diff options
Diffstat (limited to 'sys/ufs/ffs/fs.h')
| -rw-r--r-- | sys/ufs/ffs/fs.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/sys/ufs/ffs/fs.h b/sys/ufs/ffs/fs.h index 620fee9..35ee270 100644 --- a/sys/ufs/ffs/fs.h +++ b/sys/ufs/ffs/fs.h @@ -234,6 +234,20 @@ struct fsck_cmd { }; /* + * A recovery structure placed at the end of the boot block area by newfs + * that can be used by fsck to search for alternate superblocks. + */ +#define RESID (4096 - 20) /* disk sector size minus recovery area size */ +struct fsrecovery { + char block[RESID]; /* unused part of sector */ + int32_t fsr_magic; /* magic number */ + int32_t fsr_fsbtodb; /* fsbtodb and dbtofsb shift constant */ + int32_t fsr_sblkno; /* offset of super-block in filesys */ + int32_t fsr_fpg; /* blocks per group * fs_frag */ + u_int32_t fsr_ncg; /* number of cylinder groups */ +}; + +/* * Per cylinder group information; summarized in blocks allocated * from first cylinder group data blocks. These blocks have to be * read in from fs_csaddr (size fs_cssize) in addition to the |
