Const fixing

Fixing some const warnings - with API change in:

int vg_extend(struct volume_group *vg, int pv_count, const char *const *pv_names,

Change is needed - as lvm2api expects const behaviour here.
So vg_extend() is doing local strdup for unescaping.

skip_dev_dir return const char* from const char* vg_name.

Rest of the patch is cleanup of related warnings.

Also using dm_report_filed_string() API change to simplify
casting in _string_disp and _lvname_disp.

11 files changed, 18 insertions, 18 deletions

diff --git a/tools/lvcreate.c b/tools/lvcreate.c
index 70164171..d1abdf7b 100644
--- a/tools/lvcreate.c
+++ b/tools/lvcreate.c
@@ -31,7 +31,7 @@ static int _lvcreate_name_params(struct lvcreate_params *lp,
 {
 	int argc = *pargc;
 	char **argv = *pargv, *ptr;
-	char *vg_name;
+	const char *vg_name;
 
 	lp->lv_name = arg_str_value(cmd, name_ARG, NULL);
 
diff --git a/tools/reporter.c b/tools/reporter.c
index fbd0c274..ebe85e7f 100644
--- a/tools/reporter.c
+++ b/tools/reporter.c
@@ -61,7 +61,7 @@ static int _pvsegs_sub_single(struct cmd_context *cmd,
 
 	struct volume_group _free_vg = {
 		.cmd = cmd,
-		.name = (char *)"",
+		.name = "",
 	};
 
         if (!(_free_vg.vgmem = dm_pool_create("_free_vg", 10240)))
@@ -69,7 +69,7 @@ static int _pvsegs_sub_single(struct cmd_context *cmd,
 
 	struct logical_volume _free_logical_volume = {
 		.vg = vg ?: &_free_vg,
-		.name = (char *) "",
+		.name = "",
 		.snapshot = NULL,
 		.status = VISIBLE_LV,
 		.major = -1,
diff --git a/tools/toollib.c b/tools/toollib.c
index c85b7f0a..5467a3b7 100644
--- a/tools/toollib.c
+++ b/tools/toollib.c
@@ -28,7 +28,7 @@ const char *command_name(struct cmd_context *cmd)
 /*
  * Strip dev_dir if present
  */
-char *skip_dev_dir(struct cmd_context *cmd, const char *vg_name,
+const char *skip_dev_dir(struct cmd_context *cmd, const char *vg_name,
 		   unsigned *dev_dir_found)
 {
 	const char *dmdir = dm_dir();
@@ -54,7 +54,7 @@ char *skip_dev_dir(struct cmd_context *cmd, const char *vg_name,
 		    *layer) {
 			log_error("skip_dev_dir: Couldn't split up device name %s",
 				  vg_name);
-			return (char *) vg_name;
+			return vg_name;
 		}
 		vglv_sz = strlen(vgname) + strlen(lvname) + 2;
 		if (!(vglv = dm_pool_alloc(cmd->mem, vglv_sz)) ||
@@ -62,7 +62,7 @@ char *skip_dev_dir(struct cmd_context *cmd, const char *vg_name,
 				 *lvname ? "/" : "",
 				 lvname) < 0) {
 			log_error("vg/lv string alloc failed");
-			return (char *) vg_name;
+			return vg_name;
 		}
 		return vglv;
 	}
@@ -76,7 +76,7 @@ char *skip_dev_dir(struct cmd_context *cmd, const char *vg_name,
 	} else if (dev_dir_found)
 		*dev_dir_found = 0;
 
-	return (char *) vg_name;
+	return vg_name;
 }
 
 /*
@@ -898,7 +898,7 @@ const char *extract_vgname(struct cmd_context *cmd, const char *lv_name)
  */
 char *default_vgname(struct cmd_context *cmd)
 {
-	char *vg_path;
+	const char *vg_path;
 
 	/* Take default VG from environment? */
 	vg_path = getenv("LVM_VG_NAME");
diff --git a/tools/toollib.h b/tools/toollib.h
index 506945a0..1ef83f68 100644
--- a/tools/toollib.h
+++ b/tools/toollib.h
@@ -84,8 +84,8 @@ int process_each_lv_in_vg(struct cmd_context *cmd,
 
 char *default_vgname(struct cmd_context *cmd);
 const char *extract_vgname(struct cmd_context *cmd, const char *lv_name);
-char *skip_dev_dir(struct cmd_context *cmd, const char *vg_name,
-		   unsigned *dev_dir_found);
+const char *skip_dev_dir(struct cmd_context *cmd, const char *vg_name,
+			 unsigned *dev_dir_found);
 
 /*
  * Builds a list of pv's from the names in argv.  Used in
diff --git a/tools/vgcfgrestore.c b/tools/vgcfgrestore.c
index dc0158f8..1f1ab521 100644
--- a/tools/vgcfgrestore.c
+++ b/tools/vgcfgrestore.c
@@ -17,7 +17,7 @@
 
 int vgcfgrestore(struct cmd_context *cmd, int argc, char **argv)
 {
-	char *vg_name = NULL;
+	const char *vg_name = NULL;
 
 	if (argc == 1) {
 		vg_name = skip_dev_dir(cmd, argv[0], NULL);
diff --git a/tools/vgcreate.c b/tools/vgcreate.c
index 49574f33..62b5ac7b 100644
--- a/tools/vgcreate.c
+++ b/tools/vgcreate.c
@@ -74,7 +74,7 @@ int vgcreate(struct cmd_context *cmd, int argc, char **argv)
 	}
 
 	/* attach the pv's */
-	if (!vg_extend(vg, argc, argv, &pp))
+	if (!vg_extend(vg, argc, (const char* const*)argv, &pp))
 		goto_bad;
 
 	if (vp_new.max_lv != vg->max_lv)
diff --git a/tools/vgextend.c b/tools/vgextend.c
index a0c166b0..5d2b54d7 100644
--- a/tools/vgextend.c
+++ b/tools/vgextend.c
@@ -40,7 +40,7 @@ static int _restore_pv(struct volume_group *vg, char *pv_name)
 
 int vgextend(struct cmd_context *cmd, int argc, char **argv)
 {
-	char *vg_name;
+	const char *vg_name;
 	struct volume_group *vg = NULL;
 	int r = ECMD_FAILED;
 	struct pvcreate_params pp;
@@ -107,7 +107,7 @@ int vgextend(struct cmd_context *cmd, int argc, char **argv)
 		}
 
 		/* extend vg */
-		if (!vg_extend(vg, argc, argv, &pp))
+		if (!vg_extend(vg, argc, (const char* const*)argv, &pp))
 			goto_bad;
 
 		if (arg_count(cmd, metadataignore_ARG) &&
diff --git a/tools/vgmerge.c b/tools/vgmerge.c
index 391764f9..adb00a0f 100644
--- a/tools/vgmerge.c
+++ b/tools/vgmerge.c
@@ -163,7 +163,7 @@ bad:
 
 int vgmerge(struct cmd_context *cmd, int argc, char **argv)
 {
-	char *vg_name_to, *vg_name_from;
+	const char *vg_name_to, *vg_name_from;
 	int opt = 0;
 	int ret = 0, ret_max = 0;
 
diff --git a/tools/vgreduce.c b/tools/vgreduce.c
index 4aa8f01e..5e61cf83 100644
--- a/tools/vgreduce.c
+++ b/tools/vgreduce.c
@@ -457,7 +457,7 @@ bad:
 int vgreduce(struct cmd_context *cmd, int argc, char **argv)
 {
 	struct volume_group *vg;
-	char *vg_name;
+	const char *vg_name;
 	int ret = ECMD_FAILED;
 	int fixed = 1;
 	int repairing = arg_count(cmd, removemissing_ARG);
diff --git a/tools/vgrename.c b/tools/vgrename.c
index 7a4e730e..2f83fc63 100644
--- a/tools/vgrename.c
+++ b/tools/vgrename.c
@@ -63,7 +63,7 @@ static int vg_rename_path(struct cmd_context *cmd, const char *old_vg_path,
 	int found_id = 0;
 	struct dm_list *vgids;
 	struct str_list *sl;
-	char *vg_name_new;
+	const char *vg_name_new;
 	const char *vgid = NULL, *vg_name, *vg_name_old;
 	char old_path[NAME_LEN], new_path[NAME_LEN];
 	struct volume_group *vg = NULL;
diff --git a/tools/vgsplit.c b/tools/vgsplit.c
index bd2f0ab3..b97db97b 100644
--- a/tools/vgsplit.c
+++ b/tools/vgsplit.c
@@ -281,7 +281,7 @@ int vgsplit(struct cmd_context *cmd, int argc, char **argv)
 {
 	struct vgcreate_params vp_new;
 	struct vgcreate_params vp_def;
-	char *vg_name_from, *vg_name_to;
+	const char *vg_name_from, *vg_name_to;
 	struct volume_group *vg_to = NULL, *vg_from = NULL;
 	int opt;
 	int existing_vg = 0;