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Diffstat (limited to '')
| -rw-r--r-- | src/shared/exit-status.c | 284 |
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; +} |