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authorRoland McGrath <roland@gnu.org>1995-05-02 06:35:55 +0000
committerRoland McGrath <roland@gnu.org>1995-05-02 06:35:55 +0000
commitd66e34cd423425c348bcc83df127dd19711b0b9a (patch)
tree97058e776d3b4fe06ef54bc4951596991652183f /elf/dlerror.c
parent08162fa888913a5153d2fcdc4e1a816b57b1fe56 (diff)
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* 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.c64
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;
+}