1 static char sccsid[] = "@(#)readdir.c 4.3 8/8/82"; 2 3 #include <sys/types.h> 4 #include <ndir.h> 5 6 /* 7 * read an old stlye directory entry and present it as a new one 8 */ 9 #define ODIRSIZ 14 10 11 struct olddirect { 12 ino_t od_ino; 13 char od_name[ODIRSIZ]; 14 }; 15 16 /* 17 * get next entry in a directory. 18 */ 19 struct direct * 20 readdir(dirp) 21 register DIR *dirp; 22 { 23 register struct olddirect *dp; 24 static struct direct dir; 25 26 for (;;) { 27 if (dirp->dd_loc == 0) { 28 dirp->dd_size = read(dirp->dd_fd, dirp->dd_buf, 29 DIRBLKSIZ); 30 if (dirp->dd_size <= 0) 31 return NULL; 32 } 33 if (dirp->dd_loc >= dirp->dd_size) { 34 dirp->dd_loc = 0; 35 continue; 36 } 37 dp = (struct olddirect *)(dirp->dd_buf + dirp->dd_loc); 38 dirp->dd_loc += sizeof(struct olddirect); 39 if (dp->od_ino == 0) 40 continue; 41 dir.d_ino = dp->od_ino; 42 strncpy(dir.d_name, dp->od_name, ODIRSIZ); 43 dir.d_name[ODIRSIZ] = '\0'; /* insure null termination */ 44 dir.d_namlen = strlen(dir.d_name); 45 dir.d_reclen = DIRBLKSIZ; 46 return (&dir); 47 } 48 } 49