The directory entry format is defined in the file
.Aq sys/dirent.h
and further in the file
-.Aq dirent.h :
+.Aq dirent.h .
+When the macro
+.Dv _DARWIN_FEATURE_64_BIT_INODE
+is not defined (see
+.Xr stat 2
+for more information on this macro), the
+.Fa dirent
+structure is defined as:
.Bd -literal
/*** Excerpt from <sys/dirent.h> ***/
/*
- * The dirent structure defines the format of directory entries returned by
- * the getdirentries(2) system call.
+ * The dirent structure defines the format of directory entries.
*
* A directory entry has a struct dirent 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.
- * The dirent structure defines the format of directory entries returned by
- * the getdirentries(2) system call.
+ * The maximum length of a name in a directory is 255.
*/
-#ifndef _SYS_DIRENT_H
-#define _SYS_DIRENT_H
-
-struct dirent {
- u_int32_t d_fileno; /* file number of entry */
- u_int16_t d_reclen; /* length of this record */
- u_int8_t d_type; /* file type, see below */
- u_int8_t d_namlen; /* length of string in d_name */
-#ifdef _POSIX_SOURCE
- char d_name[255 + 1]; /* name must be no longer than this */
-#else
-#define MAXNAMLEN 255
- char d_name[MAXNAMLEN + 1]; /* name must be no longer than this */
-#endif
+struct dirent { /* when _DARWIN_FEATURE_64_BIT_INODE is NOT defined */
+ ino_t d_ino; /* file number of entry */
+ __uint16_t d_reclen; /* length of this record */
+ __uint8_t d_type; /* file type, see below */
+ __uint8_t d_namlen; /* length of string in d_name */
+ char d_name[255 + 1]; /* name must be no longer than this */
};
+.Ed
+.Pp
+However, when the macro
+.Dv _DARWIN_FEATURE_64_BIT_INODE
+is defined, the
+.Fa dirent
+structure is defined as:
+.Bd -literal
+/*
+ * The dirent structure defines the format of directory entries.
+ *
+ * A directory entry has a struct dirent 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 1023.
+ */
+struct dirent { /* when _DARWIN_FEATURE_64_BIT_INODE is defined */
+ ino_t d_fileno; /* file number of entry */
+ __uint16_t d_seekoff; /* seek offset (optional, used by servers) */
+ __uint16_t d_reclen; /* length of this record */
+ __uint16_t d_namlen; /* length of string in d_name */
+ __uint8_t d_type; /* file type, see below */
+ char d_name[1024]; /* name must be no longer than this */
+};
+.Ed
+.Pp
+In addition:
+.Bd -literal
/*
* File types
*/
#define DT_SOCK 12
#define DT_WHT 14
-#endif /* !_SYS_DIRENT_H_ */
-
.Ed
-----------------------------------------
.Bd -literal
/*** Excerpt from <dirent.h> ***/
-#ifndef _DIRENT_H
-#define _DIRENT_H
-
-#ifdef _POSIX_SOURCE
-typedef void * DIR;
-#else
-
-#define d_ino d_fileno /* backward compatibility */
+#define d_fileno d_ino /* backward compatibility */
/* definitions for library routines operating on directories. */
#define DIRBLKSIZ 1024
/* structure describing an open directory. */
typedef struct _dirdesc {
- int dd_fd; /* file descriptor associated with directory */
- long dd_loc; /* offset in current buffer */
- long dd_size; /* amount of data returned by getdirentries */
- char *dd_buf; /* data buffer */
- int dd_len; /* size of data buffer */
- long dd_seek; /* magic cookie returned by getdirentries */
- long dd_rewind; /* magic cookie for rewinding */
- int dd_flags; /* flags for readdir */
- pthread_mutex_t dd_lock; /* for thread locking */
- struct _telldir *dd_td; /* telldir position recording */
-} DIR;
-
-#define dirfd(dirp) ((dirp)->dd_fd)
-
-/* flags for opendir2 */
-#define DTF_HIDEW 0x0001 /* hide whiteout entries */
-#define DTF_NODUP 0x0002 /* don't return duplicate names */
-/* structure describing an open directory. */
-typedef struct _dirdesc {
- int dd_fd; /* file descriptor associated with directory */
- long dd_loc; /* offset in current buffer */
- long dd_size; /* amount of data returned by getdirentries */
- char *dd_buf; /* data buffer */
- int dd_len; /* size of data buffer */
- long dd_seek; /* magic cookie returned by getdirentries */
- long dd_rewind; /* magic cookie for rewinding */
- int dd_flags; /* flags for readdir */
- pthread_mutex_t dd_lock; /* for thread locking */
- struct _telldir *dd_td; /* telldir position recording */
+ int __dd_fd; /* file descriptor associated with directory */
+ long __dd_loc; /* offset in current buffer */
+ long __dd_size; /* amount of data returned by getdirentries */
+ char *__dd_buf; /* data buffer */
+ int __dd_len; /* size of data buffer */
+ long __dd_seek; /* magic cookie returned by getdirentries */
+ long __dd_rewind; /* magic cookie for rewinding */
+ int __dd_flags; /* flags for readdir */
+ pthread_mutex_t __dd_lock; /* for thread locking */
+ struct _telldir *__dd_td; /* telldir position recording */
} DIR;
#define dirfd(dirp) ((dirp)->dd_fd)
#define DTF_NODUP 0x0002 /* don't return duplicate names */
#define DTF_REWIND 0x0004 /* rewind after reading union stack */
#define __DTF_READALL 0x0008 /* everything has been read */
-
-#ifndef NULL
-#define NULL 0
-#endif
-
-#endif /* _POSIX_SOURCE */
-
-#endif /* !_DIRENT_H_ */
.Ed
.Sh SEE ALSO
.Xr fs 5 ,
projects / apple / xnu.git / blobdiff