add generic string lookup macros

2 files changed, 129 insertions, 20 deletions

diff --git a/util.c b/util.c
index 19375aebca..3ce506b0c6 100644
--- a/util.c
+++ b/util.c
@@ -7,9 +7,14 @@
 #include <stdlib.h>
 #include <signal.h>
 #include <stdio.h>
+#include <syslog.h>
+#include <sched.h>
+#include <sys/resource.h>
 
 #include "macro.h"
 #include "util.h"
+#include "ioprio.h"
+#include "missing.h"
 
 usec_t now(clockid_t clock) {
         struct timespec ts;
@@ -277,24 +282,6 @@ char *split_quoted(const char *c, size_t *l, char **state) {
         return (char*) current;
 }
 
-const char *sigchld_code(int code) {
-
-        if (code == CLD_EXITED)
-                return "exited";
-        else if (code == CLD_KILLED)
-                return "killed";
-        else if (code == CLD_DUMPED)
-                return "dumped";
-        else if (code == CLD_TRAPPED)
-                return "trapped";
-        else if (code == CLD_STOPPED)
-                return "stopped";
-        else if (code == CLD_CONTINUED)
-                return "continued";
-
-        return "unknown";
-}
-
 int get_parent_of_pid(pid_t pid, pid_t *_ppid) {
         int r;
         FILE *f;
@@ -876,3 +863,92 @@ char *ascii_strlower(char *path) {
 
         return p;
 }
+
+static const char *const ioprio_class_table[] = {
+        [IOPRIO_CLASS_NONE] = "none",
+        [IOPRIO_CLASS_RT] = "realtime",
+        [IOPRIO_CLASS_BE] = "best-effort",
+        [IOPRIO_CLASS_IDLE] = "idle"
+};
+
+DEFINE_STRING_TABLE_LOOKUP(ioprio_class, int);
+
+static const char *const sigchld_code_table[] = {
+        [CLD_EXITED] = "exited",
+        [CLD_KILLED] = "killed",
+        [CLD_DUMPED] = "dumped",
+        [CLD_TRAPPED] = "trapped",
+        [CLD_STOPPED] = "stopped",
+        [CLD_CONTINUED] = "continued",
+};
+
+DEFINE_STRING_TABLE_LOOKUP(sigchld_code, int);
+
+static const char *const log_facility_table[LOG_NFACILITIES] = {
+        [LOG_FAC(LOG_KERN)] = "kern",
+        [LOG_FAC(LOG_USER)] = "user",
+        [LOG_FAC(LOG_MAIL)] = "mail",
+        [LOG_FAC(LOG_DAEMON)] = "daemon",
+        [LOG_FAC(LOG_AUTH)] = "auth",
+        [LOG_FAC(LOG_SYSLOG)] = "syslog",
+        [LOG_FAC(LOG_LPR)] = "lpr",
+        [LOG_FAC(LOG_NEWS)] = "news",
+        [LOG_FAC(LOG_UUCP)] = "uucp",
+        [LOG_FAC(LOG_CRON)] = "cron",
+        [LOG_FAC(LOG_AUTHPRIV)] = "authpriv",
+        [LOG_FAC(LOG_FTP)] = "ftp",
+        [LOG_FAC(LOG_LOCAL0)] = "local0",
+        [LOG_FAC(LOG_LOCAL1)] = "local1",
+        [LOG_FAC(LOG_LOCAL2)] = "local2",
+        [LOG_FAC(LOG_LOCAL3)] = "local3",
+        [LOG_FAC(LOG_LOCAL4)] = "local4",
+        [LOG_FAC(LOG_LOCAL5)] = "local5",
+        [LOG_FAC(LOG_LOCAL6)] = "local6",
+        [LOG_FAC(LOG_LOCAL7)] = "local7"
+};
+
+DEFINE_STRING_TABLE_LOOKUP(log_facility, int);
+
+static const char *const log_level_table[] = {
+        [LOG_EMERG] = "emerg",
+        [LOG_ALERT] = "alert",
+        [LOG_CRIT] = "crit",
+        [LOG_ERR] = "err",
+        [LOG_WARNING] = "warning",
+        [LOG_NOTICE] = "notice",
+        [LOG_INFO] = "info",
+        [LOG_DEBUG] = "debug"
+};
+
+DEFINE_STRING_TABLE_LOOKUP(log_level, int);
+
+static const char* const sched_policy_table[] = {
+        [SCHED_OTHER] = "other",
+        [SCHED_BATCH] = "batch",
+        [SCHED_IDLE] = "idle",
+        [SCHED_FIFO] = "fifo",
+        [SCHED_RR] = "rr"
+};
+
+DEFINE_STRING_TABLE_LOOKUP(sched_policy, int);
+
+static const char* const rlimit_table[] = {
+        [RLIMIT_CPU] = "LimitCPU",
+        [RLIMIT_FSIZE] = "LimitFSIZE",
+        [RLIMIT_DATA] = "LimitDATA",
+        [RLIMIT_STACK] = "LimitSTACK",
+        [RLIMIT_CORE] = "LimitCORE",
+        [RLIMIT_RSS] = "LimitRSS",
+        [RLIMIT_NOFILE] = "LimitNOFILE",
+        [RLIMIT_AS] = "LimitAS",
+        [RLIMIT_NPROC] = "LimitNPROC",
+        [RLIMIT_MEMLOCK] = "LimitMEMLOCK",
+        [RLIMIT_LOCKS] = "LimitLOCKS",
+        [RLIMIT_SIGPENDING] = "LimitSIGPENDING",
+        [RLIMIT_MSGQUEUE] = "LimitMSGQUEUE",
+        [RLIMIT_NICE] = "LimitNICE",
+        [RLIMIT_RTPRIO] = "LimitRTPRIO",
+        [RLIMIT_RTTIME] = "LimitRTTIME"
+};
+
+DEFINE_STRING_TABLE_LOOKUP(rlimit, int);
diff --git a/util.h b/util.h
index 32da179aee..476b5ae8ab 100644
--- a/util.h
+++ b/util.h
@@ -83,8 +83,6 @@ char *split_quoted(const char *c, size_t *l, char **state);
 #define FOREACH_WORD_QUOTED(word, length, s, state)                     \
         for ((state) = NULL, (word) = split_quoted((s), &(l), &(state)); (word); (word) = split_quoted((s), &(l), &(state)))
 
-const char *sigchld_code(int code);
-
 pid_t get_parent_of_pid(pid_t pid, pid_t *ppid);
 
 int write_one_line_file(const char *fn, const char *line);
@@ -121,4 +119,39 @@ char *ascii_strlower(char *path);
 
 char *xescape(const char *s, const char *bad);
 
+#define DEFINE_STRING_TABLE_LOOKUP(name,type)                           \
+        const char *name##_to_string(type i) {                          \
+                if (i < 0 || i >= (type) ELEMENTSOF(name##_table))      \
+                        return NULL;                                    \
+                return name##_table[i];                                 \
+        }                                                               \
+        type name##_from_string(const char *s) {                        \
+                type i;                                                 \
+                assert(s);                                              \
+                for (i = 0; i < (type)ELEMENTSOF(name##_table); i++)    \
+                        if (streq(name##_table[i], s))                  \
+                                return i;                               \
+                return (type) -1;                                       \
+        }                                                               \
+        struct __useless_struct_to_allow_trailing_semicolon__
+
+
+const char *ioprio_class_to_string(int i);
+int ioprio_class_from_string(const char *s);
+
+const char *sigchld_code_to_string(int i);
+int sigchld_code_from_string(const char *s);
+
+const char *log_facility_to_string(int i);
+int log_facility_from_string(const char *s);
+
+const char *log_level_to_string(int i);
+int log_level_from_string(const char *s);
+
+const char *sched_policy_to_string(int i);
+int sched_policy_from_string(const char *s);
+
+const char *rlimit_to_string(int i);
+int rlimit_from_string(const char *s);
+
 #endif