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Sun Dec 15 01:53:20 1996 Ulrich Drepper <drepper@cygnus.com> * Makefile (subdirs): Change crypt to md5-crypt. * crypt/Makefile, crypt/md5-crypt.c, crypt/md5.c, crypt/md5.h, crypt/md5c-test.c, crypt/md5test.c: Move to new directory md5-crypt. * sysdeps/unix/sysv/linux/configure.in: Refer to linuxthreads and crypt instead of LinuxThreads and des-crypt. * Makefile (subdirs): Add nss back. * sysdeps/unix/inet/Subdirs: Move nis to end of file to fulfill dependencies. * libio/iofclose.c: Implement fclose(NULL) as closing all streams. * stdio-common/Makefile (routines): Add fcloseall. * stdio-common/fcloseall.c: New file. * sysdeps/generic/abort.c: Make implementation POSIX.1 compatible. * sysdeps/mach/libc-lock.h: Add definition of __libc_lock_trylock. * sysdeps/stub/libc-lock.h: Define __libc_lock_trylock to always return 0. * stdio-common/printf.h: Define MIN and MAX only if not already defined. * stdio-common/vfprintf.c: Set errno to EBADF if stream does not allow writing. Required by POSIX.1. * libio/libioP.h (CHECK_FILE): Use MAYBE_SET_EINVAL instead of assignment. * interp.c: Update copyright. * libio/clearerr.c: Likewise. * libio/ioseekoff.c: Likewise. * libio/ioseekpos.c: Likewise. * stdio/fclose.c: Likewise. * stdio/fflus.c: Likewise. * libio/libio.h [!_IO_MTSAFE_IO]: Define _IO_cleanup_region_start and _IO_cleanup_region_end as empty. * libio/fgetc.c: Use _IO_cleanup_region_start and _IO_cleanup_region_end instead of __libc_cleanup_region_start and __libc_cleanup_region_end. * libio/fputc.c: Likewise. * libio/freopen.c: Likewise. * libio/fseek.c: Likewise. * libio/getc.c: Likewise. * libio/getchar.c: Likewise. * libio/iofclose.c: Likewise. * libio/iofflush.c: Likewise. * libio/iofgetpos.c: Likewise. * libio/iofgets.c: Likewise. * libio/iofputs.c: Likewise. * libio/iofread.c: Likewise. * libio/iofsetpos.c: Likewise. * libio/ioftell.c: Likewise. * libio/iofwrite.c: Likewise. * libio/iogetdelim.c: Likewise. * libio/iogets.c: Likewise. * libio/ioputs.c: Likewise. * libio/iosetbuffer.c: Likewise. * libio/iosetvbuf.c: Likewise. * libio/ioungetc.c: Likewise. * libio/iovspintf.c: Use cleanup handler to make sure no dangling locks can stay over. * libio/iovsscanf.c: Likewise. * libio/genops.c: Use _IO_lock_init_recursive and _IO_lock_fini instead of __libc_lock_init_recursive and __libc_lock_fini. * libio/filedoalloc.c: Only use __isatty when compiling GNU libc. Otherwise use isatty. * libio/fileops.c: Likewise for __open and open. * login/utmp_file.c (getutent_r_file): Use fcntl instead of flock. * nis/ypclnt.h: Add more casts to prevent warnings. * nss/Makefile (services): Remove dns. (libnss_dns, libnss_dns-inhibit-o): Remove definition. ($(objpfx)libnss_dns.so): Removed. * nss/nss_dns/dns-host.c, nss/nss_dns/dns-network.c: Moved to... * resolv/nss_dns: ...here. * resolv/Makefile (extra-libs): Add libnss_dns. (libnss_dns-routines, libnss_dns-inhibit-o): Define as in nss/Makefile. * nss/XXX-lookup.c: Call __nss_database_lookup with new argument specifying alternate name for entry in /etc/nsswitch.conf * nss/nsswitch.c: If no entry with primary name is found in /etc/nsswitch.conf try alternate name if given. * nss/nsswitch.h: Add new parameter in prototype for __nss_database_lookup. * nss/spwd-lookup.c: Provide alternative entry name to look for. This makes our NSS compatible with Solaris' nsswitch.conf files. * string/tst-strlen.c: Change all counting variables to type size_t to prevent warnings. * sysdeps/posix/fpathconf.c: Update copyright. * sysdeps/posix/pathconf.c: Don't call fpathconf to do the work. Opening the file at this path may fail if it is a FIFO or pipe. These changes make the time implementation POSIX.1 compliant. * time/localtime.c (__localtime_r): Always call __tzset not only if __tzset_run is zero. * time/strftime.c: Add definition of memset_space to help to reduce for systems which have memset. (strftime): Don't use tm_zone member of argument for zone name. Instead always use tzname[]. Call tzset() as required by POSIX.1 before any action. * time/tzset.c (tzset): Set tzname[] as required by POSIX.1. Remove global variable __tzset_run. __tzset is now called always when a dependent function is used. (__tzset): Caching happens based on the contents of the environment variable TZ. Fri Dec 13 01:06:52 1996 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * sysdeps/unix/sysv/linux/paths.h: Add _PATH_KLOG. Thu Dec 12 09:16:35 1996 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * rellns-sh: Correctly handle a relative source file name. Wed Dec 11 19:18:40 1996 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * login/utmp_file.c (setutent_file): Seek back to beginning of the file if resetting. Thu Dec 12 16:39:12 1996 Thomas Bushnell, n/BSG <thomas@gnu.ai.mit.edu> * hurd/hurdinit.c (map0): Delete function. Don't do this on _hurd_preinit_hook. * hurd/hurdstartup.c (_hurd_startup): Map page zero redzone here.
206 lines
6.8 KiB
C
206 lines
6.8 KiB
C
/* Initial program startup for running under the GNU Hurd.
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Copyright (C) 1991, 92, 93, 94, 95, 96 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 <errno.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <hurd.h>
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#include <hurd/exec_startup.h>
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#include <sysdep.h>
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#include <hurd/threadvar.h>
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#include <unistd.h>
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#include <elf.h>
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#include "set-hooks.h"
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#include "hurdmalloc.h" /* XXX */
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#include "hurdstartup.h"
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#include <argz.h>
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mach_port_t *_hurd_init_dtable;
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mach_msg_type_number_t _hurd_init_dtablesize;
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unsigned int __hurd_threadvar_max;
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unsigned long int __hurd_threadvar_stack_mask;
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unsigned long int __hurd_threadvar_stack_offset;
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/* These are set up by _hurdsig_init. */
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unsigned long int __hurd_sigthread_stack_base;
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unsigned long int __hurd_sigthread_stack_end;
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unsigned long int *__hurd_sigthread_variables;
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extern void __mach_init (void);
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/* Entry point. This is the first thing in the text segment.
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The exec server started the initial thread in our task with this spot the
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PC, and a stack that is presumably big enough. We do basic Mach
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initialization so mig-generated stubs work, and then do an exec_startup
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RPC on our bootstrap port, to which the exec server responds with the
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information passed in the exec call, as well as our original bootstrap
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port, and the base address and size of the preallocated stack.
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If using cthreads, we are given a new stack by cthreads initialization and
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deallocate the stack set up by the exec server. On the new stack we call
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`start1' (above) to do the rest of the startup work. Since the stack may
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disappear out from under us in a machine-dependent way, we use a pile of
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static variables to communicate the information from exec_startup to start1.
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This is unfortunate but preferable to machine-dependent frobnication to copy
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the state from the old stack to the new one. */
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void
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_hurd_startup (void **argptr, void (*main) (int *data))
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{
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error_t err;
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mach_port_t in_bootstrap;
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char *args, *env;
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mach_msg_type_number_t argslen, envlen;
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struct hurd_startup_data data;
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char **argv, **envp;
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int argc, envc;
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int *argcptr;
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vm_address_t addr;
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/* Attempt to map page zero redzoned before we receive any RPC
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data that might get allocated there. We can ignore errors. */
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addr = 0;
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__vm_map (__mach_task_self (),
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&addr, __vm_page_size, 0, 0, MACH_PORT_NULL, 0, 1,
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VM_PROT_NONE, VM_PROT_NONE, VM_INHERIT_COPY);
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if (err = __task_get_special_port (__mach_task_self (), TASK_BOOTSTRAP_PORT,
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&in_bootstrap))
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LOSE;
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if (in_bootstrap != MACH_PORT_NULL)
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{
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/* Call the exec server on our bootstrap port and
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get all our standard information from it. */
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argslen = envlen = 0;
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data.dtablesize = data.portarraysize = data.intarraysize = 0;
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err = __exec_startup_get_info (in_bootstrap,
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&data.user_entry,
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&data.phdr, &data.phdrsz,
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&data.stack_base, &data.stack_size,
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&data.flags,
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&args, &argslen,
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&env, &envlen,
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&data.dtable, &data.dtablesize,
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&data.portarray, &data.portarraysize,
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&data.intarray, &data.intarraysize);
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__mach_port_deallocate (__mach_task_self (), in_bootstrap);
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}
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if (err || in_bootstrap == MACH_PORT_NULL || (data.flags & EXEC_STACK_ARGS))
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{
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/* Either we have no bootstrap port, or the RPC to the exec server
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failed, or whoever started us up passed the flag saying args are
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on the stack. Try to snarf the args in the canonical Mach way.
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Hopefully either they will be on the stack as expected, or the
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stack will be zeros so we don't crash. */
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argcptr = (int *) argptr;
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argc = argcptr[0];
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argv = (char **) &argcptr[1];
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envp = &argv[argc + 1];
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envc = 0;
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while (envp[envc])
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++envc;
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}
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else
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{
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/* Turn the block of null-separated strings we were passed for the
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arguments and environment into vectors of pointers to strings. */
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/* Count up the arguments so we can allocate ARGV. */
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argc = __argz_count (args, argslen);
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/* Count up the environment variables so we can allocate ENVP. */
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envc = __argz_count (env, envlen);
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/* There were some arguments. Allocate space for the vectors of
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pointers and fill them in. We allocate the space for the
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environment pointers immediately after the argv pointers because
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the ELF ABI will expect it. */
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argcptr = __alloca (sizeof (int) +
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(argc + 1 + envc + 1) * sizeof (char *) +
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sizeof (struct hurd_startup_data));
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*argcptr = argc;
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argv = (void *) (argcptr + 1);
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__argz_extract (args, argslen, argv);
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/* There was some environment. */
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envp = &argv[argc + 1];
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__argz_extract (env, envlen, envp);
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}
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if (err || in_bootstrap == MACH_PORT_NULL)
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{
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/* Either we have no bootstrap port, or the RPC to the exec server
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failed. Set all our other variables to have empty information. */
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data.flags = 0;
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args = env = NULL;
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argslen = envlen = 0;
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data.dtable = NULL;
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data.dtablesize = 0;
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data.portarray = NULL;
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data.portarraysize = 0;
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data.intarray = NULL;
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data.intarraysize = 0;
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}
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else if ((void *) &envp[envc + 1] == argv[0])
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{
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/* The arguments arrived on the stack from the kernel, but our
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protocol requires some space after them for a `struct
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hurd_startup_data'. Move them. */
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struct
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{
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int count;
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char *argv[argc + 1];
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char *envp[envc + 1];
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struct hurd_startup_data data;
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} *args = alloca (sizeof *args);
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if ((void *) &args[1] == (void *) argcptr)
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args = alloca (-((char *) &args->data - (char *) args));
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memmove (args, argcptr, (char *) &args->data - (char *) args);
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argcptr = (void *) args;
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argv = args->argv;
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envp = args->envp;
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}
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{
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struct hurd_startup_data *d = (void *) &envp[envc + 1];
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if ((void *) d != argv[0])
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{
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*d = data;
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_hurd_init_dtable = d->dtable;
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_hurd_init_dtablesize = d->dtablesize;
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}
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(*main) (argcptr);
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}
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/* Should never get here. */
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LOSE;
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abort ();
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}
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