freebsd-dev/sys/compat/linux/linux_stats.c
Bruce Evans 85422e62d3 Include <sys/malloc.h> instead of depending on namespace pollution 2
layers deep in <sys/proc.h> or <sys/vnode.h>.

Removed unused includes.  Sorted includes.
2002-09-05 08:13:20 +00:00

501 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 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 "opt_mac.h"
#include <sys/param.h>
#include <sys/conf.h>
#include <sys/dirent.h>
#include <sys/file.h>
#include <sys/filedesc.h>
#include <sys/proc.h>
#include <sys/mac.h>
#include <sys/malloc.h>
#include <sys/mount.h>
#include <sys/namei.h>
#include <sys/stat.h>
#include <sys/systm.h>
#include <sys/vnode.h>
#include <machine/../linux/linux.h>
#include <machine/../linux/linux_proto.h>
#include <compat/linux/linux_util.h>
static int
newstat_copyout(struct stat *buf, void *ubuf)
{
struct l_newstat tbuf;
struct cdevsw *cdevsw;
dev_t dev;
tbuf.st_dev = uminor(buf->st_dev) | (umajor(buf->st_dev) << 8);
tbuf.st_ino = buf->st_ino;
tbuf.st_mode = buf->st_mode;
tbuf.st_nlink = buf->st_nlink;
tbuf.st_uid = buf->st_uid;
tbuf.st_gid = buf->st_gid;
tbuf.st_rdev = buf->st_rdev;
tbuf.st_size = buf->st_size;
tbuf.st_atime = buf->st_atime;
tbuf.st_mtime = buf->st_mtime;
tbuf.st_ctime = buf->st_ctime;
tbuf.st_blksize = buf->st_blksize;
tbuf.st_blocks = buf->st_blocks;
/* Lie about disk drives which are character devices
* in FreeBSD but block devices under Linux.
*/
if (S_ISCHR(tbuf.st_mode) &&
(dev = udev2dev(buf->st_rdev, 0)) != NODEV) {
cdevsw = devsw(dev);
if (cdevsw != NULL && (cdevsw->d_flags & D_DISK)) {
tbuf.st_mode &= ~S_IFMT;
tbuf.st_mode |= S_IFBLK;
/* XXX this may not be quite right */
/* Map major number to 0 */
tbuf.st_dev = uminor(buf->st_dev) & 0xf;
tbuf.st_rdev = buf->st_rdev & 0xff;
}
}
return (copyout(&tbuf, ubuf, sizeof(tbuf)));
}
int
linux_newstat(struct thread *td, struct linux_newstat_args *args)
{
struct stat buf;
struct nameidata nd;
char *path;
int error;
LCONVPATHEXIST(td, args->path, &path);
#ifdef DEBUG
if (ldebug(newstat))
printf(ARGS(newstat, "%s, *"), path);
#endif
NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF | NOOBJ, UIO_SYSSPACE, path, td);
error = namei(&nd);
LFREEPATH(path);
if (error)
return (error);
NDFREE(&nd, NDF_ONLY_PNBUF);
error = vn_stat(nd.ni_vp, &buf, td->td_ucred, NOCRED, td);
vput(nd.ni_vp);
if (error)
return (error);
return (newstat_copyout(&buf, args->buf));
}
int
linux_newlstat(struct thread *td, struct linux_newlstat_args *args)
{
int error;
struct stat sb;
struct nameidata nd;
char *path;
LCONVPATHEXIST(td, args->path, &path);
#ifdef DEBUG
if (ldebug(newlstat))
printf(ARGS(newlstat, "%s, *"), path);
#endif
NDINIT(&nd, LOOKUP, NOFOLLOW | LOCKLEAF | NOOBJ, UIO_SYSSPACE, path,
td);
error = namei(&nd);
LFREEPATH(path);
if (error)
return (error);
NDFREE(&nd, NDF_ONLY_PNBUF);
error = vn_stat(nd.ni_vp, &sb, td->td_ucred, NOCRED, td);
vput(nd.ni_vp);
if (error)
return (error);
return (newstat_copyout(&sb, args->buf));
}
int
linux_newfstat(struct thread *td, struct linux_newfstat_args *args)
{
struct file *fp;
struct stat buf;
int error;
#ifdef DEBUG
if (ldebug(newfstat))
printf(ARGS(newfstat, "%d, *"), args->fd);
#endif
if ((error = fget(td, args->fd, &fp)) != 0)
return (error);
error = fo_stat(fp, &buf, td->td_ucred, td);
fdrop(fp, td);
if (!error)
error = newstat_copyout(&buf, args->buf);
return (error);
}
/* XXX - All fields of type l_int are defined as l_long on i386 */
struct l_statfs {
l_int f_type;
l_int f_bsize;
l_int f_blocks;
l_int f_bfree;
l_int f_bavail;
l_int f_files;
l_int f_ffree;
l_fsid_t f_fsid;
l_int f_namelen;
l_int f_spare[6];
};
#define LINUX_CODA_SUPER_MAGIC 0x73757245L
#define LINUX_EXT2_SUPER_MAGIC 0xEF53L
#define LINUX_HPFS_SUPER_MAGIC 0xf995e849L
#define LINUX_ISOFS_SUPER_MAGIC 0x9660L
#define LINUX_MSDOS_SUPER_MAGIC 0x4d44L
#define LINUX_NCP_SUPER_MAGIC 0x564cL
#define LINUX_NFS_SUPER_MAGIC 0x6969L
#define LINUX_NTFS_SUPER_MAGIC 0x5346544EL
#define LINUX_PROC_SUPER_MAGIC 0x9fa0L
#define LINUX_UFS_SUPER_MAGIC 0x00011954L /* XXX - UFS_MAGIC in Linux */
static long
bsd_to_linux_ftype(const char *fstypename)
{
int i;
static struct {const char *bsd_name; long linux_type;} b2l_tbl[] = {
{"ufs", LINUX_UFS_SUPER_MAGIC},
{"cd9660", LINUX_ISOFS_SUPER_MAGIC},
{"nfs", LINUX_NFS_SUPER_MAGIC},
{"ext2fs", LINUX_EXT2_SUPER_MAGIC},
{"procfs", LINUX_PROC_SUPER_MAGIC},
{"msdosfs", LINUX_MSDOS_SUPER_MAGIC},
{"ntfs", LINUX_NTFS_SUPER_MAGIC},
{"nwfs", LINUX_NCP_SUPER_MAGIC},
{"hpfs", LINUX_HPFS_SUPER_MAGIC},
{"coda", LINUX_CODA_SUPER_MAGIC},
{NULL, 0L}};
for (i = 0; b2l_tbl[i].bsd_name != NULL; i++)
if (strcmp(b2l_tbl[i].bsd_name, fstypename) == 0)
return (b2l_tbl[i].linux_type);
return (0L);
}
int
linux_statfs(struct thread *td, struct linux_statfs_args *args)
{
struct mount *mp;
struct nameidata *ndp;
struct statfs *bsd_statfs;
struct nameidata nd;
struct l_statfs linux_statfs;
char *path;
int error;
LCONVPATHEXIST(td, args->path, &path);
#ifdef DEBUG
if (ldebug(statfs))
printf(ARGS(statfs, "%s, *"), path);
#endif
ndp = &nd;
NDINIT(ndp, LOOKUP, FOLLOW, UIO_SYSSPACE, path, td);
error = namei(ndp);
LFREEPATH(path);
if (error)
return error;
NDFREE(ndp, NDF_ONLY_PNBUF);
mp = ndp->ni_vp->v_mount;
bsd_statfs = &mp->mnt_stat;
vrele(ndp->ni_vp);
#ifdef MAC
error = mac_check_mount_stat(td->td_proc->p_ucred, mp);
if (error)
return (error);
#endif
error = VFS_STATFS(mp, bsd_statfs, td);
if (error)
return error;
bsd_statfs->f_flags = mp->mnt_flag & MNT_VISFLAGMASK;
linux_statfs.f_type = bsd_to_linux_ftype(bsd_statfs->f_fstypename);
linux_statfs.f_bsize = bsd_statfs->f_bsize;
linux_statfs.f_blocks = bsd_statfs->f_blocks;
linux_statfs.f_bfree = bsd_statfs->f_bfree;
linux_statfs.f_bavail = bsd_statfs->f_bavail;
linux_statfs.f_ffree = bsd_statfs->f_ffree;
linux_statfs.f_files = bsd_statfs->f_files;
linux_statfs.f_fsid.val[0] = bsd_statfs->f_fsid.val[0];
linux_statfs.f_fsid.val[1] = bsd_statfs->f_fsid.val[1];
linux_statfs.f_namelen = MAXNAMLEN;
return copyout((caddr_t)&linux_statfs, (caddr_t)args->buf,
sizeof(linux_statfs));
}
int
linux_fstatfs(struct thread *td, struct linux_fstatfs_args *args)
{
struct file *fp;
struct mount *mp;
struct statfs *bsd_statfs;
struct l_statfs linux_statfs;
int error;
#ifdef DEBUG
if (ldebug(fstatfs))
printf(ARGS(fstatfs, "%d, *"), args->fd);
#endif
error = getvnode(td->td_proc->p_fd, args->fd, &fp);
if (error)
return error;
mp = ((struct vnode *)fp->f_data)->v_mount;
#ifdef MAC
error = mac_check_mount_stat(td->td_proc->p_ucred, mp);
if (error) {
fdrop(fp, td);
return (error);
}
#endif
bsd_statfs = &mp->mnt_stat;
error = VFS_STATFS(mp, bsd_statfs, td);
if (error) {
fdrop(fp, td);
return error;
}
bsd_statfs->f_flags = mp->mnt_flag & MNT_VISFLAGMASK;
linux_statfs.f_type = bsd_to_linux_ftype(bsd_statfs->f_fstypename);
linux_statfs.f_bsize = bsd_statfs->f_bsize;
linux_statfs.f_blocks = bsd_statfs->f_blocks;
linux_statfs.f_bfree = bsd_statfs->f_bfree;
linux_statfs.f_bavail = bsd_statfs->f_bavail;
linux_statfs.f_ffree = bsd_statfs->f_ffree;
linux_statfs.f_files = bsd_statfs->f_files;
linux_statfs.f_fsid.val[0] = bsd_statfs->f_fsid.val[0];
linux_statfs.f_fsid.val[1] = bsd_statfs->f_fsid.val[1];
linux_statfs.f_namelen = MAXNAMLEN;
error = copyout((caddr_t)&linux_statfs, (caddr_t)args->buf,
sizeof(linux_statfs));
fdrop(fp, td);
return error;
}
struct l_ustat
{
l_daddr_t f_tfree;
l_ino_t f_tinode;
char f_fname[6];
char f_fpack[6];
};
int
linux_ustat(struct thread *td, struct linux_ustat_args *args)
{
struct l_ustat lu;
dev_t dev;
struct vnode *vp;
struct statfs *stat;
int error;
#ifdef DEBUG
if (ldebug(ustat))
printf(ARGS(ustat, "%d, *"), args->dev);
#endif
/*
* lu.f_fname and lu.f_fpack are not used. They are always zeroed.
* lu.f_tinode and lu.f_tfree are set from the device's super block.
*/
bzero(&lu, sizeof(lu));
/*
* XXX - Don't return an error if we can't find a vnode for the
* device. Our dev_t is 32-bits whereas Linux only has a 16-bits
* dev_t. The dev_t that is used now may as well be a truncated
* dev_t returned from previous syscalls. Just return a bzeroed
* ustat in that case.
*/
dev = makedev(args->dev >> 8, args->dev & 0xFF);
if (vfinddev(dev, VCHR, &vp)) {
if (vp->v_mount == NULL)
return (EINVAL);
#ifdef MAC
error = mac_check_mount_stat(td->td_proc->p_ucred,
vp->v_mount);
if (error)
return (error);
#endif
stat = &(vp->v_mount->mnt_stat);
error = VFS_STATFS(vp->v_mount, stat, td);
if (error)
return (error);
lu.f_tfree = stat->f_bfree;
lu.f_tinode = stat->f_ffree;
}
return (copyout(&lu, args->ubuf, sizeof(lu)));
}
#if defined(__i386__)
static int
stat64_copyout(struct stat *buf, void *ubuf)
{
struct l_stat64 lbuf;
bzero(&lbuf, sizeof(lbuf));
lbuf.st_dev = uminor(buf->st_dev) | (umajor(buf->st_dev) << 8);
lbuf.st_ino = buf->st_ino;
lbuf.st_mode = buf->st_mode;
lbuf.st_nlink = buf->st_nlink;
lbuf.st_uid = buf->st_uid;
lbuf.st_gid = buf->st_gid;
lbuf.st_rdev = buf->st_rdev;
lbuf.st_size = buf->st_size;
lbuf.st_atime = buf->st_atime;
lbuf.st_mtime = buf->st_mtime;
lbuf.st_ctime = buf->st_ctime;
lbuf.st_blksize = buf->st_blksize;
lbuf.st_blocks = buf->st_blocks;
/*
* The __st_ino field makes all the difference. In the Linux kernel
* it is conditionally compiled based on STAT64_HAS_BROKEN_ST_INO,
* but without the assignment to __st_ino the runtime linker refuses
* to mmap(2) any shared libraries. I guess it's broken alright :-)
*/
lbuf.__st_ino = buf->st_ino;
return (copyout(&lbuf, ubuf, sizeof(lbuf)));
}
int
linux_stat64(struct thread *td, struct linux_stat64_args *args)
{
struct stat buf;
struct nameidata nd;
int error;
char *filename;
LCONVPATHEXIST(td, args->filename, &filename);
#ifdef DEBUG
if (ldebug(stat64))
printf(ARGS(stat64, "%s, *"), filename);
#endif
NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF | NOOBJ, UIO_SYSSPACE, filename,
td);
error = namei(&nd);
LFREEPATH(filename);
if (error)
return (error);
NDFREE(&nd, NDF_ONLY_PNBUF);
error = vn_stat(nd.ni_vp, &buf, td->td_ucred, NOCRED, td);
vput(nd.ni_vp);
if (error)
return (error);
return (stat64_copyout(&buf, args->statbuf));
}
int
linux_lstat64(struct thread *td, struct linux_lstat64_args *args)
{
int error;
struct stat sb;
struct nameidata nd;
char *filename;
LCONVPATHEXIST(td, args->filename, &filename);
#ifdef DEBUG
if (ldebug(lstat64))
printf(ARGS(lstat64, "%s, *"), args->filename);
#endif
NDINIT(&nd, LOOKUP, NOFOLLOW | LOCKLEAF | NOOBJ, UIO_SYSSPACE, filename,
td);
error = namei(&nd);
LFREEPATH(filename);
if (error)
return (error);
NDFREE(&nd, NDF_ONLY_PNBUF);
error = vn_stat(nd.ni_vp, &sb, td->td_ucred, NOCRED, td);
vput(nd.ni_vp);
if (error)
return (error);
return (stat64_copyout(&sb, args->statbuf));
}
int
linux_fstat64(struct thread *td, struct linux_fstat64_args *args)
{
struct filedesc *fdp;
struct file *fp;
struct stat buf;
int error;
#ifdef DEBUG
if (ldebug(fstat64))
printf(ARGS(fstat64, "%d, *"), args->fd);
#endif
fdp = td->td_proc->p_fd;
if ((unsigned)args->fd >= fdp->fd_nfiles ||
(fp = fdp->fd_ofiles[args->fd]) == NULL)
return (EBADF);
error = fo_stat(fp, &buf, td->td_ucred, td);
if (!error)
error = stat64_copyout(&buf, args->statbuf);
return (error);
}
#endif /* __i386__ */