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My previous attempt to make dd use fullRead, fullWrite was very broken,

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this should actually work.
This commit is contained in:
Glenn L McGrath
2000-09-10 01:54:27 +00:00
parent bd7c67136a
commit 0ae8e5a645
2 changed files with 28 additions and 26 deletions
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27
dd.c
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@@ -52,9 +52,11 @@ extern int dd_main(int argc, char **argv)
uintmax_t skipBlocks = 0;
uintmax_t seekBlocks = 0;
uintmax_t count = (uintmax_t) - 1;
uintmax_t intotal;
uintmax_t outTotal;
unsigned char *buf;
uintmax_t inTotal = 0;
uintmax_t outTotal = 0;
uintmax_t totalSize;
uintmax_t readSize;
unsigned char buf[BUFSIZ];
argc--;
argv++;
@@ -98,11 +100,6 @@ extern int dd_main(int argc, char **argv)
argv++;
}
buf = xmalloc(blockSize);
intotal = 0;
outTotal = 0;
if (inFile == NULL)
inFd = fileno(stdin);
else
@@ -134,9 +131,13 @@ extern int dd_main(int argc, char **argv)
lseek(inFd, skipBlocks * blockSize, SEEK_SET);
lseek(outFd, seekBlocks * blockSize, SEEK_SET);
while ((inCc = read(inFd, buf, sizeof(buf))) > 0) {
intotal +=inCc;
totalSize=count*blockSize;
printf("totalsize is %d\n",(int) totalSize);
while ((readSize = totalSize - inTotal) > 0) {
if (readSize > BUFSIZ)
readSize=BUFSIZ;
inCc = read(inFd, buf, readSize);
inTotal += inCc;
if ((outCc = fullWrite(outFd, buf, inCc)) < 0)
break;
outTotal += outCc;
@@ -150,8 +151,8 @@ extern int dd_main(int argc, char **argv)
free(buf);
#endif
printf("%ld+%d records in\n", (long) (intotal / blockSize),
(intotal % blockSize) != 0);
printf("%ld+%d records in\n", (long) (inTotal / blockSize),
(inTotal % blockSize) != 0);
printf("%ld+%d records out\n", (long) (outTotal / blockSize),
(outTotal % blockSize) != 0);
exit(TRUE);