diff options
Diffstat (limited to 'arch/ia64/kernel/sys_ia64.c')
| -rw-r--r-- | arch/ia64/kernel/sys_ia64.c | 168 |
1 files changed, 0 insertions, 168 deletions
diff --git a/arch/ia64/kernel/sys_ia64.c b/arch/ia64/kernel/sys_ia64.c deleted file mode 100644 index e14db25146c2..000000000000 --- a/arch/ia64/kernel/sys_ia64.c +++ /dev/null @@ -1,168 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* - * This file contains various system calls that have different calling - * conventions on different platforms. - * - * Copyright (C) 1999-2000, 2002-2003, 2005 Hewlett-Packard Co - * David Mosberger-Tang <davidm@hpl.hp.com> - */ -#include <linux/errno.h> -#include <linux/fs.h> -#include <linux/mm.h> -#include <linux/mman.h> -#include <linux/sched.h> -#include <linux/sched/mm.h> -#include <linux/sched/task_stack.h> -#include <linux/shm.h> -#include <linux/file.h> /* doh, must come after sched.h... */ -#include <linux/smp.h> -#include <linux/syscalls.h> -#include <linux/highuid.h> -#include <linux/hugetlb.h> - -#include <asm/shmparam.h> -#include <linux/uaccess.h> - -unsigned long -arch_get_unmapped_area (struct file *filp, unsigned long addr, unsigned long len, - unsigned long pgoff, unsigned long flags) -{ - long map_shared = (flags & MAP_SHARED); - unsigned long align_mask = 0; - struct mm_struct *mm = current->mm; - struct vm_unmapped_area_info info; - - if (len > RGN_MAP_LIMIT) - return -ENOMEM; - - /* handle fixed mapping: prevent overlap with huge pages */ - if (flags & MAP_FIXED) { - if (is_hugepage_only_range(mm, addr, len)) - return -EINVAL; - return addr; - } - -#ifdef CONFIG_HUGETLB_PAGE - if (REGION_NUMBER(addr) == RGN_HPAGE) - addr = 0; -#endif - if (!addr) - addr = TASK_UNMAPPED_BASE; - - if (map_shared && (TASK_SIZE > 0xfffffffful)) - /* - * For 64-bit tasks, align shared segments to 1MB to avoid potential - * performance penalty due to virtual aliasing (see ASDM). For 32-bit - * tasks, we prefer to avoid exhausting the address space too quickly by - * limiting alignment to a single page. - */ - align_mask = PAGE_MASK & (SHMLBA - 1); - - info.flags = 0; - info.length = len; - info.low_limit = addr; - info.high_limit = TASK_SIZE; - info.align_mask = align_mask; - info.align_offset = 0; - return vm_unmapped_area(&info); -} - -asmlinkage long -ia64_getpriority (int which, int who) -{ - long prio; - - prio = sys_getpriority(which, who); - if (prio >= 0) { - force_successful_syscall_return(); - prio = 20 - prio; - } - return prio; -} - -/* XXX obsolete, but leave it here until the old libc is gone... */ -asmlinkage unsigned long -sys_getpagesize (void) -{ - return PAGE_SIZE; -} - -asmlinkage unsigned long -ia64_brk (unsigned long brk) -{ - unsigned long retval = sys_brk(brk); - force_successful_syscall_return(); - return retval; -} - -/* - * On IA-64, we return the two file descriptors in ret0 and ret1 (r8 - * and r9) as this is faster than doing a copy_to_user(). - */ -asmlinkage long -sys_ia64_pipe (void) -{ - struct pt_regs *regs = task_pt_regs(current); - int fd[2]; - int retval; - - retval = do_pipe_flags(fd, 0); - if (retval) - goto out; - retval = fd[0]; - regs->r9 = fd[1]; - out: - return retval; -} - -int ia64_mmap_check(unsigned long addr, unsigned long len, - unsigned long flags) -{ - unsigned long roff; - - /* - * Don't permit mappings into unmapped space, the virtual page table - * of a region, or across a region boundary. Note: RGN_MAP_LIMIT is - * equal to 2^n-PAGE_SIZE (for some integer n <= 61) and len > 0. - */ - roff = REGION_OFFSET(addr); - if ((len > RGN_MAP_LIMIT) || (roff > (RGN_MAP_LIMIT - len))) - return -EINVAL; - return 0; -} - -/* - * mmap2() is like mmap() except that the offset is expressed in units - * of PAGE_SIZE (instead of bytes). This allows to mmap2() (pieces - * of) files that are larger than the address space of the CPU. - */ -asmlinkage unsigned long -sys_mmap2 (unsigned long addr, unsigned long len, int prot, int flags, int fd, long pgoff) -{ - addr = ksys_mmap_pgoff(addr, len, prot, flags, fd, pgoff); - if (!IS_ERR((void *) addr)) - force_successful_syscall_return(); - return addr; -} - -asmlinkage unsigned long -sys_mmap (unsigned long addr, unsigned long len, int prot, int flags, int fd, long off) -{ - if (offset_in_page(off) != 0) - return -EINVAL; - - addr = ksys_mmap_pgoff(addr, len, prot, flags, fd, off >> PAGE_SHIFT); - if (!IS_ERR((void *) addr)) - force_successful_syscall_return(); - return addr; -} - -asmlinkage unsigned long -ia64_mremap (unsigned long addr, unsigned long old_len, unsigned long new_len, unsigned long flags, - unsigned long new_addr) -{ - addr = sys_mremap(addr, old_len, new_len, flags, new_addr); - if (!IS_ERR((void *) addr)) - force_successful_syscall_return(); - return addr; -} |