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author | Laurent Bercot <ska-skaware@skarnet.org> | 2015-01-20 22:35:45 +0000 |
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committer | Laurent Bercot <ska-skaware@skarnet.org> | 2015-01-20 22:35:45 +0000 |
commit | 5af73b17714076498a98b6a5679a4700399eaaa0 (patch) | |
tree | d81912cf894edfb056e4a59caf7530c2b754181f /src/daemontools-extras/s6-notifywhenup.c | |
parent | 2844097114fe7b36e03ff863ce8daaaf9d6583c7 (diff) | |
download | s6-5af73b17714076498a98b6a5679a4700399eaaa0.tar.xz |
Add readiness support to s6-svstat
Diffstat (limited to 'src/daemontools-extras/s6-notifywhenup.c')
-rw-r--r-- | src/daemontools-extras/s6-notifywhenup.c | 91 |
1 files changed, 0 insertions, 91 deletions
diff --git a/src/daemontools-extras/s6-notifywhenup.c b/src/daemontools-extras/s6-notifywhenup.c deleted file mode 100644 index e1c02b7..0000000 --- a/src/daemontools-extras/s6-notifywhenup.c +++ /dev/null @@ -1,91 +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 ] [ -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 ; - 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) ; - fd = open_create(S6_SUPERVISE_READY_FILENAME) ; - if (fd < 0) strerr_warnwu1sys("touch " S6_SUPERVISE_READY_FILENAME) ; - else close(fd) ; - 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 ; - unsigned int timeout = 0 ; - PROG = "s6-notifywhenup" ; - { - subgetopt_t l = SUBGETOPT_ZERO ; - for (;;) - { - register int opt = subgetopt_r(argc, argv, "d:e:ft:", &l) ; - if (opt == -1) break ; - switch (opt) - { - 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() ; - - { - 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") ; - } - pathexec_run(argv[0], argv, envp) ; - strerr_dieexec(111, argv[1]) ; -} |