dl-error.c
+++ b/elf/dl-error.c
@@ -1,5 +1,5 @@
/* Error handling for runtime dynamic linker.
-Copyright (C) 1995 Free Software Foundation, Inc.
+Copyright (C) 1995, 1996 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
@@ -20,18 +20,47 @@ Cambridge, MA 02139, USA. */
#include <stddef.h>
#include <link.h>
#include <setjmp.h>
+#include <string.h>
+
+/* This structure communicates state between _dl_catch_error and
+ _dl_signal_error. */
+struct catch
+ {
+ const char *errstring, *objname; /* Error detail filled in here. */
+ jmp_buf env; /* longjmp here on error. */
+ };
+
+/* This points to such a structure during a call to _dl_catch_error.
+ During implicit startup and run-time work for needed shared libraries,
+ this is null. */
+static struct catch *catch;
-static jmp_buf catch_env;
-static const char *signalled_errstring, *signalled_objname;
void
_dl_signal_error (int errcode,
const char *objname,
const char *errstring)
{
- signalled_errstring = errstring ?: "DYNAMIC LINKER BUG!!!";
- signalled_objname = objname;
- longjmp (catch_env, errcode ?: -1);
+ if (! errstring)
+ errstring = "DYNAMIC LINKER BUG!!!";
+
+ if (catch)
+ {
+ /* We are inside _dl_catch_error. Return to it. */
+ catch->errstring = errstring;
+ catch->objname = objname;
+ longjmp (catch->env, errcode ?: -1);
+ }
+ else
+ {
+ /* Lossage while resolving the program's own symbols is always fatal. */
+ extern char **_dl_argv; /* Set in rtld.c at startup. */
+ _dl_sysdep_fatal (_dl_argv[0] ?: "<program name unknown>",
+ ": error in loading shared libraries\n",
+ objname ?: "", objname ? ": " : "",
+ errstring, errcode ? ": " : "",
+ errcode ? strerror (errcode) : "", "\n", NULL);
+ }
}
int
@@ -40,18 +69,20 @@ _dl_catch_error (const char **errstring,
void (*operate) (void))
{
int errcode;
+ struct catch c = { errstring: NULL, objname: NULL };
- signalled_errstring = signalled_objname = NULL;
- errcode = setjmp (catch_env);
+ errcode = setjmp (c.env);
if (errcode == 0)
{
+ catch = &c;
(*operate) ();
+ catch = NULL;
*errstring = *objname = NULL;
return 0;
}
/* We get here only if we longjmp'd out of OPERATE. */
- *errstring = signalled_errstring;
- *objname = signalled_objname;
+ *errstring = c.errstring;
+ *objname = c.objname;
return errcode == -1 ? 0 : errcode;
}