60 lines
1.8 KiB
Diff
60 lines
1.8 KiB
Diff
From 62686ccc4631b6a5f73722fd7f1dcaca8782431c Mon Sep 17 00:00:00 2001
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From: Lennart Poettering <lennart@poettering.net>
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Date: Tue, 22 Nov 2022 12:56:55 +0100
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Subject: [PATCH] utmp-wtmp: handle EINTR gracefully when waiting to write to
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tty
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(cherry picked from commit 22ecfa83123dbfa2322346ac4e25ad2193a3b10c)
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Related: #2137584
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---
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src/shared/utmp-wtmp.c | 11 +++++++----
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1 file changed, 7 insertions(+), 4 deletions(-)
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diff --git a/src/shared/utmp-wtmp.c b/src/shared/utmp-wtmp.c
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index 20add0e81b..37a5bf7990 100644
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--- a/src/shared/utmp-wtmp.c
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+++ b/src/shared/utmp-wtmp.c
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@@ -12,6 +12,7 @@
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#include <utmpx.h>
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#include "alloc-util.h"
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+#include "errno-util.h"
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#include "fd-util.h"
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#include "hostname-util.h"
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#include "io-util.h"
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@@ -300,7 +301,7 @@ static int write_to_terminal(const char *tty, const char *message) {
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p = message;
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left = strlen(message);
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- end = now(CLOCK_MONOTONIC) + TIMEOUT_USEC;
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+ end = usec_add(now(CLOCK_MONOTONIC), TIMEOUT_USEC);
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while (left > 0) {
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ssize_t n;
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@@ -308,19 +309,21 @@ static int write_to_terminal(const char *tty, const char *message) {
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int k;
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t = now(CLOCK_MONOTONIC);
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-
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if (t >= end)
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return -ETIME;
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k = fd_wait_for_event(fd, POLLOUT, end - t);
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- if (k < 0)
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+ if (k < 0) {
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+ if (ERRNO_IS_TRANSIENT(k))
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+ continue;
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return k;
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+ }
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if (k == 0)
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return -ETIME;
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n = write(fd, p, left);
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if (n < 0) {
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- if (errno == EAGAIN)
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+ if (ERRNO_IS_TRANSIENT(errno))
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continue;
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return -errno;
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