Skip to content

Signal handlers must preserve errno #219

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
troglobit merged 1 commit into from
Jul 18, 2026
Merged

Signal handlers must preserve errno #219

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
2 changes: 2 additions & 0 deletions src/script.c
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -35,6 +35,7 @@ static pid_t script = 0;

static void handler(int signo)
{
int save_errno = errno;
int status;
pid_t pid = 1;

Expand All @@ -55,6 +56,7 @@ static void handler(int signo)
smclog(LOG_WARNING, "Script %s returned error: %d", exec, status);
}
}
errno = save_errno;
}

int script_init(char *script)
Expand Down
3 changes: 3 additions & 0 deletions src/timer.c
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -164,9 +164,12 @@ static void run(int sd, void *arg)
/* write to pipe to create an event for select() on SIGALRM */
static void handler(int signo)
{
int save_errno = errno;

(void)signo;
if (write(timerfd[1], "!", 1) < 0)
smclog(LOG_DEBUG, "Failed write(pipe): %s", strerror(errno));
errno = save_errno;
}

/*
Expand Down