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-rw-r--r--mktag.c19
1 files changed, 9 insertions, 10 deletions
diff --git a/mktag.c b/mktag.c
index 2328878..f1598db 100644
--- a/mktag.c
+++ b/mktag.c
@@ -45,7 +45,7 @@ static int verify_tag(char *buffer, unsigned long size)
unsigned char sha1[20];
const char *object, *type_line, *tag_line, *tagger_line;
- if (size < 64 || size > MAXSIZE-1)
+ if (size < 64)
return -1;
buffer[size] = 0;
@@ -105,8 +105,8 @@ static int verify_tag(char *buffer, unsigned long size)
int main(int argc, char **argv)
{
- unsigned long size;
- char buffer[MAXSIZE];
+ unsigned long size = 4096;
+ char *buffer = malloc(size);
unsigned char result_sha1[20];
if (argc != 1)
@@ -114,13 +114,9 @@ int main(int argc, char **argv)
setup_git_directory();
- // Read the signature
- size = 0;
- for (;;) {
- int ret = xread(0, buffer + size, MAXSIZE - size);
- if (ret <= 0)
- break;
- size += ret;
+ if (read_pipe(0, &buffer, &size)) {
+ free(buffer);
+ die("could not read from stdin");
}
// Verify it for some basic sanity: it needs to start with "object <sha1>\ntype\ntagger "
@@ -129,6 +125,9 @@ int main(int argc, char **argv)
if (write_sha1_file(buffer, size, tag_type, result_sha1) < 0)
die("unable to write tag file");
+
+ free(buffer);
+
printf("%s\n", sha1_to_hex(result_sha1));
return 0;
}