1*0Sstevel@tonic-gate /* 2*0Sstevel@tonic-gate * CDDL HEADER START 3*0Sstevel@tonic-gate * 4*0Sstevel@tonic-gate * The contents of this file are subject to the terms of the 5*0Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only 6*0Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance 7*0Sstevel@tonic-gate * with the License. 8*0Sstevel@tonic-gate * 9*0Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10*0Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 11*0Sstevel@tonic-gate * See the License for the specific language governing permissions 12*0Sstevel@tonic-gate * and limitations under the License. 13*0Sstevel@tonic-gate * 14*0Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 15*0Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16*0Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 17*0Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 18*0Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 19*0Sstevel@tonic-gate * 20*0Sstevel@tonic-gate * CDDL HEADER END 21*0Sstevel@tonic-gate */ 22*0Sstevel@tonic-gate /* 23*0Sstevel@tonic-gate * Copyright 1994 Sun Microsystems, Inc. All rights reserved. 24*0Sstevel@tonic-gate * Use is subject to license terms. 25*0Sstevel@tonic-gate */ 26*0Sstevel@tonic-gate 27*0Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" 28*0Sstevel@tonic-gate 29*0Sstevel@tonic-gate #include <unistd.h> 30*0Sstevel@tonic-gate #include <sys/types.h> 31*0Sstevel@tonic-gate #include <sys/dirent.h> 32*0Sstevel@tonic-gate #include <sys/syscall.h> 33*0Sstevel@tonic-gate #include <sys/param.h> 34*0Sstevel@tonic-gate #include <sys/errno.h> 35*0Sstevel@tonic-gate 36*0Sstevel@tonic-gate #define ALIGN 4 37*0Sstevel@tonic-gate 38*0Sstevel@tonic-gate extern int errno; 39*0Sstevel@tonic-gate 40*0Sstevel@tonic-gate struct n_dirent{ 41*0Sstevel@tonic-gate unsigned long d_ino; 42*0Sstevel@tonic-gate long d_off; 43*0Sstevel@tonic-gate unsigned short d_reclen; 44*0Sstevel@tonic-gate char d_name[1]; 45*0Sstevel@tonic-gate }; 46*0Sstevel@tonic-gate 47*0Sstevel@tonic-gate 48*0Sstevel@tonic-gate int getdents(fd, buf, bytes) 49*0Sstevel@tonic-gate int fd; 50*0Sstevel@tonic-gate char *buf; 51*0Sstevel@tonic-gate int bytes; 52*0Sstevel@tonic-gate { 53*0Sstevel@tonic-gate return(bc_getdents(fd, buf, bytes)); 54*0Sstevel@tonic-gate } 55*0Sstevel@tonic-gate 56*0Sstevel@tonic-gate 57*0Sstevel@tonic-gate int bc_getdents(fd, buf, bytes) 58*0Sstevel@tonic-gate int fd; 59*0Sstevel@tonic-gate char *buf; 60*0Sstevel@tonic-gate int bytes; 61*0Sstevel@tonic-gate { 62*0Sstevel@tonic-gate int ret, nbytes; 63*0Sstevel@tonic-gate char *nbuf; 64*0Sstevel@tonic-gate struct dirent *dir; 65*0Sstevel@tonic-gate struct n_dirent *ndir; 66*0Sstevel@tonic-gate int count=0; 67*0Sstevel@tonic-gate off_t last_off; 68*0Sstevel@tonic-gate 69*0Sstevel@tonic-gate if (buf == (char *)0 || buf == (char *)-1) { 70*0Sstevel@tonic-gate errno = EFAULT; 71*0Sstevel@tonic-gate return(-1); 72*0Sstevel@tonic-gate } 73*0Sstevel@tonic-gate 74*0Sstevel@tonic-gate nbytes = bytes; /* buffer can only be as large as user expects */ 75*0Sstevel@tonic-gate 76*0Sstevel@tonic-gate if ((nbuf = (char *)malloc(nbytes)) == NULL) { 77*0Sstevel@tonic-gate return(-1); 78*0Sstevel@tonic-gate } 79*0Sstevel@tonic-gate 80*0Sstevel@tonic-gate if ((ret = _syscall(SYS_getdents, fd, nbuf, nbytes)) == -1) { 81*0Sstevel@tonic-gate free(nbuf); 82*0Sstevel@tonic-gate return(ret); 83*0Sstevel@tonic-gate } 84*0Sstevel@tonic-gate 85*0Sstevel@tonic-gate 86*0Sstevel@tonic-gate dir = (struct dirent *)buf; 87*0Sstevel@tonic-gate ndir = (struct n_dirent *)nbuf; /* source directory format */ 88*0Sstevel@tonic-gate 89*0Sstevel@tonic-gate while ((((int)(((char *)dir) + sizeof(struct n_dirent) + 90*0Sstevel@tonic-gate strlen(ndir->d_name) + ALIGN) & ~(ALIGN - 1)) < 91*0Sstevel@tonic-gate (int)(buf + bytes)) && 92*0Sstevel@tonic-gate ((char *)ndir + sizeof(struct n_dirent) <= (nbuf + ret))) { 93*0Sstevel@tonic-gate dir->d_off = ndir->d_off; 94*0Sstevel@tonic-gate dir->d_fileno = ndir->d_ino; /* NOT VALID */ 95*0Sstevel@tonic-gate dir->d_namlen = strlen(ndir->d_name); 96*0Sstevel@tonic-gate dir->d_reclen = (short)((sizeof(struct dirent) - MAXNAMLEN + 97*0Sstevel@tonic-gate dir->d_namlen + ALIGN) & -ALIGN); 98*0Sstevel@tonic-gate strncpy(dir->d_name, ndir->d_name, dir->d_namlen); 99*0Sstevel@tonic-gate dir->d_name[dir->d_namlen] = '\0'; 100*0Sstevel@tonic-gate count += dir->d_reclen; 101*0Sstevel@tonic-gate last_off = ndir->d_off; 102*0Sstevel@tonic-gate dir = (struct dirent *)((char *)dir + 103*0Sstevel@tonic-gate ((int)( dir->d_reclen))); 104*0Sstevel@tonic-gate ndir = (struct n_dirent *)((char *)ndir + 105*0Sstevel@tonic-gate ((int)(ndir->d_reclen))); 106*0Sstevel@tonic-gate } 107*0Sstevel@tonic-gate 108*0Sstevel@tonic-gate /* 109*0Sstevel@tonic-gate * Seek to the next entry in the directory. If all entries 110*0Sstevel@tonic-gate * in ndir were not copied to dir, the next getdents syscall 111*0Sstevel@tonic-gate * will start reading from there. 112*0Sstevel@tonic-gate */ 113*0Sstevel@tonic-gate (void)lseek(fd, last_off, SEEK_SET); 114*0Sstevel@tonic-gate free(nbuf); 115*0Sstevel@tonic-gate return(count); 116*0Sstevel@tonic-gate } 117