diff options
Diffstat (limited to 'src/supervision/s6-svscan.c')
| -rw-r--r-- | src/supervision/s6-svscan.c | 20 |
1 files changed, 17 insertions, 3 deletions
diff --git a/src/supervision/s6-svscan.c b/src/supervision/s6-svscan.c index 497970e..0d06bac 100644 --- a/src/supervision/s6-svscan.c +++ b/src/supervision/s6-svscan.c @@ -5,6 +5,7 @@ #include <sys/wait.h> #include <unistd.h> #include <errno.h> +#include <fcntl.h> #include <signal.h> #include <skalibs/allreadwrite.h> #include <skalibs/sgetopt.h> @@ -20,7 +21,8 @@ #include <s6/config.h> #include <s6/s6-supervise.h> -#define USAGE "s6-svscan [ -S | -s ] [ -c maxservices ] [ -t timeout ] [ dir ]" +#define USAGE "s6-svscan [ -S | -s ] [ -c maxservices ] [ -t timeout ] [ -d notif ] [ dir ]" +#define dieusage() strerr_dieusage(100, USAGE) #define FINISH_PROG S6_SVSCAN_CTLDIR "/finish" #define CRASH_PROG S6_SVSCAN_CTLDIR "/crash" @@ -448,13 +450,14 @@ int main (int argc, char const *const *argv) { iopause_fd x[2] = { { -1, IOPAUSE_READ, 0 }, { -1, IOPAUSE_READ, 0 } } ; int divertsignals = 0 ; + unsigned int notif = 0 ; PROG = "s6-svscan" ; { subgetopt_t l = SUBGETOPT_ZERO ; unsigned int t = 0 ; for (;;) { - int opt = subgetopt_r(argc, argv, "Sst:c:", &l) ; + int opt = subgetopt_r(argc, argv, "Sst:c:d:", &l) ; if (opt == -1) break ; switch (opt) { @@ -462,7 +465,12 @@ int main (int argc, char const *const *argv) case 's' : divertsignals = 1 ; break ; case 't' : if (uint0_scan(l.arg, &t)) break ; case 'c' : if (uint0_scan(l.arg, &max)) break ; - default : strerr_dieusage(100, USAGE) ; + case 'd' : + if (!uint0_scan(l.arg, ¬if)) dieusage() ; + 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") ; + break ; + default : dieusage() ; } } argc -= l.ind ; argv += l.ind ; @@ -501,6 +509,12 @@ int main (int argc, char const *const *argv) if (selfpipe_trapset(&set) < 0) strerr_diefu1sys(111, "trap signals") ; } + if (notif) + { + fd_write(notif, "\n", 1) ; + fd_close(notif) ; + notif = 0 ; + } { struct svinfo_s blob[max] ; /* careful with that stack, Eugene */ |