Automatic merge of /home/torvalds/junkio/.git/

Makefile

@@ -21,7 +21,7 @@ PROG=   git-update-cache git-diff-files git-init-db git-write-tree \
 	git-check-files git-ls-tree git-merge-base git-merge-cache \
 	git-unpack-file git-export git-diff-cache git-convert-cache \
 	git-http-pull git-rpush git-rpull git-rev-list git-mktag \
-	git-diff-tree-helper git-tar-tree git-local-pull
+	git-diff-tree-helper git-tar-tree git-local-pull git-write-blob
 
 all: $(PROG)
 
@@ -94,6 +94,7 @@ git-rev-list: rev-list.c
 git-mktag: mktag.c
 git-diff-tree-helper: diff-tree-helper.c
 git-tar-tree: tar-tree.c
+git-write-blob: write-blob.c
 
 git-http-pull: LIBS += -lcurl
 

cache.h

@@ -116,6 +116,7 @@ extern int remove_entry_at(int pos);
 extern int remove_file_from_cache(char *path);
 extern int same_name(struct cache_entry *a, struct cache_entry *b);
 extern int cache_match_stat(struct cache_entry *ce, struct stat *st);
+extern int index_fd(unsigned char *sha1, int fd, struct stat *st);
 
 #define MTIME_CHANGED	0x0001
 #define CTIME_CHANGED	0x0002

git-merge-one-file-script

@@ -6,81 +6,69 @@
 #   $2 - file in branch1 SHA1 (or empty)
 #   $3 - file in branch2 SHA1 (or empty)
 #   $4 - pathname in repository
-#
+#   $5 - orignal file mode (or empty)
+#   $6 - file in branch1 mode (or empty)
+#   $7 - file in branch2 mode (or empty)
 #
 # Handle some trivial cases.. The _really_ trivial cases have
 # been handled already by git-read-tree, but that one doesn't
-# do any merges that migth change the tree layout
-#
-
-# if the directory is newly added in a branch, it might not exist
-# in the current tree
-dir=$(dirname "$4")
-mkdir -p "$dir" || exit
+# do any merges that migth change the tree layout.
 
 case "${1:-.}${2:-.}${3:-.}" in
 #
-# deleted in both
+# Deleted in both.
 #
 "$1..")
-	echo "ERROR: $4 is removed in both branches"
-	echo "ERROR: This is a potential rename conflict"
+	echo "ERROR: $4 is removed in both branches."
+	echo "ERROR: This is a potential rename conflict."
 	exit 1;;
 #
-# deleted in one and unchanged in the other
+# Deleted in one and unchanged in the other.
 #
 "$1.." | "$1.$1" | "$1$1.")
 	echo "Removing $4"
-	rm -f -- "$4" && exec git-update-cache --remove -- "$4" ;;
+	exec git-update-cache --force-remove "$4" ;;
 #
-# added in one
+# Added in one.
 #
 ".$2." | "..$3" )
 	case "$6$7" in *7??) mode=+x;; *) mode=-x;; esac
-	echo "Adding $4 with perm $mode"
-	rm -f -- "$4" &&
-	git-cat-file blob "$2$3" >"$4" &&
-	chmod "$mode" -- "$4" &&
-	exec git-update-cache --add -- "$4" ;;
+	echo "Adding $4 with perm $mode."
+	exec git-update-cache --add --cacheinfo "$6$7" "$2$3" "$4" ;;
 #
-# Added in both (check for same permissions)
+# Added in both (check for same permissions).
 #
-".$2$2")
+".$3$2")
 	if [ "$6" != "$7" ]; then
-		echo "ERROR: File $4 added in both branches, permissions conflict $6->$7"
+		echo "ERROR: File $4 added identically in both branches,"
+		echo "ERROR: but permissions conflict $6->$7."
 		exit 1
 	fi
 	case "$6" in *7??) mode=+x;; *) mode=-x;; esac
 	echo "Adding $4 with perm $mode"
-	rm -f -- "$4" &&
-	git-cat-file blob "$2" >"$4" &&
-	chmod "$mode" -- "$4" &&
-	exec git-update-cache --add -- "$4" ;;
+	exec git-update-cache --add --cacheinfo "$6" "$2" "$4" ;;
 #
-# Modified in both, but differently ;(
+# Modified in both, but differently.
 #
 "$1$2$3")
-	echo "Auto-merging $4"
+	echo "Auto-merging $4."
 	orig=$(git-unpack-file $1)
 	src1=$(git-unpack-file $2)
 	src2=$(git-unpack-file $3)
 	merge "$src2" "$orig" "$src1"
 	ret=$?
 	if [ "$6" != "$7" ]; then
-		echo "ERROR: Permissions $5->$6->$7 don't match merging $src2"
-		if [ $ret -ne 0 ]; then
-			echo "ERROR: Leaving conflict merge in $src2"
-		fi
-		exit 1
+		echo "ERROR: Permissions $5->$6->$7 don't match."
 	fi
 	if [ $ret -ne 0 ]; then
-		echo "ERROR: Leaving conflict merge in $src2"
+		echo "ERROR: Leaving conflict merge in $src2."
 		exit 1
 	fi
-	case "$6" in *7??) mode=+x;; *) mode=-x;; esac
-	rm -f -- "$4" && cat "$src2" >"$4" && chmod "$mode" -- "$4" &&
-	exec git-update-cache --add -- "$4" ;;
+	sha1=$(git-write-blob "$src2") || {
+		echo "ERROR: Leaving conflict merge in $src2."
+	}
+	exec git-update-cache --add --cacheinfo "$6" $sha1 "$4" ;;
 *)
-	echo "Not handling case $4: $1 -> $2 -> $3" ;;
+	echo "ERROR: Not handling case $4: $1 -> $2 -> $3" ;;
 esac
 exit 1

sha1_file.c

@@ -460,3 +460,54 @@ int has_sha1_file(const unsigned char *sha1)
 		return 1;
 	return 0;
 }
+
+int index_fd(unsigned char *sha1, int fd, struct stat *st)
+{
+	z_stream stream;
+	unsigned long size = st->st_size;
+	int max_out_bytes = size + 200;
+	void *out = xmalloc(max_out_bytes);
+	void *metadata = xmalloc(200);
+	int metadata_size;
+	void *in;
+	SHA_CTX c;
+
+	in = "";
+	if (size)
+		in = mmap(NULL, size, PROT_READ, MAP_PRIVATE, fd, 0);
+	close(fd);
+	if (!out || (int)(long)in == -1)
+		return -1;
+
+	metadata_size = 1+sprintf(metadata, "blob %lu", size);
+
+	SHA1_Init(&c);
+	SHA1_Update(&c, metadata, metadata_size);
+	SHA1_Update(&c, in, size);
+	SHA1_Final(sha1, &c);
+
+	memset(&stream, 0, sizeof(stream));
+	deflateInit(&stream, Z_BEST_COMPRESSION);
+
+	/*
+	 * ASCII size + nul byte
+	 */	
+	stream.next_in = metadata;
+	stream.avail_in = metadata_size;
+	stream.next_out = out;
+	stream.avail_out = max_out_bytes;
+	while (deflate(&stream, 0) == Z_OK)
+		/* nothing */;
+
+	/*
+	 * File content
+	 */
+	stream.next_in = in;
+	stream.avail_in = size;
+	while (deflate(&stream, Z_FINISH) == Z_OK)
+		/*nothing */;
+
+	deflateEnd(&stream);
+	
+	return write_sha1_buffer(sha1, out, stream.total_out);
+}

update-cache.c

@@ -31,57 +31,6 @@ static inline long IS_ERR(const void *ptr)
 	return (unsigned long)ptr > (unsigned long)-1000L;
 }
 
-static int index_fd(unsigned char *sha1, int fd, struct stat *st)
-{
-	z_stream stream;
-	unsigned long size = st->st_size;
-	int max_out_bytes = size + 200;
-	void *out = xmalloc(max_out_bytes);
-	void *metadata = xmalloc(200);
-	int metadata_size;
-	void *in;
-	SHA_CTX c;
-
-	in = "";
-	if (size)
-		in = mmap(NULL, size, PROT_READ, MAP_PRIVATE, fd, 0);
-	close(fd);
-	if (!out || (int)(long)in == -1)
-		return -1;
-
-	metadata_size = 1+sprintf(metadata, "blob %lu", size);
-
-	SHA1_Init(&c);
-	SHA1_Update(&c, metadata, metadata_size);
-	SHA1_Update(&c, in, size);
-	SHA1_Final(sha1, &c);
-
-	memset(&stream, 0, sizeof(stream));
-	deflateInit(&stream, Z_BEST_COMPRESSION);
-
-	/*
-	 * ASCII size + nul byte
-	 */	
-	stream.next_in = metadata;
-	stream.avail_in = metadata_size;
-	stream.next_out = out;
-	stream.avail_out = max_out_bytes;
-	while (deflate(&stream, 0) == Z_OK)
-		/* nothing */;
-
-	/*
-	 * File content
-	 */
-	stream.next_in = in;
-	stream.avail_in = size;
-	while (deflate(&stream, Z_FINISH) == Z_OK)
-		/*nothing */;
-
-	deflateEnd(&stream);
-	
-	return write_sha1_buffer(sha1, out, stream.total_out);
-}
-
 /*
  * This only updates the "non-critical" parts of the directory
  * cache, ie the parts that aren't tracked by GIT, and only used
@@ -357,6 +306,15 @@ int main(int argc, char **argv)
 				i += 3;
 				continue;
 			}
+			if (!strcmp(path, "--force-remove")) {
+				if (argc <= i + 1)
+					die("update-cache: --force-remove <path>");
+				if (remove_file_from_cache(argv[i+1]))
+					die("update-cache: --force-remove cannot remove %s", argv[i+1]);
+				i++;
+				continue;
+			}
+
 			if (!strcmp(path, "--ignore-missing")) {
 				not_new = 1;
 				continue;

write-blob.c

@@ -0,0 +1,25 @@
+/*
+ * GIT - The information manager from hell
+ *
+ * Copyright (C) Linus Torvalds, 2005
+ */
+#include "cache.h"
+
+int main(int argc, char **argv)
+{
+	int i;
+
+	for (i = 1 ; i < argc; i++) {
+		char *path = argv[i];
+		int fd;
+		struct stat st;
+		unsigned char sha1[20];
+		fd = open(path, O_RDONLY);
+		if (fd < 0 ||
+		    fstat(fd, &st) < 0 ||
+		    index_fd(sha1, fd, &st) < 0)
+			die("Unable to add blob %s to database", path);
+		printf("%s\n", sha1_to_hex(sha1));
+	}
+	return 0;
+}