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262 lines
8.3 KiB
C
262 lines
8.3 KiB
C
/*
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* volmcopy.c
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*
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* This program scans a metatape file and prints file count and sizes.
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* It is only for volmgr save images. Save images have the following format:
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* One or more 6144 byte records containing a list of files saved 16 char file
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* name followed my 16 char directory name followed by 16 char volume name.
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* A 1536 byte file definition entry will be followed by 1 to 8 768 byte
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* file data records followed by an EOF for each file. If the file size is
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* greater than 6144 bytes, 1 or more 6144 byte records are output followed
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* by last record modulo 768 bytes. Two EOFs in a row define the EOT.
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* input - stdin or specified filename
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* output - stdout
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*/
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#include <stdio.h>
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#include <sys/file.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <string.h>
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#include <ctype.h>
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#include <errno.h>
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int filen = 1;
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int EOFcnt = 0;
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int count=0, lcount=0;
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int size=0, tsize=0;
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int size_512K = 512 * 1024;
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int ln;
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#ifdef USE_READ
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FILE *infp;
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#else
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int inp, outp;
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#endif
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#define PRINTABLE(x) ((x < 32) || (x > 126)) ? '.' : x
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/* get a line of input. */
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int getloi(char *s, int lim)
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{
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int c, i;
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int n1, n2, hc, tc, n;
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errno = 0;
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/* read the byte count in 32 bit word as header */
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n1 = read(inp, (char *)(&hc), (size_t)sizeof(hc));
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if (n1 <= 0)
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hc = -1; /* at EOM on disk file */
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/* check for EOF & EOM on tape data */
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if (hc & 0xffff0000) /* check for garbage, assume EOM */
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hc = -1; /* at EOM on disk file */
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/* check for EOF & EOM on tape data */
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if (hc == 0)
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{
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/* we are at tape EOF */
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if (++EOFcnt < 2) /* if 1st EOF, print file info */
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{
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filen++; /* set next file number */
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}
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count = 0; /* file record count back to zero */
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lcount = 0; /* last record count back to zero */
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tsize += size; /* add to total tape size */
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size = 0; /* file size back to zero */
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ln = -1; /* set ln to -1 showing we are at EOF */
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/* we have EOF */
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return 0; /* return EOF on tape data */
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}
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if (hc == -1)
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return -1; /* at EOM on disk file */
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/* read the data */
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n = read(inp, s, (size_t)hc);
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/* read the byte count in 32 bit word as trailer */
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n2 = read(inp, (char *)(&tc), (size_t)sizeof(tc));
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count++; /* bump record count */
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size += n; /* update bytes read */
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EOFcnt = 0; /* not an EOF */
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if (n != ln)
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{
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ln = n;
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lcount = count;
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}
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/* return bytes in buffer */
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return n;
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}
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int main (int argc, char *argv[])
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{
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char *buf;
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size_t size_512K = 512 * 1024;
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size_t buf_size = 512 * 1024;
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char *cp, *np;
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int ll;
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int lfilen = filen;
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char path[64], command[128];
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if (argc != 2)
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{
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fprintf(stderr, "usage: %s infile\n", argv[0]);
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exit(1);
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} /* end of if */
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if ((inp = open(argv[1], O_RDONLY, 0666)) < 0)
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{
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fprintf(stderr,"%s: fopen: unable to open input file %s\n", argv[0], argv[1]);
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return (1);
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}
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outp = -1;
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/* get a 512k buffer */
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if ((buf = malloc(buf_size)) == NULL)
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{
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fprintf(stderr, "Can't allocate memory for tscan\n");
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return (4);
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}
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/* init counts */
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ln = -2; /* look for 2 eof */
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count = 0;
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size = 0;
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tsize = 0;
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lcount = 0;
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filen = 1;
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lfilen = filen;
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printf("\nfile %d:\n", filen);
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/* get lines until eof */
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while ((ll=getloi(buf, buf_size)) != EOF)
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{
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if (ll == 0)
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{
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/* eof found, process new file */
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printf("\nfile %d:\n", filen);
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}
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else
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{
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int cc = 0;
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unsigned int curchar;
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/* dump first 2 words */
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int w1, w2, i, j;
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w1 = (buf[0] & 0xff) << 24 | buf[1] << 16 | buf[2] << 8 | (buf[3] & 0xff);
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w2 = (buf[4] & 0xff) << 24 | buf[5] << 16 | buf[6] << 8 | (buf[7] & 0xff);
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// printf("w1 = %x, w2 = %d count = %d\n", w1, w2, count);
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if (count == 1 && w1 == 1)
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{
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char file[20], dir[20], vol[20];
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int off = 8;
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int l = 0;
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/* we have directory entries */
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for (j=0; j<w2; j++)
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{
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int k = l++ * 48;
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if (k > (6144-48-off))
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{
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ll=getloi(buf, buf_size);
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off = 0;
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l = 0;
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k = 0;
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printf("reread: got ll= %d\n", ll);
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}
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for (i=0; i<16; i++)
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{
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file[i] = tolower(buf[k+off+i]);
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if (file[i] == ' ')
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file[i] = '\0';
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}
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file[16] = '\0';
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for (i=0; i<16; i++)
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{
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dir[i] = tolower(buf[k+off+16+i]);
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if (dir[i] == ' ')
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dir[i] = '\0';
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}
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dir[16] = '\0';
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for (i=0; i<16; i++)
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{
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vol[i] = tolower(buf[k+off+32+i]);
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if (vol[i] == ' ')
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vol[i] = '\0';
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}
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vol[16] = '\0';
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sprintf(path, "./%s/%s", vol, dir);
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/* create the directory/file */
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sprintf(command, "mkdir -p %s", path);
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system(command);
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sprintf(path, "./%s/%s/%s", vol, dir, file);
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sprintf(command, "touch %s", path);
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system(command);
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}
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} else
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if (count == 1 && w1 == 2 && w2 == 0)
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{
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char file[20], dir[20], vol[20];
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if (outp >= 0)
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close(outp);
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outp = -1;
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/* process file definition */
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/* we have a file definition entry */
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for (i=0; i<16; i++)
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{
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file[i] = tolower(buf[8+i]);
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if (file[i] == ' ')
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file[i] = '\0';
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}
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file[16] = '\0';
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for (i=0; i<16; i++)
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{
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dir[i] = tolower(buf[24+i]);
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if (dir[i] == ' ')
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dir[i] = '\0';
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}
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dir[16] = '\0';
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for (i=0; i<16; i++)
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{
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vol[i] = tolower(buf[40+i]);
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if (vol[i] == ' ')
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vol[i] = '\0';
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}
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vol[16] = '\0';
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sprintf(path, "./%s/%s/%s", vol, dir, file);
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printf("path = %s\n", path);
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/* open output file, create it if necessary */
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if ((outp = open(path, O_WRONLY|O_CREAT|O_TRUNC, 0666)) < 0)
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{
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(void)fprintf(stderr, "Can't open %s\n", path);
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close(inp);
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free(buf);
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return (3);
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}
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/* process file data for file */
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if (ll > 1536)
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{
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int no = write(outp, buf+1536, ll-1536);
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if (no != ll)
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fprintf(stderr, "write (%d) != read (%d) on file %s\n", no, ll, path);
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}
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} else
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if (count > 1)
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{
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/* process file data for file */
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int no = write(outp, buf, ll);
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if (no != ll)
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fprintf(stderr, "write (%d) != read (%d) on file %s\n", no, ll, path);
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}
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/* process the returned buffer */
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// while (cc < ll)
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// {
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// curchar = (unsigned int)buf[cc++] & 0xff;
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// } /* end of while */
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}
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}
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close(inp);
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free(buf);
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if (outp >= 0)
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close(outp);
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exit(0);
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}
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