Add param_set/get_charp/bool/invboll

* libdde_linux26/lib/src/arch/l4/param.c (param_set_charp, param_get_charp,
param_set_bool, param_get_bool, param_set_invbool, param_get_invbool): New
functions.

1 files changed, 63 insertions, 0 deletions

diff --git a/libdde_linux26/lib/src/arch/l4/param.c b/libdde_linux26/lib/src/arch/l4/param.c
index 5bd83f32..c459428a 100644
--- a/libdde_linux26/lib/src/arch/l4/param.c
+++ b/libdde_linux26/lib/src/arch/l4/param.c
@@ -26,6 +26,69 @@ STANDARD_PARAM_DEF(uint, unsigned int, "%u", unsigned long, simple_strtoul);
 STANDARD_PARAM_DEF(long, long, "%li", long, simple_strtol);
 STANDARD_PARAM_DEF(ulong, unsigned long, "%lu", unsigned long, simple_strtoul);
 
+int param_set_charp(const char *val, struct kernel_param *kp)
+{
+	if (!val) {
+		printk(KERN_ERR "%s: string parameter expected\n",
+		       kp->name);
+		return -EINVAL;
+	}
+
+	if (strlen(val) > 1024) {
+		printk(KERN_ERR "%s: string parameter too long\n",
+		       kp->name);
+		return -ENOSPC;
+	}
+
+	*(char **)kp->arg = (char *)val;
+	return 0;
+}
+
+int param_get_charp(char *buffer, struct kernel_param *kp)
+{
+	return sprintf(buffer, "%s", *((char **)kp->arg));
+}
+
+int param_set_bool(const char *val, struct kernel_param *kp)
+{
+	/* No equals means "set"... */
+	if (!val) val = "1";
+
+	/* One of =[yYnN01] */
+	switch (val[0]) {
+	case 'y': case 'Y': case '1':
+		*(int *)kp->arg = 1;
+		return 0;
+	case 'n': case 'N': case '0':
+		*(int *)kp->arg = 0;
+		return 0;
+	}
+	return -EINVAL;
+}
+
+int param_get_bool(char *buffer, struct kernel_param *kp)
+{
+	/* Y and N chosen as being relatively non-coder friendly */
+	return sprintf(buffer, "%c", (*(int *)kp->arg) ? 'Y' : 'N');
+}
+
+int param_set_invbool(const char *val, struct kernel_param *kp)
+{
+	int boolval, ret;
+	struct kernel_param dummy;
+
+	dummy.arg = &boolval;
+	ret = param_set_bool(val, &dummy);
+	if (ret == 0)
+		*(int *)kp->arg = !boolval;
+	return ret;
+}
+
+int param_get_invbool(char *buffer, struct kernel_param *kp)
+{
+	return sprintf(buffer, "%c", (*(int *)kp->arg) ? 'N' : 'Y');
+}
+
 int printk_ratelimit(void)
 {
 	return 0;