X-Git-Url: https://git.verplant.org/?a=blobdiff_plain;f=update-index.c;h=11b7f6a5169e0a9a957155c03c7a56667efe980c;hb=2c4ed386e8861e730037abe4f4d9e032c5c46242;hp=a84836be4a0cd32a61d4ae35c8ce3b0108ad5a34;hpb=973d6a2015ead1afa17ea4c728b4b9a4b9716d19;p=git.git

diff --git a/update-index.c b/update-index.c
index a84836be..11b7f6a5 100644
--- a/update-index.c
+++ b/update-index.c
@@ -338,7 +338,7 @@ static void read_index_info(int line_termination)
 	struct strbuf buf;
 	strbuf_init(&buf);
 	while (1) {
-		char *ptr;
+		char *ptr, *tab;
 		char *path_name;
 		unsigned char sha1[20];
 		unsigned int mode;
@@ -348,12 +348,15 @@ static void read_index_info(int line_termination)
 			break;
 
 		mode = strtoul(buf.buf, &ptr, 8);
-		if (ptr == buf.buf || *ptr != ' ' ||
-		    get_sha1_hex(ptr + 1, sha1) ||
-		    ptr[41] != '\t')
+		if (ptr == buf.buf || *ptr != ' ')
 			goto bad_line;
 
-		ptr += 42;
+		tab = strchr(ptr, '\t');
+		if (!tab || tab - ptr < 41)
+			goto bad_line;
+		if (get_sha1_hex(tab - 40, sha1) || tab[-41] != ' ')
+			goto bad_line;
+		ptr = tab + 1;
 
 		if (line_termination && ptr[0] == '"')
 			path_name = unquote_c_style(ptr, NULL);
@@ -392,6 +395,9 @@ static void read_index_info(int line_termination)
 	}
 }
 
+static const char update_index_usage[] =
+"git-update-index [-q] [--add] [--replace] [--remove] [--unmerged] [--refresh] [--cacheinfo] [--chmod=(+|-)x] [--info-only] [--force-remove] [--stdin] [--index-info] [--ignore-missing] [-z] [--verbose] [--] <file>...";
+
 int main(int argc, const char **argv)
 {
 	int i, newfd, entries, has_errors = 0, line_termination = '\n';
@@ -489,6 +495,8 @@ int main(int argc, const char **argv)
 				verbose = 1;
 				continue;
 			}
+			if (!strcmp(path, "-h") || !strcmp(path, "--help"))
+				usage(update_index_usage);
 			die("unknown option %s", path);
 		}
 		update_one(path, prefix, prefix_length);