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ask-password: improve log message when inotify limit is reached

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When inotify_add_watch() fails because of the inotify limit, errno is
set to ENOSPC and then gets shown to users as "No space left on device".
That is very confusing and requires in-depth knowledge of the C library.
Therefore, show user-friendly message when inotify limit is reached.

Fixes #6030.
This commit is contained in:
Jan Synacek 2018-10-08 15:14:38 +02:00 committed by Zbigniew Jędrzejewski-Szmek
parent e44c5a3ba6
commit 1432d2dbdf
1 changed files with 6 additions and 2 deletions
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8
src/tty-ask-password-agent/tty-ask-password-agent.c
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@ -519,8 +519,12 @@ static int watch_passwords(void) {
if (notify < 0)
return log_error_errno(errno, "Failed to allocate directory watch: %m");
if (inotify_add_watch(notify, "/run/systemd/ask-password", IN_CLOSE_WRITE|IN_MOVED_TO) < 0)
return log_error_errno(errno, "Failed to add /run/systemd/ask-password to directory watch: %m");
if (inotify_add_watch(notify, "/run/systemd/ask-password", IN_CLOSE_WRITE|IN_MOVED_TO) < 0) {
if (errno == ENOSPC)
return log_error_errno(errno, "Failed to add /run/systemd/ask-password to directory watch: inotify watch limit reached");
else
return log_error_errno(errno, "Failed to add /run/systemd/ask-password to directory watch: %m");
}
assert_se(sigemptyset(&mask) >= 0);
assert_se(sigset_add_many(&mask, SIGINT, SIGTERM, -1) >= 0);