summaryrefslogtreecommitdiff
path: root/src
diff options
context:
space:
mode:
Diffstat (limited to 'src')
-rw-r--r--src/include/s6/s6-supervise.h22
-rw-r--r--src/libs6/deps-lib/s64
-rw-r--r--src/libs6/s6_dtally_pack.c11
-rw-r--r--src/libs6/s6_dtally_read.c51
-rw-r--r--src/libs6/s6_dtally_unpack.c11
-rw-r--r--src/libs6/s6_dtally_write.c16
-rw-r--r--src/libs6/s6_svstatus_pack.c3
-rw-r--r--src/libs6/s6_svstatus_unpack.c1
-rw-r--r--src/supervision/s6-supervise.c27
9 files changed, 144 insertions, 2 deletions
diff --git a/src/include/s6/s6-supervise.h b/src/include/s6/s6-supervise.h
index bbd8539..187bc20 100644
--- a/src/include/s6/s6-supervise.h
+++ b/src/include/s6/s6-supervise.h
@@ -11,6 +11,8 @@
#define S6_SVSCAN_CTLDIR ".s6-svscan"
#define S6_SVSTATUS_FILENAME S6_SUPERVISE_CTLDIR "/status"
#define S6_SVSTATUS_SIZE 35
+#define S6_DTALLY_FILENAME S6_SUPERVISE_CTLDIR "/death_tally"
+#define S6_MAX_DEATH_TALLY 4096
extern int s6_svc_ok (char const *) ;
extern int s6_svc_write (char const *, char const *, size_t) ;
@@ -32,6 +34,7 @@ struct s6_svstatus_s
unsigned int flagwant : 1 ; /* unused */
unsigned int flagwantup : 1 ;
unsigned int flagready : 1 ;
+ unsigned int flagthrottled : 1 ;
} ;
#define S6_SVSTATUS_ZERO \
@@ -44,7 +47,8 @@ struct s6_svstatus_s
.flagfinishing = 0, \
.flagwant = 1, \
.flagwantup = 1, \
- .flagready = 1 \
+ .flagready = 1, \
+ .flagthrottled = 0 \
}
extern void s6_svstatus_pack (char *, s6_svstatus_t const *) ;
@@ -56,4 +60,20 @@ extern int s6_svstatus_write (char const *, s6_svstatus_t const *) ;
extern int s6_supervise_lock (char const *) ;
extern int s6_supervise_lock_mode (char const *, unsigned int, unsigned int) ;
+typedef struct s6_dtally_s s6_dtally_t, *s6_dtally_ref ;
+struct s6_dtally_s
+{
+ tain_t stamp ;
+ unsigned char exitcode ;
+ unsigned char sig ;
+} ;
+#define S6_DTALLY_ZERO { .stamp = TAIN_ZERO, .exitcode = 0, .sig = 0 }
+
+#define S6_DTALLY_PACK (TAIN_PACK + 2)
+
+extern void s6_dtally_pack (char *, s6_dtally_t const *) ;
+extern void s6_dtally_unpack (char const *, s6_dtally_t *) ;
+extern ssize_t s6_dtally_read (char const *, s6_dtally_t *, size_t) ;
+extern int s6_dtally_write (char const *, s6_dtally_t const *, size_t) ;
+
#endif
diff --git a/src/libs6/deps-lib/s6 b/src/libs6/deps-lib/s6
index 47a3335..65612cc 100644
--- a/src/libs6/deps-lib/s6
+++ b/src/libs6/deps-lib/s6
@@ -28,6 +28,10 @@ s6_accessrules_uidgid_cdb.o
s6_accessrules_uidgid_fs.o
s6_supervise_lock.o
s6_supervise_lock_mode.o
+s6_dtally_pack.o
+s6_dtally_unpack.o
+s6_dtally_read.o
+s6_dtally_write.o
s6_svc_lock_take.o
s6_svc_lock_release.o
s6_svc_ok.o
diff --git a/src/libs6/s6_dtally_pack.c b/src/libs6/s6_dtally_pack.c
new file mode 100644
index 0000000..1608e78
--- /dev/null
+++ b/src/libs6/s6_dtally_pack.c
@@ -0,0 +1,11 @@
+/* ISC license. */
+
+#include <skalibs/tai.h>
+#include <s6/s6-supervise.h>
+
+void s6_dtally_pack (char *pack, s6_dtally_t const *d)
+{
+ tain_pack(pack, &d->stamp) ;
+ pack[TAIN_PACK] = d->exitcode ;
+ pack[TAIN_PACK + 1] = d->sig ;
+}
diff --git a/src/libs6/s6_dtally_read.c b/src/libs6/s6_dtally_read.c
new file mode 100644
index 0000000..3906b93
--- /dev/null
+++ b/src/libs6/s6_dtally_read.c
@@ -0,0 +1,51 @@
+/* ISC license. */
+
+#include <sys/stat.h>
+#include <string.h>
+#include <unistd.h>
+#include <errno.h>
+#include <skalibs/allreadwrite.h>
+#include <skalibs/tai.h>
+#include <skalibs/djbunix.h>
+#include <s6/s6-supervise.h>
+
+static int truncit (char const *s)
+{
+ int fd = open_trunc(s) ;
+ if (fd < 0) return -1 ;
+ fd_close(fd) ;
+ return 0 ;
+}
+
+ssize_t s6_dtally_read (char const *sv, s6_dtally_t *tab, size_t max)
+{
+ size_t len = strlen(sv) ;
+ size_t n ;
+ int fd ;
+ struct stat st ;
+ char fn[len + sizeof(S6_DTALLY_FILENAME) + 1] ;
+ memcpy(fn, sv, len) ;
+ memcpy(fn + len, "/" S6_DTALLY_FILENAME, sizeof(S6_DTALLY_FILENAME) + 1) ;
+ fd = open_read(fn) ;
+ if (fd < 0) return errno == ENOENT ? truncit(fn) : -1 ;
+ if (fstat(fd, &st) < 0) goto err ;
+ if (st.st_size % S6_DTALLY_PACK)
+ {
+ fd_close(fd) ;
+ return truncit(fn) ;
+ }
+ n = st.st_size / S6_DTALLY_PACK ;
+ if (n > max) n = max ;
+ {
+ char tmp[n ? S6_DTALLY_PACK * n : 1] ;
+ if (lseek(fd, -(off_t)(n * S6_DTALLY_PACK), SEEK_END) < 0) goto err ;
+ if (allread(fd, tmp, n * S6_DTALLY_PACK) < n * S6_DTALLY_PACK) goto err ;
+ fd_close(fd) ;
+ for (size_t i = 0 ; i < n ; i++) s6_dtally_unpack(tmp + i * S6_DTALLY_PACK, tab + i) ;
+ }
+ return n ;
+
+ err:
+ fd_close(fd) ;
+ return -1 ;
+}
diff --git a/src/libs6/s6_dtally_unpack.c b/src/libs6/s6_dtally_unpack.c
new file mode 100644
index 0000000..8fca787
--- /dev/null
+++ b/src/libs6/s6_dtally_unpack.c
@@ -0,0 +1,11 @@
+/* ISC license. */
+
+#include <skalibs/tai.h>
+#include <s6/s6-supervise.h>
+
+void s6_dtally_unpack (char const *pack, s6_dtally_t *d)
+{
+ tain_unpack(pack, &d->stamp) ;
+ d->exitcode = pack[TAIN_PACK] ;
+ d->sig = pack[TAIN_PACK + 1] ;
+}
diff --git a/src/libs6/s6_dtally_write.c b/src/libs6/s6_dtally_write.c
new file mode 100644
index 0000000..785376a
--- /dev/null
+++ b/src/libs6/s6_dtally_write.c
@@ -0,0 +1,16 @@
+/* ISC license. */
+
+#include <string.h>
+#include <skalibs/djbunix.h>
+#include <s6/s6-supervise.h>
+
+int s6_dtally_write (char const *sv, s6_dtally_t const *tab, size_t n)
+{
+ size_t len = strlen(sv) ;
+ char fn[len + sizeof(S6_DTALLY_FILENAME) + 1] ;
+ char tmp[n ? S6_DTALLY_PACK * n : 1] ;
+ memcpy(fn, sv, len) ;
+ memcpy(fn + len, "/" S6_DTALLY_FILENAME, sizeof(S6_DTALLY_FILENAME) + 1) ;
+ for (size_t i = 0 ; i < n ; i++) s6_dtally_pack(tmp + i * S6_DTALLY_PACK, tab + i) ;
+ return openwritenclose_suffix(fn, tmp, n * S6_DTALLY_PACK, ".new") ;
+}
diff --git a/src/libs6/s6_svstatus_pack.c b/src/libs6/s6_svstatus_pack.c
index fbce109..ef2d5bd 100644
--- a/src/libs6/s6_svstatus_pack.c
+++ b/src/libs6/s6_svstatus_pack.c
@@ -17,5 +17,6 @@ void s6_svstatus_pack (char *pack, s6_svstatus_t const *sv)
(sv->flagfinishing << 1) |
(sv->flagwant << 2) |
(sv->flagwantup << 3) |
- (sv->flagready << 4) ;
+ (sv->flagready << 4) |
+ (sv->flagthrottled << 5) ;
}
diff --git a/src/libs6/s6_svstatus_unpack.c b/src/libs6/s6_svstatus_unpack.c
index dc358d3..b641c8c 100644
--- a/src/libs6/s6_svstatus_unpack.c
+++ b/src/libs6/s6_svstatus_unpack.c
@@ -21,4 +21,5 @@ void s6_svstatus_unpack (char const *pack, s6_svstatus_t *sv)
sv->flagwant = !!(pack[34] & 4) ;
sv->flagwantup = !!(pack[34] & 8) ;
sv->flagready = !!(pack[34] & 16) ;
+ sv->flagthrottled = !!(pack[34] & 32) ;
}
diff --git a/src/supervision/s6-supervise.c b/src/supervision/s6-supervise.c
index 71f247e..00c2358 100644
--- a/src/supervision/s6-supervise.c
+++ b/src/supervision/s6-supervise.c
@@ -332,6 +332,7 @@ static int uplastup_z (void)
status.wstat = (int)status.pid ;
status.flagpaused = 0 ;
status.flagready = 0 ;
+ status.flagthrottled = 0 ;
flagdying = 0 ;
tain_copynow(&status.stamp) ;
if (notifyfd >= 0)
@@ -339,6 +340,27 @@ static int uplastup_z (void)
fd_close(notifyfd) ;
notifyfd = -1 ;
}
+
+ {
+ unsigned int n ;
+ if (!read_uint("max-death-tally", &n)) n = 20 ;
+ if (n > S6_MAX_DEATH_TALLY) n = S6_MAX_DEATH_TALLY ;
+ if (n)
+ {
+ s6_dtally_t tab[n+1] ;
+ ssize_t m = s6_dtally_read(".", tab, n) ;
+ if (m < 0) strerr_warnwu2sys("read ", S6_DTALLY_FILENAME) ;
+ else
+ {
+ tab[m].stamp = status.stamp ;
+ tab[m].sig = WIFSIGNALED(status.wstat) ? WTERMSIG(status.wstat) : 0 ;
+ tab[m].exitcode = WIFSIGNALED(status.wstat) ? 128 + WTERMSIG(status.wstat) : WEXITSTATUS(status.wstat) ;
+ if (m >= n ? s6_dtally_write(".", tab+1, n) : s6_dtally_write(".", tab, m+1))
+ strerr_warnwu2sys("write ", S6_DTALLY_FILENAME) ;
+ }
+ }
+ }
+
status.pid = fork() ;
if (status.pid < 0)
{
@@ -617,6 +639,11 @@ int main (int argc, char const *const *argv)
if (!ftrigw_clean(S6_SUPERVISE_EVENTDIR))
strerr_warnwu2sys("ftrigw_clean ", S6_SUPERVISE_EVENTDIR) ;
+ {
+ int fd = open_trunc(S6_DTALLY_FILENAME) ;
+ if (fd < 0) strerr_diefu2sys(111, "truncate ", S6_DTALLY_FILENAME) ;
+ fd_close(fd) ;
+ }
if (access("down", F_OK) == 0) status.flagwantup = 0 ;
else if (errno != ENOENT)
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-10 21:28:40 +0000