439d1d4560
* sysdeps/unix/i386/sysdep.h (JUMPTARGET): New macro; use name@PLT
#ifdef PIC.
(PSEUDO): Use JUMPTARGET(syscall_error) in jump insn.
* sysdeps/unix/i386/syscall.S: Use JUMPTARGET(syscall_error) in
jump insn.
* sysdeps/unix/sysv/sysv4/linux/i386/sysdep.h: Rewritten.
* sysdeps/unix/sysv/sysv4/linux/i386/syscall.S: New file.
* sysdeps/unix/sysv/sysv4/linux/i386/socket.S: Include
<sys/socketcall.h>. Save %ebx in call-clobbered %edx instead of
stack. Use JUMPTARGET(syscall_error) in jump insn.
* Makeconfig (+gccwarn): Add -Wbad-function-cast -Wconversion.
* sysdeps/unix/i386/sysdep.h (ENTRY): Use ASM_GLOBAL_DIRECTIVE and
ASM_TYPE_DIRECTIVE.
(ASM_TYPE_DIRECTIVE): New macro; defined using `.type' #ifdef ELF.
* sysdeps/unix/sysv/sysv4/linux/i386/sysdep.S (__syscall_error):
Rewritten, #include'ing unix/i386/sysdep.S for most of the code.
* sysdeps/unix/i386/sysdep.S [PIC]: Store into `errno' through the GOT.
Fixes to help Linux, inspired by drepper's work:
* configure.in (os=linux*): Use unix/sysv/sysv4 for $base_os,
instead of unix/sysv.
* sysdeps/posix/utimes.c: New file.
* sysdeps/generic/getdomain.c: New file.
* sysdeps/i386/init-first.c: Removed gratuitous #include <hurd.h>.
* sysdeps/generic/dl-sysdep.c: Include <unistd.h> and declare
externals _dl_argc, _dl_argc, and _environ.
* sysdeps/unix/sysv/linux/{accept,connect,getsockname,rename,
socketpair,waitpid,bind,getpeername,listen,setsid,wait4}.S: Moved
to new directory sysdeps/unix/sysv/sysv4/linux.
* sysdeps/unix/sysv/linux: Directory removed.
* sysdeps/unix/sysv/i386/linux/{socket.S,sysdep.h,sysdep.S}: Moved
to new directory sysdeps/unix/sysv/sysv4/linux/i386.
* sysdeps/unix/sysv/linux/i386: Directory removed.
104 lines
2.4 KiB
C
104 lines
2.4 KiB
C
/* Operating system support for run-time dynamic linker. Generic Unix version.
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Copyright (C) 1995 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If
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not, write to the Free Software Foundation, Inc., 675 Mass Ave,
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Cambridge, MA 02139, USA. */
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#include <elf.h>
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#include <sys/types.h>
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#include <fcntl.h>
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#include <link.h>
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#include <unistd.h>
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extern int _dl_argc;
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extern char **_dl_argv;
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extern char **_environ;
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Elf32_Addr
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_dl_sysdep_start (void **start_argptr,
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void (*dl_main) (const Elf32_Phdr *phdr, Elf32_Word phnum,
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Elf32_Addr *user_entry))
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{
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const Elf32_Phdr *phdr;
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Elf32_Word phnum;
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Elf32_Addr user_entry;
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Elf32_auxv_t *av;
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uid_t uid, euid;
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gid_t gid, egid;
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_dl_argc = *(int *) start_argptr;
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_dl_argv = start_argptr + 1;
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_environ = &_dl_argv[_dl_argc + 1];
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start_argptr = (void **) _environ;
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while (*start_argptr)
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++start_argptr;
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for (av = ++start_argptr; av->a_type != AT_NULL; ++av)
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switch (av->a_type)
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{
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case AT_PHDR:
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phdr = av->a_un.a_ptr;
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break;
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case AT_PHNUM:
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phnum = av->a_un.a_val;
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break;
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case AT_ENTRY:
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user_entry = av->a_un.a_val;
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case AT_UID:
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uid = av->a_un.a_val;
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break;
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case AT_GID:
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gid = av->a_un.a_val;
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break;
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case AT_EUID:
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euid = av->a_un.a_val;
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break;
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case AT_EGID:
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egid = av->a_un.a_val;
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break;
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}
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_dl_secure = uid != euid || gid != egid;
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(*dl_main) (phdr, phnum, &user_entry);
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start_argptr[-1] = (void *) user_entry;
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}
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int
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_dl_sysdep_open_zero_fill (void)
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{
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return open ("/dev/zero", O_RDONLY);
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}
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#include <stdarg.h>
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void
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_dl_sysdep_fatal (const char *msg, ...)
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{
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va_list ap;
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va_start (ap, msg);
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do
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{
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size_t len = strlen (msg);
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write (STDERR_FILENO, msg, len);
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msg = va_arg (ap, const char *);
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} while (msg);
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va_end (ap);
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_exit (127);
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}
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