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author | Roland McGrath <roland@gnu.org> | 1995-05-02 06:35:55 +0000 |
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committer | Roland McGrath <roland@gnu.org> | 1995-05-02 06:35:55 +0000 |
commit | d66e34cd423425c348bcc83df127dd19711b0b9a (patch) | |
tree | 97058e776d3b4fe06ef54bc4951596991652183f /elf/dlerror.c | |
parent | 08162fa888913a5153d2fcdc4e1a816b57b1fe56 (diff) | |
download | glibc-d66e34cd423425c348bcc83df127dd19711b0b9a.zip glibc-d66e34cd423425c348bcc83df127dd19711b0b9a.tar.gz glibc-d66e34cd423425c348bcc83df127dd19711b0b9a.tar.bz2 |
* sysdeps/mach/i386/sysdep.h (SNARF_ARGS, CALL_WITH_SP): Rewritten.
* sysdeps/i386/dl-machine.h: New file.
* sysdeps/stub/dl-machine.h: New file.
* sysdeps/i386/dl-runtime.c: New file.
* sysdeps/stub/dl-runtime.c: New file.
* sysdeps/i386/elf/start.S: New file.
* sysdeps/generic/dl-sysdep.c: New file.
* sysdeps/mach/hurd/dl-sysdep.c: New file.
Diffstat (limited to 'elf/dlerror.c')
-rw-r--r-- | elf/dlerror.c | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/elf/dlerror.c b/elf/dlerror.c new file mode 100644 index 0000000..0eed60a --- /dev/null +++ b/elf/dlerror.c @@ -0,0 +1,64 @@ +/* dlerror -- Return error detail for failing <dlfcn.h> functions. +Copyright (C) 1995 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 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, +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. + +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., 675 Mass Ave, +Cambridge, MA 02139, USA. */ + +#include <link.h> +#include <dlfcn.h> +#include <stdio.h> +#include <string.h> +#include <stdlib.h> + +static int _dl_last_errcode; +static const char *_dl_last_errstring; + +char * +dlerror (void) +{ + char *ret; + + if (! _dl_last_errstring) + return NULL; + + if (_dl_last_errcode) + { + static char *buf; + if (buf) + { + free (buf); + buf = NULL; + } + if (asprintf (&buf, "%s: %s", + _dl_last_errstring, strerror (_dl_last_errcode)) == -1) + return NULL; + else + ret = buf; + } + else + ret = (char *) _dl_last_errstring; + + /* Reset the error indicator. */ + _dl_last_errstring = NULL; + return ret; +} + +int +_dlerror_run (void (*operate) (void)) +{ + _dl_last_errcode = _dl_catch_error (&_dl_last_errstring, operate); + return _dl_last_errstring != NULL; +} |