ce_smudge_racily_clean_entry: explain why it works.

diff --git a/unpack-objects.c b/unpack-objects.c
index 7e7be5cbd42e2f6ad178f1a2832673c8e9279e4e..5c5cb12f6fa2a9a8fe061c2e75380c8b9e7ebaf1 100644 (file)
--- a/unpack-objects.c
+++ b/unpack-objects.c
@@ -6,7 +6,7 @@
 #include <sys/time.h>
 
 static int dry_run, quiet;
-static const char unpack_usage[] = "git-unpack-objects < pack-file";
+static const char unpack_usage[] = "git-unpack-objects [-n] [-q] < pack-file";
 
 /* We always read in 4kB chunks. */
 static unsigned char buffer[4096];
@@ -31,12 +31,10 @@ static void * fill(int min)
                offset = 0;
        }
        do {
-               int ret = read(0, buffer + len, sizeof(buffer) - len);
+               int ret = xread(0, buffer + len, sizeof(buffer) - len);
                if (ret <= 0) {
                        if (!ret)
                                die("early EOF");
-                       if (errno == EAGAIN || errno == EINTR)
-                               continue;
                        die("read error on input: %s", strerror(errno));
                }
                len += ret;
@@ -269,6 +267,8 @@ int main(int argc, char **argv)
        int i;
        unsigned char sha1[20];
 
+       setup_git_directory();
+
        for (i = 1 ; i < argc; i++) {
                const char *arg = argv[i];
 
@@ -297,14 +297,9 @@ int main(int argc, char **argv)
 
        /* Write the last part of the buffer to stdout */
        while (len) {
-               int ret = write(1, buffer + offset, len);
-               if (!ret)
+               int ret = xwrite(1, buffer + offset, len);
+               if (ret <= 0)
                        break;
-               if (ret < 0) {
-                       if (errno == EAGAIN || errno == EINTR)
-                               continue;
-                       break;
-               }
                len -= ret;
                offset += ret;
        }