Move various files that don't need to be in basic/ to shared/

This doesn't have much effect on the final build, because we link libbasic.a
into libsystemd-shared.so, so in the end, all the object built from basic/
end up in libsystemd-shared. And when the static library is linked into binaries,
any objects that are included in it but are not used are trimmed. Hence, the
size of output artifacts doesn't change:

$ du -sb /var/tmp/inst*
54181861	/var/tmp/inst1    (old)
54207441	/var/tmp/inst1s   (old split-usr)
54182477	/var/tmp/inst2    (new)
54208041	/var/tmp/inst2s   (new split-usr)

(The negligible change in size is because libsystemd-shared.so is bigger
by a few hundred bytes. I guess it's because symbols are named differently
or something like that.)

The effect is on the build process, in particular partial builds. This change
effectively moves the requirements on some build steps toward the leaves of the
dependency tree. Two effects:
- when building items that do not depend on libsystemd-shared, we
  build less stuff for libbasic.a (which wouldn't be used anyway,
  so it's a net win).
- when building items that do depend on libshared, we reduce libbasic.a as a
  synchronization point, possibly allowing better parallelism.

Method:
1. copy list of .h files from src/basic/meson.build to /tmp/basic
2. $ for i in $(grep '.h$' /tmp/basic); do echo $i; git --no-pager grep "include \"$i\"" src/basic/ 'src/lib*' 'src/nss-*' 'src/journal/sd-journal.c' |grep -v "${i%.h}.c";echo ;done | less

1 files changed, 0 insertions, 280 deletions

diff --git a/src/basic/exit-status.c b/src/basic/exit-status.c
deleted file mode 100644
index 21af8c4c71..0000000000
--- a/src/basic/exit-status.c
+++ /dev/null
@@ -1,280 +0,0 @@
-/* SPDX-License-Identifier: LGPL-2.1+ */
-
-#include <signal.h>
-#include <stdlib.h>
-#include <sysexits.h>
-
-#include "exit-status.h"
-#include "macro.h"
-#include "set.h"
-
-const char* exit_status_to_string(int status, ExitStatusLevel level) {
-
-        /* Exit status ranges:
-         *
-         *   0…1   │ ISO C, EXIT_SUCCESS + EXIT_FAILURE
-         *   2…7   │ LSB exit codes for init scripts
-         *   8…63  │ (Currently unmapped)
-         *  64…78  │ BSD defined exit codes
-         *  79…199 │ (Currently unmapped)
-         * 200…241 │ systemd's private error codes (might be extended to 254 in future development)
-         * 242…254 │ (Currently unmapped, but see above)
-         *   255   │ (We should probably stay away from that one, it's frequently used by applications to indicate an
-         *         │ exit reason that cannot really be expressed in a single exit status value — such as a propagated
-         *         │ signal or such)
-         */
-
-        switch (status) {  /* We always cover the ISO C ones */
-
-        case EXIT_SUCCESS:
-                return "SUCCESS";
-
-        case EXIT_FAILURE:
-                return "FAILURE";
-        }
-
-        if (IN_SET(level, EXIT_STATUS_SYSTEMD, EXIT_STATUS_LSB, EXIT_STATUS_FULL)) {
-                switch (status) { /* Optionally we cover our own ones */
-
-                case EXIT_CHDIR:
-                        return "CHDIR";
-
-                case EXIT_NICE:
-                        return "NICE";
-
-                case EXIT_FDS:
-                        return "FDS";
-
-                case EXIT_EXEC:
-                        return "EXEC";
-
-                case EXIT_MEMORY:
-                        return "MEMORY";
-
-                case EXIT_LIMITS:
-                        return "LIMITS";
-
-                case EXIT_OOM_ADJUST:
-                        return "OOM_ADJUST";
-
-                case EXIT_SIGNAL_MASK:
-                        return "SIGNAL_MASK";
-
-                case EXIT_STDIN:
-                        return "STDIN";
-
-                case EXIT_STDOUT:
-                        return "STDOUT";
-
-                case EXIT_CHROOT:
-                        return "CHROOT";
-
-                case EXIT_IOPRIO:
-                        return "IOPRIO";
-
-                case EXIT_TIMERSLACK:
-                        return "TIMERSLACK";
-
-                case EXIT_SECUREBITS:
-                        return "SECUREBITS";
-
-                case EXIT_SETSCHEDULER:
-                        return "SETSCHEDULER";
-
-                case EXIT_CPUAFFINITY:
-                        return "CPUAFFINITY";
-
-                case EXIT_GROUP:
-                        return "GROUP";
-
-                case EXIT_USER:
-                        return "USER";
-
-                case EXIT_CAPABILITIES:
-                        return "CAPABILITIES";
-
-                case EXIT_CGROUP:
-                        return "CGROUP";
-
-                case EXIT_SETSID:
-                        return "SETSID";
-
-                case EXIT_CONFIRM:
-                        return "CONFIRM";
-
-                case EXIT_STDERR:
-                        return "STDERR";
-
-                case EXIT_PAM:
-                        return "PAM";
-
-                case EXIT_NETWORK:
-                        return "NETWORK";
-
-                case EXIT_NAMESPACE:
-                        return "NAMESPACE";
-
-                case EXIT_NO_NEW_PRIVILEGES:
-                        return "NO_NEW_PRIVILEGES";
-
-                case EXIT_SECCOMP:
-                        return "SECCOMP";
-
-                case EXIT_SELINUX_CONTEXT:
-                        return "SELINUX_CONTEXT";
-
-                case EXIT_PERSONALITY:
-                        return "PERSONALITY";
-
-                case EXIT_APPARMOR_PROFILE:
-                        return "APPARMOR";
-
-                case EXIT_ADDRESS_FAMILIES:
-                        return "ADDRESS_FAMILIES";
-
-                case EXIT_RUNTIME_DIRECTORY:
-                        return "RUNTIME_DIRECTORY";
-
-                case EXIT_CHOWN:
-                        return "CHOWN";
-
-                case EXIT_SMACK_PROCESS_LABEL:
-                        return "SMACK_PROCESS_LABEL";
-
-                case EXIT_KEYRING:
-                        return "KEYRING";
-
-                case EXIT_STATE_DIRECTORY:
-                        return "STATE_DIRECTORY";
-
-                case EXIT_CACHE_DIRECTORY:
-                        return "CACHE_DIRECTORY";
-
-                case EXIT_LOGS_DIRECTORY:
-                        return "LOGS_DIRECTORY";
-
-                case EXIT_CONFIGURATION_DIRECTORY:
-                        return "CONFIGURATION_DIRECTORY";
-                }
-        }
-
-        if (IN_SET(level, EXIT_STATUS_LSB, EXIT_STATUS_FULL)) {
-                switch (status) { /* Optionally we support LSB ones */
-
-                case EXIT_INVALIDARGUMENT:
-                        return "INVALIDARGUMENT";
-
-                case EXIT_NOTIMPLEMENTED:
-                        return "NOTIMPLEMENTED";
-
-                case EXIT_NOPERMISSION:
-                        return "NOPERMISSION";
-
-                case EXIT_NOTINSTALLED:
-                        return "NOTINSTALLED";
-
-                case EXIT_NOTCONFIGURED:
-                        return "NOTCONFIGURED";
-
-                case EXIT_NOTRUNNING:
-                        return "NOTRUNNING";
-                }
-        }
-
-        if (level == EXIT_STATUS_FULL) {
-                switch (status) { /* Optionally, we support BSD exit statusses */
-
-                case EX_USAGE:
-                        return "USAGE";
-
-                case EX_DATAERR:
-                        return "DATAERR";
-
-                case EX_NOINPUT:
-                        return "NOINPUT";
-
-                case EX_NOUSER:
-                        return "NOUSER";
-
-                case EX_NOHOST:
-                        return "NOHOST";
-
-                case EX_UNAVAILABLE:
-                        return "UNAVAILABLE";
-
-                case EX_SOFTWARE:
-                        return "SOFTWARE";
-
-                case EX_OSERR:
-                        return "OSERR";
-
-                case EX_OSFILE:
-                        return "OSFILE";
-
-                case EX_CANTCREAT:
-                        return "CANTCREAT";
-
-                case EX_IOERR:
-                        return "IOERR";
-
-                case EX_TEMPFAIL:
-                        return "TEMPFAIL";
-
-                case EX_PROTOCOL:
-                        return "PROTOCOL";
-
-                case EX_NOPERM:
-                        return "NOPERM";
-
-                case EX_CONFIG:
-                        return "CONFIG";
-                }
-        }
-
-        return NULL;
-}
-
-bool is_clean_exit(int code, int status, ExitClean clean, ExitStatusSet *success_status) {
-
-        if (code == CLD_EXITED)
-                return status == 0 ||
-                       (success_status &&
-                        set_contains(success_status->status, INT_TO_PTR(status)));
-
-        /* If a daemon does not implement handlers for some of the signals that's not considered an unclean shutdown */
-        if (code == CLD_KILLED)
-                return
-                        (clean == EXIT_CLEAN_DAEMON && IN_SET(status, SIGHUP, SIGINT, SIGTERM, SIGPIPE)) ||
-                        (success_status &&
-                         set_contains(success_status->signal, INT_TO_PTR(status)));
-
-        return false;
-}
-
-void exit_status_set_free(ExitStatusSet *x) {
-        assert(x);
-
-        x->status = set_free(x->status);
-        x->signal = set_free(x->signal);
-}
-
-bool exit_status_set_is_empty(ExitStatusSet *x) {
-        if (!x)
-                return true;
-
-        return set_isempty(x->status) && set_isempty(x->signal);
-}
-
-bool exit_status_set_test(ExitStatusSet *x, int code, int status) {
-
-        if (exit_status_set_is_empty(x))
-                return false;
-
-        if (code == CLD_EXITED && set_contains(x->status, INT_TO_PTR(status)))
-                return true;
-
-        if (IN_SET(code, CLD_KILLED, CLD_DUMPED) && set_contains(x->signal, INT_TO_PTR(status)))
-                return true;
-
-        return false;
-}