1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 #pragma ident "%Z%%M% %I% %E% SMI" 23 24 /* 25 * Filesystem-independent directory information. 26 * Directory entry structures are of variable length. 27 * Each directory entry is a struct direct containing its file number, the 28 * offset of the next entry (a cookie interpretable only the filesystem 29 * type that generated it), the length of the entry, and the length of the 30 * name contained in the entry. These are followed by the name. The 31 * entire entry is padded with null bytes to a 4 byte boundary. All names 32 * are guaranteed null terminated. The maximum length of a name in a 33 * directory is MAXNAMLEN, plus a null byte. 34 * Note: this file is present only for backwards compatibility. It is superseded 35 * by the files /usr/include/dirent.h and /usr/include/sys/dirent.h. It will 36 * disappear in a future major release. 37 */ 38 39 #ifndef _sys_dir_h 40 #define _sys_dir_h 41 42 #define MAXNAMLEN 255 43 44 struct direct { 45 off_t d_off; /* offset of next disk directory entry */ 46 u_long d_fileno; /* file number of entry */ 47 u_short d_reclen; /* length of this record */ 48 u_short d_namlen; /* length of string in d_name */ 49 char d_name[MAXNAMLEN + 1]; /* name (up to MAXNAMLEN + 1) */ 50 }; 51 52 /* 53 * The macro DIRSIZ(dp) gives the minimum amount of space required to represent 54 * a directory entry. For any directory entry dp->d_reclen >= DIRSIZ(dp). 55 * Specific filesystem typesm may use this macro to construct the value 56 * for d_reclen. 57 */ 58 #undef DIRSIZ 59 #define DIRSIZ(dp) \ 60 (((sizeof (struct direct) - (MAXNAMLEN+1) + ((dp)->d_namlen+1)) + 3) & ~3) 61 62 #ifndef KERNEL 63 #define d_ino d_fileno /* compatability */ 64 65 66 /* 67 * Definitions for library routines operating on directories. 68 */ 69 70 typedef struct _dirdesc { 71 int dd_fd; /* file descriptor */ 72 long dd_loc; /* buf offset of entry from last readddir() */ 73 long dd_size; /* amount of valid data in buffer */ 74 long dd_bsize; /* amount of entries read at a time */ 75 long dd_off; /* Current offset in dir (for telldir) */ 76 char *dd_buf; /* directory data buffer */ 77 } DIR; 78 79 #ifndef NULL 80 #define NULL 0 81 #endif 82 extern DIR *opendir(); 83 extern struct direct *readdir(); 84 extern long telldir(); 85 extern void seekdir(); 86 #define rewinddir(dirp) seekdir((dirp), (long)0) 87 extern int closedir(); 88 #endif 89 90 #endif /*!_sys_dir_h*/ 91