/* $OpenBSD: svr4_misc.c,v 1.47 2007/03/15 10:22:30 art Exp $ */
/* $NetBSD: svr4_misc.c,v 1.42 1996/12/06 03:22:34 christos Exp $ */
/*
* Copyright (c) 1994 Christos Zoulas
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/*
* SVR4 compatibility module.
*
* SVR4 system calls that are implemented differently in BSD are
* handled here.
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/exec.h>
#include <sys/exec_olf.h>
#include <sys/namei.h>
#include <sys/dirent.h>
#include <sys/proc.h>
#include <sys/sched.h>
#include <sys/file.h>
#include <sys/stat.h>
#include <sys/time.h>
#include <sys/filedesc.h>
#include <sys/ioctl.h>
#include <sys/kernel.h>
#include <sys/malloc.h>
#include <sys/mbuf.h>
#include <sys/ktrace.h>
#include <sys/mman.h>
#include <sys/mount.h>
#include <sys/pool.h>
#include <sys/resource.h>
#include <sys/resourcevar.h>
#include <sys/socket.h>
#include <sys/vnode.h>
#include <sys/uio.h>
#include <sys/wait.h>
#include <sys/utsname.h>
#include <sys/unistd.h>
#include <sys/times.h>
#include <sys/sem.h>
#include <sys/msg.h>
#include <sys/ptrace.h>
#include <sys/signalvar.h>
#include <netinet/in.h>
#include <sys/syscallargs.h>
#include <miscfs/specfs/specdev.h>
#include <compat/svr4/svr4_types.h>
#include <compat/svr4/svr4_signal.h>
#include <compat/svr4/svr4_syscallargs.h>
#include <compat/svr4/svr4_util.h>
#include <compat/svr4/svr4_time.h>
#include <compat/svr4/svr4_dirent.h>
#include <compat/svr4/svr4_ulimit.h>
#include <compat/svr4/svr4_hrt.h>
#include <compat/svr4/svr4_wait.h>
#include <compat/svr4/svr4_statvfs.h>
#include <compat/svr4/svr4_sysconfig.h>
#include <compat/svr4/svr4_acl.h>
#include <compat/common/compat_dir.h>
#include <uvm/uvm_extern.h>
static __inline clock_t timeval_to_clock_t(struct timeval *);
static int svr4_setinfo(struct proc *, int, svr4_siginfo_t *);
struct svr4_hrtcntl_args;
static int svr4_hrtcntl(struct proc *, struct svr4_hrtcntl_args *,
register_t *);
static void bsd_statfs_to_svr4_statvfs(const struct statfs *,
struct svr4_statvfs *);
static void bsd_statfs_to_svr4_statvfs64(const struct statfs *,
struct svr4_statvfs64 *);
static struct proc *svr4_pfind(pid_t pid);
static int svr4_mknod(struct proc *, register_t *, char *,
svr4_mode_t, svr4_dev_t);
int
svr4_sys_wait(p, v, retval)
register struct proc *p;
void *v;
register_t *retval;
{
struct svr4_sys_wait_args *uap = v;
struct sys_wait4_args w4;
int error;
size_t sz = sizeof(*SCARG(&w4, status));
SCARG(&w4, rusage) = NULL;
SCARG(&w4, options) = 0;
if (SCARG(uap, status) == NULL) {
caddr_t sg = stackgap_init(p->p_emul);
SCARG(&w4, status) = stackgap_alloc(&sg, sz);
}
else
SCARG(&w4, status) = SCARG(uap, status);
SCARG(&w4, pid) = WAIT_ANY;
if ((error = sys_wait4(p, &w4, retval)) != 0)
return error;
/*
* It looks like wait(2) on svr4/solaris/2.4 returns
* the status in retval[1], and the pid on retval[0].
* NB: this can break if register_t stops being an int.
*/
return copyin(SCARG(&w4, status), &retval[1], sz);
}
int
svr4_sys_execv(p, v, retval)
register struct proc *p;
void *v;
register_t *retval;
{
struct svr4_sys_execv_args /* {
syscallarg(char *) path;
syscallarg(char **) argv;
} */ *uap = v;
struct sys_execve_args ap;
caddr_t sg;
sg = stackgap_init(p->p_emul);
SVR4_CHECK_ALT_EXIST(p, &sg, SCARG(uap, path));
SCARG(&ap, path) = SCARG(uap, path);
SCARG(&ap, argp) = SCARG(uap, argp);
SCARG(&ap, envp) = NULL;
return sys_execve(p, &ap, retval);
}
int
svr4_sys_execve(p, v, retval)
register struct proc *p;
void *v;
register_t *retval;
{
struct svr4_sys_execve_args /* {
syscallarg(char *) path;
syscallarg(char **) argv;
syscallarg(char **) envp;
} */ *uap = v;
struct sys_execve_args ap;
caddr_t sg;
sg = stackgap_init(p->p_emul);
SVR4_CHECK_ALT_EXIST(p, &sg, SCARG(uap, path));
SCARG(&ap, path) = SCARG(uap, path);
SCARG(&ap, argp) = SCARG(uap, argp);
SCARG(&ap, envp) = SCARG(uap, envp);
return sys_execve(p, &ap, retval);
}
int
svr4_sys_time(p, v, retval)
register struct proc *p;
void *v;
register_t *retval;
{
struct svr4_sys_time_args *uap = v;
int error = 0;
struct timeval tv;
microtime(&tv);
if (SCARG(uap, t))
error = copyout(&tv.tv_sec, SCARG(uap, t),
sizeof(*(SCARG(uap, t))));
*retval = (int) tv.tv_sec;
return error;
}
/*
* Read SVR4-style directory entries. We suck them into kernel space so
* that they can be massaged before being copied out to user code. Like
* SunOS, we squish out `empty' entries.
*
* This is quite ugly, but what do you expect from compatibility code?
*/
int svr4_readdir_callback(void *, struct dirent *, off_t);
int svr4_readdir64_callback(void *, struct dirent *, off_t);
struct svr4_readdir_callback_args {
caddr_t outp;
int resid;
};
int
svr4_readdir_callback(arg, bdp, cookie)
void *arg;
struct dirent *bdp;
off_t cookie;
{
struct svr4_dirent idb;
struct svr4_readdir_callback_args *cb = arg;
int svr4_reclen;
int error;
svr4_reclen = SVR4_RECLEN(&idb, bdp->d_namlen);
if (cb->resid < svr4_reclen)
return (ENOMEM);
idb.d_ino = (svr4_ino_t)bdp->d_fileno;
idb.d_off = (svr4_off_t)cookie;
idb.d_reclen = (u_short)svr4_reclen;
strlcpy(idb.d_name, bdp->d_name, sizeof(idb.d_name));
if ((error = copyout((caddr_t)&idb, cb->outp, svr4_reclen)))
return (error);
cb->outp += svr4_reclen;
cb->resid -= svr4_reclen;
return (0);
}
int
svr4_readdir64_callback(arg, bdp, cookie)
void *arg;
struct dirent *bdp;
off_t cookie;
{
struct svr4_dirent64 idb;
struct svr4_readdir_callback_args *cb = arg;
int svr4_reclen;
int error;
svr4_reclen = SVR4_RECLEN(&idb, bdp->d_namlen);
if (cb->resid < svr4_reclen)
return (ENOMEM);
/*
* Massage in place to make a SVR4-shaped dirent (otherwise
* we have to worry about touching user memory outside of
* the copyout() call).
*/
idb.d_ino = (svr4_ino64_t)bdp->d_fileno;
idb.d_off = (svr4_off64_t)cookie;
idb.d_reclen = (u_short)svr4_reclen;
strlcpy(idb.d_name, bdp->d_name, sizeof(idb.d_name));
if ((error = copyout((caddr_t)&idb, cb->outp, svr4_reclen)))
return (error);
cb->outp += svr4_reclen;
cb->resid -= svr4_reclen;
return (0);
}
int
svr4_sys_getdents(p, v, retval)
register struct proc *p;
void *v;
register_t *retval;
{
struct svr4_sys_getdents_args *uap = v;
struct svr4_readdir_callback_args args;
struct file *fp;
int error;
if ((error = getvnode(p->p_fd, SCARG(uap, fd), &fp)) != 0)
return (error);
args.resid = SCARG(uap, nbytes);
args.outp = (caddr_t)SCARG(uap, buf);
error = readdir_with_callback(fp, &fp->f_offset, SCARG(uap, nbytes),
svr4_readdir_callback, &args);
FRELE(fp);
if (error)
return (error);
*retval = SCARG(uap, nbytes) - args.resid;
return (0);
}
int
svr4_sys_getdents64(p, v, retval)
register struct proc *p;
void *v;
register_t *retval;
{
struct svr4_sys_getdents64_args *uap = v;
struct svr4_readdir_callback_args args;
struct file *fp;
int error;
if ((error = getvnode(p->p_fd, SCARG(uap, fd), &fp)) != 0)
return (error);
args.resid = SCARG(uap, nbytes);
args.outp = (caddr_t)SCARG(uap, dp);
error = readdir_with_callback(fp, &fp->f_offset, SCARG(uap, nbytes),
svr4_readdir64_callback, &args);
FRELE(fp);
if (error)
return (error);
*retval = SCARG(uap, nbytes) - args.resid;
return (0);
}
int
svr4_sys_mmap(p, v, retval)
register struct proc *p;
void *v;
register_t *retval;
{
struct svr4_sys_mmap_args *uap = v;
struct sys_mmap_args mm;
void *rp;
#define _MAP_NEW 0x80000000
/*
* Verify the arguments.
*/
if (SCARG(uap, prot) & ~(PROT_READ | PROT_WRITE | PROT_EXEC))
return EINVAL; /* XXX still needed? */
if (SCARG(uap, len) == 0)
return EINVAL;
SCARG(&mm, prot) = SCARG(uap, prot);
SCARG(&mm, len) = SCARG(uap, len);
SCARG(&mm, flags) = SCARG(uap, flags) & ~_MAP_NEW;
SCARG(&mm, fd) = SCARG(uap, fd);
SCARG(&mm, addr) = SCARG(uap, addr);
SCARG(&mm, pos) = SCARG(uap, pos);
rp = (void *) round_page((vaddr_t)p->p_vmspace->vm_daddr + MAXDSIZ);
if ((SCARG(&mm, flags) & MAP_FIXED) == 0 &&
SCARG(&mm, addr) != 0 && SCARG(&mm, addr) < rp)
SCARG(&mm, addr) = rp;
return sys_mmap(p, &mm, retval);
}
int
svr4_sys_mmap64(p, v, retval)
register struct proc *p;
void *v;
register_t *retval;
{
struct svr4_sys_mmap64_args *uap = v;
struct sys_mmap_args mm;
void *rp;
#define _MAP_NEW 0x80000000
/*
* Verify the arguments.
*/
if (SCARG(uap, prot) & ~(PROT_READ | PROT_WRITE | PROT_EXEC))
return EINVAL; /* XXX still needed? */
if (SCARG(uap, len) == 0)
return EINVAL;
SCARG(&mm, prot) = SCARG(uap, prot);
SCARG(&mm, len) = SCARG(uap, len);
SCARG(&mm, flags) = SCARG(uap, flags) & ~_MAP_NEW;
SCARG(&mm, fd) = SCARG(uap, fd);
SCARG(&mm, addr) = SCARG(uap, addr);
SCARG(&mm, pos) = SCARG(uap, pos);
rp = (void *) round_page((vaddr_t)p->p_vmspace->vm_daddr + MAXDSIZ);
if ((SCARG(&mm, flags) & MAP_FIXED) == 0 &&
SCARG(&mm, addr) != 0 && SCARG(&mm, addr) < rp)
SCARG(&mm, addr) = rp;
return sys_mmap(p, &mm, retval);
}
int
svr4_sys_fchroot(p, v, retval)
register struct proc *p;
void *v;
register_t *retval;
{
struct svr4_sys_fchroot_args *uap = v;
struct filedesc *fdp = p->p_fd;
struct vnode *vp;
struct file *fp;
int error;
if ((error = suser(p, 0)) != 0)
return error;
if ((error = getvnode(fdp, SCARG(uap, fd), &fp)) != 0)
return error;
vp = (struct vnode *) fp->f_data;
vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, p);
if (vp->v_type != VDIR)
error = ENOTDIR;
else
error = VOP_ACCESS(vp, VEXEC, p->p_ucred, p);
VOP_UNLOCK(vp, 0, p);
if (error) {
FRELE(fp);
return error;
}
VREF(vp);
if (fdp->fd_rdir != NULL)
vrele(fdp->fd_rdir);
fdp->fd_rdir = vp;
FRELE(fp);
return 0;
}
static int
svr4_mknod(p, retval, path, mode, dev)
struct proc *p;
register_t *retval;
char *path;
svr4_mode_t mode;
svr4_dev_t dev;
{
caddr_t sg = stackgap_init(p->p_emul);
SVR4_CHECK_ALT_EXIST(p, &sg, path);
if (S_ISFIFO(mode)) {
struct sys_mkfifo_args ap;
SCARG(&ap, path) = path;
SCARG(&ap, mode) = mode;
return sys_mkfifo(p, &ap, retval);
} else {
struct sys_mknod_args ap;
SCARG(&ap, path) = path;
SCARG(&ap, mode) = mode;
SCARG(&ap, dev) = dev;
return sys_mknod(p, &ap, retval);
}
}
int
svr4_sys_mknod(p, v, retval)
register struct proc *p;
void *v;
register_t *retval;
{
struct svr4_sys_mknod_args *uap = v;
return svr4_mknod(p, retval,
SCARG(uap, path), SCARG(uap, mode),
svr4_to_bsd_odev_t(SCARG(uap, dev)));
}
int
svr4_sys_xmknod(p, v, retval)
register struct proc *p;
void *v;
register_t *retval;
{
struct svr4_sys_xmknod_args *uap = v;
return svr4_mknod(p, retval,
SCARG(uap, path), SCARG(uap, mode),
svr4_to_bsd_dev_t(SCARG(uap, dev)));
}
int
svr4_sys_vhangup(p, v, retval)
struct proc *p;
void *v;
register_t *retval;
{
return 0;
}
int
svr4_sys_sysconfig(p, v, retval)
register struct proc *p;
void *v;
register_t *retval;
{
struct svr4_sys_sysconfig_args *uap = v;
extern int maxfiles;
switch (SCARG(uap, name)) {
case SVR4_CONFIG_UNUSED:
*retval = 0;
break;
case SVR4_CONFIG_NGROUPS:
*retval = NGROUPS_MAX;
break;
case SVR4_CONFIG_CHILD_MAX:
*retval = maxproc;
break;
case SVR4_CONFIG_OPEN_FILES:
*retval = maxfiles;
break;
case SVR4_CONFIG_POSIX_VER:
*retval = 198808;
break;
case SVR4_CONFIG_PAGESIZE:
*retval = NBPG;
break;
case SVR4_CONFIG_CLK_TCK:
*retval = 60; /* should this be `hz', ie. 100? */
break;
case SVR4_CONFIG_XOPEN_VER:
*retval = 2; /* XXX: What should that be? */
break;
case SVR4_CONFIG_PROF_TCK:
*retval = 60; /* XXX: What should that be? */
break;
case SVR4_CONFIG_NPROC_CONF:
*retval = 1; /* Only one processor for now */
break;
case SVR4_CONFIG_NPROC_ONLN:
*retval = 1; /* And it better be online */
break;
case SVR4_CONFIG_AIO_LISTIO_MAX:
case SVR4_CONFIG_AIO_MAX:
case SVR4_CONFIG_AIO_PRIO_DELTA_MAX:
*retval = 0; /* No aio support */
break;
case SVR4_CONFIG_DELAYTIMER_MAX:
*retval = 0; /* No delaytimer support */
break;
#ifdef SYSVMSG
case SVR4_CONFIG_MQ_OPEN_MAX:
*retval = msginfo.msgmni;
break;
#endif
case SVR4_CONFIG_MQ_PRIO_MAX:
*retval = 0; /* XXX: Don't know */
break;
case SVR4_CONFIG_RTSIG_MAX:
*retval = 0;
break;
#ifdef SYSVSEM
case SVR4_CONFIG_SEM_NSEMS_MAX:
*retval = seminfo.semmni;
break;
case SVR4_CONFIG_SEM_VALUE_MAX:
*retval = seminfo.semvmx;
break;
#endif
case SVR4_CONFIG_SIGQUEUE_MAX:
*retval = 0; /* XXX: Don't know */
break;
case SVR4_CONFIG_SIGRT_MIN:
case SVR4_CONFIG_SIGRT_MAX:
*retval = 0; /* No real time signals */
break;
case SVR4_CONFIG_TIMER_MAX:
*retval = 3; /* XXX: real, virtual, profiling */
break;
case SVR4_CONFIG_PHYS_PAGES:
*retval = uvmexp.npages;
break;
case SVR4_CONFIG_AVPHYS_PAGES:
*retval = uvmexp.active; /* XXX: active instead of avg */
break;
default:
return EINVAL;
}
return 0;
}
#define SVR4_RLIMIT_NOFILE 5 /* Other RLIMIT_* are the same */
#define SVR4_RLIMIT_VMEM 6 /* Other RLIMIT_* are the same */
#define SVR4_RLIM_NLIMITS 7
int
svr4_sys_getrlimit(p, v, retval)
register struct proc *p;
void *v;
register_t *retval;
{
struct svr4_sys_getrlimit_args *uap = v;
struct compat_43_sys_getrlimit_args ap;
if (SCARG(uap, which) >= SVR4_RLIM_NLIMITS)
return EINVAL;
if (SCARG(uap, which) == SVR4_RLIMIT_NOFILE)
SCARG(uap, which) = RLIMIT_NOFILE;
if (SCARG(uap, which) == SVR4_RLIMIT_VMEM)
SCARG(uap, which) = RLIMIT_RSS;
SCARG(&ap, which) = SCARG(uap, which);
SCARG(&ap, rlp) = SCARG(uap, rlp);
return compat_43_sys_getrlimit(p, &ap, retval);
}
int
svr4_sys_setrlimit(p, v, retval)
register struct proc *p;
void *v;
register_t *retval;
{
struct svr4_sys_setrlimit_args *uap = v;
struct compat_43_sys_setrlimit_args ap;
if (SCARG(uap, which) >= SVR4_RLIM_NLIMITS)
return EINVAL;
if (SCARG(uap, which) == SVR4_RLIMIT_NOFILE)
SCARG(uap, which) = RLIMIT_NOFILE;
if (SCARG(uap, which) == SVR4_RLIMIT_VMEM)
SCARG(uap, which) = RLIMIT_RSS;
SCARG(&ap, which) = SCARG(uap, which);
SCARG(&ap, rlp) = SCARG(uap, rlp);
return compat_43_sys_setrlimit(p, uap, retval);
}
/* ARGSUSED */
int
svr4_sys_break(p, v, retval)
register struct proc *p;
void *v;
register_t *retval;
{
struct svr4_sys_break_args *uap = v;
register struct vmspace *vm = p->p_vmspace;
vaddr_t new, old;
int error;
register int diff;
old = (vaddr_t) vm->vm_daddr;
new = round_page((vaddr_t)SCARG(uap, nsize));
diff = new - old;
DPRINTF(("break(1): old %lx new %lx diff %x\n", old, new, diff));
if (diff > p->p_rlimit[RLIMIT_DATA].rlim_cur)
return ENOMEM;
old = round_page(old + ctob(vm->vm_dsize));
DPRINTF(("break(2): dsize = %x ctob %x\n",
vm->vm_dsize, ctob(vm->vm_dsize)));
diff = new - old;
DPRINTF(("break(3): old %lx new %lx diff %x\n", old, new, diff));
if (diff > 0) {
error = uvm_map(&vm->vm_map, &old, diff, NULL, UVM_UNKNOWN_OFFSET,
0, UVM_MAPFLAG(UVM_PROT_ALL, UVM_PROT_ALL, UVM_INH_COPY,
UVM_ADV_NORMAL,
UVM_FLAG_AMAPPAD|UVM_FLAG_FIXED|
UVM_FLAG_OVERLAY|UVM_FLAG_COPYONW));
if (error) {
uprintf("sbrk: grow failed, return = %d\n", error);
return error;
}
vm->vm_dsize += btoc(diff);
} else if (diff < 0) {
diff = -diff;
uvm_deallocate(&vm->vm_map, new, diff);
vm->vm_dsize -= btoc(diff);
}
return 0;
}
static __inline clock_t
timeval_to_clock_t(tv)
struct timeval *tv;
{
return tv->tv_sec * hz + tv->tv_usec / (1000000 / hz);
}
int
svr4_sys_times(p, v, retval)
register struct proc *p;
void *v;
register_t *retval;
{
struct svr4_sys_times_args *uap = v;
int error;
struct tms tms;
struct timeval t;
struct rusage *ru;
struct rusage r;
struct sys_getrusage_args ga;
caddr_t sg = stackgap_init(p->p_emul);
ru = stackgap_alloc(&sg, sizeof(struct rusage));
SCARG(&ga, who) = RUSAGE_SELF;
SCARG(&ga, rusage) = ru;
error = sys_getrusage(p, &ga, retval);
if (error)
return error;
if ((error = copyin(ru, &r, sizeof r)) != 0)
return error;
tms.tms_utime = timeval_to_clock_t(&r.ru_utime);
tms.tms_stime = timeval_to_clock_t(&r.ru_stime);
SCARG(&ga, who) = RUSAGE_CHILDREN;
error = sys_getrusage(p, &ga, retval);
if (error)
return error;
if ((error = copyin(ru, &r, sizeof r)) != 0)
return error;
tms.tms_cutime = timeval_to_clock_t(&r.ru_utime);
tms.tms_cstime = timeval_to_clock_t(&r.ru_stime);
microtime(&t);
*retval = timeval_to_clock_t(&t);
return copyout(&tms, SCARG(uap, tp), sizeof(tms));
}
int
svr4_sys_ulimit(p, v, retval)
register struct proc *p;
void *v;
register_t *retval;
{
struct svr4_sys_ulimit_args *uap = v;
switch (SCARG(uap, cmd)) {
case SVR4_GFILLIM:
*retval = p->p_rlimit[RLIMIT_FSIZE].rlim_cur / 512;
return 0;
case SVR4_SFILLIM:
{
int error;
struct sys_setrlimit_args srl;
struct rlimit krl;
caddr_t sg = stackgap_init(p->p_emul);
struct rlimit *url = (struct rlimit *)
stackgap_alloc(&sg, sizeof *url);
krl.rlim_cur = SCARG(uap, newlimit) * 512;
krl.rlim_max = p->p_rlimit[RLIMIT_FSIZE].rlim_max;
error = copyout(&krl, url, sizeof(*url));
if (error)
return error;
SCARG(&srl, which) = RLIMIT_FSIZE;
SCARG(&srl, rlp) = url;
error = sys_setrlimit(p, &srl, retval);
if (error)
return error;
*retval = p->p_rlimit[RLIMIT_FSIZE].rlim_cur;
return 0;
}
case SVR4_GMEMLIM:
{
struct vmspace *vm = p->p_vmspace;
*retval = (long) vm->vm_daddr +
p->p_rlimit[RLIMIT_DATA].rlim_cur;
return 0;
}
case SVR4_GDESLIM:
*retval = p->p_rlimit[RLIMIT_NOFILE].rlim_cur;
return 0;
default:
return EINVAL;
}
}
static struct proc *
svr4_pfind(pid)
pid_t pid;
{
struct proc *p;
/* look in the live processes */
if ((p = pfind(pid)) != NULL)
return p;
/* look in the zombies */
LIST_FOREACH(p, &zombproc, p_list)
if (p->p_pid == pid)
return p;
return NULL;
}
int
svr4_sys_pgrpsys(p, v, retval)
register struct proc *p;
void *v;
register_t *retval;
{
struct svr4_sys_pgrpsys_args *uap = v;
int error;
switch (SCARG(uap, cmd)) {
case 0: /* getpgrp() */
*retval = p->p_pgrp->pg_id;
return 0;
case 1: /* setpgrp() */
{
struct sys_setpgid_args sa;
SCARG(&sa, pid) = 0;
SCARG(&sa, pgid) = 0;
if ((error = sys_setpgid(p, &sa, retval)) != 0)
return error;
*retval = p->p_pgrp->pg_id;
return 0;
}
case 2: /* getsid(pid) */
if (SCARG(uap, pid) != 0 &&
(p = svr4_pfind(SCARG(uap, pid))) == NULL)
return ESRCH;
/*
* we return the pid of the session leader for this
* process
*/
*retval = (register_t) p->p_session->s_leader->p_pid;
return 0;
case 3: /* setsid() */
return sys_setsid(p, NULL, retval);
case 4: /* getpgid(pid) */
if (SCARG(uap, pid) != 0 &&
(p = svr4_pfind(SCARG(uap, pid))) == NULL)
return ESRCH;
*retval = (int) p->p_pgrp->pg_id;
return 0;
case 5: /* setpgid(pid, pgid); */
{
struct sys_setpgid_args sa;
SCARG(&sa, pid) = SCARG(uap, pid);
SCARG(&sa, pgid) = SCARG(uap, pgid);
return sys_setpgid(p, &sa, retval);
}
default:
return EINVAL;
}
}
struct svr4_hrtcntl_args {
syscallarg(int) cmd;
syscallarg(int) fun;
syscallarg(int) clk;
syscallarg(svr4_hrt_interval_t *) iv;
syscallarg(svr4_hrt_time_t *) ti;
};
static int
svr4_hrtcntl(p, uap, retval)
register struct proc *p;
register struct svr4_hrtcntl_args *uap;
register_t *retval;
{
switch (SCARG(uap, fun)) {
case SVR4_HRT_CNTL_RES:
DPRINTF(("htrcntl(RES)\n"));
*retval = SVR4_HRT_USEC;
return 0;
case SVR4_HRT_CNTL_TOFD:
DPRINTF(("htrcntl(TOFD)\n"));
{
struct timeval tv;
svr4_hrt_time_t t;
if (SCARG(uap, clk) != SVR4_HRT_CLK_STD) {
DPRINTF(("clk == %d\n", SCARG(uap, clk)));
return EINVAL;
}
if (SCARG(uap, ti) == NULL) {
DPRINTF(("ti NULL\n"));
return EINVAL;
}
microtime(&tv);
t.h_sec = tv.tv_sec;
t.h_rem = tv.tv_usec;
t.h_res = SVR4_HRT_USEC;
return copyout(&t, SCARG(uap, ti), sizeof(t));
}
case SVR4_HRT_CNTL_START:
DPRINTF(("htrcntl(START)\n"));
return ENOSYS;
case SVR4_HRT_CNTL_GET:
DPRINTF(("htrcntl(GET)\n"));
return ENOSYS;
default:
DPRINTF(("Bad htrcntl command %d\n", SCARG(uap, fun)));
return ENOSYS;
}
}
int
svr4_sys_hrtsys(p, v, retval)
register struct proc *p;
void *v;
register_t *retval;
{
struct svr4_sys_hrtsys_args *uap = v;
switch (SCARG(uap, cmd)) {
case SVR4_HRT_CNTL:
return svr4_hrtcntl(p, (struct svr4_hrtcntl_args *) uap,
retval);
case SVR4_HRT_ALRM:
DPRINTF(("hrtalarm\n"));
return ENOSYS;
case SVR4_HRT_SLP:
DPRINTF(("hrtsleep\n"));
return ENOSYS;
case SVR4_HRT_CAN:
DPRINTF(("hrtcancel\n"));
return ENOSYS;
default:
DPRINTF(("Bad hrtsys command %d\n", SCARG(uap, cmd)));
return EINVAL;
}
}
static int
svr4_setinfo(p, st, s)
struct proc *p;
int st;
svr4_siginfo_t *s;
{
svr4_siginfo_t i;
bzero(&i, sizeof(i));
i.svr4_si_signo = SVR4_SIGCHLD;
i.svr4_si_errno = 0; /* XXX? */
if (p) {
i.svr4_si_pid = p->p_pid;
if (p->p_stat == SZOMB) {
i.svr4_si_stime = p->p_ru->ru_stime.tv_sec;
i.svr4_si_utime = p->p_ru->ru_utime.tv_sec;
} else {
i.svr4_si_stime = p->p_stats->p_ru.ru_stime.tv_sec;
i.svr4_si_utime = p->p_stats->p_ru.ru_utime.tv_sec;
}
}
if (WIFEXITED(st)) {
i.svr4_si_status = WEXITSTATUS(st);
i.svr4_si_code = SVR4_CLD_EXITED;
}
else if (WIFSTOPPED(st)) {
i.svr4_si_status = bsd_to_svr4_sig[WSTOPSIG(st)];
if (i.svr4_si_status == SVR4_SIGCONT)
i.svr4_si_code = SVR4_CLD_CONTINUED;
else
i.svr4_si_code = SVR4_CLD_STOPPED;
} else {
i.svr4_si_status = bsd_to_svr4_sig[WTERMSIG(st)];
if (WCOREDUMP(st))
i.svr4_si_code = SVR4_CLD_DUMPED;
else
i.svr4_si_code = SVR4_CLD_KILLED;
}
DPRINTF(("siginfo [pid %ld signo %d code %d errno %d status %d]\n",
i.svr4_si_pid, i.svr4_si_signo, i.svr4_si_code,
i.svr4_si_errno, i.svr4_si_status));
return copyout(&i, s, sizeof(i));
}
int
svr4_sys_waitsys(q, v, retval)
struct proc *q;
void *v;
register_t *retval;
{
struct svr4_sys_waitsys_args *uap = v;
int nfound;
int error;
struct proc *p, *t;
switch (SCARG(uap, grp)) {
case SVR4_P_PID:
break;
case SVR4_P_PGID:
SCARG(uap, id) = -q->p_pgid;
break;
case SVR4_P_ALL:
SCARG(uap, id) = WAIT_ANY;
break;
default:
return (EINVAL);
}
DPRINTF(("waitsys(%d, %d, %p, %x)\n", SCARG(uap, grp), SCARG(uap, id),
SCARG(uap, info), SCARG(uap, options)));
loop:
nfound = 0;
LIST_FOREACH(p, &q->p_children, p_sibling) {
if (SCARG(uap, id) != WAIT_ANY &&
p->p_pid != SCARG(uap, id) &&
p->p_pgid != -SCARG(uap, id)) {
DPRINTF(("pid %d pgid %d != %d\n", p->p_pid,
p->p_pgid, SCARG(uap, id)));
continue;
}
nfound++;
if (p->p_stat == SZOMB &&
((SCARG(uap, options) & (SVR4_WEXITED|SVR4_WTRAPPED)))) {
*retval = 0;
DPRINTF(("found %d\n", p->p_pid));
error = svr4_setinfo(p, p->p_xstat, SCARG(uap, info));
if (error)
return (error);
if ((SCARG(uap, options) & SVR4_WNOWAIT)) {
DPRINTF(("Don't wait\n"));
return (0);
}
/*
* If we got the child via a ptrace 'attach',
* we need to give it back to the old parent.
*/
if (p->p_oppid && (t = pfind(p->p_oppid))) {
p->p_oppid = 0;
proc_reparent(p, t);
psignal(t, SIGCHLD);
wakeup((caddr_t)t);
return (0);
}
scheduler_wait_hook(q, p);
p->p_xstat = 0;
ruadd(&q->p_stats->p_cru, p->p_ru);
proc_zap(p);
return (0);
}
if (p->p_stat == SSTOP && (p->p_flag & P_WAITED) == 0 &&
(p->p_flag & P_TRACED ||
(SCARG(uap, options) & (SVR4_WSTOPPED|SVR4_WCONTINUED)))) {
DPRINTF(("jobcontrol %d\n", p->p_pid));
if (((SCARG(uap, options) & SVR4_WNOWAIT)) == 0)
atomic_setbits_int(&p->p_flag, P_WAITED);
*retval = 0;
return (svr4_setinfo(p, W_STOPCODE(p->p_xstat),
SCARG(uap, info)));
}
}
if (nfound == 0)
return (ECHILD);
if (SCARG(uap, options) & SVR4_WNOHANG) {
*retval = 0;
if ((error = svr4_setinfo(NULL, 0, SCARG(uap, info))) != 0)
return (error);
return (0);
}
if ((error = tsleep((caddr_t)q, PWAIT | PCATCH, "svr4_wait", 0)) != 0)
return (error);
goto loop;
}
static void
bsd_statfs_to_svr4_statvfs(bfs, sfs)
const struct statfs *bfs;
struct svr4_statvfs *sfs;
{
sfs->f_bsize = bfs->f_iosize; /* XXX */
sfs->f_frsize = bfs->f_bsize;
sfs->f_blocks = bfs->f_blocks;
sfs->f_bfree = bfs->f_bfree;
sfs->f_bavail = bfs->f_bavail;
sfs->f_files = bfs->f_files;
sfs->f_ffree = bfs->f_ffree;
sfs->f_favail = bfs->f_ffree;
sfs->f_fsid = bfs->f_fsid.val[0];
bcopy(bfs->f_fstypename, sfs->f_basetype, sizeof(sfs->f_basetype));
sfs->f_flag = 0;
if (bfs->f_flags & MNT_RDONLY)
sfs->f_flag |= SVR4_ST_RDONLY;
if (bfs->f_flags & MNT_NOSUID)
sfs->f_flag |= SVR4_ST_NOSUID;
sfs->f_namemax = MAXNAMLEN;
bcopy(bfs->f_fstypename, sfs->f_fstr, sizeof(sfs->f_fstr)); /* XXX */
bzero(sfs->f_filler, sizeof(sfs->f_filler));
}
static void
bsd_statfs_to_svr4_statvfs64(bfs, sfs)
const struct statfs *bfs;
struct svr4_statvfs64 *sfs;
{
sfs->f_bsize = bfs->f_iosize; /* XXX */
sfs->f_frsize = bfs->f_bsize;
sfs->f_blocks = bfs->f_blocks;
sfs->f_bfree = bfs->f_bfree;
sfs->f_bavail = bfs->f_bavail;
sfs->f_files = bfs->f_files;
sfs->f_ffree = bfs->f_ffree;
sfs->f_favail = bfs->f_ffree;
sfs->f_fsid = bfs->f_fsid.val[0];
bcopy(bfs->f_fstypename, sfs->f_basetype, sizeof(sfs->f_basetype));
sfs->f_flag = 0;
if (bfs->f_flags & MNT_RDONLY)
sfs->f_flag |= SVR4_ST_RDONLY;
if (bfs->f_flags & MNT_NOSUID)
sfs->f_flag |= SVR4_ST_NOSUID;
sfs->f_namemax = MAXNAMLEN;
bcopy(bfs->f_fstypename, sfs->f_fstr, sizeof(sfs->f_fstr)); /* XXX */
bzero(sfs->f_filler, sizeof(sfs->f_filler));
}
int
svr4_sys_statvfs(p, v, retval)
register struct proc *p;
void *v;
register_t *retval;
{
struct svr4_sys_statvfs_args *uap = v;
struct sys_statfs_args fs_args;
caddr_t sg = stackgap_init(p->p_emul);
struct statfs *fs = stackgap_alloc(&sg, sizeof(struct statfs));
struct statfs bfs;
struct svr4_statvfs sfs;
int error;
SVR4_CHECK_ALT_EXIST(p, &sg, SCARG(uap, path));
SCARG(&fs_args, path) = SCARG(uap, path);
SCARG(&fs_args, buf) = fs;
if ((error = sys_statfs(p, &fs_args, retval)) != 0)
return error;
if ((error = copyin(fs, &bfs, sizeof(bfs))) != 0)
return error;
bsd_statfs_to_svr4_statvfs(&bfs, &sfs);
return copyout(&sfs, SCARG(uap, fs), sizeof(sfs));
}
int
svr4_sys_fstatvfs(p, v, retval)
register struct proc *p;
void *v;
register_t *retval;
{
struct svr4_sys_fstatvfs_args *uap = v;
struct sys_fstatfs_args fs_args;
caddr_t sg = stackgap_init(p->p_emul);
struct statfs *fs = stackgap_alloc(&sg, sizeof(struct statfs));
struct statfs bfs;
struct svr4_statvfs sfs;
int error;
SCARG(&fs_args, fd) = SCARG(uap, fd);
SCARG(&fs_args, buf) = fs;
if ((error = sys_fstatfs(p, &fs_args, retval)) != 0)
return error;
if ((error = copyin(fs, &bfs, sizeof(bfs))) != 0)
return error;
bsd_statfs_to_svr4_statvfs(&bfs, &sfs);
return copyout(&sfs, SCARG(uap, fs), sizeof(sfs));
}
int
svr4_sys_fstatvfs64(p, v, retval)
register struct proc *p;
void *v;
register_t *retval;
{
struct svr4_sys_fstatvfs64_args *uap = v;
struct sys_fstatfs_args fs_args;
caddr_t sg = stackgap_init(p->p_emul);
struct statfs *fs = stackgap_alloc(&sg, sizeof(struct statfs));
struct statfs bfs;
struct svr4_statvfs64 sfs;
int error;
SCARG(&fs_args, fd) = SCARG(uap, fd);
SCARG(&fs_args, buf) = fs;
if ((error = sys_fstatfs(p, &fs_args, retval)) != 0)
return error;
if ((error = copyin(fs, &bfs, sizeof(bfs))) != 0)
return error;
bsd_statfs_to_svr4_statvfs64(&bfs, &sfs);
return copyout(&sfs, SCARG(uap, fs), sizeof(sfs));
}
int
svr4_sys_alarm(p, v, retval)
register struct proc *p;
void *v;
register_t *retval;
{
struct svr4_sys_alarm_args *uap = v;
int error;
struct itimerval *ntp, *otp, tp;
struct sys_setitimer_args sa;
caddr_t sg = stackgap_init(p->p_emul);
ntp = stackgap_alloc(&sg, sizeof(struct itimerval));
otp = stackgap_alloc(&sg, sizeof(struct itimerval));
timerclear(&tp.it_interval);
tp.it_value.tv_sec = SCARG(uap, sec);
tp.it_value.tv_usec = 0;
if ((error = copyout(&tp, ntp, sizeof(tp))) != 0)
return error;
SCARG(&sa, which) = ITIMER_REAL;
SCARG(&sa, itv) = ntp;
SCARG(&sa, oitv) = otp;
if ((error = sys_setitimer(p, &sa, retval)) != 0)
return error;
if ((error = copyin(otp, &tp, sizeof(tp))) != 0)
return error;
if (tp.it_value.tv_usec)
tp.it_value.tv_sec++;
*retval = (register_t) tp.it_value.tv_sec;
return 0;
}
int
svr4_sys_gettimeofday(p, v, retval)
register struct proc *p;
void *v;
register_t *retval;
{
struct svr4_sys_gettimeofday_args *uap = v;
if (SCARG(uap, tp)) {
struct timeval atv;
microtime(&atv);
return copyout(&atv, SCARG(uap, tp), sizeof (atv));
}
return 0;
}
int
svr4_sys_facl(p, v, retval)
register struct proc *p;
void *v;
register_t *retval;
{
struct svr4_sys_facl_args *uap = v;
*retval = 0;
switch (SCARG(uap, cmd)) {
case SVR4_SYS_SETACL:
/* We don't support acls on any filesystem */
return ENOSYS;
case SVR4_SYS_GETACL:
return copyout(retval, &SCARG(uap, num),
sizeof(SCARG(uap, num)));
case SVR4_SYS_GETACLCNT:
return 0;
default:
return EINVAL;
}
}
int
svr4_sys_acl(p, v, retval)
register struct proc *p;
void *v;
register_t *retval;
{
return svr4_sys_facl(p, v, retval); /* XXX: for now the same */
}
int
svr4_sys_auditsys(p, v, retval)
register struct proc *p;
void *v;
register_t *retval;
{
/*
* XXX: Big brother is *not* watching.
*/
return 0;
}
int
svr4_sys_memcntl(p, v, retval)
register struct proc *p;
void *v;
register_t *retval;
{
struct svr4_sys_memcntl_args *uap = v;
struct sys_mprotect_args ap;
SCARG(&ap, addr) = SCARG(uap, addr);
SCARG(&ap, len) = SCARG(uap, len);
SCARG(&ap, prot) = SCARG(uap, attr);
/* XXX: no locking, invalidating, or syncing supported */
return sys_mprotect(p, &ap, retval);
}
int
svr4_sys_nice(p, v, retval)
register struct proc *p;
void *v;
register_t *retval;
{
struct svr4_sys_nice_args *uap = v;
struct sys_setpriority_args ap;
int error;
SCARG(&ap, which) = PRIO_PROCESS;
SCARG(&ap, who) = 0;
SCARG(&ap, prio) = SCARG(uap, prio);
if ((error = sys_setpriority(p, &ap, retval)) != 0)
return error;
if ((error = sys_getpriority(p, &ap, retval)) != 0)
return error;
return 0;
}
/* ARGSUSED */
int
svr4_sys_setegid(p, v, retval)
struct proc *p;
void *v;
register_t *retval;
{
struct sys_setegid_args /* {
syscallarg(gid_t) egid;
} */ *uap = v;
#if defined(COMPAT_LINUX) && defined(i386)
if (SCARG(uap, egid) > 60000) {
/*
* One great fuckup deserves another. The Linux people
* made this their personality system call. But we can't
* tell if a binary is SVR4 or Linux until they do that
* system call, in some cases. So when we get it, and the
* value is out of some magical range, switch to Linux
* emulation and pray.
*/
extern struct emul emul_linux_elf;
p->p_emul = &emul_linux_elf;
p->p_os = OOS_LINUX;
#ifdef KTRACE
if (KTRPOINT(p, KTR_EMUL))
ktremul(p, p->p_emul->e_name);
#endif
return (0);
}
#else
(void)uap;
#endif
return (sys_setegid(p, v, retval));
}
int
svr4_sys_rdebug(p, v, retval)
struct proc *p;
void *v;
register_t *retval;
{
#ifdef COMPAT_SVR4_NCR
return (ENXIO);
#else
return (p->p_os == OOS_NCR ? ENXIO : sys_nosys(p, v, retval));
#endif
}
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