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| author | Laurent Bercot <ska-skaware@skarnet.org> | 2023-06-06 19:27:21 +0000 |
|---|---|---|
| committer | Laurent Bercot <ska@appnovation.com> | 2023-06-06 19:27:21 +0000 |
| commit | 2a4e570485e8dee285843ca46f6dd6155972c437 (patch) | |
| tree | ecb19738ece505d9d1d71e6891196345a3a907b8 /src/shutdown | |
| parent | 392a1b8d4cfdb40812fa9434f06fd3ff73e39973 (diff) | |
| download | s6-linux-init-2a4e570485e8dee285843ca46f6dd6155972c437.tar.xz | |
Add notification to shutdownd
This saves 1 second between stage 3 and stage 4.
Signed-off-by: Laurent Bercot <ska@appnovation.com>
Diffstat (limited to 'src/shutdown')
| -rw-r--r-- | src/shutdown/s6-linux-init-shutdownd.c | 17 |
1 files changed, 15 insertions, 2 deletions
diff --git a/src/shutdown/s6-linux-init-shutdownd.c b/src/shutdown/s6-linux-init-shutdownd.c index be84baf..8b2741a 100644 --- a/src/shutdown/s6-linux-init-shutdownd.c +++ b/src/shutdown/s6-linux-init-shutdownd.c @@ -43,7 +43,7 @@ #define DOTSUFFIXLEN (sizeof(DOTSUFFIX) - 1) #define CONTAINERDIR S6_LINUX_INIT_TMPFS "/" CONTAINER_RESULTS -#define USAGE "s6-linux-init-shutdownd [ -c basedir ] [ -g gracetime ] [ -C ] [ -B ]" +#define USAGE "s6-linux-init-shutdownd [ -d notif ] [ -c basedir ] [ -g gracetime ] [ -C ] [ -B ]" #define dieusage() strerr_dieusage(100, USAGE) static char const *basedir = BASEDIR ; @@ -255,6 +255,7 @@ int main (int argc, char const *const *argv) unsigned int grace_time = 3000 ; tain deadline ; int fdr, fdw ; + unsigned int notif = 0 ; buffer b ; char what = 'S' ; char buf[64] ; @@ -264,10 +265,11 @@ int main (int argc, char const *const *argv) subgetopt l = SUBGETOPT_ZERO ; for (;;) { - int opt = subgetopt_r(argc, argv, "c:g:CB", &l) ; + int opt = subgetopt_r(argc, argv, "d:c:g:CB", &l) ; if (opt == -1) break ; switch (opt) { + case 'd' : if (!uint0_scan(l.arg, ¬if)) dieusage() ; break ; case 'c' : basedir = l.arg ; break ; case 'g' : if (!uint0_scan(l.arg, &grace_time)) dieusage() ; break ; case 'C' : inns = 1 ; break ; @@ -279,6 +281,11 @@ int main (int argc, char const *const *argv) } if (basedir[0] != '/') strerr_dief2x(100, "basedir", " must be an absolute path") ; + if (notif) + { + if (notif < 3) strerr_dief1x(100, "notification fd must be 3 or more") ; + if (fcntl(notif, F_GETFD) < 0) strerr_dief1sys(100, "invalid notification fd") ; + } if (grace_time > 300000) grace_time = 300000 ; /* if we're in stage 4, exec it immediately */ @@ -315,6 +322,12 @@ int main (int argc, char const *const *argv) buffer_init(&b, &buffer_read, fdr, buf, 64) ; tain_now_set_stopwatch_g() ; tain_add_g(&deadline, &tain_infinite_relative) ; + if (notif) + { + write(notif, "\n", 1) ; + close(notif) ; + notif = 0 ; + } for (;;) { |