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ls.c revision 1.7 
      1 /*-
      2  * Copyright (c) 1993
      3  *	The Regents of the University of California.  All rights reserved.
      4  *
      5  * Redistribution and use in source and binary forms, with or without
      6  * modification, are permitted provided that the following conditions
      7  * are met:
      8  * 1. Redistributions of source code must retain the above copyright
      9  *    notice, this list of conditions and the following disclaimer.
     10  * 2. Redistributions in binary form must reproduce the above copyright
     11  *    notice, this list of conditions and the following disclaimer in the
     12  *    documentation and/or other materials provided with the distribution.
     13  * 3. All advertising materials mentioning features or use of this software
     14  *    must display the following acknowledgement:
     15  *	This product includes software developed by the University of
     16  *	California, Berkeley and its contributors.
     17  * 4. Neither the name of the University nor the names of its contributors
     18  *    may be used to endorse or promote products derived from this software
     19  *    without specific prior written permission.
     20  *
     21  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     31  * SUCH DAMAGE.
     32  */
     33 
     34 #ifndef lint
     35 static char copyright[] =
     36 "@(#) Copyright (c) 1993\n\
     37 	The Regents of the University of California.  All rights reserved.\n";
     38 #endif /* not lint */
     39 
     40 #ifndef lint
     41 /*static char sccsid[] = "from: @(#)ls.c	8.1 (Berkeley) 6/11/93";*/
     42 static char rcsid[] = "$NetBSD: ls.c,v 1.7 1996/10/12 22:13:48 christos Exp $";
     43 #endif /* not lint */
     44 
     45 #include <sys/param.h>
     46 #include <sys/stat.h>
     47 #include <sys/dirent.h>
     48 #include <ufs/ufs/dir.h>
     49 #include <ufs/ufs/dinode.h>
     50 #include <sys/ttychars.h>
     51 #include <lib/libsa/stand.h>
     52 
     53 int main __P((void));
     54 static void ls __P((int));
     55 
     56 int
     57 main()
     58 {
     59 	struct stat st;
     60 	int fd;
     61 
     62 	for (;;) {
     63 		if ((fd = getfile("ls", 0)) == -1)
     64 			exit();
     65 
     66 		if (fstat(fd, &st) == -1) {
     67 			printf("ls: cannot stat\n");
     68 			continue;
     69 		}
     70 
     71 		if (!S_ISDIR(st.st_mode)) {
     72 			printf("ls: not a direntory\n");
     73 			continue;
     74 		}
     75 		if (st.st_size == 0) {
     76 			printf("ls: zero length direntory\n");
     77 			continue;
     78 		}
     79 		ls(fd);
     80 	}
     81 }
     82 
     83 typedef struct dirent	DP;
     84 static void
     85 ls(fd)
     86 	register int fd;
     87 {
     88 	register int size;
     89 	register char *dp;
     90 	char dirbuf[DIRBLKSIZ];
     91 
     92 	printf("\ninode\tname\n");
     93 	while ((size = read(fd, dirbuf, DIRBLKSIZ)) == DIRBLKSIZ)
     94 		for (dp = dirbuf; (dp < (dirbuf + size)) &&
     95 		    (dp + ((DP *)dp)->d_reclen) < (dirbuf + size);
     96 		    dp += ((DP *)dp)->d_reclen) {
     97 			if (((DP *)dp)->d_fileno == 0)
     98 				continue;
     99 			if (((DP *)dp)->d_namlen > MAXNAMLEN+1) {
    100 				printf("Corrupt file name length!  Run fsck soon!\n");
    101 				return;
    102 			}
    103 			printf("%d\t%s\n", ((DP *)dp)->d_fileno,
    104 			    ((DP *)dp)->d_name);
    105 		}
    106 }
    107