diff options
| author | Denys Vlasenko | 2009-07-19 14:29:18 +0200 |
|---|---|---|
| committer | Denys Vlasenko | 2009-07-19 14:29:18 +0200 |
| commit | 3ed181b7ac8e696cd28caf003ae9dcbeebc03757 (patch) | |
| tree | 5bd0019e71d7d00a93381e2935babfb92b2ce9b9 /init/init.c | |
| parent | 4abfc2642dcff669798364835f53c804b3d7bcef (diff) | |
| download | busybox-3ed181b7ac8e696cd28caf003ae9dcbeebc03757.zip busybox-3ed181b7ac8e696cd28caf003ae9dcbeebc03757.tar.gz | |
init: make comment more understandable. no code changes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Diffstat (limited to 'init/init.c')
| -rw-r--r-- | init/init.c | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/init/init.c b/init/init.c index ce26428..35f64cf 100644 --- a/init/init.c +++ b/init/init.c @@ -960,7 +960,6 @@ int init_main(int argc UNUSED_PARAM, char **argv) bb_signals_recursive_norestart((1 << SIGHUP), record_signo); /* Now run the looping stuff for the rest of forever. - * NB: if delayed signal happened, avoid blocking in wait(). */ while (1) { int maybe_WNOHANG; @@ -976,10 +975,11 @@ int init_main(int argc UNUSED_PARAM, char **argv) maybe_WNOHANG |= check_delayed_sigs(); /* Wait for any child process(es) to exit. - * NB: "delayed" signals will also interrupt this wait(), - * bb_signals_recursive_norestart() set them up for that. - * This guarantees we won't be stuck here - * till next orphan dies. + * + * If check_delayed_sigs above reported that a signal + * was caught, wait will be nonblocking. This ensures + * that if SIGHUP has reloaded inittab, respawn and askfirst + * actions will not be delayed until next child death. */ if (maybe_WNOHANG) maybe_WNOHANG = WNOHANG; @@ -987,6 +987,9 @@ int init_main(int argc UNUSED_PARAM, char **argv) pid_t wpid; struct init_action *a; + /* If signals happen _in_ the wait, they interrupt it, + * bb_signals_recursive_norestart set them up that way + */ wpid = waitpid(-1, NULL, maybe_WNOHANG); if (wpid <= 0) break; |