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ltx_send_message() retry write properly on EAGAIN #1

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Merged
acerv merged 1 commit into from
Aug 13, 2025
Merged

ltx_send_message() retry write properly on EAGAIN #1

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13 changes: 11 additions & 2 deletions ltx.c
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Original file line number Diff line number Diff line change
Expand Up @@ -2,6 +2,7 @@
/*
* Copyright (c) 2022 Richard Palethorpe <rpalethorpe@suse.com>
* Copyright (c) 2023 Andrea Cervesato <andrea.cervesato@suse.com>
* Copyright (c) 2025 Cyril Hrubis <chrubis@suse.cz>
*/

#define _GNU_SOURCE /* CLOCK_MONOTONIC */
Expand Down Expand Up @@ -213,9 +214,17 @@ static void ltx_send_message(

ssize_t pos = 0, ret;
do {
ret = write(session->stdout_fd, msg->data, msg->length);
if (ret == -1)
ret = write(session->stdout_fd, msg->data+pos, msg->length-pos);

if (ret == -1 && errno == EAGAIN) {
usleep(100);
continue;
}

if (ret == -1) {
fprintf(stderr, "write() failed %s", strerror(errno));
break;
}

pos += ret;
} while (pos < (ssize_t)msg->length);
Expand Down