[PATCH v2 2/8] cmd: ubi: mark read-only function parameters with const

[Weijie Gao]

Parameters like part/volume name and buffer for writing are not being
modified by the callee functions and should be marked const.

Signed-off-by: Weijie Gao <weijie.gao at mediatek.com>
---
v2: new
---
 cmd/ubi.c           | 41 ++++++++++++++++++++++-------------------
 include/ubi_uboot.h |  7 ++++---
 2 files changed, 26 insertions(+), 22 deletions(-)

diff --git a/cmd/ubi.c b/cmd/ubi.c
index 93de6f3aea2..f75ceff11ee 100644
--- a/cmd/ubi.c
+++ b/cmd/ubi.c
@@ -39,7 +39,7 @@ static struct ubi_device *ubi;
 #include <ubifs_uboot.h>
 #endif
 
-static void display_volume_info(struct ubi_device *ubi)
+static void display_volume_info(const struct ubi_device *ubi)
 {
 	int i;
 
@@ -50,7 +50,7 @@ static void display_volume_info(struct ubi_device *ubi)
 	}
 }
 
-static void display_ubi_info(struct ubi_device *ubi)
+static void display_ubi_info(const struct ubi_device *ubi)
 {
 	ubi_msg("MTD device name:            \"%s\"", ubi->mtd->name);
 	ubi_msg("MTD device size:            %llu MiB", ubi->flash_size >> 20);
@@ -149,12 +149,12 @@ static int ubi_list(const char *var, int numeric)
 	return 0;
 }
 
-static int ubi_check_volumename(const struct ubi_volume *vol, char *name)
+static int ubi_check_volumename(const struct ubi_volume *vol, const char *name)
 {
 	return strcmp(vol->name, name);
 }
 
-static int ubi_check(char *name)
+static int ubi_check(const char *name)
 {
 	int i;
 
@@ -213,8 +213,8 @@ bad:
 	return err;
 }
 
-static int ubi_create_vol(char *volume, int64_t size, int dynamic, int vol_id,
-			  bool skipcheck)
+static int ubi_create_vol(const char *volume, int64_t size, int dynamic,
+			  int vol_id, bool skipcheck)
 {
 	struct ubi_mkvol_req req;
 	int err;
@@ -247,7 +247,7 @@ static int ubi_create_vol(char *volume, int64_t size, int dynamic, int vol_id,
 	return ubi_create_volume(ubi, &req);
 }
 
-static struct ubi_volume *ubi_find_volume(char *volume)
+static struct ubi_volume *ubi_find_volume(const char *volume)
 {
 	struct ubi_volume *vol;
 	int i;
@@ -262,7 +262,7 @@ static struct ubi_volume *ubi_find_volume(char *volume)
 	return NULL;
 }
 
-static int ubi_remove_vol(char *volume)
+static int ubi_remove_vol(const char *volume)
 {
 	int err, reserved_pebs, i;
 	struct ubi_volume *vol;
@@ -316,7 +316,7 @@ out_err:
 	return err;
 }
 
-static int ubi_rename_vol(char *oldname, char *newname)
+static int ubi_rename_vol(const char *oldname, const char *newname)
 {
 	struct ubi_volume *vol;
 	struct ubi_rename_entry rename;
@@ -354,7 +354,8 @@ static int ubi_rename_vol(char *oldname, char *newname)
 	return ubi_rename_volumes(ubi, &list);
 }
 
-static int ubi_volume_continue_write(char *volume, void *buf, size_t size)
+static int ubi_volume_continue_write(const char *volume, const void *buf,
+				     size_t size)
 {
 	int err;
 	struct ubi_volume *vol;
@@ -394,8 +395,8 @@ static int ubi_volume_continue_write(char *volume, void *buf, size_t size)
 	return 0;
 }
 
-int ubi_volume_begin_write(char *volume, void *buf, size_t size,
-	size_t full_size)
+int ubi_volume_begin_write(const char *volume, const void *buf, size_t size,
+			   size_t full_size)
 {
 	int err;
 	int rsvd_bytes;
@@ -424,8 +425,8 @@ int ubi_volume_begin_write(char *volume, void *buf, size_t size,
 	return ubi_volume_continue_write(volume, buf, size);
 }
 
-static int ubi_volume_offset_write(char *volume, void *buf, loff_t offset,
-				   size_t size)
+static int ubi_volume_offset_write(const char *volume, const void *buf,
+				   loff_t offset, size_t size)
 {
 	int len, tbuf_size, ret;
 	u64 lnum;
@@ -487,7 +488,8 @@ exit:
 	return ret;
 }
 
-int ubi_volume_write(char *volume, void *buf, loff_t offset, size_t size)
+int ubi_volume_write(const char *volume, const void *buf, loff_t offset,
+		     size_t size)
 {
 	int ret;
 
@@ -503,7 +505,7 @@ int ubi_volume_write(char *volume, void *buf, loff_t offset, size_t size)
 	return ret;
 }
 
-int ubi_volume_read(char *volume, char *buf, loff_t offset, size_t size)
+int ubi_volume_read(const char *volume, char *buf, loff_t offset, size_t size)
 {
 	int err, lnum, off, len, tbuf_size;
 	void *tbuf;
@@ -587,7 +589,8 @@ int ubi_volume_read(char *volume, char *buf, loff_t offset, size_t size)
 	return err;
 }
 
-static int ubi_dev_scan(struct mtd_info *info, const char *vid_header_offset)
+static int ubi_dev_scan(const struct mtd_info *info,
+			const char *vid_header_offset)
 {
 	char ubi_mtd_param_buffer[80];
 	int err;
@@ -611,7 +614,7 @@ static int ubi_dev_scan(struct mtd_info *info, const char *vid_header_offset)
 	return 0;
 }
 
-static int ubi_set_skip_check(char *volume, bool skip_check)
+static int ubi_set_skip_check(const char *volume, bool skip_check)
 {
 	struct ubi_vtbl_record vtbl_rec;
 	struct ubi_volume *vol;
@@ -658,7 +661,7 @@ static int ubi_detach(void)
 	return 0;
 }
 
-int ubi_part(char *part_name, const char *vid_header_offset)
+int ubi_part(const char *part_name, const char *vid_header_offset)
 {
 	struct mtd_info *mtd;
 	int err;
diff --git a/include/ubi_uboot.h b/include/ubi_uboot.h
index 05fb9634d81..a949d1b80dd 100644
--- a/include/ubi_uboot.h
+++ b/include/ubi_uboot.h
@@ -47,9 +47,10 @@
 int ubi_mtd_param_parse(const char *val, struct kernel_param *kp);
 int ubi_init(void);
 void ubi_exit(void);
-int ubi_part(char *part_name, const char *vid_header_offset);
-int ubi_volume_write(char *volume, void *buf, loff_t offset, size_t size);
-int ubi_volume_read(char *volume, char *buf, loff_t offset, size_t size);
+int ubi_part(const char *part_name, const char *vid_header_offset);
+int ubi_volume_write(const char *volume, const void *buf, loff_t offset,
+		     size_t size);
+int ubi_volume_read(const char *volume, char *buf, loff_t offset, size_t size);
 
 extern struct ubi_device *ubi_devices[];
 int cmd_ubifs_mount(char *vol_name);
-- 
2.45.2