diff options
| -rw-r--r-- | Documentation/git-rm.txt | 15 | ||||
| -rw-r--r-- | builtin/rm.c | 125 | ||||
| -rw-r--r-- | submodule.c | 80 | ||||
| -rw-r--r-- | submodule.h | 2 | ||||
| -rwxr-xr-x | t/t3600-rm.sh | 343 |
5 files changed, 550 insertions, 15 deletions
diff --git a/Documentation/git-rm.txt b/Documentation/git-rm.txt index 5d31860eb1..882cb1171b 100644 --- a/Documentation/git-rm.txt +++ b/Documentation/git-rm.txt @@ -107,6 +107,21 @@ as well as modifications of existing paths. Typically you would first remove all tracked files from the working tree using this command: +Submodules +~~~~~~~~~~ +Only submodules using a gitfile (which means they were cloned +with a git version 1.7.8 or newer) will be removed from the work +tree, as their repository lives inside the .git directory of the +superproject. If a submodule (or one of those nested inside it) +still uses a .git directory, `git rm` will fail - no matter if forced +or not - to protect the submodule's history. + +A submodule is considered up-to-date when the HEAD is the same as +recorded in the index, no tracked files are modified and no untracked +files that aren't ignored are present in the submodules work tree. +Ignored files are deemed expendable and won't stop a submodule's work +tree from being removed. + ---------------- git ls-files -z | xargs -0 rm -f ---------------- diff --git a/builtin/rm.c b/builtin/rm.c index b384c4c3cf..2aea3b5653 100644 --- a/builtin/rm.c +++ b/builtin/rm.c @@ -9,6 +9,7 @@ #include "cache-tree.h" #include "tree-walk.h" #include "parse-options.h" +#include "submodule.h" static const char * const builtin_rm_usage[] = { N_("git rm [options] [--] <file>..."), @@ -17,9 +18,58 @@ static const char * const builtin_rm_usage[] = { static struct { int nr, alloc; - const char **name; + struct { + const char *name; + char is_submodule; + } *entry; } list; +static int get_ours_cache_pos(const char *path, int pos) +{ + int i = -pos - 1; + + while ((i < active_nr) && !strcmp(active_cache[i]->name, path)) { + if (ce_stage(active_cache[i]) == 2) + return i; + i++; + } + return -1; +} + +static int check_submodules_use_gitfiles(void) +{ + int i; + int errs = 0; + + for (i = 0; i < list.nr; i++) { + const char *name = list.entry[i].name; + int pos; + struct cache_entry *ce; + struct stat st; + + pos = cache_name_pos(name, strlen(name)); + if (pos < 0) { + pos = get_ours_cache_pos(name, pos); + if (pos < 0) + continue; + } + ce = active_cache[pos]; + + if (!S_ISGITLINK(ce->ce_mode) || + (lstat(ce->name, &st) < 0) || + is_empty_dir(name)) + continue; + + if (!submodule_uses_gitfile(name)) + errs = error(_("submodule '%s' (or one of its nested " + "submodules) uses a .git directory\n" + "(use 'rm -rf' if you really want to remove " + "it including all of its history)"), name); + } + + return errs; +} + static int check_local_mod(unsigned char *head, int index_only) { /* @@ -37,15 +87,26 @@ static int check_local_mod(unsigned char *head, int index_only) struct stat st; int pos; struct cache_entry *ce; - const char *name = list.name[i]; + const char *name = list.entry[i].name; unsigned char sha1[20]; unsigned mode; int local_changes = 0; int staged_changes = 0; pos = cache_name_pos(name, strlen(name)); - if (pos < 0) - continue; /* removing unmerged entry */ + if (pos < 0) { + /* + * Skip unmerged entries except for populated submodules + * that could lose history when removed. + */ + pos = get_ours_cache_pos(name, pos); + if (pos < 0) + continue; + + if (!S_ISGITLINK(active_cache[pos]->ce_mode) || + is_empty_dir(name)) + continue; + } ce = active_cache[pos]; if (lstat(ce->name, &st) < 0) { @@ -58,9 +119,10 @@ static int check_local_mod(unsigned char *head, int index_only) /* if a file was removed and it is now a * directory, that is the same as ENOENT as * far as git is concerned; we do not track - * directories. + * directories unless they are submodules. */ - continue; + if (!S_ISGITLINK(ce->ce_mode)) + continue; } /* @@ -80,8 +142,11 @@ static int check_local_mod(unsigned char *head, int index_only) /* * Is the index different from the file in the work tree? + * If it's a submodule, is its work tree modified? */ - if (ce_match_stat(ce, &st, 0)) + if (ce_match_stat(ce, &st, 0) || + (S_ISGITLINK(ce->ce_mode) && + !ok_to_remove_submodule(ce->name))) local_changes = 1; /* @@ -115,10 +180,18 @@ static int check_local_mod(unsigned char *head, int index_only) errs = error(_("'%s' has changes staged in the index\n" "(use --cached to keep the file, " "or -f to force removal)"), name); - if (local_changes) - errs = error(_("'%s' has local modifications\n" - "(use --cached to keep the file, " - "or -f to force removal)"), name); + if (local_changes) { + if (S_ISGITLINK(ce->ce_mode) && + !submodule_uses_gitfile(name)) { + errs = error(_("submodule '%s' (or one of its nested " + "submodules) uses a .git directory\n" + "(use 'rm -rf' if you really want to remove " + "it including all of its history)"), name); + } else + errs = error(_("'%s' has local modifications\n" + "(use --cached to keep the file, " + "or -f to force removal)"), name); + } } } return errs; @@ -173,8 +246,9 @@ int cmd_rm(int argc, const char **argv, const char *prefix) struct cache_entry *ce = active_cache[i]; if (!match_pathspec(pathspec, ce->name, ce_namelen(ce), 0, seen)) continue; - ALLOC_GROW(list.name, list.nr + 1, list.alloc); - list.name[list.nr++] = ce->name; + ALLOC_GROW(list.entry, list.nr + 1, list.alloc); + list.entry[list.nr].name = ce->name; + list.entry[list.nr++].is_submodule = S_ISGITLINK(ce->ce_mode); } if (pathspec) { @@ -215,6 +289,9 @@ int cmd_rm(int argc, const char **argv, const char *prefix) hashclr(sha1); if (check_local_mod(sha1, index_only)) exit(1); + } else if (!index_only) { + if (check_submodules_use_gitfiles()) + exit(1); } /* @@ -222,7 +299,7 @@ int cmd_rm(int argc, const char **argv, const char *prefix) * the index unless all of them succeed. */ for (i = 0; i < list.nr; i++) { - const char *path = list.name[i]; + const char *path = list.entry[i].name; if (!quiet) printf("rm '%s'\n", path); @@ -244,7 +321,25 @@ int cmd_rm(int argc, const char **argv, const char *prefix) if (!index_only) { int removed = 0; for (i = 0; i < list.nr; i++) { - const char *path = list.name[i]; + const char *path = list.entry[i].name; + if (list.entry[i].is_submodule) { + if (is_empty_dir(path)) { + if (!rmdir(path)) { + removed = 1; + continue; + } + } else { + struct strbuf buf = STRBUF_INIT; + strbuf_addstr(&buf, path); + if (!remove_dir_recursively(&buf, 0)) { + removed = 1; + strbuf_release(&buf); + continue; + } + strbuf_release(&buf); + /* Fallthrough and let remove_path() fail. */ + } + } if (!remove_path(path)) { removed = 1; continue; diff --git a/submodule.c b/submodule.c index 50f213e926..e3e0b455ea 100644 --- a/submodule.c +++ b/submodule.c @@ -759,6 +759,86 @@ unsigned is_submodule_modified(const char *path, int ignore_untracked) return dirty_submodule; } +int submodule_uses_gitfile(const char *path) +{ + struct child_process cp; + const char *argv[] = { + "submodule", + "foreach", + "--quiet", + "--recursive", + "test -f .git", + NULL, + }; + struct strbuf buf = STRBUF_INIT; + const char *git_dir; + + strbuf_addf(&buf, "%s/.git", path); + git_dir = read_gitfile(buf.buf); + if (!git_dir) { + strbuf_release(&buf); + return 0; + } + strbuf_release(&buf); + + /* Now test that all nested submodules use a gitfile too */ + memset(&cp, 0, sizeof(cp)); + cp.argv = argv; + cp.env = local_repo_env; + cp.git_cmd = 1; + cp.no_stdin = 1; + cp.no_stderr = 1; + cp.no_stdout = 1; + cp.dir = path; + if (run_command(&cp)) + return 0; + + return 1; +} + +int ok_to_remove_submodule(const char *path) +{ + struct stat st; + ssize_t len; + struct child_process cp; + const char *argv[] = { + "status", + "--porcelain", + "-u", + "--ignore-submodules=none", + NULL, + }; + struct strbuf buf = STRBUF_INIT; + int ok_to_remove = 1; + + if ((lstat(path, &st) < 0) || is_empty_dir(path)) + return 1; + + if (!submodule_uses_gitfile(path)) + return 0; + + memset(&cp, 0, sizeof(cp)); + cp.argv = argv; + cp.env = local_repo_env; + cp.git_cmd = 1; + cp.no_stdin = 1; + cp.out = -1; + cp.dir = path; + if (start_command(&cp)) + die("Could not run 'git status --porcelain -uall --ignore-submodules=none' in submodule %s", path); + + len = strbuf_read(&buf, cp.out, 1024); + if (len > 2) + ok_to_remove = 0; + close(cp.out); + + if (finish_command(&cp)) + die("'git status --porcelain -uall --ignore-submodules=none' failed in submodule %s", path); + + strbuf_release(&buf); + return ok_to_remove; +} + static int find_first_merges(struct object_array *result, const char *path, struct commit *a, struct commit *b) { diff --git a/submodule.h b/submodule.h index 594b50d510..f2e8271fc6 100644 --- a/submodule.h +++ b/submodule.h @@ -28,6 +28,8 @@ int fetch_populated_submodules(const struct argv_array *options, const char *prefix, int command_line_option, int quiet); unsigned is_submodule_modified(const char *path, int ignore_untracked); +int submodule_uses_gitfile(const char *path); +int ok_to_remove_submodule(const char *path); int merge_submodule(unsigned char result[20], const char *path, const unsigned char base[20], const unsigned char a[20], const unsigned char b[20], int search); int find_unpushed_submodules(unsigned char new_sha1[20], const char *remotes_name, diff --git a/t/t3600-rm.sh b/t/t3600-rm.sh index 9fd28bcf34..97254e8d33 100755 --- a/t/t3600-rm.sh +++ b/t/t3600-rm.sh @@ -262,4 +262,347 @@ test_expect_success 'rm removes subdirectories recursively' ' ! test -d dir ' +cat >expect <<EOF +D submod +EOF + +cat >expect.modified <<EOF + M submod +EOF + +test_expect_success 'rm removes empty submodules from work tree' ' + mkdir submod && + git update-index --add --cacheinfo 160000 $(git rev-parse HEAD) submod && + git config -f .gitmodules submodule.sub.url ./. && + git config -f .gitmodules submodule.sub.path submod && + git submodule init && + git add .gitmodules && + git commit -m "add submodule" && + git rm submod && + test ! -e submod && + git status -s -uno --ignore-submodules=none > actual && + test_cmp expect actual +' + +test_expect_success 'rm removes removed submodule from index' ' + git reset --hard && + git submodule update && + rm -rf submod && + git rm submod && + git status -s -uno --ignore-submodules=none > actual && + test_cmp expect actual +' + +test_expect_success 'rm removes work tree of unmodified submodules' ' + git reset --hard && + git submodule update && + git rm submod && + test ! -d submod && + git status -s -uno --ignore-submodules=none > actual && + test_cmp expect actual +' + +test_expect_success 'rm of a populated submodule with different HEAD fails unless forced' ' + git reset --hard && + git submodule update && + (cd submod && + git checkout HEAD^ + ) && + test_must_fail git rm submod && + test -d submod && + test -f submod/.git && + git status -s -uno --ignore-submodules=none > actual && + test_cmp expect.modified actual && + git rm -f submod && + test ! -d submod && + git status -s -uno --ignore-submodules=none > actual && + test_cmp expect actual +' + +test_expect_success 'rm of a populated submodule with modifications fails unless forced' ' + git reset --hard && + git submodule update && + (cd submod && + echo X >empty + ) && + test_must_fail git rm submod && + test -d submod && + test -f submod/.git && + git status -s -uno --ignore-submodules=none > actual && + test_cmp expect.modified actual && + git rm -f submod && + test ! -d submod && + git status -s -uno --ignore-submodules=none > actual && + test_cmp expect actual +' + +test_expect_success 'rm of a populated submodule with untracked files fails unless forced' ' + git reset --hard && + git submodule update && + (cd submod && + echo X >untracked + ) && + test_must_fail git rm submod && + test -d submod && + test -f submod/.git && + git status -s -uno --ignore-submodules=none > actual && + test_cmp expect.modified actual && + git rm -f submod && + test ! -d submod && + git status -s -uno --ignore-submodules=none > actual && + test_cmp expect actual +' + +test_expect_success 'setup submodule conflict' ' + git reset --hard && + git submodule update && + git checkout -b branch1 && + echo 1 >nitfol && + git add nitfol && + git commit -m "added nitfol 1" && + git checkout -b branch2 master && + echo 2 >nitfol && + git add nitfol && + git commit -m "added nitfol 2" && + git checkout -b conflict1 master && + (cd submod && + git fetch && + git checkout branch1 + ) && + git add submod && + git commit -m "submod 1" && + git checkout -b conflict2 master && + (cd submod && + git checkout branch2 + ) && + git add submod && + git commit -m "submod 2" +' + +cat >expect.conflict <<EOF +UU submod +EOF + +test_expect_success 'rm removes work tree of unmodified conflicted submodule' ' + git checkout conflict1 && + git reset --hard && + git submodule update && + test_must_fail git merge conflict2 && + git rm submod && + test ! -d submod && + git status -s -uno --ignore-submodules=none > actual && + test_cmp expect actual +' + +test_expect_success 'rm of a conflicted populated submodule with different HEAD fails unless forced' ' + git checkout conflict1 && + git reset --hard && + git submodule update && + (cd submod && + git checkout HEAD^ + ) && + test_must_fail git merge conflict2 && + test_must_fail git rm submod && + test -d submod && + test -f submod/.git && + git status -s -uno --ignore-submodules=none > actual && + test_cmp expect.conflict actual && + git rm -f submod && + test ! -d submod && + git status -s -uno --ignore-submodules=none > actual && + test_cmp expect actual +' + +test_expect_success 'rm of a conflicted populated submodule with modifications fails unless forced' ' + git checkout conflict1 && + git reset --hard && + git submodule update && + (cd submod && + echo X >empty + ) && + test_must_fail git merge conflict2 && + test_must_fail git rm submod && + test -d submod && + test -f submod/.git && + git status -s -uno --ignore-submodules=none > actual && + test_cmp expect.conflict actual && + git rm -f submod && + test ! -d submod && + git status -s -uno --ignore-submodules=none > actual && + test_cmp expect actual +' + +test_expect_success 'rm of a conflicted populated submodule with untracked files fails unless forced' ' + git checkout conflict1 && + git reset --hard && + git submodule update && + (cd submod && + echo X >untracked + ) && + test_must_fail git merge conflict2 && + test_must_fail git rm submod && + test -d submod && + test -f submod/.git && + git status -s -uno --ignore-submodules=none > actual && + test_cmp expect.conflict actual && + git rm -f submod && + test ! -d submod && + git status -s -uno --ignore-submodules=none > actual && + test_cmp expect actual +' + +test_expect_success 'rm of a conflicted populated submodule with a .git directory fails even when forced' ' + git checkout conflict1 && + git reset --hard && + git submodule update && + (cd submod && + rm .git && + cp -a ../.git/modules/sub .git && + GIT_WORK_TREE=. git config --unset core.worktree + ) && + test_must_fail git merge conflict2 && + test_must_fail git rm submod && + test -d submod && + test -d submod/.git && + git status -s -uno --ignore-submodules=none > actual && + test_cmp expect.conflict actual && + test_must_fail git rm -f submod && + test -d submod && + test -d submod/.git && + git status -s -uno --ignore-submodules=none > actual && + test_cmp expect.conflict actual && + git merge --abort && + rm -rf submod +' + +test_expect_success 'rm of a conflicted unpopulated submodule succeeds' ' + git checkout conflict1 && + git reset --hard && + test_must_fail git merge conflict2 && + git rm submod && + test ! -d submod && + git status -s -uno --ignore-submodules=none > actual && + test_cmp expect actual +' + +test_expect_success 'rm of a populated submodule with a .git directory fails even when forced' ' + git checkout -f master && + git reset --hard && + git submodule update && + (cd submod && + rm .git && + cp -a ../.git/modules/sub .git && + GIT_WORK_TREE=. git config --unset core.worktree + ) && + test_must_fail git rm submod && + test -d submod && + test -d submod/.git && + git status -s -uno --ignore-submodules=none > actual && + ! test -s actual && + test_must_fail git rm -f submod && + test -d submod && + test -d submod/.git && + git status -s -uno --ignore-submodules=none > actual && + ! test -s actual && + rm -rf submod +' + +cat >expect.deepmodified <<EOF + M submod/subsubmod +EOF + +test_expect_success 'setup subsubmodule' ' + git reset --hard && + git submodule update && + (cd submod && + git update-index --add --cacheinfo 160000 $(git rev-parse HEAD) subsubmod && + git config -f .gitmodules submodule.sub.url ../. && + git config -f .gitmodules submodule.sub.path subsubmod && + git submodule init && + git add .gitmodules && + git commit -m "add subsubmodule" && + git submodule update subsubmod + ) && + git commit -a -m "added deep submodule" +' + +test_expect_success 'rm recursively removes work tree of unmodified submodules' ' + git rm submod && + test ! -d submod && + git status -s -uno --ignore-submodules=none > actual && + test_cmp expect actual +' + +test_expect_success 'rm of a populated nested submodule with different nested HEAD fails unless forced' ' + git reset --hard && + git submodule update --recursive && + (cd submod/subsubmod && + git checkout HEAD^ + ) && + test_must_fail git rm submod && + test -d submod && + test -f submod/.git && + git status -s -uno --ignore-submodules=none > actual && + test_cmp expect.modified actual && + git rm -f submod && + test ! -d submod && + git status -s -uno --ignore-submodules=none > actual && + test_cmp expect actual +' + +test_expect_success 'rm of a populated nested submodule with nested modifications fails unless forced' ' + git reset --hard && + git submodule update --recursive && + (cd submod/subsubmod && + echo X >empty + ) && + test_must_fail git rm submod && + test -d submod && + test -f submod/.git && + git status -s -uno --ignore-submodules=none > actual && + test_cmp expect.modified actual && + git rm -f submod && + test ! -d submod && + git status -s -uno --ignore-submodules=none > actual && + test_cmp expect actual +' + +test_expect_success 'rm of a populated nested submodule with nested untracked files fails unless forced' ' + git reset --hard && + git submodule update --recursive && + (cd submod/subsubmod && + echo X >untracked + ) && + test_must_fail git rm submod && + test -d submod && + test -f submod/.git && + git status -s -uno --ignore-submodules=none > actual && + test_cmp expect.modified actual && + git rm -f submod && + test ! -d submod && + git status -s -uno --ignore-submodules=none > actual && + test_cmp expect actual +' + +test_expect_success 'rm of a populated nested submodule with a nested .git directory fails even when forced' ' + git reset --hard && + git submodule update --recursive && + (cd submod/subsubmod && + rm .git && + cp -a ../../.git/modules/sub/modules/sub .git && + GIT_WORK_TREE=. git config --unset core.worktree + ) && + test_must_fail git rm submod && + test -d submod && + test -d submod/subsubmod/.git && + git status -s -uno --ignore-submodules=none > actual && + ! test -s actual && + test_must_fail git rm -f submod && + test -d submod && + test -d submod/subsubmod/.git && + git status -s -uno --ignore-submodules=none > actual && + ! test -s actual && + rm -rf submod +' + test_done |