Path: utzoo!utgpu!water!watmath!clyde!att!osu-cis!tut.cis.ohio-state.edu!mailrus!ames!amdcad!sun!pitstop!sundc!seismo!uunet!mcvax!hp4nl!philmds!nlgvax!johan From: johan@nlgvax.UUCP (Johan Stevenson) Newsgroups: comp.os.minix Subject: Re: Useful new program and 1.3 checksums Message-ID: <147@nlgvax.UUCP> Date: 1 Oct 88 20:08:04 GMT References: <1443@ast.cs.vu.nl> <430@gonzo.UUCP> Reply-To: johan@nlgvax.UUCP (Johan Stevenson) Organization: Philips Research Geldrop Lines: 263 In article <430@gonzo.UUCP> daveb@gonzo.UUCP (Dave Brower) writes: >In article <1443@ast.cs.vu.nl> ast@cs.vu.nl (Andy Tanenbaum) writes: >>Johan Stevenson (the person who was the driving force behind Atari MINIX) >>just sent me a very useful little program that combines ls -l and sum. It >>is called crc, and the call: crc file1 ... prints for each argument both >>the file length and a checksum... > >It would be nice to print the other file vitals -- owner & perms. > >-dB I happen to have such a program as well. It is called inodes(1). The list of file names are read from stdin. All inode types are recognized (directory, special files, and on capable machines: symbolic links and sockets). See the shar file below. Typical uses is: $ find . -print | inodes The big question is: can we standardize on either crc(1) or inodes(1)? Preferences? PS. I even have a version, called tinodes(1), that produces the same output straight from a tar file. Johan W. Stevenson, Philips Research Laboratories, Project Centre Geldrop, Building XR, Room 15, Willem Alexanderlaan 7B, 5664 AN Geldrop, The Netherlands. phone: +31 40 892205 email: johan@pcg.philips.nl -------------------------------- : This is a shar archive. Extract with sh, not csh. : This archive ends with exit, so do not worry about trailing junk. echo 'Extracting inodes.c' sed 's/^X//' > inodes.c << '+ END-OF-FILE inodes.c' X/* X * Tabulate inode characteristics X * X * Author: Johan W. Stevenson X */ X#include X#include X#include X X#define NAMSIZ 256 X Xstruct linkbuf { X struct linkbuf *l_nxt; X ino_t l_ino; X dev_t l_dev; X char l_nam[NAMSIZ]; X}; X Xchar line[NAMSIZ]; Xstruct stat statbuf; Xstruct linkbuf *lhead; X Xmain() { X while (gets(line)) { X#ifdef S_IFLNK X if (lstat(line, &statbuf) < 0) { X#else X if (stat(line, &statbuf) < 0) { X#endif X fprintf(stderr, "cannot stat %s\n", line); X continue; X } X switch (statbuf.st_mode & S_IFMT) { X case S_IFDIR: dir(); break; X case S_IFCHR: dev('c'); break; X case S_IFBLK: dev('b'); break; X case S_IFREG: reg(); break; X#ifdef S_IFLNK X case S_IFLNK: lnk(); break; X#endif X#ifdef S_IFSOCK X case S_IFSOCK: sock(); break; X#endif X default: X fprintf(stderr, "%s: bad mode 0%o\n", line, statbuf.st_mode); X continue; X } X } X exit(0); X} X Xdir() { X register struct stat *p = &statbuf; X X printf( X "d %04o %2d %2d X X %s\n", X p->st_mode & 07777, X p->st_uid, X p->st_gid, X line X ); X} X Xdev(c) { X register struct stat *p = &statbuf; X X printf( X "%c %04o %2d %2d %5d %6d %s\n", X c, X p->st_mode & 07777, X p->st_uid, X p->st_gid, X major(p->st_rdev), X minor(p->st_rdev), X line X ); X} X Xreg() { X register struct stat *p = &statbuf; X X if (p->st_nlink > 1) { X register struct linkbuf *lp; X X for (lp = lhead; lp != NULL; lp = lp->l_nxt) X if (lp->l_ino == p->st_ino && lp->l_dev == p->st_dev) { X printf( X "i XXXX X X X X %s -> %s\n", X line, X lp->l_nam X ); X return; X } X lp = (struct linkbuf *) malloc(sizeof(*lp)); X if (lp == NULL) { X fprintf(stderr, "inodes: out of memory, link information lost\n"); X } else { X lp->l_nxt = lhead; X lhead = lp; X lp->l_ino = p->st_ino; X lp->l_dev = p->st_dev; X strcpy(lp->l_nam, line); X } X } X printf( X "f %04o %2d %2d %05u %6ld %s\n", X p->st_mode & 07777, X p->st_uid, X p->st_gid, X crc(), X p->st_size, X line X ); X} X X#ifdef S_IFLNK Xlnk() { X register struct stat *p = &statbuf; X char buf[NAMSIZ]; X register i; X X i = readlink(line, buf, sizeof(buf)); X if (i < 0) { X fprintf(stderr, "cannot readlink %s\n", line); X return; X } X buf[i] = 0; X printf( X "l %04o %2d %2d X X %s -> %s\n", X p->st_mode & 07777, X p->st_uid, X p->st_gid, X line, X buf X ); X} X#endif X X#ifdef S_IFSOCK Xsock() { X register struct stat *p = &statbuf; X X printf( X "s %04o %2d %2d X X %s\n", X p->st_mode & 07777, X p->st_uid, X p->st_gid, X line X ); X} X#endif X X/* crctab calculated by Mark G. Mendel, Network Systems Corporation */ Xstatic unsigned short crctab[256] = { X 0x0000, 0x1021, 0x2042, 0x3063, 0x4084, 0x50a5, 0x60c6, 0x70e7, X 0x8108, 0x9129, 0xa14a, 0xb16b, 0xc18c, 0xd1ad, 0xe1ce, 0xf1ef, X 0x1231, 0x0210, 0x3273, 0x2252, 0x52b5, 0x4294, 0x72f7, 0x62d6, X 0x9339, 0x8318, 0xb37b, 0xa35a, 0xd3bd, 0xc39c, 0xf3ff, 0xe3de, X 0x2462, 0x3443, 0x0420, 0x1401, 0x64e6, 0x74c7, 0x44a4, 0x5485, X 0xa56a, 0xb54b, 0x8528, 0x9509, 0xe5ee, 0xf5cf, 0xc5ac, 0xd58d, X 0x3653, 0x2672, 0x1611, 0x0630, 0x76d7, 0x66f6, 0x5695, 0x46b4, X 0xb75b, 0xa77a, 0x9719, 0x8738, 0xf7df, 0xe7fe, 0xd79d, 0xc7bc, X 0x48c4, 0x58e5, 0x6886, 0x78a7, 0x0840, 0x1861, 0x2802, 0x3823, X 0xc9cc, 0xd9ed, 0xe98e, 0xf9af, 0x8948, 0x9969, 0xa90a, 0xb92b, X 0x5af5, 0x4ad4, 0x7ab7, 0x6a96, 0x1a71, 0x0a50, 0x3a33, 0x2a12, X 0xdbfd, 0xcbdc, 0xfbbf, 0xeb9e, 0x9b79, 0x8b58, 0xbb3b, 0xab1a, X 0x6ca6, 0x7c87, 0x4ce4, 0x5cc5, 0x2c22, 0x3c03, 0x0c60, 0x1c41, X 0xedae, 0xfd8f, 0xcdec, 0xddcd, 0xad2a, 0xbd0b, 0x8d68, 0x9d49, X 0x7e97, 0x6eb6, 0x5ed5, 0x4ef4, 0x3e13, 0x2e32, 0x1e51, 0x0e70, X 0xff9f, 0xefbe, 0xdfdd, 0xcffc, 0xbf1b, 0xaf3a, 0x9f59, 0x8f78, X 0x9188, 0x81a9, 0xb1ca, 0xa1eb, 0xd10c, 0xc12d, 0xf14e, 0xe16f, X 0x1080, 0x00a1, 0x30c2, 0x20e3, 0x5004, 0x4025, 0x7046, 0x6067, X 0x83b9, 0x9398, 0xa3fb, 0xb3da, 0xc33d, 0xd31c, 0xe37f, 0xf35e, X 0x02b1, 0x1290, 0x22f3, 0x32d2, 0x4235, 0x5214, 0x6277, 0x7256, X 0xb5ea, 0xa5cb, 0x95a8, 0x8589, 0xf56e, 0xe54f, 0xd52c, 0xc50d, X 0x34e2, 0x24c3, 0x14a0, 0x0481, 0x7466, 0x6447, 0x5424, 0x4405, X 0xa7db, 0xb7fa, 0x8799, 0x97b8, 0xe75f, 0xf77e, 0xc71d, 0xd73c, X 0x26d3, 0x36f2, 0x0691, 0x16b0, 0x6657, 0x7676, 0x4615, 0x5634, X 0xd94c, 0xc96d, 0xf90e, 0xe92f, 0x99c8, 0x89e9, 0xb98a, 0xa9ab, X 0x5844, 0x4865, 0x7806, 0x6827, 0x18c0, 0x08e1, 0x3882, 0x28a3, X 0xcb7d, 0xdb5c, 0xeb3f, 0xfb1e, 0x8bf9, 0x9bd8, 0xabbb, 0xbb9a, X 0x4a75, 0x5a54, 0x6a37, 0x7a16, 0x0af1, 0x1ad0, 0x2ab3, 0x3a92, X 0xfd2e, 0xed0f, 0xdd6c, 0xcd4d, 0xbdaa, 0xad8b, 0x9de8, 0x8dc9, X 0x7c26, 0x6c07, 0x5c64, 0x4c45, 0x3ca2, 0x2c83, 0x1ce0, 0x0cc1, X 0xef1f, 0xff3e, 0xcf5d, 0xdf7c, 0xaf9b, 0xbfba, 0x8fd9, 0x9ff8, X 0x6e17, 0x7e36, 0x4e55, 0x5e74, 0x2e93, 0x3eb2, 0x0ed1, 0x1ef0 X}; X X/* X * updcrc macro derived from article Copyright (C) 1986 Stephen Satchell. X * NOTE: First argument must be in range 0 to 255. X * Second argument is referenced twice. X * X * Programmers may incorporate any or all code into their programs, X * giving proper credit within the source. Publication of the X * source routines is permitted so long as proper credit is given X * to Stephen Satchell, Satchell Evaluations and Chuck Forsberg, X * Omen Technology. X */ X X#define updcrc(cp, crc) ( crctab[((crc >> 8) & 255)] ^ (crc << 8) ^ cp) X Xcrc() X{ X register unsigned short crc; X register i, c; X register FILE *f; X X if ((f = fopen(line, "r")) == NULL) { X fprintf(stderr, "can't open %s\n", line); X return(0); X } X crc = 0; X while ((c = getc(f)) != EOF) { X crc = updcrc(c, crc); X } X if (ferror(f)) X fprintf(stderr, "read error on %s\n", line); X fclose(f); X return(crc); X} + END-OF-FILE inodes.c chmod 'u=r,g=r,o=r' 'inodes.c' echo 'SENT: -r--r--r-- 1 johan 5557 Oct 1 21:01 inodes.c' echo -n 'RCVD: ' /bin/ls -l inodes.c exit 0