ewah: support platforms that require aligned reads

diff --git a/builtin/receive-pack.c b/builtin/receive-pack.c
index e8878de45c9474cddd5c713cd7a712bed15a515a..67ce1ef105d1494e7905e66750b14676e082e11c 100644 (file)
--- a/builtin/receive-pack.c
+++ b/builtin/receive-pack.c
@@ -8,6 +8,7 @@
 #include "commit.h"
 #include "object.h"
 #include "remote.h"
+#include "connect.h"
 #include "transport.h"
 #include "string-list.h"
 #include "sha1-array.h"
@@ -38,6 +39,7 @@ static int quiet;
 static int prefer_ofs_delta = 1;
 static int auto_update_server_info;
 static int auto_gc = 1;
+static int fix_thin = 1;
 static const char *head_name;
 static void *head_name_to_free;
 static int sent_capabilities;
@@ -59,6 +61,11 @@ static enum deny_action parse_deny_action(const char *var, const char *value)
 
 static int receive_pack_config(const char *var, const char *value, void *cb)
 {
+       int status = parse_hide_refs_config(var, value, "receive");
+
+       if (status)
+               return status;
+
        if (strcmp(var, "receive.denydeletes") == 0) {
                deny_deletes = git_config_bool(var, value);
                return 0;
@@ -119,6 +126,9 @@ static int receive_pack_config(const char *var, const char *value, void *cb)
 
 static void show_ref(const char *path, const unsigned char *sha1)
 {
+       if (ref_is_hidden(path))
+               return;
+
        if (sent_capabilities)
                packet_write(1, "%s %s\n", sha1_to_hex(sha1), path);
        else
@@ -516,7 +526,8 @@ static const char *update(struct command *cmd)
                return NULL; /* good */
        }
        else {
-               lock = lock_any_ref_for_update(namespaced_name, old_sha1, 0);
+               lock = lock_any_ref_for_update(namespaced_name, old_sha1,
+                                              0, NULL);
                if (!lock) {
                        rp_error("failed to lock %s", name);
                        return "failed to lock";
@@ -685,6 +696,20 @@ static int iterate_receive_command_list(void *cb_data, unsigned char sha1[20])
        return -1; /* end of list */
 }
 
+static void reject_updates_to_hidden(struct command *commands)
+{
+       struct command *cmd;
+
+       for (cmd = commands; cmd; cmd = cmd->next) {
+               if (cmd->error_string || !ref_is_hidden(cmd->ref_name))
+                       continue;
+               if (is_null_sha1(cmd->new_sha1))
+                       cmd->error_string = "deny deleting a hidden ref";
+               else
+                       cmd->error_string = "deny updating a hidden ref";
+       }
+}
+
 static void execute_commands(struct command *commands, const char *unpacker_error)
 {
        struct command *cmd;
@@ -701,6 +726,8 @@ static void execute_commands(struct command *commands, const char *unpacker_erro
                                       0, &cmd))
                set_connectivity_errors(commands);
 
+       reject_updates_to_hidden(commands);
+
        if (run_receive_hook(commands, "pre-receive", 0)) {
                for (cmd = commands; cmd; cmd = cmd->next) {
                        if (!cmd->error_string)
@@ -730,17 +757,15 @@ static struct command *read_head_info(void)
        struct command *commands = NULL;
        struct command **p = &commands;
        for (;;) {
-               static char line[1000];
+               char *line;
                unsigned char old_sha1[20], new_sha1[20];
                struct command *cmd;
                char *refname;
                int len, reflen;
 
-               len = packet_read_line(0, line, sizeof(line));
-               if (!len)
+               line = packet_read_line(0, &len);
+               if (!line)
                        break;
-               if (line[len-1] == '\n')
-                       line[--len] = 0;
                if (len < 83 ||
                    line[40] != ' ' ||
                    line[81] != ' ' ||
@@ -804,8 +829,11 @@ static const char *unpack(int err_fd)
                            : 0);
 
        hdr_err = parse_pack_header(&hdr);
-       if (hdr_err)
+       if (hdr_err) {
+               if (err_fd > 0)
+                       close(err_fd);
                return hdr_err;
+       }
        snprintf(hdr_arg, sizeof(hdr_arg),
                        "--pack_header=%"PRIu32",%"PRIu32,
                        ntohl(hdr.hdr_version), ntohl(hdr.hdr_entries));
@@ -844,7 +872,8 @@ static const char *unpack(int err_fd)
                keeper[i++] = "--stdin";
                if (fsck_objects)
                        keeper[i++] = "--strict";
-               keeper[i++] = "--fix-thin";
+               if (fix_thin)
+                       keeper[i++] = "--fix-thin";
                keeper[i++] = hdr_arg;
                keeper[i++] = keep_arg;
                keeper[i++] = NULL;
@@ -908,7 +937,7 @@ static void report(struct command *commands, const char *unpack_status)
        if (use_sideband)
                send_sideband(1, 1, buf.buf, buf.len, use_sideband);
        else
-               safe_write(1, buf.buf, buf.len);
+               write_or_die(1, buf.buf, buf.len);
        strbuf_release(&buf);
 }
 
@@ -950,6 +979,10 @@ int cmd_receive_pack(int argc, const char **argv, const char *prefix)
                                stateless_rpc = 1;
                                continue;
                        }
+                       if (!strcmp(arg, "--reject-thin-pack-for-testing")) {
+                               fix_thin = 0;
+                               continue;
+                       }
 
                        usage(receive_pack_usage);
                }