[RFC PATCH mtd-utils 005/110] ubifs-utils: Define PROGRAM_NAME as variable

[Zhihao Cheng]

PROGRAM_NAME is defined as a const string "mkfs.ubifs", which won't be
suitable for fsck.ubifs. Add 'program_name' member in ubifs_info
structure, define PROGRAM_NAME as ubifs_info.program_name. Then, error
messages will display right program name if fsck.ubifs is supported.
Besides, add 'program_type' member in ubifs_info structure to identify
which current program type is, without comparing program name.

Signed-off-by: Zhihao Cheng <chengzhihao1 at huawei.com>
---
 ubifs-utils/common/crypto.c              | 10 +++++++---
 ubifs-utils/common/defs.h                |  4 ++++
 ubifs-utils/common/fscrypt.c             |  7 +++++--
 ubifs-utils/common/hashtable/hashtable.c | 14 +++++++++-----
 ubifs-utils/common/lpt.c                 |  7 +++++--
 ubifs-utils/common/ubifs.h               |  6 ++++++
 ubifs-utils/mkfs.ubifs/mkfs.ubifs.c      |  3 +++
 7 files changed, 39 insertions(+), 12 deletions(-)

diff --git a/ubifs-utils/common/crypto.c b/ubifs-utils/common/crypto.c
index 60a67a4e..614a16de 100644
--- a/ubifs-utils/common/crypto.c
+++ b/ubifs-utils/common/crypto.c
@@ -23,10 +23,14 @@
 #include <string.h>
 #include <assert.h>
 
-#define PROGRAM_NAME "mkfs.ubifs"
-#include "common.h"
-#include "defs.h"
 #include "fscrypt.h"
+#include "defs.h"
+#include "ubifs.h"
+
+/* common.h requires the PROGRAM_NAME macro */
+extern struct ubifs_info info_;
+#define PROGRAM_NAME (info_.program_name)
+#include "common.h"
 
 static int do_hash(const EVP_MD *md, const unsigned char *in, size_t len, unsigned char *out)
 {
diff --git a/ubifs-utils/common/defs.h b/ubifs-utils/common/defs.h
index e1aded03..143f6c65 100644
--- a/ubifs-utils/common/defs.h
+++ b/ubifs-utils/common/defs.h
@@ -12,6 +12,10 @@
 #include <byteswap.h>
 #include <errno.h>
 
+#define MKFS_PROGRAM_NAME "mkfs.ubifs"
+
+enum { MKFS_PROGRAM_TYPE = 0 };
+
 extern int debug_level;
 
 #define dbg_msg(lvl, fmt, ...) do {if (debug_level >= lvl)                \
diff --git a/ubifs-utils/common/fscrypt.c b/ubifs-utils/common/fscrypt.c
index 94c6c377..cc989638 100644
--- a/ubifs-utils/common/fscrypt.c
+++ b/ubifs-utils/common/fscrypt.c
@@ -20,11 +20,14 @@
 
 #include <endian.h>
 
-#define PROGRAM_NAME "mkfs.ubifs"
-#include "common.h"
 #include "fscrypt.h"
 #include "defs.h"
+#include "ubifs.h"
 
+/* common.h requires the PROGRAM_NAME macro */
+extern struct ubifs_info info_;
+#define PROGRAM_NAME (info_.program_name)
+#include "common.h"
 
 static __u8 fscrypt_masterkey[FS_MAX_KEY_SIZE];
 static struct cipher *fscrypt_cipher;
diff --git a/ubifs-utils/common/hashtable/hashtable.c b/ubifs-utils/common/hashtable/hashtable.c
index c1f99edd..071afd22 100644
--- a/ubifs-utils/common/hashtable/hashtable.c
+++ b/ubifs-utils/common/hashtable/hashtable.c
@@ -1,15 +1,19 @@
 /* Copyright (C) 2004 Christopher Clark <firstname.lastname at cl.cam.ac.uk> */
 
-#define PROGRAM_NAME "hashtable"
-
-#include "common.h"
-#include "hashtable.h"
-#include "hashtable_private.h"
 #include <stdlib.h>
 #include <stdio.h>
 #include <string.h>
 #include <math.h>
 
+#include "ubifs.h"
+#include "hashtable.h"
+#include "hashtable_private.h"
+
+/* common.h requires the PROGRAM_NAME macro */
+extern struct ubifs_info info_;
+#define PROGRAM_NAME (info_.program_name)
+#include "common.h"
+
 /*
 Credit for primes table: Aaron Krowne
  http://br.endernet.org/~akrowne/
diff --git a/ubifs-utils/common/lpt.c b/ubifs-utils/common/lpt.c
index 23ffe7f7..746fc7db 100644
--- a/ubifs-utils/common/lpt.c
+++ b/ubifs-utils/common/lpt.c
@@ -24,14 +24,17 @@
 #include <openssl/evp.h>
 #endif
 
-#define PROGRAM_NAME "mkfs.ubifs"
-#include "common.h"
 #include "lpt.h"
 #include "defs.h"
 #include "ubifs.h"
 #include "crc16.h"
 #include "sign.h"
 
+/* common.h requires the PROGRAM_NAME macro */
+extern struct ubifs_info info_;
+#define PROGRAM_NAME (info_.program_name)
+#include "common.h"
+
 /**
  * do_calc_lpt_geom - calculate sizes for the LPT area.
  * @c: the UBIFS file-system description object
diff --git a/ubifs-utils/common/ubifs.h b/ubifs-utils/common/ubifs.h
index 0eef31ac..2b0ffe56 100644
--- a/ubifs-utils/common/ubifs.h
+++ b/ubifs-utils/common/ubifs.h
@@ -273,6 +273,9 @@ struct ubifs_znode
  * @highest_inum: highest used inode number
  * @max_sqnum: current global sequence number
  *
+ * @program_type: used to identify the type of current program
+ * @program_name: program name
+ *
  * @jhead_cnt: count of journal heads
  * @max_bud_bytes: maximum number of bytes allowed in buds
  *
@@ -360,6 +363,9 @@ struct ubifs_info
 	ino_t highest_inum;
 	unsigned long long max_sqnum;
 
+	int program_type;
+	const char *program_name;
+
 	int jhead_cnt;
 	long long max_bud_bytes;
 
diff --git a/ubifs-utils/mkfs.ubifs/mkfs.ubifs.c b/ubifs-utils/mkfs.ubifs/mkfs.ubifs.c
index a440bc4b..b4bed018 100644
--- a/ubifs-utils/mkfs.ubifs/mkfs.ubifs.c
+++ b/ubifs-utils/mkfs.ubifs/mkfs.ubifs.c
@@ -3056,6 +3056,9 @@ int main(int argc, char *argv[])
 {
 	int err;
 
+	info_.program_name = MKFS_PROGRAM_NAME;
+	info_.program_type = MKFS_PROGRAM_TYPE;
+
 	if (crypto_init())
 		return -1;
 
-- 
2.13.6