Don't pre-allocate argument vector for command lines

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

5 files changed, 7 insertions, 61 deletions

diff --git a/lib/include/service.h b/lib/include/service.h
index 471ccbb..595c60e 100644
--- a/lib/include/service.h
+++ b/lib/include/service.h
@@ -46,8 +46,8 @@ enum {
 
 typedef struct exec_t {
 	struct exec_t *next;
-	char **argv;		/* NULL terminated argument vector */
-	char buffer[];		/* backing store for argv */
+	int argc;		/* number of elements in argument vector */
+	char args[];		/* argument vectot string blob */
 } exec_t;
 
 typedef struct service_t {
diff --git a/lib/include/util.h b/lib/include/util.h
index d824b22..d6b68f1 100644
--- a/lib/include/util.h
+++ b/lib/include/util.h
@@ -113,18 +113,6 @@ int unescape(char *src);
 int pack_argv(char *str);
 
 /*
-	Split a space seperated string into a sequence of null-terminated
-	strings. Return a NULL terminated array of strings pointing to the
-	start of each sub string.
-
-	It basically runs pack_argv on 'str' and then constructs the argv
-	vector from that, with each entry pointing into 'str'.
-
-	The returned array must be freed with free().
-*/
-char **split_argv(char *str);
-
-/*
 	Search through an array of enum_map_t entries to resolve a string to
 	a numeric value. The end of the map is indicated by a sentinel entry
 	with the name set to NULL.
diff --git a/lib/src/delsvc.c b/lib/src/delsvc.c
index f4f9c76..fd10cfe 100644
--- a/lib/src/delsvc.c
+++ b/lib/src/delsvc.c
@@ -30,7 +30,6 @@ void delsvc(service_t *svc)
 		e = svc->exec;
 		svc->exec = e->next;
 
-		free(e->argv);
 		free(e);
 	}
 
diff --git a/lib/src/rdsvc.c b/lib/src/rdsvc.c
index c8ba590..1a8cf7e 100644
--- a/lib/src/rdsvc.c
+++ b/lib/src/rdsvc.c
@@ -38,26 +38,6 @@ static int try_unescape(char *arg, rdline_t *rd)
 	return 0;
 }
 
-static char **try_split_argv(char *str, rdline_t *rd)
-{
-	char **argv = split_argv(str);
-
-	if (argv == NULL) {
-		switch (errno) {
-		case EINVAL:
-			fprintf(stderr, "%s: %zu: malformed string constant\n",
-				rd->filename, rd->lineno);
-			break;
-		default:
-			fprintf(stderr, "%s: %zu: %s\n",
-				rd->filename, rd->lineno, strerror(errno));
-			break;
-		}
-	}
-
-	return argv;
-}
-
 static char *try_strdup(const char *str, rdline_t *rd)
 {
 	char *out = strdup(str);
@@ -96,11 +76,12 @@ static int svc_exec(service_t *svc, char *arg, rdline_t *rd)
 		return -1;
 	}
 
-	strcpy(e->buffer, arg);
+	strcpy(e->args, arg);
 
-	e->argv = try_split_argv(e->buffer, rd);
-	if (e->argv == NULL) {
-		free(e);
+	e->argc = pack_argv(e->args);
+	if (e->argc < 0) {
+		fprintf(stderr, "%s: %zu: malformed string constant\n",
+				rd->filename, rd->lineno);
 		return -1;
 	}
 
diff --git a/lib/src/split_argv.c b/lib/src/split_argv.c
index b95720d..5930e2d 100644
--- a/lib/src/split_argv.c
+++ b/lib/src/split_argv.c
@@ -80,25 +80,3 @@ fail_str:
 	errno = EINVAL;
 	return -1;
 }
-
-char **split_argv(char *str)
-{
-	char **argv = NULL;
-	int i, count;
-
-	count = pack_argv(str);
-	if (count <= 0)
-		return NULL;
-
-	argv = malloc(sizeof(argv[0]) * (count + 1));
-	if (argv == NULL)
-		return NULL;
-
-	for (i = 0; i < count; ++i) {
-		argv[i] = str;
-		str += strlen(str) + 1;
-	}
-
-	argv[i] = NULL;
-	return argv;
-}