d39fe2ffaf
Slight modification from previous fix. Also, fix problem where an entry would be skipped next call if not enough room in buffer current call.
452 lines
12 KiB
C
452 lines
12 KiB
C
/*-
|
|
* Copyright (c) 1994-1995 Søren Schmidt
|
|
* 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
|
|
* in this position and unchanged.
|
|
* 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 withough 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.
|
|
*
|
|
* $Id: linux_file.c,v 1.2 1995/08/28 00:50:08 swallace Exp $
|
|
*/
|
|
|
|
#include <i386/linux/linux.h>
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/fcntl.h>
|
|
#include <sys/file.h>
|
|
#include <sys/filedesc.h>
|
|
#include <sys/proc.h>
|
|
#include <sys/ioctl.h>
|
|
#include <sys/stat.h>
|
|
#include <sys/vnode.h>
|
|
#include <sys/malloc.h>
|
|
#include <sys/exec.h>
|
|
#include <sys/dirent.h>
|
|
#include <vm/vm.h>
|
|
#include <ufs/ufs/dir.h>
|
|
|
|
|
|
struct linux_creat_args {
|
|
char *path;
|
|
int mode;
|
|
};
|
|
|
|
int
|
|
linux_creat(struct proc *p, struct linux_creat_args *args, int *retval)
|
|
{
|
|
struct {
|
|
char *path;
|
|
int flags;
|
|
int mode;
|
|
} bsd_open_args;
|
|
|
|
#ifdef DEBUG
|
|
printf("Linux-emul(%d): creat(%s, %d)\n",
|
|
p->p_pid, args->path, args->mode);
|
|
#endif
|
|
bsd_open_args.path = args->path;
|
|
bsd_open_args.mode = args->mode;
|
|
bsd_open_args.flags = O_WRONLY | O_CREAT | O_TRUNC;
|
|
return open(p, &bsd_open_args, retval);
|
|
}
|
|
|
|
struct linux_open_args {
|
|
char *path;
|
|
int flags;
|
|
int mode;
|
|
};
|
|
|
|
int
|
|
linux_open(struct proc *p, struct linux_open_args *args, int *retval)
|
|
{
|
|
struct {
|
|
char *path;
|
|
int flags;
|
|
int mode;
|
|
} bsd_open_args;
|
|
int error;
|
|
|
|
#ifdef DEBUG
|
|
printf("Linux-emul(%d): open(%s, 0x%x, 0x%x)\n",
|
|
p->p_pid, args->path, args->flags, args->mode);
|
|
#endif
|
|
bsd_open_args.flags = 0;
|
|
if (args->flags & LINUX_O_RDONLY)
|
|
bsd_open_args.flags |= O_RDONLY;
|
|
if (args->flags & LINUX_O_WRONLY)
|
|
bsd_open_args.flags |= O_WRONLY;
|
|
if (args->flags & LINUX_O_RDWR)
|
|
bsd_open_args.flags |= O_RDWR;
|
|
if (args->flags & LINUX_O_NDELAY)
|
|
bsd_open_args.flags |= O_NONBLOCK;
|
|
if (args->flags & LINUX_O_APPEND)
|
|
bsd_open_args.flags |= O_APPEND;
|
|
if (args->flags & LINUX_O_SYNC)
|
|
bsd_open_args.flags |= O_FSYNC;
|
|
if (args->flags & LINUX_O_NONBLOCK)
|
|
bsd_open_args.flags |= O_NONBLOCK;
|
|
if (args->flags & LINUX_FASYNC)
|
|
bsd_open_args.flags |= O_ASYNC;
|
|
if (args->flags & LINUX_O_CREAT)
|
|
bsd_open_args.flags |= O_CREAT;
|
|
if (args->flags & LINUX_O_TRUNC)
|
|
bsd_open_args.flags |= O_TRUNC;
|
|
if (args->flags & LINUX_O_EXCL)
|
|
bsd_open_args.flags |= O_EXCL;
|
|
if (args->flags & LINUX_O_NOCTTY)
|
|
bsd_open_args.flags |= O_NOCTTY;
|
|
bsd_open_args.path = args->path;
|
|
bsd_open_args.mode = args->mode;
|
|
|
|
error = open(p, &bsd_open_args, retval);
|
|
if (!error && !(bsd_open_args.flags & O_NOCTTY) &&
|
|
SESS_LEADER(p) && !(p->p_flag & P_CONTROLT)) {
|
|
struct filedesc *fdp = p->p_fd;
|
|
struct file *fp = fdp->fd_ofiles[*retval];
|
|
|
|
if (fp->f_type == DTYPE_VNODE)
|
|
(fp->f_ops->fo_ioctl)(fp, TIOCSCTTY, (caddr_t) 0, p);
|
|
}
|
|
return error;
|
|
}
|
|
|
|
struct linux_flock {
|
|
short l_type;
|
|
short l_whence;
|
|
linux_off_t l_start;
|
|
linux_off_t l_len;
|
|
linux_pid_t l_pid;
|
|
};
|
|
|
|
static void
|
|
linux_to_bsd_flock(struct linux_flock *linux_flock, struct flock *bsd_flock)
|
|
{
|
|
switch (linux_flock->l_type) {
|
|
case LINUX_F_RDLCK:
|
|
bsd_flock->l_type = F_RDLCK;
|
|
break;
|
|
case LINUX_F_WRLCK:
|
|
bsd_flock->l_type = F_WRLCK;
|
|
break;
|
|
case LINUX_F_UNLCK:
|
|
bsd_flock->l_type = F_UNLCK;
|
|
break;
|
|
}
|
|
bsd_flock->l_whence = linux_flock->l_whence;
|
|
bsd_flock->l_start = (off_t)linux_flock->l_start;
|
|
bsd_flock->l_len = (off_t)linux_flock->l_len;
|
|
bsd_flock->l_pid = (pid_t)linux_flock->l_pid;
|
|
}
|
|
|
|
static void
|
|
bsd_to_linux_flock(struct flock *bsd_flock, struct linux_flock *linux_flock)
|
|
{
|
|
switch (bsd_flock->l_type) {
|
|
case F_RDLCK:
|
|
linux_flock->l_type = LINUX_F_RDLCK;
|
|
break;
|
|
case F_WRLCK:
|
|
linux_flock->l_type = LINUX_F_WRLCK;
|
|
break;
|
|
case F_UNLCK:
|
|
linux_flock->l_type = LINUX_F_UNLCK;
|
|
break;
|
|
}
|
|
linux_flock->l_whence = bsd_flock->l_whence;
|
|
linux_flock->l_start = (linux_off_t)bsd_flock->l_start;
|
|
linux_flock->l_len = (linux_off_t)bsd_flock->l_len;
|
|
linux_flock->l_pid = (linux_pid_t)bsd_flock->l_pid;
|
|
}
|
|
|
|
struct linux_fcntl_args {
|
|
int fd;
|
|
int cmd;
|
|
int arg;
|
|
};
|
|
|
|
int
|
|
linux_fcntl(struct proc *p, struct linux_fcntl_args *args, int *retval)
|
|
{
|
|
int error, result;
|
|
struct fcntl_args {
|
|
int fd;
|
|
int cmd;
|
|
int arg;
|
|
} fcntl_args;
|
|
struct linux_flock linux_flock;
|
|
struct flock *bsd_flock =
|
|
(struct flock *)ua_alloc_init(sizeof(struct flock));
|
|
|
|
#ifdef DEBUG
|
|
printf("Linux-emul(%d): fcntl(%d, %08x, *)\n",
|
|
p->p_pid, args->fd, args->cmd);
|
|
#endif
|
|
fcntl_args.fd = args->fd;
|
|
fcntl_args.arg = 0;
|
|
|
|
switch (args->cmd) {
|
|
case LINUX_F_DUPFD:
|
|
fcntl_args.cmd = F_DUPFD;
|
|
return fcntl(p, &fcntl_args, retval);
|
|
|
|
case LINUX_F_GETFD:
|
|
fcntl_args.cmd = F_GETFD;
|
|
return fcntl(p, &fcntl_args, retval);
|
|
|
|
case LINUX_F_SETFD:
|
|
fcntl_args.cmd = F_SETFD;
|
|
return fcntl(p, &fcntl_args, retval);
|
|
|
|
case LINUX_F_GETFL:
|
|
fcntl_args.cmd = F_GETFL;
|
|
error = fcntl(p, &fcntl_args, &result);
|
|
*retval = 0;
|
|
if (result & O_RDONLY) *retval |= LINUX_O_RDONLY;
|
|
if (result & O_WRONLY) *retval |= LINUX_O_WRONLY;
|
|
if (result & O_RDWR) *retval |= LINUX_O_RDWR;
|
|
if (result & O_NDELAY) *retval |= LINUX_O_NONBLOCK;
|
|
if (result & O_APPEND) *retval |= LINUX_O_APPEND;
|
|
if (result & O_FSYNC) *retval |= LINUX_O_SYNC;
|
|
return error;
|
|
|
|
case LINUX_F_SETFL:
|
|
if (args->arg & LINUX_O_NDELAY) fcntl_args.arg |= O_NONBLOCK;
|
|
if (args->arg & LINUX_O_APPEND) fcntl_args.arg |= O_APPEND;
|
|
if (args->arg & LINUX_O_SYNC) fcntl_args.arg |= O_FSYNC;
|
|
fcntl_args.cmd = F_SETFL;
|
|
return fcntl(p, &fcntl_args, retval);
|
|
|
|
case LINUX_F_GETLK:
|
|
if ((error = copyin((caddr_t)args->arg, (caddr_t)&linux_flock,
|
|
sizeof(struct linux_flock))))
|
|
return error;
|
|
linux_to_bsd_flock(&linux_flock, bsd_flock);
|
|
fcntl_args.cmd = F_GETLK;
|
|
fcntl_args.arg = (int)bsd_flock;
|
|
if (error = fcntl(p, &fcntl_args, retval))
|
|
return error;
|
|
bsd_to_linux_flock(bsd_flock, &linux_flock);
|
|
return copyout((caddr_t)&linux_flock, (caddr_t)args->arg,
|
|
sizeof(struct linux_flock));
|
|
|
|
case LINUX_F_SETLK:
|
|
if ((error = copyin((caddr_t)args->arg, (caddr_t)&linux_flock,
|
|
sizeof(struct linux_flock))))
|
|
return error;
|
|
linux_to_bsd_flock(&linux_flock, bsd_flock);
|
|
fcntl_args.cmd = F_SETLK;
|
|
fcntl_args.arg = (int)bsd_flock;
|
|
return fcntl(p, &fcntl_args, retval);
|
|
|
|
case LINUX_F_SETLKW:
|
|
if ((error = copyin((caddr_t)args->arg, (caddr_t)&linux_flock,
|
|
sizeof(struct linux_flock))))
|
|
return error;
|
|
linux_to_bsd_flock(&linux_flock, bsd_flock);
|
|
fcntl_args.cmd = F_SETLKW;
|
|
fcntl_args.arg = (int)bsd_flock;
|
|
return fcntl(p, &fcntl_args, retval);
|
|
|
|
case LINUX_F_SETOWN:
|
|
fcntl_args.cmd = F_SETOWN;
|
|
return fcntl(p, &fcntl_args, retval);
|
|
|
|
case LINUX_F_GETOWN:
|
|
fcntl_args.cmd = F_GETOWN;
|
|
return fcntl(p, &fcntl_args, retval);
|
|
}
|
|
return EINVAL;
|
|
}
|
|
|
|
struct linux_lseek_args {
|
|
int fdes;
|
|
unsigned long off;
|
|
int whence;
|
|
};
|
|
|
|
int
|
|
linux_lseek(struct proc *p, struct linux_lseek_args *args, int *retval)
|
|
{
|
|
|
|
struct lseek_args {
|
|
int fdes;
|
|
int pad;
|
|
off_t off;
|
|
int whence;
|
|
} tmp_args;
|
|
off_t tmp_retval;
|
|
int error;
|
|
|
|
#ifdef DEBUG
|
|
printf("Linux-emul(%d): lseek(%d, %d, %d)\n",
|
|
p->p_pid, args->fdes, args->off, args->whence);
|
|
#endif
|
|
tmp_args.fdes = args->fdes;
|
|
tmp_args.off = (off_t)args->off;
|
|
tmp_args.whence = args->whence;
|
|
error = lseek(p, &tmp_args, &tmp_retval);
|
|
*retval = (int)tmp_retval;
|
|
return error;
|
|
}
|
|
|
|
struct linux_dirent {
|
|
long dino;
|
|
linux_off_t doff;
|
|
unsigned short dreclen;
|
|
char dname[LINUX_NAME_MAX + 1];
|
|
};
|
|
|
|
#define LINUX_RECLEN(de,namlen) \
|
|
ALIGN((((char *)&(de)->dname - (char *)de) + (namlen) + 1))
|
|
|
|
struct linux_readdir_args {
|
|
int fd;
|
|
struct linux_dirent *dent;
|
|
unsigned int count;
|
|
};
|
|
|
|
int
|
|
linux_readdir(struct proc *p, struct linux_readdir_args *args, int *retval)
|
|
{
|
|
register struct dirent *bdp;
|
|
struct vnode *vp;
|
|
caddr_t inp, buf; /* BSD-format */
|
|
int len, reclen; /* BSD-format */
|
|
caddr_t outp; /* Linux-format */
|
|
int resid, linuxreclen=0; /* Linux-format */
|
|
struct file *fp;
|
|
struct uio auio;
|
|
struct iovec aiov;
|
|
struct vattr va;
|
|
off_t off;
|
|
struct linux_dirent linux_dirent;
|
|
int buflen, error, eofflag, nbytes, justone, blockoff;
|
|
|
|
#ifdef DEBUG
|
|
printf("Linux-emul(%d): readdir(%d, *, %d)\n",
|
|
p->p_pid, args->fd, args->count);
|
|
#endif
|
|
if ((error = getvnode(p->p_fd, args->fd, &fp)) != 0) {
|
|
return (error);
|
|
}
|
|
|
|
if ((fp->f_flag & FREAD) == 0)
|
|
return (EBADF);
|
|
|
|
vp = (struct vnode *) fp->f_data;
|
|
|
|
if (vp->v_type != VDIR)
|
|
return (EINVAL);
|
|
|
|
if ((error = VOP_GETATTR(vp, &va, p->p_ucred, p))) {
|
|
return error;
|
|
}
|
|
|
|
nbytes = args->count;
|
|
if (nbytes == 1) {
|
|
nbytes = sizeof (struct linux_dirent);
|
|
justone = 1;
|
|
}
|
|
else
|
|
justone = 0;
|
|
|
|
off = fp->f_offset;
|
|
blockoff = off % DIRBLKSIZ;
|
|
buflen = max(DIRBLKSIZ, nbytes + blockoff);
|
|
buflen = min(buflen, MAXBSIZE);
|
|
buf = malloc(buflen, M_TEMP, M_WAITOK);
|
|
VOP_LOCK(vp);
|
|
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 - (off_t)blockoff;
|
|
|
|
error = VOP_READDIR(vp, &auio, fp->f_cred, &eofflag, 0, 0);
|
|
if (error) {
|
|
goto out;
|
|
}
|
|
|
|
inp = buf;
|
|
inp += blockoff;
|
|
outp = (caddr_t) args->dent;
|
|
resid = nbytes;
|
|
if ((len = buflen - auio.uio_resid - blockoff) == 0) {
|
|
goto eof;
|
|
}
|
|
|
|
while (len > 0) {
|
|
bdp = (struct dirent *) inp;
|
|
reclen = bdp->d_reclen;
|
|
if (reclen & 3) {
|
|
printf("linux_readdir: reclen=%d\n", reclen);
|
|
error = EFAULT;
|
|
goto out;
|
|
}
|
|
|
|
if (bdp->d_fileno == 0) {
|
|
inp += reclen;
|
|
off += reclen;
|
|
len -= reclen;
|
|
continue;
|
|
}
|
|
linuxreclen = LINUX_RECLEN(&linux_dirent, bdp->d_namlen);
|
|
if (reclen > len || resid < linuxreclen) {
|
|
outp++;
|
|
break;
|
|
}
|
|
linux_dirent.dino = (long) bdp->d_fileno;
|
|
linux_dirent.doff = (linux_off_t) linuxreclen;
|
|
linux_dirent.dreclen = (u_short) bdp->d_namlen;
|
|
strcpy(linux_dirent.dname, bdp->d_name);
|
|
if ((error = copyout((caddr_t)&linux_dirent, outp, linuxreclen))) {
|
|
goto out;
|
|
}
|
|
inp += reclen;
|
|
off += reclen;
|
|
outp += linuxreclen;
|
|
resid -= linuxreclen;
|
|
len -= reclen;
|
|
if (justone)
|
|
break;
|
|
}
|
|
|
|
if (outp == (caddr_t) args->dent)
|
|
goto again;
|
|
fp->f_offset = off;
|
|
|
|
if (justone)
|
|
nbytes = resid + linuxreclen;
|
|
|
|
eof:
|
|
*retval = nbytes - resid;
|
|
out:
|
|
VOP_UNLOCK(vp);
|
|
free(buf, M_TEMP);
|
|
return error;
|
|
}
|