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-rw-r--r--sys/compat/linux/linux_stats.c161
1 files changed, 94 insertions, 67 deletions
diff --git a/sys/compat/linux/linux_stats.c b/sys/compat/linux/linux_stats.c
index 327343b..8d562e0 100644
--- a/sys/compat/linux/linux_stats.c
+++ b/sys/compat/linux/linux_stats.c
@@ -25,7 +25,7 @@
* (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 1.3 1995/11/22 07:43:51 bde Exp $
+ * $Id: linux_stats.c,v 1.4 1996/01/30 12:23:17 peter Exp $
*/
#include <sys/param.h>
@@ -42,7 +42,8 @@
#include <sys/pipe.h>
#include <i386/linux/linux.h>
-#include <i386/linux/sysproto.h>
+#include <i386/linux/linux_proto.h>
+#include <i386/linux/linux_util.h>
struct linux_newstat {
unsigned short stat_dev;
@@ -67,10 +68,6 @@ struct linux_newstat {
unsigned long __unused5;
};
-struct linux_newstat_args {
- char *path;
- struct linux_newstat *buf;
-};
static int
newstat_copyout(struct stat *buf, void *ubuf)
@@ -97,9 +94,12 @@ int
linux_newstat(struct proc *p, struct linux_newstat_args *args, int *retval)
{
struct stat buf;
- struct linux_newstat tbuf;
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);
@@ -115,44 +115,78 @@ linux_newstat(struct proc *p, struct linux_newstat_args *args, int *retval)
return error;
}
+/*
+ * Get file status; this version does not follow links.
+ */
int
-linux_newlstat(struct proc *p, struct linux_newstat_args *args, int *retval)
+linux_newlstat(p, uap, retval)
+ struct proc *p;
+ struct linux_newlstat_args *uap;
+ int *retval;
{
- struct stat buf;
- struct linux_newstat tbuf;
- struct nameidata nd;
- int error;
+ 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, args->path);
+ printf("Linux-emul(%d): newlstat(%s, *)\n", p->p_pid, uap->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;
+ 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);
}
-struct linux_newfstat_args {
- int fd;
- struct linux_newstat *buf;
-};
-
int
linux_newfstat(struct proc *p, struct linux_newfstat_args *args, int *retval)
{
- struct linux_newstat tbuf;
struct filedesc *fdp = p->p_fd;
struct file *fp;
struct stat buf;
int error;
#ifdef DEBUG
- printf("Linux-emul(%d): newlstat(%d, *)\n", p->p_pid, args->fd);
+ 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)
@@ -175,7 +209,7 @@ linux_newfstat(struct proc *p, struct linux_newfstat_args *args, int *retval)
return error;
}
-struct linux_statfs {
+struct linux_statfs_buf {
long ftype;
long fbsize;
long fblocks;
@@ -188,12 +222,6 @@ struct linux_statfs {
long fspare[6];
};
-
-struct linux_statfs_args {
- char *path;
- struct statfs *buf;
-};
-
int
linux_statfs(struct proc *p, struct linux_statfs_args *args, int *retval)
{
@@ -201,8 +229,12 @@ linux_statfs(struct proc *p, struct linux_statfs_args *args, int *retval)
struct nameidata *ndp;
struct statfs *bsd_statfs;
struct nameidata nd;
- struct linux_statfs linux_statfs;
+ 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);
@@ -217,32 +249,27 @@ linux_statfs(struct proc *p, struct linux_statfs_args *args, int *retval)
if (error = VFS_STATFS(mp, bsd_statfs, p))
return error;
bsd_statfs->f_flags = mp->mnt_flag & MNT_VISFLAGMASK;
- linux_statfs.ftype = bsd_statfs->f_type;
- linux_statfs.fbsize = bsd_statfs->f_bsize;
- linux_statfs.fblocks = bsd_statfs->f_blocks;
- linux_statfs.fbfree = bsd_statfs->f_bfree;
- linux_statfs.fbavail = bsd_statfs->f_bavail;
- linux_statfs.fffree = bsd_statfs->f_ffree;
- linux_statfs.ffiles = bsd_statfs->f_files;
- linux_statfs.ffsid.val[0] = bsd_statfs->f_fsid.val[0];
- linux_statfs.ffsid.val[1] = bsd_statfs->f_fsid.val[1];
- linux_statfs.fnamelen = MAXNAMLEN;
- return copyout((caddr_t)&linux_statfs, (caddr_t)args->buf,
- sizeof(struct linux_statfs));
+ 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));
}
-struct linux_fstatfs_args {
- int fd;
- struct 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 linux_statfs;
+ struct linux_statfs_buf linux_statfs_buf;
int error;
#ifdef DEBUG
@@ -255,16 +282,16 @@ linux_fstatfs(struct proc *p, struct linux_fstatfs_args *args, int *retval)
if (error = VFS_STATFS(mp, bsd_statfs, p))
return error;
bsd_statfs->f_flags = mp->mnt_flag & MNT_VISFLAGMASK;
- linux_statfs.ftype = bsd_statfs->f_type;
- linux_statfs.fbsize = bsd_statfs->f_bsize;
- linux_statfs.fblocks = bsd_statfs->f_blocks;
- linux_statfs.fbfree = bsd_statfs->f_bfree;
- linux_statfs.fbavail = bsd_statfs->f_bavail;
- linux_statfs.fffree = bsd_statfs->f_ffree;
- linux_statfs.ffiles = bsd_statfs->f_files;
- linux_statfs.ffsid.val[0] = bsd_statfs->f_fsid.val[0];
- linux_statfs.ffsid.val[1] = bsd_statfs->f_fsid.val[1];
- linux_statfs.fnamelen = MAXNAMLEN;
- return copyout((caddr_t)&linux_statfs, (caddr_t)args->buf,
- sizeof(struct linux_statfs));
+ 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));
}
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