tree-wide: use -EBADF for fd initialization

-1 was used everywhere, but -EBADF or -EBADFD started being used in various
places. Let's make things consistent in the new style.

Note that there are two candidates:
EBADF 9 Bad file descriptor
EBADFD 77 File descriptor in bad state

Since we're initializating the fd, we're just assigning a value that means
"no fd yet", so it's just a bad file descriptor, and the first errno fits
better. If instead we had a valid file descriptor that became invalid because
of some operation or state change, the other errno would fit better.

In some places, initialization is dropped if unnecessary.

1 files changed, 2 insertions, 2 deletions

diff --git a/src/activate/activate.c b/src/activate/activate.c
index 5934e7a57a..16463a9b93 100644
--- a/src/activate/activate.c
+++ b/src/activate/activate.c
@@ -233,7 +233,7 @@ static int fork_and_exec_process(const char *child, char **argv, int fd) {
 
 static int do_accept(const char *name, char **argv, int fd) {
         _cleanup_free_ char *local = NULL, *peer = NULL;
-        _cleanup_close_ int fd_accepted = -1;
+        _cleanup_close_ int fd_accepted = -EBADF;
 
         fd_accepted = accept4(fd, NULL, NULL, 0);
         if (fd_accepted < 0) {
@@ -434,7 +434,7 @@ static int parse_argv(int argc, char *argv[]) {
 
 int main(int argc, char **argv) {
         int r, n;
-        int epoll_fd = -1;
+        int epoll_fd = -EBADF;
 
         log_show_color(true);
         log_parse_environment();