[src/trunk]: src/sys/compat/netbsd32 allow mounting ext2fs and msdosfs

[macallan <macallan%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/e77c44b1b8b4
branches:  trunk
changeset: 777844:e77c44b1b8b4
user:      macallan <macallan%NetBSD.org@localhost>
date:      Tue Mar 06 07:37:05 2012 +0000

description:
allow mounting ext2fs and msdosfs
while there also enable lfs but that's untested

diffstat:

 sys/compat/netbsd32/netbsd32.h    |  15 +++++++++++++-
 sys/compat/netbsd32/netbsd32_fs.c |  42 ++++++++++++++++++++++++++++++++++++--
 2 files changed, 53 insertions(+), 4 deletions(-)

diffs (119 lines):

diff -r 98479825659b -r e77c44b1b8b4 sys/compat/netbsd32/netbsd32.h
--- a/sys/compat/netbsd32/netbsd32.h    Tue Mar 06 03:35:29 2012 +0000
+++ b/sys/compat/netbsd32/netbsd32.h    Tue Mar 06 07:37:05 2012 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: netbsd32.h,v 1.93 2012/02/19 21:06:39 rmind Exp $      */
+/*     $NetBSD: netbsd32.h,v 1.94 2012/03/06 07:37:05 macallan Exp $   */
 
 /*
  * Copyright (c) 1998, 2001, 2008 Matthew R. Green
@@ -927,6 +927,19 @@
        int32_t         deadthresh;     /* Retrans threshold */
        netbsd32_charp  hostname;       /* server's name */
 };
+struct netbsd32_msdosfs_args {
+       netbsd32_charp  fspec;          /* blocks special holding the fs to mount */
+       struct  netbsd32_export_args30 _pad1; /* compat with old userland tools */
+       uid_t   uid;            /* uid that owns msdosfs files */
+       gid_t   gid;            /* gid that owns msdosfs files */
+       mode_t  mask;           /* mask to be applied for msdosfs perms */
+       int     flags;          /* see below */
+
+       /* Following items added after versioning support */
+       int     version;        /* version of the struct */
+       mode_t  dirmask;        /* v2: mask to be applied for msdosfs perms */
+       int     gmtoff;         /* v3: offset from UTC in seconds */
+};
 
 #if 0
 int    netbsd32_kevent(struct lwp *, void *, register_t *);
diff -r 98479825659b -r e77c44b1b8b4 sys/compat/netbsd32/netbsd32_fs.c
--- a/sys/compat/netbsd32/netbsd32_fs.c Tue Mar 06 03:35:29 2012 +0000
+++ b/sys/compat/netbsd32/netbsd32_fs.c Tue Mar 06 07:37:05 2012 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: netbsd32_fs.c,v 1.62 2012/01/25 14:06:07 christos Exp $        */
+/*     $NetBSD: netbsd32_fs.c,v 1.63 2012/03/06 07:37:05 macallan Exp $        */
 
 /*
  * Copyright (c) 1998, 2001 Matthew R. Green
@@ -27,7 +27,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: netbsd32_fs.c,v 1.62 2012/01/25 14:06:07 christos Exp $");
+__KERNEL_RCSID(0, "$NetBSD: netbsd32_fs.c,v 1.63 2012/03/06 07:37:05 macallan Exp $");
 
 #include <sys/param.h>
 #include <sys/systm.h>
@@ -50,6 +50,8 @@
 #include <sys/vfs_syscalls.h>
 
 #include <fs/cd9660/cd9660_mount.h>
+#include <fs/msdosfs/bpb.h>
+#include <fs/msdosfs/msdosfsmount.h>
 #include <ufs/ufs/ufsmount.h>
 
 #define NFS_ARGS_ONLY
@@ -774,12 +776,14 @@
                struct netbsd32_mfs_args mfs_args;
                struct netbsd32_iso_args iso_args;
                struct netbsd32_nfs_args nfs_args;
+               struct netbsd32_msdosfs_args msdosfs_args;
        } fs_args32;
        union {
                struct ufs_args ufs_args;
                struct mfs_args mfs_args;
                struct iso_args iso_args;
                struct nfs_args nfs_args;
+               struct msdosfs_args msdosfs_args;
        } fs_args;
        const char *type = SCARG_P32(uap, type);
        const char *path = SCARG_P32(uap, path);
@@ -812,7 +816,9 @@
                data_seg = UIO_SYSSPACE;
                data = &fs_args.mfs_args;
                data_len = sizeof(fs_args.mfs_args);
-       } else if (strcmp(mtype, MOUNT_UFS) == 0) {
+       } else if ((strcmp(mtype, MOUNT_UFS) == 0) ||
+                  (strcmp(mtype, MOUNT_EXT2FS) == 0) ||
+                  (strcmp(mtype, MOUNT_LFS) == 0)) {
                if (data_len > sizeof(fs_args32.ufs_args))
                        return EINVAL;
                if ((flags & MNT_GETARGS) == 0) {
@@ -843,6 +849,36 @@
                data_seg = UIO_SYSSPACE;
                data = &fs_args.iso_args;
                data_len = sizeof(fs_args.iso_args);
+       } else if (strcmp(mtype, MOUNT_MSDOS) == 0) {
+               if (data_len != sizeof(fs_args32.msdosfs_args))
+                       return EINVAL;
+               if ((flags & MNT_GETARGS) == 0) {
+                       error = copyin(data, &fs_args32.msdosfs_args, 
+                           sizeof(fs_args32.msdosfs_args));
+                       if (error)
+                               return error;
+                       fs_args.msdosfs_args.fspec =
+                           NETBSD32PTR64(fs_args32.msdosfs_args.fspec);
+                       memset(&fs_args.msdosfs_args._pad1, 0,
+                           sizeof(fs_args.msdosfs_args._pad1));
+                       fs_args.msdosfs_args.uid =
+                           fs_args32.msdosfs_args.uid;
+                       fs_args.msdosfs_args.gid =
+                           fs_args32.msdosfs_args.gid;
+                       fs_args.msdosfs_args.mask =
+                           fs_args32.msdosfs_args.mask;
+                       fs_args.msdosfs_args.flags =
+                           fs_args32.msdosfs_args.flags;
+                       fs_args.msdosfs_args.version =
+                           fs_args32.msdosfs_args.version;
+                       fs_args.msdosfs_args.dirmask =
+                           fs_args32.msdosfs_args.dirmask;
+                       fs_args.msdosfs_args.gmtoff =
+                           fs_args32.msdosfs_args.gmtoff;
+               }
+               data_seg = UIO_SYSSPACE;
+               data = &fs_args.msdosfs_args;
+               data_len = sizeof(fs_args.msdosfs_args);
        } else if (strcmp(mtype, MOUNT_NFS) == 0) {
                if (data_len != sizeof(fs_args32.nfs_args))
                        return EINVAL;