diff options
Diffstat (limited to 'sys/compat/linux/linux_stats.c')
| -rw-r--r-- | sys/compat/linux/linux_stats.c | 297 |
1 files changed, 297 insertions, 0 deletions
diff --git a/sys/compat/linux/linux_stats.c b/sys/compat/linux/linux_stats.c new file mode 100644 index 0000000..8d562e0 --- /dev/null +++ b/sys/compat/linux/linux_stats.c @@ -0,0 +1,297 @@ +/*- + * 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)); +} |
