Default to .config for user services directory

The /etc directory is a directory for system configuration files.
The .config directory in most Linux systems nowadays mirrors this.

Explicitly do not follow XDG_CONFIG_HOME as that is of questionable
value and the XDG base directory spec is overly complicated and
has various quirky parts. However, IME most users appreciate having
config files in a separate location and .config is where a lot of
software stores these nowadays.

doc/manpages/dinit-service.5.m4

@@ -6,7 +6,7 @@ Dinit service description files
 .SH SYNOPSIS
 .\"
 .ft CR
-/etc/dinit.d/\fIservice-name\fR, $HOME/dinit.d/\fIservice-name\fR
+/etc/dinit.d/\fIservice-name\fR, $HOME/.config/dinit.d/\fIservice-name\fR
 .ft
 .\"
 .SH DESCRIPTION
@@ -19,7 +19,7 @@ service description file is named after the service it represents, and is
 a plain-text file with simple key-value format. The description files are
 located in a service description directory; by default, the system process
 searches \fI/etc/dinit.d\fR, \fI/usr/local/lib/dinit.d\fR and
-\fI/lib/dinit.d\fR, while a user process searches \fI$HOME/dinit.d\fR.
+\fI/lib/dinit.d\fR, while a user process searches \fI$HOME/.config/dinit.d\fR.
 .LP
 All services have a \fItype\fR and a set of \fIdependencies\fR. These are discussed
 in the following subsections. The type, dependencies, and other attributes are

doc/manpages/dinit.8.m4

@@ -32,7 +32,7 @@ certain signals). This is currently fully supported only on Linux. See
 Dinit reads service descriptions from files located in a service
 description directory, normally one of \fI/etc/dinit.d\fR,
 \fI/usr/local/lib/dinit.d\fR or \fI/lib/dinit.d\fR for the system instance
-or just \fI$HOME/dinit.d\fR when run as a user process. See \fBSERVICE
+or just \fI$HOME/.config/dinit.d\fR when run as a user process. See \fBSERVICE
 DESCRIPTION FILES\fR for details of the service description format.
 .\"
 .SH OPTIONS
@@ -42,7 +42,7 @@ Specifies \fIdir\fP as the directory containing service definition files, can
 be set multiple times. Default directories are not searched for services when
 this option is provided.
 
-If not specified, the default is \fI$HOME/dinit.d\fR or, for the
+If not specified, the default is \fI$HOME/.config/dinit.d\fR or, for the
 system service manager, each of \fI/etc/dinit.d\fR, \fI/usr/local/lib/dinit.d\fR,
 and \fI/lib/dinit.d\fR (searched in that order).
 .TP
@@ -111,7 +111,7 @@ subsequent service names.
 .\"
 Service description files specify the parameters of each service. They are
 named for the service they describe, and are found in \fI/etc/dinit.d\fR
-for a system instance or \fI$HOME/dinit.d\fR for a user instance.
+for a system instance or \fI$HOME/.config/dinit.d\fR for a user instance.
 
 Service description files are read by Dinit on an "as needed" basis. Once a
 service description has been read the configuration can be altered in limited

doc/manpages/dinitcheck.8.m4

@@ -35,7 +35,7 @@ Specifies \fIdir\fP as the directory containing service definition files, can
 be set multiple times. Default directories are not searched for services when
 this option is provided.
 
-If not specified, the default is \fI$HOME/dinit.d\fR or, for the
+If not specified, the default is \fI$HOME/.config/dinit.d\fR or, for the
 system service manager, each of \fI/etc/dinit.d/fR, \fI/usr/local/lib/dinit.d\fR,
 and \fI/lib/dinit.d\fR (searched in that order).
 .TP

src/options-processing.cc

@@ -35,11 +35,11 @@ void service_dir_opt::build_paths(bool am_system_init)
             const char * user_home = get_user_home();
             if (user_home != nullptr) {
                 size_t user_home_len = strlen(user_home);
-                size_t dinit_d_len = strlen("/dinit.d");
+                size_t dinit_d_len = strlen("/.config/dinit.d");
                 size_t full_len = user_home_len + dinit_d_len + 1;
                 char *service_dir_w = new char[full_len];
                 std::memcpy(service_dir_w, user_home, user_home_len);
-                std::memcpy(service_dir_w + user_home_len, "/dinit.d", dinit_d_len);
+                std::memcpy(service_dir_w + user_home_len, "/.config/dinit.d", dinit_d_len);
                 service_dir_w[full_len - 1] = 0;
 
                 service_dir_paths.emplace_back(service_dir_w, /*dyn_allocd=*/true);