commit fc76cabb0c70b61d89701fce09ff96e538615379
from: Stefan Sperling <stsp@stsp.name>
date: Tue Dec 25 14:24:16 2018 UTC

store base commit of each blob in file index

commit - eaccb85f7218ef3615353170a2a64ec1c48028e2
commit + fc76cabb0c70b61d89701fce09ff96e538615379
blob - 86250c11fe57924c5ca80e01cac4cd1188d8e075
blob + a6bdde165134042c5baf59120676cb60d8c8d153
--- lib/fileindex.c
+++ lib/fileindex.c
@@ -29,7 +29,8 @@
 
 const struct got_error *
 got_fileindex_entry_alloc(struct got_fileindex_entry **entry,
-    const char *ondisk_path, const char *relpath, uint8_t *blob_sha1)
+    const char *ondisk_path, const char *relpath, uint8_t *blob_sha1,
+    uint8_t *commit_sha1)
 {
 	struct stat sb;
 	size_t len;
@@ -63,6 +64,7 @@ got_fileindex_entry_alloc(struct got_fileindex_entry *
 	(*entry)->mode |= ((sb.st_mode & (S_IRWXU | S_IRWXG | S_IRWXO)) <<
 	    GOT_INDEX_ENTRY_MODE_PERMS_SHIFT);
 	memcpy((*entry)->blob_sha1, blob_sha1, SHA1_DIGEST_LENGTH);
+	memcpy((*entry)->commit_sha1, commit_sha1, SHA1_DIGEST_LENGTH);
 	len = strlen(relpath);
 	if (len > GOT_INDEX_ENTRY_F_PATH_LEN)
 		len = GOT_INDEX_ENTRY_F_PATH_LEN;
@@ -210,6 +212,11 @@ write_fileindex_entry(SHA1_CTX *ctx, struct got_filein
 
 	SHA1Update(ctx, entry->blob_sha1, SHA1_DIGEST_LENGTH);
 	n = fwrite(entry->blob_sha1, 1, SHA1_DIGEST_LENGTH, outfile);
+	if (n != SHA1_DIGEST_LENGTH)
+		return got_ferror(outfile, GOT_ERR_IO);
+
+	SHA1Update(ctx, entry->commit_sha1, SHA1_DIGEST_LENGTH);
+	n = fwrite(entry->commit_sha1, 1, SHA1_DIGEST_LENGTH, outfile);
 	if (n != SHA1_DIGEST_LENGTH)
 		return got_ferror(outfile, GOT_ERR_IO);
 
@@ -383,6 +390,13 @@ read_fileindex_entry(struct got_fileindex_entry **entr
 	}
 	SHA1Update(ctx, entry->blob_sha1, SHA1_DIGEST_LENGTH);
 
+	n = fread(entry->commit_sha1, 1, SHA1_DIGEST_LENGTH, infile);
+	if (n != SHA1_DIGEST_LENGTH) {
+		err = got_ferror(infile, GOT_ERR_IO);
+		goto done;
+	}
+	SHA1Update(ctx, entry->commit_sha1, SHA1_DIGEST_LENGTH);
+
 	err = read_fileindex_val32(&entry->flags, ctx, infile);
 	if (err)
 		goto done;
blob - d0855bedd7a7257124e3ec233a0cae2cb93b85ad
blob + e8716e82b5c7226df522570f9907830e40f4274d
--- lib/got_lib_fileindex.h
+++ lib/got_lib_fileindex.h
@@ -45,6 +45,9 @@ struct got_fileindex_entry {
 	/* SHA1 of corresponding blob in repository. */
 	uint8_t blob_sha1[SHA1_DIGEST_LENGTH];
 
+	/* SHA1 of corresponding base commit in repository. */
+	uint8_t commit_sha1[SHA1_DIGEST_LENGTH];
+
 	uint32_t flags;
 #define GOT_INDEX_ENTRY_F_PATH_LEN	0x00000fff
 #define GOT_INDEX_ENTRY_F_STAGE		0x00003000
@@ -83,7 +86,7 @@ struct got_fileindex_hdr {
 };
 
 const struct got_error *got_fileindex_entry_alloc(struct got_fileindex_entry **,
-    const char *, const char *, uint8_t *);
+    const char *, const char *, uint8_t *, uint8_t *);
 void got_fileindex_entry_free(struct got_fileindex_entry *);
 struct got_fileindex *got_fileindex_alloc(void);
 void got_fileindex_free(struct got_fileindex *);
blob - 4656e2e4a0598b526e576e75b85fc270885e00a5
blob + f8d6e1c9f31ed998a56d9e161ceda32926f2ba60
--- lib/worktree.c
+++ lib/worktree.c
@@ -461,7 +461,8 @@ add_file_on_disk(struct got_worktree *worktree, struct
 	fsync(fd);
 
 	err = got_fileindex_entry_alloc(&entry, ondisk_path,
-	    apply_path_prefix(worktree, path), blob->id.sha1);
+	    apply_path_prefix(worktree, path), blob->id.sha1,
+	    worktree->base_commit_id->sha1);
 	if (err)
 		goto done;