diff options
Diffstat (limited to 'dd.c')
| -rw-r--r-- | dd.c | 27 |
1 files changed, 14 insertions, 13 deletions
@@ -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); |