projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| b688fc87 WJ |
1 | /* |
| 2 | * Copyright (c) 1982, 1986, 1988 Regents of the University of California. | |
| 3 | * 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 | * @(#)ls.c 7.9 (Berkeley) 6/28/90 | |
| 34 | */ | |
| 35 | ||
| 36 | #include "sys/param.h" | |
| 37 | #include "ufs/dir.h" | |
| 38 | #include "saio.h" | |
| 39 | #include "sys/ttychars.h" | |
| 40 | ||
| 41 | main() | |
| 42 | { | |
| 43 | struct dinode *ip; | |
| 44 | int fd; | |
| 45 | ||
| 46 | for (;;) { | |
| 47 | if ((fd = getfile("ls", 0)) == -1) | |
| 48 | exit(); | |
| 49 | ip = &iob[fd - 3].i_ino; | |
| 50 | if ((ip->di_mode & IFMT) != IFDIR) { | |
| 51 | printf("ls: not a directory\n"); | |
| 52 | continue; | |
| 53 | } | |
| 54 | if (ip->di_size == 0) { | |
| 55 | printf("ls: zero length directory\n"); | |
| 56 | continue; | |
| 57 | } | |
| 58 | ls(fd); | |
| 59 | } | |
| 60 | } | |
| 61 | ||
| 62 | #define CTRL(x) (x&037) | |
| 63 | ||
| 64 | getfile(prompt, mode) | |
| 65 | char *prompt; | |
| 66 | int mode; | |
| 67 | { | |
| 68 | int fd; | |
| 69 | char buf[100]; | |
| 70 | ||
| 71 | do { | |
| 72 | printf("%s: ", prompt); | |
| 73 | gets(buf); | |
| 74 | if (buf[0] == CTRL('d') && buf[1] == 0) | |
| 75 | return (-1); | |
| 76 | } while ((fd = open(buf, mode)) <= 0); | |
| 77 | return(fd); | |
| 78 | } | |
| 79 | ||
| 80 | typedef struct direct DP; | |
| 81 | static | |
| 82 | ls(fd) | |
| 83 | register int fd; | |
| 84 | { | |
| 85 | register int size; | |
| 86 | register char *dp; | |
| 87 | char dirbuf[DIRBLKSIZ]; | |
| 88 | ||
| 89 | printf("\ninode\tname\n"); | |
| 90 | while ((size = read(fd, dirbuf, DIRBLKSIZ)) == DIRBLKSIZ) | |
| 91 | for(dp = dirbuf; (dp < (dirbuf + size)) && | |
| 92 | (dp + ((DP *)dp)->d_reclen) < (dirbuf + size); | |
| 93 | dp += ((DP *)dp)->d_reclen) { | |
| 94 | if (((DP *)dp)->d_ino == 0) | |
| 95 | continue; | |
| 96 | if (((DP *)dp)->d_namlen > MAXNAMLEN+1) { | |
| 97 | printf("Corrupt file name length! Run fsck soon!\n"); | |
| 98 | return; | |
| 99 | } | |
| 100 | printf("%d\t%s\n", ((DP *)dp)->d_ino, | |
| 101 | ((DP *)dp)->d_name); | |
| 102 | } | |
| 103 | } |