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-rw-r--r--src/shared/exit-status.c284
1 files changed, 284 insertions, 0 deletions
diff --git a/src/shared/exit-status.c b/src/shared/exit-status.c
new file mode 100644
index 0000000..26b3060
--- /dev/null
+++ b/src/shared/exit-status.c
@@ -0,0 +1,284 @@
+/* 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 │ EXIT_EXCEPTION (We use this to propagate exit-by-signal events. It's frequently used by others apps (like bash)
+ * │ to indicate exit reason that cannot really be expressed in a single exit status value — such as a propagated
+ * │ signal or such, and we follow that logic here.)
+ */
+
+ 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";
+
+ case EXIT_EXCEPTION:
+ return "EXCEPTION";
+ }
+ }
+
+ 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;
+}