C++ (Cpp) mmap_is_legacyの例

コード例 #1

ファイル: mmap_64.c プロジェクト: mikeberkelaar/grhardened

/*
 * This function, called very early during the creation of a new
 * process VM image, sets up which VM layout function to use:
 */
void arch_pick_mmap_layout(struct mm_struct *mm)
{
	/*
	 * Fall back to the standard layout if the personality
	 * bit is set, or if the expected stack growth is unlimited:
	 */
	if (mmap_is_legacy()) {
		mm->mmap_base = TASK_UNMAPPED_BASE;

#ifdef CONFIG_PAX_RANDMMAP
		if (mm->pax_flags & MF_PAX_RANDMMAP)
			mm->mmap_base += mm->delta_mmap;
#endif

		mm->get_unmapped_area = arch_get_unmapped_area;
		mm->unmap_area = arch_unmap_area;
	} else {
		mm->mmap_base = mmap_base();

#ifdef CONFIG_PAX_RANDMMAP
		if (mm->pax_flags & MF_PAX_RANDMMAP)
			mm->mmap_base -= mm->delta_mmap + mm->delta_stack;
#endif

		mm->get_unmapped_area = arch_get_unmapped_area_topdown;
		mm->unmap_area = arch_unmap_area_topdown;
	}
}

コード例 #2

/*
 * This function, called very early during the creation of a new
 * process VM image, sets up which VM layout function to use:
 */
static void arch_pick_mmap_base(unsigned long *base, unsigned long *legacy_base,
		unsigned long random_factor, unsigned long task_size)
{
	*legacy_base = mmap_legacy_base(random_factor, task_size);
	if (mmap_is_legacy())
		*base = *legacy_base;
	else
		*base = mmap_base(random_factor, task_size);
}

コード例 #3

ファイル: sys_parisc.c プロジェクト: pashkouski/linux

/*
 * This function, called very early during the creation of a new
 * process VM image, sets up which VM layout function to use:
 */
void arch_pick_mmap_layout(struct mm_struct *mm)
{
	mm->mmap_legacy_base = mmap_legacy_base();
	mm->mmap_base = mmap_upper_limit();

	if (mmap_is_legacy()) {
		mm->mmap_base = mm->mmap_legacy_base;
		mm->get_unmapped_area = arch_get_unmapped_area;
	} else {
		mm->get_unmapped_area = arch_get_unmapped_area_topdown;
	}
}

コード例 #4

ファイル: mmap.c プロジェクト: 03199618/linux

/*
 * This function, called very early during the creation of a new
 * process VM image, sets up which VM layout function to use:
 */
void arch_pick_mmap_layout(struct mm_struct *mm)
{
	/*
	 * Fall back to the standard layout if the personality
	 * bit is set, or if the expected stack growth is unlimited:
	 */
	if (mmap_is_legacy()) {
		mm->mmap_base = TASK_UNMAPPED_BASE;
		mm->get_unmapped_area = arch_get_unmapped_area;
	} else {
		mm->mmap_base = mmap_base();
		mm->get_unmapped_area = arch_get_unmapped_area_topdown;
	}
}

コード例 #5

ファイル: mmap.c プロジェクト: 285452612/ali_kernel

/*
 * This function, called very early during the creation of a new
 * process VM image, sets up which VM layout function to use:
 */
void arch_pick_mmap_layout(struct mm_struct *mm)
{
	if (!(2 & exec_shield) && mmap_is_legacy()) {
		mm->mmap_base = mmap_legacy_base();
		mm->get_unmapped_area = arch_get_unmapped_area;
		mm->unmap_area = arch_unmap_area;
	} else {
		mm->mmap_base = mmap_base();
		mm->get_unmapped_area = arch_get_unmapped_area_topdown;
		if (!(current->personality & READ_IMPLIES_EXEC)
		    && mmap_is_ia32())
			mm->get_unmapped_exec_area = arch_get_unmapped_exec_area;
		mm->unmap_area = arch_unmap_area_topdown;
	}
}

コード例 #6

ファイル: mmap.c プロジェクト: 0x7f454c46/linux

void arch_pick_mmap_layout(struct mm_struct *mm, struct rlimit *rlim_stack)
{
	unsigned long random_factor = 0UL;

	if (current->flags & PF_RANDOMIZE)
		random_factor = arch_mmap_rnd();

	if (mmap_is_legacy(rlim_stack)) {
		mm->mmap_base = TASK_UNMAPPED_BASE + random_factor;
		mm->get_unmapped_area = arch_get_unmapped_area;
	} else {
		mm->mmap_base = mmap_base(random_factor, rlim_stack);
		mm->get_unmapped_area = arch_get_unmapped_area_topdown;
	}
}

コード例 #7

ファイル: mmap.c プロジェクト: 0x000000FF/edison-linux

/*
 * This function, called very early during the creation of a new
 * process VM image, sets up which VM layout function to use:
 */
void arch_pick_mmap_layout(struct mm_struct *mm)
{
	unsigned long random_factor = 0UL;

	if (current->flags & PF_RANDOMIZE)
		random_factor = arch_mmap_rnd();

	mm->mmap_legacy_base = mmap_legacy_base(random_factor);

	if (mmap_is_legacy()) {
		mm->mmap_base = mm->mmap_legacy_base;
		mm->get_unmapped_area = arch_get_unmapped_area;
	} else {
		mm->mmap_base = mmap_base(random_factor);
		mm->get_unmapped_area = arch_get_unmapped_area_topdown;
	}
}

コード例 #8

ファイル: mmap.c プロジェクト: PivotalBigData/PivotalHD

/*
 * This function, called very early during the creation of a new
 * process VM image, sets up which VM layout function to use:
 */
void arch_pick_mmap_layout(struct mm_struct *mm)
{
	if (mmap_is_legacy()) {
		mm->mmap_base = mmap_legacy_base();
		mm->get_unmapped_area = arch_get_unmapped_area;
		mm->unmap_area = arch_unmap_area;
	} else {
		mm->mmap_base = mmap_base();
		mm->get_unmapped_area = arch_get_unmapped_area_topdown;
#ifdef CONFIG_X86_32
		if (!(current->personality & READ_IMPLIES_EXEC)
		    && !(__supported_pte_mask & _PAGE_NX)
		    && mmap_is_ia32())
			mm->get_unmapped_exec_area = arch_get_unmapped_exec_area;
#endif
		mm->unmap_area = arch_unmap_area_topdown;
	}
}

コード例 #9

ファイル: mmap.c プロジェクト: duki994/SM-G850_Kernel_LP

void arch_pick_mmap_layout(struct mm_struct *mm)
{
	unsigned long random_factor = 0UL;

	if ((current->flags & PF_RANDOMIZE) &&
	    !(current->personality & ADDR_NO_RANDOMIZE))
		random_factor = (get_random_int() % (1 << mmap_rnd_bits)) << PAGE_SHIFT;

	if (mmap_is_legacy()) {
		mm->mmap_base = TASK_UNMAPPED_BASE + random_factor;
		mm->get_unmapped_area = arch_get_unmapped_area;
		mm->unmap_area = arch_unmap_area;
	} else {
		mm->mmap_base = mmap_base(random_factor);
		mm->get_unmapped_area = arch_get_unmapped_area_topdown;
		mm->unmap_area = arch_unmap_area_topdown;
	}
}

コード例 #10

ファイル: mmap.c プロジェクト: CaptainThrowback/android_kernel_htc_pme

/*
 * This function, called very early during the creation of a new
 * process VM image, sets up which VM layout function to use:
 */
void arch_pick_mmap_layout(struct mm_struct *mm)
{
	unsigned long random_factor = 0UL;

	if (current->flags & PF_RANDOMIZE)
		random_factor = arch_mmap_rnd();

	/*
	 * Fall back to the standard layout if the personality
	 * bit is set, or if the expected stack growth is unlimited:
	 */
	if (mmap_is_legacy()) {
		mm->mmap_base = TASK_UNMAPPED_BASE;
		mm->get_unmapped_area = arch_get_unmapped_area;
	} else {
		mm->mmap_base = mmap_base(random_factor);
		mm->get_unmapped_area = arch_get_unmapped_area_topdown;
	}
}

コード例 #11

ファイル: mmap.c プロジェクト: 03199618/linux

void arch_pick_mmap_layout(struct mm_struct *mm)
{
	unsigned long random_factor = 0UL;

	if (current->flags & PF_RANDOMIZE) {
		random_factor = get_random_int();
		random_factor = random_factor << PAGE_SHIFT;
		if (TASK_IS_32BIT_ADDR)
			random_factor &= 0xfffffful;
		else
			random_factor &= 0xffffffful;
	}

	if (mmap_is_legacy()) {
		mm->mmap_base = TASK_UNMAPPED_BASE + random_factor;
		mm->get_unmapped_area = arch_get_unmapped_area;
	} else {
		mm->mmap_base = mmap_base(random_factor);
		mm->get_unmapped_area = arch_get_unmapped_area_topdown;
	}
}

コード例 #12

void arch_pick_mmap_layout(struct mm_struct *mm)
{
	if (mmap_is_legacy())
		mm->get_unmapped_area = arch_get_unmapped_area;
	else
		mm->get_unmapped_area = arch_get_unmapped_area_topdown;

	arch_pick_mmap_base(&mm->mmap_base, &mm->mmap_legacy_base,
			arch_rnd(mmap64_rnd_bits), tasksize_64bit());

#ifdef CONFIG_HAVE_ARCH_COMPAT_MMAP_BASES
	/*
	 * The mmap syscall mapping base decision depends solely on the
	 * syscall type (64-bit or compat). This applies for 64bit
	 * applications and 32bit applications. The 64bit syscall uses
	 * mmap_base, the compat syscall uses mmap_compat_base.
	 */
	arch_pick_mmap_base(&mm->mmap_compat_base, &mm->mmap_compat_legacy_base,
			arch_rnd(mmap32_rnd_bits), tasksize_32bit());
#endif
}

コード例 #13

ファイル: mmap.c プロジェクト: garyvan/openwrt-1.6

void arch_pick_mmap_layout(struct mm_struct *mm)
{
	unsigned long random_factor = 0UL;

#ifdef CONFIG_PAX_RANDMMAP
	if (!(mm->pax_flags & MF_PAX_RANDMMAP))
#endif

	if (current->flags & PF_RANDOMIZE) {
		random_factor = get_random_int();
		random_factor = random_factor << PAGE_SHIFT;
		if (TASK_IS_32BIT_ADDR)
			random_factor &= 0xfffffful;
		else
			random_factor &= 0xffffffful;
	}

	if (mmap_is_legacy()) {
		mm->mmap_base = TASK_UNMAPPED_BASE + random_factor;

#ifdef CONFIG_PAX_RANDMMAP
		if (mm->pax_flags & MF_PAX_RANDMMAP)
			mm->mmap_base += mm->delta_mmap;
#endif

		mm->get_unmapped_area = arch_get_unmapped_area;
		mm->unmap_area = arch_unmap_area;
	} else {
		mm->mmap_base = mmap_base(random_factor);

#ifdef CONFIG_PAX_RANDMMAP
		if (mm->pax_flags & MF_PAX_RANDMMAP)
			mm->mmap_base -= mm->delta_mmap + mm->delta_stack;
#endif

		mm->get_unmapped_area = arch_get_unmapped_area_topdown;
		mm->unmap_area = arch_unmap_area_topdown;
	}
}