On 1/25/22 18:13, Marek Behún wrote:
From: Pali Rohár <[email protected]>
The select() and read() syscalls may be interrupted. Handle EINTR and
retry them.
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 | 10 +++++++---
1 file changed, 7 insertions(+), 3 deletions(-)
diff --git a/tools/kwboot.c b/tools/kwboot.c
index 8b748f0fdd..fca1c73c55 100644
--- a/tools/kwboot.c
+++ b/tools/kwboot.c
@@ -409,15 +409,19 @@ kwboot_tty_recv(int fd, void *buf, size_t len, int timeo)
do {
nfds = select(fd + 1, &rfds, NULL, NULL, &tv);
- if (nfds < 0)
+ if (nfds < 0 && errno == EINTR)
+ continue;
+ else if (nfds < 0)
goto out;
- if (!nfds) {
+ else if (!nfds) {
errno = ETIMEDOUT;
goto out;
}
n = read(fd, buf, len);
- if (n <= 0)
+ if (n < 0 && errno == EINTR)
+ continue;
+ else if (n <= 0)
goto out;
buf = (char *)buf + n;
Viele Grüße,
Stefan Roese
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