[PATCH] Kill a bunch of pointer sign warnings for gcc4

- Raw hashes should be unsigned char.
 - String functions want signed char.
 - Hash and compress functions want unsigned char.

Signed-off By: Brian Gerst <bgerst@didntduck.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

cache.h

@@ -143,7 +143,7 @@ extern char *sha1_file_name(const unsigned char *sha1);
 extern void * map_sha1_file(const unsigned char *sha1, unsigned long *size);
 extern void * unpack_sha1_file(void *map, unsigned long mapsize, char *type, unsigned long *size);
 extern void * read_sha1_file(const unsigned char *sha1, char *type, unsigned long *size);
-extern int write_sha1_file(char *buf, unsigned long len, const char *type, unsigned char *return_sha1);
+extern int write_sha1_file(void *buf, unsigned long len, const char *type, unsigned char *return_sha1);
 
 extern int check_sha1_signature(unsigned char *sha1, void *buf, unsigned long size, const char *type);
 
@@ -167,7 +167,7 @@ extern int error(const char *err, ...);
 extern int cache_name_compare(const char *name1, int len1, const char *name2, int len2);
 
 extern void *read_object_with_reference(const unsigned char *sha1,
-					const unsigned char *required_type,
+					const char *required_type,
 					unsigned long *size,
 					unsigned char *sha1_ret);
 

diff-cache.c

@@ -63,7 +63,7 @@ static int show_modified(struct cache_entry *old,
 {
 	unsigned int mode, oldmode;
 	unsigned char *sha1;
-	unsigned char old_sha1_hex[60];
+	char old_sha1_hex[60];
 
 	if (get_stat_data(new, &sha1, &mode) < 0) {
 		if (report_missing)

diff-files.c

@@ -48,7 +48,7 @@ static void show_file(int pfx, struct cache_entry *ce)
 }
 
 static void show_modified(int oldmode, int mode,
-			  const char *old_sha1, const char *sha1,
+			  const unsigned char *old_sha1, const unsigned char *sha1,
 			  char *path)
 {
 	char old_sha1_hex[41];
@@ -64,7 +64,7 @@ static void show_modified(int oldmode, int mode,
 
 int main(int argc, char **argv)
 {
-	static const char null_sha1[20] = { 0, };
+	static const unsigned char null_sha1[20] = { 0, };
 	int entries = read_cache();
 	int i;
 

http-pull.c

@@ -24,7 +24,7 @@ static int zret;
 
 static size_t fwrite_sha1_file(void *ptr, size_t eltsize, size_t nmemb, 
 			       void *data) {
-	char expn[4096];
+	unsigned char expn[4096];
 	size_t size = eltsize * nmemb;
 	int posn = 0;
 	do {
@@ -49,7 +49,7 @@ int fetch(unsigned char *sha1)
 {
 	char *hex = sha1_to_hex(sha1);
 	char *filename = sha1_file_name(sha1);
-	char real_sha1[20];
+	unsigned char real_sha1[20];
 	char *url;
 	char *posn;
 

ls-tree.c

@@ -24,7 +24,7 @@ static void print_path_prefix(struct path_prefix *prefix)
 }
 
 static void list_recursive(void *buffer,
-			   const unsigned char *type,
+			   const char *type,
 			   unsigned long size,
 			   struct path_prefix *prefix)
 {

read-cache.c

@@ -344,7 +344,7 @@ unmap:
 }
 
 #define WRITE_BUFFER_SIZE 8192
-static char write_buffer[WRITE_BUFFER_SIZE];
+static unsigned char write_buffer[WRITE_BUFFER_SIZE];
 static unsigned long write_buffer_len;
 
 static int ce_write(SHA_CTX *context, int fd, void *data, unsigned int len)

rpush.c

@@ -6,7 +6,7 @@
 void service(int fd_in, int fd_out) {
 	ssize_t size;
 	int posn;
-	char sha1[20];
+	char unsigned sha1[20];
 	unsigned long objsize;
 	void *buf;
 	do {

sha1_file.c

@@ -313,13 +313,13 @@ void * unpack_sha1_file(void *map, unsigned long mapsize, char *type, unsigned l
 	int ret, bytes;
 	z_stream stream;
 	char buffer[8192];
-	char *buf;
+	unsigned char *buf;
 
 	/* Get the data stream */
 	memset(&stream, 0, sizeof(stream));
 	stream.next_in = map;
 	stream.avail_in = mapsize;
-	stream.next_out = buffer;
+	stream.next_out = (unsigned char *)buffer;
 	stream.avail_out = sizeof(buffer);
 
 	inflateInit(&stream);
@@ -359,7 +359,7 @@ void * read_sha1_file(const unsigned char *sha1, char *type, unsigned long *size
 }
 
 void *read_object_with_reference(const unsigned char *sha1,
-				 const unsigned char *required_type,
+				 const char *required_type,
 				 unsigned long *size,
 				 unsigned char *actual_sha1_return)
 {
@@ -403,20 +403,20 @@ void *read_object_with_reference(const unsigned char *sha1,
 	}
 }
 
-int write_sha1_file(char *buf, unsigned long len, const char *type, unsigned char *returnsha1)
+int write_sha1_file(void *buf, unsigned long len, const char *type, unsigned char *returnsha1)
 {
 	int size;
-	char *compressed;
+	unsigned char *compressed;
 	z_stream stream;
 	unsigned char sha1[20];
 	SHA_CTX c;
 	char *filename;
 	static char tmpfile[PATH_MAX];
-	char hdr[50];
+	unsigned char hdr[50];
 	int fd, hdrlen, ret;
 
 	/* Generate the header */
-	hdrlen = sprintf(hdr, "%s %lu", type, len)+1;
+	hdrlen = sprintf((char *)hdr, "%s %lu", type, len)+1;
 
 	/* Sha1.. */
 	SHA1_Init(&c);
@@ -516,8 +516,8 @@ int write_sha1_from_fd(const unsigned char *sha1, int fd)
 	int local;
 	z_stream stream;
 	unsigned char real_sha1[20];
-	char buf[4096];
-	char discard[4096];
+	unsigned char buf[4096];
+	unsigned char discard[4096];
 	int ret;
 	SHA_CTX c;
 

strbuf.h

@@ -4,7 +4,7 @@ struct strbuf {
 	int alloc;
 	int len;
 	int eof;
-	unsigned char *buf;
+	char *buf;
 };
 
 extern void strbuf_init(struct strbuf *);

tar-tree.c

@@ -205,7 +205,7 @@ static void append_extended_header(char **p, const char *keyword,
 	append_char(p, '\n');
 }
 
-static void write_header(const char *, char, const char *, struct path_prefix *,
+static void write_header(const unsigned char *, char, const char *, struct path_prefix *,
                          const char *, unsigned int, void *, unsigned long);
 
 /* stores a pax extended header directly in the block buffer */
@@ -238,7 +238,7 @@ static void write_extended_header(const char *headerfilename, int is_dir,
 	free(buffer);
 }
 
-static void write_global_extended_header(const char *sha1)
+static void write_global_extended_header(const unsigned char *sha1)
 {
 	char *p;
 	unsigned int size;
@@ -253,7 +253,7 @@ static void write_global_extended_header(const char *sha1)
 }
 
 /* stores a ustar header directly in the block buffer */
-static void write_header(const char *sha1, char typeflag, const char *basepath,
+static void write_header(const unsigned char *sha1, char typeflag, const char *basepath,
                          struct path_prefix *prefix, const char *path,
                          unsigned int mode, void *buffer, unsigned long size)
 {