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dd: allow count=0

This commit is contained in:
Eivind Uggedal 2016-03-15 20:16:05 +00:00 committed by sin
parent e5d88b0f30
commit c64b5b04c7
1 changed files with 2 additions and 1 deletions
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3
dd.c
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@ -126,7 +126,7 @@ prepare_copy(struct dd_config *ddc, int *ifd, int *ofd)
ddc->count *= ddc->bs; ddc->count *= ddc->bs;
/* If no count is given, its the filesize minus skip offset */ /* If no count is given, its the filesize minus skip offset */
if (ddc->count == 0) if (ddc->count == (uint64_t) -1)
ddc->count = ddc->fsize - ddc->skip; ddc->count = ddc->fsize - ddc->skip;
return 0; return 0;
@ -243,6 +243,7 @@ main(int argc, char *argv[])
config.bs = 1<<16; config.bs = 1<<16;
config.in = NULL; config.in = NULL;
config.out = NULL; config.out = NULL;
config.count = (uint64_t) -1;
/* emulate 'dd' argument parsing */ /* emulate 'dd' argument parsing */
for (i = 1; i < argc; ++i) { for (i = 1; i < argc; ++i) {