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Apply rev #2 of dd fix from Gennady Feldman.

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This commit is contained in:
Eric Andersen
2000-11-29 22:33:02 +00:00
parent 618e8ed4c4
commit ddea368dbe
4 changed files with 46 additions and 16 deletions
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28
coreutils/dd.c
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@ -49,14 +49,15 @@ extern int dd_main(int argc, char **argv)
int inCc = 0;
int outCc;
int trunc=TRUE;
long blockSize = 512;
int sync=FALSE;
long blockSize = 512,ibs;
uintmax_t skipBlocks = 0;
uintmax_t seekBlocks = 0;
uintmax_t count = (uintmax_t) - 1;
uintmax_t inTotal = 0;
uintmax_t outTotal = 0;
uintmax_t totalSize;
uintmax_t readSize;
unsigned char buf[BUFSIZ];
char *keyword = NULL;
@ -98,6 +99,8 @@ extern int dd_main(int argc, char **argv)
keyword = (strchr(*argv, '=') + 1);
if (strcmp(keyword, "notrunc") == 0)
trunc=FALSE;
if (strcmp(keyword, "sync") == 0)
sync=TRUE;
} else {
goto usage;
}
@ -137,13 +140,24 @@ extern int dd_main(int argc, char **argv)
lseek(inFd, (off_t) (skipBlocks * blockSize), SEEK_SET);
lseek(outFd, (off_t) (seekBlocks * blockSize), SEEK_SET);
totalSize=count*blockSize;
while ((readSize = totalSize - inTotal) > 0) {
if (readSize > BUFSIZ)
readSize=BUFSIZ;
inCc = fullRead(inFd, buf, readSize);
ibs=blockSize;
if (ibs > BUFSIZ)
ibs=BUFSIZ;
while (totalSize > outTotal) {
inCc = fullRead(inFd, buf, ibs);
inTotal += inCc;
if ((outCc = fullWrite(outFd, buf, inCc)) < 1)
if ( (sync==TRUE) && (inCc>0) )
while (inCc<ibs)
buf[inCc++]='\0';
if ((outCc = fullWrite(outFd, buf, inCc)) < 1){
if (outCc < 0 ){
perror("Error during write");
}
break;
}
outTotal += outCc;
}
if (trunc == TRUE) {