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git.ipfire.org Git - thirdparty/glibc.git/blob - elf/dl-error.c
1 /* Error handling for runtime dynamic linker.
2 Copyright (C) 1995, 1996 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Library General Public License as
7 published by the Free Software Foundation; either version 2 of the
8 License, or (at your option) any later version.
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Library General Public License for more details.
15 You should have received a copy of the GNU Library General Public
16 License along with the GNU C Library; see the file COPYING.LIB. If
17 not, write to the Free Software Foundation, Inc., 675 Mass Ave,
18 Cambridge, MA 02139, USA. */
25 /* This structure communicates state between _dl_catch_error and
29 const char *errstring
, *objname
; /* Error detail filled in here. */
30 jmp_buf env
; /* longjmp here on error. */
33 /* This points to such a structure during a call to _dl_catch_error.
34 During implicit startup and run-time work for needed shared libraries,
36 static struct catch *catch;
40 _dl_signal_error (int errcode
,
42 const char *errstring
)
45 errstring
= "DYNAMIC LINKER BUG!!!";
49 /* We are inside _dl_catch_error. Return to it. */
50 catch->errstring
= errstring
;
51 catch->objname
= objname
;
52 longjmp (catch->env
, errcode
?: -1);
56 /* Lossage while resolving the program's own symbols is always fatal. */
57 extern char **_dl_argv
; /* Set in rtld.c at startup. */
58 _dl_sysdep_fatal (_dl_argv
[0] ?: "<program name unknown>",
59 ": error in loading shared libraries\n",
60 objname
?: "", objname
? ": " : "",
61 errstring
, errcode
? ": " : "",
62 errcode
? strerror (errcode
) : "", "\n", NULL
);
67 _dl_catch_error (const char **errstring
,
69 void (*operate
) (void))
72 struct catch c
= { errstring
: NULL
, objname
: NULL
};
74 errcode
= setjmp (c
.env
);
80 *errstring
= *objname
= NULL
;
84 /* We get here only if we longjmp'd out of OPERATE. */
85 *errstring
= c
.errstring
;
87 return errcode
== -1 ? 0 : errcode
;