summaryrefslogtreecommitdiff
path: root/src/supervision/s6-notifywhenup.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/supervision/s6-notifywhenup.c')
-rw-r--r--src/supervision/s6-notifywhenup.c99
1 files changed, 0 insertions, 99 deletions
diff --git a/src/supervision/s6-notifywhenup.c b/src/supervision/s6-notifywhenup.c
deleted file mode 100644
index 8c45926..0000000
--- a/src/supervision/s6-notifywhenup.c
+++ /dev/null
@@ -1,99 +0,0 @@
-/* ISC license. */
-
-#include <unistd.h>
-#include <errno.h>
-#include <skalibs/uint.h>
-#include <skalibs/bytestr.h>
-#include <skalibs/sgetopt.h>
-#include <skalibs/strerr2.h>
-#include <skalibs/allreadwrite.h>
-#include <skalibs/tai.h>
-#include <skalibs/iopause.h>
-#include <skalibs/djbunix.h>
-#include <s6/ftrigw.h>
-#include <s6/s6-supervise.h>
-
-#define USAGE "s6-notifywhenup [ -d fd ] [ -e fifodir ] [ -f ] [ -X ] [ -t timeout ] prog..."
-#define dieusage() strerr_dieusage(100, USAGE)
-
-static int run_child (int fd, char const *fifodir, unsigned int timeout)
-{
- char dummy[4096] ;
- iopause_fd x = { .fd = fd, .events = IOPAUSE_READ } ;
- tain_t deadline ;
- char pack[TAIN_PACK] ;
- if (!tain_now_g()) strerr_diefu1sys(111, "tain_now") ;
- if (timeout) tain_from_millisecs(&deadline, timeout) ;
- else deadline = tain_infinite_relative ;
- tain_add_g(&deadline, &deadline) ;
- for (;;)
- {
- register int r = iopause_g(&x, 1, &deadline) ;
- if (r < 0) strerr_diefu1sys(111, "iopause") ;
- if (!r) return 99 ;
- r = sanitize_read(fd_read(fd, dummy, 4096)) ;
- if (r < 0)
- if (errno == EPIPE) return 1 ;
- else strerr_diefu1sys(111, "read from parent") ;
- else if (r)
- if (byte_chr(dummy, r, '\n') < r) break ;
- }
- close(fd) ;
- tain_pack(pack, &STAMP) ;
- if (!openwritenclose_suffix(S6_SUPERVISE_READY_FILENAME, pack, TAIN_PACK, ".new"))
- strerr_warnwu1sys("open " S6_SUPERVISE_READY_FILENAME " for writing") ;
- ftrigw_notify(fifodir, 'U') ;
- return 0 ;
-}
-
-int main (int argc, char const *const *argv, char const *const *envp)
-{
- unsigned int fd = 1 ;
- char const *fifodir = "event" ;
- int df = 1, fake = 0 ;
- unsigned int timeout = 0 ;
- PROG = "s6-notifywhenup" ;
- {
- subgetopt_t l = SUBGETOPT_ZERO ;
- for (;;)
- {
- register int opt = subgetopt_r(argc, argv, "Xd:e:ft:", &l) ;
- if (opt == -1) break ;
- switch (opt)
- {
- case 'X' : fake = 1 ; break ;
- case 'd' : if (!uint0_scan(l.arg, &fd)) dieusage() ; break ;
- case 'e' : fifodir = l.arg ; break ;
- case 'f' : df = 0 ; break ;
- case 't' : if (!uint0_scan(l.arg, &timeout)) dieusage() ; break ;
- default : dieusage() ;
- }
- }
- argc -= l.ind ; argv += l.ind ;
- }
- if (!argc) dieusage() ;
- strerr_warnw1x("this program is deprecated. Use a notification-fd file instead.") ;
-
- {
- int p[2] ;
- pid_t pid ;
- if (pipe(p) < 0) strerr_diefu1sys(111, "pipe") ;
- pid = df ? doublefork() : fork() ;
- if (pid < 0) strerr_diefu1sys(111, df ? "doublefork" : "fork") ;
- else if (!pid)
- {
- PROG = "s6-notifywhenup (child)" ;
- close(p[1]) ;
- return run_child(p[0], fifodir, timeout) ;
- }
- close(p[0]) ;
- if (fd_move((int)fd, p[1]) < 0) strerr_diefu1sys(111, "fd_move") ;
- }
- if (fake)
- {
- write(fd, "\n", 1) ;
- close(fd) ;
- }
- pathexec_run(argv[0], argv, envp) ;
- strerr_dieexec(111, argv[0]) ;
-}