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Support noerror option

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This commit is contained in:
Eric Andersen
2002-04-27 01:31:43 +00:00
parent aba75460e4
commit ef38b39262
2 changed files with 18 additions and 4 deletions
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19
coreutils/dd.c
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@@ -46,7 +46,7 @@ static const struct suffix_mult dd_suffixes[] = {
int dd_main(int argc, char **argv)
{
int i, ifd, ofd, oflag, sync_flag = FALSE, trunc = TRUE;
int i, ifd, ofd, oflag, sync_flag = FALSE, trunc = TRUE, noerror = FALSE;
size_t in_full = 0, in_part = 0, out_full = 0, out_part = 0;
size_t bs = 512, count = -1;
ssize_t n;
@@ -75,6 +75,9 @@ int dd_main(int argc, char **argv)
} else if (strncmp("sync", buf, 4) == 0) {
sync_flag = TRUE;
buf += 4;
} else if (strncmp("noerror", buf, 7) == 0) {
noerror = TRUE;
buf += 7;
} else {
error_msg_and_die("invalid conversion `%s'", argv[i]+5);
}
@@ -131,9 +134,19 @@ int dd_main(int argc, char **argv)
}
while (in_full + in_part != count) {
if (noerror) {
/* Pre-zero the buffer when doing the noerror thing */
memset(buf, '\0', bs);
}
n = safe_read(ifd, buf, bs);
if (n < 0)
perror_msg_and_die("%s", infile);
if (n < 0) {
if (noerror) {
n = bs;
perror_msg("%s", infile);
} else {
perror_msg_and_die("%s", infile);
}
}
if (n == 0)
break;
if (n == bs)