mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-24 11:29:10 +00:00
d66a506616
netscape-2.0 for Linux running all the Java stuff. The scrollbars are now working, at least on my machine. (whew! :-) I'm uncomfortable with the size of this commit, but it's too inter-dependant to easily seperate out. The main changes: COMPAT_LINUX is *GONE*. Most of the code has been moved out of the i386 machine dependent section into the linux emulator itself. The int 0x80 syscall code was almost identical to the lcall 7,0 code and a minor tweak allows them to both be used with the same C code. All kernels can now just modload the lkm and it'll DTRT without having to rebuild the kernel first. Like IBCS2, you can statically compile it in with "options LINUX". A pile of new syscalls implemented, including getdents(), llseek(), readv(), writev(), msync(), personality(). The Linux-ELF libraries want to use some of these. linux_select() now obeys Linux semantics, ie: returns the time remaining of the timeout value rather than leaving it the original value. Quite a few bugs removed, including incorrect arguments being used in syscalls.. eg: mixups between passing the sigset as an int, vs passing it as a pointer and doing a copyin(), missing return values, unhandled cases, SIOC* ioctls, etc. The build for the code has changed. i386/conf/files now knows how to build linux_genassym and generate linux_assym.h on the fly. Supporting changes elsewhere in the kernel: The user-mode signal trampoline has moved from the U area to immediately below the top of the stack (below PS_STRINGS). This allows the different binary emulations to have their own signal trampoline code (which gets rid of the hardwired syscall 103 (sigreturn on BSD, syslog on Linux)) and so that the emulator can provide the exact "struct sigcontext *" argument to the program's signal handlers. The sigstack's "ss_flags" now uses SS_DISABLE and SS_ONSTACK flags, which have the same values as the re-used SA_DISABLE and SA_ONSTACK which are intended for sigaction only. This enables the support of a SA_RESETHAND flag to sigaction to implement the gross SYSV and Linux SA_ONESHOT signal semantics where the signal handler is reset when it's triggered. makesyscalls.sh no longer appends the struct sysentvec on the end of the generated init_sysent.c code. It's a lot saner to have it in a seperate file rather than trying to update the structure inside the awk script. :-) At exec time, the dozen bytes or so of signal trampoline code are copied to the top of the user's stack, rather than obtaining the trampoline code the old way by getting a clone of the parent's user area. This allows Linux and native binaries to freely exec each other without getting trampolines mixed up.
298 lines
8.3 KiB
C
298 lines
8.3 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_stats.c,v 1.4 1996/01/30 12:23:17 peter Exp $
|
|
*/
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/dirent.h>
|
|
#include <sys/file.h>
|
|
#include <sys/filedesc.h>
|
|
#include <sys/proc.h>
|
|
#include <sys/mount.h>
|
|
#include <sys/namei.h>
|
|
#include <sys/socketvar.h>
|
|
#include <sys/stat.h>
|
|
#include <sys/vnode.h>
|
|
#include <sys/pipe.h>
|
|
|
|
#include <i386/linux/linux.h>
|
|
#include <i386/linux/linux_proto.h>
|
|
#include <i386/linux/linux_util.h>
|
|
|
|
struct linux_newstat {
|
|
unsigned short stat_dev;
|
|
unsigned short __pad1;
|
|
unsigned long stat_ino;
|
|
unsigned short stat_mode;
|
|
unsigned short stat_nlink;
|
|
unsigned short stat_uid;
|
|
unsigned short stat_gid;
|
|
unsigned short stat_rdev;
|
|
unsigned short __pad2;
|
|
unsigned long stat_size;
|
|
unsigned long stat_blksize;
|
|
unsigned long stat_blocks;
|
|
unsigned long stat_atime;
|
|
unsigned long __unused1;
|
|
unsigned long stat_mtime;
|
|
unsigned long __unused2;
|
|
unsigned long stat_ctime;
|
|
unsigned long __unused3;
|
|
unsigned long __unused4;
|
|
unsigned long __unused5;
|
|
};
|
|
|
|
|
|
static int
|
|
newstat_copyout(struct stat *buf, void *ubuf)
|
|
{
|
|
struct linux_newstat tbuf;
|
|
|
|
tbuf.stat_dev = (buf->st_dev & 0xff) | ((buf->st_dev & 0xff00)<<10);
|
|
tbuf.stat_ino = buf->st_ino;
|
|
tbuf.stat_mode = buf->st_mode;
|
|
tbuf.stat_nlink = buf->st_nlink;
|
|
tbuf.stat_uid = buf->st_uid;
|
|
tbuf.stat_gid = buf->st_gid;
|
|
tbuf.stat_rdev = buf->st_rdev;
|
|
tbuf.stat_size = buf->st_size;
|
|
tbuf.stat_atime = buf->st_atime;
|
|
tbuf.stat_mtime = buf->st_mtime;
|
|
tbuf.stat_ctime = buf->st_ctime;
|
|
tbuf.stat_blksize = buf->st_blksize;
|
|
tbuf.stat_blocks = buf->st_blocks;
|
|
return copyout(&tbuf, ubuf, sizeof(tbuf));
|
|
}
|
|
|
|
int
|
|
linux_newstat(struct proc *p, struct linux_newstat_args *args, int *retval)
|
|
{
|
|
struct stat buf;
|
|
struct nameidata nd;
|
|
int error;
|
|
caddr_t sg;
|
|
|
|
sg = stackgap_init();
|
|
CHECKALTEXIST(p, &sg, args->path);
|
|
|
|
#ifdef DEBUG
|
|
printf("Linux-emul(%d): newstat(%s, *)\n", p->p_pid, args->path);
|
|
#endif
|
|
NDINIT(&nd, LOOKUP, LOCKLEAF|FOLLOW, UIO_USERSPACE, args->path, p);
|
|
error = namei(&nd);
|
|
if (!error) {
|
|
error = vn_stat(nd.ni_vp, &buf, p);
|
|
vput(nd.ni_vp);
|
|
}
|
|
if (!error)
|
|
error = newstat_copyout(&buf, args->buf);
|
|
return error;
|
|
}
|
|
|
|
/*
|
|
* Get file status; this version does not follow links.
|
|
*/
|
|
int
|
|
linux_newlstat(p, uap, retval)
|
|
struct proc *p;
|
|
struct linux_newlstat_args *uap;
|
|
int *retval;
|
|
{
|
|
int error;
|
|
struct vnode *vp, *dvp;
|
|
struct stat sb, sb1;
|
|
struct nameidata nd;
|
|
caddr_t sg;
|
|
|
|
sg = stackgap_init();
|
|
CHECKALTEXIST(p, &sg, uap->path);
|
|
|
|
#ifdef DEBUG
|
|
printf("Linux-emul(%d): newlstat(%s, *)\n", p->p_pid, uap->path);
|
|
#endif
|
|
NDINIT(&nd, LOOKUP, NOFOLLOW | LOCKLEAF | LOCKPARENT, UIO_USERSPACE,
|
|
uap->path, p);
|
|
error = namei(&nd);
|
|
if (error)
|
|
return (error);
|
|
/*
|
|
* For symbolic links, always return the attributes of its
|
|
* containing directory, except for mode, size, and links.
|
|
*/
|
|
vp = nd.ni_vp;
|
|
dvp = nd.ni_dvp;
|
|
if (vp->v_type != VLNK) {
|
|
if (dvp == vp)
|
|
vrele(dvp);
|
|
else
|
|
vput(dvp);
|
|
error = vn_stat(vp, &sb, p);
|
|
vput(vp);
|
|
if (error)
|
|
return (error);
|
|
} else {
|
|
error = vn_stat(dvp, &sb, p);
|
|
vput(dvp);
|
|
if (error) {
|
|
vput(vp);
|
|
return (error);
|
|
}
|
|
error = vn_stat(vp, &sb1, p);
|
|
vput(vp);
|
|
if (error)
|
|
return (error);
|
|
sb.st_mode &= ~S_IFDIR;
|
|
sb.st_mode |= S_IFLNK;
|
|
sb.st_nlink = sb1.st_nlink;
|
|
sb.st_size = sb1.st_size;
|
|
sb.st_blocks = sb1.st_blocks;
|
|
}
|
|
error = newstat_copyout(&sb, uap->buf);
|
|
return (error);
|
|
}
|
|
|
|
int
|
|
linux_newfstat(struct proc *p, struct linux_newfstat_args *args, int *retval)
|
|
{
|
|
struct filedesc *fdp = p->p_fd;
|
|
struct file *fp;
|
|
struct stat buf;
|
|
int error;
|
|
|
|
#ifdef DEBUG
|
|
printf("Linux-emul(%d): newfstat(%d, *)\n", p->p_pid, args->fd);
|
|
#endif
|
|
if ((unsigned)args->fd >= fdp->fd_nfiles
|
|
|| (fp = fdp->fd_ofiles[args->fd]) == NULL)
|
|
return EBADF;
|
|
switch (fp->f_type) {
|
|
case DTYPE_VNODE:
|
|
error = vn_stat((struct vnode *)fp->f_data, &buf, p);
|
|
break;
|
|
case DTYPE_SOCKET:
|
|
error = soo_stat((struct socket *)fp->f_data, &buf);
|
|
break;
|
|
case DTYPE_PIPE:
|
|
error = pipe_stat((struct pipe *)fp->f_data, &buf);
|
|
break;
|
|
default:
|
|
panic("LINUX newfstat");
|
|
}
|
|
if (!error)
|
|
error = newstat_copyout(&buf, args->buf);
|
|
return error;
|
|
}
|
|
|
|
struct linux_statfs_buf {
|
|
long ftype;
|
|
long fbsize;
|
|
long fblocks;
|
|
long fbfree;
|
|
long fbavail;
|
|
long ffiles;
|
|
long fffree;
|
|
linux_fsid_t ffsid;
|
|
long fnamelen;
|
|
long fspare[6];
|
|
};
|
|
|
|
int
|
|
linux_statfs(struct proc *p, struct linux_statfs_args *args, int *retval)
|
|
{
|
|
struct mount *mp;
|
|
struct nameidata *ndp;
|
|
struct statfs *bsd_statfs;
|
|
struct nameidata nd;
|
|
struct linux_statfs_buf linux_statfs_buf;
|
|
int error;
|
|
caddr_t sg;
|
|
|
|
sg = stackgap_init();
|
|
CHECKALTEXIST(p, &sg, args->path);
|
|
|
|
#ifdef DEBUG
|
|
printf("Linux-emul(%d): statfs(%s, *)\n", p->p_pid, args->path);
|
|
#endif
|
|
ndp = &nd;
|
|
NDINIT(ndp, LOOKUP, FOLLOW, UIO_USERSPACE, args->path, curproc);
|
|
if (error = namei(ndp))
|
|
return error;
|
|
mp = ndp->ni_vp->v_mount;
|
|
bsd_statfs = &mp->mnt_stat;
|
|
vrele(ndp->ni_vp);
|
|
if (error = VFS_STATFS(mp, bsd_statfs, p))
|
|
return error;
|
|
bsd_statfs->f_flags = mp->mnt_flag & MNT_VISFLAGMASK;
|
|
linux_statfs_buf.ftype = bsd_statfs->f_type;
|
|
linux_statfs_buf.fbsize = bsd_statfs->f_bsize;
|
|
linux_statfs_buf.fblocks = bsd_statfs->f_blocks;
|
|
linux_statfs_buf.fbfree = bsd_statfs->f_bfree;
|
|
linux_statfs_buf.fbavail = bsd_statfs->f_bavail;
|
|
linux_statfs_buf.fffree = bsd_statfs->f_ffree;
|
|
linux_statfs_buf.ffiles = bsd_statfs->f_files;
|
|
linux_statfs_buf.ffsid.val[0] = bsd_statfs->f_fsid.val[0];
|
|
linux_statfs_buf.ffsid.val[1] = bsd_statfs->f_fsid.val[1];
|
|
linux_statfs_buf.fnamelen = MAXNAMLEN;
|
|
return copyout((caddr_t)&linux_statfs_buf, (caddr_t)args->buf,
|
|
sizeof(struct linux_statfs_buf));
|
|
}
|
|
|
|
int
|
|
linux_fstatfs(struct proc *p, struct linux_fstatfs_args *args, int *retval)
|
|
{
|
|
struct file *fp;
|
|
struct mount *mp;
|
|
struct statfs *bsd_statfs;
|
|
struct linux_statfs_buf linux_statfs_buf;
|
|
int error;
|
|
|
|
#ifdef DEBUG
|
|
printf("Linux-emul(%d): fstatfs(%d, *)\n", p->p_pid, args->fd);
|
|
#endif
|
|
if (error = getvnode(p->p_fd, args->fd, &fp))
|
|
return error;
|
|
mp = ((struct vnode *)fp->f_data)->v_mount;
|
|
bsd_statfs = &mp->mnt_stat;
|
|
if (error = VFS_STATFS(mp, bsd_statfs, p))
|
|
return error;
|
|
bsd_statfs->f_flags = mp->mnt_flag & MNT_VISFLAGMASK;
|
|
linux_statfs_buf.ftype = bsd_statfs->f_type;
|
|
linux_statfs_buf.fbsize = bsd_statfs->f_bsize;
|
|
linux_statfs_buf.fblocks = bsd_statfs->f_blocks;
|
|
linux_statfs_buf.fbfree = bsd_statfs->f_bfree;
|
|
linux_statfs_buf.fbavail = bsd_statfs->f_bavail;
|
|
linux_statfs_buf.fffree = bsd_statfs->f_ffree;
|
|
linux_statfs_buf.ffiles = bsd_statfs->f_files;
|
|
linux_statfs_buf.ffsid.val[0] = bsd_statfs->f_fsid.val[0];
|
|
linux_statfs_buf.ffsid.val[1] = bsd_statfs->f_fsid.val[1];
|
|
linux_statfs_buf.fnamelen = MAXNAMLEN;
|
|
return copyout((caddr_t)&linux_statfs_buf, (caddr_t)args->buf,
|
|
sizeof(struct linux_statfs_buf));
|
|
}
|