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Diffstat (limited to 'src/libs6/s6_supervise_unlink.c')
-rw-r--r--src/libs6/s6_supervise_unlink.c45
1 files changed, 45 insertions, 0 deletions
diff --git a/src/libs6/s6_supervise_unlink.c b/src/libs6/s6_supervise_unlink.c
new file mode 100644
index 0000000..d4bbe73
--- /dev/null
+++ b/src/libs6/s6_supervise_unlink.c
@@ -0,0 +1,45 @@
+/* ISC license. */
+
+#include <errno.h>
+#include <string.h>
+#include <unistd.h>
+#include <limits.h>
+
+#include <skalibs/posixplz.h>
+#include <skalibs/allreadwrite.h>
+#include <skalibs/djbunix.h>
+
+#include <s6/s6-supervise.h>
+
+#ifdef PATH_MAX
+# define S6_PATH_MAX PATH_MAX
+#else
+# define S6_PATH_MAX 4096
+#endif
+
+void s6_supervise_unlink (char const *scandir, char const *name, uint32_t options)
+{
+ int e = errno ;
+ int fd = -1 ;
+ size_t scandirlen = strlen(scandir) ;
+ size_t namelen = strlen(name) ;
+ char fn[scandirlen + namelen + sizeof(S6_SUPERVISE_CTLDIR) + 10] ;
+ memcpy(fn, scandir, scandirlen) ;
+ fn[scandirlen] = '/' ;
+ memcpy(fn + scandirlen + 1, name, namelen) ;
+ if (options & 1)
+ {
+ fn[scandirlen + 1 + namelen] = '/' ;
+ memcpy(fn + scandirlen + 1 + namelen + 1, S6_SUPERVISE_CTLDIR, sizeof(S6_SUPERVISE_CTLDIR) - 1) ;
+ memcpy(fn + scandirlen + 1 + namelen + sizeof(S6_SUPERVISE_CTLDIR), "/control", 9) ;
+ fd = open_write(fn) ;
+ }
+ fn[scandirlen + 1 + namelen] = 0 ;
+ unlink_void(fn) ;
+ if (fd >= 0)
+ {
+ fd_write(fd, "xd", 1 + !!(options & 2)) ;
+ fd_close(fd) ;
+ }
+ errno = e ;
+}