diff options
Diffstat (limited to 'sysdeps/freebsd')
| -rw-r--r-- | sysdeps/freebsd/procmap.c | 40 |
1 files changed, 39 insertions, 1 deletions
diff --git a/sysdeps/freebsd/procmap.c b/sysdeps/freebsd/procmap.c index 6d1c8548..124fc4ae 100644 --- a/sysdeps/freebsd/procmap.c +++ b/sysdeps/freebsd/procmap.c @@ -120,7 +120,45 @@ _glibtop_sysdeps_freebsd_dev_inode (glibtop *server, struct vnode *vnode, if (fs_type == IS_ZFS) { - /* NOP */ + /* FIXME: I have no idea about what is the actual layout of what we've read + but the inode number is definitely at offset 16, 8 bytes of amd64. + *inum = *(guint64*) ((unsigned char*)&inode + 16); + So this is really hugly, but I don't have anything better for now. + + Actually, this looks like a znode_t as described in kernel's zfs_znode.h. + I don't have that header file, so let's just mimic that. + */ + + struct my_zfsvfs { + /* vfs_t */ void *z_vfs; + /* zfsvfs_t */ void *z_parent; + /* objset_t */ void *z_os; + uint64_t z_root; + /* ... */ + }; + + typedef struct my_znode { + struct my_zfsvfs *z_zfsvfs; + /* vnode_t */ void *z_vnode; + uint64_t z_id; + /* ... */ + } my_znode_t; + + G_STATIC_ASSERT(sizeof(my_znode_t) <= sizeof(struct inode)); + + my_znode_t* znode = (my_znode_t*)&inode; + *inum = znode->z_id; + + struct my_zfsvfs zvfs; + + if (kvm_read(server->machine.kd, + (unsigned long)(znode->z_zfsvfs), + &zvfs, sizeof zvfs) != sizeof zvfs) { + glibtop_warn_io_r(server, "kvm_read (z_zfsvfs)"); + return; + } + + *dev = zvfs.z_root; } else if (fs_type == IS_UFS) { /* Set inum as soon as possible, so that if the next kvm_reads fail |