Disallow working directory commands in a bare repository.

If the user tries to run a porcelainish command which requires
a working directory in a bare repository they may get unexpected
results which are difficult to predict and may differ from command
to command.

Instead we should detect that the current repository is a bare
repository and refuse to run the command there, as there is no
working directory associated with it.

[jc: updated Shawn's original somewhat -- bugs are mine.]

Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>

diff --git a/git-am.sh b/git-am.sh
index 7c0bb6084b332db7f7b6b9058db4d92b828730f0..f50de61049d039f939956dc4a8c0b502dc1d70e5 100755 (executable)
--- a/git-am.sh
+++ b/git-am.sh
@@ -7,6 +7,7 @@ USAGE='[--signoff] [--dotest=<dir>] [--utf8] [--binary] [--3way]
   or, when resuming [--skip | --resolved]'
 . git-sh-setup
 set_reflog_action am
+require_work_tree
 
 git var GIT_COMMITTER_IDENT >/dev/null || exit
 

diff --git a/git-checkout.sh b/git-checkout.sh
index 92ec069a3acacc2d12c2c709311969f3d0aa4153..a5649a0504f3d5b25fe800e85c0b3eb122368289 100755 (executable)
--- a/git-checkout.sh
+++ b/git-checkout.sh
@@ -3,6 +3,7 @@
 USAGE='[-f] [-b <new_branch>] [-m] [<branch>] [<paths>...]'
 SUBDIRECTORY_OK=Sometimes
 . git-sh-setup
+require_work_tree
 
 old_name=HEAD
 old=$(git-rev-parse --verify $old_name 2>/dev/null)

diff --git a/git-clean.sh b/git-clean.sh
index 071b974f496b8deff3a2d1b869c35d4f556dc17f..db177a7886b6407b4c4ad7b778a1ae99471355ac 100755 (executable)
--- a/git-clean.sh
+++ b/git-clean.sh
@@ -14,6 +14,7 @@ When optional <paths>... arguments are given, the paths
 affected are further limited to those that match them.'
 SUBDIRECTORY_OK=Yes
 . git-sh-setup
+require_work_tree
 
 ignored=
 ignoredonly=

diff --git a/git-commit.sh b/git-commit.sh
index 04aad5e5da6fad46bc71c859286615c2f6ce11ab..557b90355cdbaf108f0e339d61f7bf076cc7942d 100755 (executable)
--- a/git-commit.sh
+++ b/git-commit.sh
@@ -6,6 +6,7 @@
 USAGE='[-a] [-s] [-v] [--no-verify] [-m <message> | -F <logfile> | (-C|-c) <commit>] [-u] [--amend] [-e] [--author <author>] [[-i | -o] <path>...]'
 SUBDIRECTORY_OK=Yes
 . git-sh-setup
+require_work_tree
 
 git-rev-parse --verify HEAD >/dev/null 2>&1 || initial_commit=t
 

diff --git a/git-merge.sh b/git-merge.sh
index 477002910ede7f6bc6bcb9a79f6ddebd248f6bd2..3eef048efc7a848145697e205d154c92f8c7ec0f 100755 (executable)
--- a/git-merge.sh
+++ b/git-merge.sh
@@ -7,6 +7,7 @@ USAGE='[-n] [--no-commit] [--squash] [-s <strategy>] [-m=<merge-message>] <commi
 
 . git-sh-setup
 set_reflog_action "merge $*"
+require_work_tree
 
 test -z "$(git ls-files -u)" ||
        die "You are in a middle of conflicted merge."

diff --git a/git-pull.sh b/git-pull.sh
index c184fb81a4dab622d79120bcc986c3bf2b07df7f..e9826fc4cec14d82171f495af25324b24fe9f19b 100755 (executable)
--- a/git-pull.sh
+++ b/git-pull.sh
@@ -8,6 +8,7 @@ USAGE='[-n | --no-summary] [--no-commit] [-s strategy]... [<fetch-options>] <rep
 LONG_USAGE='Fetch one or more remote refs and merge it/them into the current HEAD.'
 . git-sh-setup
 set_reflog_action "pull $*"
+require_work_tree
 
 test -z "$(git ls-files -u)" ||
        die "You are in a middle of conflicted merge."

diff --git a/git-rebase.sh b/git-rebase.sh
index 828c59ce61a8317f23ba9113e4de6e09a58e70ce..98f9558145f269e05e121006a5853368f0572abf 100755 (executable)
--- a/git-rebase.sh
+++ b/git-rebase.sh
@@ -29,6 +29,7 @@ Example:       git-rebase master~1 topic
 '
 . git-sh-setup
 set_reflog_action rebase
+require_work_tree
 
 RESOLVEMSG="
 When you have resolved this problem run \"git rebase --continue\".

diff --git a/git-reset.sh b/git-reset.sh
index 76c8a818d421c796141fae3835e1cb4726d23ef3..b9045bc762471b462c3c99a5357b4b30421ea49f 100755 (executable)
--- a/git-reset.sh
+++ b/git-reset.sh
@@ -6,6 +6,7 @@ USAGE='[--mixed | --soft | --hard]  [<commit-ish>] [ [--] <paths>...]'
 SUBDIRECTORY_OK=Yes
 . git-sh-setup
 set_reflog_action "reset $*"
+require_work_tree
 
 update= reset_type=--mixed
 unset rev

diff --git a/git-revert.sh b/git-revert.sh
index 50cc47b0634201e7acaaa0a0642be779aaf7c2da..f9843c7c8ec4c3ae7e796fec801425e85dc1c73d 100755 (executable)
--- a/git-revert.sh
+++ b/git-revert.sh
@@ -19,6 +19,7 @@ case "$0" in
        die "What are you talking about?" ;;
 esac
 . git-sh-setup
+require_work_tree
 
 no_commit=
 while case "$#" in 0) break ;; esac

diff --git a/git-sh-setup.sh b/git-sh-setup.sh
index 7fdc912167ae25568ffe95132936323abbdba09e..4a02b3825ecc15cb289a1dadb328e39a1869f3f1 100755 (executable)
--- a/git-sh-setup.sh
+++ b/git-sh-setup.sh
@@ -36,6 +36,11 @@ is_bare_repository () {
        esac
 }
 
+require_work_tree () {
+       test $(is_bare_repository) = false ||
+       die "fatal: $0 cannot be used without a working tree."
+}
+
 if [ -z "$LONG_USAGE" ]
 then
        LONG_USAGE="Usage: $0 $USAGE"

diff --git a/git.c b/git.c
index bf55499dc3d555dfaa853b0c6e4aec5439c3532e..692773b9aec2c68db6ae485b60bbc74a961f2cc9 100644 (file)
--- a/git.c
+++ b/git.c
@@ -199,6 +199,11 @@ const char git_version_string[] = GIT_VERSION;
 
 #define RUN_SETUP      (1<<0)
 #define USE_PAGER      (1<<1)
+/*
+ * require working tree to be present -- anything uses this needs
+ * RUN_SETUP for reading from the configuration file.
+ */
+#define NOT_BARE       (1<<2)
 
 static void handle_internal_command(int argc, const char **argv, char **envp)
 {
@@ -208,7 +213,7 @@ static void handle_internal_command(int argc, const char **argv, char **envp)
                int (*fn)(int, const char **, const char *);
                int option;
        } commands[] = {
-               { "add", cmd_add, RUN_SETUP },
+               { "add", cmd_add, RUN_SETUP | NOT_BARE },
                { "annotate", cmd_annotate, },
                { "apply", cmd_apply },
                { "archive", cmd_archive },
@@ -239,7 +244,7 @@ static void handle_internal_command(int argc, const char **argv, char **envp)
                { "mailinfo", cmd_mailinfo },
                { "mailsplit", cmd_mailsplit },
                { "merge-file", cmd_merge_file },
-               { "mv", cmd_mv, RUN_SETUP },
+               { "mv", cmd_mv, RUN_SETUP | NOT_BARE },
                { "name-rev", cmd_name_rev, RUN_SETUP },
                { "pack-objects", cmd_pack_objects, RUN_SETUP },
                { "pickaxe", cmd_blame, RUN_SETUP | USE_PAGER },
@@ -252,8 +257,8 @@ static void handle_internal_command(int argc, const char **argv, char **envp)
                { "rerere", cmd_rerere, RUN_SETUP },
                { "rev-list", cmd_rev_list, RUN_SETUP },
                { "rev-parse", cmd_rev_parse, RUN_SETUP },
-               { "rm", cmd_rm, RUN_SETUP },
-               { "runstatus", cmd_runstatus, RUN_SETUP },
+               { "rm", cmd_rm, RUN_SETUP | NOT_BARE },
+               { "runstatus", cmd_runstatus, RUN_SETUP | NOT_BARE },
                { "shortlog", cmd_shortlog, RUN_SETUP | USE_PAGER },
                { "show-branch", cmd_show_branch, RUN_SETUP },
                { "show", cmd_show, RUN_SETUP | USE_PAGER },
@@ -290,6 +295,8 @@ static void handle_internal_command(int argc, const char **argv, char **envp)
                        prefix = setup_git_directory();
                if (p->option & USE_PAGER)
                        setup_pager();
+               if ((p->option & NOT_BARE) && is_bare_repository())
+                       die("%s cannot be used in a bare git directory", cmd);
                trace_argv_printf(argv, argc, "trace: built-in: git");
 
                exit(p->fn(argc, argv, prefix));