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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 /sysdeps/generic
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 'sysdeps/generic')
-rw-r--r--sysdeps/generic/dl-sysdep.c98
1 files changed, 98 insertions, 0 deletions
diff --git a/sysdeps/generic/dl-sysdep.c b/sysdeps/generic/dl-sysdep.c
new file mode 100644
index 0000000..9b86f63
--- /dev/null
+++ b/sysdeps/generic/dl-sysdep.c
@@ -0,0 +1,98 @@
+/* Operating system support for run-time dynamic linker. Generic Unix version.
+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 <elf.h>
+#include <sys/types.h>
+#include <fcntl.h>
+#include <link.h>
+
+Elf32_Addr
+_dl_sysdep_start (void **start_argptr,
+ void (*dl_main) (const Elf32_Phdr *phdr, Elf32_Word phnum,
+ Elf32_Addr *user_entry))
+{
+ const Elf32_Phdr *phdr;
+ Elf32_Word phnum;
+ Elf32_Addr user_entry;
+ Elf32_auxv_t *av;
+ uid_t uid, euid;
+ gid_t gid, egid;
+
+ _dl_argc = *(int *) start_argptr;
+ _dl_argv = start_argptr + 1;
+ _environ = &_dl_argv[_dl_argc + 1];
+ start_argptr = (void **) _environ;
+ while (*start_argptr)
+ ++start_argptr;
+
+ for (av = ++start_argptr; av->a_type != AT_NULL; ++av)
+ switch (av->a_type)
+ {
+ case AT_PHDR:
+ phdr = av->a_un.a_ptr;
+ break;
+ case AT_PHNUM:
+ phnum = av->a_un.a_val;
+ break;
+ case AT_ENTRY:
+ user_entry = av->a_un.a_val;
+ case AT_UID:
+ uid = av->a_un.a_val;
+ break;
+ case AT_GID:
+ gid = av->a_un.a_val;
+ break;
+ case AT_EUID:
+ euid = av->a_un.a_val;
+ break;
+ case AT_EGID:
+ egid = av->a_un.a_val;
+ break;
+ }
+
+ _dl_secure = uid != euid || gid != egid;
+
+ (*dl_main) (phdr, phnum, &user_entry);
+ start_argptr[-1] = (void *) user_entry;
+}
+
+int
+_dl_sysdep_open_zero_fill (void)
+{
+ return open ("/dev/zero", O_RDONLY);
+}
+
+#include <stdarg.h>
+
+void
+_dl_sysdep_fatal (const char *msg, ...)
+{
+ va_list ap;
+
+ va_start (ap, msg);
+ do
+ {
+ size_t len = strlen (msg);
+ write (STDERR_FILENO, msg, len);
+ msg = va_arg (ap, const char *);
+ } while (msg);
+ va_end (ap);
+
+ _exit (127);
+}