diff options
Diffstat (limited to 'sysdeps/mach/hurd')
| -rw-r--r-- | sysdeps/mach/hurd/dl-sysdep.h | 8 | ||||
| -rw-r--r-- | sysdeps/mach/hurd/getpeername.c | 14 | ||||
| -rw-r--r-- | sysdeps/mach/hurd/i386/init-first.c | 25 | ||||
| -rw-r--r-- | sysdeps/mach/hurd/ioctl.c | 9 |
4 files changed, 38 insertions, 18 deletions
diff --git a/sysdeps/mach/hurd/dl-sysdep.h b/sysdeps/mach/hurd/dl-sysdep.h index 2dc9b0a910..4b21b779ef 100644 --- a/sysdeps/mach/hurd/dl-sysdep.h +++ b/sysdeps/mach/hurd/dl-sysdep.h @@ -1,5 +1,5 @@ /* System-specific settings for dynamic linker code. Hurd version. - Copyright (C) 2002 Free Software Foundation, Inc. + Copyright (C) 2002, 2005 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 @@ -23,3 +23,9 @@ (open, mmap, etc). */ #define RTLD_PRIVATE_ERRNO 0 + +#ifdef SHARED +/* _dl_argv cannot be attribute_relro, because the stack-switching + libc initializer for using cthreads might write into it. */ +# define DL_ARGV_NOT_RELRO 1 +#endif diff --git a/sysdeps/mach/hurd/getpeername.c b/sysdeps/mach/hurd/getpeername.c index 2e4f9f6a9d..325b6fd75d 100644 --- a/sysdeps/mach/hurd/getpeername.c +++ b/sysdeps/mach/hurd/getpeername.c @@ -1,4 +1,4 @@ -/* Copyright (C) 1992, 1994, 1997, 1999, 2000 Free Software Foundation, Inc. +/* Copyright (C) 1992,1994,1997,1999,2000,2005 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 @@ -47,14 +47,22 @@ __getpeername (int fd, __SOCKADDR_ARG addrarg, socklen_t *len) if (*len > buflen) *len = buflen; - + if (buf != (char *) addr) { memcpy (addr, buf, *len); __vm_deallocate (__mach_task_self (), (vm_address_t) buf, buflen); } - addr->sa_family = type; + const sa_family_t family = type; + if (*len > offsetof (struct sockaddr, sa_family)) + { + if (*len < (char *) (&addr->sa_family + 1) - (char *) addr) + memcpy (&addr->sa_family, &family, + *len - offsetof (struct sockaddr, sa_family)); + else + addr->sa_family = family; + } return 0; } diff --git a/sysdeps/mach/hurd/i386/init-first.c b/sysdeps/mach/hurd/i386/init-first.c index caa232026d..f9a7a58deb 100644 --- a/sysdeps/mach/hurd/i386/init-first.c +++ b/sysdeps/mach/hurd/i386/init-first.c @@ -1,5 +1,6 @@ /* Initialization code run first thing by the ELF startup code. For i386/Hurd. - Copyright (C) 1995,96,97,98,99,2000,01,02,03,04 Free Software Foundation, Inc. + Copyright (C) 1995,96,97,98,99,2000,01,02,03,04,05 + 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 @@ -54,7 +55,7 @@ extern int __libc_argc attribute_hidden; extern char **__libc_argv attribute_hidden; extern char **_dl_argv; -void *(*_cthread_init_routine) (void); /* Returns new SP to use. */ +extern void *(*_cthread_init_routine) (void) __attribute__ ((weak)); void (*_cthread_exit_routine) (int status) __attribute__ ((__noreturn__)); /* Things that want to be run before _hurd_init or much anything else. @@ -203,7 +204,7 @@ init (int *data) code as the return address, and the argument data immediately above that on the stack. */ - if (_cthread_init_routine) + if (&_cthread_init_routine && _cthread_init_routine) { /* Initialize cthreads, which will allocate us a new stack to run on. */ int *newsp = (*_cthread_init_routine) (); @@ -271,7 +272,7 @@ init (int *data) /* The argument data is just above the stack frame we will unwind by returning. Mutate our own return address to run the code below. */ usercode = data[-1]; - ((void **) data)[-1] = call_init1; + data[-1] = (int) &call_init1; /* Force USERCODE into %eax and &init1 into %ecx, which are not restored by function return. */ asm volatile ("# a %0 c %1" : : "a" (usercode), "c" (&init1)); @@ -319,11 +320,11 @@ first_init (void) stack set up just as the user will see it, so it can switch stacks. */ void -_dl_init_first (int argc, ...) +_dl_init_first (void) { first_init (); - init (&argc); + init ((int *) __builtin_frame_address (0) + 2); } #endif @@ -350,21 +351,23 @@ strong_alias (posixland_init, __libc_init_first); This poorly-named function is called by static-start.S, which should not exist at all. */ void -_hurd_stack_setup (volatile int argc, ...) +_hurd_stack_setup (void) { + intptr_t caller = (intptr_t) __builtin_return_address (0); + void doinit (intptr_t *data) { /* This function gets called with the argument data at TOS. */ - void doinit1 (volatile int argc, ...) + void doinit1 (void) { - init ((int *) &argc); + init ((int *) __builtin_frame_address (0) + 2); } /* Push the user return address after the argument data, and then jump to `doinit1' (above), so it is as if __libc_init_first's caller had called `doinit1' with the argument data already on the stack. */ - *--data = (&argc)[-1]; + *--data = caller; asm volatile ("movl %0, %%esp\n" /* Switch to new outermost stack. */ "movl $0, %%ebp\n" /* Clear outermost frame pointer. */ "jmp *%1" : : "r" (data), "r" (&doinit1) : "sp"); @@ -373,7 +376,7 @@ _hurd_stack_setup (volatile int argc, ...) first_init (); - _hurd_startup ((void **) &argc, &doinit); + _hurd_startup ((void **) __builtin_frame_address (0) + 2, &doinit); } #endif diff --git a/sysdeps/mach/hurd/ioctl.c b/sysdeps/mach/hurd/ioctl.c index 3d590d5845..6a540241a4 100644 --- a/sysdeps/mach/hurd/ioctl.c +++ b/sysdeps/mach/hurd/ioctl.c @@ -1,4 +1,5 @@ -/* Copyright (C) 1992,93,94,95,96,97,99,2000,02 Free Software Foundation, Inc. +/* Copyright (C) 1992,93,94,95,96,97,99,2000,2002,2005 + 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 @@ -136,9 +137,11 @@ __ioctl (int fd, unsigned long int request, ...) Rather than pointing to the value, ARG is the value itself. */ #ifdef MACH_MSG_TYPE_BIT *t++ = io2mach_type (1, _IOTS (integer_t)); - *((integer_t *) t)++ = (integer_t) arg; + *(integer_t *) t = (integer_t) arg; + t = (void *) t + sizeof (integer_t); #else - *((integer_t *) p)++ = (integer_t) arg; + *(integer_t *) p = (integer_t) arg; + p = (void *) p + sizeof (integer_t); #endif } |