sys_ia32.c
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上传日期:2013-02-24
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文件大小:111k
- /*
- * sys_ia32.c: Conversion between 32bit and 64bit native syscalls. Derived from sys_sparc32.c.
- *
- * Copyright (C) 2000 VA Linux Co
- * Copyright (C) 2000 Don Dugger <n0ano@valinux.com>
- * Copyright (C) 1999 Arun Sharma <arun.sharma@intel.com>
- * Copyright (C) 1997,1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
- * Copyright (C) 1997 David S. Miller (davem@caip.rutgers.edu)
- * Copyright (C) 2000-2001 Hewlett-Packard Co
- * David Mosberger-Tang <davidm@hpl.hp.com>
- *
- * These routines maintain argument size conversion between 32bit and 64bit
- * environment.
- */
- #include <linux/config.h>
- #include <linux/kernel.h>
- #include <linux/sysctl.h>
- #include <linux/sched.h>
- #include <linux/fs.h>
- #include <linux/file.h>
- #include <linux/signal.h>
- #include <linux/utime.h>
- #include <linux/resource.h>
- #include <linux/times.h>
- #include <linux/utsname.h>
- #include <linux/timex.h>
- #include <linux/smp.h>
- #include <linux/smp_lock.h>
- #include <linux/sem.h>
- #include <linux/msg.h>
- #include <linux/mm.h>
- #include <linux/shm.h>
- #include <linux/slab.h>
- #include <linux/uio.h>
- #include <linux/nfs_fs.h>
- #include <linux/smb_fs.h>
- #include <linux/smb_mount.h>
- #include <linux/ncp_fs.h>
- #include <linux/quota.h>
- #include <linux/module.h>
- #include <linux/sunrpc/svc.h>
- #include <linux/nfsd/nfsd.h>
- #include <linux/nfsd/cache.h>
- #include <linux/nfsd/xdr.h>
- #include <linux/nfsd/syscall.h>
- #include <linux/poll.h>
- #include <linux/personality.h>
- #include <linux/stat.h>
- #include <linux/ipc.h>
- #include <asm/types.h>
- #include <asm/uaccess.h>
- #include <asm/semaphore.h>
- #include <net/scm.h>
- #include <net/sock.h>
- #include <asm/ia32.h>
- #define DEBUG 0
- #if DEBUG
- # define DBG(fmt...) printk(KERN_DEBUG fmt)
- #else
- # define DBG(fmt...)
- #endif
- #define A(__x) ((unsigned long)(__x))
- #define AA(__x) ((unsigned long)(__x))
- #define ROUND_UP(x,a) ((__typeof__(x))(((unsigned long)(x) + ((a) - 1)) & ~((a) - 1)))
- #define NAME_OFFSET(de) ((int) ((de)->d_name - (char *) (de)))
- #define OFFSET4K(a) ((a) & 0xfff)
- #define PAGE_START(addr) ((addr) & PAGE_MASK)
- #define PAGE_OFF(addr) ((addr) & ~PAGE_MASK)
- extern asmlinkage long sys_execve (char *, char **, char **, struct pt_regs *);
- extern asmlinkage long sys_mprotect (unsigned long, size_t, unsigned long);
- extern asmlinkage long sys_munmap (unsigned long, size_t);
- extern unsigned long arch_get_unmapped_area (struct file *, unsigned long, unsigned long,
- unsigned long, unsigned long);
- /* forward declaration: */
- asmlinkage long sys32_mprotect (unsigned int, unsigned int, int);
- /*
- * Anything that modifies or inspects ia32 user virtual memory must hold this semaphore
- * while doing so.
- */
- /* XXX make per-mm: */
- static DECLARE_MUTEX(ia32_mmap_sem);
- static int
- nargs (unsigned int arg, char **ap)
- {
- unsigned int addr;
- int n, err;
- if (!arg)
- return 0;
- n = 0;
- do {
- err = get_user(addr, (unsigned int *)A(arg));
- if (err)
- return err;
- if (ap)
- *ap++ = (char *) A(addr);
- arg += sizeof(unsigned int);
- n++;
- } while (addr);
- return n - 1;
- }
- asmlinkage long
- sys32_execve (char *filename, unsigned int argv, unsigned int envp,
- int dummy3, int dummy4, int dummy5, int dummy6, int dummy7,
- int stack)
- {
- struct pt_regs *regs = (struct pt_regs *)&stack;
- unsigned long old_map_base, old_task_size, tssd;
- char **av, **ae;
- int na, ne, len;
- long r;
- na = nargs(argv, NULL);
- if (na < 0)
- return na;
- ne = nargs(envp, NULL);
- if (ne < 0)
- return ne;
- len = (na + ne + 2) * sizeof(*av);
- av = kmalloc(len, GFP_KERNEL);
- if (!av)
- return -ENOMEM;
- ae = av + na + 1;
- av[na] = NULL;
- ae[ne] = NULL;
- r = nargs(argv, av);
- if (r < 0)
- goto out;
- r = nargs(envp, ae);
- if (r < 0)
- goto out;
- old_map_base = current->thread.map_base;
- old_task_size = current->thread.task_size;
- tssd = ia64_get_kr(IA64_KR_TSSD);
- /* we may be exec'ing a 64-bit process: reset map base, task-size, and io-base: */
- current->thread.map_base = DEFAULT_MAP_BASE;
- current->thread.task_size = DEFAULT_TASK_SIZE;
- ia64_set_kr(IA64_KR_IO_BASE, current->thread.old_iob);
- ia64_set_kr(IA64_KR_TSSD, current->thread.old_k1);
- set_fs(KERNEL_DS);
- r = sys_execve(filename, av, ae, regs);
- if (r < 0) {
- /* oops, execve failed, switch back to old values... */
- ia64_set_kr(IA64_KR_IO_BASE, IA32_IOBASE);
- ia64_set_kr(IA64_KR_TSSD, tssd);
- current->thread.map_base = old_map_base;
- current->thread.task_size = old_task_size;
- set_fs(USER_DS); /* establish new task-size as the address-limit */
- out:
- kfree(av);
- }
- return r;
- }
- static inline int
- putstat (struct stat32 *ubuf, struct stat *kbuf)
- {
- int err;
- if (clear_user(ubuf, sizeof(*ubuf)))
- return 1;
- err = __put_user(kbuf->st_dev, &ubuf->st_dev);
- err |= __put_user(kbuf->st_ino, &ubuf->st_ino);
- err |= __put_user(kbuf->st_mode, &ubuf->st_mode);
- err |= __put_user(kbuf->st_nlink, &ubuf->st_nlink);
- err |= __put_user(kbuf->st_uid, &ubuf->st_uid);
- err |= __put_user(kbuf->st_gid, &ubuf->st_gid);
- err |= __put_user(kbuf->st_rdev, &ubuf->st_rdev);
- err |= __put_user(kbuf->st_size, &ubuf->st_size);
- err |= __put_user(kbuf->st_atime, &ubuf->st_atime);
- err |= __put_user(kbuf->st_mtime, &ubuf->st_mtime);
- err |= __put_user(kbuf->st_ctime, &ubuf->st_ctime);
- err |= __put_user(kbuf->st_blksize, &ubuf->st_blksize);
- err |= __put_user(kbuf->st_blocks, &ubuf->st_blocks);
- return err;
- }
- extern asmlinkage long sys_newstat (char * filename, struct stat * statbuf);
- asmlinkage long
- sys32_newstat (char *filename, struct stat32 *statbuf)
- {
- int ret;
- struct stat s;
- mm_segment_t old_fs = get_fs();
- set_fs(KERNEL_DS);
- ret = sys_newstat(filename, &s);
- set_fs(old_fs);
- if (putstat(statbuf, &s))
- return -EFAULT;
- return ret;
- }
- extern asmlinkage long sys_newlstat(char * filename, struct stat * statbuf);
- asmlinkage long
- sys32_newlstat (char *filename, struct stat32 *statbuf)
- {
- mm_segment_t old_fs = get_fs();
- struct stat s;
- int ret;
- set_fs(KERNEL_DS);
- ret = sys_newlstat(filename, &s);
- set_fs(old_fs);
- if (putstat(statbuf, &s))
- return -EFAULT;
- return ret;
- }
- extern asmlinkage long sys_newfstat(unsigned int fd, struct stat * statbuf);
- asmlinkage long
- sys32_newfstat (unsigned int fd, struct stat32 *statbuf)
- {
- mm_segment_t old_fs = get_fs();
- struct stat s;
- int ret;
- set_fs(KERNEL_DS);
- ret = sys_newfstat(fd, &s);
- set_fs(old_fs);
- if (putstat(statbuf, &s))
- return -EFAULT;
- return ret;
- }
- #if PAGE_SHIFT > IA32_PAGE_SHIFT
- static int
- get_page_prot (unsigned long addr)
- {
- struct vm_area_struct *vma = find_vma(current->mm, addr);
- int prot = 0;
- if (!vma || vma->vm_start > addr)
- return 0;
- if (vma->vm_flags & VM_READ)
- prot |= PROT_READ;
- if (vma->vm_flags & VM_WRITE)
- prot |= PROT_WRITE;
- if (vma->vm_flags & VM_EXEC)
- prot |= PROT_EXEC;
- return prot;
- }
- /*
- * Map a subpage by creating an anonymous page that contains the union of the old page and
- * the subpage.
- */
- static unsigned long
- mmap_subpage (struct file *file, unsigned long start, unsigned long end, int prot, int flags,
- loff_t off)
- {
- void *page = (void *) get_zeroed_page(GFP_KERNEL);
- struct inode *inode;
- unsigned long ret;
- int old_prot = get_page_prot(start);
- DBG("mmap_subpage(file=%p,start=0x%lx,end=0x%lx,prot=%x,flags=%x,off=0x%llx)n",
- file, start, end, prot, flags, off);
- if (!page)
- return -ENOMEM;
- if (old_prot)
- copy_from_user(page, (void *) PAGE_START(start), PAGE_SIZE);
- down_write(¤t->mm->mmap_sem);
- {
- ret = do_mmap(0, PAGE_START(start), PAGE_SIZE, prot | PROT_WRITE,
- flags | MAP_FIXED | MAP_ANONYMOUS, 0);
- }
- up_write(¤t->mm->mmap_sem);
- if (IS_ERR((void *) ret))
- goto out;
- if (old_prot) {
- /* copy back the old page contents. */
- if (PAGE_OFF(start))
- copy_to_user((void *) PAGE_START(start), page, PAGE_OFF(start));
- if (PAGE_OFF(end))
- copy_to_user((void *) end, page + PAGE_OFF(end),
- PAGE_SIZE - PAGE_OFF(end));
- }
- if (!(flags & MAP_ANONYMOUS)) {
- /* read the file contents */
- inode = file->f_dentry->d_inode;
- if (!inode->i_fop || !file->f_op->read
- || ((*file->f_op->read)(file, (char *) start, end - start, &off) < 0))
- {
- ret = -EINVAL;
- goto out;
- }
- }
- if (!(prot & PROT_WRITE))
- ret = sys_mprotect(PAGE_START(start), PAGE_SIZE, prot | old_prot);
- out:
- free_page((unsigned long) page);
- return ret;
- }
- static unsigned long
- emulate_mmap (struct file *file, unsigned long start, unsigned long len, int prot, int flags,
- loff_t off)
- {
- unsigned long tmp, end, pend, pstart, ret, is_congruent, fudge = 0;
- struct inode *inode;
- loff_t poff;
- end = start + len;
- pstart = PAGE_START(start);
- pend = PAGE_ALIGN(end);
- if (flags & MAP_FIXED) {
- if (start > pstart) {
- if (flags & MAP_SHARED)
- printk(KERN_INFO
- "%s(%d): emulate_mmap() can't share head (addr=0x%lx)n",
- current->comm, current->pid, start);
- ret = mmap_subpage(file, start, min(PAGE_ALIGN(start), end), prot, flags,
- off);
- if (IS_ERR((void *) ret))
- return ret;
- pstart += PAGE_SIZE;
- if (pstart >= pend)
- return start; /* done */
- }
- if (end < pend) {
- if (flags & MAP_SHARED)
- printk(KERN_INFO
- "%s(%d): emulate_mmap() can't share tail (end=0x%lx)n",
- current->comm, current->pid, end);
- ret = mmap_subpage(file, max(start, PAGE_START(end)), end, prot, flags,
- (off + len) - PAGE_OFF(end));
- if (IS_ERR((void *) ret))
- return ret;
- pend -= PAGE_SIZE;
- if (pstart >= pend)
- return start; /* done */
- }
- } else {
- /*
- * If a start address was specified, use it if the entire rounded out area
- * is available.
- */
- if (start && !pstart)
- fudge = 1; /* handle case of mapping to range (0,PAGE_SIZE) */
- tmp = arch_get_unmapped_area(file, pstart - fudge, pend - pstart, 0, flags);
- if (tmp != pstart) {
- pstart = tmp;
- start = pstart + PAGE_OFF(off); /* make start congruent with off */
- end = start + len;
- pend = PAGE_ALIGN(end);
- }
- }
- poff = off + (pstart - start); /* note: (pstart - start) may be negative */
- is_congruent = (flags & MAP_ANONYMOUS) || (PAGE_OFF(poff) == 0);
- if ((flags & MAP_SHARED) && !is_congruent)
- printk(KERN_INFO "%s(%d): emulate_mmap() can't share contents of incongruent mmap "
- "(addr=0x%lx,off=0x%llx)n", current->comm, current->pid, start, off);
- DBG("mmap_body: mapping [0x%lx-0x%lx) %s with poff 0x%llxn", pstart, pend,
- is_congruent ? "congruent" : "not congruent", poff);
- down_write(¤t->mm->mmap_sem);
- {
- if (!(flags & MAP_ANONYMOUS) && is_congruent)
- ret = do_mmap(file, pstart, pend - pstart, prot, flags | MAP_FIXED, poff);
- else
- ret = do_mmap(0, pstart, pend - pstart,
- prot | ((flags & MAP_ANONYMOUS) ? 0 : PROT_WRITE),
- flags | MAP_FIXED | MAP_ANONYMOUS, 0);
- }
- up_write(¤t->mm->mmap_sem);
- if (IS_ERR((void *) ret))
- return ret;
- if (!is_congruent) {
- /* read the file contents */
- inode = file->f_dentry->d_inode;
- if (!inode->i_fop || !file->f_op->read
- || ((*file->f_op->read)(file, (char *) pstart, pend - pstart, &poff) < 0))
- {
- sys_munmap(pstart, pend - pstart);
- return -EINVAL;
- }
- if (!(prot & PROT_WRITE) && sys_mprotect(pstart, pend - pstart, prot) < 0)
- return EINVAL;
- }
- return start;
- }
- #endif /* PAGE_SHIFT > IA32_PAGE_SHIFT */
- static inline unsigned int
- get_prot32 (unsigned int prot)
- {
- if (prot & PROT_WRITE)
- /* on x86, PROT_WRITE implies PROT_READ which implies PROT_EEC */
- prot |= PROT_READ | PROT_WRITE | PROT_EXEC;
- else if (prot & (PROT_READ | PROT_EXEC))
- /* on x86, there is no distinction between PROT_READ and PROT_EXEC */
- prot |= (PROT_READ | PROT_EXEC);
- return prot;
- }
- unsigned long
- ia32_do_mmap (struct file *file, unsigned long addr, unsigned long len, int prot, int flags,
- loff_t offset)
- {
- DBG("ia32_do_mmap(file=%p,addr=0x%lx,len=0x%lx,prot=%x,flags=%x,offset=0x%llx)n",
- file, addr, len, prot, flags, offset);
- if (file && (!file->f_op || !file->f_op->mmap))
- return -ENODEV;
- len = IA32_PAGE_ALIGN(len);
- if (len == 0)
- return addr;
- if (len > IA32_PAGE_OFFSET || addr > IA32_PAGE_OFFSET - len)
- return -EINVAL;
- if (OFFSET4K(offset))
- return -EINVAL;
- prot = get_prot32(prot);
- #if PAGE_SHIFT > IA32_PAGE_SHIFT
- down(&ia32_mmap_sem);
- {
- addr = emulate_mmap(file, addr, len, prot, flags, offset);
- }
- up(&ia32_mmap_sem);
- #else
- down_write(¤t->mm->mmap_sem);
- {
- addr = do_mmap(file, addr, len, prot, flags, offset);
- }
- up_write(¤t->mm->mmap_sem);
- #endif
- DBG("ia32_do_mmap: returning 0x%lxn", addr);
- return addr;
- }
- /*
- * Linux/i386 didn't use to be able to handle more than 4 system call parameters, so these
- * system calls used a memory block for parameter passing..
- */
- struct mmap_arg_struct {
- unsigned int addr;
- unsigned int len;
- unsigned int prot;
- unsigned int flags;
- unsigned int fd;
- unsigned int offset;
- };
- asmlinkage long
- sys32_mmap (struct mmap_arg_struct *arg)
- {
- struct mmap_arg_struct a;
- struct file *file = NULL;
- unsigned long addr;
- int flags;
- if (copy_from_user(&a, arg, sizeof(a)))
- return -EFAULT;
- if (OFFSET4K(a.offset))
- return -EINVAL;
- flags = a.flags;
- flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE);
- if (!(flags & MAP_ANONYMOUS)) {
- file = fget(a.fd);
- if (!file)
- return -EBADF;
- }
- addr = ia32_do_mmap(file, a.addr, a.len, a.prot, flags, a.offset);
- if (file)
- fput(file);
- return addr;
- }
- asmlinkage long
- sys32_mmap2 (unsigned int addr, unsigned int len, unsigned int prot, unsigned int flags,
- unsigned int fd, unsigned int pgoff)
- {
- struct file *file = NULL;
- unsigned long retval;
- flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE);
- if (!(flags & MAP_ANONYMOUS)) {
- file = fget(fd);
- if (!file)
- return -EBADF;
- }
- retval = ia32_do_mmap(file, addr, len, prot, flags,
- (unsigned long) pgoff << IA32_PAGE_SHIFT);
- if (file)
- fput(file);
- return retval;
- }
- asmlinkage long
- sys32_munmap (unsigned int start, unsigned int len)
- {
- unsigned int end = start + len;
- long ret;
- #if PAGE_SHIFT <= IA32_PAGE_SHIFT
- ret = sys_munmap(start, end - start);
- #else
- if (start > end)
- return -EINVAL;
- start = PAGE_ALIGN(start);
- end = PAGE_START(end);
- if (start >= end)
- return 0;
- down(&ia32_mmap_sem);
- {
- ret = sys_munmap(start, end - start);
- }
- up(&ia32_mmap_sem);
- #endif
- return ret;
- }
- #if PAGE_SHIFT > IA32_PAGE_SHIFT
- /*
- * When mprotect()ing a partial page, we set the permission to the union of the old
- * settings and the new settings. In other words, it's only possible to make access to a
- * partial page less restrictive.
- */
- static long
- mprotect_subpage (unsigned long address, int new_prot)
- {
- int old_prot;
- if (new_prot == PROT_NONE)
- return 0; /* optimize case where nothing changes... */
- old_prot = get_page_prot(address);
- return sys_mprotect(address, PAGE_SIZE, new_prot | old_prot);
- }
- #endif /* PAGE_SHIFT > IA32_PAGE_SHIFT */
- asmlinkage long
- sys32_mprotect (unsigned int start, unsigned int len, int prot)
- {
- unsigned long end = start + len;
- #if PAGE_SHIFT > IA32_PAGE_SHIFT
- long retval = 0;
- #endif
- prot = get_prot32(prot);
- #if PAGE_SHIFT <= IA32_PAGE_SHIFT
- return sys_mprotect(start, end - start, prot);
- #else
- if (OFFSET4K(start))
- return -EINVAL;
- end = IA32_PAGE_ALIGN(end);
- if (end < start)
- return -EINVAL;
- down(&ia32_mmap_sem);
- {
- if (PAGE_OFF(start)) {
- /* start address is 4KB aligned but not page aligned. */
- retval = mprotect_subpage(PAGE_START(start), prot);
- if (retval < 0)
- goto out;
- start = PAGE_ALIGN(start);
- if (start >= end)
- goto out; /* retval is already zero... */
- }
- if (PAGE_OFF(end)) {
- /* end address is 4KB aligned but not page aligned. */
- retval = mprotect_subpage(PAGE_START(end), prot);
- if (retval < 0)
- return retval;
- end = PAGE_START(end);
- }
- retval = sys_mprotect(start, end - start, prot);
- }
- out:
- up(&ia32_mmap_sem);
- return retval;
- #endif
- }
- asmlinkage long
- sys32_pipe (int *fd)
- {
- int retval;
- int fds[2];
- retval = do_pipe(fds);
- if (retval)
- goto out;
- if (copy_to_user(fd, fds, sizeof(fds)))
- retval = -EFAULT;
- out:
- return retval;
- }
- static inline int
- put_statfs (struct statfs32 *ubuf, struct statfs *kbuf)
- {
- int err;
- if (!access_ok(VERIFY_WRITE, ubuf, sizeof(*ubuf)))
- return -EFAULT;
- err = __put_user(kbuf->f_type, &ubuf->f_type);
- err |= __put_user(kbuf->f_bsize, &ubuf->f_bsize);
- err |= __put_user(kbuf->f_blocks, &ubuf->f_blocks);
- err |= __put_user(kbuf->f_bfree, &ubuf->f_bfree);
- err |= __put_user(kbuf->f_bavail, &ubuf->f_bavail);
- err |= __put_user(kbuf->f_files, &ubuf->f_files);
- err |= __put_user(kbuf->f_ffree, &ubuf->f_ffree);
- err |= __put_user(kbuf->f_namelen, &ubuf->f_namelen);
- err |= __put_user(kbuf->f_fsid.val[0], &ubuf->f_fsid.val[0]);
- err |= __put_user(kbuf->f_fsid.val[1], &ubuf->f_fsid.val[1]);
- return err;
- }
- extern asmlinkage long sys_statfs(const char * path, struct statfs * buf);
- asmlinkage long
- sys32_statfs (const char *path, struct statfs32 *buf)
- {
- int ret;
- struct statfs s;
- mm_segment_t old_fs = get_fs();
- set_fs(KERNEL_DS);
- ret = sys_statfs(path, &s);
- set_fs(old_fs);
- if (put_statfs(buf, &s))
- return -EFAULT;
- return ret;
- }
- extern asmlinkage long sys_fstatfs(unsigned int fd, struct statfs * buf);
- asmlinkage long
- sys32_fstatfs (unsigned int fd, struct statfs32 *buf)
- {
- int ret;
- struct statfs s;
- mm_segment_t old_fs = get_fs();
- set_fs(KERNEL_DS);
- ret = sys_fstatfs(fd, &s);
- set_fs(old_fs);
- if (put_statfs(buf, &s))
- return -EFAULT;
- return ret;
- }
- 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 *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 *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 *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 *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)));
- }
- extern int do_getitimer (int which, struct itimerval *value);
- asmlinkage long
- sys32_getitimer (int which, struct itimerval32 *it)
- {
- struct itimerval kit;
- int error;
- error = do_getitimer(which, &kit);
- if (!error && put_it32(it, &kit))
- error = -EFAULT;
- return error;
- }
- extern int do_setitimer (int which, struct itimerval *, struct itimerval *);
- asmlinkage long
- sys32_setitimer (int which, struct itimerval32 *in, struct itimerval32 *out)
- {
- struct itimerval kin, kout;
- int error;
- 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;
- }
- asmlinkage unsigned long
- sys32_alarm (unsigned int seconds)
- {
- struct itimerval it_new, it_old;
- unsigned int oldalarm;
- it_new.it_interval.tv_sec = it_new.it_interval.tv_usec = 0;
- it_new.it_value.tv_sec = seconds;
- it_new.it_value.tv_usec = 0;
- do_setitimer(ITIMER_REAL, &it_new, &it_old);
- oldalarm = it_old.it_value.tv_sec;
- /* ehhh.. We can't return 0 if we have an alarm pending.. */
- /* And we'd better return too much than too little anyway */
- if (it_old.it_value.tv_usec)
- oldalarm++;
- return oldalarm;
- }
- /* Translations due to time_t size differences. Which affects all
- sorts of things, like timeval and itimerval. */
- struct utimbuf_32 {
- int atime;
- int mtime;
- };
- extern asmlinkage long sys_utimes(char * filename, struct timeval * utimes);
- extern asmlinkage long sys_gettimeofday (struct timeval *tv, struct timezone *tz);
- asmlinkage long
- sys32_utime (char *filename, struct utimbuf_32 *times32)
- {
- mm_segment_t old_fs = get_fs();
- struct timeval tv[2], *tvp;
- long ret;
- if (times32) {
- if (get_user(tv[0].tv_sec, ×32->atime))
- return -EFAULT;
- tv[0].tv_usec = 0;
- if (get_user(tv[1].tv_sec, ×32->mtime))
- return -EFAULT;
- tv[1].tv_usec = 0;
- set_fs(KERNEL_DS);
- tvp = tv;
- } else
- tvp = NULL;
- ret = sys_utimes(filename, tvp);
- set_fs(old_fs);
- return ret;
- }
- extern struct timezone sys_tz;
- extern int do_sys_settimeofday (struct timeval *tv, struct timezone *tz);
- asmlinkage long
- sys32_gettimeofday (struct timeval32 *tv, struct timezone *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;
- }
- asmlinkage long
- sys32_settimeofday (struct timeval32 *tv, struct timezone *tz)
- {
- struct timeval ktv;
- struct timezone ktz;
- if (tv) {
- if (get_tv32(&ktv, tv))
- return -EFAULT;
- }
- if (tz) {
- if (copy_from_user(&ktz, tz, sizeof(ktz)))
- return -EFAULT;
- }
- return do_sys_settimeofday(tv ? &ktv : NULL, tz ? &ktz : NULL);
- }
- struct getdents32_callback {
- struct linux32_dirent * current_dir;
- struct linux32_dirent * previous;
- int count;
- int error;
- };
- struct readdir32_callback {
- struct old_linux32_dirent * dirent;
- int count;
- };
- static int
- filldir32 (void *__buf, const char *name, int namlen, loff_t offset, ino_t ino,
- unsigned int d_type)
- {
- struct linux32_dirent * dirent;
- struct getdents32_callback * buf = (struct getdents32_callback *) __buf;
- int reclen = ROUND_UP(NAME_OFFSET(dirent) + namlen + 1, 4);
- buf->error = -EINVAL; /* only used if we fail.. */
- if (reclen > buf->count)
- return -EINVAL;
- buf->error = -EFAULT; /* only used if we fail.. */
- dirent = buf->previous;
- if (dirent)
- if (put_user(offset, &dirent->d_off))
- return -EFAULT;
- dirent = buf->current_dir;
- buf->previous = dirent;
- if (put_user(ino, &dirent->d_ino)
- || put_user(reclen, &dirent->d_reclen)
- || copy_to_user(dirent->d_name, name, namlen)
- || put_user(0, dirent->d_name + namlen))
- return -EFAULT;
- ((char *) dirent) += reclen;
- buf->current_dir = dirent;
- buf->count -= reclen;
- return 0;
- }
- asmlinkage long
- sys32_getdents (unsigned int fd, struct linux32_dirent *dirent, unsigned int count)
- {
- struct file * file;
- struct linux32_dirent * lastdirent;
- struct getdents32_callback buf;
- int error;
- error = -EBADF;
- file = fget(fd);
- if (!file)
- goto out;
- buf.current_dir = dirent;
- buf.previous = NULL;
- buf.count = count;
- buf.error = 0;
- error = vfs_readdir(file, filldir32, &buf);
- if (error < 0)
- goto out_putf;
- error = buf.error;
- lastdirent = buf.previous;
- if (lastdirent) {
- error = -EINVAL;
- if (put_user(file->f_pos, &lastdirent->d_off))
- goto out_putf;
- error = count - buf.count;
- }
- out_putf:
- fput(file);
- out:
- return error;
- }
- static int
- fillonedir32 (void * __buf, const char * name, int namlen, loff_t offset, ino_t ino,
- unsigned int d_type)
- {
- struct readdir32_callback * buf = (struct readdir32_callback *) __buf;
- struct old_linux32_dirent * dirent;
- if (buf->count)
- return -EINVAL;
- buf->count++;
- dirent = buf->dirent;
- if (put_user(ino, &dirent->d_ino)
- || put_user(offset, &dirent->d_offset)
- || put_user(namlen, &dirent->d_namlen)
- || copy_to_user(dirent->d_name, name, namlen)
- || put_user(0, dirent->d_name + namlen))
- return -EFAULT;
- return 0;
- }
- asmlinkage long
- sys32_readdir (unsigned int fd, void *dirent, unsigned int count)
- {
- int error;
- struct file * file;
- struct readdir32_callback buf;
- error = -EBADF;
- file = fget(fd);
- if (!file)
- goto out;
- buf.count = 0;
- buf.dirent = dirent;
- error = vfs_readdir(file, fillonedir32, &buf);
- if (error >= 0)
- error = buf.count;
- fput(file);
- out:
- return error;
- }
- /*
- * We can actually return ERESTARTSYS instead of EINTR, but I'd
- * like to be certain this leads to no problems. So I return
- * EINTR just for safety.
- *
- * Update: ERESTARTSYS breaks at least the xview clock binary, so
- * I'm trying ERESTARTNOHAND which restart only when you want to.
- */
- #define MAX_SELECT_SECONDS
- ((unsigned long) (MAX_SCHEDULE_TIMEOUT / HZ)-1)
- #define ROUND_UP_TIME(x,y) (((x)+(y)-1)/(y))
- asmlinkage long
- sys32_select (int n, fd_set *inp, fd_set *outp, fd_set *exp, struct timeval32 *tvp32)
- {
- fd_set_bits fds;
- char *bits;
- long timeout;
- int ret, size;
- timeout = MAX_SCHEDULE_TIMEOUT;
- if (tvp32) {
- time_t sec, usec;
- ret = -EFAULT;
- if (get_user(sec, &tvp32->tv_sec) || get_user(usec, &tvp32->tv_usec))
- goto out_nofds;
- ret = -EINVAL;
- if (sec < 0 || usec < 0)
- goto out_nofds;
- if ((unsigned long) sec < MAX_SELECT_SECONDS) {
- timeout = ROUND_UP_TIME(usec, 1000000/HZ);
- timeout += sec * (unsigned long) HZ;
- }
- }
- ret = -EINVAL;
- if (n < 0)
- goto out_nofds;
- if (n > current->files->max_fdset)
- n = current->files->max_fdset;
- /*
- * We need 6 bitmaps (in/out/ex for both incoming and outgoing),
- * since we used fdset we need to allocate memory in units of
- * long-words.
- */
- ret = -ENOMEM;
- size = FDS_BYTES(n);
- bits = kmalloc(6 * size, GFP_KERNEL);
- if (!bits)
- goto out_nofds;
- fds.in = (unsigned long *) bits;
- fds.out = (unsigned long *) (bits + size);
- fds.ex = (unsigned long *) (bits + 2*size);
- fds.res_in = (unsigned long *) (bits + 3*size);
- fds.res_out = (unsigned long *) (bits + 4*size);
- fds.res_ex = (unsigned long *) (bits + 5*size);
- if ((ret = get_fd_set(n, inp, fds.in)) ||
- (ret = get_fd_set(n, outp, fds.out)) ||
- (ret = get_fd_set(n, exp, fds.ex)))
- goto out;
- zero_fd_set(n, fds.res_in);
- zero_fd_set(n, fds.res_out);
- zero_fd_set(n, fds.res_ex);
- ret = do_select(n, &fds, &timeout);
- if (tvp32 && !(current->personality & STICKY_TIMEOUTS)) {
- time_t sec = 0, usec = 0;
- if (timeout) {
- sec = timeout / HZ;
- usec = timeout % HZ;
- usec *= (1000000/HZ);
- }
- if (put_user(sec, &tvp32->tv_sec) || put_user(usec, &tvp32->tv_usec)) {
- ret = -EFAULT;
- goto out;
- }
- }
- if (ret < 0)
- goto out;
- if (!ret) {
- ret = -ERESTARTNOHAND;
- if (signal_pending(current))
- goto out;
- ret = 0;
- }
- set_fd_set(n, inp, fds.res_in);
- set_fd_set(n, outp, fds.res_out);
- set_fd_set(n, exp, fds.res_ex);
- out:
- kfree(bits);
- out_nofds:
- return ret;
- }
- struct sel_arg_struct {
- unsigned int n;
- unsigned int inp;
- unsigned int outp;
- unsigned int exp;
- unsigned int tvp;
- };
- asmlinkage long
- sys32_old_select (struct sel_arg_struct *arg)
- {
- struct sel_arg_struct a;
- if (copy_from_user(&a, arg, sizeof(a)))
- return -EFAULT;
- return sys32_select(a.n, (fd_set *) A(a.inp), (fd_set *) A(a.outp), (fd_set *) A(a.exp),
- (struct timeval32 *) A(a.tvp));
- }
- extern asmlinkage long sys_nanosleep (struct timespec *rqtp, struct timespec *rmtp);
- asmlinkage long
- sys32_nanosleep (struct timespec32 *rqtp, struct timespec32 *rmtp)
- {
- struct timespec t;
- int ret;
- mm_segment_t old_fs = get_fs();
- if (get_user (t.tv_sec, &rqtp->tv_sec) || get_user (t.tv_nsec, &rqtp->tv_nsec))
- return -EFAULT;
- set_fs(KERNEL_DS);
- ret = sys_nanosleep(&t, rmtp ? &t : NULL);
- set_fs(old_fs);
- if (rmtp && ret == -EINTR) {
- if (put_user(t.tv_sec, &rmtp->tv_sec) || put_user(t.tv_nsec, &rmtp->tv_nsec))
- return -EFAULT;
- }
- return ret;
- }
- struct iovec32 { unsigned int iov_base; int iov_len; };
- asmlinkage ssize_t sys_readv (unsigned long,const struct iovec *,unsigned long);
- asmlinkage ssize_t sys_writev (unsigned long,const struct iovec *,unsigned long);
- static struct iovec *
- get_iovec32 (struct iovec32 *iov32, struct iovec *iov_buf, u32 count, int type)
- {
- int i;
- u32 buf, len;
- struct iovec *ivp, *iov;
- /* Get the "struct iovec" from user memory */
- if (!count)
- return 0;
- if (verify_area(VERIFY_READ, iov32, sizeof(struct iovec32)*count))
- return NULL;
- if (count > UIO_MAXIOV)
- return NULL;
- if (count > UIO_FASTIOV) {
- iov = kmalloc(count*sizeof(struct iovec), GFP_KERNEL);
- if (!iov)
- return NULL;
- } else
- iov = iov_buf;
- ivp = iov;
- for (i = 0; i < count; i++) {
- if (__get_user(len, &iov32->iov_len) || __get_user(buf, &iov32->iov_base)) {
- if (iov != iov_buf)
- kfree(iov);
- return NULL;
- }
- if (verify_area(type, (void *)A(buf), len)) {
- if (iov != iov_buf)
- kfree(iov);
- return((struct iovec *)0);
- }
- ivp->iov_base = (void *)A(buf);
- ivp->iov_len = (__kernel_size_t) len;
- iov32++;
- ivp++;
- }
- return iov;
- }
- asmlinkage long
- sys32_readv (int fd, struct iovec32 *vector, u32 count)
- {
- struct iovec iovstack[UIO_FASTIOV];
- struct iovec *iov;
- long ret;
- mm_segment_t old_fs = get_fs();
- iov = get_iovec32(vector, iovstack, count, VERIFY_WRITE);
- if (!iov)
- return -EFAULT;
- set_fs(KERNEL_DS);
- ret = sys_readv(fd, iov, count);
- set_fs(old_fs);
- if (iov != iovstack)
- kfree(iov);
- return ret;
- }
- asmlinkage long
- sys32_writev (int fd, struct iovec32 *vector, u32 count)
- {
- struct iovec iovstack[UIO_FASTIOV];
- struct iovec *iov;
- long ret;
- mm_segment_t old_fs = get_fs();
- iov = get_iovec32(vector, iovstack, count, VERIFY_READ);
- if (!iov)
- return -EFAULT;
- set_fs(KERNEL_DS);
- ret = sys_writev(fd, iov, count);
- set_fs(old_fs);
- if (iov != iovstack)
- kfree(iov);
- return ret;
- }
- #define RLIM_INFINITY32 0x7fffffff
- #define RESOURCE32(x) ((x > RLIM_INFINITY32) ? RLIM_INFINITY32 : x)
- struct rlimit32 {
- int rlim_cur;
- int rlim_max;
- };
- extern asmlinkage long sys_getrlimit (unsigned int resource, struct rlimit *rlim);
- asmlinkage long
- sys32_old_getrlimit (unsigned int resource, struct rlimit32 *rlim)
- {
- mm_segment_t old_fs = get_fs();
- struct rlimit r;
- int ret;
- set_fs(KERNEL_DS);
- ret = sys_getrlimit(resource, &r);
- set_fs(old_fs);
- if (!ret) {
- ret = put_user(RESOURCE32(r.rlim_cur), &rlim->rlim_cur);
- ret |= put_user(RESOURCE32(r.rlim_max), &rlim->rlim_max);
- }
- return ret;
- }
- asmlinkage long
- sys32_getrlimit (unsigned int resource, struct rlimit32 *rlim)
- {
- mm_segment_t old_fs = get_fs();
- struct rlimit r;
- int ret;
- set_fs(KERNEL_DS);
- ret = sys_getrlimit(resource, &r);
- set_fs(old_fs);
- if (!ret) {
- if (r.rlim_cur >= 0xffffffff)
- r.rlim_cur = 0xffffffff;
- if (r.rlim_max >= 0xffffffff)
- r.rlim_max = 0xffffffff;
- ret = put_user(r.rlim_cur, &rlim->rlim_cur);
- ret |= put_user(r.rlim_max, &rlim->rlim_max);
- }
- return ret;
- }
- extern asmlinkage long sys_setrlimit (unsigned int resource, struct rlimit *rlim);
- asmlinkage long
- sys32_setrlimit (unsigned int resource, struct rlimit32 *rlim)
- {
- struct rlimit r;
- int ret;
- mm_segment_t old_fs = get_fs();
- if (resource >= RLIM_NLIMITS)
- return -EINVAL;
- if (get_user(r.rlim_cur, &rlim->rlim_cur) || get_user(r.rlim_max, &rlim->rlim_max))
- return -EFAULT;
- if (r.rlim_cur == RLIM_INFINITY32)
- r.rlim_cur = RLIM_INFINITY;
- if (r.rlim_max == RLIM_INFINITY32)
- r.rlim_max = RLIM_INFINITY;
- set_fs(KERNEL_DS);
- ret = sys_setrlimit(resource, &r);
- set_fs(old_fs);
- return ret;
- }
- /*
- * Declare the IA32 version of the msghdr
- */
- struct msghdr32 {
- unsigned int msg_name; /* Socket name */
- int msg_namelen; /* Length of name */
- unsigned int msg_iov; /* Data blocks */
- unsigned int msg_iovlen; /* Number of blocks */
- unsigned int msg_control; /* Per protocol magic (eg BSD file descriptor passing) */
- unsigned int msg_controllen; /* Length of cmsg list */
- unsigned msg_flags;
- };
- struct cmsghdr32 {
- __kernel_size_t32 cmsg_len;
- int cmsg_level;
- int cmsg_type;
- };
- /* Bleech... */
- #define __CMSG32_NXTHDR(ctl, len, cmsg, cmsglen) __cmsg32_nxthdr((ctl),(len),(cmsg),(cmsglen))
- #define CMSG32_NXTHDR(mhdr, cmsg, cmsglen) cmsg32_nxthdr((mhdr), (cmsg), (cmsglen))
- #define CMSG32_ALIGN(len) ( ((len)+sizeof(int)-1) & ~(sizeof(int)-1) )
- #define CMSG32_DATA(cmsg)
- ((void *)((char *)(cmsg) + CMSG32_ALIGN(sizeof(struct cmsghdr32))))
- #define CMSG32_SPACE(len)
- (CMSG32_ALIGN(sizeof(struct cmsghdr32)) + CMSG32_ALIGN(len))
- #define CMSG32_LEN(len) (CMSG32_ALIGN(sizeof(struct cmsghdr32)) + (len))
- #define __CMSG32_FIRSTHDR(ctl,len)
- ((len) >= sizeof(struct cmsghdr32) ? (struct cmsghdr32 *)(ctl) : (struct cmsghdr32 *)NULL)
- #define CMSG32_FIRSTHDR(msg) __CMSG32_FIRSTHDR((msg)->msg_control, (msg)->msg_controllen)
- static inline struct cmsghdr32 *
- __cmsg32_nxthdr (void *ctl, __kernel_size_t size, struct cmsghdr32 *cmsg, int cmsg_len)
- {
- struct cmsghdr32 * ptr;
- ptr = (struct cmsghdr32 *)(((unsigned char *) cmsg) + CMSG32_ALIGN(cmsg_len));
- if ((unsigned long)((char*)(ptr+1) - (char *) ctl) > size)
- return NULL;
- return ptr;
- }
- static inline struct cmsghdr32 *
- cmsg32_nxthdr (struct msghdr *msg, struct cmsghdr32 *cmsg, int cmsg_len)
- {
- return __cmsg32_nxthdr(msg->msg_control, msg->msg_controllen, cmsg, cmsg_len);
- }
- static inline int
- get_msghdr32 (struct msghdr *mp, struct msghdr32 *mp32)
- {
- int ret;
- unsigned int i;
- if (!access_ok(VERIFY_READ, mp32, sizeof(*mp32)))
- return -EFAULT;
- ret = __get_user(i, &mp32->msg_name);
- mp->msg_name = (void *)A(i);
- ret |= __get_user(mp->msg_namelen, &mp32->msg_namelen);
- ret |= __get_user(i, &mp32->msg_iov);
- mp->msg_iov = (struct iovec *)A(i);
- ret |= __get_user(mp->msg_iovlen, &mp32->msg_iovlen);
- ret |= __get_user(i, &mp32->msg_control);
- mp->msg_control = (void *)A(i);
- ret |= __get_user(mp->msg_controllen, &mp32->msg_controllen);
- ret |= __get_user(mp->msg_flags, &mp32->msg_flags);
- return ret ? -EFAULT : 0;
- }
- /*
- * There is a lot of hair here because the alignment rules (and thus placement) of cmsg
- * headers and length are different for 32-bit apps. -DaveM
- */
- static int
- get_cmsghdr32 (struct msghdr *kmsg, unsigned char *stackbuf, struct sock *sk, size_t *bufsize)
- {
- struct cmsghdr *kcmsg, *kcmsg_base;
- __kernel_size_t kcmlen, tmp;
- __kernel_size_t32 ucmlen;
- struct cmsghdr32 *ucmsg;
- long err;
- kcmlen = 0;
- kcmsg_base = kcmsg = (struct cmsghdr *)stackbuf;
- ucmsg = CMSG32_FIRSTHDR(kmsg);
- while (ucmsg != NULL) {
- if (get_user(ucmlen, &ucmsg->cmsg_len))
- return -EFAULT;
- /* Catch bogons. */
- if (CMSG32_ALIGN(ucmlen) < CMSG32_ALIGN(sizeof(struct cmsghdr32)))
- return -EINVAL;
- if ((unsigned long)(((char *)ucmsg - (char *)kmsg->msg_control) + ucmlen)
- > kmsg->msg_controllen)
- return -EINVAL;
- tmp = ((ucmlen - CMSG32_ALIGN(sizeof(*ucmsg))) +
- CMSG_ALIGN(sizeof(struct cmsghdr)));
- kcmlen += tmp;
- ucmsg = CMSG32_NXTHDR(kmsg, ucmsg, ucmlen);
- }
- if (kcmlen == 0)
- return -EINVAL;
- /*
- * The kcmlen holds the 64-bit version of the control length. It may not be
- * modified as we do not stick it into the kmsg until we have successfully copied
- * over all of the data from the user.
- */
- if (kcmlen > *bufsize) {
- *bufsize = kcmlen;
- kcmsg_base = kcmsg = sock_kmalloc(sk, kcmlen, GFP_KERNEL);
- }
- if (kcmsg == NULL)
- return -ENOBUFS;
- /* Now copy them over neatly. */
- memset(kcmsg, 0, kcmlen);
- ucmsg = CMSG32_FIRSTHDR(kmsg);
- while (ucmsg != NULL) {
- err = get_user(ucmlen, &ucmsg->cmsg_len);
- tmp = ((ucmlen - CMSG32_ALIGN(sizeof(*ucmsg))) +
- CMSG_ALIGN(sizeof(struct cmsghdr)));
- kcmsg->cmsg_len = tmp;
- err |= get_user(kcmsg->cmsg_level, &ucmsg->cmsg_level);
- err |= get_user(kcmsg->cmsg_type, &ucmsg->cmsg_type);
- /* Copy over the data. */
- err |= copy_from_user(CMSG_DATA(kcmsg), CMSG32_DATA(ucmsg),
- (ucmlen - CMSG32_ALIGN(sizeof(*ucmsg))));
- if (err)
- goto out_free_efault;
- /* Advance. */
- kcmsg = (struct cmsghdr *)((char *)kcmsg + CMSG_ALIGN(tmp));
- ucmsg = CMSG32_NXTHDR(kmsg, ucmsg, ucmlen);
- }
- /* Ok, looks like we made it. Hook it up and return success. */
- kmsg->msg_control = kcmsg_base;
- kmsg->msg_controllen = kcmlen;
- return 0;
- out_free_efault:
- if (kcmsg_base != (struct cmsghdr *)stackbuf)
- sock_kfree_s(sk, kcmsg_base, kcmlen);
- return -EFAULT;
- }
- /*
- * Verify & re-shape IA32 iovec. The caller must ensure that the
- * iovec is big enough to hold the re-shaped message iovec.
- *
- * Save time not doing verify_area. copy_*_user will make this work
- * in any case.
- *
- * Don't need to check the total size for overflow (cf net/core/iovec.c),
- * 32-bit sizes can't overflow a 64-bit count.
- */
- static inline int
- verify_iovec32 (struct msghdr *m, struct iovec *iov, char *address, int mode)
- {
- int size, err, ct;
- struct iovec32 *iov32;
- if (m->msg_namelen) {
- if (mode == VERIFY_READ) {
- err = move_addr_to_kernel(m->msg_name, m->msg_namelen, address);
- if (err < 0)
- goto out;
- }
- m->msg_name = address;
- } else
- m->msg_name = NULL;
- err = -EFAULT;
- size = m->msg_iovlen * sizeof(struct iovec32);
- if (copy_from_user(iov, m->msg_iov, size))
- goto out;
- m->msg_iov = iov;
- err = 0;
- iov32 = (struct iovec32 *)iov;
- for (ct = m->msg_iovlen; ct-- > 0; ) {
- iov[ct].iov_len = (__kernel_size_t)iov32[ct].iov_len;
- iov[ct].iov_base = (void *) A(iov32[ct].iov_base);
- err += iov[ct].iov_len;
- }
- out:
- return err;
- }
- static void
- put_cmsg32(struct msghdr *kmsg, int level, int type, int len, void *data)
- {
- struct cmsghdr32 *cm = (struct cmsghdr32 *) kmsg->msg_control;
- struct cmsghdr32 cmhdr;
- int cmlen = CMSG32_LEN(len);
- if(cm == NULL || kmsg->msg_controllen < sizeof(*cm)) {
- kmsg->msg_flags |= MSG_CTRUNC;
- return;
- }
- if(kmsg->msg_controllen < cmlen) {
- kmsg->msg_flags |= MSG_CTRUNC;
- cmlen = kmsg->msg_controllen;
- }
- cmhdr.cmsg_level = level;
- cmhdr.cmsg_type = type;
- cmhdr.cmsg_len = cmlen;
- if(copy_to_user(cm, &cmhdr, sizeof cmhdr))
- return;
- if(copy_to_user(CMSG32_DATA(cm), data,
- cmlen - sizeof(struct cmsghdr32)))
- return;
- cmlen = CMSG32_SPACE(len);
- kmsg->msg_control += cmlen;
- kmsg->msg_controllen -= cmlen;
- }
- static void
- scm_detach_fds32 (struct msghdr *kmsg, struct scm_cookie *scm)
- {
- struct cmsghdr32 *cm = (struct cmsghdr32 *) kmsg->msg_control;
- int fdmax = (kmsg->msg_controllen - sizeof(struct cmsghdr32))
- / sizeof(int);
- int fdnum = scm->fp->count;
- struct file **fp = scm->fp->fp;
- int *cmfptr;
- int err = 0, i;
- if (fdnum < fdmax)
- fdmax = fdnum;
- for (i = 0, cmfptr = (int *) CMSG32_DATA(cm);
- i < fdmax;
- i++, cmfptr++) {
- int new_fd;
- err = get_unused_fd();
- if (err < 0)
- break;
- new_fd = err;
- err = put_user(new_fd, cmfptr);
- if (err) {
- put_unused_fd(new_fd);
- break;
- }
- /* Bump the usage count and install the file. */
- get_file(fp[i]);
- current->files->fd[new_fd] = fp[i];
- }
- if (i > 0) {
- int cmlen = CMSG32_LEN(i * sizeof(int));
- if (!err)
- err = put_user(SOL_SOCKET, &cm->cmsg_level);
- if (!err)
- err = put_user(SCM_RIGHTS, &cm->cmsg_type);
- if (!err)
- err = put_user(cmlen, &cm->cmsg_len);
- if (!err) {
- cmlen = CMSG32_SPACE(i * sizeof(int));
- kmsg->msg_control += cmlen;
- kmsg->msg_controllen -= cmlen;
- }
- }
- if (i < fdnum)
- kmsg->msg_flags |= MSG_CTRUNC;
- /*
- * All of the files that fit in the message have had their
- * usage counts incremented, so we just free the list.
- */
- __scm_destroy(scm);
- }
- /*
- * In these cases we (currently) can just copy to data over verbatim because all CMSGs
- * created by the kernel have well defined types which have the same layout in both the
- * 32-bit and 64-bit API. One must add some special cased conversions here if we start
- * sending control messages with incompatible types.
- *
- * SCM_RIGHTS and SCM_CREDENTIALS are done by hand in recvmsg32 right after
- * we do our work. The remaining cases are:
- *
- * SOL_IP IP_PKTINFO struct in_pktinfo 32-bit clean
- * IP_TTL int 32-bit clean
- * IP_TOS __u8 32-bit clean
- * IP_RECVOPTS variable length 32-bit clean
- * IP_RETOPTS variable length 32-bit clean
- * (these last two are clean because the types are defined
- * by the IPv4 protocol)
- * IP_RECVERR struct sock_extended_err +
- * struct sockaddr_in 32-bit clean
- * SOL_IPV6 IPV6_RECVERR struct sock_extended_err +
- * struct sockaddr_in6 32-bit clean
- * IPV6_PKTINFO struct in6_pktinfo 32-bit clean
- * IPV6_HOPLIMIT int 32-bit clean
- * IPV6_FLOWINFO u32 32-bit clean
- * IPV6_HOPOPTS ipv6 hop exthdr 32-bit clean
- * IPV6_DSTOPTS ipv6 dst exthdr(s) 32-bit clean
- * IPV6_RTHDR ipv6 routing exthdr 32-bit clean
- * IPV6_AUTHHDR ipv6 auth exthdr 32-bit clean
- */
- static void
- cmsg32_recvmsg_fixup (struct msghdr *kmsg, unsigned long orig_cmsg_uptr)
- {
- unsigned char *workbuf, *wp;
- unsigned long bufsz, space_avail;
- struct cmsghdr *ucmsg;
- long err;
- bufsz = ((unsigned long)kmsg->msg_control) - orig_cmsg_uptr;
- space_avail = kmsg->msg_controllen + bufsz;
- wp = workbuf = kmalloc(bufsz, GFP_KERNEL);
- if (workbuf == NULL)
- goto fail;
- /* To make this more sane we assume the kernel sends back properly
- * formatted control messages. Because of how the kernel will truncate
- * the cmsg_len for MSG_TRUNC cases, we need not check that case either.
- */
- ucmsg = (struct cmsghdr *) orig_cmsg_uptr;
- while (((unsigned long)ucmsg) < ((unsigned long)kmsg->msg_control)) {
- struct cmsghdr32 *kcmsg32 = (struct cmsghdr32 *) wp;
- int clen64, clen32;
- /*
- * UCMSG is the 64-bit format CMSG entry in user-space. KCMSG32 is within
- * the kernel space temporary buffer we use to convert into a 32-bit style
- * CMSG.
- */
- err = get_user(kcmsg32->cmsg_len, &ucmsg->cmsg_len);
- err |= get_user(kcmsg32->cmsg_level, &ucmsg->cmsg_level);
- err |= get_user(kcmsg32->cmsg_type, &ucmsg->cmsg_type);
- if (err)
- goto fail2;
- clen64 = kcmsg32->cmsg_len;
- copy_from_user(CMSG32_DATA(kcmsg32), CMSG_DATA(ucmsg),
- clen64 - CMSG_ALIGN(sizeof(*ucmsg)));
- clen32 = ((clen64 - CMSG_ALIGN(sizeof(*ucmsg))) +
- CMSG32_ALIGN(sizeof(struct cmsghdr32)));
- kcmsg32->cmsg_len = clen32;
- ucmsg = (struct cmsghdr *) (((char *)ucmsg) + CMSG_ALIGN(clen64));
- wp = (((char *)kcmsg32) + CMSG32_ALIGN(clen32));
- }
- /* Copy back fixed up data, and adjust pointers. */
- bufsz = (wp - workbuf);
- if (copy_to_user((void *)orig_cmsg_uptr, workbuf, bufsz))
- goto fail2;
- kmsg->msg_control = (struct cmsghdr *) (((char *)orig_cmsg_uptr) + bufsz);
- kmsg->msg_controllen = space_avail - bufsz;
- kfree(workbuf);
- return;
- fail2:
- kfree(workbuf);
- fail:
- /*
- * If we leave the 64-bit format CMSG chunks in there, the application could get
- * confused and crash. So to ensure greater recovery, we report no CMSGs.
- */
- kmsg->msg_controllen += bufsz;
- kmsg->msg_control = (void *) orig_cmsg_uptr;
- }
- static inline void
- sockfd_put (struct socket *sock)
- {
- fput(sock->file);
- }
- /* XXX This really belongs in some header file... -DaveM */
- #define MAX_SOCK_ADDR 128 /* 108 for Unix domain -
- 16 for IP, 16 for IPX,
- 24 for IPv6,
- about 80 for AX.25 */
- extern struct socket *sockfd_lookup (int fd, int *err);
- /*
- * BSD sendmsg interface
- */
- int
- sys32_sendmsg (int fd, struct msghdr32 *msg, unsigned flags)
- {
- struct socket *sock;
- char address[MAX_SOCK_ADDR];
- struct iovec iovstack[UIO_FASTIOV], *iov = iovstack;
- unsigned char ctl[sizeof(struct cmsghdr) + 20]; /* 20 is size of ipv6_pktinfo */
- unsigned char *ctl_buf = ctl;
- struct msghdr msg_sys;
- int err, iov_size, total_len;
- size_t ctl_len;
- err = -EFAULT;
- if (get_msghdr32(&msg_sys, msg))
- goto out;
- sock = sockfd_lookup(fd, &err);
- if (!sock)
- goto out;
- /* do not move before msg_sys is valid */
- err = -EINVAL;
- if (msg_sys.msg_iovlen > UIO_MAXIOV)
- goto out_put;
- /* Check whether to allocate the iovec area*/
- err = -ENOMEM;
- iov_size = msg_sys.msg_iovlen * sizeof(struct iovec32);
- if (msg_sys.msg_iovlen > UIO_FASTIOV) {
- iov = sock_kmalloc(sock->sk, iov_size, GFP_KERNEL);
- if (!iov)
- goto out_put;
- }
- /* This will also move the address data into kernel space */
- err = verify_iovec32(&msg_sys, iov, address, VERIFY_READ);
- if (err < 0)
- goto out_freeiov;
- total_len = err;
- err = -ENOBUFS;
- if (msg_sys.msg_controllen > INT_MAX)
- goto out_freeiov;
- if (msg_sys.msg_controllen) {
- ctl_len = sizeof(ctl);
- err = get_cmsghdr32(&msg_sys, ctl_buf, sock->sk, &ctl_len);
- if (err)
- goto out_freeiov;
- ctl_buf = msg_sys.msg_control;
- }
- msg_sys.msg_flags = flags;
- if (sock->file->f_flags & O_NONBLOCK)
- msg_sys.msg_flags |= MSG_DONTWAIT;
- err = sock_sendmsg(sock, &msg_sys, total_len);
- if (ctl_buf != ctl)
- sock_kfree_s(sock->sk, ctl_buf, ctl_len);
- out_freeiov:
- if (iov != iovstack)
- sock_kfree_s(sock->sk, iov, iov_size);
- out_put:
- sockfd_put(sock);
- out:
- return err;
- }
- /*
- * BSD recvmsg interface
- */
- int
- sys32_recvmsg (int fd, struct msghdr32 *msg, unsigned int flags)
- {
- struct socket *sock;
- struct iovec iovstack[UIO_FASTIOV];
- struct iovec *iov=iovstack;
- struct msghdr msg_sys;
- unsigned long cmsg_ptr;
- int err, iov_size, total_len, len;
- struct scm_cookie scm;
- /* kernel mode address */
- char addr[MAX_SOCK_ADDR];
- /* user mode address pointers */
- struct sockaddr *uaddr;
- int *uaddr_len;
- err = -EFAULT;
- if (get_msghdr32(&msg_sys, msg))
- goto out;
- sock = sockfd_lookup(fd, &err);
- if (!sock)
- goto out;
- err = -EINVAL;
- if (msg_sys.msg_iovlen > UIO_MAXIOV)
- goto out_put;
- /* Check whether to allocate the iovec area*/
- err = -ENOMEM;
- iov_size = msg_sys.msg_iovlen * sizeof(struct iovec);
- if (msg_sys.msg_iovlen > UIO_FASTIOV) {
- iov = sock_kmalloc(sock->sk, iov_size, GFP_KERNEL);
- if (!iov)
- goto out_put;
- }
- /*
- * Save the user-mode address (verify_iovec will change the
- * kernel msghdr to use the kernel address space)
- */
- uaddr = msg_sys.msg_name;
- uaddr_len = &msg->msg_namelen;
- err = verify_iovec32(&msg_sys, iov, addr, VERIFY_WRITE);
- if (err < 0)
- goto out_freeiov;
- total_len=err;
- cmsg_ptr = (unsigned long)msg_sys.msg_control;
- msg_sys.msg_flags = 0;
- if (sock->file->f_flags & O_NONBLOCK)
- flags |= MSG_DONTWAIT;
- memset(&scm, 0, sizeof(scm));
- lock_kernel();
- {
- err = sock->ops->recvmsg(sock, &msg_sys, total_len, flags, &scm);
- if (err < 0)
- goto out_unlock_freeiov;
- len = err;
- if (!msg_sys.msg_control) {
- if (sock->passcred || scm.fp)
- msg_sys.msg_flags |= MSG_CTRUNC;
- if (scm.fp)
- __scm_destroy(&scm);
- } else {
- /*
- * If recvmsg processing itself placed some control messages into
- * user space, it's is using 64-bit CMSG processing, so we need to
- * fix it up before we tack on more stuff.
- */
- if ((unsigned long) msg_sys.msg_control != cmsg_ptr)
- cmsg32_recvmsg_fixup(&msg_sys, cmsg_ptr);
- /* Wheee... */
- if (sock->passcred)
- put_cmsg32(&msg_sys, SOL_SOCKET, SCM_CREDENTIALS,
- sizeof(scm.creds), &scm.creds);
- if (scm.fp != NULL)
- scm_detach_fds32(&msg_sys, &scm);
- }
- }
- unlock_kernel();
- if (uaddr != NULL) {
- err = move_addr_to_user(addr, msg_sys.msg_namelen, uaddr, uaddr_len);
- if (err < 0)
- goto out_freeiov;
- }
- err = __put_user(msg_sys.msg_flags, &msg->msg_flags);
- if (err)
- goto out_freeiov;
- err = __put_user((unsigned long)msg_sys.msg_control-cmsg_ptr,
- &msg->msg_controllen);
- if (err)
- goto out_freeiov;
- err = len;
- out_freeiov:
- if (iov != iovstack)
- sock_kfree_s(sock->sk, iov, iov_size);
- out_put:
- sockfd_put(sock);
- out:
- return err;
- out_unlock_freeiov:
- goto out_freeiov;
- }
- /* Argument list sizes for sys_socketcall */
- #define AL(x) ((x) * sizeof(u32))
- static const unsigned char nas[18]={AL(0),AL(3),AL(3),AL(3),AL(2),AL(3),
- AL(3),AL(3),AL(4),AL(4),AL(4),AL(6),
- AL(6),AL(2),AL(5),AL(5),AL(3),AL(3)};
- #undef AL
- extern asmlinkage long sys_bind(int fd, struct sockaddr *umyaddr, int addrlen);
- extern asmlinkage long sys_connect(int fd, struct sockaddr *uservaddr,
- int addrlen);
- extern asmlinkage long sys_accept(int fd, struct sockaddr *upeer_sockaddr,
- int *upeer_addrlen);
- extern asmlinkage long sys_getsockname(int fd, struct sockaddr *usockaddr,
- int *usockaddr_len);
- extern asmlinkage long sys_getpeername(int fd, struct sockaddr *usockaddr,
- int *usockaddr_len);
- extern asmlinkage long sys_send(int fd, void *buff, size_t len, unsigned flags);
- extern asmlinkage long sys_sendto(int fd, u32 buff, __kernel_size_t32 len,
- unsigned flags, u32 addr, int addr_len);
- extern asmlinkage long sys_recv(int fd, void *ubuf, size_t size, unsigned flags);
- extern asmlinkage long sys_recvfrom(int fd, u32 ubuf, __kernel_size_t32 size,
- unsigned flags, u32 addr, u32 addr_len);
- extern asmlinkage long sys_setsockopt(int fd, int level, int optname,
- char *optval, int optlen);
- extern asmlinkage long sys_getsockopt(int fd, int level, int optname,
- u32 optval, u32 optlen);
- extern asmlinkage long sys_socket(int family, int type, int protocol);
- extern asmlinkage long sys_socketpair(int family, int type, int protocol,
- int usockvec[2]);
- extern asmlinkage long sys_shutdown(int fd, int how);
- extern asmlinkage long sys_listen(int fd, int backlog);
- asmlinkage long
- sys32_socketcall (int call, u32 *args)
- {
- int ret;
- u32 a[6];
- u32 a0,a1;
- if (call<SYS_SOCKET||call>SYS_RECVMSG)
- return -EINVAL;
- if (copy_from_user(a, args, nas[call]))
- return -EFAULT;
- a0=a[0];
- a1=a[1];
- switch(call)
- {
- case SYS_SOCKET:
- ret = sys_socket(a0, a1, a[2]);
- break;
- case SYS_BIND:
- ret = sys_bind(a0, (struct sockaddr *)A(a1), a[2]);
- break;
- case SYS_CONNECT:
- ret = sys_connect(a0, (struct sockaddr *)A(a1), a[2]);
- break;
- case SYS_LISTEN:
- ret = sys_listen(a0, a1);
- break;
- case SYS_ACCEPT:
- ret = sys_accept(a0, (struct sockaddr *)A(a1), (int *)A(a[2]));
- break;
- case SYS_GETSOCKNAME:
- ret = sys_getsockname(a0, (struct sockaddr *)A(a1), (int *)A(a[2]));
- break;
- case SYS_GETPEERNAME:
- ret = sys_getpeername(a0, (struct sockaddr *)A(a1), (int *)A(a[2]));
- break;
- case SYS_SOCKETPAIR:
- ret = sys_socketpair(a0, a1, a[2], (int *)A(a[3]));
- break;
- case SYS_SEND:
- ret = sys_send(a0, (void *)A(a1), a[2], a[3]);
- break;
- case SYS_SENDTO:
- ret = sys_sendto(a0, a1, a[2], a[3], a[4], a[5]);
- break;
- case SYS_RECV:
- ret = sys_recv(a0, (void *)A(a1), a[2], a[3]);
- break;
- case SYS_RECVFROM:
- ret = sys_recvfrom(a0, a1, a[2], a[3], a[4], a[5]);
- break;
- case SYS_SHUTDOWN:
- ret = sys_shutdown(a0,a1);
- break;
- case SYS_SETSOCKOPT:
- ret = sys_setsockopt(a0, a1, a[2], (char *)A(a[3]),
- a[4]);
- break;
- case SYS_GETSOCKOPT:
- ret = sys_getsockopt(a0, a1, a[2], a[3], a[4]);
- break;
- case SYS_SENDMSG:
- ret = sys32_sendmsg(a0, (struct msghdr32 *) A(a1), a[2]);
- break;
- case SYS_RECVMSG:
- ret = sys32_recvmsg(a0, (struct msghdr32 *) A(a1), a[2]);
- break;
- default:
- ret = EINVAL;
- break;
- }
- return ret;
- }
- /*
- * sys32_ipc() is the de-multiplexer for the SysV IPC calls in 32bit emulation..
- *
- * This is really horribly ugly.
- */
- struct msgbuf32 { s32 mtype; char mtext[1]; };
- struct ipc_perm32 {
- key_t key;
- __kernel_uid_t32 uid;
- __kernel_gid_t32 gid;
- __kernel_uid_t32 cuid;
- __kernel_gid_t32 cgid;
- __kernel_mode_t32 mode;
- unsigned short seq;
- };
- struct ipc64_perm32 {
- key_t key;
- __kernel_uid32_t32 uid;
- __kernel_gid32_t32 gid;
- __kernel_uid32_t32 cuid;
- __kernel_gid32_t32 cgid;
- __kernel_mode_t32 mode;
- unsigned short __pad1;
- unsigned short seq;
- unsigned short __pad2;
- unsigned int unused1;
- unsigned int unused2;
- };
- struct semid_ds32 {
- struct ipc_perm32 sem_perm; /* permissions .. see ipc.h */
- __kernel_time_t32 sem_otime; /* last semop time */
- __kernel_time_t32 sem_ctime; /* last change time */
- u32 sem_base; /* ptr to first semaphore in array */
- u32 sem_pending; /* pending operations to be processed */
- u32 sem_pending_last; /* last pending operation */
- u32 undo; /* undo requests on this array */
- unsigned short sem_nsems; /* no. of semaphores in array */
- };
- struct semid64_ds32 {
- struct ipc64_perm32 sem_perm;
- __kernel_time_t32 sem_otime;
- unsigned int __unused1;
- __kernel_time_t32 sem_ctime;
- unsigned int __unused2;
- unsigned int sem_nsems;
- unsigned int __unused3;
- unsigned int __unused4;
- };
- struct msqid_ds32 {
- struct ipc_perm32 msg_perm;
- u32 msg_first;
- u32 msg_last;
- __kernel_time_t32 msg_stime;
- __kernel_time_t32 msg_rtime;
- __kernel_time_t32 msg_ctime;
- u32 wwait;
- u32 rwait;
- unsigned short msg_cbytes;
- unsigned short msg_qnum;
- unsigned short msg_qbytes;
- __kernel_ipc_pid_t32 msg_lspid;
- __kernel_ipc_pid_t32 msg_lrpid;
- };
- struct msqid64_ds32 {
- struct ipc64_perm32 msg_perm;
- __kernel_time_t32 msg_stime;
- unsigned int __unused1;
- __kernel_time_t32 msg_rtime;
- unsigned int __unused2;
- __kernel_time_t32 msg_ctime;
- unsigned int __unused3;
- unsigned int msg_cbytes;
- unsigned int msg_qnum;
- unsigned int msg_qbytes;
- __kernel_pid_t32 msg_lspid;
- __kernel_pid_t32 msg_lrpid;
- unsigned int __unused4;
- unsigned int __unused5;
- };
- struct shmid_ds32 {
- struct ipc_perm32 shm_perm;
- int shm_segsz;
- __kernel_time_t32 shm_atime;
- __kernel_time_t32 shm_dtime;
- __kernel_time_t32 shm_ctime;
- __kernel_ipc_pid_t32 shm_cpid;
- __kernel_ipc_pid_t32 shm_lpid;
- unsigned short shm_nattch;
- };
- struct shmid64_ds32 {
- struct ipc64_perm shm_perm;
- __kernel_size_t32 shm_segsz;
- __kernel_time_t32 shm_atime;
- unsigned int __unused1;
- __kernel_time_t32 shm_dtime;
- unsigned int __unused2;
- __kernel_time_t32 shm_ctime;
- unsigned int __unused3;
- __kernel_pid_t32 shm_cpid;
- __kernel_pid_t32 shm_lpid;
- unsigned int shm_nattch;
- unsigned int __unused4;
- unsigned int __unused5;
- };
- struct shminfo64_32 {
- unsigned int shmmax;
- unsigned int shmmin;
- unsigned int shmmni;
- unsigned int shmseg;
- unsigned int shmall;
- unsigned int __unused1;
- unsigned int __unused2;
- unsigned int __unused3;
- unsigned int __unused4;
- };
- struct shm_info32 {
- int used_ids;
- u32 shm_tot, shm_rss, shm_swp;
- u32 swap_attempts, swap_successes;
- };
- struct ipc_kludge {
- struct msgbuf *msgp;
- long msgtyp;
- };
- #define SEMOP 1
- #define SEMGET 2
- #define SEMCTL 3
- #define MSGSND 11
- #define MSGRCV 12
- #define MSGGET 13
- #define MSGCTL 14
- #define SHMAT 21
- #define SHMDT 22
- #define SHMGET 23
- #define SHMCTL 24
- #define IPCOP_MASK(__x) (1UL << (__x))
- static int
- ipc_parse_version32 (int *cmd)
- {
- if (*cmd & IPC_64) {
- *cmd ^= IPC_64;
- return IPC_64;
- } else {
- return IPC_OLD;
- }
- }
- static int
- semctl32 (int first, int second, int third, void *uptr)
- {
- union semun fourth;
- u32 pad;
- int err = 0, err2;
- struct semid64_ds s;
- mm_segment_t old_fs;
- int version = ipc_parse_version32(&third);
- if (!uptr)
- return -EINVAL;
- if (get_user(pad, (u32 *)uptr))
- return -EFAULT;
- if (third == SETVAL)
- fourth.val = (int)pad;
- else
- fourth.__pad = (void *)A(pad);
- switch (third) {
- case IPC_INFO:
- case IPC_RMID:
- case IPC_SET:
- case SEM_INFO:
- case GETVAL:
- case GETPID:
- case GETNCNT:
- case GETZCNT:
- case GETALL:
- case SETVAL:
- case SETALL:
- err = sys_semctl(first, second, third, fourth);
- break;
- case IPC_STAT:
- case SEM_STAT:
- fourth.__pad = &s;
- old_fs = get_fs();
- set_fs(KERNEL_DS);
- err = sys_semctl(first, second, third, fourth);
- set_fs(old_fs);
- if (version == IPC_64) {
- struct semid64_ds32 *usp64 = (struct semid64_ds32 *) A(pad);
- if (!access_ok(VERIFY_WRITE, usp64, sizeof(*usp64))) {
- err = -EFAULT;
- break;
- }
- err2 = __put_user(s.sem_perm.key, &usp64->sem_perm.key);
- err2 |= __put_user(s.sem_perm.uid, &usp64->sem_perm.uid);
- err2 |= __put_user(s.sem_perm.gid, &usp64->sem_perm.gid);
- err2 |= __put_user(s.sem_perm.cuid, &usp64->sem_perm.cuid);
- err2 |= __put_user(s.sem_perm.cgid, &usp64->sem_perm.cgid);
- err2 |= __put_user(s.sem_perm.mode, &usp64->sem_perm.mode);
- err2 |= __put_user(s.sem_perm.seq, &usp64->sem_perm.seq);
- err2 |= __put_user(s.sem_otime, &usp64->sem_otime);
- err2 |= __put_user(s.sem_ctime, &usp64->sem_ctime);
- err2 |= __put_user(s.sem_nsems, &usp64->sem_nsems);
- } else {
- struct semid_ds32 *usp32 = (struct semid_ds32 *) A(pad);
- if (!access_ok(VERIFY_WRITE, usp32, sizeof(*usp32))) {
- err = -EFAULT;
- break;
- }
- err2 = __put_user(s.sem_perm.key, &usp32->sem_perm.key);
- err2 |= __put_user(s.sem_perm.uid, &usp32->sem_perm.uid);
- err2 |= __put_user(s.sem_perm.gid, &usp32->sem_perm.gid);
- err2 |= __put_user(s.sem_perm.cuid, &usp32->sem_perm.cuid);
- err2 |= __put_user(s.sem_perm.cgid, &usp32->sem_perm.cgid);
- err2 |= __put_user(s.sem_perm.mode, &usp32->sem_perm.mode);
- err2 |= __put_user(s.sem_perm.seq, &usp32->sem_perm.seq);
- err2 |= __put_user(s.sem_otime, &usp32->sem_otime);
- err2 |= __put_user(s.sem_ctime, &usp32->sem_ctime);
- err2 |= __put_user(s.sem_nsems, &usp32->sem_nsems);
- }
- if (err2)
- err = -EFAULT;
- break;
- }
- return err;
- }
- static int
- do_sys32_msgsnd (int first, int second, int third, void *uptr)
- {
- struct msgbuf *p = kmalloc(second + sizeof(struct msgbuf) + 4, GFP_USER);
- struct msgbuf32 *up = (struct msgbuf32 *)uptr;
- mm_segment_t old_fs;
- int err;
- if (!p)
- return -ENOMEM;
- err = get_user(p->mtype, &up->mtype);
- err |= copy_from_user(p->mtext, &up->mtext, second);
- if (err)
- goto out;
- old_fs = get_fs();
- set_fs(KERNEL_DS);
- err = sys_msgsnd(first, p, second, third);
- set_fs(old_fs);
- out:
- kfree(p);
- return err;
- }
- static int
- do_sys32_msgrcv (int first, int second, int msgtyp, int third, int version, void *uptr)
- {
- struct msgbuf32 *up;
- struct msgbuf *p;
- mm_segment_t old_fs;
- int err;
- if (!version) {
- struct ipc_kludge *uipck = (struct ipc_kludge *)uptr;
- struct ipc_kludge ipck;
- err = -EINVAL;
- if (!uptr)
- goto out;
- err = -EFAULT;
- if (copy_from_user(&ipck, uipck, sizeof(struct ipc_kludge)))
- goto out;
- uptr = (void *)A(ipck.msgp);
- msgtyp = ipck.msgtyp;
- }
- err = -ENOMEM;
- p = kmalloc(second + sizeof(struct msgbuf) + 4, GFP_USER);
- if (!p)
- goto out;
- old_fs = get_fs();
- set_fs(KERNEL_DS);
- err = sys_msgrcv(first, p, second + 4, msgtyp, third);
- set_fs(old_fs);
- if (err < 0)
- goto free_then_out;
- up = (struct msgbuf32 *)uptr;
- if (put_user(p->mtype, &up->mtype) || copy_to_user(&up->mtext, p->mtext, err))
- err = -EFAULT;
- free_then_out:
- kfree(p);
- out:
- return err;
- }
- static int
- msgctl32 (int first, int second, void *uptr)
- {
- int err = -EINVAL, err2;
- struct msqid_ds m;
- struct msqid64_ds m64;
- struct msqid_ds32 *up32 = (struct msqid_ds32 *)uptr;
- struct msqid64_ds32 *up64 = (struct msqid64_ds32 *)uptr;
- mm_segment_t old_fs;
- int version = ipc_parse_version32(&second);
- switch (second) {
- case IPC_INFO:
- case IPC_RMID:
- case MSG_INFO:
- err = sys_msgctl(first, second, (struct msqid_ds *)uptr);
- break;
- case IPC_SET:
- if (version == IPC_64) {
- err = get_user(m.msg_perm.uid, &up64->msg_perm.uid);
- err |= get_user(m.msg_perm.gid, &up64->msg_perm.gid);
- err |= get_user(m.msg_perm.mode, &up64->msg_perm.mode);
- err |= get_user(m.msg_qbytes, &up64->msg_qbytes);
- } else {
- err = get_user(m.msg_perm.uid, &up32->msg_perm.uid);
- err |= get_user(m.msg_perm.gid, &up32->msg_perm.gid);
- err |= get_user(m.msg_perm.mode, &up32->msg_perm.mode);
- err |= get_user(m.msg_qbytes, &up32->msg_qbytes);
- }
- if (err)
- break;
- old_fs = get_fs();
- set_fs(KERNEL_DS);
- err = sys_msgctl(first, second, &m);
- set_fs(old_fs);
- break;
- case IPC_STAT:
- case MSG_STAT:
- old_fs = get_fs();
- set_fs(KERNEL_DS);
- err = sys_msgctl(first, second, (void *) &m64);
- set_fs(old_fs);
- if (version == IPC_64) {
- if (!access_ok(VERIFY_WRITE, up64, sizeof(*up64))) {
- err = -EFAULT;
- break;
- }
- err2 = __put_user(m64.msg_perm.key, &up64->msg_perm.key);
- err2 |= __put_user(m64.msg_perm.uid, &up64->msg_perm.uid);
- err2 |= __put_user(m64.msg_perm.gid, &up64->msg_perm.gid);
- err2 |= __put_user(m64.msg_perm.cuid, &up64->msg_perm.cuid);
- err2 |= __put_user(m64.msg_perm.cgid, &up64->msg_perm.cgid);
- err2 |= __put_user(m64.msg_perm.mode, &up64->msg_perm.mode);
- err2 |= __put_user(m64.msg_perm.seq, &up64->msg_perm.seq);
- err2 |= __put_user(m64.msg_stime, &up64->msg_stime);
- err2 |= __put_user(m64.msg_rtime, &up64->msg_rtime);
- err2 |= __put_user(m64.msg_ctime, &up64->msg_ctime);
- err2 |= __put_user(m64.msg_cbytes, &up64->msg_cbytes);
- err2 |= __put_user(m64.msg_qnum, &up64->msg_qnum);
- err2 |= __put_user(m64.msg_qbytes, &up64->msg_qbytes);
- err2 |= __put_user(m64.msg_lspid, &up64->msg_lspid);
- err2 |= __put_user(m64.msg_lrpid, &up64->msg_lrpid);
- if (err2)
- err = -EFAULT;
- } else {
- if (!access_ok(VERIFY_WRITE, up32, sizeof(*up32))) {
- err = -EFAULT;
- break;
- }
- err2 = __put_user(m64.msg_perm.key, &up32->msg_perm.key);
- err2 |= __put_user(m64.msg_perm.uid, &up32->msg_perm.uid);
- err2 |= __put_user(m64.msg_perm.gid, &up32->msg_perm.gid);
- err2 |= __put_user(m64.msg_perm.cuid, &up32->msg_perm.cuid);
- err2 |= __put_user(m64.msg_perm.cgid, &up32->msg_perm.cgid);
- err2 |= __put_user(m64.msg_perm.mode, &up32->msg_perm.mode);
- err2 |= __put_user(m64.msg_perm.seq, &up32->msg_perm.seq);
- err2 |= __put_user(m64.msg_stime, &up32->msg_stime);
- err2 |= __put_user(m64.msg_rtime, &up32->msg_rtime);
- err2 |= __put_user(m64.msg_ctime, &up32->msg_ctime);
- err2 |= __put_user(m64.msg_cbytes, &up32->msg_cbytes);
- err2 |= __put_user(m64.msg_qnum, &up32->msg_qnum);
- err2 |= __put_user(m64.msg_qbytes, &up32->msg_qbytes);
- err2 |= __put_user(m64.msg_lspid, &up32->msg_lspid);
- err2 |= __put_user(m64.msg_lrpid, &up32->msg_lrpid);
- if (err2)
- err = -EFAULT;
- }
- break;
- }
- return err;
- }
- static int
- shmat32 (int first, int second, int third, int version, void *uptr)
- {
- unsigned long raddr;
- u32 *uaddr = (u32 *)A((u32)third);
- int err;
- if (version == 1)
- return -EINVAL; /* iBCS2 emulator entry point: unsupported */
- err = sys_shmat(first, uptr, second, &raddr);
- if (err)
- return err;
- return put_user(raddr, uaddr);
- }
- static int
- shmctl32 (int first, int second, void *uptr)
- {
- int err = -EFAULT, err2;
- struct shmid_ds s;
- struct shmid64_ds s64;
- struct shmid_ds32 *up32 = (struct shmid_ds32 *)uptr;
- struct shmid64_ds32 *up64 = (struct shmid64_ds32 *)uptr;
- mm_segment_t old_fs;
- struct shm_info32 *uip = (struct shm_info32 *)uptr;
- struct shm_info si;
- int version = ipc_parse_version32(&second);
- struct shminfo64 smi;
- struct shminfo *usi32 = (struct shminfo *) uptr;
- struct shminfo64_32 *usi64 = (struct shminfo64_32 *) uptr;
- switch (second) {
- case IPC_INFO:
- old_fs = get_fs();
- set_fs(KERNEL_DS);
- err = sys_shmctl(first, second, (struct shmid_ds *)&smi);
- set_fs(old_fs);
- if (version == IPC_64) {
- if (!access_ok(VERIFY_WRITE, usi64, sizeof(*usi64))) {
- err = -EFAULT;
- break;
- }
- err2 = __put_user(smi.shmmax, &usi64->shmmax);
- err2 |= __put_user(smi.shmmin, &usi64->shmmin);
- err2 |= __put_user(smi.shmmni, &usi64->shmmni);
- err2 |= __put_user(smi.shmseg, &usi64->shmseg);
- err2 |= __put_user(smi.shmall, &usi64->shmall);
- } else {
- if (!access_ok(VERIFY_WRITE, usi32, sizeof(*usi32))) {
- err = -EFAULT;
- break;
- }
- err2 = __put_user(smi.shmmax, &usi32->shmmax);
- err2 |= __put_user(smi.shmmin, &usi32->shmmin);
- err2 |= __put_user(smi.shmmni, &usi32->shmmni);
- err2 |= __put_user(smi.shmseg, &usi32->shmseg);
- err2 |= __put_user(smi.shmall, &usi32->shmall);
- }
- if (err2)
- err = -EFAULT;
- break;
- case IPC_RMID:
- case SHM_LOCK:
- case SHM_UNLOCK:
- err = sys_shmctl(first, second, (struct shmid_ds *)uptr);
- break;
- case IPC_SET:
- if (version == IPC_64) {
- err = get_user(s.shm_perm.uid, &up64->shm_perm.uid);
- err |= get_user(s.shm_perm.gid, &up64->shm_perm.gid);
- err |= get_user(s.shm_perm.mode, &up64->shm_perm.mode);
- } else {
- err = get_user(s.shm_perm.uid, &up32->shm_perm.uid);
- err |= get_user(s.shm_perm.gid, &up32->shm_perm.gid);
- err |= get_user(s.shm_perm.mode, &up32->shm_perm.mode);
- }
- if (err)
- break;
- old_fs = get_fs();
- set_fs(KERNEL_DS);
- err = sys_shmctl(first, second, &s);
- set_fs(old_fs);
- break;
- case IPC_STAT:
- case SHM_STAT:
- old_fs = get_fs();
- set_fs(KERNEL_DS);
- err = sys_shmctl(first, second, (void *) &s64);
- set_fs(old_fs);
- if (err < 0)
- break;
- if (version == IPC_64) {
- if (!access_ok(VERIFY_WRITE, up64, sizeof(*up64))) {
- err = -EFAULT;
- break;
- }
- err2 = __put_user(s64.shm_perm.key, &up64->shm_perm.key);
- err2 |= __put_user(s64.shm_perm.uid, &up64->shm_perm.uid);
- err2 |= __put_user(s64.shm_perm.gid, &up64->shm_perm.gid);
- err2 |= __put_user(s64.shm_perm.cuid, &up64->shm_perm.cuid);
- err2 |= __put_user(s64.shm_perm.cgid, &up64->shm_perm.cgid);
- err2 |= __put_user(s64.shm_perm.mode, &up64->shm_perm.mode);
- err2 |= __put_user(s64.shm_perm.seq, &up64->shm_perm.seq);
- err2 |= __put_user(s64.shm_atime, &up64->shm_atime);
- err2 |= __put_user(s64.shm_dtime, &up64->shm_dtime);
- err2 |= __put_user(s64.shm_ctime, &up64->shm_ctime);
- err2 |= __put_user(s64.shm_segsz, &up64->shm_segsz);
- err2 |= __put_user(s64.shm_nattch, &up64->shm_nattch);
- err2 |= __put_user(s64.shm_cpid, &up64->shm_cpid);
- err2 |= __put_user(s64.shm_lpid, &up64->shm_lpid);
- } else {
- if (!access_ok(VERIFY_WRITE, up32, sizeof(*up32))) {
- err = -EFAULT;
- break;
- }
- err2 = __put_user(s64.shm_perm.key, &up32->shm_perm.key);
- err2 |= __put_user(s64.shm_perm.uid, &up32->shm_perm.uid);
- err2 |= __put_user(s64.shm_perm.gid, &up32->shm_perm.gid);
- err2 |= __put_user(s64.shm_perm.cuid, &up32->shm_perm.cuid);
- err2 |= __put_user(s64.shm_perm.cgid, &up32->shm_perm.cgid);
- err2 |= __put_user(s64.shm_perm.mode, &up32->shm_perm.mode);
- err2 |= __put_user(s64.shm_perm.seq, &up32->shm_perm.seq);
- err2 |= __put_user(s64.shm_atime, &up32->shm_atime);
- err2 |= __put_user(s64.shm_dtime, &up32->shm_dtime);
- err2 |= __put_user(s64.shm_ctime, &up32->shm_ctime);
- err2 |= __put_user(s64.shm_segsz, &up32->shm_segsz);
- err2 |= __put_user(s64.shm_nattch, &up32->shm_nattch);
- err2 |= __put_user(s64.shm_cpid, &up32->shm_cpid);
- err2 |= __put_user(s64.shm_lpid, &up32->shm_lpid);
- }
- if (err2)
- err = -EFAULT;
- break;
- case SHM_INFO:
- old_fs = get_fs();
- set_fs(KERNEL_DS);
- err = sys_shmctl(first, second, (void *)&si);
- set_fs(old_fs);
- if (err < 0)
- break;
- if (!access_ok(VERIFY_WRITE, uip, sizeof(*uip))) {
- err = -EFAULT;
- break;
- }
- err2 = __put_user(si.used_ids, &uip->used_ids);
- err2 |= __put_user(si.shm_tot, &uip->shm_tot);
- err2 |= __put_user(si.shm_rss, &uip->shm_rss);
- err2 |= __put_user(si.shm_swp, &uip->shm_swp);
- err2 |= __put_user(si.swap_attempts, &uip->swap_attempts);
- err2 |= __put_user(si.swap_successes, &uip->swap_successes);
- if (err2)
- err = -EFAULT;
- break;
- }
- return err;
- }
- asmlinkage long
- sys32_ipc (u32 call, int first, int second, int third, u32 ptr, u32 fifth)
- {
- int version;
- version = call >> 16; /* hack for backward compatibility */
- call &= 0xffff;
- switch (call) {
- case SEMOP:
- /* struct sembuf is the same on 32 and 64bit :)) */
- return sys_semop(first, (struct sembuf *)AA(ptr), second);
- case SEMGET:
- return sys_semget(first, second, third);
- case SEMCTL:
- return semctl32(first, second, third, (void *)AA(ptr));
- case MSGSND:
- return do_sys32_msgsnd(first, second, third, (void *)AA(ptr));
- case MSGRCV:
- return do_sys32_msgrcv(first, second, fifth, third, version, (void *)AA(ptr));
- case MSGGET:
- return sys_msgget((key_t) first, second);
- case MSGCTL:
- return msgctl32(first, second, (void *)AA(ptr));
- case SHMAT:
- return shmat32(first, second, third, version, (void *)AA(ptr));
- break;
- case SHMDT:
- return sys_shmdt((char *)AA(ptr));
- case SHMGET:
- return sys_shmget(first, second, third);
- case SHMCTL:
- return shmctl32(first, second, (void *)AA(ptr));
- default:
- return -EINVAL;
- }
- }
- /*
- * sys_time() can be implemented in user-level using
- * sys_gettimeofday(). IA64 did this but i386 Linux did not
- * so we have to implement this system call here.
- */
- asmlinkage long
- sys32_time (int *tloc)
- {
- int i;
- /* SMP: This is fairly trivial. We grab CURRENT_TIME and
- stuff it to user space. No side effects */
- i = CURRENT_TIME;
- if (tloc) {
- if (put_user(i, tloc))
- i = -EFAULT;
- }
- return i;
- }
- struct rusage32 {
- struct timeval32 ru_utime;
- struct timeval32 ru_stime;
- int ru_maxrss;
- int ru_ixrss;
- int ru_idrss;
- int ru_isrss;
- int ru_minflt;
- int ru_majflt;
- int ru_nswap;
- int ru_inblock;
- int ru_oublock;
- int ru_msgsnd;
- int ru_msgrcv;
- int ru_nsignals;
- int ru_nvcsw;
- int ru_nivcsw;
- };
- static int
- put_rusage (struct rusage32 *ru, struct rusage *r)
- {
- int err;
- if (!access_ok(VERIFY_WRITE, ru, sizeof(*ru)))
- return -EFAULT;
- err = __put_user (r->ru_utime.tv_sec, &ru->ru_utime.tv_sec);
- err |= __put_user (r->ru_utime.tv_usec, &ru->ru_utime.tv_usec);
- err |= __put_user (r->ru_stime.tv_sec, &ru->ru_stime.tv_sec);
- err |= __put_user (r->ru_stime.tv_usec, &ru->ru_stime.tv_usec);
- err |= __put_user (r->ru_maxrss, &ru->ru_maxrss);
- err |= __put_user (r->ru_ixrss, &ru->ru_ixrss);
- err |= __put_user (r->ru_idrss, &ru->ru_idrss);
- err |= __put_user (r->ru_isrss, &ru->ru_isrss);
- err |= __put_user (r->ru_minflt, &ru->ru_minflt);
- err |= __put_user (r->ru_majflt, &ru->ru_majflt);
- err |= __put_user (r->ru_nswap, &ru->ru_nswap);
- err |= __put_user (r->ru_inblock, &ru->ru_inblock);
- err |= __put_user (r->ru_oublock, &ru->ru_oublock);
- err |= __put_user (r->ru_msgsnd, &ru->ru_msgsnd);
- err |= __put_user (r->ru_msgrcv, &ru->ru_msgrcv);
- err |= __put_user (r->ru_nsignals, &ru->ru_nsignals);
- err |= __put_user (r->ru_nvcsw, &ru->ru_nvcsw);
- err |= __put_user (r->ru_nivcsw, &ru->ru_nivcsw);
- return err;
- }
- asmlinkage long
- sys32_wait4 (int pid, unsigned int *stat_addr, int options, struct rusage32 *ru)
- {
- if (!ru)
- return sys_wait4(pid, stat_addr, options, NULL);
- else {
- struct rusage r;
- int ret;
- unsigned int status;
- mm_segment_t old_fs = get_fs();
- set_fs(KERNEL_DS);
- ret = sys_wait4(pid, stat_addr ? &status : NULL, options, &r);
- set_fs(old_fs);
- if (put_rusage(ru, &r))
- return -EFAULT;
- if (stat_addr && put_user(status, stat_addr))
- return -EFAULT;
- return ret;
- }
- }
- asmlinkage long
- sys32_waitpid (int pid, unsigned int *stat_addr, int options)
- {
- return sys32_wait4(pid, stat_addr, options, NULL);
- }
- extern asmlinkage long sys_getrusage (int who, struct rusage *ru);
- asmlinkage long
- sys32_getrusage (int who, struct rusage32 *ru)
- {
- struct rusage r;
- int ret;
- mm_segment_t old_fs = get_fs();
- set_fs(KERNEL_DS);
- ret = sys_getrusage(who, &r);
- set_fs(old_fs);
- if (put_rusage (ru, &r))
- return -EFAULT;
- return ret;
- }
- struct tms32 {
- __kernel_clock_t32 tms_utime;
- __kernel_clock_t32 tms_stime;
- __kernel_clock_t32 tms_cutime;
- __kernel_clock_t32 tms_cstime;
- };
- extern asmlinkage long sys_times (struct tms * tbuf);
- asmlinkage long
- sys32_times (struct tms32 *tbuf)
- {
- mm_segment_t old_fs = get_fs();
- struct tms t;
- long ret;
- int err;
- set_fs(KERNEL_DS);
- ret = sys_times(tbuf ? &t : NULL);
- set_fs(old_fs);
- if (tbuf) {
- err = put_user (IA32_TICK(t.tms_utime), &tbuf->tms_utime);
- err |= put_user (IA32_TICK(t.tms_stime), &tbuf->tms_stime);
- err |= put_user (IA32_TICK(t.tms_cutime), &tbuf->tms_cutime);
- err |= put_user (IA32_TICK(t.tms_cstime), &tbuf->tms_cstime);
- if (err)
- ret = -EFAULT;
- }
- return IA32_TICK(ret);
- }
- static unsigned int
- ia32_peek (struct pt_regs *regs, struct task_struct *child, unsigned long addr, unsigned int *val)
- {
- size_t copied;
- unsigned int ret;
- copied = access_process_vm(child, addr, val, sizeof(*val), 0);
- return (copied != sizeof(ret)) ? -EIO : 0;
- }
- static unsigned int
- ia32_poke (struct pt_regs *regs, struct task_struct *child, unsigned long addr, unsigned int val)
- {
- if (access_process_vm(child, addr, &val, sizeof(val), 1) != sizeof(val))
- return -EIO;
- return 0;
- }
- /*
- * The order in which registers are stored in the ptrace regs structure
- */
- #define PT_EBX 0
- #define PT_ECX 1
- #define PT_EDX 2
- #define PT_ESI 3
- #define PT_EDI 4
- #define PT_EBP 5
- #define PT_EAX 6
- #define PT_DS 7
- #define PT_ES 8
- #define PT_FS 9
- #define PT_GS 10
- #define PT_ORIG_EAX 11
- #define PT_EIP 12
- #define PT_CS 13
- #define PT_EFL 14
- #define PT_UESP 15
- #define PT_SS 16
- static unsigned int
- getreg (struct task_struct *child, int regno)
- {
- struct pt_regs *child_regs;
- child_regs = ia64_task_regs(child);
- switch (regno / sizeof(int)) {
- case PT_EBX: return child_regs->r11;
- case PT_ECX: return child_regs->r9;
- case PT_EDX: return child_regs->r10;
- case PT_ESI: return child_regs->r14;
- case PT_EDI: return child_regs->r15;
- case PT_EBP: return child_regs->r13;
- case PT_EAX: return child_regs->r8;
- case PT_ORIG_EAX: return child_regs->r1; /* see dispatch_to_ia32_handler() */
- case PT_EIP: return child_regs->cr_iip;
- case PT_UESP: return child_regs->r12;
- case PT_EFL: return child->thread.eflag;
- case PT_DS: case PT_ES: case PT_FS: case PT_GS: case PT_SS:
- return __USER_DS;
- case PT_CS: return __USER_CS;
- default:
- printk(KERN_ERR "ia32.getreg(): unknown register %dn", regno);
- break;
- }
- return 0;
- }
- static void
- putreg (struct task_struct *child, int regno, unsigned int value)
- {
- struct pt_regs *child_regs;
- child_regs = ia64_task_regs(child);
- switch (regno / sizeof(int)) {
- case PT_EBX: child_regs->r11 = value; break;
- case PT_ECX: child_regs->r9 = value; break;
- case PT_EDX: child_regs->r10 = value; break;
- case PT_ESI: child_regs->r14 = value; break;
- case PT_EDI: child_regs->r15 = value; break;
- case PT_EBP: child_regs->r13 = value; break;
- case PT_EAX: child_regs->r8 = value; break;
- case PT_ORIG_EAX: child_regs->r1 = value; break;
- case PT_EIP: child_regs->cr_iip = value; break;
- case PT_UESP: child_regs->r12 = value; break;
- case PT_EFL: child->thread.eflag = value; break;
- case PT_DS: case PT_ES: case PT_FS: case PT_GS: case PT_SS:
- if (value != __USER_DS)
- printk(KERN_ERR
- "ia32.putreg: attempt to set invalid segment register %d = %xn",
- regno, value);
- break;
- case PT_CS:
- if (value != __USER_CS)
- printk(KERN_ERR
- "ia32.putreg: attempt to to set invalid segment register %d = %xn",
- regno, value);
- break;
- default:
- printk(KERN_ERR "ia32.putreg: unknown register %dn", regno);
- break;
- }
- }
- static inline void
- ia32f2ia64f (void *dst, void *src)
- {
- asm volatile ("ldfe f6=[%1];; stf.spill [%0]=f6" :: "r"(dst), "r"(src) : "memory");
- return;
- }
- static inline void
- ia64f2ia32f (void *dst, void *src)
- {
- asm volatile ("ldf.fill f6=[%1];; stfe [%0]=f6" :: "r"(dst), "r"(src) : "memory");
- return;
- }
- static void
- put_fpreg (int regno, struct _fpreg_ia32 *reg, struct pt_regs *ptp, struct switch_stack *swp,
- int tos)
- {
- struct _fpreg_ia32 *f;
- char buf[32];
- f = (struct _fpreg_ia32 *)(((unsigned long)buf + 15) & ~15);
- if ((regno += tos) >= 8)
- regno -= 8;
- switch (regno) {
- case 0:
- ia64f2ia32f(f, &ptp->f8);
- break;
- case 1:
- ia64f2ia32f(f, &ptp->f9);
- break;
- case 2:
- case 3:
- case 4:
- case 5:
- case 6:
- case 7:
- ia64f2ia32f(f, &swp->f10 + (regno - 2));
- break;
- }
- copy_to_user(reg, f, sizeof(*reg));
- }
- static void
- get_fpreg (int regno, struct _fpreg_ia32 *reg, struct pt_regs *ptp, struct switch_stack *swp,
- int tos)
- {
- if ((regno += tos) >= 8)
- regno -= 8;
- switch (regno) {
- case 0:
- copy_from_user(&ptp->f8, reg, sizeof(*reg));
- break;
- case 1:
- copy_from_user(&ptp->f9, reg, sizeof(*reg));
- break;
- case 2:
- case 3:
- case 4:
- case 5:
- case 6:
- case 7:
- copy_from_user(&swp->f10 + (regno - 2), reg, sizeof(*reg));
- break;
- }
- return;
- }
- static int
- save_ia32_fpstate (struct task_struct *tsk, struct _fpstate_ia32 *save)
- {
- struct switch_stack *swp;
- struct pt_regs *ptp;
- int i, tos;
- if (!access_ok(VERIFY_WRITE, save, sizeof(*save)))
- return -EIO;
- __put_user(tsk->thread.fcr, &save->cw);
- __put_user(tsk->thread.fsr, &save->sw);
- __put_user(tsk->thread.fsr >> 32, &save->tag);
- __put_user(tsk->thread.fir, &save->ipoff);
- __put_user(__USER_CS, &save->cssel);
- __put_user(tsk->thread.fdr, &save->dataoff);
- __put_user(__USER_DS, &save->datasel);
- /*
- * Stack frames start with 16-bytes of temp space
- */
- swp = (struct switch_stack *)(tsk->thread.ksp + 16);
- ptp = ia64_task_regs(tsk);
- tos = (tsk->thread.fsr >> 11) & 3;
- for (i = 0; i < 8; i++)
- put_fpreg(i, &save->_st[i], ptp, swp, tos);
- return 0;
- }
- static int
- restore_ia32_fpstate (struct task_struct *tsk, struct _fpstate_ia32 *save)
- {
- struct switch_stack *swp;
- struct pt_regs *ptp;
- int i, tos, ret;
- int fsrlo, fsrhi;
- if (!access_ok(VERIFY_READ, save, sizeof(*save)))
- return(-EIO);
- ret = __get_user(tsk->thread.fcr, (unsigned int *)&save->cw);
- ret |= __get_user(fsrlo, (unsigned int *)&save->sw);
- ret |= __get_user(fsrhi, (unsigned int *)&save->tag);
- tsk->thread.fsr = ((long)fsrhi << 32) | (long)fsrlo;
- ret |= __get_user(tsk->thread.fir, (unsigned int *)&save->ipoff);
- ret |= __get_user(tsk->thread.fdr, (unsigned int *)&save->dataoff);
- /*
- * Stack frames start with 16-bytes of temp space
- */
- swp = (struct switch_stack *)(tsk->thread.ksp + 16);
- ptp = ia64_task_regs(tsk);
- tos = (tsk->thread.fsr >> 11) & 3;
- for (i = 0; i < 8; i++)
- get_fpreg(i, &save->_st[i], ptp, swp, tos);
- return ret ? -EFAULT : 0;
- }
- extern asmlinkage long sys_ptrace (long, pid_t, unsigned long, unsigned long, long, long, long,
- long, long);
- /*
- * Note that the IA32 version of `ptrace' calls the IA64 routine for
- * many of the requests. This will only work for requests that do
- * not need access to the calling processes `pt_regs' which is located
- * at the address of `stack'. Once we call the IA64 `sys_ptrace' then
- * the address of `stack' will not be the address of the `pt_regs'.
- */
- asmlinkage long
- sys32_ptrace (int request, pid_t pid, unsigned int addr, unsigned int data,
- long arg4, long arg5, long arg6, long arg7, long stack)
- {
- struct pt_regs *regs = (struct pt_regs *) &stack;
- struct task_struct *child;
- unsigned int value, tmp;
- long i, ret;
- lock_kernel();
- if (request == PTRACE_TRACEME) {
- ret = sys_ptrace(request, pid, addr, data, arg4, arg5, arg6, arg7, stack);
- goto out;
- }
- ret = -ESRCH;
- read_lock(&tasklist_lock);
- child = find_task_by_pid(pid);
- read_unlock(&tasklist_lock);
- if (!child)
- goto out;
- ret = -EPERM;
- if (pid == 1) /* no messing around with init! */
- goto out;
- if (request == PTRACE_ATTACH) {
- ret = sys_ptrace(request, pid, addr, data, arg4, arg5, arg6, arg7, stack);
- goto out;
- }
- ret = -ESRCH;
- if (!(child->ptrace & PT_PTRACED))
- goto out;
- if (child->state != TASK_STOPPED) {
- if (request != PTRACE_KILL)
- goto out;
- }
- if (child->p_pptr != current)
- goto out;
- switch (request) {
- case PTRACE_PEEKTEXT:
- case PTRACE_PEEKDATA: /* read word at location addr */
- ret = ia32_peek(regs, child, addr, &value);
- if (ret == 0)
- ret = put_user(value, (unsigned int *) A(data));
- else
- ret = -EIO;
- goto out;
- case PTRACE_POKETEXT:
- case PTRACE_POKEDATA: /* write the word at location addr */
- ret = ia32_poke(regs, child, addr, data);
- goto out;
- case PTRACE_PEEKUSR: /* read word at addr in USER area */
- ret = -EIO;
- if ((addr & 3) || addr > 17*sizeof(int))
- break;
- tmp = getreg(child, addr);
- if (!put_user(tmp, (unsigned int *) A(data)))
- ret = 0;
- break;
- case PTRACE_POKEUSR: /* write word at addr in USER area */
- ret = -EIO;
- if ((addr & 3) || addr > 17*sizeof(int))
- break;
- putreg(child, addr, data);
- ret = 0;
- break;
- case IA32_PTRACE_GETREGS:
- if (!access_ok(VERIFY_WRITE, (int *) A(data), 17*sizeof(int))) {
- ret = -EIO;
- break;
- }
- for (i = 0; i < 17*sizeof(int); i += sizeof(int) ) {
- put_user(getreg(child, i), (unsigned int *) A(data));
- data += sizeof(int);
- }
- ret = 0;
- break;
- case IA32_PTRACE_SETREGS:
- if (!access_ok(VERIFY_READ, (int *) A(data), 17*sizeof(int))) {
- ret = -EIO;
- break;
- }
- for (i = 0; i < 17*sizeof(int); i += sizeof(int) ) {
- get_user(tmp, (unsigned int *) A(data));
- putreg(child, i, tmp);
- data += sizeof(int);
- }
- ret = 0;
- break;
- case IA32_PTRACE_GETFPREGS:
- ret = save_ia32_fpstate(child, (struct _fpstate_ia32 *) A(data));
- break;
- case IA32_PTRACE_SETFPREGS:
- ret = restore_ia32_fpstate(child, (struct _fpstate_ia32 *) A(data));
- break;
- case PTRACE_SYSCALL: /* continue, stop after next syscall */
- case PTRACE_CONT: /* restart after signal. */
- case PTRACE_KILL:
- case PTRACE_SINGLESTEP: /* execute chile for one instruction */
- case PTRACE_DETACH: /* detach a process */
- ret = sys_ptrace(request, pid, addr, data, arg4, arg5, arg6, arg7, stack);
- break;
- default:
- ret = -EIO;
- break;
- }
- out:
- unlock_kernel();
- return ret;
- }
- static inline int
- get_flock32(struct flock *kfl, struct flock32 *ufl)
- {
- int err;
- if (!access_ok(VERIFY_READ, ufl, sizeof(*ufl)))
- return -EFAULT;
- err = __get_user(kfl->l_type, &ufl->l_type);
- err |= __get_user(kfl->l_whence, &ufl->l_whence);
- err |= __get_user(kfl->l_start, &ufl->l_start);
- err |= __get_user(kfl->l_len, &ufl->l_len);
- err |= __get_user(kfl->l_pid, &ufl->l_pid);
- return err;
- }
- static inline int
- put_flock32(struct flock *kfl, struct flock32 *ufl)
- {
- int err;
- if (!access_ok(VERIFY_WRITE, ufl, sizeof(*ufl)))
- return -EFAULT;
- err = __put_user(kfl->l_type, &ufl->l_type);
- err |= __put_user(kfl->l_whence, &ufl->l_whence);
- err |= __put_user(kfl->l_start, &ufl->l_start);
- err |= __put_user(kfl->l_len, &ufl->l_len);
- err |= __put_user(kfl->l_pid, &ufl->l_pid);
- return err;
- }
- extern asmlinkage long sys_fcntl (unsigned int fd, unsigned int cmd, unsigned long arg);
- asmlinkage long
- sys32_fcntl (unsigned int fd, unsigned int cmd, unsigned int arg)
- {
- mm_segment_t old_fs;
- struct flock f;
- long ret;
- switch (cmd) {
- case F_GETLK:
- case F_SETLK:
- case F_SETLKW:
- if (get_flock32(&f, (struct flock32 *) A(arg)))
- return -EFAULT;
- old_fs = get_fs();
- set_fs(KERNEL_DS);
- ret = sys_fcntl(fd, cmd, (unsigned long) &f);
- set_fs(old_fs);
- if (cmd == F_GETLK && put_flock32(&f, (struct flock32 *) A(arg)))
- return -EFAULT;
- return ret;
- default:
- /*
- * `sys_fcntl' lies about arg, for the F_SETOWN
- * sub-function arg can have a negative value.
- */
- return sys_fcntl(fd, cmd, arg);
- }
- }
- asmlinkage long sys_ni_syscall(void);
- asmlinkage long
- sys32_ni_syscall (int dummy0, int dummy1, int dummy2, int dummy3, int dummy4, int dummy5,
- int dummy6, int dummy7, int stack)
- {
- struct pt_regs *regs = (struct pt_regs *)&stack;
- printk(KERN_WARNING "IA32 syscall #%d issued, maybe we should implement itn",
- (int)regs->r1);
- return(sys_ni_syscall());
- }
- /*
- * The IA64 maps 4 I/O ports for each 4K page
- */
- #define IOLEN ((65536 / 4) * 4096)
- asmlinkage long
- sys32_iopl (int level)
- {
- extern unsigned long ia64_iobase;
- int fd;
- struct file * file;
- unsigned int old;
- unsigned long addr;
- mm_segment_t old_fs = get_fs ();
- if (level != 3)
- return(-EINVAL);
- /* Trying to gain more privileges? */
- asm volatile ("mov %0=ar.eflag ;;" : "=r"(old));
- if (level > ((old >> 12) & 3)) {
- if (!capable(CAP_SYS_RAWIO))
- return -EPERM;
- }
- set_fs(KERNEL_DS);
- fd = sys_open("/dev/mem", O_SYNC | O_RDWR, 0);
- set_fs(old_fs);
- if (fd < 0)
- return fd;
- file = fget(fd);
- if (file == NULL) {
- sys_close(fd);
- return(-EFAULT);
- }
- down_write(¤t->mm->mmap_sem);
- addr = do_mmap_pgoff(file, IA32_IOBASE,
- IOLEN, PROT_READ|PROT_WRITE, MAP_SHARED,
- (ia64_iobase & ~PAGE_OFFSET) >> PAGE_SHIFT);
- up_write(¤t->mm->mmap_sem);
- if (addr >= 0) {
- old = (old & ~0x3000) | (level << 12);
- asm volatile ("mov ar.eflag=%0;;" :: "r"(old));
- }
- fput(file);
- sys_close(fd);
- return 0;
- }
- asmlinkage long
- sys32_ioperm (unsigned int from, unsigned int num, int on)
- {
- /*
- * Since IA64 doesn't have permission bits we'd have to go to
- * a lot of trouble to simulate them in software. There's
- * no point, only trusted programs can make this call so we'll
- * just turn it into an iopl call and let the process have
- * access to all I/O ports.
- *
- * XXX proper ioperm() support should be emulated by
- * manipulating the page protections...
- */
- return sys32_iopl(3);
- }
- typedef struct {
- unsigned int ss_sp;
- unsigned int ss_flags;
- unsigned int ss_size;
- } ia32_stack_t;
- asmlinkage long
- sys32_sigaltstack (ia32_stack_t *uss32, ia32_stack_t *uoss32,
- long arg2, long arg3, long arg4, long arg5, long arg6, long arg7, long stack)
- {
- struct pt_regs *pt = (struct pt_regs *) &stack;
- stack_t uss, uoss;
- ia32_stack_t buf32;
- int ret;
- mm_segment_t old_fs = get_fs();
- if (uss32)
- if (copy_from_user(&buf32, uss32, sizeof(ia32_stack_t)))
- return -EFAULT;
- uss.ss_sp = (void *) (long) buf32.ss_sp;
- uss.ss_flags = buf32.ss_flags;
- uss.ss_size = buf32.ss_size;
- set_fs(KERNEL_DS);
- ret = do_sigaltstack(uss32 ? &uss : NULL, &uoss, pt->r12);
- set_fs(old_fs);
- if (ret < 0)
- return(ret);
- if (uoss32) {
- buf32.ss_sp = (long) uoss.ss_sp;
- buf32.ss_flags = uoss.ss_flags;
- buf32.ss_size = uoss.ss_size;
- if (copy_to_user(uoss32, &buf32, sizeof(ia32_stack_t)))
- return -EFAULT;
- }
- return ret;
- }
- asmlinkage int
- sys32_pause (void)
- {
- current->state = TASK_INTERRUPTIBLE;
- schedule();
- return -ERESTARTNOHAND;
- }
- asmlinkage long sys_msync (unsigned long start, size_t len, int flags);
- asmlinkage int
- sys32_msync (unsigned int start, unsigned int len, int flags)
- {
- unsigned int addr;
- if (OFFSET4K(start))
- return -EINVAL;
- addr = PAGE_START(start);
- return sys_msync(addr, len + (start - addr), flags);
- }
- struct sysctl32 {
- unsigned int name;
- int nlen;
- unsigned int oldval;
- unsigned int oldlenp;
- unsigned int newval;
- unsigned int newlen;
- unsigned int __unused[4];
- };
- extern asmlinkage long sys_sysctl(struct __sysctl_args *args);
- asmlinkage long
- sys32_sysctl (struct sysctl32 *args)
- {
- struct sysctl32 a32;
- mm_segment_t old_fs = get_fs ();
- void *oldvalp, *newvalp;
- size_t oldlen;
- int *namep;
- long ret;
- if (copy_from_user(&a32, args, sizeof(a32)))
- return -EFAULT;
- /*
- * We need to pre-validate these because we have to disable address checking
- * before calling do_sysctl() because of OLDLEN but we can't run the risk of the
- * user specifying bad addresses here. Well, since we're dealing with 32 bit
- * addresses, we KNOW that access_ok() will always succeed, so this is an
- * expensive NOP, but so what...
- */
- namep = (int *) A(a32.name);
- oldvalp = (void *) A(a32.oldval);
- newvalp = (void *) A(a32.newval);
- if ((oldvalp && get_user(oldlen, (int *) A(a32.oldlenp)))
- || !access_ok(VERIFY_WRITE, namep, 0)
- || !access_ok(VERIFY_WRITE, oldvalp, 0)
- || !access_ok(VERIFY_WRITE, newvalp, 0))
- return -EFAULT;
- set_fs(KERNEL_DS);
- lock_kernel();
- ret = do_sysctl(namep, a32.nlen, oldvalp, &oldlen, newvalp, (size_t) a32.newlen);
- unlock_kernel();
- set_fs(old_fs);
- if (oldvalp && put_user (oldlen, (int *) A(a32.oldlenp)))
- return -EFAULT;
- return ret;
- }
- asmlinkage long
- sys32_newuname (struct new_utsname *name)
- {
- extern asmlinkage long sys_newuname(struct new_utsname * name);
- int ret = sys_newuname(name);
- if (!ret)
- if (copy_to_user(name->machine, "i686 ", 8))
- ret = -EFAULT;
- return ret;
- }
- extern asmlinkage long sys_getresuid (uid_t *ruid, uid_t *euid, uid_t *suid);
- asmlinkage long
- sys32_getresuid16 (u16 *ruid, u16 *euid, u16 *suid)
- {
- uid_t a, b, c;
- int ret;
- mm_segment_t old_fs = get_fs();
- set_fs(KERNEL_DS);
- ret = sys_getresuid(&a, &b, &c);
- set_fs(old_fs);
- if (put_user(a, ruid) || put_user(b, euid) || put_user(c, suid))
- return -EFAULT;
- return ret;
- }
- extern asmlinkage long sys_getresgid (gid_t *rgid, gid_t *egid, gid_t *sgid);
- asmlinkage long
- sys32_getresgid16 (u16 *rgid, u16 *egid, u16 *sgid)
- {
- gid_t a, b, c;
- int ret;
- mm_segment_t old_fs = get_fs();
- set_fs(KERNEL_DS);
- ret = sys_getresgid(&a, &b, &c);
- set_fs(old_fs);
- if (ret)
- return ret;
- return put_user(a, rgid) | put_user(b, egid) | put_user(c, sgid);
- }
- asmlinkage long
- sys32_lseek (unsigned int fd, int offset, unsigned int whence)
- {
- extern off_t sys_lseek (unsigned int fd, off_t offset, unsigned int origin);
- /* Sign-extension of "offset" is important here... */
- return sys_lseek(fd, offset, whence);
- }
- extern asmlinkage long sys_getgroups (int gidsetsize, gid_t *grouplist);
- asmlinkage long
- sys32_getgroups16 (int gidsetsize, short *grouplist)
- {
- mm_segment_t old_fs = get_fs();
- gid_t gl[NGROUPS];
- int ret, i;
- set_fs(KERNEL_DS);
- ret = sys_getgroups(gidsetsize, gl);
- set_fs(old_fs);
- if (gidsetsize && ret > 0 && ret <= NGROUPS)
- for (i = 0; i < ret; i++, grouplist++)
- if (put_user(gl[i], grouplist))
- return -EFAULT;
- return ret;
- }
- extern asmlinkage long sys_setgroups (int gidsetsize, gid_t *grouplist);
- asmlinkage long
- sys32_setgroups16 (int gidsetsize, short *grouplist)
- {
- mm_segment_t old_fs = get_fs();
- gid_t gl[NGROUPS];
- int ret, i;
- if ((unsigned) gidsetsize > NGROUPS)
- return -EINVAL;
- for (i = 0; i < gidsetsize; i++, grouplist++)
- if (get_user(gl[i], grouplist))
- return -EFAULT;
- set_fs(KERNEL_DS);
- ret = sys_setgroups(gidsetsize, gl);
- set_fs(old_fs);
- return ret;
- }
- /*
- * Unfortunately, the x86 compiler aligns variables of type "long long" to a 4 byte boundary
- * only, which means that the x86 version of "struct flock64" doesn't match the ia64 version
- * of struct flock.
- */
- static inline long
- ia32_put_flock (struct flock *l, unsigned long addr)
- {
- return (put_user(l->l_type, (short *) addr)
- | put_user(l->l_whence, (short *) (addr + 2))
- | put_user(l->l_start, (long *) (addr + 4))
- | put_user(l->l_len, (long *) (addr + 12))
- | put_user(l->l_pid, (int *) (addr + 20)));
- }
- static inline long
- ia32_get_flock (struct flock *l, unsigned long addr)
- {
- unsigned int start_lo, start_hi, len_lo, len_hi;
- int err = (get_user(l->l_type, (short *) addr)
- | get_user(l->l_whence, (short *) (addr + 2))
- | get_user(start_lo, (int *) (addr + 4))
- | get_user(start_hi, (int *) (addr + 8))
- | get_user(len_lo, (int *) (addr + 12))
- | get_user(len_hi, (int *) (addr + 16))
- | get_user(l->l_pid, (int *) (addr + 20)));
- l->l_start = ((unsigned long) start_hi << 32) | start_lo;
- l->l_len = ((unsigned long) len_hi << 32) | len_lo;
- return err;
- }
- asmlinkage long
- sys32_fcntl64 (unsigned int fd, unsigned int cmd, unsigned int arg)
- {
- mm_segment_t old_fs;
- struct flock f;
- long ret;
- switch (cmd) {
- case F_GETLK64:
- case F_SETLK64:
- case F_SETLKW64:
- if (ia32_get_flock(&f, arg))
- return -EFAULT;
- old_fs = get_fs();
- set_fs(KERNEL_DS);
- ret = sys_fcntl(fd, cmd, (unsigned long) &f);
- set_fs(old_fs);
- if (cmd == F_GETLK && ia32_put_flock(&f, arg))
- return -EFAULT;
- break;
- default:
- ret = sys32_fcntl(fd, cmd, arg);
- break;
- }
- return ret;
- }
- asmlinkage long
- sys32_truncate64 (unsigned int path, unsigned int len_lo, unsigned int len_hi)
- {
- extern asmlinkage long sys_truncate (const char *path, unsigned long length);
- return sys_truncate((const char *) A(path), ((unsigned long) len_hi << 32) | len_lo);
- }
- asmlinkage long
- sys32_ftruncate64 (int fd, unsigned int len_lo, unsigned int len_hi)
- {
- extern asmlinkage long sys_ftruncate (int fd, unsigned long length);
- return sys_ftruncate(fd, ((unsigned long) len_hi << 32) | len_lo);
- }
- static int
- putstat64 (struct stat64 *ubuf, struct stat *kbuf)
- {
- int err;
- if (clear_user(ubuf, sizeof(*ubuf)))
- return 1;
- err = __put_user(kbuf->st_dev, &ubuf->st_dev);
- err |= __put_user(kbuf->st_ino, &ubuf->__st_ino);
- err |= __put_user(kbuf->st_ino, &ubuf->st_ino_lo);
- err |= __put_user(kbuf->st_ino >> 32, &ubuf->st_ino_hi);
- err |= __put_user(kbuf->st_mode, &ubuf->st_mode);
- err |= __put_user(kbuf->st_nlink, &ubuf->st_nlink);
- err |= __put_user(kbuf->st_uid, &ubuf->st_uid);
- err |= __put_user(kbuf->st_gid, &ubuf->st_gid);
- err |= __put_user(kbuf->st_rdev, &ubuf->st_rdev);
- err |= __put_user(kbuf->st_size, &ubuf->st_size_lo);
- err |= __put_user((kbuf->st_size >> 32), &ubuf->st_size_hi);
- err |= __put_user(kbuf->st_atime, &ubuf->st_atime);
- err |= __put_user(kbuf->st_mtime, &ubuf->st_mtime);
- err |= __put_user(kbuf->st_ctime, &ubuf->st_ctime);
- err |= __put_user(kbuf->st_blksize, &ubuf->st_blksize);
- err |= __put_user(kbuf->st_blocks, &ubuf->st_blocks);
- return err;
- }
- asmlinkage long
- sys32_stat64 (char *filename, struct stat64 *statbuf)
- {
- mm_segment_t old_fs = get_fs();
- struct stat s;
- long ret;
- set_fs(KERNEL_DS);
- ret = sys_newstat(filename, &s);
- set_fs(old_fs);
- if (putstat64(statbuf, &s))
- return -EFAULT;
- return ret;
- }
- asmlinkage long
- sys32_lstat64 (char *filename, struct stat64 *statbuf)
- {
- mm_segment_t old_fs = get_fs();
- struct stat s;
- long ret;
- set_fs(KERNEL_DS);
- ret = sys_newlstat(filename, &s);
- set_fs(old_fs);
- if (putstat64(statbuf, &s))
- return -EFAULT;
- return ret;
- }
- asmlinkage long
- sys32_fstat64 (unsigned int fd, struct stat64 *statbuf)
- {
- mm_segment_t old_fs = get_fs();
- struct stat s;
- long ret;
- set_fs(KERNEL_DS);
- ret = sys_newfstat(fd, &s);
- set_fs(old_fs);
- if (putstat64(statbuf, &s))
- return -EFAULT;
- return ret;
- }
- asmlinkage long
- sys32_sigpending (unsigned int *set)
- {
- return do_sigpending(set, sizeof(*set));
- }
- struct sysinfo32 {
- s32 uptime;
- u32 loads[3];
- u32 totalram;
- u32 freeram;
- u32 sharedram;
- u32 bufferram;
- u32 totalswap;
- u32 freeswap;
- unsigned short procs;
- char _f[22];
- };
- asmlinkage long
- sys32_sysinfo (struct sysinfo32 *info)
- {
- extern asmlinkage long sys_sysinfo (struct sysinfo *);
- mm_segment_t old_fs = get_fs();
- struct sysinfo s;
- long ret, err;
- set_fs(KERNEL_DS);
- ret = sys_sysinfo(&s);
- set_fs(old_fs);
- if (!access_ok(VERIFY_WRITE, info, sizeof(*info)))
- return -EFAULT;
- err = __put_user(s.uptime, &info->uptime);
- err |= __put_user(s.loads[0], &info->loads[0]);
- err |= __put_user(s.loads[1], &info->loads[1]);
- err |= __put_user(s.loads[2], &info->loads[2]);
- err |= __put_user(s.totalram, &info->totalram);
- err |= __put_user(s.freeram, &info->freeram);
- err |= __put_user(s.sharedram, &info->sharedram);
- err |= __put_user(s.bufferram, &info->bufferram);
- err |= __put_user(s.totalswap, &info->totalswap);
- err |= __put_user(s.freeswap, &info->freeswap);
- err |= __put_user(s.procs, &info->procs);
- if (err)
- return -EFAULT;
- return ret;
- }
- /* In order to reduce some races, while at the same time doing additional
- * checking and hopefully speeding things up, we copy filenames to the
- * kernel data space before using them..
- *
- * POSIX.1 2.4: an empty pathname is invalid (ENOENT).
- */
- static inline int
- do_getname32 (const char *filename, char *page)
- {
- int retval;
- /* 32bit pointer will be always far below TASK_SIZE :)) */
- retval = strncpy_from_user((char *)page, (char *)filename, PAGE_SIZE);
- if (retval > 0) {
- if (retval < PAGE_SIZE)
- return 0;
- return -ENAMETOOLONG;
- } else if (!retval)
- retval = -ENOENT;
- return retval;
- }
- static char *
- getname32 (const char *filename)
- {
- char *tmp, *result;
- result = ERR_PTR(-ENOMEM);
- tmp = (char *)__get_free_page(GFP_KERNEL);
- if (tmp) {
- int retval = do_getname32(filename, tmp);
- result = tmp;
- if (retval < 0) {
- putname(tmp);
- result = ERR_PTR(retval);
- }
- }
- return result;
- }
- struct dqblk32 {
- __u32 dqb_bhardlimit;
- __u32 dqb_bsoftlimit;
- __u32 dqb_curblocks;
- __u32 dqb_ihardlimit;
- __u32 dqb_isoftlimit;
- __u32 dqb_curinodes;
- __kernel_time_t32 dqb_btime;
- __kernel_time_t32 dqb_itime;
- };
- asmlinkage long
- sys32_quotactl (int cmd, unsigned int special, int id, struct dqblk32 *addr)
- {
- extern asmlinkage long sys_quotactl (int, const char *, int, caddr_t);
- int cmds = cmd >> SUBCMDSHIFT;
- mm_segment_t old_fs;
- struct dqblk d;
- char *spec;
- long err;
- switch (cmds) {
- case Q_GETQUOTA:
- break;
- case Q_SETQUOTA:
- case Q_SETUSE:
- case Q_SETQLIM:
- if (copy_from_user (&d, addr, sizeof(struct dqblk32)))
- return -EFAULT;
- d.dqb_itime = ((struct dqblk32 *)&d)->dqb_itime;
- d.dqb_btime = ((struct dqblk32 *)&d)->dqb_btime;
- break;
- default:
- return sys_quotactl(cmd, (void *) A(special), id, (caddr_t) addr);
- }
- spec = getname32((void *) A(special));
- err = PTR_ERR(spec);
- if (IS_ERR(spec))
- return err;
- old_fs = get_fs ();
- set_fs(KERNEL_DS);
- err = sys_quotactl(cmd, (const char *)spec, id, (caddr_t)&d);
- set_fs(old_fs);
- putname(spec);
- if (cmds == Q_GETQUOTA) {
- __kernel_time_t b = d.dqb_btime, i = d.dqb_itime;
- ((struct dqblk32 *)&d)->dqb_itime = i;
- ((struct dqblk32 *)&d)->dqb_btime = b;
- if (copy_to_user(addr, &d, sizeof(struct dqblk32)))
- return -EFAULT;
- }
- return err;
- }
- asmlinkage long
- sys32_sched_rr_get_interval (pid_t pid, struct timespec32 *interval)
- {
- extern asmlinkage long sys_sched_rr_get_interval (pid_t, struct timespec *);
- mm_segment_t old_fs = get_fs();
- struct timespec t;
- long ret;
- set_fs(KERNEL_DS);
- ret = sys_sched_rr_get_interval(pid, &t);
- set_fs(old_fs);
- if (put_user (t.tv_sec, &interval->tv_sec) || put_user (t.tv_nsec, &interval->tv_nsec))
- return -EFAULT;
- return ret;
- }
- asmlinkage long
- sys32_pread (unsigned int fd, void *buf, unsigned int count, u32 pos_lo, u32 pos_hi)
- {
- extern asmlinkage long sys_pread (unsigned int, char *, size_t, loff_t);
- return sys_pread(fd, buf, count, ((unsigned long) pos_hi << 32) | pos_lo);
- }
- asmlinkage long
- sys32_pwrite (unsigned int fd, void *buf, unsigned int count, u32 pos_lo, u32 pos_hi)
- {
- extern asmlinkage long sys_pwrite (unsigned int, const char *, size_t, loff_t);
- return sys_pwrite(fd, buf, count, ((unsigned long) pos_hi << 32) | pos_lo);
- }
- asmlinkage long
- sys32_sendfile (int out_fd, int in_fd, int *offset, unsigned int count)
- {
- extern asmlinkage long sys_sendfile (int, int, off_t *, size_t);
- mm_segment_t old_fs = get_fs();
- long ret;
- off_t of;
- if (offset && get_user(of, offset))
- return -EFAULT;
- set_fs(KERNEL_DS);
- ret = sys_sendfile(out_fd, in_fd, offset ? &of : NULL, count);
- set_fs(old_fs);
- if (!ret && offset && put_user(of, offset))
- return -EFAULT;
- return ret;
- }
- asmlinkage long
- sys32_personality (unsigned int personality)
- {
- extern asmlinkage long sys_personality (unsigned long);
- long ret;
- if (current->personality == PER_LINUX32 && personality == PER_LINUX)
- personality = PER_LINUX32;
- ret = sys_personality(personality);
- if (ret == PER_LINUX32)
- ret = PER_LINUX;
- return ret;
- }
- #ifdef NOTYET /* UNTESTED FOR IA64 FROM HERE DOWN */
- struct ncp_mount_data32 {
- int version;
- unsigned int ncp_fd;
- __kernel_uid_t32 mounted_uid;
- int wdog_pid;
- unsigned char mounted_vol[NCP_VOLNAME_LEN + 1];
- unsigned int time_out;
- unsigned int retry_count;
- unsigned int flags;
- __kernel_uid_t32 uid;
- __kernel_gid_t32 gid;
- __kernel_mode_t32 file_mode;
- __kernel_mode_t32 dir_mode;
- };
- static void *
- do_ncp_super_data_conv(void *raw_data)
- {
- struct ncp_mount_data *n = (struct ncp_mount_data *)raw_data;
- struct ncp_mount_data32 *n32 = (struct ncp_mount_data32 *)raw_data;
- n->dir_mode = n32->dir_mode;
- n->file_mode = n32->file_mode;
- n->gid = n32->gid;
- n->uid = n32->uid;
- memmove (n->mounted_vol, n32->mounted_vol,
- (sizeof (n32->mounted_vol) + 3 * sizeof (unsigned int)));
- n->wdog_pid = n32->wdog_pid;
- n->mounted_uid = n32->mounted_uid;
- return raw_data;
- }
- struct smb_mount_data32 {
- int version;
- __kernel_uid_t32 mounted_uid;
- __kernel_uid_t32 uid;
- __kernel_gid_t32 gid;
- __kernel_mode_t32 file_mode;
- __kernel_mode_t32 dir_mode;
- };
- static void *
- do_smb_super_data_conv(void *raw_data)
- {
- struct smb_mount_data *s = (struct smb_mount_data *)raw_data;
- struct smb_mount_data32 *s32 = (struct smb_mount_data32 *)raw_data;
- s->version = s32->version;
- s->mounted_uid = s32->mounted_uid;
- s->uid = s32->uid;
- s->gid = s32->gid;
- s->file_mode = s32->file_mode;
- s->dir_mode = s32->dir_mode;
- return raw_data;
- }
- static int
- copy_mount_stuff_to_kernel(const void *user, unsigned long *kernel)
- {
- int i;
- unsigned long page;
- struct vm_area_struct *vma;
- *kernel = 0;
- if(!user)
- return 0;
- vma = find_vma(current->mm, (unsigned long)user);
- if(!vma || (unsigned long)user < vma->vm_start)
- return -EFAULT;
- if(!(vma->vm_flags & VM_READ))
- return -EFAULT;
- i = vma->vm_end - (unsigned long) user;
- if(PAGE_SIZE <= (unsigned long) i)
- i = PAGE_SIZE - 1;
- if(!(page = __get_free_page(GFP_KERNEL)))
- return -ENOMEM;
- if(copy_from_user((void *) page, user, i)) {
- free_page(page);
- return -EFAULT;
- }
- *kernel = page;
- return 0;
- }
- extern asmlinkage long sys_mount(char * dev_name, char * dir_name, char * type,
- unsigned long new_flags, void *data);
- #define SMBFS_NAME "smbfs"
- #define NCPFS_NAME "ncpfs"
- asmlinkage long
- sys32_mount(char *dev_name, char *dir_name, char *type,
- unsigned long new_flags, u32 data)
- {
- unsigned long type_page;
- int err, is_smb, is_ncp;
- if(!capable(CAP_SYS_ADMIN))
- return -EPERM;
- is_smb = is_ncp = 0;
- err = copy_mount_stuff_to_kernel((const void *)type, &type_page);
- if(err)
- return err;
- if(type_page) {
- is_smb = !strcmp((char *)type_page, SMBFS_NAME);
- is_ncp = !strcmp((char *)type_page, NCPFS_NAME);
- }
- if(!is_smb && !is_ncp) {
- if(type_page)
- free_page(type_page);
- return sys_mount(dev_name, dir_name, type, new_flags,
- (void *)AA(data));
- } else {
- unsigned long dev_page, dir_page, data_page;
- err = copy_mount_stuff_to_kernel((const void *)dev_name,
- &dev_page);
- if(err)
- goto out;
- err = copy_mount_stuff_to_kernel((const void *)dir_name,
- &dir_page);
- if(err)
- goto dev_out;
- err = copy_mount_stuff_to_kernel((const void *)AA(data),
- &data_page);
- if(err)
- goto dir_out;
- if(is_ncp)
- do_ncp_super_data_conv((void *)data_page);
- else if(is_smb)
- do_smb_super_data_conv((void *)data_page);
- else
- panic("The problem is here...");
- err = do_mount((char *)dev_page, (char *)dir_page,
- (char *)type_page, new_flags,
- (void *)data_page);
- if(data_page)
- free_page(data_page);
- dir_out:
- if(dir_page)
- free_page(dir_page);
- dev_out:
- if(dev_page)
- free_page(dev_page);
- out:
- if(type_page)
- free_page(type_page);
- return err;
- }
- }
- extern asmlinkage long sys_setreuid(uid_t ruid, uid_t euid);
- asmlinkage long sys32_setreuid(__kernel_uid_t32 ruid, __kernel_uid_t32 euid)
- {
- uid_t sruid, seuid;
- sruid = (ruid == (__kernel_uid_t32)-1) ? ((uid_t)-1) : ((uid_t)ruid);
- seuid = (euid == (__kernel_uid_t32)-1) ? ((uid_t)-1) : ((uid_t)euid);
- return sys_setreuid(sruid, seuid);
- }
- extern asmlinkage long sys_setresuid(uid_t ruid, uid_t euid, uid_t suid);
- asmlinkage long
- sys32_setresuid(__kernel_uid_t32 ruid, __kernel_uid_t32 euid,
- __kernel_uid_t32 suid)
- {
- uid_t sruid, seuid, ssuid;
- sruid = (ruid == (__kernel_uid_t32)-1) ? ((uid_t)-1) : ((uid_t)ruid);
- seuid = (euid == (__kernel_uid_t32)-1) ? ((uid_t)-1) : ((uid_t)euid);
- ssuid = (suid == (__kernel_uid_t32)-1) ? ((uid_t)-1) : ((uid_t)suid);
- return sys_setresuid(sruid, seuid, ssuid);
- }
- extern asmlinkage long sys_setregid(gid_t rgid, gid_t egid);
- asmlinkage long
- sys32_setregid(__kernel_gid_t32 rgid, __kernel_gid_t32 egid)
- {
- gid_t srgid, segid;
- srgid = (rgid == (__kernel_gid_t32)-1) ? ((gid_t)-1) : ((gid_t)rgid);
- segid = (egid == (__kernel_gid_t32)-1) ? ((gid_t)-1) : ((gid_t)egid);
- return sys_setregid(srgid, segid);
- }
- extern asmlinkage long sys_setresgid(gid_t rgid, gid_t egid, gid_t sgid);
- asmlinkage long
- sys32_setresgid(__kernel_gid_t32 rgid, __kernel_gid_t32 egid,
- __kernel_gid_t32 sgid)
- {
- gid_t srgid, segid, ssgid;
- srgid = (rgid == (__kernel_gid_t32)-1) ? ((gid_t)-1) : ((gid_t)rgid);
- segid = (egid == (__kernel_gid_t32)-1) ? ((gid_t)-1) : ((gid_t)egid);
- ssgid = (sgid == (__kernel_gid_t32)-1) ? ((gid_t)-1) : ((gid_t)sgid);
- return sys_setresgid(srgid, segid, ssgid);
- }
- /* Stuff for NFS server syscalls... */
- struct nfsctl_svc32 {
- u16 svc32_port;
- s32 svc32_nthreads;
- };
- struct nfsctl_client32 {
- s8 cl32_ident[NFSCLNT_IDMAX+1];
- s32 cl32_naddr;
- struct in_addr cl32_addrlist[NFSCLNT_ADDRMAX];
- s32 cl32_fhkeytype;
- s32 cl32_fhkeylen;
- u8 cl32_fhkey[NFSCLNT_KEYMAX];
- };
- struct nfsctl_export32 {
- s8 ex32_client[NFSCLNT_IDMAX+1];
- s8 ex32_path[NFS_MAXPATHLEN+1];
- __kernel_dev_t32 ex32_dev;
- __kernel_ino_t32 ex32_ino;
- s32 ex32_flags;
- __kernel_uid_t32 ex32_anon_uid;
- __kernel_gid_t32 ex32_anon_gid;
- };
- struct nfsctl_uidmap32 {
- u32 ug32_ident; /* char * */
- __kernel_uid_t32 ug32_uidbase;
- s32 ug32_uidlen;
- u32 ug32_udimap; /* uid_t * */
- __kernel_uid_t32 ug32_gidbase;
- s32 ug32_gidlen;
- u32 ug32_gdimap; /* gid_t * */
- };
- struct nfsctl_fhparm32 {
- struct sockaddr gf32_addr;
- __kernel_dev_t32 gf32_dev;
- __kernel_ino_t32 gf32_ino;
- s32 gf32_version;
- };
- struct nfsctl_arg32 {
- s32 ca32_version; /* safeguard */
- union {
- struct nfsctl_svc32 u32_svc;
- struct nfsctl_client32 u32_client;
- struct nfsctl_export32 u32_export;
- struct nfsctl_uidmap32 u32_umap;
- struct nfsctl_fhparm32 u32_getfh;
- u32 u32_debug;
- } u;
- #define ca32_svc u.u32_svc
- #define ca32_client u.u32_client
- #define ca32_export u.u32_export
- #define ca32_umap u.u32_umap
- #define ca32_getfh u.u32_getfh
- #define ca32_authd u.u32_authd
- #define ca32_debug u.u32_debug
- };
- union nfsctl_res32 {
- struct knfs_fh cr32_getfh;
- u32 cr32_debug;
- };
- static int
- nfs_svc32_trans(struct nfsctl_arg *karg, struct nfsctl_arg32 *arg32)
- {
- int err;
- err = __get_user(karg->ca_version, &arg32->ca32_version);
- err |= __get_user(karg->ca_svc.svc_port, &arg32->ca32_svc.svc32_port);
- err |= __get_user(karg->ca_svc.svc_nthreads,
- &arg32->ca32_svc.svc32_nthreads);
- return err;
- }
- static int
- nfs_clnt32_trans(struct nfsctl_arg *karg, struct nfsctl_arg32 *arg32)
- {
- int err;
- err = __get_user(karg->ca_version, &arg32->ca32_version);
- err |= copy_from_user(&karg->ca_client.cl_ident[0],
- &arg32->ca32_client.cl32_ident[0],
- NFSCLNT_IDMAX);
- err |= __get_user(karg->ca_client.cl_naddr,
- &arg32->ca32_client.cl32_naddr);
- err |= copy_from_user(&karg->ca_client.cl_addrlist[0],
- &arg32->ca32_client.cl32_addrlist[0],
- (sizeof(struct in_addr) * NFSCLNT_ADDRMAX));
- err |= __get_user(karg->ca_client.cl_fhkeytype,
- &arg32->ca32_client.cl32_fhkeytype);
- err |= __get_user(karg->ca_client.cl_fhkeylen,
- &arg32->ca32_client.cl32_fhkeylen);
- err |= copy_from_user(&karg->ca_client.cl_fhkey[0],
- &arg32->ca32_client.cl32_fhkey[0],
- NFSCLNT_KEYMAX);
- return err;
- }
- static int
- nfs_exp32_trans(struct nfsctl_arg *karg, struct nfsctl_arg32 *arg32)
- {
- int err;
- err = __get_user(karg->ca_version, &arg32->ca32_version);
- err |= copy_from_user(&karg->ca_export.ex_client[0],
- &arg32->ca32_export.ex32_client[0],
- NFSCLNT_IDMAX);
- err |= copy_from_user(&karg->ca_export.ex_path[0],
- &arg32->ca32_export.ex32_path[0],
- NFS_MAXPATHLEN);
- err |= __get_user(karg->ca_export.ex_dev,
- &arg32->ca32_export.ex32_dev);
- err |= __get_user(karg->ca_export.ex_ino,
- &arg32->ca32_export.ex32_ino);
- err |= __get_user(karg->ca_export.ex_flags,
- &arg32->ca32_export.ex32_flags);
- err |= __get_user(karg->ca_export.ex_anon_uid,
- &arg32->ca32_export.ex32_anon_uid);
- err |= __get_user(karg->ca_export.ex_anon_gid,
- &arg32->ca32_export.ex32_anon_gid);
- return err;
- }
- static int
- nfs_uud32_trans(struct nfsctl_arg *karg, struct nfsctl_arg32 *arg32)
- {
- u32 uaddr;
- int i;
- int err;
- memset(karg, 0, sizeof(*karg));
- if(__get_user(karg->ca_version, &arg32->ca32_version))
- return -EFAULT;
- karg->ca_umap.ug_ident = (char *)get_free_page(GFP_USER);
- if(!karg->ca_umap.ug_ident)
- return -ENOMEM;
- err = __get_user(uaddr, &arg32->ca32_umap.ug32_ident);
- if(strncpy_from_user(karg->ca_umap.ug_ident,
- (char *)A(uaddr), PAGE_SIZE) <= 0)
- return -EFAULT;
- err |= __get_user(karg->ca_umap.ug_uidbase,
- &arg32->ca32_umap.ug32_uidbase);
- err |= __get_user(karg->ca_umap.ug_uidlen,
- &arg32->ca32_umap.ug32_uidlen);
- err |= __get_user(uaddr, &arg32->ca32_umap.ug32_udimap);
- if (err)
- return -EFAULT;
- karg->ca_umap.ug_udimap = kmalloc((sizeof(uid_t) *
- karg->ca_umap.ug_uidlen),
- GFP_USER);
- if(!karg->ca_umap.ug_udimap)
- return -ENOMEM;
- for(i = 0; i < karg->ca_umap.ug_uidlen; i++)
- err |= __get_user(karg->ca_umap.ug_udimap[i],
- &(((__kernel_uid_t32 *)A(uaddr))[i]));
- err |= __get_user(karg->ca_umap.ug_gidbase,
- &arg32->ca32_umap.ug32_gidbase);
- err |= __get_user(karg->ca_umap.ug_uidlen,
- &arg32->ca32_umap.ug32_gidlen);
- err |= __get_user(uaddr, &arg32->ca32_umap.ug32_gdimap);
- if (err)
- return -EFAULT;
- karg->ca_umap.ug_gdimap = kmalloc((sizeof(gid_t) *
- karg->ca_umap.ug_uidlen),
- GFP_USER);
- if(!karg->ca_umap.ug_gdimap)
- return -ENOMEM;
- for(i = 0; i < karg->ca_umap.ug_gidlen; i++)
- err |= __get_user(karg->ca_umap.ug_gdimap[i],
- &(((__kernel_gid_t32 *)A(uaddr))[i]));
- return err;
- }
- static int
- nfs_getfh32_trans(struct nfsctl_arg *karg, struct nfsctl_arg32 *arg32)
- {
- int err;
- err = __get_user(karg->ca_version, &arg32->ca32_version);
- err |= copy_from_user(&karg->ca_getfh.gf_addr,
- &arg32->ca32_getfh.gf32_addr,
- (sizeof(struct sockaddr)));
- err |= __get_user(karg->ca_getfh.gf_dev,
- &arg32->ca32_getfh.gf32_dev);
- err |= __get_user(karg->ca_getfh.gf_ino,
- &arg32->ca32_getfh.gf32_ino);
- err |= __get_user(karg->ca_getfh.gf_version,
- &arg32->ca32_getfh.gf32_version);
- return err;
- }
- static int
- nfs_getfh32_res_trans(union nfsctl_res *kres, union nfsctl_res32 *res32)
- {
- int err;
- err = copy_to_user(&res32->cr32_getfh,
- &kres->cr_getfh,
- sizeof(res32->cr32_getfh));
- err |= __put_user(kres->cr_debug, &res32->cr32_debug);
- return err;
- }
- extern asmlinkage long sys_nfsservctl(int cmd, void *arg, void *resp);
- int asmlinkage
- sys32_nfsservctl(int cmd, struct nfsctl_arg32 *arg32, union nfsctl_res32 *res32)
- {
- struct nfsctl_arg *karg = NULL;
- union nfsctl_res *kres = NULL;
- mm_segment_t oldfs;
- int err;
- karg = kmalloc(sizeof(*karg), GFP_USER);
- if(!karg)
- return -ENOMEM;
- if(res32) {
- kres = kmalloc(sizeof(*kres), GFP_USER);
- if(!kres) {
- kfree(karg);
- return -ENOMEM;
- }
- }
- switch(cmd) {
- case NFSCTL_SVC:
- err = nfs_svc32_trans(karg, arg32);
- break;
- case NFSCTL_ADDCLIENT:
- err = nfs_clnt32_trans(karg, arg32);
- break;
- case NFSCTL_DELCLIENT:
- err = nfs_clnt32_trans(karg, arg32);
- break;
- case NFSCTL_EXPORT:
- err = nfs_exp32_trans(karg, arg32);
- break;
- /* This one is unimplemented, be we're ready for it. */
- case NFSCTL_UGIDUPDATE:
- err = nfs_uud32_trans(karg, arg32);
- break;
- case NFSCTL_GETFH:
- err = nfs_getfh32_trans(karg, arg32);
- break;
- default:
- err = -EINVAL;
- break;
- }
- if(err)
- goto done;
- oldfs = get_fs();
- set_fs(KERNEL_DS);
- err = sys_nfsservctl(cmd, karg, kres);
- set_fs(oldfs);
- if(!err && cmd == NFSCTL_GETFH)
- err = nfs_getfh32_res_trans(kres, res32);
- done:
- if(karg) {
- if(cmd == NFSCTL_UGIDUPDATE) {
- if(karg->ca_umap.ug_ident)
- kfree(karg->ca_umap.ug_ident);
- if(karg->ca_umap.ug_udimap)
- kfree(karg->ca_umap.ug_udimap);
- if(karg->ca_umap.ug_gdimap)
- kfree(karg->ca_umap.ug_gdimap);
- }
- kfree(karg);
- }
- if(kres)
- kfree(kres);
- return err;
- }
- /* Handle adjtimex compatability. */
- struct timex32 {
- u32 modes;
- s32 offset, freq, maxerror, esterror;
- s32 status, constant, precision, tolerance;
- struct timeval32 time;
- s32 tick;
- s32 ppsfreq, jitter, shift, stabil;
- s32 jitcnt, calcnt, errcnt, stbcnt;
- s32 :32; s32 :32; s32 :32; s32 :32;
- s32 :32; s32 :32; s32 :32; s32 :32;
- s32 :32; s32 :32; s32 :32; s32 :32;
- };
- extern int do_adjtimex(struct timex *);
- asmlinkage long
- sys32_adjtimex(struct timex32 *utp)
- {
- struct timex txc;
- int ret;
- memset(&txc, 0, sizeof(struct timex));
- if(get_user(txc.modes, &utp->modes) ||
- __get_user(txc.offset, &utp->offset) ||
- __get_user(txc.freq, &utp->freq) ||
- __get_user(txc.maxerror, &utp->maxerror) ||
- __get_user(txc.esterror, &utp->esterror) ||
- __get_user(txc.status, &utp->status) ||
- __get_user(txc.constant, &utp->constant) ||
- __get_user(txc.precision, &utp->precision) ||
- __get_user(txc.tolerance, &utp->tolerance) ||
- __get_user(txc.time.tv_sec, &utp->time.tv_sec) ||
- __get_user(txc.time.tv_usec, &utp->time.tv_usec) ||
- __get_user(txc.tick, &utp->tick) ||
- __get_user(txc.ppsfreq, &utp->ppsfreq) ||
- __get_user(txc.jitter, &utp->jitter) ||
- __get_user(txc.shift, &utp->shift) ||
- __get_user(txc.stabil, &utp->stabil) ||
- __get_user(txc.jitcnt, &utp->jitcnt) ||
- __get_user(txc.calcnt, &utp->calcnt) ||
- __get_user(txc.errcnt, &utp->errcnt) ||
- __get_user(txc.stbcnt, &utp->stbcnt))
- return -EFAULT;
- ret = do_adjtimex(&txc);
- if(put_user(txc.modes, &utp->modes) ||
- __put_user(txc.offset, &utp->offset) ||
- __put_user(txc.freq, &utp->freq) ||
- __put_user(txc.maxerror, &utp->maxerror) ||
- __put_user(txc.esterror, &utp->esterror) ||
- __put_user(txc.status, &utp->status) ||
- __put_user(txc.constant, &utp->constant) ||
- __put_user(txc.precision, &utp->precision) ||
- __put_user(txc.tolerance, &utp->tolerance) ||
- __put_user(txc.time.tv_sec, &utp->time.tv_sec) ||
- __put_user(txc.time.tv_usec, &utp->time.tv_usec) ||
- __put_user(txc.tick, &utp->tick) ||
- __put_user(txc.ppsfreq, &utp->ppsfreq) ||
- __put_user(txc.jitter, &utp->jitter) ||
- __put_user(txc.shift, &utp->shift) ||
- __put_user(txc.stabil, &utp->stabil) ||
- __put_user(txc.jitcnt, &utp->jitcnt) ||
- __put_user(txc.calcnt, &utp->calcnt) ||
- __put_user(txc.errcnt, &utp->errcnt) ||
- __put_user(txc.stbcnt, &utp->stbcnt))
- ret = -EFAULT;
- return ret;
- }
- #endif /* NOTYET */