diff options
| -rw-r--r-- | Documentation/config.txt | 7 | ||||
| -rw-r--r-- | builtin/receive-pack.c | 93 | ||||
| -rwxr-xr-x | t/t5516-fetch-push.sh | 104 |
3 files changed, 202 insertions, 2 deletions
diff --git a/Documentation/config.txt b/Documentation/config.txt index b563ea8d34..ac781a44d7 100644 --- a/Documentation/config.txt +++ b/Documentation/config.txt @@ -2144,6 +2144,13 @@ receive.denyCurrentBranch:: print a warning of such a push to stderr, but allow the push to proceed. If set to false or "ignore", allow such pushes with no message. Defaults to "refuse". ++ +Another option is "updateInstead" which will update the working +directory (must be clean) if pushing into the current branch. This option is +intended for synchronizing working directories when one side is not easily +accessible via interactive ssh (e.g. a live web site, hence the requirement +that the working directory be clean). This mode also comes in handy when +developing inside a VM to test and fix code on different Operating Systems. receive.denyNonFastForwards:: If set to true, git-receive-pack will deny a ref update which is diff --git a/builtin/receive-pack.c b/builtin/receive-pack.c index 1eefaddac8..8266c1fccf 100644 --- a/builtin/receive-pack.c +++ b/builtin/receive-pack.c @@ -26,7 +26,8 @@ enum deny_action { DENY_UNCONFIGURED, DENY_IGNORE, DENY_WARN, - DENY_REFUSE + DENY_REFUSE, + DENY_UPDATE_INSTEAD }; static int deny_deletes; @@ -76,6 +77,8 @@ static enum deny_action parse_deny_action(const char *var, const char *value) return DENY_WARN; if (!strcasecmp(value, "refuse")) return DENY_REFUSE; + if (!strcasecmp(value, "updateinstead")) + return DENY_UPDATE_INSTEAD; } if (git_config_bool(var, value)) return DENY_REFUSE; @@ -730,11 +733,89 @@ static int update_shallow_ref(struct command *cmd, struct shallow_info *si) return 0; } +static const char *update_worktree(unsigned char *sha1) +{ + const char *update_refresh[] = { + "update-index", "-q", "--ignore-submodules", "--refresh", NULL + }; + const char *diff_files[] = { + "diff-files", "--quiet", "--ignore-submodules", "--", NULL + }; + const char *diff_index[] = { + "diff-index", "--quiet", "--cached", "--ignore-submodules", + "HEAD", "--", NULL + }; + const char *read_tree[] = { + "read-tree", "-u", "-m", NULL, NULL + }; + const char *work_tree = git_work_tree_cfg ? git_work_tree_cfg : ".."; + struct argv_array env = ARGV_ARRAY_INIT; + struct child_process child = CHILD_PROCESS_INIT; + + if (is_bare_repository()) + return "denyCurrentBranch = updateInstead needs a worktree"; + + argv_array_pushf(&env, "GIT_DIR=%s", absolute_path(get_git_dir())); + + child.argv = update_refresh; + child.env = env.argv; + child.dir = work_tree; + child.no_stdin = 1; + child.stdout_to_stderr = 1; + child.git_cmd = 1; + if (run_command(&child)) { + argv_array_clear(&env); + return "Up-to-date check failed"; + } + + /* run_command() does not clean up completely; reinitialize */ + child_process_init(&child); + child.argv = diff_files; + child.env = env.argv; + child.dir = work_tree; + child.no_stdin = 1; + child.stdout_to_stderr = 1; + child.git_cmd = 1; + if (run_command(&child)) { + argv_array_clear(&env); + return "Working directory has unstaged changes"; + } + + child_process_init(&child); + child.argv = diff_index; + child.env = env.argv; + child.no_stdin = 1; + child.no_stdout = 1; + child.stdout_to_stderr = 0; + child.git_cmd = 1; + if (run_command(&child)) { + argv_array_clear(&env); + return "Working directory has staged changes"; + } + + read_tree[3] = sha1_to_hex(sha1); + child_process_init(&child); + child.argv = read_tree; + child.env = env.argv; + child.dir = work_tree; + child.no_stdin = 1; + child.no_stdout = 1; + child.stdout_to_stderr = 0; + child.git_cmd = 1; + if (run_command(&child)) { + argv_array_clear(&env); + return "Could not update working tree to new HEAD"; + } + + argv_array_clear(&env); + return NULL; +} + static const char *update(struct command *cmd, struct shallow_info *si) { const char *name = cmd->ref_name; struct strbuf namespaced_name_buf = STRBUF_INIT; - const char *namespaced_name; + const char *namespaced_name, *ret; unsigned char *old_sha1 = cmd->old_sha1; unsigned char *new_sha1 = cmd->new_sha1; @@ -760,6 +841,11 @@ static const char *update(struct command *cmd, struct shallow_info *si) if (deny_current_branch == DENY_UNCONFIGURED) refuse_unconfigured_deny(); return "branch is currently checked out"; + case DENY_UPDATE_INSTEAD: + ret = update_worktree(new_sha1); + if (ret) + return ret; + break; } } @@ -784,10 +870,13 @@ static const char *update(struct command *cmd, struct shallow_info *si) break; case DENY_REFUSE: case DENY_UNCONFIGURED: + case DENY_UPDATE_INSTEAD: if (deny_delete_current == DENY_UNCONFIGURED) refuse_unconfigured_deny_delete_current(); rp_error("refusing to delete the current branch: %s", name); return "deletion of the current branch prohibited"; + default: + return "Invalid denyDeleteCurrent setting"; } } } diff --git a/t/t5516-fetch-push.sh b/t/t5516-fetch-push.sh index f4da20aa9b..85c7fecd22 100755 --- a/t/t5516-fetch-push.sh +++ b/t/t5516-fetch-push.sh @@ -1330,4 +1330,108 @@ test_expect_success 'fetch into bare respects core.logallrefupdates' ' ) ' +test_expect_success 'receive.denyCurrentBranch = updateInstead' ' + git push testrepo master && + ( + cd testrepo && + git reset --hard && + git config receive.denyCurrentBranch updateInstead + ) && + test_commit third path2 && + + # Try pushing into a repository with pristine working tree + git push testrepo master && + ( + cd testrepo && + git update-index -q --refresh && + git diff-files --quiet -- && + git diff-index --quiet --cached HEAD -- && + test third = "$(cat path2)" && + test $(git -C .. rev-parse HEAD) = $(git rev-parse HEAD) + ) && + + # Try pushing into a repository with working tree needing a refresh + ( + cd testrepo && + git reset --hard HEAD^ && + test $(git -C .. rev-parse HEAD^) = $(git rev-parse HEAD) && + test-chmtime +100 path1 + ) && + git push testrepo master && + ( + cd testrepo && + git update-index -q --refresh && + git diff-files --quiet -- && + git diff-index --quiet --cached HEAD -- && + test_cmp ../path1 path1 && + test third = "$(cat path2)" && + test $(git -C .. rev-parse HEAD) = $(git rev-parse HEAD) + ) && + + # Update what is to be pushed + test_commit fourth path2 && + + # Try pushing into a repository with a dirty working tree + # (1) the working tree updated + ( + cd testrepo && + echo changed >path1 + ) && + test_must_fail git push testrepo master && + ( + cd testrepo && + test $(git -C .. rev-parse HEAD^) = $(git rev-parse HEAD) && + git diff --quiet --cached && + test changed = "$(cat path1)" + ) && + + # (2) the index updated + ( + cd testrepo && + echo changed >path1 && + git add path1 + ) && + test_must_fail git push testrepo master && + ( + cd testrepo && + test $(git -C .. rev-parse HEAD^) = $(git rev-parse HEAD) && + git diff --quiet && + test changed = "$(cat path1)" + ) && + + # Introduce a new file in the update + test_commit fifth path3 && + + # (3) the working tree has an untracked file that would interfere + ( + cd testrepo && + git reset --hard && + echo changed >path3 + ) && + test_must_fail git push testrepo master && + ( + cd testrepo && + test $(git -C .. rev-parse HEAD^^) = $(git rev-parse HEAD) && + git diff --quiet && + git diff --quiet --cached && + test changed = "$(cat path3)" + ) && + + # (4) the target changes to what gets pushed but it still is a change + ( + cd testrepo && + git reset --hard && + echo fifth >path3 && + git add path3 + ) && + test_must_fail git push testrepo master && + ( + cd testrepo && + test $(git -C .. rev-parse HEAD^^) = $(git rev-parse HEAD) && + git diff --quiet && + test fifth = "$(cat path3)" + ) + +' + test_done |