image: constify lookup tables

These are pure lookup tables -- no need to be writable.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>

common/image.c

@@ -74,7 +74,7 @@ static const image_header_t* image_get_ramdisk (ulong rd_addr, uint8_t arch,
 #include <image.h>
 #endif /* !USE_HOSTCC*/
 
-static table_entry_t uimage_arch[] = {
+static const table_entry_t uimage_arch[] = {
 	{	IH_ARCH_INVALID,	NULL,		"Invalid ARCH",	},
 	{	IH_ARCH_ALPHA,		"alpha",	"Alpha",	},
 	{	IH_ARCH_ARM,		"arm",		"ARM",		},
@@ -96,7 +96,7 @@ static table_entry_t uimage_arch[] = {
 	{	-1,			"",		"",		},
 };
 
-static table_entry_t uimage_os[] = {
+static const table_entry_t uimage_os[] = {
 	{	IH_OS_INVALID,	NULL,		"Invalid OS",		},
 	{	IH_OS_LINUX,	"linux",	"Linux",		},
 #if defined(CONFIG_LYNXKDI) || defined(USE_HOSTCC)
@@ -129,7 +129,7 @@ static table_entry_t uimage_os[] = {
 	{	-1,		"",		"",			},
 };
 
-static table_entry_t uimage_type[] = {
+static const table_entry_t uimage_type[] = {
 	{	IH_TYPE_INVALID,    NULL,	  "Invalid Image",	},
 	{	IH_TYPE_FILESYSTEM, "filesystem", "Filesystem Image",	},
 	{	IH_TYPE_FIRMWARE,   "firmware",	  "Firmware",		},
@@ -144,7 +144,7 @@ static table_entry_t uimage_type[] = {
 	{	-1,		    "",		  "",			},
 };
 
-static table_entry_t uimage_comp[] = {
+static const table_entry_t uimage_comp[] = {
 	{	IH_COMP_NONE,	"none",		"uncompressed",		},
 	{	IH_COMP_BZIP2,	"bzip2",	"bzip2 compressed",	},
 	{	IH_COMP_GZIP,	"gzip",		"gzip compressed",	},
@@ -516,7 +516,7 @@ static void genimg_print_time (time_t timestamp)
  *     long entry name if translation succeeds
  *     msg otherwise
  */
-char *get_table_entry_name (table_entry_t *table, char *msg, int id)
+char *get_table_entry_name(const table_entry_t *table, char *msg, int id)
 {
 	for (; table->id >= 0; ++table) {
 		if (table->id == id)
@@ -563,10 +563,10 @@ const char *genimg_get_comp_name (uint8_t comp)
  *     entry id if translation succeeds
  *     -1 otherwise
  */
-int get_table_entry_id (table_entry_t *table,
+int get_table_entry_id(const table_entry_t *table,
 		const char *table_name, const char *name)
 {
-	table_entry_t *t;
+	const table_entry_t *t;
 #ifdef USE_HOSTCC
 	int first = 1;
 

include/image.h

@@ -300,14 +300,14 @@ typedef struct table_entry {
  * entry that matches the given short name. If a matching entry is
  * found, it's id is returned to the caller.
  */
-int get_table_entry_id (table_entry_t *table,
+int get_table_entry_id(const table_entry_t *table,
 		const char *table_name, const char *name);
 /*
  * get_table_entry_name() scans the translation table trying to find
  * an entry that matches the given id. If a matching entry is found,
  * its long name is returned to the caller.
  */
-char *get_table_entry_name (table_entry_t *table, char *msg, int id);
+char *get_table_entry_name(const table_entry_t *table, char *msg, int id);
 
 const char *genimg_get_os_name (uint8_t os);
 const char *genimg_get_arch_name (uint8_t arch);