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/*
* linux/arch/alpha/kernel/osf_sys.c
*
* Copyright (C) 1995 Linus Torvalds
*/
/*
* This file handles some of the stranger OSF/1 system call interfaces.
* Some of the system calls expect a non-C calling standard, others have
* special parameter blocks..
*/
#include <linux/errno.h>
#include <linux/sched.h>
#include <linux/kernel.h>
#include <linux/mm.h>
#include <linux/smp.h>
#include <linux/smp_lock.h>
#include <linux/stddef.h>
#include <linux/unistd.h>
#include <linux/ptrace.h>
#include <linux/slab.h>
#include <linux/user.h>
#include <linux/a.out.h>
#include <linux/utsname.h>
#include <linux/time.h>
#include <linux/timex.h>
#include <linux/major.h>
#include <linux/stat.h>
#include <linux/mman.h>
#include <linux/shm.h>
#include <linux/poll.h>
#include <linux/file.h>
#include <linux/types.h>
#include <linux/ipc.h>
#include <asm/fpu.h>
#include <asm/io.h>
#include <asm/uaccess.h>
#include <asm/system.h>
#include <asm/sysinfo.h>
#include <asm/hwrpb.h>
#include <asm/processor.h>
extern int do_pipe(int *);
extern asmlinkage unsigned long sys_brk(unsigned long);
/*
* Brk needs to return an error. Still support Linux's brk(0) query idiom,
* which OSF programs just shouldn't be doing. We're still not quite
* identical to OSF as we don't return 0 on success, but doing otherwise
* would require changes to libc. Hopefully this is good enough.
*/
asmlinkage unsigned long osf_brk(unsigned long brk)
{
unsigned long retval = sys_brk(brk);
if (brk && brk != retval)
retval = -ENOMEM;
return retval;
}
/*
* This is pure guess-work..
*/
asmlinkage int osf_set_program_attributes(
unsigned long text_start, unsigned long text_len,
unsigned long bss_start, unsigned long bss_len)
{
struct mm_struct *mm;
lock_kernel();
mm = current->mm;
mm->end_code = bss_start + bss_len;
mm->brk = bss_start + bss_len;
#if 0
printk("set_program_attributes(%lx %lx %lx %lx)\n",
text_start, text_len, bss_start, bss_len);
#endif
unlock_kernel();
return 0;
}
/*
* OSF/1 directory handling functions...
*
* The "getdents()" interface is much more sane: the "basep" stuff is
* braindamage (it can't really handle filesystems where the directory
* offset differences aren't the same as "d_reclen").
*/
#define NAME_OFFSET(de) ((int) ((de)->d_name - (char *) (de)))
#define ROUND_UP(x) (((x)+3) & ~3)
struct osf_dirent {
unsigned int d_ino;
unsigned short d_reclen;
unsigned short d_namlen;
char d_name[1];
};
struct osf_dirent_callback {
struct osf_dirent *dirent;
long *basep;
int count;
int error;
};
static int osf_filldir(void *__buf, const char *name, int namlen, loff_t offset,
ino_t ino, unsigned int d_type)
{
struct osf_dirent *dirent;
struct osf_dirent_callback *buf = (struct osf_dirent_callback *) __buf;
int reclen = ROUND_UP(NAME_OFFSET(dirent) + namlen + 1);
buf->error = -EINVAL; /* only used if we fail */
if (reclen > buf->count)
return -EINVAL;
if (buf->basep) {
put_user(offset, buf->basep);
buf->basep = NULL;
}
dirent = buf->dirent;
put_user(ino, &dirent->d_ino);
put_user(namlen, &dirent->d_namlen);
put_user(reclen, &dirent->d_reclen);
copy_to_user(dirent->d_name, name, namlen);
put_user(0, dirent->d_name + namlen);
((char *) dirent) += reclen;
buf->dirent = dirent;
buf->count -= reclen;
return 0;
}
asmlinkage int osf_getdirentries(unsigned int fd, struct osf_dirent *dirent,
unsigned int count, long *basep)
{
int error;
struct file *file;
struct osf_dirent_callback buf;
error = -EBADF;
file = fget(fd);
if (!file)
goto out;
buf.dirent = dirent;
buf.basep = basep;
buf.count = count;
buf.error = 0;
error = vfs_readdir(file, osf_filldir, &buf);
if (error < 0)
goto out_putf;
error = buf.error;
if (count != buf.count)
error = count - buf.count;
out_putf:
fput(file);
out:
return error;
}
#undef ROUND_UP
#undef NAME_OFFSET
/*
* Alpha syscall convention has no problem returning negative
* values:
*/
asmlinkage int osf_getpriority(int which, int who, int a2, int a3, int a4,
int a5, struct pt_regs regs)
{
extern int sys_getpriority(int, int);
int prio;
/*
* We don't need to acquire the kernel lock here, because
* all of these operations are local. sys_getpriority
* will get the lock as required..
*/
prio = sys_getpriority(which, who);
if (prio >= 0) {
regs.r0 = 0; /* special return: no errors */
prio = 20 - prio;
}
return prio;
}
/*
* No need to acquire the kernel lock, we're local..
*/
asmlinkage unsigned long sys_getxuid(int a0, int a1, int a2, int a3, int a4,
int a5, struct pt_regs regs)
{
struct task_struct * tsk = current;
(®s)->r20 = tsk->euid;
return tsk->uid;
}
asmlinkage unsigned long sys_getxgid(int a0, int a1, int a2, int a3, int a4,
int a5, struct pt_regs regs)
{
struct task_struct * tsk = current;
(®s)->r20 = tsk->egid;
return tsk->gid;
}
asmlinkage unsigned long sys_getxpid(int a0, int a1, int a2, int a3, int a4,
int a5, struct pt_regs regs)
{
struct task_struct *tsk = current;
/*
* This isn't strictly "local" any more and we should actually
* acquire the kernel lock. The "p_opptr" pointer might change
* if the parent goes away (or due to ptrace). But any race
* isn't actually going to matter, as if the parent happens
* to change we can happily return either of the pids.
*/
(®s)->r20 = tsk->p_opptr->pid;
return tsk->pid;
}
asmlinkage unsigned long osf_mmap(unsigned long addr, unsigned long len,
unsigned long prot, unsigned long flags, unsigned long fd,
unsigned long off)
{
struct file *file = NULL;
unsigned long ret = -EBADF;
#if 0
if (flags & (_MAP_HASSEMAPHORE | _MAP_INHERIT | _MAP_UNALIGNED))
printk("%s: unimplemented OSF mmap flags %04lx\n",
current->comm, flags);
#endif
if (!(flags & MAP_ANONYMOUS)) {
file = fget(fd);
if (!file)
goto out;
}
flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE);
down_write(¤t->mm->mmap_sem);
ret = do_mmap(file, addr, len, prot, flags, off);
up_write(¤t->mm->mmap_sem);
if (file)
fput(file);
out:
return ret;
}
/*
* The OSF/1 statfs structure is much larger, but this should
* match the beginning, at least.
*/
struct osf_statfs {
short f_type;
short f_flags;
int f_fsize;
int f_bsize;
int f_blocks;
int f_bfree;
int f_bavail;
int f_files;
int f_ffree;
__kernel_fsid_t f_fsid;
} *osf_stat;
static int linux_to_osf_statfs(struct statfs *linux_stat, struct osf_statfs *osf_stat, unsigned long bufsiz)
{
struct osf_statfs tmp_stat;
tmp_stat.f_type = linux_stat->f_type;
tmp_stat.f_flags = 0; /* mount flags */
/* Linux doesn't provide a "fundamental filesystem block size": */
tmp_stat.f_fsize = linux_stat->f_bsize;
tmp_stat.f_bsize = linux_stat->f_bsize;
tmp_stat.f_blocks = linux_stat->f_blocks;
tmp_stat.f_bfree = linux_stat->f_bfree;
tmp_stat.f_bavail = linux_stat->f_bavail;
tmp_stat.f_files = linux_stat->f_files;
tmp_stat.f_ffree = linux_stat->f_ffree;
tmp_stat.f_fsid = linux_stat->f_fsid;
if (bufsiz > sizeof(tmp_stat))
bufsiz = sizeof(tmp_stat);
return copy_to_user(osf_stat, &tmp_stat, bufsiz) ? -EFAULT : 0;
}
static int do_osf_statfs(struct dentry * dentry, struct osf_statfs *buffer, unsigned long bufsiz)
{
struct statfs linux_stat;
int error = vfs_statfs(dentry->d_inode->i_sb, &linux_stat);
if (!error)
error = linux_to_osf_statfs(&linux_stat, buffer, bufsiz);
return error;
}
asmlinkage int osf_statfs(char *path, struct osf_statfs *buffer, unsigned long bufsiz)
{
struct nameidata nd;
int retval;
retval = user_path_walk(path, &nd);
if (!retval) {
retval = do_osf_statfs(nd.dentry, buffer, bufsiz);
path_release(&nd);
}
return retval;
}
asmlinkage int osf_fstatfs(unsigned long fd, struct osf_statfs *buffer, unsigned long bufsiz)
{
struct file *file;
int retval;
retval = -EBADF;
file = fget(fd);
if (file) {
retval = do_osf_statfs(file->f_dentry, buffer, bufsiz);
fput(file);
}
return retval;
}
/*
* Uhh.. OSF/1 mount parameters aren't exactly obvious..
*
* Although to be frank, neither are the native Linux/i386 ones..
*/
struct ufs_args {
char *devname;
int flags;
uid_t exroot;
};
struct cdfs_args {
char *devname;
int flags;
uid_t exroot;
/*
* This has lots more here, which Linux handles with the option block
* but I'm too lazy to do the translation into ASCII.
*/
};
struct procfs_args {
char *devname;
int flags;
uid_t exroot;
};
/*
* We can't actually handle ufs yet, so we translate UFS mounts to
* ext2fs mounts. I wouldn't mind a UFS filesystem, but the UFS
* layout is so braindead it's a major headache doing it.
*
* Just how long ago was it written? OTOH our UFS driver may be still
* unhappy with OSF UFS. [CHECKME]
*/
static int osf_ufs_mount(char *dirname, struct ufs_args *args, int flags)
{
int retval;
struct cdfs_args tmp;
char *devname;
retval = -EFAULT;
if (copy_from_user(&tmp, args, sizeof(tmp)))
goto out;
devname = getname(tmp.devname);
retval = PTR_ERR(devname);
if (IS_ERR(devname))
goto out;
retval = do_mount(devname, dirname, "ext2", flags, NULL);
putname(devname);
out:
return retval;
}
static int osf_cdfs_mount(char *dirname, struct cdfs_args *args, int flags)
{
int retval;
struct cdfs_args tmp;
char *devname;
retval = -EFAULT;
if (copy_from_user(&tmp, args, sizeof(tmp)))
goto out;
devname = getname(tmp.devname);
retval = PTR_ERR(devname);
if (IS_ERR(devname))
goto out;
retval = do_mount(devname, dirname, "iso9660", flags, NULL);
putname(devname);
out:
return retval;
}
static int osf_procfs_mount(char *dirname, struct procfs_args *args, int flags)
{
struct procfs_args tmp;
if (copy_from_user(&tmp, args, sizeof(tmp)))
return -EFAULT;
return do_mount("", dirname, "proc", flags, NULL);
}
asmlinkage int osf_mount(unsigned long typenr, char *path, int flag, void *data)
{
int retval = -EINVAL;
char *name;
lock_kernel();
name = getname(path);
retval = PTR_ERR(name);
if (IS_ERR(name))
goto out;
switch (typenr) {
case 1:
retval = osf_ufs_mount(name, (struct ufs_args *) data, flag);
break;
case 6:
retval = osf_cdfs_mount(name, (struct cdfs_args *) data, flag);
break;
case 9:
retval = osf_procfs_mount(name, (struct procfs_args *) data, flag);
break;
default:
printk("osf_mount(%ld, %x)\n", typenr, flag);
}
putname(name);
out:
unlock_kernel();
return retval;
}
asmlinkage int osf_utsname(char *name)
{
int error;
down_read(&uts_sem);
error = -EFAULT;
if (copy_to_user(name + 0, system_utsname.sysname, 32))
goto out;
if (copy_to_user(name + 32, system_utsname.nodename, 32))
goto out;
if (copy_to_user(name + 64, system_utsname.release, 32))
goto out;
if (copy_to_user(name + 96, system_utsname.version, 32))
goto out;
if (copy_to_user(name + 128, system_utsname.machine, 32))
goto out;
error = 0;
out:
up_read(&uts_sem);
return error;
}
asmlinkage int osf_swapon(const char *path, int flags, int lowat, int hiwat)
{
int ret;
/* for now, simply ignore lowat and hiwat... */
lock_kernel();
ret = sys_swapon(path, flags);
unlock_kernel();
return ret;
}
asmlinkage unsigned long sys_getpagesize(void)
{
return PAGE_SIZE;
}
asmlinkage unsigned long sys_getdtablesize(void)
{
return NR_OPEN;
}
asmlinkage int sys_pipe(int a0, int a1, int a2, int a3, int a4, int a5,
struct pt_regs regs)
{
int fd[2];
int error;
error = do_pipe(fd);
if (error)
goto out;
(®s)->r20 = fd[1];
error = fd[0];
out:
return error;
}
/*
* For compatibility with OSF/1 only. Use utsname(2) instead.
*/
asmlinkage int osf_getdomainname(char *name, int namelen)
{
unsigned len;
int i, error;
error = verify_area(VERIFY_WRITE, name, namelen);
if (error)
goto out;
len = namelen;
if (namelen > 32)
len = 32;
down_read(&uts_sem);
for (i = 0; i < len; ++i) {
__put_user(system_utsname.domainname[i], name + i);
if (system_utsname.domainname[i] == '\0')
break;
}
up_read(&uts_sem);
out:
return error;
}
asmlinkage long osf_shmat(int shmid, void *shmaddr, int shmflg)
{
unsigned long raddr;
long err;
lock_kernel();
err = sys_shmat(shmid, shmaddr, shmflg, &raddr);
if (err)
goto out;
/*
* This works because all user-level addresses are
* non-negative longs!
*/
err = raddr;
out:
unlock_kernel();
return err;
}
/*
* The following stuff should move into a header file should it ever
* be labeled "officially supported." Right now, there is just enough
* support to avoid applications (such as tar) printing error
* messages. The attributes are not really implemented.
*/
/*
* Values for Property list entry flag
*/
#define PLE_PROPAGATE_ON_COPY 0x1 /* cp(1) will copy entry
by default */
#define PLE_FLAG_MASK 0x1 /* Valid flag values */
#define PLE_FLAG_ALL -1 /* All flag value */
struct proplistname_args {
unsigned int pl_mask;
unsigned int pl_numnames;
char **pl_names;
};
union pl_args {
struct setargs {
char *path;
long follow;
long nbytes;
char *buf;
} set;
struct fsetargs {
long fd;
long nbytes;
char *buf;
} fset;
struct getargs {
char *path;
long follow;
struct proplistname_args *name_args;
long nbytes;
char *buf;
int *min_buf_size;
} get;
struct fgetargs {
long fd;
struct proplistname_args *name_args;
long nbytes;
char *buf;
int *min_buf_size;
} fget;
struct delargs {
char *path;
long follow;
struct proplistname_args *name_args;
} del;
struct fdelargs {
long fd;
struct proplistname_args *name_args;
} fdel;
};
enum pl_code {
PL_SET = 1, PL_FSET = 2,
PL_GET = 3, PL_FGET = 4,
PL_DEL = 5, PL_FDEL = 6
};
asmlinkage long osf_proplist_syscall(enum pl_code code, union pl_args *args)
{
long error;
int *min_buf_size_ptr;
lock_kernel();
switch (code) {
case PL_SET:
error = verify_area(VERIFY_READ, &args->set.nbytes,
sizeof(args->set.nbytes));
if (!error)
error = args->set.nbytes;
break;
case PL_FSET:
error = verify_area(VERIFY_READ, &args->fset.nbytes,
sizeof(args->fset.nbytes));
if (!error)
error = args->fset.nbytes;
break;
case PL_GET:
get_user(min_buf_size_ptr, &args->get.min_buf_size);
error = verify_area(VERIFY_WRITE, min_buf_size_ptr,
sizeof(*min_buf_size_ptr));
if (!error)
put_user(0, min_buf_size_ptr);
break;
case PL_FGET:
get_user(min_buf_size_ptr, &args->fget.min_buf_size);
error = verify_area(VERIFY_WRITE, min_buf_size_ptr,
sizeof(*min_buf_size_ptr));
if (!error)
put_user(0, min_buf_size_ptr);
break;
case PL_DEL:
case PL_FDEL:
error = 0;
break;
default:
error = -EOPNOTSUPP;
break;
};
unlock_kernel();
return error;
}
asmlinkage int osf_sigstack(struct sigstack *uss, struct sigstack *uoss)
{
unsigned long usp = rdusp();
unsigned long oss_sp = current->sas_ss_sp + current->sas_ss_size;
unsigned long oss_os = on_sig_stack(usp);
int error;
if (uss) {
void *ss_sp;
error = -EFAULT;
if (get_user(ss_sp, &uss->ss_sp))
goto out;
/* If the current stack was set with sigaltstack, don't
swap stacks while we are on it. */
error = -EPERM;
if (current->sas_ss_sp && on_sig_stack(usp))
goto out;
/* Since we don't know the extent of the stack, and we don't
track onstack-ness, but rather calculate it, we must
presume a size. Ho hum this interface is lossy. */
current->sas_ss_sp = (unsigned long)ss_sp - SIGSTKSZ;
current->sas_ss_size = SIGSTKSZ;
}
if (uoss) {
error = -EFAULT;
if (! access_ok(VERIFY_WRITE, uoss, sizeof(*uoss))
|| __put_user(oss_sp, &uoss->ss_sp)
|| __put_user(oss_os, &uoss->ss_onstack))
goto out;
}
error = 0;
out:
return error;
}
/*
* The Linux kernel isn't good at returning values that look
* like negative longs (they are mistaken as error values).
* Until that is fixed, we need this little workaround for
* create_module() because it's one of the few system calls
* that return kernel addresses (which are negative).
*/
asmlinkage unsigned long alpha_create_module(char *module_name, unsigned long size,
int a3, int a4, int a5, int a6,
struct pt_regs regs)
{
asmlinkage unsigned long sys_create_module(char *, unsigned long);
long retval;
lock_kernel();
retval = sys_create_module(module_name, size);
/*
* we get either a module address or an error number,
* and we know the error number is a small negative
* number, while the address is always negative but
* much larger.
*/
if (retval + 1000 > 0)
goto out;
/* tell entry.S:syscall_error that this is NOT an error: */
regs.r0 = 0;
out:
unlock_kernel();
return retval;
}
asmlinkage long osf_sysinfo(int command, char *buf, long count)
{
static char * sysinfo_table[] = {
system_utsname.sysname,
system_utsname.nodename,
system_utsname.release,
system_utsname.version,
system_utsname.machine,
"alpha", /* instruction set architecture */
"dummy", /* hardware serial number */
"dummy", /* hardware manufacturer */
"dummy", /* secure RPC domain */
};
unsigned long offset;
char *res;
long len, err = -EINVAL;
offset = command-1;
if (offset >= sizeof(sysinfo_table)/sizeof(char *)) {
/* Digital UNIX has a few unpublished interfaces here */
printk("sysinfo(%d)", command);
goto out;
}
down_read(&uts_sem);
res = sysinfo_table[offset];
len = strlen(res)+1;
if (len > count)
len = count;
if (copy_to_user(buf, res, len))
err = -EFAULT;
else
err = 0;
up_read(&uts_sem);
out:
return err;
}
asmlinkage unsigned long osf_getsysinfo(unsigned long op, void *buffer,
unsigned long nbytes,
int *start, void *arg)
{
unsigned long w;
struct percpu_struct *cpu;
switch (op) {
case GSI_IEEE_FP_CONTROL:
/* Return current software fp control & status bits. */
/* Note that DU doesn't verify available space here. */
w = current->thread.flags & IEEE_SW_MASK;
w = swcr_update_status(w, rdfpcr());
if (put_user(w, (unsigned long *) buffer))
return -EFAULT;
return 0;
case GSI_IEEE_STATE_AT_SIGNAL:
/*
* Not sure anybody will ever use this weird stuff. These
* ops can be used (under OSF/1) to set the fpcr that should
* be used when a signal handler starts executing.
*/
break;
case GSI_UACPROC:
if (nbytes < sizeof(unsigned int))
return -EINVAL;
w = (current->thread.flags >> UAC_SHIFT) & UAC_BITMASK;
if (put_user(w, (unsigned int *)buffer))
return -EFAULT;
return 1;
case GSI_PROC_TYPE:
if (nbytes < sizeof(unsigned long))
return -EINVAL;
cpu = (struct percpu_struct*)
((char*)hwrpb + hwrpb->processor_offset);
w = cpu->type;
if (put_user(w, (unsigned long *)buffer))
return -EFAULT;
return 1;
case GSI_GET_HWRPB:
if (nbytes < sizeof(*hwrpb))
return -EINVAL;
if (copy_to_user(buffer, hwrpb, nbytes) != 0)
return -EFAULT;
return 1;
default:
break;
}
return -EOPNOTSUPP;
}
asmlinkage unsigned long osf_setsysinfo(unsigned long op, void *buffer,
unsigned long nbytes,
int *start, void *arg)
{
switch (op) {
case SSI_IEEE_FP_CONTROL: {
unsigned long swcr, fpcr;
/*
* Alpha Architecture Handbook 4.7.7.3:
* To be fully IEEE compiant, we must track the current IEEE
* exception state in software, because spurrious bits can be
* set in the trap shadow of a software-complete insn.
*/
/* Update softare trap enable bits. */
if (get_user(swcr, (unsigned long *)buffer))
return -EFAULT;
current->thread.flags &= ~IEEE_SW_MASK;
current->thread.flags |= swcr & IEEE_SW_MASK;
/* Update the real fpcr. */
fpcr = rdfpcr();
fpcr &= FPCR_DYN_MASK;
fpcr |= ieee_swcr_to_fpcr(swcr);
wrfpcr(fpcr);
/* If any exceptions are now unmasked, send a signal. */
if (((swcr & IEEE_STATUS_MASK)
>> IEEE_STATUS_TO_EXCSUM_SHIFT) & swcr) {
send_sig(SIGFPE, current, 1);
}
return 0;
}
case SSI_IEEE_STATE_AT_SIGNAL:
case SSI_IEEE_IGNORE_STATE_AT_SIGNAL:
/*
* Not sure anybody will ever use this weird stuff. These
* ops can be used (under OSF/1) to set the fpcr that should
* be used when a signal handler starts executing.
*/
break;
case SSI_NVPAIRS: {
unsigned long v, w, i;
for (i = 0; i < nbytes; ++i) {
if (get_user(v, 2*i + (unsigned int *)buffer))
return -EFAULT;
if (get_user(w, 2*i + 1 + (unsigned int *)buffer))
return -EFAULT;
switch (v) {
case SSIN_UACPROC:
current->thread.flags &=
~(UAC_BITMASK << UAC_SHIFT);
current->thread.flags |=
(w & UAC_BITMASK) << UAC_SHIFT;
break;
default:
return -EOPNOTSUPP;
}
}
return 0;
}
default:
break;
}
return -EOPNOTSUPP;
}
/* Translations due to the fact that OSF's time_t is an int. Which
affects all sorts of things, like timeval and itimerval. */
extern struct timezone sys_tz;
extern int do_sys_settimeofday(struct timeval *tv, struct timezone *tz);
extern int do_getitimer(int which, struct itimerval *value);
extern int do_setitimer(int which, struct itimerval *, struct itimerval *);
asmlinkage int sys_utimes(char *, struct timeval *);
extern int do_adjtimex(struct timex *);
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)));
}
asmlinkage int osf_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 int osf_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(*tz)))
return -EFAULT;
}
return do_sys_settimeofday(tv ? &ktv : NULL, tz ? &ktz : NULL);
}
asmlinkage int osf_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;
}
asmlinkage int osf_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 int osf_utimes(const char *filename, struct timeval32 *tvs)
{
char *kfilename;
struct timeval ktvs[2];
mm_segment_t old_fs;
int ret;
kfilename = getname(filename);
if (IS_ERR(kfilename))
return PTR_ERR(kfilename);
if (tvs) {
if (get_tv32(&ktvs[0], &tvs[0]) ||
get_tv32(&ktvs[1], &tvs[1]))
return -EFAULT;
}
old_fs = get_fs();
set_fs(KERNEL_DS);
ret = sys_utimes(kfilename, tvs ? ktvs : 0);
set_fs(old_fs);
putname(kfilename);
return ret;
}
#define MAX_SELECT_SECONDS \
((unsigned long) (MAX_SCHEDULE_TIMEOUT / HZ)-1)
asmlinkage int
osf_select(int n, fd_set *inp, fd_set *outp, fd_set *exp,
struct timeval32 *tvp)
{
fd_set_bits fds;
char *bits;
size_t size;
unsigned long timeout;
int ret;
timeout = MAX_SCHEDULE_TIMEOUT;
if (tvp) {
time_t sec, usec;
if ((ret = verify_area(VERIFY_READ, tvp, sizeof(*tvp)))
|| (ret = __get_user(sec, &tvp->tv_sec))
|| (ret = __get_user(usec, &tvp->tv_usec)))
goto out_nofds;
ret = -EINVAL;
if (sec < 0 || usec < 0)
goto out_nofds;
if ((unsigned long) sec < MAX_SELECT_SECONDS) {
timeout = (usec + 1000000/HZ - 1) / (1000000/HZ);
timeout += sec * (unsigned long) HZ;
}
}
ret = -EINVAL;
if (n < 0 || n > current->files->max_fdset)
goto out_nofds;
/*
* 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_bits, fds.in)) ||
(ret = get_fd_set(n, outp->fds_bits, fds.out)) ||
(ret = get_fd_set(n, exp->fds_bits, 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);
/* OSF does not copy back the remaining time. */
if (ret < 0)
goto out;
if (!ret) {
ret = -ERESTARTNOHAND;
if (signal_pending(current))
goto out;
ret = 0;
}
set_fd_set(n, inp->fds_bits, fds.res_in);
set_fd_set(n, outp->fds_bits, fds.res_out);
set_fd_set(n, exp->fds_bits, fds.res_ex);
out:
kfree(bits);
out_nofds:
return ret;
}
struct rusage32 {
struct timeval32 ru_utime; /* user time used */
struct timeval32 ru_stime; /* system time used */
long ru_maxrss; /* maximum resident set size */
long ru_ixrss; /* integral shared memory size */
long ru_idrss; /* integral unshared data size */
long ru_isrss; /* integral unshared stack size */
long ru_minflt; /* page reclaims */
long ru_majflt; /* page faults */
long ru_nswap; /* swaps */
long ru_inblock; /* block input operations */
long ru_oublock; /* block output operations */
long ru_msgsnd; /* messages sent */
long ru_msgrcv; /* messages received */
long ru_nsignals; /* signals received */
long ru_nvcsw; /* voluntary context switches */
long ru_nivcsw; /* involuntary " */
};
asmlinkage int osf_getrusage(int who, struct rusage32 *ru)
{
struct rusage32 r;
if (who != RUSAGE_SELF && who != RUSAGE_CHILDREN)
return -EINVAL;
memset(&r, 0, sizeof(r));
switch (who) {
case RUSAGE_SELF:
r.ru_utime.tv_sec = CT_TO_SECS(current->times.tms_utime);
r.ru_utime.tv_usec = CT_TO_USECS(current->times.tms_utime);
r.ru_stime.tv_sec = CT_TO_SECS(current->times.tms_stime);
r.ru_stime.tv_usec = CT_TO_USECS(current->times.tms_stime);
r.ru_minflt = current->min_flt;
r.ru_majflt = current->maj_flt;
r.ru_nswap = current->nswap;
break;
case RUSAGE_CHILDREN:
r.ru_utime.tv_sec = CT_TO_SECS(current->times.tms_cutime);
r.ru_utime.tv_usec = CT_TO_USECS(current->times.tms_cutime);
r.ru_stime.tv_sec = CT_TO_SECS(current->times.tms_cstime);
r.ru_stime.tv_usec = CT_TO_USECS(current->times.tms_cstime);
r.ru_minflt = current->cmin_flt;
r.ru_majflt = current->cmaj_flt;
r.ru_nswap = current->cnswap;
break;
default:
r.ru_utime.tv_sec = CT_TO_SECS(current->times.tms_utime +
current->times.tms_cutime);
r.ru_utime.tv_usec = CT_TO_USECS(current->times.tms_utime +
current->times.tms_cutime);
r.ru_stime.tv_sec = CT_TO_SECS(current->times.tms_stime +
current->times.tms_cstime);
r.ru_stime.tv_usec = CT_TO_USECS(current->times.tms_stime +
current->times.tms_cstime);
r.ru_minflt = current->min_flt + current->cmin_flt;
r.ru_majflt = current->maj_flt + current->cmaj_flt;
r.ru_nswap = current->nswap + current->cnswap;
break;
}
return copy_to_user(ru, &r, sizeof(r)) ? -EFAULT : 0;
}
asmlinkage int osf_wait4(pid_t pid, int *ustatus, int options,
struct rusage32 *ur)
{
if (!ur) {
return sys_wait4(pid, ustatus, options, NULL);
} else {
struct rusage r;
int ret, status;
mm_segment_t old_fs = get_fs();
set_fs (KERNEL_DS);
ret = sys_wait4(pid, &status, options, &r);
set_fs (old_fs);
if (!access_ok(VERIFY_WRITE, ur, sizeof(*ur)))
return -EFAULT;
__put_user(r.ru_utime.tv_sec, &ur->ru_utime.tv_sec);
__put_user(r.ru_utime.tv_usec, &ur->ru_utime.tv_usec);
__put_user(r.ru_stime.tv_sec, &ur->ru_stime.tv_sec);
__put_user(r.ru_stime.tv_usec, &ur->ru_stime.tv_usec);
__put_user(r.ru_maxrss, &ur->ru_maxrss);
__put_user(r.ru_ixrss, &ur->ru_ixrss);
__put_user(r.ru_idrss, &ur->ru_idrss);
__put_user(r.ru_isrss, &ur->ru_isrss);
__put_user(r.ru_minflt, &ur->ru_minflt);
__put_user(r.ru_majflt, &ur->ru_majflt);
__put_user(r.ru_nswap, &ur->ru_nswap);
__put_user(r.ru_inblock, &ur->ru_inblock);
__put_user(r.ru_oublock, &ur->ru_oublock);
__put_user(r.ru_msgsnd, &ur->ru_msgsnd);
__put_user(r.ru_msgrcv, &ur->ru_msgrcv);
__put_user(r.ru_nsignals, &ur->ru_nsignals);
__put_user(r.ru_nvcsw, &ur->ru_nvcsw);
if (__put_user(r.ru_nivcsw, &ur->ru_nivcsw))
return -EFAULT;
if (ustatus && put_user(status, ustatus))
return -EFAULT;
return ret;
}
}
/*
* I don't know what the parameters are: the first one
* seems to be a timeval pointer, and I suspect the second
* one is the time remaining.. Ho humm.. No documentation.
*/
asmlinkage int osf_usleep_thread(struct timeval32 *sleep, struct timeval32 *remain)
{
struct timeval tmp;
unsigned long ticks;
if (get_tv32(&tmp, sleep))
goto fault;
ticks = tmp.tv_usec;
ticks = (ticks + (1000000 / HZ) - 1) / (1000000 / HZ);
ticks += tmp.tv_sec * HZ;
current->state = TASK_INTERRUPTIBLE;
ticks = schedule_timeout(ticks);
if (remain) {
tmp.tv_sec = ticks / HZ;
tmp.tv_usec = ticks % HZ;
if (put_tv32(remain, &tmp))
goto fault;
}
return 0;
fault:
return -EFAULT;
}
struct timex32 {
unsigned int modes; /* mode selector */
long offset; /* time offset (usec) */
long freq; /* frequency offset (scaled ppm) */
long maxerror; /* maximum error (usec) */
long esterror; /* estimated error (usec) */
int status; /* clock command/status */
long constant; /* pll time constant */
long precision; /* clock precision (usec) (read only) */
long tolerance; /* clock frequency tolerance (ppm)
* (read only)
*/
struct timeval32 time; /* (read only) */
long tick; /* (modified) usecs between clock ticks */
long ppsfreq; /* pps frequency (scaled ppm) (ro) */
long jitter; /* pps jitter (us) (ro) */
int shift; /* interval duration (s) (shift) (ro) */
long stabil; /* pps stability (scaled ppm) (ro) */
long jitcnt; /* jitter limit exceeded (ro) */
long calcnt; /* calibration intervals (ro) */
long errcnt; /* calibration errors (ro) */
long stbcnt; /* stability limit exceeded (ro) */
int :32; int :32; int :32; int :32;
int :32; int :32; int :32; int :32;
int :32; int :32; int :32; int :32;
};
asmlinkage int sys_old_adjtimex(struct timex32 *txc_p)
{
struct timex txc;
int ret;
/* copy relevant bits of struct timex. */
if (copy_from_user(&txc, txc_p, offsetof(struct timex32, time)) ||
copy_from_user(&txc.tick, &txc_p->tick, sizeof(struct timex32) -
offsetof(struct timex32, time)))
return -EFAULT;
ret = do_adjtimex(&txc);
if (ret < 0)
return ret;
/* copy back to timex32 */
if (copy_to_user(txc_p, &txc, offsetof(struct timex32, time)) ||
(copy_to_user(&txc_p->tick, &txc.tick, sizeof(struct timex32) -
offsetof(struct timex32, tick))) ||
(put_tv32(&txc_p->time, &txc.time)))
return -EFAULT;
return ret;
}
/* Get an address range which is currently unmapped. Similar to the
generic version except that we know how to honor ADDR_LIMIT_32BIT. */
static unsigned long
arch_get_unmapped_area_1(unsigned long addr, unsigned long len,
unsigned long limit)
{
struct vm_area_struct *vma = find_vma(current->mm, addr);
while (1) {
/* At this point: (!vma || addr < vma->vm_end). */
if (limit - len < addr)
return -ENOMEM;
if (!vma || addr + len <= vma->vm_start)
return addr;
addr = vma->vm_end;
vma = vma->vm_next;
}
}
unsigned long
arch_get_unmapped_area(struct file *filp, unsigned long addr,
unsigned long len, unsigned long pgoff,
unsigned long flags)
{
unsigned long limit;
/* "32 bit" actually means 31 bit, since pointers sign extend. */
if (current->personality & ADDR_LIMIT_32BIT)
limit = 0x80000000;
else
limit = TASK_SIZE;
if (len > limit)
return -ENOMEM;
/* First, see if the given suggestion fits.
The OSF/1 loader (/sbin/loader) relies on us returning an
address larger than the requested if one exists, which is
a terribly broken way to program.
That said, I can see the use in being able to suggest not
merely specific addresses, but regions of memory -- perhaps
this feature should be incorporated into all ports? */
if (addr) {
addr = arch_get_unmapped_area_1 (PAGE_ALIGN(addr), len, limit);
if (addr != -ENOMEM)
return addr;
}
/* Next, try allocating at TASK_UNMAPPED_BASE. */
addr = arch_get_unmapped_area_1 (PAGE_ALIGN(TASK_UNMAPPED_BASE),
len, limit);
if (addr != -ENOMEM)
return addr;
/* Finally, try allocating in low memory. */
addr = arch_get_unmapped_area_1 (PAGE_SIZE, len, limit);
return addr;
}
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