/* * 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 #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include extern int do_pipe(int *); /* * 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 offsetof (struct osf_dirent, d_name) #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 __user *dirent; long __user *basep; unsigned 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 __user *dirent; struct osf_dirent_callback *buf = (struct osf_dirent_callback *) __buf; unsigned int reclen = ROUND_UP(NAME_OFFSET + namlen + 1); buf->error = -EINVAL; /* only used if we fail */ if (reclen > buf->count) return -EINVAL; if (buf->basep) { if (put_user(offset, buf->basep)) return -EFAULT; buf->basep = NULL; } dirent = buf->dirent; put_user(ino, &dirent->d_ino); put_user(namlen, &dirent->d_namlen); put_user(reclen, &dirent->d_reclen); if (copy_to_user(dirent->d_name, name, namlen) || put_user(0, dirent->d_name + namlen)) return -EFAULT; dirent = (void __user *)dirent + reclen; buf->dirent = dirent; buf->count -= reclen; return 0; } asmlinkage int osf_getdirentries(unsigned int fd, struct osf_dirent __user *dirent, unsigned int count, long __user *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 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; }; static int linux_to_osf_statfs(struct kstatfs *linux_stat, struct osf_statfs __user *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 */ tmp_stat.f_fsize = linux_stat->f_frsize; 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 __user *buffer, unsigned long bufsiz) { struct kstatfs linux_stat; int error = vfs_statfs(dentry, &linux_stat); if (!error) error = linux_to_osf_statfs(&linux_stat, buffer, bufsiz); return error; } asmlinkage int osf_statfs(char __user *path, struct osf_statfs __user *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 __user *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 __user *devname; int flags; uid_t exroot; }; struct cdfs_args { char __user *devname; int flags; uid_t exroot; /* This has lots more here, which Linux handles with the option block but I'm too lazy to do the translation into ASCII. */ }; struct procfs_args { char __user *devname; int flags; uid_t exroot; }; /* * We can't actually handle ufs yet, so we translate UFS mounts to * ext2fs mounts. I wouldn't mind a UFS filesystem, but the UFS * layout is so braindead it's a major headache doing it. * * Just how long ago was it written? OTOH our UFS driver may be still * unhappy with OSF UFS. [CHECKME] */ static int osf_ufs_mount(char *dirname, struct ufs_args __user *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 __user *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 __user *args, int flags) { struct procfs_args tmp; if (copy_from_user(&tmp, args, sizeof(tmp))) return -EFAULT; return do_mount("", dirname, "proc", flags, NULL); } asmlinkage int osf_mount(unsigned long typenr, char __user *path, int flag, void __user *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, data, flag); break; case 6: retval = osf_cdfs_mount(name, data, flag); break; case 9: retval = osf_procfs_mount(name, data, flag); break; default: printk("osf_mount(%ld, %x)\n", typenr, flag); } putname(name); out: unlock_kernel(); return retval; } asmlinkage int osf_utsname(char __user *name) { int error; down_read(&uts_sem); error = -EFAULT; if (copy_to_user(name + 0, utsname()->sysname, 32)) goto out; if (copy_to_user(name + 32, utsname()->nodename, 32)) goto out; if (copy_to_user(name + 64, utsname()->release, 32)) goto out; if (copy_to_user(name + 96, utsname()->version, 32)) goto out; if (copy_to_user(name + 128, utsname()->machine, 32)) goto out; error = 0; out: up_read(&uts_sem); return error; } asmlinkage unsigned long sys_getpagesize(void) { return PAGE_SIZE; } asmlinkage unsigned long sys_getdtablesize(void) { return NR_OPEN; } /* * For compatibility with OSF/1 only. Use utsname(2) instead. */ asmlinkage int osf_getdomainname(char __user *name, int namelen) { unsigned len; int i; if (!access_ok(VERIFY_WRITE, name, namelen)) return -EFAULT; len = namelen; if (namelen > 32) len = 32; down_read(&uts_sem); for (i = 0; i < len; ++i) { __put_user(utsname()->domainname[i], name + i); if (utsname()->domainname[i] == '\0') break; } up_read(&uts_sem); return 0; } /* * The following stuff should move into a header file should it ever * be labeled "officially supported." Right now, there is just enough * support to avoid applications (such as tar) printing error * messages. The attributes are not really implemented. */ /* * Values for Property list entry flag */ #define PLE_PROPAGATE_ON_COPY 0x1 /* cp(1) will copy entry by default */ #define PLE_FLAG_MASK 0x1 /* Valid flag values */ #define PLE_FLAG_ALL -1 /* All flag value */ struct proplistname_args { unsigned int pl_mask; unsigned int pl_numnames; char **pl_names; }; union pl_args { struct setargs { char __user *path; long follow; long nbytes; char __user *buf; } set; struct fsetargs { long fd; long nbytes; char __user *buf; } fset; struct getargs { char __user *path; long follow; struct proplistname_args __user *name_args; long nbytes; char __user *buf; int __user *min_buf_size; } get; struct fgetargs { long fd; struct proplistname_args __user *name_args; long nbytes; char __user *buf; int __user *min_buf_size; } fget; struct delargs { char __user *path; long follow; struct proplistname_args __user *name_args; } del; struct fdelargs { long fd; struct proplistname_args __user *name_args; } fdel; }; enum pl_code { PL_SET = 1, PL_FSET = 2, PL_GET = 3, PL_FGET = 4, PL_DEL = 5, PL_FDEL = 6 }; asmlinkage long osf_proplist_syscall(enum pl_code code, union pl_args __user *args) { long error; int __user *min_buf_size_ptr; lock_kernel(); switch (code) { case PL_SET: if (get_user(error, &args->set.nbytes)) error = -EFAULT; break; case PL_FSET: if (get_user(error, &args->fset.nbytes)) error = -EFAULT; break; case PL_GET: error = get_user(min_buf_size_ptr, &args->get.min_buf_size); if (error) break; error = put_user(0, min_buf_size_ptr); break; case PL_FGET: error = get_user(min_buf_size_ptr, &args->fget.min_buf_size); if (error) break; error = put_user(0, min_buf_size_ptr); break; case PL_DEL: case PL_FDEL: error = 0; break; default: error = -EOPNOTSUPP; break; }; unlock_kernel(); return error; } asmlinkage int osf_sigstack(struct sigstack __user *uss, struct sigstack __user *uoss) { unsigned long usp = rdusp(); unsigned long oss_sp = current->sas_ss_sp + current->sas_ss_size; unsigned long oss_os = on_sig_stack(usp); int error; if (uss) { void __user *ss_sp; error = -EFAULT; if (get_user(ss_sp, &uss->ss_sp)) goto out; /* If the current stack was set with sigaltstack, don't swap stacks while we are on it. */ error = -EPERM; if (current->sas_ss_sp && on_sig_stack(usp)) goto out; /* Since we don't know the extent of the stack, and we don't track onstack-ness, but rather calculate it, we must presume a size. Ho hum this interface is lossy. */ current->sas_ss_sp = (unsigned long)ss_sp - SIGSTKSZ; current->sas_ss_size = SIGSTKSZ; } if (uoss) { error = -EFAULT; if (! access_ok(VERIFY_WRITE, uoss, sizeof(*uoss)) || __put_user(oss_sp, &uoss->ss_sp) || __put_user(oss_os, &uoss->ss_onstack)) goto out; } error = 0; out: return error; } asmlinkage long osf_sysinfo(int command, char __user *buf, long count) { char *sysinfo_table[] = { utsname()->sysname, utsname()->nodename, utsname()->release, utsname()->version, utsname()->machine, "alpha", /* instruction set architecture */ "dummy", /* hardware serial number */ "dummy", /* hardware manufacturer */ "dummy", /* secure RPC domain */ }; unsigned long offset; char *res; long len, err = -EINVAL; offset = command-1; if (offset >= ARRAY_SIZE(sysinfo_table)) { /* Digital UNIX has a few unpublished interfaces here */ printk("sysinfo(%d)", command); goto out; } down_read(&uts_sem); res = sysinfo_table[offset]; len = strlen(res)+1; if (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 __user *buffer, unsigned long nbytes, int __user *start, void __user *arg) { unsigned long w; struct percpu_struct *cpu; switch (op) { case GSI_IEEE_FP_CONTROL: /* Return current software fp control & status bits. */ /* Note that DU doesn't verify available space here. */ w = current_thread_info()->ieee_state & IEEE_SW_MASK; w = swcr_update_status(w, rdfpcr()); if (put_user(w, (unsigned long __user *) buffer)) return -EFAULT; return 0; case GSI_IEEE_STATE_AT_SIGNAL: /* * Not sure anybody will ever use this weird stuff. These * ops can be used (under OSF/1) to set the fpcr that should * be used when a signal handler starts executing. */ break; case GSI_UACPROC: if (nbytes < sizeof(unsigned int)) return -EINVAL; w = (current_thread_info()->flags >> UAC_SHIFT) & UAC_BITMASK; if (put_user(w, (unsigned int __user *)buffer)) return -EFAULT; return 1; case GSI_PROC_TYPE: if (nbytes < sizeof(unsigned long)) return -EINVAL; cpu = (struct percpu_struct*) ((char*)hwrpb + hwrpb->processor_offset); w = cpu->type; if (put_user(w, (unsigned long __user*)buffer)) return -EFAULT; return 1; case GSI_GET_HWRPB: if (nbytes < sizeof(*hwrpb)) return -EINVAL; if (copy_to_user(buffer, hwrpb, nbytes) != 0) return -EFAULT; return 1; default: break; } return -EOPNOTSUPP; } asmlinkage unsigned long osf_setsysinfo(unsigned long op, void __user *buffer, unsigned long nbytes, int __user *start, void __user *arg) { switch (op) { case SSI_IEEE_FP_CONTROL: { unsigned long swcr, fpcr; unsigned int *state; /* * Alpha Architecture Handbook 4.7.7.3: * To be fully IEEE compiant, we must track the current IEEE * exception state in software, because spurrious bits can be * set in the trap shadow of a software-complete insn. */ if (get_user(swcr, (unsigned long __user *)buffer)) return -EFAULT; state = ¤t_thread_info()->ieee_state; /* Update softare trap enable bits. */ *state = (*state & ~IEEE_SW_MASK) | (swcr & IEEE_SW_MASK); /* Update the real fpcr. */ fpcr = rdfpcr() & FPCR_DYN_MASK; fpcr |= ieee_swcr_to_fpcr(swcr); wrfpcr(fpcr); return 0; } case SSI_IEEE_RAISE_EXCEPTION: { unsigned long exc, swcr, fpcr, fex; unsigned int *state; if (get_user(exc, (unsigned long __user *)buffer)) return -EFAULT; state = ¤t_thread_info()->ieee_state; exc &= IEEE_STATUS_MASK; /* Update softare trap enable bits. */ swcr = (*state & IEEE_SW_MASK) | exc; *state |= exc; /* Update the real fpcr. */ fpcr = rdfpcr(); fpcr |= ieee_swcr_to_fpcr(swcr); wrfpcr(fpcr); /* If any exceptions set by this call, and are unmasked, send a signal. Old exceptions are not signaled. */ fex = (exc >> IEEE_STATUS_TO_EXCSUM_SHIFT) & swcr; if (fex) { siginfo_t info; int si_code = 0; if (fex & IEEE_TRAP_ENABLE_DNO) si_code = FPE_FLTUND; if (fex & IEEE_TRAP_ENABLE_INE) si_code = FPE_FLTRES; if (fex & IEEE_TRAP_ENABLE_UNF) si_code = FPE_FLTUND; if (fex & IEEE_TRAP_ENABLE_OVF) si_code = FPE_FLTOVF; if (fex & IEEE_TRAP_ENABLE_DZE) si_code = FPE_FLTDIV; if (fex & IEEE_TRAP_ENABLE_INV) si_code = FPE_FLTINV; info.si_signo = SIGFPE; info.si_errno = 0; info.si_code = si_code; info.si_addr = NULL; /* FIXME */ send_sig_info(SIGFPE, &info, current); } return 0; } case SSI_IEEE_STATE_AT_SIGNAL: case SSI_IEEE_IGNORE_STATE_AT_SIGNAL: /* * Not sure anybody will ever use this weird stuff. These * ops can be used (under OSF/1) to set the fpcr that should * be used when a signal handler starts executing. */ break; case SSI_NVPAIRS: { unsigned long v, w, i; unsigned int old, new; for (i = 0; i < nbytes; ++i) { if (get_user(v, 2*i + (unsigned int __user *)buffer)) return -EFAULT; if (get_user(w, 2*i + 1 + (unsigned int __user *)buffer)) return -EFAULT; switch (v) { case SSIN_UACPROC: again: old = current_thread_info()->flags; new = old & ~(UAC_BITMASK << UAC_SHIFT); new = new | (w & UAC_BITMASK) << UAC_SHIFT; if (cmpxchg(¤t_thread_info()->flags, old, new) != old) goto again; 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; struct timeval32 { int tv_sec, tv_usec; }; struct itimerval32 { struct timeval32 it_interval; struct timeval32 it_value; }; static inline long get_tv32(struct timeval *o, struct timeval32 __user *i) { return (!access_ok(VERIFY_READ, i, sizeof(*i)) || (__get_user(o->tv_sec, &i->tv_sec) | __get_user(o->tv_usec, &i->tv_usec))); } static inline long put_tv32(struct timeval32 __user *o, struct timeval *i) { return (!access_ok(VERIFY_WRITE, o, sizeof(*o)) || (__put_user(i->tv_sec, &o->tv_sec) | __put_user(i->tv_usec, &o->tv_usec))); } static inline long get_it32(struct itimerval *o, struct itimerval32 __user *i) { return (!access_ok(VERIFY_READ, i, sizeof(*i)) || (__get_user(o->it_interval.tv_sec, &i->it_interval.tv_sec) | __get_user(o->it_interval.tv_usec, &i->it_interval.tv_usec) | __get_user(o->it_value.tv_sec, &i->it_value.tv_sec) | __get_user(o->it_value.tv_usec, &i->it_value.tv_usec))); } static inline long put_it32(struct itimerval32 __user *o, struct itimerval *i) { return (!access_ok(VERIFY_WRITE, o, sizeof(*o)) || (__put_user(i->it_interval.tv_sec, &o->it_interval.tv_sec) | __put_user(i->it_interval.tv_usec, &o->it_interval.tv_usec) | __put_user(i->it_value.tv_sec, &o->it_value.tv_sec) | __put_user(i->it_value.tv_usec, &o->it_value.tv_usec))); } static inline void jiffies_to_timeval32(unsigned long jiffies, struct timeval32 *value) { value->tv_usec = (jiffies % HZ) * (1000000L / HZ); value->tv_sec = jiffies / HZ; } asmlinkage int osf_gettimeofday(struct timeval32 __user *tv, struct timezone __user *tz) { if (tv) { struct timeval ktv; do_gettimeofday(&ktv); if (put_tv32(tv, &ktv)) return -EFAULT; } if (tz) { if (copy_to_user(tz, &sys_tz, sizeof(sys_tz))) return -EFAULT; } return 0; } asmlinkage int osf_settimeofday(struct timeval32 __user *tv, struct timezone __user *tz) { struct timespec kts; struct timezone ktz; if (tv) { if (get_tv32((struct timeval *)&kts, tv)) return -EFAULT; } if (tz) { if (copy_from_user(&ktz, tz, sizeof(*tz))) return -EFAULT; } kts.tv_nsec *= 1000; return do_sys_settimeofday(tv ? &kts : NULL, tz ? &ktz : NULL); } asmlinkage int osf_getitimer(int which, struct itimerval32 __user *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 __user *in, struct itimerval32 __user *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(char __user *filename, struct timeval32 __user *tvs) { struct timeval ktvs[2]; if (tvs) { if (get_tv32(&ktvs[0], &tvs[0]) || get_tv32(&ktvs[1], &tvs[1])) return -EFAULT; } return do_utimes(AT_FDCWD, filename, tvs ? ktvs : NULL); } #define MAX_SELECT_SECONDS \ ((unsigned long) (MAX_SCHEDULE_TIMEOUT / HZ)-1) asmlinkage int osf_select(int n, fd_set __user *inp, fd_set __user *outp, fd_set __user *exp, struct timeval32 __user *tvp) { fd_set_bits fds; char *bits; size_t size; long timeout; int ret = -EINVAL; struct fdtable *fdt; int max_fdset; timeout = MAX_SCHEDULE_TIMEOUT; if (tvp) { time_t sec, usec; if (!access_ok(VERIFY_READ, tvp, sizeof(*tvp)) || __get_user(sec, &tvp->tv_sec) || __get_user(usec, &tvp->tv_usec)) { ret = -EFAULT; goto out_nofds; } 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; } } rcu_read_lock(); fdt = files_fdtable(current->files); max_fdset = fdt->max_fdset; rcu_read_unlock(); if (n < 0 || n > 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; } if (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)) ret = -EFAULT; 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 __user *ru) { struct rusage32 r; if (who != RUSAGE_SELF && who != RUSAGE_CHILDREN) return -EINVAL; memset(&r, 0, sizeof(r)); switch (who) { case RUSAGE_SELF: jiffies_to_timeval32(current->utime, &r.ru_utime); jiffies_to_timeval32(current->stime, &r.ru_stime); r.ru_minflt = current->min_flt; r.ru_majflt = current->maj_flt; break; case RUSAGE_CHILDREN: jiffies_to_timeval32(current->signal->cutime, &r.ru_utime); jiffies_to_timeval32(current->signal->cstime, &r.ru_stime); r.ru_minflt = current->signal->cmin_flt; r.ru_majflt = current->signal->cmaj_flt; break; } return copy_to_user(ru, &r, sizeof(r)) ? -EFAULT : 0; } asmlinkage long osf_wait4(pid_t pid, int __user *ustatus, int options, struct rusage32 __user *ur) { struct rusage r; long ret, err; mm_segment_t old_fs; if (!ur) return sys_wait4(pid, ustatus, options, NULL); old_fs = get_fs(); set_fs (KERNEL_DS); ret = sys_wait4(pid, ustatus, options, (struct rusage __user *) &r); set_fs (old_fs); if (!access_ok(VERIFY_WRITE, ur, sizeof(*ur))) return -EFAULT; err = 0; err |= __put_user(r.ru_utime.tv_sec, &ur->ru_utime.tv_sec); err |= __put_user(r.ru_utime.tv_usec, &ur->ru_utime.tv_usec); err |= __put_user(r.ru_stime.tv_sec, &ur->ru_stime.tv_sec); err |= __put_user(r.ru_stime.tv_usec, &ur->ru_stime.tv_usec); err |= __put_user(r.ru_maxrss, &ur->ru_maxrss); err |= __put_user(r.ru_ixrss, &ur->ru_ixrss); err |= __put_user(r.ru_idrss, &ur->ru_idrss); err |= __put_user(r.ru_isrss, &ur->ru_isrss); err |= __put_user(r.ru_minflt, &ur->ru_minflt); err |= __put_user(r.ru_majflt, &ur->ru_majflt); err |= __put_user(r.ru_nswap, &ur->ru_nswap); err |= __put_user(r.ru_inblock, &ur->ru_inblock); err |= __put_user(r.ru_oublock, &ur->ru_oublock); err |= __put_user(r.ru_msgsnd, &ur->ru_msgsnd); err |= __put_user(r.ru_msgrcv, &ur->ru_msgrcv); err |= __put_user(r.ru_nsignals, &ur->ru_nsignals); err |= __put_user(r.ru_nvcsw, &ur->ru_nvcsw); err |= __put_user(r.ru_nivcsw, &ur->ru_nivcsw); return err ? err : ret; } /* * I don't know what the parameters are: the first one * seems to be a timeval pointer, and I suspect the second * one is the time remaining.. Ho humm.. No documentation. */ asmlinkage int osf_usleep_thread(struct timeval32 __user *sleep, struct timeval32 __user *remain) { struct timeval tmp; unsigned long ticks; if (get_tv32(&tmp, sleep)) goto fault; ticks = timeval_to_jiffies(&tmp); ticks = schedule_timeout_interruptible(ticks); if (remain) { jiffies_to_timeval(ticks, &tmp); if (put_tv32(remain, &tmp)) goto fault; } return 0; fault: return -EFAULT; } struct timex32 { unsigned int modes; /* mode selector */ long offset; /* time offset (usec) */ long freq; /* frequency offset (scaled ppm) */ long maxerror; /* maximum error (usec) */ long esterror; /* estimated error (usec) */ int status; /* clock command/status */ long constant; /* pll time constant */ long precision; /* clock precision (usec) (read only) */ long tolerance; /* clock frequency tolerance (ppm) * (read only) */ struct timeval32 time; /* (read only) */ long tick; /* (modified) usecs between clock ticks */ long ppsfreq; /* pps frequency (scaled ppm) (ro) */ long jitter; /* pps jitter (us) (ro) */ int shift; /* interval duration (s) (shift) (ro) */ long stabil; /* pps stability (scaled ppm) (ro) */ long jitcnt; /* jitter limit exceeded (ro) */ long calcnt; /* calibration intervals (ro) */ long errcnt; /* calibration errors (ro) */ long stbcnt; /* stability limit exceeded (ro) */ int :32; int :32; int :32; int :32; int :32; int :32; int :32; int :32; int :32; int :32; int :32; int :32; }; asmlinkage int sys_old_adjtimex(struct timex32 __user *txc_p) { struct timex txc; int ret; /* copy relevant bits of struct timex. */ if (copy_from_user(&txc, txc_p, offsetof(struct timex32, time)) || copy_from_user(&txc.tick, &txc_p->tick, sizeof(struct timex32) - offsetof(struct timex32, 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 != (unsigned long) -ENOMEM) return addr; } /* Next, try allocating at TASK_UNMAPPED_BASE. */ addr = arch_get_unmapped_area_1 (PAGE_ALIGN(TASK_UNMAPPED_BASE), len, limit); if (addr != (unsigned long) -ENOMEM) return addr; /* Finally, try allocating in low memory. */ addr = arch_get_unmapped_area_1 (PAGE_SIZE, len, limit); return addr; } #ifdef CONFIG_OSF4_COMPAT /* Clear top 32 bits of iov_len in the user's buffer for compatibility with old versions of OSF/1 where iov_len was defined as int. */ static int osf_fix_iov_len(const struct iovec __user *iov, unsigned long count) { unsigned long i; for (i = 0 ; i < count ; i++) { int __user *iov_len_high = (int __user *)&iov[i].iov_len + 1; if (put_user(0, iov_len_high)) return -EFAULT; } return 0; } asmlinkage ssize_t osf_readv(unsigned long fd, const struct iovec __user * vector, unsigned long count) { if (unlikely(personality(current->personality) == PER_OSF4)) if (osf_fix_iov_len(vector, count)) return -EFAULT; return sys_readv(fd, vector, count); } asmlinkage ssize_t osf_writev(unsigned long fd, const struct iovec __user * vector, unsigned long count) { if (unlikely(personality(current->personality) == PER_OSF4)) if (osf_fix_iov_len(vector, count)) return -EFAULT; return sys_writev(fd, vector, count); } #endif