Add flags to selectively skip fields in service files

Signed-off-by: David Oberhollenzer <david.oberhollenzer@tele2.at>

2 files changed, 31 insertions, 18 deletions

diff --git a/lib/src/rdsvc.c b/lib/src/rdsvc.c
index ef3465f..546962d 100644
--- a/lib/src/rdsvc.c
+++ b/lib/src/rdsvc.c
@@ -204,15 +204,17 @@ static const struct svc_param {
 
 	unsigned int allow_block : 1;
 
+	int flags;
+
 	int (*handle)(service_t *svc, char *arg, rdline_t *rd);
 } svc_params[] = {
-	{ "description", 0, svc_desc },
-	{ "exec", 1, svc_exec },
-	{ "type", 0, svc_type },
-	{ "target", 0, svc_target },
-	{ "tty", 0, svc_tty },
-	{ "before", 0, svc_before },
-	{ "after", 0, svc_after },
+	{ "description", 0, 0, svc_desc },
+	{ "exec", 1, RDSVC_NO_EXEC, svc_exec },
+	{ "type", 0, 0, svc_type },
+	{ "target", 0, 0, svc_target },
+	{ "tty", 0, RDSVC_NO_CTTY, svc_tty },
+	{ "before", 0, RDSVC_NO_DEPS, svc_before },
+	{ "after", 0, RDSVC_NO_DEPS, svc_after },
 };
 
 static int splitkv(rdline_t *rd, char **k, char **v)
@@ -257,7 +259,7 @@ static const struct svc_param *find_param(rdline_t *rd, const char *name)
 }
 
 
-service_t *rdsvc(int dirfd, const char *filename)
+service_t *rdsvc(int dirfd, const char *filename, int flags)
 {
 	const struct svc_param *p;
 	const char *arg, *args[1];
@@ -289,9 +291,11 @@ service_t *rdsvc(int dirfd, const char *filename)
 	if (svc == NULL)
 		goto fail_oom;
 
-	svc->fname = strdup(filename);
-	if (svc->fname == NULL)
-		goto fail_oom;
+	if (!(flags & RDSVC_NO_FNAME)) {
+		svc->fname = strdup(filename);
+		if (svc->fname == NULL)
+			goto fail_oom;
+	}
 
 	memcpy(svc->name, filename, nlen);
 
@@ -306,13 +310,19 @@ service_t *rdsvc(int dirfd, const char *filename)
 		if (p->allow_block && *value == '{') {
 			for (++value; *value == ' '; ++value)
 				;
-			if (*value != '\0' && p->handle(svc, value, &rd))
-				goto fail;
+
+			if (!(flags & p->flags)) {
+				if (*value != '\0' &&
+				    p->handle(svc, value, &rd)) {
+					goto fail;
+				}
+			}
 
 			while ((ret = rdline(&rd)) == 0) {
 				if (strcmp(rd.buffer, "}") == 0)
 					break;
-
+				if (flags & p->flags)
+					continue;
 				if (p->handle(svc, rd.buffer, &rd))
 					goto fail;
 			}
@@ -321,8 +331,11 @@ service_t *rdsvc(int dirfd, const char *filename)
 				goto fail;
 			if (ret > 0)
 				goto fail_bra;
-		} else if (p->handle(svc, value, &rd)) {
-			goto fail;
+		} else {
+			if (flags & p->flags)
+				continue;
+			if (p->handle(svc, value, &rd))
+				goto fail;
 		}
 	}
 
diff --git a/lib/src/svcscan.c b/lib/src/svcscan.c
index 32c1dee..f4c7ef1 100644
--- a/lib/src/svcscan.c
+++ b/lib/src/svcscan.c
@@ -27,7 +27,7 @@
 
 #include "service.h"
 
-int svcscan(const char *directory, service_list_t *list)
+int svcscan(const char *directory, service_list_t *list, int flags)
 {
 	int i, dfd, type, ret = 0;
 	struct dirent *ent;
@@ -82,7 +82,7 @@ int svcscan(const char *directory, service_list_t *list)
 		if (type != S_IFREG && type != S_IFLNK)
 			continue;
 
-		svc = rdsvc(dfd, ent->d_name);
+		svc = rdsvc(dfd, ent->d_name, flags);
 		if (svc == NULL) {
 			ret = -1;
 			continue;