f2a2857bb3
the gating of system calls that cause modifications to the underlying filesystem. The gating can be enabled by any filesystem that needs to consistently suspend operations by adding the vop_stdgetwritemount to their set of vnops. Once gating is enabled, the function vfs_write_suspend stops all new write operations to a filesystem, allows any filesystem modifying system calls already in progress to complete, then sync's the filesystem to disk and returns. The function vfs_write_resume allows the suspended write operations to begin again. Gating is not added by default for all filesystems as for SMP systems it adds two extra locks to such critical kernel paths as the write system call. Thus, gating should only be added as needed. Details on the use and current status of snapshots in FFS can be found in /sys/ufs/ffs/README.snapshot so for brevity and timelyness is not included here. Unless and until you create a snapshot file, these changes should have no effect on your system (famous last words).
719 lines
16 KiB
C
719 lines
16 KiB
C
/*
|
|
* Copyright (c) 1998 Mark Newton
|
|
* Copyright (c) 1994, 1997 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. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by Christos Zoulas.
|
|
* 4. 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.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/namei.h>
|
|
#include <sys/proc.h>
|
|
#include <sys/file.h>
|
|
#include <sys/stat.h>
|
|
#include <sys/filedesc.h>
|
|
/*#include <sys/ioctl.h>*/
|
|
#include <sys/mount.h>
|
|
#include <sys/vnode.h>
|
|
#include <sys/unistd.h>
|
|
|
|
#include <sys/sysproto.h>
|
|
|
|
#include <svr4/svr4.h>
|
|
#include <svr4/svr4_types.h>
|
|
#include <svr4/svr4_signal.h>
|
|
#include <svr4/svr4_proto.h>
|
|
#include <svr4/svr4_util.h>
|
|
#include <svr4/svr4_fcntl.h>
|
|
|
|
static int svr4_to_bsd_flags __P((int));
|
|
static u_long svr4_to_bsd_cmd __P((u_long));
|
|
static int fd_revoke __P((struct proc *, int));
|
|
static int fd_truncate __P((struct proc *, int, struct flock *));
|
|
static int bsd_to_svr4_flags __P((int));
|
|
static void bsd_to_svr4_flock __P((struct flock *, struct svr4_flock *));
|
|
static void svr4_to_bsd_flock __P((struct svr4_flock *, struct flock *));
|
|
static void bsd_to_svr4_flock64 __P((struct flock *, struct svr4_flock64 *));
|
|
static void svr4_to_bsd_flock64 __P((struct svr4_flock64 *, struct flock *));
|
|
|
|
static u_long
|
|
svr4_to_bsd_cmd(cmd)
|
|
u_long cmd;
|
|
{
|
|
switch (cmd) {
|
|
case SVR4_F_DUPFD:
|
|
return F_DUPFD;
|
|
case SVR4_F_GETFD:
|
|
return F_GETFD;
|
|
case SVR4_F_SETFD:
|
|
return F_SETFD;
|
|
case SVR4_F_GETFL:
|
|
return F_GETFL;
|
|
case SVR4_F_SETFL:
|
|
return F_SETFL;
|
|
case SVR4_F_GETLK:
|
|
return F_GETLK;
|
|
case SVR4_F_SETLK:
|
|
return F_SETLK;
|
|
case SVR4_F_SETLKW:
|
|
return F_SETLKW;
|
|
default:
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
static int
|
|
svr4_to_bsd_flags(l)
|
|
int l;
|
|
{
|
|
int r = 0;
|
|
r |= (l & SVR4_O_RDONLY) ? O_RDONLY : 0;
|
|
r |= (l & SVR4_O_WRONLY) ? O_WRONLY : 0;
|
|
r |= (l & SVR4_O_RDWR) ? O_RDWR : 0;
|
|
r |= (l & SVR4_O_NDELAY) ? O_NONBLOCK : 0;
|
|
r |= (l & SVR4_O_APPEND) ? O_APPEND : 0;
|
|
r |= (l & SVR4_O_SYNC) ? O_FSYNC : 0;
|
|
r |= (l & SVR4_O_NONBLOCK) ? O_NONBLOCK : 0;
|
|
r |= (l & SVR4_O_PRIV) ? O_EXLOCK : 0;
|
|
r |= (l & SVR4_O_CREAT) ? O_CREAT : 0;
|
|
r |= (l & SVR4_O_TRUNC) ? O_TRUNC : 0;
|
|
r |= (l & SVR4_O_EXCL) ? O_EXCL : 0;
|
|
r |= (l & SVR4_O_NOCTTY) ? O_NOCTTY : 0;
|
|
return r;
|
|
}
|
|
|
|
static int
|
|
bsd_to_svr4_flags(l)
|
|
int l;
|
|
{
|
|
int r = 0;
|
|
r |= (l & O_RDONLY) ? SVR4_O_RDONLY : 0;
|
|
r |= (l & O_WRONLY) ? SVR4_O_WRONLY : 0;
|
|
r |= (l & O_RDWR) ? SVR4_O_RDWR : 0;
|
|
r |= (l & O_NDELAY) ? SVR4_O_NONBLOCK : 0;
|
|
r |= (l & O_APPEND) ? SVR4_O_APPEND : 0;
|
|
r |= (l & O_FSYNC) ? SVR4_O_SYNC : 0;
|
|
r |= (l & O_NONBLOCK) ? SVR4_O_NONBLOCK : 0;
|
|
r |= (l & O_EXLOCK) ? SVR4_O_PRIV : 0;
|
|
r |= (l & O_CREAT) ? SVR4_O_CREAT : 0;
|
|
r |= (l & O_TRUNC) ? SVR4_O_TRUNC : 0;
|
|
r |= (l & O_EXCL) ? SVR4_O_EXCL : 0;
|
|
r |= (l & O_NOCTTY) ? SVR4_O_NOCTTY : 0;
|
|
return r;
|
|
}
|
|
|
|
|
|
static void
|
|
bsd_to_svr4_flock(iflp, oflp)
|
|
struct flock *iflp;
|
|
struct svr4_flock *oflp;
|
|
{
|
|
switch (iflp->l_type) {
|
|
case F_RDLCK:
|
|
oflp->l_type = SVR4_F_RDLCK;
|
|
break;
|
|
case F_WRLCK:
|
|
oflp->l_type = SVR4_F_WRLCK;
|
|
break;
|
|
case F_UNLCK:
|
|
oflp->l_type = SVR4_F_UNLCK;
|
|
break;
|
|
default:
|
|
oflp->l_type = -1;
|
|
break;
|
|
}
|
|
|
|
oflp->l_whence = (short) iflp->l_whence;
|
|
oflp->l_start = (svr4_off_t) iflp->l_start;
|
|
oflp->l_len = (svr4_off_t) iflp->l_len;
|
|
oflp->l_sysid = 0;
|
|
oflp->l_pid = (svr4_pid_t) iflp->l_pid;
|
|
}
|
|
|
|
|
|
static void
|
|
svr4_to_bsd_flock(iflp, oflp)
|
|
struct svr4_flock *iflp;
|
|
struct flock *oflp;
|
|
{
|
|
switch (iflp->l_type) {
|
|
case SVR4_F_RDLCK:
|
|
oflp->l_type = F_RDLCK;
|
|
break;
|
|
case SVR4_F_WRLCK:
|
|
oflp->l_type = F_WRLCK;
|
|
break;
|
|
case SVR4_F_UNLCK:
|
|
oflp->l_type = F_UNLCK;
|
|
break;
|
|
default:
|
|
oflp->l_type = -1;
|
|
break;
|
|
}
|
|
|
|
oflp->l_whence = iflp->l_whence;
|
|
oflp->l_start = (off_t) iflp->l_start;
|
|
oflp->l_len = (off_t) iflp->l_len;
|
|
oflp->l_pid = (pid_t) iflp->l_pid;
|
|
|
|
}
|
|
|
|
static void
|
|
bsd_to_svr4_flock64(iflp, oflp)
|
|
struct flock *iflp;
|
|
struct svr4_flock64 *oflp;
|
|
{
|
|
switch (iflp->l_type) {
|
|
case F_RDLCK:
|
|
oflp->l_type = SVR4_F_RDLCK;
|
|
break;
|
|
case F_WRLCK:
|
|
oflp->l_type = SVR4_F_WRLCK;
|
|
break;
|
|
case F_UNLCK:
|
|
oflp->l_type = SVR4_F_UNLCK;
|
|
break;
|
|
default:
|
|
oflp->l_type = -1;
|
|
break;
|
|
}
|
|
|
|
oflp->l_whence = (short) iflp->l_whence;
|
|
oflp->l_start = (svr4_off64_t) iflp->l_start;
|
|
oflp->l_len = (svr4_off64_t) iflp->l_len;
|
|
oflp->l_sysid = 0;
|
|
oflp->l_pid = (svr4_pid_t) iflp->l_pid;
|
|
}
|
|
|
|
|
|
static void
|
|
svr4_to_bsd_flock64(iflp, oflp)
|
|
struct svr4_flock64 *iflp;
|
|
struct flock *oflp;
|
|
{
|
|
switch (iflp->l_type) {
|
|
case SVR4_F_RDLCK:
|
|
oflp->l_type = F_RDLCK;
|
|
break;
|
|
case SVR4_F_WRLCK:
|
|
oflp->l_type = F_WRLCK;
|
|
break;
|
|
case SVR4_F_UNLCK:
|
|
oflp->l_type = F_UNLCK;
|
|
break;
|
|
default:
|
|
oflp->l_type = -1;
|
|
break;
|
|
}
|
|
|
|
oflp->l_whence = iflp->l_whence;
|
|
oflp->l_start = (off_t) iflp->l_start;
|
|
oflp->l_len = (off_t) iflp->l_len;
|
|
oflp->l_pid = (pid_t) iflp->l_pid;
|
|
|
|
}
|
|
|
|
|
|
static int
|
|
fd_revoke(p, fd)
|
|
struct proc *p;
|
|
int fd;
|
|
{
|
|
struct filedesc *fdp = p->p_fd;
|
|
struct file *fp;
|
|
struct vnode *vp;
|
|
struct mount *mp;
|
|
struct vattr vattr;
|
|
int error, *retval;
|
|
|
|
retval = p->p_retval;
|
|
if ((u_int)fd >= fdp->fd_nfiles || (fp = fdp->fd_ofiles[fd]) == NULL)
|
|
return EBADF;
|
|
|
|
if (fp->f_type != DTYPE_VNODE)
|
|
return EINVAL;
|
|
|
|
vp = (struct vnode *) fp->f_data;
|
|
|
|
if (vp->v_type != VCHR && vp->v_type != VBLK) {
|
|
error = EINVAL;
|
|
goto out;
|
|
}
|
|
|
|
if ((error = VOP_GETATTR(vp, &vattr, p->p_ucred, p)) != 0)
|
|
goto out;
|
|
|
|
if (p->p_ucred->cr_uid != vattr.va_uid &&
|
|
(error = suser(p)) != 0)
|
|
goto out;
|
|
|
|
if ((error = vn_start_write(vp, &mp, V_WAIT | PCATCH)) != 0)
|
|
goto out;
|
|
if (vcount(vp) > 1)
|
|
VOP_REVOKE(vp, REVOKEALL);
|
|
vn_finished_write(mp);
|
|
out:
|
|
vrele(vp);
|
|
return error;
|
|
}
|
|
|
|
|
|
static int
|
|
fd_truncate(p, fd, flp)
|
|
struct proc *p;
|
|
int fd;
|
|
struct flock *flp;
|
|
{
|
|
struct filedesc *fdp = p->p_fd;
|
|
struct file *fp;
|
|
off_t start, length;
|
|
struct vnode *vp;
|
|
struct vattr vattr;
|
|
int error, *retval;
|
|
struct ftruncate_args ft;
|
|
|
|
retval = p->p_retval;
|
|
|
|
/*
|
|
* We only support truncating the file.
|
|
*/
|
|
if ((u_int)fd >= fdp->fd_nfiles || (fp = fdp->fd_ofiles[fd]) == NULL)
|
|
return EBADF;
|
|
|
|
vp = (struct vnode *)fp->f_data;
|
|
if (fp->f_type != DTYPE_VNODE || vp->v_type == VFIFO)
|
|
return ESPIPE;
|
|
|
|
if ((error = VOP_GETATTR(vp, &vattr, p->p_ucred, p)) != 0)
|
|
return error;
|
|
|
|
length = vattr.va_size;
|
|
|
|
switch (flp->l_whence) {
|
|
case SEEK_CUR:
|
|
start = fp->f_offset + flp->l_start;
|
|
break;
|
|
|
|
case SEEK_END:
|
|
start = flp->l_start + length;
|
|
break;
|
|
|
|
case SEEK_SET:
|
|
start = flp->l_start;
|
|
break;
|
|
|
|
default:
|
|
return EINVAL;
|
|
}
|
|
|
|
if (start + flp->l_len < length) {
|
|
/* We don't support free'ing in the middle of the file */
|
|
return EINVAL;
|
|
}
|
|
|
|
SCARG(&ft, fd) = fd;
|
|
SCARG(&ft, length) = start;
|
|
|
|
return ftruncate(p, &ft);
|
|
}
|
|
|
|
int
|
|
svr4_sys_open(p, uap)
|
|
register struct proc *p;
|
|
struct svr4_sys_open_args *uap;
|
|
{
|
|
int error, retval;
|
|
struct open_args cup;
|
|
|
|
caddr_t sg = stackgap_init();
|
|
CHECKALTEXIST(p, &sg, SCARG(uap, path));
|
|
|
|
(&cup)->path = uap->path;
|
|
(&cup)->flags = svr4_to_bsd_flags(uap->flags);
|
|
(&cup)->mode = uap->mode;
|
|
error = open(p, &cup);
|
|
|
|
if (error) {
|
|
/* uprintf("svr4_open(%s, 0x%0x, 0%o): %d\n", uap->path,
|
|
uap->flags, uap->mode, error);*/
|
|
return error;
|
|
}
|
|
|
|
retval = p->p_retval[0];
|
|
|
|
if (!(SCARG(&cup, flags) & O_NOCTTY) && SESS_LEADER(p) &&
|
|
!(p->p_flag & P_CONTROLT)) {
|
|
#if defined(NOTYET)
|
|
struct filedesc *fdp = p->p_fd;
|
|
struct file *fp = fdp->fd_ofiles[retval];
|
|
|
|
/* ignore any error, just give it a try */
|
|
if (fp->f_type == DTYPE_VNODE)
|
|
fo_ioctl(fp, TIOCSCTTY, (caddr_t) 0, p);
|
|
#endif
|
|
}
|
|
return error;
|
|
}
|
|
|
|
int
|
|
svr4_sys_open64(p, uap)
|
|
register struct proc *p;
|
|
struct svr4_sys_open64_args *uap;
|
|
{
|
|
return svr4_sys_open(p, (struct svr4_sys_open_args *)uap);
|
|
}
|
|
|
|
int
|
|
svr4_sys_creat(p, uap)
|
|
register struct proc *p;
|
|
struct svr4_sys_creat_args *uap;
|
|
{
|
|
struct open_args cup;
|
|
|
|
caddr_t sg = stackgap_init();
|
|
CHECKALTEXIST(p, &sg, SCARG(uap, path));
|
|
|
|
SCARG(&cup, path) = SCARG(uap, path);
|
|
SCARG(&cup, mode) = SCARG(uap, mode);
|
|
SCARG(&cup, flags) = O_WRONLY | O_CREAT | O_TRUNC;
|
|
|
|
return open(p, &cup);
|
|
}
|
|
|
|
int
|
|
svr4_sys_creat64(p, uap)
|
|
register struct proc *p;
|
|
struct svr4_sys_creat64_args *uap;
|
|
{
|
|
return svr4_sys_creat(p, (struct svr4_sys_creat_args *)uap);
|
|
}
|
|
|
|
int
|
|
svr4_sys_llseek(p, v)
|
|
register struct proc *p;
|
|
struct svr4_sys_llseek_args *v;
|
|
{
|
|
struct svr4_sys_llseek_args *uap = v;
|
|
struct lseek_args ap;
|
|
|
|
SCARG(&ap, fd) = SCARG(uap, fd);
|
|
|
|
#if BYTE_ORDER == BIG_ENDIAN
|
|
SCARG(&ap, offset) = (((long long) SCARG(uap, offset1)) << 32) |
|
|
SCARG(uap, offset2);
|
|
#else
|
|
SCARG(&ap, offset) = (((long long) SCARG(uap, offset2)) << 32) |
|
|
SCARG(uap, offset1);
|
|
#endif
|
|
SCARG(&ap, whence) = SCARG(uap, whence);
|
|
|
|
return lseek(p, &ap);
|
|
}
|
|
|
|
int
|
|
svr4_sys_access(p, uap)
|
|
register struct proc *p;
|
|
struct svr4_sys_access_args *uap;
|
|
{
|
|
struct access_args cup;
|
|
int *retval;
|
|
|
|
caddr_t sg = stackgap_init();
|
|
CHECKALTEXIST(p, &sg, SCARG(uap, path));
|
|
|
|
retval = p->p_retval;
|
|
|
|
SCARG(&cup, path) = SCARG(uap, path);
|
|
SCARG(&cup, flags) = SCARG(uap, flags);
|
|
|
|
return access(p, &cup);
|
|
}
|
|
|
|
#if defined(NOTYET)
|
|
int
|
|
svr4_sys_pread(p, uap)
|
|
register struct proc *p;
|
|
struct svr4_sys_pread_args *uap;
|
|
{
|
|
struct pread_args pra;
|
|
|
|
/*
|
|
* Just translate the args structure and call the NetBSD
|
|
* pread(2) system call (offset type is 64-bit in NetBSD).
|
|
*/
|
|
SCARG(&pra, fd) = SCARG(uap, fd);
|
|
SCARG(&pra, buf) = SCARG(uap, buf);
|
|
SCARG(&pra, nbyte) = SCARG(uap, nbyte);
|
|
SCARG(&pra, offset) = SCARG(uap, off);
|
|
|
|
return pread(p, &pra);
|
|
}
|
|
#endif
|
|
|
|
#if defined(NOTYET)
|
|
int
|
|
svr4_sys_pread64(p, v, retval)
|
|
register struct proc *p;
|
|
void *v;
|
|
register_t *retval;
|
|
{
|
|
|
|
struct svr4_sys_pread64_args *uap = v;
|
|
struct sys_pread_args pra;
|
|
|
|
/*
|
|
* Just translate the args structure and call the NetBSD
|
|
* pread(2) system call (offset type is 64-bit in NetBSD).
|
|
*/
|
|
SCARG(&pra, fd) = SCARG(uap, fd);
|
|
SCARG(&pra, buf) = SCARG(uap, buf);
|
|
SCARG(&pra, nbyte) = SCARG(uap, nbyte);
|
|
SCARG(&pra, offset) = SCARG(uap, off);
|
|
|
|
return (sys_pread(p, &pra, retval));
|
|
}
|
|
#endif /* NOTYET */
|
|
|
|
#if defined(NOTYET)
|
|
int
|
|
svr4_sys_pwrite(p, uap)
|
|
register struct proc *p;
|
|
struct svr4_sys_pwrite_args *uap;
|
|
{
|
|
struct pwrite_args pwa;
|
|
|
|
/*
|
|
* Just translate the args structure and call the NetBSD
|
|
* pwrite(2) system call (offset type is 64-bit in NetBSD).
|
|
*/
|
|
SCARG(&pwa, fd) = SCARG(uap, fd);
|
|
SCARG(&pwa, buf) = SCARG(uap, buf);
|
|
SCARG(&pwa, nbyte) = SCARG(uap, nbyte);
|
|
SCARG(&pwa, offset) = SCARG(uap, off);
|
|
|
|
return pwrite(p, &pwa);
|
|
}
|
|
#endif
|
|
|
|
#if defined(NOTYET)
|
|
int
|
|
svr4_sys_pwrite64(p, v, retval)
|
|
register struct proc *p;
|
|
void *v;
|
|
register_t *retval;
|
|
{
|
|
struct svr4_sys_pwrite64_args *uap = v;
|
|
struct sys_pwrite_args pwa;
|
|
|
|
/*
|
|
* Just translate the args structure and call the NetBSD
|
|
* pwrite(2) system call (offset type is 64-bit in NetBSD).
|
|
*/
|
|
SCARG(&pwa, fd) = SCARG(uap, fd);
|
|
SCARG(&pwa, buf) = SCARG(uap, buf);
|
|
SCARG(&pwa, nbyte) = SCARG(uap, nbyte);
|
|
SCARG(&pwa, offset) = SCARG(uap, off);
|
|
|
|
return (sys_pwrite(p, &pwa, retval));
|
|
}
|
|
#endif /* NOTYET */
|
|
|
|
int
|
|
svr4_sys_fcntl(p, uap)
|
|
register struct proc *p;
|
|
struct svr4_sys_fcntl_args *uap;
|
|
{
|
|
int error;
|
|
struct fcntl_args fa;
|
|
int *retval;
|
|
|
|
retval = p->p_retval;
|
|
|
|
SCARG(&fa, fd) = SCARG(uap, fd);
|
|
SCARG(&fa, cmd) = svr4_to_bsd_cmd(SCARG(uap, cmd));
|
|
|
|
switch (SCARG(&fa, cmd)) {
|
|
case F_DUPFD:
|
|
case F_GETFD:
|
|
case F_SETFD:
|
|
SCARG(&fa, arg) = (long) SCARG(uap, arg);
|
|
return fcntl(p, &fa);
|
|
|
|
case F_GETFL:
|
|
SCARG(&fa, arg) = (long) SCARG(uap, arg);
|
|
error = fcntl(p, &fa);
|
|
if (error)
|
|
return error;
|
|
*retval = bsd_to_svr4_flags(*retval);
|
|
return error;
|
|
|
|
case F_SETFL:
|
|
{
|
|
/*
|
|
* we must save the O_ASYNC flag, as that is
|
|
* handled by ioctl(_, I_SETSIG, _) emulation.
|
|
*/
|
|
long cmd;
|
|
int flags;
|
|
|
|
DPRINTF(("Setting flags 0x%x\n", SCARG(uap, arg)));
|
|
cmd = SCARG(&fa, cmd); /* save it for a while */
|
|
|
|
SCARG(&fa, cmd) = F_GETFL;
|
|
if ((error = fcntl(p, &fa)) != 0)
|
|
return error;
|
|
flags = *retval;
|
|
flags &= O_ASYNC;
|
|
flags |= svr4_to_bsd_flags((u_long) SCARG(uap, arg));
|
|
SCARG(&fa, cmd) = cmd;
|
|
SCARG(&fa, arg) = (long) flags;
|
|
return fcntl(p, &fa);
|
|
}
|
|
|
|
case F_GETLK:
|
|
case F_SETLK:
|
|
case F_SETLKW:
|
|
{
|
|
struct svr4_flock ifl;
|
|
struct flock *flp, fl;
|
|
caddr_t sg = stackgap_init();
|
|
|
|
flp = stackgap_alloc(&sg, sizeof(struct flock));
|
|
SCARG(&fa, arg) = (long) flp;
|
|
|
|
error = copyin(SCARG(uap, arg), &ifl, sizeof ifl);
|
|
if (error)
|
|
return error;
|
|
|
|
svr4_to_bsd_flock(&ifl, &fl);
|
|
|
|
error = copyout(&fl, flp, sizeof fl);
|
|
if (error)
|
|
return error;
|
|
|
|
error = fcntl(p, &fa);
|
|
if (error || SCARG(&fa, cmd) != F_GETLK)
|
|
return error;
|
|
|
|
error = copyin(flp, &fl, sizeof fl);
|
|
if (error)
|
|
return error;
|
|
|
|
bsd_to_svr4_flock(&fl, &ifl);
|
|
|
|
return copyout(&ifl, SCARG(uap, arg), sizeof ifl);
|
|
}
|
|
case -1:
|
|
switch (SCARG(uap, cmd)) {
|
|
case SVR4_F_DUP2FD:
|
|
{
|
|
struct dup2_args du;
|
|
|
|
SCARG(&du, from) = SCARG(uap, fd);
|
|
SCARG(&du, to) = (int)SCARG(uap, arg);
|
|
error = dup2(p, &du);
|
|
if (error)
|
|
return error;
|
|
*retval = SCARG(&du, to);
|
|
return 0;
|
|
}
|
|
|
|
case SVR4_F_FREESP:
|
|
{
|
|
struct svr4_flock ifl;
|
|
struct flock fl;
|
|
|
|
error = copyin(SCARG(uap, arg), &ifl,
|
|
sizeof ifl);
|
|
if (error)
|
|
return error;
|
|
svr4_to_bsd_flock(&ifl, &fl);
|
|
return fd_truncate(p, SCARG(uap, fd), &fl);
|
|
}
|
|
|
|
case SVR4_F_GETLK64:
|
|
case SVR4_F_SETLK64:
|
|
case SVR4_F_SETLKW64:
|
|
{
|
|
struct svr4_flock64 ifl;
|
|
struct flock *flp, fl;
|
|
caddr_t sg = stackgap_init();
|
|
|
|
flp = stackgap_alloc(&sg, sizeof(struct flock));
|
|
SCARG(&fa, arg) = (long) flp;
|
|
|
|
error = copyin(SCARG(uap, arg), &ifl,
|
|
sizeof ifl);
|
|
if (error)
|
|
return error;
|
|
|
|
svr4_to_bsd_flock64(&ifl, &fl);
|
|
|
|
error = copyout(&fl, flp, sizeof fl);
|
|
if (error)
|
|
return error;
|
|
|
|
error = fcntl(p, &fa);
|
|
if (error || SCARG(&fa, cmd) != F_GETLK)
|
|
return error;
|
|
|
|
error = copyin(flp, &fl, sizeof fl);
|
|
if (error)
|
|
return error;
|
|
|
|
bsd_to_svr4_flock64(&fl, &ifl);
|
|
|
|
return copyout(&ifl, SCARG(uap, arg),
|
|
sizeof ifl);
|
|
}
|
|
|
|
case SVR4_F_FREESP64:
|
|
{
|
|
struct svr4_flock64 ifl;
|
|
struct flock fl;
|
|
|
|
error = copyin(SCARG(uap, arg), &ifl,
|
|
sizeof ifl);
|
|
if (error)
|
|
return error;
|
|
svr4_to_bsd_flock64(&ifl, &fl);
|
|
return fd_truncate(p, SCARG(uap, fd), &fl);
|
|
}
|
|
|
|
case SVR4_F_REVOKE:
|
|
return fd_revoke(p, SCARG(uap, fd));
|
|
|
|
default:
|
|
return ENOSYS;
|
|
}
|
|
|
|
default:
|
|
return ENOSYS;
|
|
}
|
|
}
|