[linux-2.6-block.git] / arch / parisc / kernel / sys_parisc.c


/*
 *    PARISC specific syscalls
 *
 *    Copyright (C) 1999-2003 Matthew Wilcox <willy at parisc-linux.org>
 *    Copyright (C) 2000-2003 Paul Bame <bame at parisc-linux.org>
 *    Copyright (C) 2001 Thomas Bogendoerfer <tsbogend at parisc-linux.org>
 *    Copyright (C) 1999-2014 Helge Deller <deller@gmx.de>
 *
 *
 *    This program is free software; you can redistribute it and/or modify
 *    it under the terms of the GNU General Public License as published by
 *    the Free Software Foundation; either version 2 of the License, or
 *    (at your option) any later version.
 *
 *    This program 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 General Public License for more details.
 *
 *    You should have received a copy of the GNU General Public License
 *    along with this program; if not, write to the Free Software
 *    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

#include <asm/uaccess.h>
#include <asm/elf.h>
#include <linux/file.h>
#include <linux/fs.h>
#include <linux/linkage.h>
#include <linux/mm.h>
#include <linux/mman.h>
#include <linux/shm.h>
#include <linux/syscalls.h>
#include <linux/utsname.h>
#include <linux/personality.h>
#include <linux/random.h>

/* we construct an artificial offset for the mapping based on the physical
 * address of the kernel mapping variable */
#define GET_LAST_MMAP(filp)		\
	(filp ? ((unsigned long) filp->f_mapping) >> 8 : 0UL)
#define SET_LAST_MMAP(filp, val)	\
	 { /* nothing */ }

static int get_offset(unsigned int last_mmap)
{
	return (last_mmap & (SHM_COLOUR-1)) >> PAGE_SHIFT;
}

static unsigned long shared_align_offset(unsigned int last_mmap,
					 unsigned long pgoff)
{
	return (get_offset(last_mmap) + pgoff) << PAGE_SHIFT;
}

static inline unsigned long COLOR_ALIGN(unsigned long addr,
			 unsigned int last_mmap, unsigned long pgoff)
{
	unsigned long base = (addr+SHM_COLOUR-1) & ~(SHM_COLOUR-1);
	unsigned long off  = (SHM_COLOUR-1) &
		(shared_align_offset(last_mmap, pgoff) << PAGE_SHIFT);

	return base + off;
}

/*
 * Top of mmap area (just below the process stack).
 */

static unsigned long mmap_upper_limit(void)
{
	unsigned long stack_base;

	/* Limit stack size - see setup_arg_pages() in fs/exec.c */
	stack_base = rlimit_max(RLIMIT_STACK);
	if (stack_base > STACK_SIZE_MAX)
		stack_base = STACK_SIZE_MAX;

	return PAGE_ALIGN(STACK_TOP - stack_base);
}


unsigned long arch_get_unmapped_area(struct file *filp, unsigned long addr,
		unsigned long len, unsigned long pgoff, unsigned long flags)
{
	struct mm_struct *mm = current->mm;
	struct vm_area_struct *vma;
	unsigned long task_size = TASK_SIZE;
	int do_color_align, last_mmap;
	struct vm_unmapped_area_info info;

	if (len > task_size)
		return -ENOMEM;

	do_color_align = 0;
	if (filp || (flags & MAP_SHARED))
		do_color_align = 1;
	last_mmap = GET_LAST_MMAP(filp);

	if (flags & MAP_FIXED) {
		if ((flags & MAP_SHARED) && last_mmap &&
		    (addr - shared_align_offset(last_mmap, pgoff))
				& (SHM_COLOUR - 1))
			return -EINVAL;
		goto found_addr;
	}

	if (addr) {
		if (do_color_align && last_mmap)
			addr = COLOR_ALIGN(addr, last_mmap, pgoff);
		else
			addr = PAGE_ALIGN(addr);

		vma = find_vma(mm, addr);
		if (task_size - len >= addr &&
		    (!vma || addr + len <= vma->vm_start))
			goto found_addr;
	}

	info.flags = 0;
	info.length = len;
	info.low_limit = mm->mmap_legacy_base;
	info.high_limit = mmap_upper_limit();
	info.align_mask = last_mmap ? (PAGE_MASK & (SHM_COLOUR - 1)) : 0;
	info.align_offset = shared_align_offset(last_mmap, pgoff);
	addr = vm_unmapped_area(&info);

found_addr:
	if (do_color_align && !last_mmap && !(addr & ~PAGE_MASK))
		SET_LAST_MMAP(filp, addr - (pgoff << PAGE_SHIFT));

	return addr;
}

unsigned long
arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0,
			  const unsigned long len, const unsigned long pgoff,
			  const unsigned long flags)
{
	struct vm_area_struct *vma;
	struct mm_struct *mm = current->mm;
	unsigned long addr = addr0;
	int do_color_align, last_mmap;
	struct vm_unmapped_area_info info;

#ifdef CONFIG_64BIT
	/* This should only ever run for 32-bit processes.  */
	BUG_ON(!test_thread_flag(TIF_32BIT));
#endif

	/* requested length too big for entire address space */
	if (len > TASK_SIZE)
		return -ENOMEM;

	do_color_align = 0;
	if (filp || (flags & MAP_SHARED))
		do_color_align = 1;
	last_mmap = GET_LAST_MMAP(filp);

	if (flags & MAP_FIXED) {
		if ((flags & MAP_SHARED) && last_mmap &&
		    (addr - shared_align_offset(last_mmap, pgoff))
			& (SHM_COLOUR - 1))
			return -EINVAL;
		goto found_addr;
	}

	/* requesting a specific address */
	if (addr) {
		if (do_color_align && last_mmap)
			addr = COLOR_ALIGN(addr, last_mmap, pgoff);
		else
			addr = PAGE_ALIGN(addr);
		vma = find_vma(mm, addr);
		if (TASK_SIZE - len >= addr &&
		    (!vma || addr + len <= vma->vm_start))
			goto found_addr;
	}

	info.flags = VM_UNMAPPED_AREA_TOPDOWN;
	info.length = len;
	info.low_limit = PAGE_SIZE;
	info.high_limit = mm->mmap_base;
	info.align_mask = last_mmap ? (PAGE_MASK & (SHM_COLOUR - 1)) : 0;
	info.align_offset = shared_align_offset(last_mmap, pgoff);
	addr = vm_unmapped_area(&info);
	if (!(addr & ~PAGE_MASK))
		goto found_addr;
	VM_BUG_ON(addr != -ENOMEM);

	/*
	 * A failed mmap() very likely causes application failure,
	 * so fall back to the bottom-up function here. This scenario
	 * can happen with large stack limits and large mmap()
	 * allocations.
	 */
	return arch_get_unmapped_area(filp, addr0, len, pgoff, flags);

found_addr:
	if (do_color_align && !last_mmap && !(addr & ~PAGE_MASK))
		SET_LAST_MMAP(filp, addr - (pgoff << PAGE_SHIFT));

	return addr;
}

static int mmap_is_legacy(void)
{
	if (current->personality & ADDR_COMPAT_LAYOUT)
		return 1;

	/* parisc stack always grows up - so a unlimited stack should
	 * not be an indicator to use the legacy memory layout.
	 * if (rlimit(RLIMIT_STACK) == RLIM_INFINITY)
	 *	return 1;
	 */

	return sysctl_legacy_va_layout;
}

static unsigned long mmap_rnd(void)
{
	unsigned long rnd = 0;

	/*
	*  8 bits of randomness in 32bit mmaps, 20 address space bits
	* 28 bits of randomness in 64bit mmaps, 40 address space bits
	*/
	if (current->flags & PF_RANDOMIZE) {
		if (is_32bit_task())
			rnd = get_random_int() % (1<<8);
		else
			rnd = get_random_int() % (1<<28);
	}
	return rnd << PAGE_SHIFT;
}

static unsigned long mmap_legacy_base(void)
{
	return TASK_UNMAPPED_BASE + mmap_rnd();
}

/*
 * 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;
	}
}


asmlinkage unsigned long sys_mmap2(unsigned long addr, unsigned long len,
	unsigned long prot, unsigned long flags, unsigned long fd,
	unsigned long pgoff)
{
	/* Make sure the shift for mmap2 is constant (12), no matter what PAGE_SIZE
	   we have. */
	return sys_mmap_pgoff(addr, len, prot, flags, fd,
			      pgoff >> (PAGE_SHIFT - 12));
}

asmlinkage unsigned long sys_mmap(unsigned long addr, unsigned long len,
		unsigned long prot, unsigned long flags, unsigned long fd,
		unsigned long offset)
{
	if (!(offset & ~PAGE_MASK)) {
		return sys_mmap_pgoff(addr, len, prot, flags, fd,
					offset >> PAGE_SHIFT);
	} else {
		return -EINVAL;
	}
}

/* Fucking broken ABI */

#ifdef CONFIG_64BIT
asmlinkage long parisc_truncate64(const char __user * path,
					unsigned int high, unsigned int low)
{
	return sys_truncate(path, (long)high << 32 | low);
}

asmlinkage long parisc_ftruncate64(unsigned int fd,
					unsigned int high, unsigned int low)
{
	return sys_ftruncate(fd, (long)high << 32 | low);
}

/* stubs for the benefit of the syscall_table since truncate64 and truncate 
 * are identical on LP64 */
asmlinkage long sys_truncate64(const char __user * path, unsigned long length)
{
	return sys_truncate(path, length);
}
asmlinkage long sys_ftruncate64(unsigned int fd, unsigned long length)
{
	return sys_ftruncate(fd, length);
}
asmlinkage long sys_fcntl64(unsigned int fd, unsigned int cmd, unsigned long arg)
{
	return sys_fcntl(fd, cmd, arg);
}
#else

asmlinkage long parisc_truncate64(const char __user * path,
					unsigned int high, unsigned int low)
{
	return sys_truncate64(path, (loff_t)high << 32 | low);
}

asmlinkage long parisc_ftruncate64(unsigned int fd,
					unsigned int high, unsigned int low)
{
	return sys_ftruncate64(fd, (loff_t)high << 32 | low);
}
#endif

asmlinkage ssize_t parisc_pread64(unsigned int fd, char __user *buf, size_t count,
					unsigned int high, unsigned int low)
{
	return sys_pread64(fd, buf, count, (loff_t)high << 32 | low);
}

asmlinkage ssize_t parisc_pwrite64(unsigned int fd, const char __user *buf,
			size_t count, unsigned int high, unsigned int low)
{
	return sys_pwrite64(fd, buf, count, (loff_t)high << 32 | low);
}

asmlinkage ssize_t parisc_readahead(int fd, unsigned int high, unsigned int low,
		                    size_t count)
{
	return sys_readahead(fd, (loff_t)high << 32 | low, count);
}

asmlinkage long parisc_fadvise64_64(int fd,
			unsigned int high_off, unsigned int low_off,
			unsigned int high_len, unsigned int low_len, int advice)
{
	return sys_fadvise64_64(fd, (loff_t)high_off << 32 | low_off,
			(loff_t)high_len << 32 | low_len, advice);
}

asmlinkage long parisc_sync_file_range(int fd,
			u32 hi_off, u32 lo_off, u32 hi_nbytes, u32 lo_nbytes,
			unsigned int flags)
{
	return sys_sync_file_range(fd, (loff_t)hi_off << 32 | lo_off,
			(loff_t)hi_nbytes << 32 | lo_nbytes, flags);
}

asmlinkage long parisc_fallocate(int fd, int mode, u32 offhi, u32 offlo,
				u32 lenhi, u32 lenlo)
{
        return sys_fallocate(fd, mode, ((u64)offhi << 32) | offlo,
                             ((u64)lenhi << 32) | lenlo);
}

asmlinkage unsigned long sys_alloc_hugepages(int key, unsigned long addr, unsigned long len, int prot, int flag)
{
	return -ENOMEM;
}

asmlinkage int sys_free_hugepages(unsigned long addr)
{
	return -EINVAL;
}

long parisc_personality(unsigned long personality)
{
	long err;

	if (personality(current->personality) == PER_LINUX32
	    && personality(personality) == PER_LINUX)
		personality = (personality & ~PER_MASK) | PER_LINUX32;

	err = sys_personality(personality);
	if (personality(err) == PER_LINUX32)
		err = (err & ~PER_MASK) | PER_LINUX;

	return err;
}
Commit	Line	Data
1da177e4 LT	1
	2	/*
	3	* PARISC specific syscalls
	4	*
	5	* Copyright (C) 1999-2003 Matthew Wilcox <willy at parisc-linux.org>
	6	* Copyright (C) 2000-2003 Paul Bame <bame at parisc-linux.org>
	7	* Copyright (C) 2001 Thomas Bogendoerfer <tsbogend at parisc-linux.org>
9dabf60d	8	* Copyright (C) 1999-2014 Helge Deller <deller@gmx.de>
1da177e4 LT	9	*
	10	*
	11	* This program is free software; you can redistribute it and/or modify
	12	* it under the terms of the GNU General Public License as published by
	13	* the Free Software Foundation; either version 2 of the License, or
	14	* (at your option) any later version.
	15	*
	16	* This program is distributed in the hope that it will be useful,
	17	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	18	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	19	* GNU General Public License for more details.
	20	*
	21	* You should have received a copy of the GNU General Public License
	22	* along with this program; if not, write to the Free Software
	23	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	24	*/
	25
	26	#include <asm/uaccess.h>
9dabf60d	27	#include <asm/elf.h>
1da177e4 LT	28	#include <linux/file.h>
	29	#include <linux/fs.h>
	30	#include <linux/linkage.h>
	31	#include <linux/mm.h>
	32	#include <linux/mman.h>
	33	#include <linux/shm.h>
1da177e4	34	#include <linux/syscalls.h>
75a49581 KM	35	#include <linux/utsname.h>
75a49581 KM	36	#include <linux/personality.h>
9dabf60d	37	#include <linux/random.h>
1da177e4	38
9dabf60d HD	39	/* we construct an artificial offset for the mapping based on the physical
	40	* address of the kernel mapping variable */
	41	#define GET_LAST_MMAP(filp) \
	42	(filp ? ((unsigned long) filp->f_mapping) >> 8 : 0UL)
	43	#define SET_LAST_MMAP(filp, val) \
	44	{ /* nothing */ }
	45
	46	static int get_offset(unsigned int last_mmap)
1da177e4	47	{
0ef36bd2	48	return (last_mmap & (SHM_COLOUR-1)) >> PAGE_SHIFT;
9dabf60d	49	}
1da177e4	50
9dabf60d HD	51	static unsigned long shared_align_offset(unsigned int last_mmap,
	52	unsigned long pgoff)
	53	{
	54	return (get_offset(last_mmap) + pgoff) << PAGE_SHIFT;
1da177e4 LT	55	}
1da177e4 LT	56
9dabf60d HD	57	static inline unsigned long COLOR_ALIGN(unsigned long addr,
9dabf60d HD	58	unsigned int last_mmap, unsigned long pgoff)
1da177e4	59	{
0ef36bd2 HD	60	unsigned long base = (addr+SHM_COLOUR-1) & ~(SHM_COLOUR-1);
0ef36bd2 HD	61	unsigned long off = (SHM_COLOUR-1) &
9dabf60d HD	62	(shared_align_offset(last_mmap, pgoff) << PAGE_SHIFT);
	63
	64	return base + off;
1da177e4 LT	65	}
1da177e4 LT	66
9dabf60d HD	67	/*
	68	* Top of mmap area (just below the process stack).
	69	*/
	70
	71	static unsigned long mmap_upper_limit(void)
0576da2c	72	{
9dabf60d	73	unsigned long stack_base;
0576da2c	74
042d27ac	75	/* Limit stack size - see setup_arg_pages() in fs/exec.c */
9dabf60d	76	stack_base = rlimit_max(RLIMIT_STACK);
042d27ac HD	77	if (stack_base > STACK_SIZE_MAX)
042d27ac HD	78	stack_base = STACK_SIZE_MAX;
9dabf60d HD	79
9dabf60d HD	80	return PAGE_ALIGN(STACK_TOP - stack_base);
0576da2c HD	81	}
0576da2c HD	82
9dabf60d HD	83
	84	unsigned long arch_get_unmapped_area(struct file *filp, unsigned long addr,
	85	unsigned long len, unsigned long pgoff, unsigned long flags)
1da177e4	86	{
9dabf60d HD	87	struct mm_struct *mm = current->mm;
	88	struct vm_area_struct *vma;
	89	unsigned long task_size = TASK_SIZE;
	90	int do_color_align, last_mmap;
a0031197	91	struct vm_unmapped_area_info info;
1da177e4	92
9dabf60d HD	93	if (len > task_size)
	94	return -ENOMEM;
	95
	96	do_color_align = 0;
	97	if (filp \|\| (flags & MAP_SHARED))
	98	do_color_align = 1;
	99	last_mmap = GET_LAST_MMAP(filp);
	100
	101	if (flags & MAP_FIXED) {
	102	if ((flags & MAP_SHARED) && last_mmap &&
	103	(addr - shared_align_offset(last_mmap, pgoff))
0ef36bd2	104	& (SHM_COLOUR - 1))
9dabf60d HD	105	return -EINVAL;
	106	goto found_addr;
	107	}
	108
	109	if (addr) {
	110	if (do_color_align && last_mmap)
	111	addr = COLOR_ALIGN(addr, last_mmap, pgoff);
	112	else
	113	addr = PAGE_ALIGN(addr);
	114
	115	vma = find_vma(mm, addr);
	116	if (task_size - len >= addr &&
	117	(!vma \|\| addr + len <= vma->vm_start))
	118	goto found_addr;
	119	}
	120
a0031197 ML	121	info.flags = 0;
a0031197 ML	122	info.length = len;
9dabf60d HD	123	info.low_limit = mm->mmap_legacy_base;
9dabf60d HD	124	info.high_limit = mmap_upper_limit();
0ef36bd2	125	info.align_mask = last_mmap ? (PAGE_MASK & (SHM_COLOUR - 1)) : 0;
9dabf60d HD	126	info.align_offset = shared_align_offset(last_mmap, pgoff);
	127	addr = vm_unmapped_area(&info);
	128
	129	found_addr:
	130	if (do_color_align && !last_mmap && !(addr & ~PAGE_MASK))
	131	SET_LAST_MMAP(filp, addr - (pgoff << PAGE_SHIFT));
	132
	133	return addr;
1da177e4 LT	134	}
1da177e4 LT	135
9dabf60d HD	136	unsigned long
	137	arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0,
	138	const unsigned long len, const unsigned long pgoff,
	139	const unsigned long flags)
1da177e4	140	{
9dabf60d HD	141	struct vm_area_struct *vma;
	142	struct mm_struct *mm = current->mm;
	143	unsigned long addr = addr0;
	144	int do_color_align, last_mmap;
	145	struct vm_unmapped_area_info info;
	146
	147	#ifdef CONFIG_64BIT
	148	/* This should only ever run for 32-bit processes. */
	149	BUG_ON(!test_thread_flag(TIF_32BIT));
	150	#endif
	151
	152	/* requested length too big for entire address space */
1da177e4 LT	153	if (len > TASK_SIZE)
1da177e4 LT	154	return -ENOMEM;
9dabf60d HD	155
	156	do_color_align = 0;
	157	if (filp \|\| (flags & MAP_SHARED))
	158	do_color_align = 1;
	159	last_mmap = GET_LAST_MMAP(filp);
	160
5ca8b91d	161	if (flags & MAP_FIXED) {
9dabf60d HD	162	if ((flags & MAP_SHARED) && last_mmap &&
9dabf60d HD	163	(addr - shared_align_offset(last_mmap, pgoff))
0ef36bd2	164	& (SHM_COLOUR - 1))
5ca8b91d	165	return -EINVAL;
9dabf60d	166	goto found_addr;
5ca8b91d	167	}
1da177e4	168
9dabf60d HD	169	/* requesting a specific address */
	170	if (addr) {
	171	if (do_color_align && last_mmap)
	172	addr = COLOR_ALIGN(addr, last_mmap, pgoff);
	173	else
	174	addr = PAGE_ALIGN(addr);
	175	vma = find_vma(mm, addr);
	176	if (TASK_SIZE - len >= addr &&
	177	(!vma \|\| addr + len <= vma->vm_start))
	178	goto found_addr;
	179	}
	180
	181	info.flags = VM_UNMAPPED_AREA_TOPDOWN;
	182	info.length = len;
	183	info.low_limit = PAGE_SIZE;
	184	info.high_limit = mm->mmap_base;
0ef36bd2	185	info.align_mask = last_mmap ? (PAGE_MASK & (SHM_COLOUR - 1)) : 0;
9dabf60d HD	186	info.align_offset = shared_align_offset(last_mmap, pgoff);
	187	addr = vm_unmapped_area(&info);
	188	if (!(addr & ~PAGE_MASK))
	189	goto found_addr;
	190	VM_BUG_ON(addr != -ENOMEM);
	191
	192	/*
	193	* A failed mmap() very likely causes application failure,
	194	* so fall back to the bottom-up function here. This scenario
	195	* can happen with large stack limits and large mmap()
	196	* allocations.
	197	*/
	198	return arch_get_unmapped_area(filp, addr0, len, pgoff, flags);
	199
	200	found_addr:
	201	if (do_color_align && !last_mmap && !(addr & ~PAGE_MASK))
	202	SET_LAST_MMAP(filp, addr - (pgoff << PAGE_SHIFT));
0576da2c	203
1da177e4 LT	204	return addr;
	205	}
	206
9dabf60d HD	207	static int mmap_is_legacy(void)
	208	{
	209	if (current->personality & ADDR_COMPAT_LAYOUT)
	210	return 1;
	211
	212	/* parisc stack always grows up - so a unlimited stack should
	213	* not be an indicator to use the legacy memory layout.
	214	* if (rlimit(RLIMIT_STACK) == RLIM_INFINITY)
	215	* return 1;
	216	*/
	217
	218	return sysctl_legacy_va_layout;
	219	}
	220
	221	static unsigned long mmap_rnd(void)
	222	{
	223	unsigned long rnd = 0;
	224
	225	/*
	226	* 8 bits of randomness in 32bit mmaps, 20 address space bits
	227	* 28 bits of randomness in 64bit mmaps, 40 address space bits
	228	*/
	229	if (current->flags & PF_RANDOMIZE) {
	230	if (is_32bit_task())
	231	rnd = get_random_int() % (1<<8);
	232	else
	233	rnd = get_random_int() % (1<<28);
	234	}
	235	return rnd << PAGE_SHIFT;
	236	}
	237
	238	static unsigned long mmap_legacy_base(void)
	239	{
	240	return TASK_UNMAPPED_BASE + mmap_rnd();
	241	}
	242
	243	/*
	244	* This function, called very early during the creation of a new
	245	* process VM image, sets up which VM layout function to use:
	246	*/
	247	void arch_pick_mmap_layout(struct mm_struct *mm)
	248	{
	249	mm->mmap_legacy_base = mmap_legacy_base();
	250	mm->mmap_base = mmap_upper_limit();
	251
	252	if (mmap_is_legacy()) {
	253	mm->mmap_base = mm->mmap_legacy_base;
	254	mm->get_unmapped_area = arch_get_unmapped_area;
	255	} else {
	256	mm->get_unmapped_area = arch_get_unmapped_area_topdown;
	257	}
	258	}
	259
	260
1da177e4 LT	261	asmlinkage unsigned long sys_mmap2(unsigned long addr, unsigned long len,
	262	unsigned long prot, unsigned long flags, unsigned long fd,
	263	unsigned long pgoff)
	264	{
	265	/* Make sure the shift for mmap2 is constant (12), no matter what PAGE_SIZE
	266	we have. */
f8b72560 AV	267	return sys_mmap_pgoff(addr, len, prot, flags, fd,
f8b72560 AV	268	pgoff >> (PAGE_SHIFT - 12));
1da177e4 LT	269	}
	270
	271	asmlinkage unsigned long sys_mmap(unsigned long addr, unsigned long len,
	272	unsigned long prot, unsigned long flags, unsigned long fd,
	273	unsigned long offset)
	274	{
	275	if (!(offset & ~PAGE_MASK)) {
f8b72560 AV	276	return sys_mmap_pgoff(addr, len, prot, flags, fd,
f8b72560 AV	277	offset >> PAGE_SHIFT);
1da177e4 LT	278	} else {
	279	return -EINVAL;
	280	}
	281	}
	282
1da177e4 LT	283	/* Fucking broken ABI */
	284
	285	#ifdef CONFIG_64BIT
	286	asmlinkage long parisc_truncate64(const char __user * path,
	287	unsigned int high, unsigned int low)
	288	{
	289	return sys_truncate(path, (long)high << 32 \| low);
	290	}
	291
	292	asmlinkage long parisc_ftruncate64(unsigned int fd,
	293	unsigned int high, unsigned int low)
	294	{
	295	return sys_ftruncate(fd, (long)high << 32 \| low);
	296	}
	297
	298	/* stubs for the benefit of the syscall_table since truncate64 and truncate
	299	* are identical on LP64 */
	300	asmlinkage long sys_truncate64(const char __user * path, unsigned long length)
	301	{
	302	return sys_truncate(path, length);
	303	}
	304	asmlinkage long sys_ftruncate64(unsigned int fd, unsigned long length)
	305	{
	306	return sys_ftruncate(fd, length);
	307	}
	308	asmlinkage long sys_fcntl64(unsigned int fd, unsigned int cmd, unsigned long arg)
	309	{
	310	return sys_fcntl(fd, cmd, arg);
	311	}
	312	#else
	313
	314	asmlinkage long parisc_truncate64(const char __user * path,
	315	unsigned int high, unsigned int low)
	316	{
	317	return sys_truncate64(path, (loff_t)high << 32 \| low);
	318	}
	319
	320	asmlinkage long parisc_ftruncate64(unsigned int fd,
	321	unsigned int high, unsigned int low)
	322	{
	323	return sys_ftruncate64(fd, (loff_t)high << 32 \| low);
	324	}
	325	#endif
	326
	327	asmlinkage ssize_t parisc_pread64(unsigned int fd, char __user *buf, size_t count,
	328	unsigned int high, unsigned int low)
	329	{
	330	return sys_pread64(fd, buf, count, (loff_t)high << 32 \| low);
	331	}
	332
	333	asmlinkage ssize_t parisc_pwrite64(unsigned int fd, const char __user *buf,
	334	size_t count, unsigned int high, unsigned int low)
	335	{
	336	return sys_pwrite64(fd, buf, count, (loff_t)high << 32 \| low);
	337	}
	338
	339	asmlinkage ssize_t parisc_readahead(int fd, unsigned int high, unsigned int low,
	340	size_t count)
	341	{
	342	return sys_readahead(fd, (loff_t)high << 32 \| low, count);
	343	}
	344
	345	asmlinkage long parisc_fadvise64_64(int fd,
	346	unsigned int high_off, unsigned int low_off,
347	unsigned int high_len, unsigned int low_len, int advice)
348	{
349	return sys_fadvise64_64(fd, (loff_t)high_off << 32 \| low_off,
350	(loff_t)high_len << 32 \| low_len, advice);
351	}
352
6ca773cf KM	353	asmlinkage long parisc_sync_file_range(int fd,
	354	u32 hi_off, u32 lo_off, u32 hi_nbytes, u32 lo_nbytes,
	355	unsigned int flags)
	356	{
	357	return sys_sync_file_range(fd, (loff_t)hi_off << 32 \| lo_off,
	358	(loff_t)hi_nbytes << 32 \| lo_nbytes, flags);
	359	}
	360
4474a331 HD	361	asmlinkage long parisc_fallocate(int fd, int mode, u32 offhi, u32 offlo,
	362	u32 lenhi, u32 lenlo)
	363	{
	364	return sys_fallocate(fd, mode, ((u64)offhi << 32) \| offlo,
	365	((u64)lenhi << 32) \| lenlo);
	366	}
	367
1da177e4 LT	368	asmlinkage unsigned long sys_alloc_hugepages(int key, unsigned long addr, unsigned long len, int prot, int flag)
	369	{
	370	return -ENOMEM;
	371	}
	372
	373	asmlinkage int sys_free_hugepages(unsigned long addr)
	374	{
	375	return -EINVAL;
	376	}
75a49581 KM	377
	378	long parisc_personality(unsigned long personality)
	379	{
	380	long err;
	381
	382	if (personality(current->personality) == PER_LINUX32
5b24c421 JK	383	&& personality(personality) == PER_LINUX)
5b24c421 JK	384	personality = (personality & ~PER_MASK) \| PER_LINUX32;
75a49581 KM	385
75a49581 KM	386	err = sys_personality(personality);
5b24c421 JK	387	if (personality(err) == PER_LINUX32)
5b24c421 JK	388	err = (err & ~PER_MASK) \| PER_LINUX;
75a49581 KM	389
	390	return err;
	391	}