From ff7d8f209e2522d5065fe6244b910e80a92f389f Mon Sep 17 00:00:00 2001 From: Mattias Andrée Date: Sat, 25 Apr 2015 22:58:04 +0200 Subject: start on a more complex example MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Signed-off-by: Mattias Andrée --- doc/examples/daemon-depedencies/require.c | 37 +++++++++++++++++++++++++++++++ 1 file changed, 37 insertions(+) create mode 100644 doc/examples/daemon-depedencies/require.c (limited to 'doc/examples/daemon-depedencies/require.c') diff --git a/doc/examples/daemon-depedencies/require.c b/doc/examples/daemon-depedencies/require.c new file mode 100644 index 0000000..b6f7945 --- /dev/null +++ b/doc/examples/daemon-depedencies/require.c @@ -0,0 +1,37 @@ +#include +#include +#include +#include +#include + +#define t(stmt) if (stmt) goto fail + + +static char arg[4098]; + + +int main(int argc, char *argv[]) +{ + bus_t bus; + int i; + if (argc < 2) + return fprintf(stderr, "USAGE: %s daemon...", *argv), 2; + t(bus_open(&bus, getenv("BUS_INIT"), BUS_WRONLY)); + + for (i = 1; i < argc; i++) { + sprintf(arg, "grep '^%s$' < \"${XDG_RUNTIME_DIR}/started-daemons\" >/dev/null", argv[i]); + if (WEXITSTATUS(system(arg))) { + sprintf(arg, "%ji require %s", (intmax_t)getppid(), argv[i]); + t(bus_write(&bus, arg)); + } + } + + bus_close(&bus); + return 0; + +fail: + perror("require"); + bus_close(&bus); + return 1; +} + -- cgit v1.2.3-70-g09d2