On 1/25/22 18:13, Marek Behún wrote:
From: Pali Rohár <[email protected]>
The write() syscall may be interrupted. Handle EINTR and retry it.
Signed-off-by: Pali Rohár <[email protected]>
Signed-off-by: Marek Behún <[email protected]>
Reviewed-by: Stefan Roese <[email protected]>
Thanks,
Stefan
---
tools/kwboot.c | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)
diff --git a/tools/kwboot.c b/tools/kwboot.c
index de433c1b04..8b748f0fdd 100644
--- a/tools/kwboot.c
+++ b/tools/kwboot.c
@@ -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;
}
Viele Grüße,
Stefan Roese
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