home *** CD-ROM | disk | FTP | other *** search
- /*
- <sys/dirent.h> -- file system independent directory entry (SVR3)
-
- last edit: 13-Oct-1987 D A Gwyn
-
- prerequisite: <sys/types.h>
- */
-
- struct dirent /* data from getdents()/readdir() */
- {
- long d_ino; /* inode number of entry */
- off_t d_off; /* offset of disk directory entry */
- unsigned short d_reclen; /* length of this record */
- char d_name[1]; /* name of file */ /* non-POSIX */
- };
-
- #ifdef BSD_SYSV /* (e.g., when compiling getdents.c) */
- extern struct dirent __dirent; /* (not actually used) */
- /* The following is portable, although rather silly. */
- #define DIRENTBASESIZ (__dirent.d_name - (char *)&__dirent.d_ino)
-
- #else
- /* The following nonportable ugliness could have been avoided by defining
- DIRENTSIZ and DIRENTBASESIZ to also have (struct dirent *) arguments.
- There shouldn't be any problem if you avoid using the DIRENTSIZ() macro. */
-
- #define DIRENTBASESIZ (((struct dirent *)0)->d_name \
- - (char *)&((struct dirent *)0)->d_ino)
- #endif
-
- #define DIRENTSIZ( namlen ) ((DIRENTBASESIZ + sizeof(long) + (namlen)) \
- / sizeof(long) * sizeof(long))
-
- /* DAG -- the following was moved from <dirent.h>, which was the wrong place */
- #define MAXNAMLEN 512 /* maximum filename length */
-
- #ifndef NAME_MAX
- #define NAME_MAX (MAXNAMLEN - 1) /* DAG -- added for POSIX */
- #endif
-