diff options
Diffstat (limited to 'usr/src/lib/libbc/libc/gen/common/readdir.c')
-rw-r--r-- | usr/src/lib/libbc/libc/gen/common/readdir.c | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/usr/src/lib/libbc/libc/gen/common/readdir.c b/usr/src/lib/libbc/libc/gen/common/readdir.c new file mode 100644 index 0000000000..c4f2c65652 --- /dev/null +++ b/usr/src/lib/libbc/libc/gen/common/readdir.c @@ -0,0 +1,67 @@ +/* + * CDDL HEADER START + * + * The contents of this file are subject to the terms of the + * Common Development and Distribution License, Version 1.0 only + * (the "License"). You may not use this file except in compliance + * with the License. + * + * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE + * or http://www.opensolaris.org/os/licensing. + * See the License for the specific language governing permissions + * and limitations under the License. + * + * When distributing Covered Code, include this CDDL HEADER in each + * file and include the License file at usr/src/OPENSOLARIS.LICENSE. + * If applicable, add the following below this CDDL HEADER, with the + * fields enclosed by brackets "[]" replaced with your own identifying + * information: Portions Copyright [yyyy] [name of copyright owner] + * + * CDDL HEADER END + */ +/* + * Copyright 1987 Sun Microsystems, Inc. All rights reserved. + * Use is subject to license terms. + */ + +#pragma ident "%Z%%M% %I% %E% SMI" + +#include <sys/param.h> +#include <dirent.h> + +/* + * get next entry in a directory. + */ +struct dirent * +readdir(dirp) + register DIR *dirp; +{ + register struct dirent *dp; + int saveloc = 0; + +next: + if (dirp->dd_size != 0) { + dp = (struct dirent *)&dirp->dd_buf[dirp->dd_loc]; + saveloc = dirp->dd_loc; /* save for possible EOF */ + dirp->dd_loc += dp->d_reclen; + } + if (dirp->dd_loc >= dirp->dd_size) + dirp->dd_loc = dirp->dd_size = 0; + + if (dirp->dd_size == 0 /* refill buffer */ + && (dirp->dd_size = getdents(dirp->dd_fd, dirp->dd_buf, dirp->dd_bsize) + ) <= 0 + ) { + if (dirp->dd_size == 0) /* This means EOF */ + dirp->dd_loc = saveloc; /* EOF so save for telldir */ + return (NULL); /* error or EOF */ + } + + dp = (struct dirent *)&dirp->dd_buf[dirp->dd_loc]; + if (dp->d_reclen <= 0) + return (NULL); + if (dp->d_fileno == 0) + goto next; + dirp->dd_off = dp->d_off; + return(dp); +} |