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improve do_splice()

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This commit is contained in:
Kent Overstreet 2024-01-03 20:30:35 -05:00
parent 378ae738d5
commit 3054e5debb
1 changed files with 8 additions and 3 deletions
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11
cmd_fsck.c
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@ -35,7 +35,7 @@ static void setnonblocking(int fd)
static int do_splice(int rfd, int wfd)
{
char buf[4096];
char buf[4096], *b = buf;
int r = read(rfd, buf, sizeof(buf));
if (r < 0 && errno == EAGAIN)
@ -44,8 +44,13 @@ static int do_splice(int rfd, int wfd)
return r;
if (!r)
return 1;
if (write(wfd, buf, r) != r)
die("write error");
do {
ssize_t w = write(wfd, b, r);
if (w < 0)
die("%s: write error: %m", __func__);
r -= w;
b += w;
} while (r);
return 0;
}