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NetBSD/sys/compat/svr4/svr4_misc.c
jdolecek 02eb342b57 Make sure that the pointer to old parent process for ptraced children 
gets reset properly when the old parent exits before the child. A flag
is set in old parent process when the child is reparented in ptrace(2).
If it's set when process is exiting, all running processes have their
'old parent process' pointer checked and reset if appropriate. Also
change to use 'struct proc *' pointer directly, rather than pid_t.
This fixes security/14444 by David Sainty.

Reviewed by Christos Zoulas.
2002-07-25 20:04:02 +00:00

1690 lines
37 KiB
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Raw Blame History

/* $NetBSD: svr4_misc.c,v 1.98 2002/07/25 20:04:04 jdolecek Exp $ */
/*-
* Copyright (c) 1994 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Christos Zoulas.
*
* 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. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``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 FOUNDATION OR CONTRIBUTORS
* 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/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: svr4_misc.c,v 1.98 2002/07/25 20:04:04 jdolecek Exp $");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/namei.h>
#include <sys/dirent.h>
#include <sys/proc.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/pool.h>
#include <sys/mbuf.h>
#include <sys/mman.h>
#include <sys/mount.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_lwp.h>
#include <compat/svr4/svr4_ucontext.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/svr4/svr4_mman.h>
#include <machine/cpu.h>
#include <uvm/uvm_extern.h>
static int svr4_to_bsd_mmap_flags __P((int));
static __inline clock_t timeval_to_clock_t __P((struct timeval *));
static int svr4_setinfo __P((struct proc *, int, svr4_siginfo_t *));
struct svr4_hrtcntl_args;
static int svr4_hrtcntl __P((struct proc *, struct svr4_hrtcntl_args *,
register_t *));
static void bsd_statfs_to_svr4_statvfs __P((const struct statfs *,
struct svr4_statvfs *));
static void bsd_statfs_to_svr4_statvfs64 __P((const struct statfs *,
struct svr4_statvfs64 *));
static struct proc *svr4_pfind __P((pid_t pid));
static int svr4_mknod __P((struct proc *, register_t *, const char *,
svr4_mode_t, svr4_dev_t));
int
svr4_sys_wait(p, v, retval)
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));
int st, sig;
SCARG(&w4, rusage) = NULL;
SCARG(&w4, options) = 0;
if (SCARG(uap, status) == NULL) {
caddr_t sg = stackgap_init(p, 0);
SCARG(&w4, status) = stackgap_alloc(p, &sg, sz);
}
else
SCARG(&w4, status) = SCARG(uap, status);
SCARG(&w4, pid) = WAIT_ANY;
if ((error = sys_wait4(p, &w4, retval)) != 0)
return error;
if ((error = copyin(SCARG(&w4, status), &st, sizeof(st))) != 0)
return error;
if (WIFSIGNALED(st)) {
sig = WTERMSIG(st);
if (sig >= 0 && sig < NSIG)
st = (st & ~0177) | native_to_svr4_signo[sig];
} else if (WIFSTOPPED(st)) {
sig = WSTOPSIG(st);
if (sig >= 0 && sig < NSIG)
st = (st & ~0xff00) | (native_to_svr4_signo[sig] << 8);
}
/*
* It looks like wait(2) on svr4/solaris/2.4 returns
* the status in retval[1], and the pid on retval[0].
*/
retval[1] = st;
if (SCARG(uap, status))
if ((error = copyout(&st, SCARG(uap, status), sizeof(st))) != 0)
return error;
return 0;
}
int
svr4_sys_execv(p, v, retval)
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, 0);
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)
struct proc *p;
void *v;
register_t *retval;
{
struct svr4_sys_execve_args /* {
syscallarg(const char *) path;
syscallarg(char **) argv;
syscallarg(char **) envp;
} */ *uap = v;
struct sys_execve_args ap;
caddr_t sg;
sg = stackgap_init(p, 0);
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)
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_sys_getdents64(p, v, retval)
struct proc *p;
void *v;
register_t *retval;
{
struct svr4_sys_getdents64_args *uap = v;
struct dirent *bdp;
struct vnode *vp;
caddr_t inp, buf; /* BSD-format */
int len, reclen; /* BSD-format */
caddr_t outp; /* SVR4-format */
int resid, svr4_reclen; /* SVR4-format */
struct file *fp;
struct uio auio;
struct iovec aiov;
struct svr4_dirent64 idb;
off_t off; /* true file offset */
int buflen, error, eofflag;
off_t *cookiebuf = NULL, *cookie;
int ncookies;
/* getvnode() will use the descriptor for us */
if ((error = getvnode(p->p_fd, SCARG(uap, fd), &fp)) != 0)
return (error);
if ((fp->f_flag & FREAD) == 0) {
error = EBADF;
goto out1;
}
vp = (struct vnode *)fp->f_data;
if (vp->v_type != VDIR) {
error = EINVAL;
goto out1;
}
buflen = min(MAXBSIZE, SCARG(uap, nbytes));
buf = malloc(buflen, M_TEMP, M_WAITOK);
vn_lock(vp, LK_EXCLUSIVE | LK_RETRY);
off = fp->f_offset;
again:
aiov.iov_base = buf;
aiov.iov_len = buflen;
auio.uio_iov = &aiov;
auio.uio_iovcnt = 1;
auio.uio_rw = UIO_READ;
auio.uio_segflg = UIO_SYSSPACE;
auio.uio_procp = p;
auio.uio_resid = buflen;
auio.uio_offset = off;
/*
* First we read into the malloc'ed buffer, then
* we massage it into user space, one record at a time.
*/
error = VOP_READDIR(vp, &auio, fp->f_cred, &eofflag, &cookiebuf,
&ncookies);
if (error)
goto out;
inp = buf;
outp = (char *) SCARG(uap, dp);
resid = SCARG(uap, nbytes);
if ((len = buflen - auio.uio_resid) == 0)
goto eof;
for (cookie = cookiebuf; len > 0; len -= reclen) {
bdp = (struct dirent *)inp;
reclen = bdp->d_reclen;
if (reclen & 3)
panic("svr4_getdents64: bad reclen");
if (bdp->d_fileno == 0) {
inp += reclen; /* it is a hole; squish it out */
off = *cookie++;
continue;
}
svr4_reclen = SVR4_RECLEN(&idb, bdp->d_namlen);
if (reclen > len || resid < svr4_reclen) {
/* entry too big for buffer, so just stop */
outp++;
break;
}
off = *cookie++; /* each entry points to the next */
/*
* 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)off;
idb.d_reclen = (u_short)svr4_reclen;
strcpy(idb.d_name, bdp->d_name);
if ((error = copyout((caddr_t)&idb, outp, svr4_reclen)))
goto out;
/* advance past this real entry */
inp += reclen;
/* advance output past SVR4-shaped entry */
outp += svr4_reclen;
resid -= svr4_reclen;
}
/* if we squished out the whole block, try again */
if (outp == (char *) SCARG(uap, dp))
goto again;
fp->f_offset = off; /* update the vnode offset */
eof:
*retval = SCARG(uap, nbytes) - resid;
out:
VOP_UNLOCK(vp, 0);
if (cookiebuf)
free(cookiebuf, M_TEMP);
free(buf, M_TEMP);
out1:
FILE_UNUSE(fp, p);
return error;
}
int
svr4_sys_getdents(p, v, retval)
struct proc *p;
void *v;
register_t *retval;
{
struct svr4_sys_getdents_args *uap = v;
struct dirent *bdp;
struct vnode *vp;
caddr_t inp, buf; /* BSD-format */
int len, reclen; /* BSD-format */
caddr_t outp; /* SVR4-format */
int resid, svr4_reclen; /* SVR4-format */
struct file *fp;
struct uio auio;
struct iovec aiov;
struct svr4_dirent idb;
off_t off; /* true file offset */
int buflen, error, eofflag;
off_t *cookiebuf = NULL, *cookie;
int ncookies;
/* getvnode() will use the descriptor for us */
if ((error = getvnode(p->p_fd, SCARG(uap, fd), &fp)) != 0)
return (error);
if ((fp->f_flag & FREAD) == 0) {
error = EBADF;
goto out1;
}
vp = (struct vnode *)fp->f_data;
if (vp->v_type != VDIR) {
error = EINVAL;
goto out1;
}
buflen = min(MAXBSIZE, SCARG(uap, nbytes));
buf = malloc(buflen, M_TEMP, M_WAITOK);
vn_lock(vp, LK_EXCLUSIVE | LK_RETRY);
off = fp->f_offset;
again:
aiov.iov_base = buf;
aiov.iov_len = buflen;
auio.uio_iov = &aiov;
auio.uio_iovcnt = 1;
auio.uio_rw = UIO_READ;
auio.uio_segflg = UIO_SYSSPACE;
auio.uio_procp = p;
auio.uio_resid = buflen;
auio.uio_offset = off;
/*
* First we read into the malloc'ed buffer, then
* we massage it into user space, one record at a time.
*/
error = VOP_READDIR(vp, &auio, fp->f_cred, &eofflag, &cookiebuf,
&ncookies);
if (error)
goto out;
inp = buf;
outp = SCARG(uap, buf);
resid = SCARG(uap, nbytes);
if ((len = buflen - auio.uio_resid) == 0)
goto eof;
for (cookie = cookiebuf; len > 0; len -= reclen) {
bdp = (struct dirent *)inp;
reclen = bdp->d_reclen;
if (reclen & 3)
panic("svr4_getdents: bad reclen");
off = *cookie++; /* each entry points to the next */
if ((off >> 32) != 0) {
compat_offseterr(vp, "svr4_getdents");
error = EINVAL;
goto out;
}
if (bdp->d_fileno == 0) {
inp += reclen; /* it is a hole; squish it out */
continue;
}
svr4_reclen = SVR4_RECLEN(&idb, bdp->d_namlen);
if (reclen > len || resid < svr4_reclen) {
/* entry too big for buffer, so just stop */
outp++;
break;
}
/*
* 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_ino_t)bdp->d_fileno;
idb.d_off = (svr4_off_t)off;
idb.d_reclen = (u_short)svr4_reclen;
strcpy(idb.d_name, bdp->d_name);
if ((error = copyout((caddr_t)&idb, outp, svr4_reclen)))
goto out;
/* advance past this real entry */
inp += reclen;
/* advance output past SVR4-shaped entry */
outp += svr4_reclen;
resid -= svr4_reclen;
}
/* if we squished out the whole block, try again */
if (outp == SCARG(uap, buf))
goto again;
fp->f_offset = off; /* update the vnode offset */
eof:
*retval = SCARG(uap, nbytes) - resid;
out:
VOP_UNLOCK(vp, 0);
if (cookiebuf)
free(cookiebuf, M_TEMP);
free(buf, M_TEMP);
out1:
FILE_UNUSE(fp, p);
return error;
}
static int
svr4_to_bsd_mmap_flags(f)
int f;
{
int type = f & SVR4_MAP_TYPE;
int nf;
if (type != MAP_PRIVATE && type != MAP_SHARED)
return -1;
nf = f & SVR4_MAP_COPYFLAGS;
if (f & SVR4_MAP_ANON)
nf |= MAP_ANON;
return nf;
}
int
svr4_sys_mmap(p, v, retval)
struct proc *p;
void *v;
register_t *retval;
{
struct svr4_sys_mmap_args *uap = v;
struct sys_mmap_args mm;
void *rp;
/*
* 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;
if ((SCARG(&mm, flags) = svr4_to_bsd_mmap_flags(SCARG(uap, flags))) == -1)
return EINVAL;
SCARG(&mm, prot) = SCARG(uap, prot);
SCARG(&mm, len) = SCARG(uap, len);
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)
struct proc *p;
void *v;
register_t *retval;
{
struct svr4_sys_mmap64_args *uap = v;
struct sys_mmap_args mm;
void *rp;
/*
* 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;
if ((SCARG(&mm, flags) = svr4_to_bsd_mmap_flags(SCARG(uap, flags))) == -1)
return EINVAL;
SCARG(&mm, prot) = SCARG(uap, prot);
SCARG(&mm, len) = SCARG(uap, len);
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);
}
static int
svr4_mknod(p, retval, path, mode, dev)
struct proc *p;
register_t *retval;
const char *path;
svr4_mode_t mode;
svr4_dev_t dev;
{
caddr_t sg = stackgap_init(p, 0);
CHECK_ALT_CREAT(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)
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)
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)
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_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;
case SVR4_CONFIG_MQ_OPEN_MAX:
#ifdef SYSVMSG
*retval = msginfo.msgmni;
#else
*retval = 0;
#endif
break;
case SVR4_CONFIG_MQ_PRIO_MAX:
*retval = 0; /* XXX: Don't know */
break;
case SVR4_CONFIG_RTSIG_MAX:
*retval = 0;
break;
case SVR4_CONFIG_SEM_NSEMS_MAX:
#ifdef SYSVSEM
*retval = seminfo.semmni;
#else
*retval = 0;
#endif
break;
case SVR4_CONFIG_SEM_VALUE_MAX:
#ifdef SYSVSEM
*retval = seminfo.semvmx;
#else
*retval = 0;
#endif
break;
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.free; /* XXX: free instead of total */
break;
case SVR4_CONFIG_AVPHYS_PAGES:
*retval = uvmexp.active; /* XXX: active instead of avg */
break;
case SVR4_CONFIG_COHERENCY:
*retval = 0; /* XXX */
break;
case SVR4_CONFIG_SPLIT_CACHE:
*retval = 0; /* XXX */
break;
case SVR4_CONFIG_ICACHESZ:
*retval = 256; /* XXX */
break;
case SVR4_CONFIG_DCACHESZ:
*retval = 256; /* XXX */
break;
case SVR4_CONFIG_ICACHELINESZ:
*retval = 64; /* XXX */
break;
case SVR4_CONFIG_DCACHELINESZ:
*retval = 64; /* XXX */
break;
case SVR4_CONFIG_ICACHEBLKSZ:
*retval = 64; /* XXX */
break;
case SVR4_CONFIG_DCACHEBLKSZ:
*retval = 64; /* XXX */
break;
case SVR4_CONFIG_DCACHETBLKSZ:
*retval = 64; /* XXX */
break;
case SVR4_CONFIG_ICACHE_ASSOC:
*retval = 1; /* XXX */
break;
case SVR4_CONFIG_DCACHE_ASSOC:
*retval = 1; /* XXX */
break;
case SVR4_CONFIG_MAXPID:
*retval = PID_MAX;
break;
case SVR4_CONFIG_STACK_PROT:
*retval = PROT_READ|PROT_WRITE|PROT_EXEC;
break;
default:
return EINVAL;
}
return 0;
}
/* ARGSUSED */
int
svr4_sys_break(p, v, retval)
struct proc *p;
void *v;
register_t *retval;
{
struct svr4_sys_break_args *uap = v;
struct vmspace *vm = p->p_vmspace;
vaddr_t new, old;
int error;
old = (vaddr_t) vm->vm_daddr;
new = round_page((vaddr_t)SCARG(uap, nsize));
if (new - old > p->p_rlimit[RLIMIT_DATA].rlim_cur && new > old)
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)));
if (new > old) {
error = uvm_map(&vm->vm_map, &old, new - old, 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, error = %d\n", error);
return error;
}
vm->vm_dsize += btoc(new - old);
} else if (new < old) {
uvm_deallocate(&vm->vm_map, new, old - new);
vm->vm_dsize -= btoc(old - new);
}
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)
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, 0);
ru = stackgap_alloc(p, &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)
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;
if (*retval == -1)
*retval = 0x7fffffff;
return 0;
case SVR4_SFILLIM:
{
int error;
struct sys_setrlimit_args srl;
struct rlimit krl;
caddr_t sg = stackgap_init(p, 0);
struct rlimit *url = (struct rlimit *)
stackgap_alloc(p, &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;
if (*retval == -1)
*retval = 0x7fffffff;
return 0;
}
case SVR4_GMEMLIM:
{
struct vmspace *vm = p->p_vmspace;
register_t r = p->p_rlimit[RLIMIT_DATA].rlim_cur;
if (r == -1)
r = 0x7fffffff;
r += (long) vm->vm_daddr;
if (r < 0)
r = 0x7fffffff;
*retval = r;
return 0;
}
case SVR4_GDESLIM:
*retval = p->p_rlimit[RLIMIT_NOFILE].rlim_cur;
if (*retval == -1)
*retval = 0x7fffffff;
return 0;
default:
return EINVAL;
}
}
static struct proc *
svr4_pfind(pid)
pid_t pid;
{
struct proc *p = NULL;
proclist_lock_read();
/* look in the live processes */
if ((p = pfind(pid)) != NULL)
goto out;
/* look in the zombies */
for (p = zombproc.lh_first; p != 0; p = p->p_list.le_next)
if (p->p_pid == pid)
goto out;
out:
proclist_unlock_read();
return p;
}
int
svr4_sys_pgrpsys(p, v, retval)
struct proc *p;
void *v;
register_t *retval;
{
struct svr4_sys_pgrpsys_args *uap = v;
switch (SCARG(uap, cmd)) {
case 1: /* setpgrp() */
/*
* SVR4 setpgrp() (which takes no arguments) has the
* semantics that the session ID is also created anew, so
* in almost every sense, setpgrp() is identical to
* setsid() for SVR4. (Under BSD, the difference is that
* a setpgid(0,0) will not create a new session.)
*/
sys_setsid(p, NULL, retval);
/*FALLTHROUGH*/
case 0: /* getpgrp() */
*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;
/*
* This has already been initialized to the pid of
* the session leader.
*/
*retval = (register_t) p->p_session->s_sid;
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)
struct proc *p;
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)
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;
int sig;
memset(&i, 0, sizeof(i));
i.si_signo = SVR4_SIGCHLD;
i.si_errno = 0; /* XXX? */
if (p) {
i.si_pid = p->p_pid;
if (p->p_stat == SZOMB) {
i.si_stime = p->p_ru->ru_stime.tv_sec;
i.si_utime = p->p_ru->ru_utime.tv_sec;
}
else {
i.si_stime = p->p_stats->p_ru.ru_stime.tv_sec;
i.si_utime = p->p_stats->p_ru.ru_utime.tv_sec;
}
}
if (WIFEXITED(st)) {
i.si_status = WEXITSTATUS(st);
i.si_code = SVR4_CLD_EXITED;
} else if (WIFSTOPPED(st)) {
sig = WSTOPSIG(st);
if (sig >= 0 && sig < NSIG)
i.si_status = native_to_svr4_signo[sig];
if (i.si_status == SVR4_SIGCONT)
i.si_code = SVR4_CLD_CONTINUED;
else
i.si_code = SVR4_CLD_STOPPED;
} else {
sig = WTERMSIG(st);
if (sig >= 0 && sig < NSIG)
i.si_status = native_to_svr4_signo[sig];
if (WCOREDUMP(st))
i.si_code = SVR4_CLD_DUMPED;
else
i.si_code = SVR4_CLD_KILLED;
}
DPRINTF(("siginfo [pid %ld signo %d code %d errno %d status %d]\n",
(long) i.si_pid,
i.si_signo, i.si_code, i.si_errno, i.si_status));
return copyout(&i, s, sizeof(i));
}
int
svr4_sys_waitsys(p, v, retval)
struct proc *p;
void *v;
register_t *retval;
{
struct svr4_sys_waitsys_args *uap = v;
int nfound, error, s;
struct proc *q, *t;
switch (SCARG(uap, grp)) {
case SVR4_P_PID:
break;
case SVR4_P_PGID:
SCARG(uap, id) = -p->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;
for (q = p->p_children.lh_first; q != 0; q = q->p_sibling.le_next) {
if (SCARG(uap, id) != WAIT_ANY &&
q->p_pid != SCARG(uap, id) &&
q->p_pgid != -SCARG(uap, id)) {
DPRINTF(("pid %d pgid %d != %d\n", q->p_pid,
q->p_pgid, SCARG(uap, id)));
continue;
}
nfound++;
if (q->p_stat == SZOMB &&
((SCARG(uap, options) & (SVR4_WEXITED|SVR4_WTRAPPED)))) {
*retval = 0;
DPRINTF(("found %d\n", q->p_pid));
if ((error = svr4_setinfo(q, q->p_xstat,
SCARG(uap, info))) != 0)
return error;
if ((SCARG(uap, options) & SVR4_WNOWAIT)) {
DPRINTF(("Don't wait\n"));
return 0;
}
/*
* If we got the child via ptrace(2) or procfs, and
* the parent is different (meaning the process was
* attached, rather than run as a child), then we need
* to give it back to the old parent, and send the
* parent a SIGCHLD. The rest of the cleanup will be
* done when the old parent waits on the child.
*/
if ((q->p_flag & P_TRACED) && q->p_opptr != q->p_pptr){
t = q->p_opptr;
proc_reparent(q, t ? t : initproc);
q->p_opptr = NULL;
q->p_flag &= ~(P_TRACED|P_WAITED|P_FSTRACE);
psignal(q->p_pptr, SIGCHLD);
wakeup((caddr_t)q->p_pptr);
return (0);
}
q->p_xstat = 0;
ruadd(&p->p_stats->p_cru, q->p_ru);
pool_put(&rusage_pool, q->p_ru);
/*
* Finally finished with old proc entry.
* Unlink it from its process group and free it.
*/
leavepgrp(q);
s = proclist_lock_write();
LIST_REMOVE(q, p_list); /* off zombproc */
proclist_unlock_write(s);
LIST_REMOVE(q, p_sibling);
/*
* Decrement the count of procs running with this uid.
*/
(void)chgproccnt(q->p_cred->p_ruid, -1);
/*
* Free up credentials.
*/
if (--q->p_cred->p_refcnt == 0) {
crfree(q->p_cred->pc_ucred);
pool_put(&pcred_pool, q->p_cred);
}
/*
* Release reference to text vnode
*/
if (q->p_textvp)
vrele(q->p_textvp);
pool_put(&proc_pool, q);
nprocs--;
return 0;
}
if (q->p_stat == SSTOP && (q->p_flag & P_WAITED) == 0 &&
(q->p_flag & P_TRACED ||
(SCARG(uap, options) & (SVR4_WSTOPPED|SVR4_WCONTINUED)))) {
DPRINTF(("jobcontrol %d\n", q->p_pid));
if (((SCARG(uap, options) & SVR4_WNOWAIT)) == 0)
q->p_flag |= P_WAITED;
*retval = 0;
return svr4_setinfo(q, W_STOPCODE(q->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)p, 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];
memcpy(sfs->f_basetype, bfs->f_fstypename, 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;
memcpy(sfs->f_fstr, bfs->f_fstypename, sizeof(sfs->f_fstr)); /* XXX */
memset(sfs->f_filler, 0, 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];
memcpy(sfs->f_basetype, bfs->f_fstypename, 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;
memcpy(sfs->f_fstr, bfs->f_fstypename, sizeof(sfs->f_fstr)); /* XXX */
memset(sfs->f_filler, 0, sizeof(sfs->f_filler));
}
int
svr4_sys_statvfs(p, v, retval)
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, 0);
struct statfs *fs = stackgap_alloc(p, &sg, sizeof(struct statfs));
struct statfs bfs;
struct svr4_statvfs sfs;
int error;
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)
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, 0);
struct statfs *fs = stackgap_alloc(p, &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_statvfs64(p, v, retval)
struct proc *p;
void *v;
register_t *retval;
{
struct svr4_sys_statvfs64_args *uap = v;
struct sys_statfs_args fs_args;
caddr_t sg = stackgap_init(p, 0);
struct statfs *fs = stackgap_alloc(p, &sg, sizeof(struct statfs));
struct statfs bfs;
struct svr4_statvfs64 sfs;
int error;
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_statvfs64(&bfs, &sfs);
return copyout(&sfs, SCARG(uap, fs), sizeof(sfs));
}
int
svr4_sys_fstatvfs64(p, v, retval)
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, 0);
struct statfs *fs = stackgap_alloc(p, &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)
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, 0);
ntp = stackgap_alloc(p, &sg, sizeof(struct itimerval));
otp = stackgap_alloc(p, &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)
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)
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)
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)
struct proc *p;
void *v;
register_t *retval;
{
/*
* XXX: Big brother is *not* watching.
*/
return 0;
}
int
svr4_sys_memcntl(p, v, retval)
struct proc *p;
void *v;
register_t *retval;
{
struct svr4_sys_memcntl_args *uap = v;
switch (SCARG(uap, cmd)) {
case SVR4_MC_SYNC:
{
struct sys___msync13_args msa;
SCARG(&msa, addr) = SCARG(uap, addr);
SCARG(&msa, len) = SCARG(uap, len);
SCARG(&msa, flags) = (int)(u_long)SCARG(uap, arg);
return sys___msync13(p, &msa, retval);
}
case SVR4_MC_ADVISE:
{
struct sys_madvise_args maa;
SCARG(&maa, addr) = SCARG(uap, addr);
SCARG(&maa, len) = SCARG(uap, len);
SCARG(&maa, behav) = (int)(u_long)SCARG(uap, arg);
return sys_madvise(p, &maa, retval);
}
case SVR4_MC_LOCK:
case SVR4_MC_UNLOCK:
case SVR4_MC_LOCKAS:
case SVR4_MC_UNLOCKAS:
return EOPNOTSUPP;
default:
return ENOSYS;
}
}
int
svr4_sys_nice(p, v, retval)
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;
}
int
svr4_sys_resolvepath(p, v, retval)
struct proc *p;
void *v;
register_t *retval;
{
struct svr4_sys_resolvepath_args *uap = v;
struct nameidata nd;
int error;
size_t len;
NDINIT(&nd, LOOKUP, NOFOLLOW | SAVENAME, UIO_USERSPACE,
SCARG(uap, path), p);
if ((error = namei(&nd)) != 0)
return error;
if ((error = copyoutstr(nd.ni_cnd.cn_pnbuf, SCARG(uap, buf),
SCARG(uap, bufsiz), &len)) != 0)
goto bad;
*retval = len;
bad:
vrele(nd.ni_vp);
PNBUF_PUT(nd.ni_cnd.cn_pnbuf);
return error;
}
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