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tools: kwboot: Handle EINTR in kwboot_write()

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The write() syscall may be interrupted. Handle EINTR and retry it.

Signed-off-by: Pali Rohár <pali@kernel.org>
Signed-off-by: Marek Behún <marek.behun@nic.cz>
Reviewed-by: Stefan Roese <sr@denx.de>
This commit is contained in:
Pali Rohár 2022-01-25 18:13:10 +01:00 committed by Stefan Roese
parent 8d3b79c4a3
commit 6ba7d63e01
1 changed files with 5 additions and 3 deletions
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8
tools/kwboot.c
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@ -292,13 +292,15 @@ static int blk_rsp_timeo = KWBOOT_BLK_RSP_TIMEO;
static ssize_t
kwboot_write(int fd, const char *buf, size_t len)
{
size_t tot = 0;
ssize_t tot = 0;
while (tot < len) {
ssize_t wr = write(fd, buf + tot, len - tot);
if (wr < 0)
return -1;
if (wr < 0 && errno == EINTR)
continue;
else if (wr < 0)
return wr;
tot += wr;
}