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#include <sys/param.h> #include <sys/types.h> #include <sys/fs/ufs_fsdir.h>
Each DIRBLKSIZ-byte block contains some number of directory entry
structures, which are of variable length.
Each directory entry has
a struct direct
at the front of it, containing its inode number,
the length of the entry, and the length of the name contained in
the entry.
These are followed by the name padded to a 4 byte boundary
with null bytes.
All names are guaranteed null-terminated.
The maximum length of a name in a directory is MAXNAMLEN.
#define DIRBLKSIZ DEV_BSIZE #define MAXNAMLEN 256 struct direct { u_long d_ino; /* inode number of entry */ ushort_t d_reclen; /* length of this record */ ushort_t d_namlen; /* length of string in d_name */ char d_name[MAXNAMLEN + 1]; /* name must be no longer than this */ };