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authorLaurent Bercot <ska-skaware@skarnet.org>2015-01-23 23:47:14 +0000
committerLaurent Bercot <ska-skaware@skarnet.org>2015-01-23 23:47:14 +0000
commit49cb17940e403431566dc7b5a312624f14eb25d0 (patch)
tree2f85adb6b0083eec04cce56fd1954889adcdd478 /src/fdholder/s6-fdholder-retrievec.c
parente62d3ae45e9bf3b97551b8879bf6c441ff961ec1 (diff)
downloads6-49cb17940e403431566dc7b5a312624f14eb25d0.tar.xz
Added fdholder, beta. Documentation will come next.
Diffstat (limited to 'src/fdholder/s6-fdholder-retrievec.c')
-rw-r--r--src/fdholder/s6-fdholder-retrievec.c52
1 files changed, 52 insertions, 0 deletions
diff --git a/src/fdholder/s6-fdholder-retrievec.c b/src/fdholder/s6-fdholder-retrievec.c
new file mode 100644
index 0000000..2aea31e
--- /dev/null
+++ b/src/fdholder/s6-fdholder-retrievec.c
@@ -0,0 +1,52 @@
+/* ISC license. */
+
+#include <skalibs/uint.h>
+#include <skalibs/strerr2.h>
+#include <skalibs/sgetopt.h>
+#include <skalibs/tai.h>
+#include <skalibs/djbunix.h>
+#include <s6/s6-fdholder.h>
+
+#define USAGE "s6-fdholder-retrievec [ -D ] [ -t timeout ] id prog..."
+#define dieusage() strerr_dieusage(100, USAGE)
+
+int main (int argc, char const *const *argv, char const *const *envp)
+{
+ s6_fdholder_t a = S6_FDHOLDER_ZERO ;
+ tain_t deadline ;
+ int fd ;
+ int dodelete = 0 ;
+ PROG = "s6-fdholder-retrievec" ;
+ {
+ unsigned int t = 0 ;
+ subgetopt_t l = SUBGETOPT_ZERO ;
+ for (;;)
+ {
+ register int opt = subgetopt_r(argc, argv, "Dt:", &l) ;
+ if (opt == -1) break ;
+ switch (opt)
+ {
+ case 'D' : dodelete = 1 ; break ;
+ case 't' : if (!uint0_scan(l.arg, &t)) dieusage() ; break ;
+ default : dieusage() ;
+ }
+ }
+ argc -= l.ind ; argv += l.ind ;
+ if (t) tain_from_millisecs(&deadline, t) ;
+ else deadline = tain_infinite_relative ;
+ }
+ if (!argc) dieusage() ;
+
+ s6_fdholder_init(&a, 6) ;
+ tain_now_g() ;
+ tain_add_g(&deadline, &deadline) ;
+ fd = s6_fdholder_retrieve_maybe_delete_g(&a, argv[0], dodelete, &deadline) ;
+ if (fd < 0) strerr_diefu2sys(111, "retrieve fd for id ", argv[0]) ;
+ else if (!fd)
+ {
+ if (uncoe(0) < 0) strerr_diefu1sys(111, "uncoe stdin") ;
+ }
+ else if (fd_move(0, fd) < 0) strerr_diefu1sys(111, "move fd") ;
+ pathexec_run(argv[1], argv+1, envp) ;
+ strerr_dieexec(111, argv[1]) ;
+}