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path: root/src/fdholder/s6-fdholder-getdumpc.c
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Diffstat (limited to 'src/fdholder/s6-fdholder-getdumpc.c')
-rw-r--r--src/fdholder/s6-fdholder-getdumpc.c82
1 files changed, 82 insertions, 0 deletions
diff --git a/src/fdholder/s6-fdholder-getdumpc.c b/src/fdholder/s6-fdholder-getdumpc.c
new file mode 100644
index 0000000..ff7fd9d
--- /dev/null
+++ b/src/fdholder/s6-fdholder-getdumpc.c
@@ -0,0 +1,82 @@
+/* ISC license. */
+
+#include <skalibs/uint.h>
+#include <skalibs/bytestr.h>
+#include <skalibs/strerr2.h>
+#include <skalibs/sgetopt.h>
+#include <skalibs/tai.h>
+#include <skalibs/djbunix.h>
+#include <skalibs/genalloc.h>
+#include <s6/s6-fdholder.h>
+
+#define USAGE "s6-fdholder-getdumpc [ -t timeout ] 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 ;
+ genalloc dump = GENALLOC_ZERO ;
+ tain_t deadline, halfinfinite ;
+ PROG = "s6-fdholder-getdumpc" ;
+ {
+ unsigned int t = 0 ;
+ subgetopt_t l = SUBGETOPT_ZERO ;
+ for (;;)
+ {
+ register int opt = subgetopt_r(argc, argv, "t:", &l) ;
+ if (opt == -1) break ;
+ switch (opt)
+ {
+ 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) ;
+ if (!s6_fdholder_getdump_g(&a, &dump, &deadline))
+ strerr_diefu1sys(111, "get dump") ;
+ s6_fdholder_free(&a) ;
+ tain_half(&halfinfinite, &tain_infinite_relative) ;
+ tain_add_g(&halfinfinite, &halfinfinite) ;
+ {
+ unsigned int n = genalloc_len(s6_fdholder_fd_t, &dump) ;
+ unsigned int pos = 0, i = 0 ;
+ char modifs[7 + UINT_FMT + (25 + TIMESTAMP + 4 * UINT_FMT) * n] ;
+ byte_copy(modifs + pos, 7, "S6_FD#=") ; pos += 7 ;
+ pos += uint_fmt(modifs + pos, n) ;
+ modifs[pos++] = 0 ;
+ for (; i < n ; i++)
+ {
+ s6_fdholder_fd_t *p = genalloc_s(s6_fdholder_fd_t, &dump) + i ;
+ unsigned int len = str_len(p->id) + 1 ;
+ if (uncoe(p->fd) < 0) strerr_diefu1sys(111, "uncoe") ;
+ byte_copy(modifs + pos, 6, "S6_FD_") ; pos += 6 ;
+ pos += uint_fmt(modifs + pos, i) ;
+ modifs[pos++] = '=' ;
+ pos += uint_fmt(modifs + pos, p->fd) ;
+ modifs[pos++] = 0 ;
+ byte_copy(modifs + pos, 8, "S6_FDID_") ; pos += 8 ;
+ pos += uint_fmt(modifs + pos, i) ;
+ modifs[pos++] = '=' ;
+ byte_copy(modifs + pos, len, p->id) ;
+ pos += len ;
+ if (tain_less(&p->limit, &halfinfinite))
+ {
+ byte_copy(modifs + pos, 11, "S6_FDLIMIT_") ; pos += 11 ;
+ pos += uint_fmt(modifs + pos, i) ;
+ modifs[pos++] = '=' ;
+ pos += timestamp_fmt(modifs + pos, &p->limit) ;
+ modifs[pos++] = 0 ;
+ }
+ }
+ pathexec_r(argv, envp, env_len(envp), modifs, pos) ;
+ }
+ strerr_dieexec(111, argv[0]) ;
+}