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/* ISC license. */
#include <sys/stat.h>
#include <fcntl.h>
#include <errno.h>
#include <string.h>
#include <skalibs/djbunix.h>
#include <skalibs/unix-transactional.h>
#include <s6/s6-supervise.h>
int s6_svc_writectl (char const *service, char const *subdir, char const *s, size_t len)
{
size_t svlen = strlen(service) ;
size_t sublen = strlen(subdir) ;
int r ;
char fn[svlen + sublen + 10] ;
memcpy(fn, service, svlen) ;
fn[svlen] = '/' ;
memcpy(fn + svlen + 1, subdir, sublen) ;
memcpy(fn + svlen + 1 + sublen, "/control", 9) ;
r = s6_svc_write(fn, s, len) ;
if (r != -2) return r ;
/* Now we need to investigate what went wrong... */
{
int fd, fdsub ;
fd = open(service, O_RDONLY | O_DIRECTORY) ;
if (fd < 0) return -1 ;
fdsub = open2_at(fd, subdir, O_RDONLY | O_DIRECTORY) ;
fd_close(fd) ;
if (fdsub < 0) return (errno == ENOENT) ? 0 : -2 ;
fd_close(fdsub) ;
return -2 ;
}
}
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