1462 lines
35 KiB
C
1462 lines
35 KiB
C
/*
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* linux/arch/alpha/kernel/osf_sys.c
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*
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* Copyright (C) 1995 Linus Torvalds
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*/
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/*
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* This file handles some of the stranger OSF/1 system call interfaces.
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* Some of the system calls expect a non-C calling standard, others have
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* special parameter blocks..
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*/
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#include <linux/errno.h>
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#include <linux/sched/signal.h>
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#include <linux/sched/mm.h>
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#include <linux/sched/task_stack.h>
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#include <linux/sched/cputime.h>
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#include <linux/kernel.h>
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#include <linux/mm.h>
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#include <linux/smp.h>
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#include <linux/stddef.h>
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#include <linux/syscalls.h>
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#include <linux/unistd.h>
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#include <linux/ptrace.h>
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#include <linux/user.h>
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#include <linux/utsname.h>
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#include <linux/time.h>
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#include <linux/timex.h>
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#include <linux/major.h>
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#include <linux/stat.h>
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#include <linux/mman.h>
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#include <linux/shm.h>
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#include <linux/poll.h>
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#include <linux/file.h>
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#include <linux/types.h>
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#include <linux/ipc.h>
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#include <linux/namei.h>
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#include <linux/uio.h>
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#include <linux/vfs.h>
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#include <linux/rcupdate.h>
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#include <linux/slab.h>
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#include <asm/fpu.h>
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#include <asm/io.h>
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#include <linux/uaccess.h>
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#include <asm/sysinfo.h>
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#include <asm/thread_info.h>
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#include <asm/hwrpb.h>
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#include <asm/processor.h>
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/*
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* Brk needs to return an error. Still support Linux's brk(0) query idiom,
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* which OSF programs just shouldn't be doing. We're still not quite
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* identical to OSF as we don't return 0 on success, but doing otherwise
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* would require changes to libc. Hopefully this is good enough.
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*/
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SYSCALL_DEFINE1(osf_brk, unsigned long, brk)
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{
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unsigned long retval = sys_brk(brk);
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if (brk && brk != retval)
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retval = -ENOMEM;
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return retval;
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}
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/*
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* This is pure guess-work..
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*/
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SYSCALL_DEFINE4(osf_set_program_attributes, unsigned long, text_start,
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unsigned long, text_len, unsigned long, bss_start,
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unsigned long, bss_len)
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{
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struct mm_struct *mm;
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mm = current->mm;
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mm->end_code = bss_start + bss_len;
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mm->start_brk = bss_start + bss_len;
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mm->brk = bss_start + bss_len;
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#if 0
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printk("set_program_attributes(%lx %lx %lx %lx)\n",
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text_start, text_len, bss_start, bss_len);
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#endif
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return 0;
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}
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/*
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* OSF/1 directory handling functions...
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*
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* The "getdents()" interface is much more sane: the "basep" stuff is
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* braindamage (it can't really handle filesystems where the directory
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* offset differences aren't the same as "d_reclen").
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*/
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#define NAME_OFFSET offsetof (struct osf_dirent, d_name)
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struct osf_dirent {
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unsigned int d_ino;
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unsigned short d_reclen;
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unsigned short d_namlen;
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char d_name[1];
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};
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struct osf_dirent_callback {
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struct dir_context ctx;
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struct osf_dirent __user *dirent;
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long __user *basep;
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unsigned int count;
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int error;
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};
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static int
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osf_filldir(struct dir_context *ctx, const char *name, int namlen,
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loff_t offset, u64 ino, unsigned int d_type)
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{
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struct osf_dirent __user *dirent;
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struct osf_dirent_callback *buf =
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container_of(ctx, struct osf_dirent_callback, ctx);
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unsigned int reclen = ALIGN(NAME_OFFSET + namlen + 1, sizeof(u32));
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unsigned int d_ino;
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buf->error = -EINVAL; /* only used if we fail */
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if (reclen > buf->count)
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return -EINVAL;
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d_ino = ino;
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if (sizeof(d_ino) < sizeof(ino) && d_ino != ino) {
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buf->error = -EOVERFLOW;
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return -EOVERFLOW;
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}
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if (buf->basep) {
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if (put_user(offset, buf->basep))
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goto Efault;
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buf->basep = NULL;
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}
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dirent = buf->dirent;
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if (put_user(d_ino, &dirent->d_ino) ||
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put_user(namlen, &dirent->d_namlen) ||
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put_user(reclen, &dirent->d_reclen) ||
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copy_to_user(dirent->d_name, name, namlen) ||
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put_user(0, dirent->d_name + namlen))
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goto Efault;
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dirent = (void __user *)dirent + reclen;
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buf->dirent = dirent;
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buf->count -= reclen;
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return 0;
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Efault:
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buf->error = -EFAULT;
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return -EFAULT;
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}
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SYSCALL_DEFINE4(osf_getdirentries, unsigned int, fd,
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struct osf_dirent __user *, dirent, unsigned int, count,
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long __user *, basep)
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{
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int error;
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struct fd arg = fdget_pos(fd);
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struct osf_dirent_callback buf = {
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.ctx.actor = osf_filldir,
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.dirent = dirent,
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.basep = basep,
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.count = count
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};
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if (!arg.file)
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return -EBADF;
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error = iterate_dir(arg.file, &buf.ctx);
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if (error >= 0)
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error = buf.error;
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if (count != buf.count)
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error = count - buf.count;
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fdput_pos(arg);
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return error;
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}
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#undef NAME_OFFSET
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SYSCALL_DEFINE6(osf_mmap, unsigned long, addr, unsigned long, len,
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unsigned long, prot, unsigned long, flags, unsigned long, fd,
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unsigned long, off)
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{
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unsigned long ret = -EINVAL;
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#if 0
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if (flags & (_MAP_HASSEMAPHORE | _MAP_INHERIT | _MAP_UNALIGNED))
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printk("%s: unimplemented OSF mmap flags %04lx\n",
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current->comm, flags);
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#endif
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if ((off + PAGE_ALIGN(len)) < off)
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goto out;
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if (off & ~PAGE_MASK)
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goto out;
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ret = sys_mmap_pgoff(addr, len, prot, flags, fd, off >> PAGE_SHIFT);
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out:
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return ret;
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}
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struct osf_stat {
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int st_dev;
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int st_pad1;
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unsigned st_mode;
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unsigned short st_nlink;
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short st_nlink_reserved;
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unsigned st_uid;
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unsigned st_gid;
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int st_rdev;
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int st_ldev;
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long st_size;
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int st_pad2;
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int st_uatime;
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int st_pad3;
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int st_umtime;
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int st_pad4;
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int st_uctime;
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int st_pad5;
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int st_pad6;
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unsigned st_flags;
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unsigned st_gen;
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long st_spare[4];
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unsigned st_ino;
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int st_ino_reserved;
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int st_atime;
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int st_atime_reserved;
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int st_mtime;
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int st_mtime_reserved;
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int st_ctime;
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int st_ctime_reserved;
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long st_blksize;
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long st_blocks;
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};
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/*
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* The OSF/1 statfs structure is much larger, but this should
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* match the beginning, at least.
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*/
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struct osf_statfs {
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short f_type;
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short f_flags;
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int f_fsize;
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int f_bsize;
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int f_blocks;
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int f_bfree;
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int f_bavail;
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int f_files;
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int f_ffree;
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__kernel_fsid_t f_fsid;
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};
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struct osf_statfs64 {
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short f_type;
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short f_flags;
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int f_pad1;
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int f_pad2;
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int f_pad3;
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int f_pad4;
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int f_pad5;
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int f_pad6;
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int f_pad7;
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__kernel_fsid_t f_fsid;
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u_short f_namemax;
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short f_reserved1;
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int f_spare[8];
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char f_pad8[90];
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char f_pad9[90];
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long mount_info[10];
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u_long f_flags2;
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long f_spare2[14];
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long f_fsize;
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long f_bsize;
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long f_blocks;
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long f_bfree;
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long f_bavail;
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long f_files;
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long f_ffree;
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};
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static int
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linux_to_osf_stat(struct kstat *lstat, struct osf_stat __user *osf_stat)
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{
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struct osf_stat tmp = { 0 };
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tmp.st_dev = lstat->dev;
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tmp.st_mode = lstat->mode;
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tmp.st_nlink = lstat->nlink;
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tmp.st_uid = from_kuid_munged(current_user_ns(), lstat->uid);
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tmp.st_gid = from_kgid_munged(current_user_ns(), lstat->gid);
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tmp.st_rdev = lstat->rdev;
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tmp.st_ldev = lstat->rdev;
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tmp.st_size = lstat->size;
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tmp.st_uatime = lstat->atime.tv_nsec / 1000;
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tmp.st_umtime = lstat->mtime.tv_nsec / 1000;
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tmp.st_uctime = lstat->ctime.tv_nsec / 1000;
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tmp.st_ino = lstat->ino;
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tmp.st_atime = lstat->atime.tv_sec;
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tmp.st_mtime = lstat->mtime.tv_sec;
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tmp.st_ctime = lstat->ctime.tv_sec;
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tmp.st_blksize = lstat->blksize;
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tmp.st_blocks = lstat->blocks;
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return copy_to_user(osf_stat, &tmp, sizeof(tmp)) ? -EFAULT : 0;
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}
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static int
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linux_to_osf_statfs(struct kstatfs *linux_stat, struct osf_statfs __user *osf_stat,
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unsigned long bufsiz)
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{
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struct osf_statfs tmp_stat;
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tmp_stat.f_type = linux_stat->f_type;
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tmp_stat.f_flags = 0; /* mount flags */
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tmp_stat.f_fsize = linux_stat->f_frsize;
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tmp_stat.f_bsize = linux_stat->f_bsize;
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tmp_stat.f_blocks = linux_stat->f_blocks;
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tmp_stat.f_bfree = linux_stat->f_bfree;
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tmp_stat.f_bavail = linux_stat->f_bavail;
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tmp_stat.f_files = linux_stat->f_files;
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tmp_stat.f_ffree = linux_stat->f_ffree;
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tmp_stat.f_fsid = linux_stat->f_fsid;
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if (bufsiz > sizeof(tmp_stat))
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bufsiz = sizeof(tmp_stat);
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return copy_to_user(osf_stat, &tmp_stat, bufsiz) ? -EFAULT : 0;
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}
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|
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static int
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linux_to_osf_statfs64(struct kstatfs *linux_stat, struct osf_statfs64 __user *osf_stat,
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unsigned long bufsiz)
|
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{
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struct osf_statfs64 tmp_stat = { 0 };
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tmp_stat.f_type = linux_stat->f_type;
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tmp_stat.f_fsize = linux_stat->f_frsize;
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tmp_stat.f_bsize = linux_stat->f_bsize;
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tmp_stat.f_blocks = linux_stat->f_blocks;
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tmp_stat.f_bfree = linux_stat->f_bfree;
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tmp_stat.f_bavail = linux_stat->f_bavail;
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tmp_stat.f_files = linux_stat->f_files;
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tmp_stat.f_ffree = linux_stat->f_ffree;
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tmp_stat.f_fsid = linux_stat->f_fsid;
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if (bufsiz > sizeof(tmp_stat))
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bufsiz = sizeof(tmp_stat);
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return copy_to_user(osf_stat, &tmp_stat, bufsiz) ? -EFAULT : 0;
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}
|
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|
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SYSCALL_DEFINE3(osf_statfs, const char __user *, pathname,
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struct osf_statfs __user *, buffer, unsigned long, bufsiz)
|
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{
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struct kstatfs linux_stat;
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int error = user_statfs(pathname, &linux_stat);
|
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if (!error)
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error = linux_to_osf_statfs(&linux_stat, buffer, bufsiz);
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return error;
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}
|
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|
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SYSCALL_DEFINE2(osf_stat, char __user *, name, struct osf_stat __user *, buf)
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{
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struct kstat stat;
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int error;
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error = vfs_stat(name, &stat);
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if (error)
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return error;
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return linux_to_osf_stat(&stat, buf);
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}
|
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|
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SYSCALL_DEFINE2(osf_lstat, char __user *, name, struct osf_stat __user *, buf)
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{
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struct kstat stat;
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int error;
|
|
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error = vfs_lstat(name, &stat);
|
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if (error)
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return error;
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|
|
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return linux_to_osf_stat(&stat, buf);
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}
|
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|
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SYSCALL_DEFINE2(osf_fstat, int, fd, struct osf_stat __user *, buf)
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{
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struct kstat stat;
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int error;
|
|
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error = vfs_fstat(fd, &stat);
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if (error)
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return error;
|
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|
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return linux_to_osf_stat(&stat, buf);
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}
|
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|
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SYSCALL_DEFINE3(osf_fstatfs, unsigned long, fd,
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struct osf_statfs __user *, buffer, unsigned long, bufsiz)
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{
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struct kstatfs linux_stat;
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int error = fd_statfs(fd, &linux_stat);
|
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if (!error)
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error = linux_to_osf_statfs(&linux_stat, buffer, bufsiz);
|
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return error;
|
|
}
|
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|
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SYSCALL_DEFINE3(osf_statfs64, char __user *, pathname,
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struct osf_statfs64 __user *, buffer, unsigned long, bufsiz)
|
|
{
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struct kstatfs linux_stat;
|
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int error = user_statfs(pathname, &linux_stat);
|
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if (!error)
|
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error = linux_to_osf_statfs64(&linux_stat, buffer, bufsiz);
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return error;
|
|
}
|
|
|
|
SYSCALL_DEFINE3(osf_fstatfs64, unsigned long, fd,
|
|
struct osf_statfs64 __user *, buffer, unsigned long, bufsiz)
|
|
{
|
|
struct kstatfs linux_stat;
|
|
int error = fd_statfs(fd, &linux_stat);
|
|
if (!error)
|
|
error = linux_to_osf_statfs64(&linux_stat, buffer, bufsiz);
|
|
return error;
|
|
}
|
|
|
|
/*
|
|
* Uhh.. OSF/1 mount parameters aren't exactly obvious..
|
|
*
|
|
* Although to be frank, neither are the native Linux/i386 ones..
|
|
*/
|
|
struct ufs_args {
|
|
char __user *devname;
|
|
int flags;
|
|
uid_t exroot;
|
|
};
|
|
|
|
struct cdfs_args {
|
|
char __user *devname;
|
|
int flags;
|
|
uid_t exroot;
|
|
|
|
/* This has lots more here, which Linux handles with the option block
|
|
but I'm too lazy to do the translation into ASCII. */
|
|
};
|
|
|
|
struct procfs_args {
|
|
char __user *devname;
|
|
int flags;
|
|
uid_t exroot;
|
|
};
|
|
|
|
/*
|
|
* We can't actually handle ufs yet, so we translate UFS mounts to
|
|
* ext2fs mounts. I wouldn't mind a UFS filesystem, but the UFS
|
|
* layout is so braindead it's a major headache doing it.
|
|
*
|
|
* Just how long ago was it written? OTOH our UFS driver may be still
|
|
* unhappy with OSF UFS. [CHECKME]
|
|
*/
|
|
static int
|
|
osf_ufs_mount(const char __user *dirname,
|
|
struct ufs_args __user *args, int flags)
|
|
{
|
|
int retval;
|
|
struct cdfs_args tmp;
|
|
struct filename *devname;
|
|
|
|
retval = -EFAULT;
|
|
if (copy_from_user(&tmp, args, sizeof(tmp)))
|
|
goto out;
|
|
devname = getname(tmp.devname);
|
|
retval = PTR_ERR(devname);
|
|
if (IS_ERR(devname))
|
|
goto out;
|
|
retval = do_mount(devname->name, dirname, "ext2", flags, NULL);
|
|
putname(devname);
|
|
out:
|
|
return retval;
|
|
}
|
|
|
|
static int
|
|
osf_cdfs_mount(const char __user *dirname,
|
|
struct cdfs_args __user *args, int flags)
|
|
{
|
|
int retval;
|
|
struct cdfs_args tmp;
|
|
struct filename *devname;
|
|
|
|
retval = -EFAULT;
|
|
if (copy_from_user(&tmp, args, sizeof(tmp)))
|
|
goto out;
|
|
devname = getname(tmp.devname);
|
|
retval = PTR_ERR(devname);
|
|
if (IS_ERR(devname))
|
|
goto out;
|
|
retval = do_mount(devname->name, dirname, "iso9660", flags, NULL);
|
|
putname(devname);
|
|
out:
|
|
return retval;
|
|
}
|
|
|
|
static int
|
|
osf_procfs_mount(const char __user *dirname,
|
|
struct procfs_args __user *args, int flags)
|
|
{
|
|
struct procfs_args tmp;
|
|
|
|
if (copy_from_user(&tmp, args, sizeof(tmp)))
|
|
return -EFAULT;
|
|
|
|
return do_mount("", dirname, "proc", flags, NULL);
|
|
}
|
|
|
|
SYSCALL_DEFINE4(osf_mount, unsigned long, typenr, const char __user *, path,
|
|
int, flag, void __user *, data)
|
|
{
|
|
int retval;
|
|
|
|
switch (typenr) {
|
|
case 1:
|
|
retval = osf_ufs_mount(path, data, flag);
|
|
break;
|
|
case 6:
|
|
retval = osf_cdfs_mount(path, data, flag);
|
|
break;
|
|
case 9:
|
|
retval = osf_procfs_mount(path, data, flag);
|
|
break;
|
|
default:
|
|
retval = -EINVAL;
|
|
printk("osf_mount(%ld, %x)\n", typenr, flag);
|
|
}
|
|
|
|
return retval;
|
|
}
|
|
|
|
SYSCALL_DEFINE1(osf_utsname, char __user *, name)
|
|
{
|
|
int error;
|
|
|
|
down_read(&uts_sem);
|
|
error = -EFAULT;
|
|
if (copy_to_user(name + 0, utsname()->sysname, 32))
|
|
goto out;
|
|
if (copy_to_user(name + 32, utsname()->nodename, 32))
|
|
goto out;
|
|
if (copy_to_user(name + 64, utsname()->release, 32))
|
|
goto out;
|
|
if (copy_to_user(name + 96, utsname()->version, 32))
|
|
goto out;
|
|
if (copy_to_user(name + 128, utsname()->machine, 32))
|
|
goto out;
|
|
|
|
error = 0;
|
|
out:
|
|
up_read(&uts_sem);
|
|
return error;
|
|
}
|
|
|
|
SYSCALL_DEFINE0(getpagesize)
|
|
{
|
|
return PAGE_SIZE;
|
|
}
|
|
|
|
SYSCALL_DEFINE0(getdtablesize)
|
|
{
|
|
return sysctl_nr_open;
|
|
}
|
|
|
|
/*
|
|
* For compatibility with OSF/1 only. Use utsname(2) instead.
|
|
*/
|
|
SYSCALL_DEFINE2(osf_getdomainname, char __user *, name, int, namelen)
|
|
{
|
|
unsigned len;
|
|
int i;
|
|
|
|
if (!access_ok(VERIFY_WRITE, name, namelen))
|
|
return -EFAULT;
|
|
|
|
len = namelen;
|
|
if (len > 32)
|
|
len = 32;
|
|
|
|
down_read(&uts_sem);
|
|
for (i = 0; i < len; ++i) {
|
|
__put_user(utsname()->domainname[i], name + i);
|
|
if (utsname()->domainname[i] == '\0')
|
|
break;
|
|
}
|
|
up_read(&uts_sem);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* The following stuff should move into a header file should it ever
|
|
* be labeled "officially supported." Right now, there is just enough
|
|
* support to avoid applications (such as tar) printing error
|
|
* messages. The attributes are not really implemented.
|
|
*/
|
|
|
|
/*
|
|
* Values for Property list entry flag
|
|
*/
|
|
#define PLE_PROPAGATE_ON_COPY 0x1 /* cp(1) will copy entry
|
|
by default */
|
|
#define PLE_FLAG_MASK 0x1 /* Valid flag values */
|
|
#define PLE_FLAG_ALL -1 /* All flag value */
|
|
|
|
struct proplistname_args {
|
|
unsigned int pl_mask;
|
|
unsigned int pl_numnames;
|
|
char **pl_names;
|
|
};
|
|
|
|
union pl_args {
|
|
struct setargs {
|
|
char __user *path;
|
|
long follow;
|
|
long nbytes;
|
|
char __user *buf;
|
|
} set;
|
|
struct fsetargs {
|
|
long fd;
|
|
long nbytes;
|
|
char __user *buf;
|
|
} fset;
|
|
struct getargs {
|
|
char __user *path;
|
|
long follow;
|
|
struct proplistname_args __user *name_args;
|
|
long nbytes;
|
|
char __user *buf;
|
|
int __user *min_buf_size;
|
|
} get;
|
|
struct fgetargs {
|
|
long fd;
|
|
struct proplistname_args __user *name_args;
|
|
long nbytes;
|
|
char __user *buf;
|
|
int __user *min_buf_size;
|
|
} fget;
|
|
struct delargs {
|
|
char __user *path;
|
|
long follow;
|
|
struct proplistname_args __user *name_args;
|
|
} del;
|
|
struct fdelargs {
|
|
long fd;
|
|
struct proplistname_args __user *name_args;
|
|
} fdel;
|
|
};
|
|
|
|
enum pl_code {
|
|
PL_SET = 1, PL_FSET = 2,
|
|
PL_GET = 3, PL_FGET = 4,
|
|
PL_DEL = 5, PL_FDEL = 6
|
|
};
|
|
|
|
SYSCALL_DEFINE2(osf_proplist_syscall, enum pl_code, code,
|
|
union pl_args __user *, args)
|
|
{
|
|
long error;
|
|
int __user *min_buf_size_ptr;
|
|
|
|
switch (code) {
|
|
case PL_SET:
|
|
if (get_user(error, &args->set.nbytes))
|
|
error = -EFAULT;
|
|
break;
|
|
case PL_FSET:
|
|
if (get_user(error, &args->fset.nbytes))
|
|
error = -EFAULT;
|
|
break;
|
|
case PL_GET:
|
|
error = get_user(min_buf_size_ptr, &args->get.min_buf_size);
|
|
if (error)
|
|
break;
|
|
error = put_user(0, min_buf_size_ptr);
|
|
break;
|
|
case PL_FGET:
|
|
error = get_user(min_buf_size_ptr, &args->fget.min_buf_size);
|
|
if (error)
|
|
break;
|
|
error = put_user(0, min_buf_size_ptr);
|
|
break;
|
|
case PL_DEL:
|
|
case PL_FDEL:
|
|
error = 0;
|
|
break;
|
|
default:
|
|
error = -EOPNOTSUPP;
|
|
break;
|
|
};
|
|
return error;
|
|
}
|
|
|
|
SYSCALL_DEFINE2(osf_sigstack, struct sigstack __user *, uss,
|
|
struct sigstack __user *, uoss)
|
|
{
|
|
unsigned long usp = rdusp();
|
|
unsigned long oss_sp = current->sas_ss_sp + current->sas_ss_size;
|
|
unsigned long oss_os = on_sig_stack(usp);
|
|
int error;
|
|
|
|
if (uss) {
|
|
void __user *ss_sp;
|
|
|
|
error = -EFAULT;
|
|
if (get_user(ss_sp, &uss->ss_sp))
|
|
goto out;
|
|
|
|
/* If the current stack was set with sigaltstack, don't
|
|
swap stacks while we are on it. */
|
|
error = -EPERM;
|
|
if (current->sas_ss_sp && on_sig_stack(usp))
|
|
goto out;
|
|
|
|
/* Since we don't know the extent of the stack, and we don't
|
|
track onstack-ness, but rather calculate it, we must
|
|
presume a size. Ho hum this interface is lossy. */
|
|
current->sas_ss_sp = (unsigned long)ss_sp - SIGSTKSZ;
|
|
current->sas_ss_size = SIGSTKSZ;
|
|
}
|
|
|
|
if (uoss) {
|
|
error = -EFAULT;
|
|
if (! access_ok(VERIFY_WRITE, uoss, sizeof(*uoss))
|
|
|| __put_user(oss_sp, &uoss->ss_sp)
|
|
|| __put_user(oss_os, &uoss->ss_onstack))
|
|
goto out;
|
|
}
|
|
|
|
error = 0;
|
|
out:
|
|
return error;
|
|
}
|
|
|
|
SYSCALL_DEFINE3(osf_sysinfo, int, command, char __user *, buf, long, count)
|
|
{
|
|
const char *sysinfo_table[] = {
|
|
utsname()->sysname,
|
|
utsname()->nodename,
|
|
utsname()->release,
|
|
utsname()->version,
|
|
utsname()->machine,
|
|
"alpha", /* instruction set architecture */
|
|
"dummy", /* hardware serial number */
|
|
"dummy", /* hardware manufacturer */
|
|
"dummy", /* secure RPC domain */
|
|
};
|
|
unsigned long offset;
|
|
const char *res;
|
|
long len, err = -EINVAL;
|
|
|
|
offset = command-1;
|
|
if (offset >= ARRAY_SIZE(sysinfo_table)) {
|
|
/* Digital UNIX has a few unpublished interfaces here */
|
|
printk("sysinfo(%d)", command);
|
|
goto out;
|
|
}
|
|
|
|
down_read(&uts_sem);
|
|
res = sysinfo_table[offset];
|
|
len = strlen(res)+1;
|
|
if ((unsigned long)len > (unsigned long)count)
|
|
len = count;
|
|
if (copy_to_user(buf, res, len))
|
|
err = -EFAULT;
|
|
else
|
|
err = 0;
|
|
up_read(&uts_sem);
|
|
out:
|
|
return err;
|
|
}
|
|
|
|
SYSCALL_DEFINE5(osf_getsysinfo, unsigned long, op, void __user *, buffer,
|
|
unsigned long, nbytes, int __user *, start, void __user *, arg)
|
|
{
|
|
unsigned long w;
|
|
struct percpu_struct *cpu;
|
|
|
|
switch (op) {
|
|
case GSI_IEEE_FP_CONTROL:
|
|
/* Return current software fp control & status bits. */
|
|
/* Note that DU doesn't verify available space here. */
|
|
|
|
w = current_thread_info()->ieee_state & IEEE_SW_MASK;
|
|
w = swcr_update_status(w, rdfpcr());
|
|
if (put_user(w, (unsigned long __user *) buffer))
|
|
return -EFAULT;
|
|
return 0;
|
|
|
|
case GSI_IEEE_STATE_AT_SIGNAL:
|
|
/*
|
|
* Not sure anybody will ever use this weird stuff. These
|
|
* ops can be used (under OSF/1) to set the fpcr that should
|
|
* be used when a signal handler starts executing.
|
|
*/
|
|
break;
|
|
|
|
case GSI_UACPROC:
|
|
if (nbytes < sizeof(unsigned int))
|
|
return -EINVAL;
|
|
w = current_thread_info()->status & UAC_BITMASK;
|
|
if (put_user(w, (unsigned int __user *)buffer))
|
|
return -EFAULT;
|
|
return 1;
|
|
|
|
case GSI_PROC_TYPE:
|
|
if (nbytes < sizeof(unsigned long))
|
|
return -EINVAL;
|
|
cpu = (struct percpu_struct*)
|
|
((char*)hwrpb + hwrpb->processor_offset);
|
|
w = cpu->type;
|
|
if (put_user(w, (unsigned long __user*)buffer))
|
|
return -EFAULT;
|
|
return 1;
|
|
|
|
case GSI_GET_HWRPB:
|
|
if (nbytes > sizeof(*hwrpb))
|
|
return -EINVAL;
|
|
if (copy_to_user(buffer, hwrpb, nbytes) != 0)
|
|
return -EFAULT;
|
|
return 1;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
SYSCALL_DEFINE5(osf_setsysinfo, unsigned long, op, void __user *, buffer,
|
|
unsigned long, nbytes, int __user *, start, void __user *, arg)
|
|
{
|
|
switch (op) {
|
|
case SSI_IEEE_FP_CONTROL: {
|
|
unsigned long swcr, fpcr;
|
|
unsigned int *state;
|
|
|
|
/*
|
|
* Alpha Architecture Handbook 4.7.7.3:
|
|
* To be fully IEEE compiant, we must track the current IEEE
|
|
* exception state in software, because spurious bits can be
|
|
* set in the trap shadow of a software-complete insn.
|
|
*/
|
|
|
|
if (get_user(swcr, (unsigned long __user *)buffer))
|
|
return -EFAULT;
|
|
state = ¤t_thread_info()->ieee_state;
|
|
|
|
/* Update softare trap enable bits. */
|
|
*state = (*state & ~IEEE_SW_MASK) | (swcr & IEEE_SW_MASK);
|
|
|
|
/* Update the real fpcr. */
|
|
fpcr = rdfpcr() & FPCR_DYN_MASK;
|
|
fpcr |= ieee_swcr_to_fpcr(swcr);
|
|
wrfpcr(fpcr);
|
|
|
|
return 0;
|
|
}
|
|
|
|
case SSI_IEEE_RAISE_EXCEPTION: {
|
|
unsigned long exc, swcr, fpcr, fex;
|
|
unsigned int *state;
|
|
|
|
if (get_user(exc, (unsigned long __user *)buffer))
|
|
return -EFAULT;
|
|
state = ¤t_thread_info()->ieee_state;
|
|
exc &= IEEE_STATUS_MASK;
|
|
|
|
/* Update softare trap enable bits. */
|
|
swcr = (*state & IEEE_SW_MASK) | exc;
|
|
*state |= exc;
|
|
|
|
/* Update the real fpcr. */
|
|
fpcr = rdfpcr();
|
|
fpcr |= ieee_swcr_to_fpcr(swcr);
|
|
wrfpcr(fpcr);
|
|
|
|
/* If any exceptions set by this call, and are unmasked,
|
|
send a signal. Old exceptions are not signaled. */
|
|
fex = (exc >> IEEE_STATUS_TO_EXCSUM_SHIFT) & swcr;
|
|
if (fex) {
|
|
siginfo_t info;
|
|
int si_code = 0;
|
|
|
|
if (fex & IEEE_TRAP_ENABLE_DNO) si_code = FPE_FLTUND;
|
|
if (fex & IEEE_TRAP_ENABLE_INE) si_code = FPE_FLTRES;
|
|
if (fex & IEEE_TRAP_ENABLE_UNF) si_code = FPE_FLTUND;
|
|
if (fex & IEEE_TRAP_ENABLE_OVF) si_code = FPE_FLTOVF;
|
|
if (fex & IEEE_TRAP_ENABLE_DZE) si_code = FPE_FLTDIV;
|
|
if (fex & IEEE_TRAP_ENABLE_INV) si_code = FPE_FLTINV;
|
|
|
|
info.si_signo = SIGFPE;
|
|
info.si_errno = 0;
|
|
info.si_code = si_code;
|
|
info.si_addr = NULL; /* FIXME */
|
|
send_sig_info(SIGFPE, &info, current);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
case SSI_IEEE_STATE_AT_SIGNAL:
|
|
case SSI_IEEE_IGNORE_STATE_AT_SIGNAL:
|
|
/*
|
|
* Not sure anybody will ever use this weird stuff. These
|
|
* ops can be used (under OSF/1) to set the fpcr that should
|
|
* be used when a signal handler starts executing.
|
|
*/
|
|
break;
|
|
|
|
case SSI_NVPAIRS: {
|
|
unsigned __user *p = buffer;
|
|
unsigned i;
|
|
|
|
for (i = 0, p = buffer; i < nbytes; ++i, p += 2) {
|
|
unsigned v, w, status;
|
|
|
|
if (get_user(v, p) || get_user(w, p + 1))
|
|
return -EFAULT;
|
|
switch (v) {
|
|
case SSIN_UACPROC:
|
|
w &= UAC_BITMASK;
|
|
status = current_thread_info()->status;
|
|
status = (status & ~UAC_BITMASK) | w;
|
|
current_thread_info()->status = status;
|
|
break;
|
|
|
|
default:
|
|
return -EOPNOTSUPP;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
case SSI_LMF:
|
|
return 0;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
/* Translations due to the fact that OSF's time_t is an int. Which
|
|
affects all sorts of things, like timeval and itimerval. */
|
|
|
|
extern struct timezone sys_tz;
|
|
|
|
struct timeval32
|
|
{
|
|
int tv_sec, tv_usec;
|
|
};
|
|
|
|
struct itimerval32
|
|
{
|
|
struct timeval32 it_interval;
|
|
struct timeval32 it_value;
|
|
};
|
|
|
|
static inline long
|
|
get_tv32(struct timeval *o, struct timeval32 __user *i)
|
|
{
|
|
return (!access_ok(VERIFY_READ, i, sizeof(*i)) ||
|
|
(__get_user(o->tv_sec, &i->tv_sec) |
|
|
__get_user(o->tv_usec, &i->tv_usec)));
|
|
}
|
|
|
|
static inline long
|
|
put_tv32(struct timeval32 __user *o, struct timeval *i)
|
|
{
|
|
return (!access_ok(VERIFY_WRITE, o, sizeof(*o)) ||
|
|
(__put_user(i->tv_sec, &o->tv_sec) |
|
|
__put_user(i->tv_usec, &o->tv_usec)));
|
|
}
|
|
|
|
static inline long
|
|
get_it32(struct itimerval *o, struct itimerval32 __user *i)
|
|
{
|
|
return (!access_ok(VERIFY_READ, i, sizeof(*i)) ||
|
|
(__get_user(o->it_interval.tv_sec, &i->it_interval.tv_sec) |
|
|
__get_user(o->it_interval.tv_usec, &i->it_interval.tv_usec) |
|
|
__get_user(o->it_value.tv_sec, &i->it_value.tv_sec) |
|
|
__get_user(o->it_value.tv_usec, &i->it_value.tv_usec)));
|
|
}
|
|
|
|
static inline long
|
|
put_it32(struct itimerval32 __user *o, struct itimerval *i)
|
|
{
|
|
return (!access_ok(VERIFY_WRITE, o, sizeof(*o)) ||
|
|
(__put_user(i->it_interval.tv_sec, &o->it_interval.tv_sec) |
|
|
__put_user(i->it_interval.tv_usec, &o->it_interval.tv_usec) |
|
|
__put_user(i->it_value.tv_sec, &o->it_value.tv_sec) |
|
|
__put_user(i->it_value.tv_usec, &o->it_value.tv_usec)));
|
|
}
|
|
|
|
static inline void
|
|
jiffies_to_timeval32(unsigned long jiffies, struct timeval32 *value)
|
|
{
|
|
value->tv_usec = (jiffies % HZ) * (1000000L / HZ);
|
|
value->tv_sec = jiffies / HZ;
|
|
}
|
|
|
|
SYSCALL_DEFINE2(osf_gettimeofday, struct timeval32 __user *, tv,
|
|
struct timezone __user *, tz)
|
|
{
|
|
if (tv) {
|
|
struct timeval ktv;
|
|
do_gettimeofday(&ktv);
|
|
if (put_tv32(tv, &ktv))
|
|
return -EFAULT;
|
|
}
|
|
if (tz) {
|
|
if (copy_to_user(tz, &sys_tz, sizeof(sys_tz)))
|
|
return -EFAULT;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
SYSCALL_DEFINE2(osf_settimeofday, struct timeval32 __user *, tv,
|
|
struct timezone __user *, tz)
|
|
{
|
|
struct timespec kts;
|
|
struct timezone ktz;
|
|
|
|
if (tv) {
|
|
if (get_tv32((struct timeval *)&kts, tv))
|
|
return -EFAULT;
|
|
kts.tv_nsec *= 1000;
|
|
}
|
|
if (tz) {
|
|
if (copy_from_user(&ktz, tz, sizeof(*tz)))
|
|
return -EFAULT;
|
|
}
|
|
|
|
return do_sys_settimeofday(tv ? &kts : NULL, tz ? &ktz : NULL);
|
|
}
|
|
|
|
asmlinkage long sys_ni_posix_timers(void);
|
|
|
|
SYSCALL_DEFINE2(osf_getitimer, int, which, struct itimerval32 __user *, it)
|
|
{
|
|
struct itimerval kit;
|
|
int error;
|
|
|
|
if (!IS_ENABLED(CONFIG_POSIX_TIMERS))
|
|
return sys_ni_posix_timers();
|
|
|
|
error = do_getitimer(which, &kit);
|
|
if (!error && put_it32(it, &kit))
|
|
error = -EFAULT;
|
|
|
|
return error;
|
|
}
|
|
|
|
SYSCALL_DEFINE3(osf_setitimer, int, which, struct itimerval32 __user *, in,
|
|
struct itimerval32 __user *, out)
|
|
{
|
|
struct itimerval kin, kout;
|
|
int error;
|
|
|
|
if (!IS_ENABLED(CONFIG_POSIX_TIMERS))
|
|
return sys_ni_posix_timers();
|
|
|
|
if (in) {
|
|
if (get_it32(&kin, in))
|
|
return -EFAULT;
|
|
} else
|
|
memset(&kin, 0, sizeof(kin));
|
|
|
|
error = do_setitimer(which, &kin, out ? &kout : NULL);
|
|
if (error || !out)
|
|
return error;
|
|
|
|
if (put_it32(out, &kout))
|
|
return -EFAULT;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
SYSCALL_DEFINE2(osf_utimes, const char __user *, filename,
|
|
struct timeval32 __user *, tvs)
|
|
{
|
|
struct timespec tv[2];
|
|
|
|
if (tvs) {
|
|
struct timeval ktvs[2];
|
|
if (get_tv32(&ktvs[0], &tvs[0]) ||
|
|
get_tv32(&ktvs[1], &tvs[1]))
|
|
return -EFAULT;
|
|
|
|
if (ktvs[0].tv_usec < 0 || ktvs[0].tv_usec >= 1000000 ||
|
|
ktvs[1].tv_usec < 0 || ktvs[1].tv_usec >= 1000000)
|
|
return -EINVAL;
|
|
|
|
tv[0].tv_sec = ktvs[0].tv_sec;
|
|
tv[0].tv_nsec = 1000 * ktvs[0].tv_usec;
|
|
tv[1].tv_sec = ktvs[1].tv_sec;
|
|
tv[1].tv_nsec = 1000 * ktvs[1].tv_usec;
|
|
}
|
|
|
|
return do_utimes(AT_FDCWD, filename, tvs ? tv : NULL, 0);
|
|
}
|
|
|
|
SYSCALL_DEFINE5(osf_select, int, n, fd_set __user *, inp, fd_set __user *, outp,
|
|
fd_set __user *, exp, struct timeval32 __user *, tvp)
|
|
{
|
|
struct timespec end_time, *to = NULL;
|
|
if (tvp) {
|
|
time_t sec, usec;
|
|
|
|
to = &end_time;
|
|
|
|
if (!access_ok(VERIFY_READ, tvp, sizeof(*tvp))
|
|
|| __get_user(sec, &tvp->tv_sec)
|
|
|| __get_user(usec, &tvp->tv_usec)) {
|
|
return -EFAULT;
|
|
}
|
|
|
|
if (sec < 0 || usec < 0)
|
|
return -EINVAL;
|
|
|
|
if (poll_select_set_timeout(to, sec, usec * NSEC_PER_USEC))
|
|
return -EINVAL;
|
|
|
|
}
|
|
|
|
/* OSF does not copy back the remaining time. */
|
|
return core_sys_select(n, inp, outp, exp, to);
|
|
}
|
|
|
|
struct rusage32 {
|
|
struct timeval32 ru_utime; /* user time used */
|
|
struct timeval32 ru_stime; /* system time used */
|
|
long ru_maxrss; /* maximum resident set size */
|
|
long ru_ixrss; /* integral shared memory size */
|
|
long ru_idrss; /* integral unshared data size */
|
|
long ru_isrss; /* integral unshared stack size */
|
|
long ru_minflt; /* page reclaims */
|
|
long ru_majflt; /* page faults */
|
|
long ru_nswap; /* swaps */
|
|
long ru_inblock; /* block input operations */
|
|
long ru_oublock; /* block output operations */
|
|
long ru_msgsnd; /* messages sent */
|
|
long ru_msgrcv; /* messages received */
|
|
long ru_nsignals; /* signals received */
|
|
long ru_nvcsw; /* voluntary context switches */
|
|
long ru_nivcsw; /* involuntary " */
|
|
};
|
|
|
|
SYSCALL_DEFINE2(osf_getrusage, int, who, struct rusage32 __user *, ru)
|
|
{
|
|
struct rusage32 r;
|
|
u64 utime, stime;
|
|
unsigned long utime_jiffies, stime_jiffies;
|
|
|
|
if (who != RUSAGE_SELF && who != RUSAGE_CHILDREN)
|
|
return -EINVAL;
|
|
|
|
memset(&r, 0, sizeof(r));
|
|
switch (who) {
|
|
case RUSAGE_SELF:
|
|
task_cputime(current, &utime, &stime);
|
|
utime_jiffies = nsecs_to_jiffies(utime);
|
|
stime_jiffies = nsecs_to_jiffies(stime);
|
|
jiffies_to_timeval32(utime_jiffies, &r.ru_utime);
|
|
jiffies_to_timeval32(stime_jiffies, &r.ru_stime);
|
|
r.ru_minflt = current->min_flt;
|
|
r.ru_majflt = current->maj_flt;
|
|
break;
|
|
case RUSAGE_CHILDREN:
|
|
utime_jiffies = nsecs_to_jiffies(current->signal->cutime);
|
|
stime_jiffies = nsecs_to_jiffies(current->signal->cstime);
|
|
jiffies_to_timeval32(utime_jiffies, &r.ru_utime);
|
|
jiffies_to_timeval32(stime_jiffies, &r.ru_stime);
|
|
r.ru_minflt = current->signal->cmin_flt;
|
|
r.ru_majflt = current->signal->cmaj_flt;
|
|
break;
|
|
}
|
|
|
|
return copy_to_user(ru, &r, sizeof(r)) ? -EFAULT : 0;
|
|
}
|
|
|
|
SYSCALL_DEFINE4(osf_wait4, pid_t, pid, int __user *, ustatus, int, options,
|
|
struct rusage32 __user *, ur)
|
|
{
|
|
struct rusage r;
|
|
long ret, err;
|
|
unsigned int status = 0;
|
|
mm_segment_t old_fs;
|
|
|
|
if (!ur)
|
|
return sys_wait4(pid, ustatus, options, NULL);
|
|
|
|
old_fs = get_fs();
|
|
|
|
set_fs (KERNEL_DS);
|
|
ret = sys_wait4(pid, (unsigned int __user *) &status, options,
|
|
(struct rusage __user *) &r);
|
|
set_fs (old_fs);
|
|
|
|
if (!access_ok(VERIFY_WRITE, ur, sizeof(*ur)))
|
|
return -EFAULT;
|
|
|
|
err = 0;
|
|
err |= put_user(status, ustatus);
|
|
err |= __put_user(r.ru_utime.tv_sec, &ur->ru_utime.tv_sec);
|
|
err |= __put_user(r.ru_utime.tv_usec, &ur->ru_utime.tv_usec);
|
|
err |= __put_user(r.ru_stime.tv_sec, &ur->ru_stime.tv_sec);
|
|
err |= __put_user(r.ru_stime.tv_usec, &ur->ru_stime.tv_usec);
|
|
err |= __put_user(r.ru_maxrss, &ur->ru_maxrss);
|
|
err |= __put_user(r.ru_ixrss, &ur->ru_ixrss);
|
|
err |= __put_user(r.ru_idrss, &ur->ru_idrss);
|
|
err |= __put_user(r.ru_isrss, &ur->ru_isrss);
|
|
err |= __put_user(r.ru_minflt, &ur->ru_minflt);
|
|
err |= __put_user(r.ru_majflt, &ur->ru_majflt);
|
|
err |= __put_user(r.ru_nswap, &ur->ru_nswap);
|
|
err |= __put_user(r.ru_inblock, &ur->ru_inblock);
|
|
err |= __put_user(r.ru_oublock, &ur->ru_oublock);
|
|
err |= __put_user(r.ru_msgsnd, &ur->ru_msgsnd);
|
|
err |= __put_user(r.ru_msgrcv, &ur->ru_msgrcv);
|
|
err |= __put_user(r.ru_nsignals, &ur->ru_nsignals);
|
|
err |= __put_user(r.ru_nvcsw, &ur->ru_nvcsw);
|
|
err |= __put_user(r.ru_nivcsw, &ur->ru_nivcsw);
|
|
|
|
return err ? err : ret;
|
|
}
|
|
|
|
/*
|
|
* I don't know what the parameters are: the first one
|
|
* seems to be a timeval pointer, and I suspect the second
|
|
* one is the time remaining.. Ho humm.. No documentation.
|
|
*/
|
|
SYSCALL_DEFINE2(osf_usleep_thread, struct timeval32 __user *, sleep,
|
|
struct timeval32 __user *, remain)
|
|
{
|
|
struct timeval tmp;
|
|
unsigned long ticks;
|
|
|
|
if (get_tv32(&tmp, sleep))
|
|
goto fault;
|
|
|
|
ticks = timeval_to_jiffies(&tmp);
|
|
|
|
ticks = schedule_timeout_interruptible(ticks);
|
|
|
|
if (remain) {
|
|
jiffies_to_timeval(ticks, &tmp);
|
|
if (put_tv32(remain, &tmp))
|
|
goto fault;
|
|
}
|
|
|
|
return 0;
|
|
fault:
|
|
return -EFAULT;
|
|
}
|
|
|
|
|
|
struct timex32 {
|
|
unsigned int modes; /* mode selector */
|
|
long offset; /* time offset (usec) */
|
|
long freq; /* frequency offset (scaled ppm) */
|
|
long maxerror; /* maximum error (usec) */
|
|
long esterror; /* estimated error (usec) */
|
|
int status; /* clock command/status */
|
|
long constant; /* pll time constant */
|
|
long precision; /* clock precision (usec) (read only) */
|
|
long tolerance; /* clock frequency tolerance (ppm)
|
|
* (read only)
|
|
*/
|
|
struct timeval32 time; /* (read only) */
|
|
long tick; /* (modified) usecs between clock ticks */
|
|
|
|
long ppsfreq; /* pps frequency (scaled ppm) (ro) */
|
|
long jitter; /* pps jitter (us) (ro) */
|
|
int shift; /* interval duration (s) (shift) (ro) */
|
|
long stabil; /* pps stability (scaled ppm) (ro) */
|
|
long jitcnt; /* jitter limit exceeded (ro) */
|
|
long calcnt; /* calibration intervals (ro) */
|
|
long errcnt; /* calibration errors (ro) */
|
|
long stbcnt; /* stability limit exceeded (ro) */
|
|
|
|
int :32; int :32; int :32; int :32;
|
|
int :32; int :32; int :32; int :32;
|
|
int :32; int :32; int :32; int :32;
|
|
};
|
|
|
|
SYSCALL_DEFINE1(old_adjtimex, struct timex32 __user *, txc_p)
|
|
{
|
|
struct timex txc;
|
|
int ret;
|
|
|
|
/* copy relevant bits of struct timex. */
|
|
if (copy_from_user(&txc, txc_p, offsetof(struct timex32, time)) ||
|
|
copy_from_user(&txc.tick, &txc_p->tick, sizeof(struct timex32) -
|
|
offsetof(struct timex32, tick)))
|
|
return -EFAULT;
|
|
|
|
ret = do_adjtimex(&txc);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
/* copy back to timex32 */
|
|
if (copy_to_user(txc_p, &txc, offsetof(struct timex32, time)) ||
|
|
(copy_to_user(&txc_p->tick, &txc.tick, sizeof(struct timex32) -
|
|
offsetof(struct timex32, tick))) ||
|
|
(put_tv32(&txc_p->time, &txc.time)))
|
|
return -EFAULT;
|
|
|
|
return ret;
|
|
}
|
|
|
|
/* Get an address range which is currently unmapped. Similar to the
|
|
generic version except that we know how to honor ADDR_LIMIT_32BIT. */
|
|
|
|
static unsigned long
|
|
arch_get_unmapped_area_1(unsigned long addr, unsigned long len,
|
|
unsigned long limit)
|
|
{
|
|
struct vm_unmapped_area_info info;
|
|
|
|
info.flags = 0;
|
|
info.length = len;
|
|
info.low_limit = addr;
|
|
info.high_limit = limit;
|
|
info.align_mask = 0;
|
|
info.align_offset = 0;
|
|
return vm_unmapped_area(&info);
|
|
}
|
|
|
|
unsigned long
|
|
arch_get_unmapped_area(struct file *filp, unsigned long addr,
|
|
unsigned long len, unsigned long pgoff,
|
|
unsigned long flags)
|
|
{
|
|
unsigned long limit;
|
|
|
|
/* "32 bit" actually means 31 bit, since pointers sign extend. */
|
|
if (current->personality & ADDR_LIMIT_32BIT)
|
|
limit = 0x80000000;
|
|
else
|
|
limit = TASK_SIZE;
|
|
|
|
if (len > limit)
|
|
return -ENOMEM;
|
|
|
|
if (flags & MAP_FIXED)
|
|
return addr;
|
|
|
|
/* First, see if the given suggestion fits.
|
|
|
|
The OSF/1 loader (/sbin/loader) relies on us returning an
|
|
address larger than the requested if one exists, which is
|
|
a terribly broken way to program.
|
|
|
|
That said, I can see the use in being able to suggest not
|
|
merely specific addresses, but regions of memory -- perhaps
|
|
this feature should be incorporated into all ports? */
|
|
|
|
if (addr) {
|
|
addr = arch_get_unmapped_area_1 (PAGE_ALIGN(addr), len, limit);
|
|
if (addr != (unsigned long) -ENOMEM)
|
|
return addr;
|
|
}
|
|
|
|
/* Next, try allocating at TASK_UNMAPPED_BASE. */
|
|
addr = arch_get_unmapped_area_1 (PAGE_ALIGN(TASK_UNMAPPED_BASE),
|
|
len, limit);
|
|
if (addr != (unsigned long) -ENOMEM)
|
|
return addr;
|
|
|
|
/* Finally, try allocating in low memory. */
|
|
addr = arch_get_unmapped_area_1 (PAGE_SIZE, len, limit);
|
|
|
|
return addr;
|
|
}
|
|
|
|
#ifdef CONFIG_OSF4_COMPAT
|
|
|
|
/* Clear top 32 bits of iov_len in the user's buffer for
|
|
compatibility with old versions of OSF/1 where iov_len
|
|
was defined as int. */
|
|
static int
|
|
osf_fix_iov_len(const struct iovec __user *iov, unsigned long count)
|
|
{
|
|
unsigned long i;
|
|
|
|
for (i = 0 ; i < count ; i++) {
|
|
int __user *iov_len_high = (int __user *)&iov[i].iov_len + 1;
|
|
|
|
if (put_user(0, iov_len_high))
|
|
return -EFAULT;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
SYSCALL_DEFINE3(osf_readv, unsigned long, fd,
|
|
const struct iovec __user *, vector, unsigned long, count)
|
|
{
|
|
if (unlikely(personality(current->personality) == PER_OSF4))
|
|
if (osf_fix_iov_len(vector, count))
|
|
return -EFAULT;
|
|
return sys_readv(fd, vector, count);
|
|
}
|
|
|
|
SYSCALL_DEFINE3(osf_writev, unsigned long, fd,
|
|
const struct iovec __user *, vector, unsigned long, count)
|
|
{
|
|
if (unlikely(personality(current->personality) == PER_OSF4))
|
|
if (osf_fix_iov_len(vector, count))
|
|
return -EFAULT;
|
|
return sys_writev(fd, vector, count);
|
|
}
|
|
|
|
#endif
|
|
|
|
SYSCALL_DEFINE2(osf_getpriority, int, which, int, who)
|
|
{
|
|
int prio = sys_getpriority(which, who);
|
|
if (prio >= 0) {
|
|
/* Return value is the unbiased priority, i.e. 20 - prio.
|
|
This does result in negative return values, so signal
|
|
no error */
|
|
force_successful_syscall_return();
|
|
prio = 20 - prio;
|
|
}
|
|
return prio;
|
|
}
|
|
|
|
SYSCALL_DEFINE0(getxuid)
|
|
{
|
|
current_pt_regs()->r20 = sys_geteuid();
|
|
return sys_getuid();
|
|
}
|
|
|
|
SYSCALL_DEFINE0(getxgid)
|
|
{
|
|
current_pt_regs()->r20 = sys_getegid();
|
|
return sys_getgid();
|
|
}
|
|
|
|
SYSCALL_DEFINE0(getxpid)
|
|
{
|
|
current_pt_regs()->r20 = sys_getppid();
|
|
return sys_getpid();
|
|
}
|
|
|
|
SYSCALL_DEFINE0(alpha_pipe)
|
|
{
|
|
int fd[2];
|
|
int res = do_pipe_flags(fd, 0);
|
|
if (!res) {
|
|
/* The return values are in $0 and $20. */
|
|
current_pt_regs()->r20 = fd[1];
|
|
res = fd[0];
|
|
}
|
|
return res;
|
|
}
|
|
|
|
SYSCALL_DEFINE1(sethae, unsigned long, val)
|
|
{
|
|
current_pt_regs()->hae = val;
|
|
return 0;
|
|
}
|