- 根目录:
- arch
- parisc
- hpux
- sys_hpux.c
/*
* Implements HPUX syscalls.
*
* Copyright (C) 1999 Matthew Wilcox <willy with parisc-linux.org>
* Copyright (C) 2000 Philipp Rumpf
* Copyright (C) 2000 John Marvin <jsm with parisc-linux.org>
* Copyright (C) 2000 Michael Ang <mang with subcarrier.org>
* Copyright (C) 2001 Nathan Neulinger <nneul at umr.edu>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <linux/capability.h>
#include <linux/file.h>
#include <linux/fs.h>
#include <linux/namei.h>
#include <linux/sched.h>
#include <linux/slab.h>
#include <linux/syscalls.h>
#include <linux/utsname.h>
#include <linux/vfs.h>
#include <linux/vmalloc.h>
#include <asm/errno.h>
#include <asm/pgalloc.h>
#include <asm/uaccess.h>
unsigned long hpux_brk(unsigned long addr)
{
/* Sigh. Looks like HP/UX libc relies on kernel bugs. */
return sys_brk(addr + PAGE_SIZE);
}
int hpux_sbrk(void)
{
return -ENOSYS;
}
/* Random other syscalls */
int hpux_nice(int priority_change)
{
return -ENOSYS;
}
int hpux_ptrace(void)
{
return -ENOSYS;
}
int hpux_wait(int __user *stat_loc)
{
return sys_waitpid(-1, stat_loc, 0);
}
int hpux_setpgrp(void)
{
return sys_setpgid(0,0);
}
int hpux_setpgrp3(void)
{
return hpux_setpgrp();
}
#define _SC_CPU_VERSION 10001
#define _SC_OPEN_MAX 4
#define CPU_PA_RISC1_1 0x210
int hpux_sysconf(int which)
{
switch (which) {
case _SC_CPU_VERSION:
return CPU_PA_RISC1_1;
case _SC_OPEN_MAX:
return INT_MAX;
default:
return -EINVAL;
}
}
/*****************************************************************************/
#define HPUX_UTSLEN 9
#define HPUX_SNLEN 15
struct hpux_utsname {
char sysname[HPUX_UTSLEN];
char nodename[HPUX_UTSLEN];
char release[HPUX_UTSLEN];
char version[HPUX_UTSLEN];
char machine[HPUX_UTSLEN];
char idnumber[HPUX_SNLEN];
} ;
struct hpux_ustat {
int32_t f_tfree; /* total free (daddr_t) */
u_int32_t f_tinode; /* total inodes free (ino_t) */
char f_fname[6]; /* filsys name */
char f_fpack[6]; /* filsys pack name */
u_int32_t f_blksize; /* filsys block size (int) */
};
/*
* HPUX's utssys() call. It's a collection of miscellaneous functions,
* alas, so there's no nice way of splitting them up.
*/
/* This function is called from hpux_utssys(); HP-UX implements
* ustat() as an option to utssys().
*
* Now, struct ustat on HP-UX is exactly the same as on Linux, except
* that it contains one addition field on the end, int32_t f_blksize.
* So, we could have written this function to just call the Linux
* sys_ustat(), (defined in linux/fs/super.c), and then just
* added this additional field to the user's structure. But I figure
* if we're gonna be digging through filesystem structures to get
* this, we might as well just do the whole enchilada all in one go.
*
* So, most of this function is almost identical to sys_ustat().
* I have placed comments at the few lines changed or added, to
* aid in porting forward if and when sys_ustat() is changed from
* its form in kernel 2.2.5.
*/
static int hpux_ustat(dev_t dev, struct hpux_ustat __user *ubuf)
{
struct hpux_ustat tmp; /* Changed to hpux_ustat */
struct kstatfs sbuf;
int err = vfs_ustat(dev, &sbuf);
if (err)
goto out;
memset(&tmp,0,sizeof(tmp));
tmp.f_tfree = (int32_t)sbuf.f_bfree;
tmp.f_tinode = (u_int32_t)sbuf.f_ffree;
tmp.f_blksize = (u_int32_t)sbuf.f_bsize; /* Added this line */
err = copy_to_user(ubuf, &tmp, sizeof(tmp)) ? -EFAULT : 0;
out:
return err;
}
/*
* Wrapper for hpux statfs call. At the moment, just calls the linux native one
* and ignores the extra fields at the end of the hpux statfs struct.
*
*/
typedef int32_t hpux_fsid_t[2]; /* file system ID type */
typedef uint16_t hpux_site_t;
struct hpux_statfs {
int32_t f_type; /* type of info, zero for now */
int32_t f_bsize; /* fundamental file system block size */
int32_t f_blocks; /* total blocks in file system */
int32_t f_bfree; /* free block in fs */
int32_t f_bavail; /* free blocks avail to non-superuser */
int32_t f_files; /* total file nodes in file system */
int32_t f_ffree; /* free file nodes in fs */
hpux_fsid_t f_fsid; /* file system ID */
int32_t f_magic; /* file system magic number */
int32_t f_featurebits; /* file system features */
int32_t f_spare[4]; /* spare for later */
hpux_site_t f_cnode; /* cluster node where mounted */
int16_t f_pad;
};
static int do_statfs_hpux(struct kstatfs *st, struct hpux_statfs __user *p)
{
struct hpux_statfs buf;
memset(&buf, 0, sizeof(buf));
buf.f_type = st->f_type;
buf.f_bsize = st->f_bsize;
buf.f_blocks = st->f_blocks;
buf.f_bfree = st->f_bfree;
buf.f_bavail = st->f_bavail;
buf.f_files = st->f_files;
buf.f_ffree = st->f_ffree;
buf.f_fsid[0] = st->f_fsid.val[0];
buf.f_fsid[1] = st->f_fsid.val[1];
if (copy_to_user(p, &buf, sizeof(buf)))
return -EFAULT;
return 0;
}
/* hpux statfs */
asmlinkage long hpux_statfs(const char __user *pathname,
struct hpux_statfs __user *buf)
{
struct kstatfs st;
int error = user_statfs(pathname, &st);
if (!error)
error = do_statfs_hpux(&st, buf);
return error;
}
asmlinkage long hpux_fstatfs(unsigned int fd, struct hpux_statfs __user * buf)
{
struct kstatfs st;
int error = fd_statfs(fd, &st);
if (!error)
error = do_statfs_hpux(&st, buf);
return error;
}
/* This function is called from hpux_utssys(); HP-UX implements
* uname() as an option to utssys().
*
* The form of this function is pretty much copied from sys_olduname(),
* defined in linux/arch/i386/kernel/sys_i386.c.
*/
/* TODO: Are these put_user calls OK? Should they pass an int?
* (I copied it from sys_i386.c like this.)
*/
static int hpux_uname(struct hpux_utsname __user *name)
{
int error;
if (!name)
return -EFAULT;
if (!access_ok(VERIFY_WRITE,name,sizeof(struct hpux_utsname)))
return -EFAULT;
down_read(&uts_sem);
error = __copy_to_user(&name->sysname, &utsname()->sysname,
HPUX_UTSLEN - 1);
error |= __put_user(0, name->sysname + HPUX_UTSLEN - 1);
error |= __copy_to_user(&name->nodename, &utsname()->nodename,
HPUX_UTSLEN - 1);
error |= __put_user(0, name->nodename + HPUX_UTSLEN - 1);
error |= __copy_to_user(&name->release, &utsname()->release,
HPUX_UTSLEN - 1);
error |= __put_user(0, name->release + HPUX_UTSLEN - 1);
error |= __copy_to_user(&name->version, &utsname()->version,
HPUX_UTSLEN - 1);
error |= __put_user(0, name->version + HPUX_UTSLEN - 1);
error |= __copy_to_user(&name->machine, &utsname()->machine,
HPUX_UTSLEN - 1);
error |= __put_user(0, name->machine + HPUX_UTSLEN - 1);
up_read(&uts_sem);
/* HP-UX utsname has no domainname field. */
/* TODO: Implement idnumber!!! */
#if 0
error |= __put_user(0,name->idnumber);
error |= __put_user(0,name->idnumber+HPUX_SNLEN-1);
#endif
error = error ? -EFAULT : 0;
return error;
}
/* Note: HP-UX just uses the old suser() function to check perms
* in this system call. We'll use capable(CAP_SYS_ADMIN).
*/
int hpux_utssys(char __user *ubuf, int n, int type)
{
int len;
int error;
switch( type ) {
case 0:
/* uname(): */
return hpux_uname((struct hpux_utsname __user *)ubuf);
break ;
case 1:
/* Obsolete (used to be umask().) */
return -EFAULT ;
break ;
case 2:
/* ustat(): */
return hpux_ustat(new_decode_dev(n),
(struct hpux_ustat __user *)ubuf);
break;
case 3:
/* setuname():
*
* On linux (unlike HP-UX), utsname.nodename
* is the same as the hostname.
*
* sys_sethostname() is defined in linux/kernel/sys.c.
*/
if (!capable(CAP_SYS_ADMIN))
return -EPERM;
/* Unlike Linux, HP-UX returns an error if n==0: */
if ( n <= 0 )
return -EINVAL ;
/* Unlike Linux, HP-UX truncates it if n is too big: */
len = (n <= __NEW_UTS_LEN) ? n : __NEW_UTS_LEN ;
return sys_sethostname(ubuf, len);
break ;
case 4:
/* sethostname():
*
* sys_sethostname() is defined in linux/kernel/sys.c.
*/
if (!capable(CAP_SYS_ADMIN))
return -EPERM;
/* Unlike Linux, HP-UX returns an error if n==0: */
if ( n <= 0 )
return -EINVAL ;
/* Unlike Linux, HP-UX truncates it if n is too big: */
len = (n <= __NEW_UTS_LEN) ? n : __NEW_UTS_LEN ;
return sys_sethostname(ubuf, len);
break ;
case 5:
/* gethostname():
*
* sys_gethostname() is defined in linux/kernel/sys.c.
*/
/* Unlike Linux, HP-UX returns an error if n==0: */
if ( n <= 0 )
return -EINVAL ;
return sys_gethostname(ubuf, n);
break ;
case 6:
/* Supposedly called from setuname() in libc.
* TODO: When and why is this called?
* Is it ever even called?
*
* This code should look a lot like sys_sethostname(),
* defined in linux/kernel/sys.c. If that gets updated,
* update this code similarly.
*/
if (!capable(CAP_SYS_ADMIN))
return -EPERM;
/* Unlike Linux, HP-UX returns an error if n==0: */
if ( n <= 0 )
return -EINVAL ;
/* Unlike Linux, HP-UX truncates it if n is too big: */
len = (n <= __NEW_UTS_LEN) ? n : __NEW_UTS_LEN ;
/**/
/* TODO: print a warning about using this? */
down_write(&uts_sem);
error = -EFAULT;
if (!copy_from_user(utsname()->sysname, ubuf, len)) {
utsname()->sysname[len] = 0;
error = 0;
}
up_write(&uts_sem);
return error;
break ;
case 7:
/* Sets utsname.release, if you're allowed.
* Undocumented. Used by swinstall to change the
* OS version, during OS updates. Yuck!!!
*
* This code should look a lot like sys_sethostname()
* in linux/kernel/sys.c. If that gets updated, update
* this code similarly.
*/
if (!capable(CAP_SYS_ADMIN))
return -EPERM;
/* Unlike Linux, HP-UX returns an error if n==0: */
if ( n <= 0 )
return -EINVAL ;
/* Unlike Linux, HP-UX truncates it if n is too big: */
len = (n <= __NEW_UTS_LEN) ? n : __NEW_UTS_LEN ;
/**/
/* TODO: print a warning about this? */
down_write(&uts_sem);
error = -EFAULT;
if (!copy_from_user(utsname()->release, ubuf, len)) {
utsname()->release[len] = 0;
error = 0;
}
up_write(&uts_sem);
return error;
break ;
default:
/* This system call returns -EFAULT if given an unknown type.
* Why not -EINVAL? I don't know, it's just not what they did.
*/
return -EFAULT ;
}
}
int hpux_getdomainname(char __user *name, int len)
{
int nlen;
int err = -EFAULT;
down_read(&uts_sem);
nlen = strlen(utsname()->domainname) + 1;
if (nlen < len)
len = nlen;
if(len > __NEW_UTS_LEN)
goto done;
if(copy_to_user(name, utsname()->domainname, len))
goto done;
err = 0;
done:
up_read(&uts_sem);
return err;
}
int hpux_pipe(int *kstack_fildes)
{
return do_pipe_flags(kstack_fildes, 0);
}
/* lies - says it works, but it really didn't lock anything */
int hpux_lockf(int fildes, int function, off_t size)
{
return 0;
}
int hpux_sysfs(int opcode, unsigned long arg1, unsigned long arg2)
{
char *fsname = NULL;
int len = 0;
int fstype;
/*Unimplemented HP-UX syscall emulation. Syscall #334 (sysfs)
Args: 1 80057bf4 0 400179f0 0 0 0 */
printk(KERN_DEBUG "in hpux_sysfs\n");
printk(KERN_DEBUG "hpux_sysfs called with opcode = %d\n", opcode);
printk(KERN_DEBUG "hpux_sysfs called with arg1='%lx'\n", arg1);
if ( opcode == 1 ) { /* GETFSIND */
char __user *user_fsname = (char __user *)arg1;
len = strlen_user(user_fsname);
printk(KERN_DEBUG "len of arg1 = %d\n", len);
if (len == 0)
return 0;
fsname = kmalloc(len, GFP_KERNEL);
if (!fsname) {
printk(KERN_DEBUG "failed to kmalloc fsname\n");
return 0;
}
if (copy_from_user(fsname, user_fsname, len)) {
printk(KERN_DEBUG "failed to copy_from_user fsname\n");
kfree(fsname);
return 0;
}
/* String could be altered by userspace after strlen_user() */
fsname[len] = '\0';
printk(KERN_DEBUG "that is '%s' as (char *)\n", fsname);
if ( !strcmp(fsname, "hfs") ) {
fstype = 0;
} else {
fstype = 0;
}
kfree(fsname);
printk(KERN_DEBUG "returning fstype=%d\n", fstype);
return fstype; /* something other than default */
}
return 0;
}
/* Table of syscall names and handle for unimplemented routines */
static const char * const syscall_names[] = {
"nosys", /* 0 */
"exit",
"fork",
"read",
"write",
"open", /* 5 */
"close",
"wait",
"creat",
"link",
"unlink", /* 10 */
"execv",
"chdir",
"time",
"mknod",
"chmod", /* 15 */
"chown",
"brk",
"lchmod",
"lseek",
"getpid", /* 20 */
"mount",
"umount",
"setuid",
"getuid",
"stime", /* 25 */
"ptrace",
"alarm",
NULL,
"pause",
"utime", /* 30 */
"stty",
"gtty",
"access",
"nice",
"ftime", /* 35 */
"sync",
"kill",
"stat",
"setpgrp3",
"lstat", /* 40 */
"dup",
"pipe",
"times",
"profil",
"ki_call", /* 45 */
"setgid",
"getgid",
NULL,
NULL,
NULL, /* 50 */
"acct",
"set_userthreadid",
NULL,
"ioctl",
"reboot", /* 55 */
"symlink",
"utssys",
"readlink",
"execve",
"umask", /* 60 */
"chroot",
"fcntl",
"ulimit",
NULL,
NULL, /* 65 */
"vfork",
NULL,
NULL,
NULL,
NULL, /* 70 */
"mmap",
NULL,
"munmap",
"mprotect",
"madvise", /* 75 */
"vhangup",
"swapoff",
NULL,
"getgroups",
"setgroups", /* 80 */
"getpgrp2",
"setpgid/setpgrp2",
"setitimer",
"wait3",
"swapon", /* 85 */
"getitimer",
NULL,
NULL,
NULL,
"dup2", /* 90 */
NULL,
"fstat",
"select",
NULL,
"fsync", /* 95 */
"setpriority",
NULL,
NULL,
NULL,
"getpriority", /* 100 */
NULL,
NULL,
NULL,
NULL,
NULL, /* 105 */
NULL,
NULL,
"sigvector",
"sigblock",
"sigsetmask", /* 110 */
"sigpause",
"sigstack",
NULL,
NULL,
NULL, /* 115 */
"gettimeofday",
"getrusage",
NULL,
NULL,
"readv", /* 120 */
"writev",
"settimeofday",
"fchown",
"fchmod",
NULL, /* 125 */
"setresuid",
"setresgid",
"rename",
"truncate",
"ftruncate", /* 130 */
NULL,
"sysconf",
NULL,
NULL,
NULL, /* 135 */
"mkdir",
"rmdir",
NULL,
"sigcleanup",
"setcore", /* 140 */
NULL,
"gethostid",
"sethostid",
"getrlimit",
"setrlimit", /* 145 */
NULL,
NULL,
"quotactl",
"get_sysinfo",
NULL, /* 150 */
"privgrp",
"rtprio",
"plock",
NULL,
"lockf", /* 155 */
"semget",
NULL,
"semop",
"msgget",
NULL, /* 160 */
"msgsnd",
"msgrcv",
"shmget",
NULL,
"shmat", /* 165 */
"shmdt",
NULL,
"csp/nsp_init",
"cluster",
"mkrnod", /* 170 */
"test",
"unsp_open",
NULL,
"getcontext",
"osetcontext", /* 175 */
"bigio",
"pipenode",
"lsync",
"getmachineid",
"cnodeid/mysite", /* 180 */
"cnodes/sitels",
"swapclients",
"rmtprocess",
"dskless_stats",
"sigprocmask", /* 185 */
"sigpending",
"sigsuspend",
"sigaction",
NULL,
"nfssvc", /* 190 */
"getfh",
"getdomainname",
"setdomainname",
"async_daemon",
"getdirentries", /* 195 */
NULL,
NULL,
"vfsmount",
NULL,
"waitpid", /* 200 */
NULL,
NULL,
NULL,
NULL,
NULL, /* 205 */
NULL,
NULL,
NULL,
NULL,
NULL, /* 210 */
NULL,
NULL,
NULL,
NULL,
NULL, /* 215 */
NULL,
NULL,
NULL,
NULL,
NULL, /* 220 */
NULL,
NULL,
NULL,
"sigsetreturn",
"sigsetstatemask", /* 225 */
"bfactl",
"cs",
"cds",
NULL,
"pathconf", /* 230 */
"fpathconf",
NULL,
NULL,
"nfs_fcntl",
"ogetacl", /* 235 */
"ofgetacl",
"osetacl",
"ofsetacl",
"pstat",
"getaudid", /* 240 */
"setaudid",
"getaudproc",
"setaudproc",
"getevent",
"setevent", /* 245 */
"audwrite",
"audswitch",
"audctl",
"ogetaccess",
"fsctl", /* 250 */
"ulconnect",
"ulcontrol",
"ulcreate",
"uldest",
"ulrecv", /* 255 */
"ulrecvcn",
"ulsend",
"ulshutdown",
"swapfs",
"fss", /* 260 */
NULL,
NULL,
NULL,
NULL,
NULL, /* 265 */
NULL,
"tsync",
"getnumfds",
"poll",
"getmsg", /* 270 */
"putmsg",
"fchdir",
"getmount_cnt",
"getmount_entry",
"accept", /* 275 */
"bind",
"connect",
"getpeername",
"getsockname",
"getsockopt", /* 280 */
"listen",
"recv",
"recvfrom",
"recvmsg",
"send", /* 285 */
"sendmsg",
"sendto",
"setsockopt",
"shutdown",
"socket", /* 290 */
"socketpair",
"proc_open",
"proc_close",
"proc_send",
"proc_recv", /* 295 */
"proc_sendrecv",
"proc_syscall",
"ipccreate",
"ipcname",
"ipcnamerase", /* 300 */
"ipclookup",
"ipcselect",
"ipcconnect",
"ipcrecvcn",
"ipcsend", /* 305 */
"ipcrecv",
"ipcgetnodename",
"ipcsetnodename",
"ipccontrol",
"ipcshutdown", /* 310 */
"ipcdest",
"semctl",
"msgctl",
"shmctl",
"mpctl", /* 315 */
"exportfs",
"getpmsg",
"putpmsg",
"strioctl",
"msync", /* 320 */
"msleep",
"mwakeup",
"msem_init",
"msem_remove",
"adjtime", /* 325 */
"kload",
"fattach",
"fdetach",
"serialize",
"statvfs", /* 330 */
"fstatvfs",
"lchown",
"getsid",
"sysfs",
NULL, /* 335 */
NULL,
"sched_setparam",
"sched_getparam",
"sched_setscheduler",
"sched_getscheduler", /* 340 */
"sched_yield",
"sched_get_priority_max",
"sched_get_priority_min",
"sched_rr_get_interval",
"clock_settime", /* 345 */
"clock_gettime",
"clock_getres",
"timer_create",
"timer_delete",
"timer_settime", /* 350 */
"timer_gettime",
"timer_getoverrun",
"nanosleep",
"toolbox",
NULL, /* 355 */
"getdents",
"getcontext",
"sysinfo",
"fcntl64",
"ftruncate64", /* 360 */
"fstat64",
"getdirentries64",
"getrlimit64",
"lockf64",
"lseek64", /* 365 */
"lstat64",
"mmap64",
"setrlimit64",
"stat64",
"truncate64", /* 370 */
"ulimit64",
NULL,
NULL,
NULL,
NULL, /* 375 */
NULL,
NULL,
NULL,
NULL,
"setcontext", /* 380 */
"sigaltstack",
"waitid",
"setpgrp",
"recvmsg2",
"sendmsg2", /* 385 */
"socket2",
"socketpair2",
"setregid",
"lwp_create",
"lwp_terminate", /* 390 */
"lwp_wait",
"lwp_suspend",
"lwp_resume",
"lwp_self",
"lwp_abort_syscall", /* 395 */
"lwp_info",
"lwp_kill",
"ksleep",
"kwakeup",
"ksleep_abort", /* 400 */
"lwp_proc_info",
"lwp_exit",
"lwp_continue",
"getacl",
"fgetacl", /* 405 */
"setacl",
"fsetacl",
"getaccess",
"lwp_mutex_init",
"lwp_mutex_lock_sys", /* 410 */
"lwp_mutex_unlock",
"lwp_cond_init",
"lwp_cond_signal",
"lwp_cond_broadcast",
"lwp_cond_wait_sys", /* 415 */
"lwp_getscheduler",
"lwp_setscheduler",
"lwp_getprivate",
"lwp_setprivate",
"lwp_detach", /* 420 */
"mlock",
"munlock",
"mlockall",
"munlockall",
"shm_open", /* 425 */
"shm_unlink",
"sigqueue",
"sigwaitinfo",
"sigtimedwait",
"sigwait", /* 430 */
"aio_read",
"aio_write",
"lio_listio",
"aio_error",
"aio_return", /* 435 */
"aio_cancel",
"aio_suspend",
"aio_fsync",
"mq_open",
"mq_unlink", /* 440 */
"mq_send",
"mq_receive",
"mq_notify",
"mq_setattr",
"mq_getattr", /* 445 */
"ksem_open",
"ksem_unlink",
"ksem_close",
"ksem_destroy",
"lw_sem_incr", /* 450 */
"lw_sem_decr",
"lw_sem_read",
"mq_close",
};
static const int syscall_names_max = 453;
int
hpux_unimplemented(unsigned long arg1,unsigned long arg2,unsigned long arg3,
unsigned long arg4,unsigned long arg5,unsigned long arg6,
unsigned long arg7,unsigned long sc_num)
{
/* NOTE: sc_num trashes arg8 for the few syscalls that actually
* have a valid 8th argument.
*/
const char *name = NULL;
if ( sc_num <= syscall_names_max && sc_num >= 0 ) {
name = syscall_names[sc_num];
}
if ( name ) {
printk(KERN_DEBUG "Unimplemented HP-UX syscall emulation. Syscall #%lu (%s)\n",
sc_num, name);
} else {
printk(KERN_DEBUG "Unimplemented unknown HP-UX syscall emulation. Syscall #%lu\n",
sc_num);
}
printk(KERN_DEBUG " Args: %lx %lx %lx %lx %lx %lx %lx\n",
arg1, arg2, arg3, arg4, arg5, arg6, arg7);
return -ENOSYS;
}