The setup_tracking function calls install_branch_config, which
may fail writing the configuration due to a locked configuration
file or other error conditions. setup_tracking can also fail when
trying to track ambiguous information for a reference. While this
condition is checked for and an error code is returned, this
error is not checked by the caller.
Fix both issues by dying early when error occur.
Signed-off-by: Patrick Steinhardt <ps@xxxxxx>
---
branch.c | 19 +++++++++----------
branch.h | 1 +
t/t3200-branch.sh | 9 ++++++++-
3 files changed, 18 insertions(+), 11 deletions(-)
diff --git a/branch.c b/branch.c
index 7ff3f20..7106369 100644
--- a/branch.c
+++ b/branch.c
@@ -64,16 +64,16 @@ void install_branch_config(int flag, const char *local, const char *origin, cons
}
strbuf_addf(&key, "branch.%s.remote", local);
- git_config_set(key.buf, origin ? origin : ".");
+ git_config_set_or_die(key.buf, origin ? origin : ".");
strbuf_reset(&key);
strbuf_addf(&key, "branch.%s.merge", local);
- git_config_set(key.buf, remote);
+ git_config_set_or_die(key.buf, remote);
if (rebasing) {
strbuf_reset(&key);
strbuf_addf(&key, "branch.%s.rebase", local);
- git_config_set(key.buf, "true");
+ git_config_set_or_die(key.buf, "true");
}
strbuf_release(&key);
@@ -109,8 +109,8 @@ void install_branch_config(int flag, const char *local, const char *origin, cons
* to infer the settings for branch.<new_ref>.{remote,merge} from the
* config.
*/
-static int setup_tracking(const char *new_ref, const char *orig_ref,
- enum branch_track track, int quiet)
+static void setup_tracking(const char *new_ref, const char *orig_ref,
+ enum branch_track track, int quiet)
{
struct tracking tracking;
int config_flags = quiet ? 0 : BRANCH_CONFIG_VERBOSE;
@@ -118,7 +118,7 @@ static int setup_tracking(const char *new_ref, const char *orig_ref,
memset(&tracking, 0, sizeof(tracking));
tracking.spec.dst = (char *)orig_ref;
if (for_each_remote(find_tracked_branch, &tracking))
- return 1;
+ return;
if (!tracking.matches)
switch (track) {
@@ -127,18 +127,17 @@ static int setup_tracking(const char *new_ref, const char *orig_ref,
case BRANCH_TRACK_OVERRIDE:
break;
default:
- return 1;
+ return;
}
if (tracking.matches > 1)
- return error(_("Not tracking: ambiguous information for ref %s"),
- orig_ref);
+ die(_("Not tracking: ambiguous information for ref %s"),
+ orig_ref);
install_branch_config(config_flags, new_ref, tracking.remote,
tracking.src ? tracking.src : orig_ref);
free(tracking.src);
- return 0;
}
int read_branch_desc(struct strbuf *buf, const char *branch_name)
diff --git a/branch.h b/branch.h
index 58aa45f..8ce22f8 100644
--- a/branch.h
+++ b/branch.h
@@ -43,6 +43,7 @@ void remove_branch_state(void);
/*
* Configure local branch "local" as downstream to branch "remote"
* from remote "origin". Used by git branch --set-upstream.
+ * Dies if unable to install branch config.
*/
#define BRANCH_CONFIG_VERBOSE 01
extern void install_branch_config(int flag, const char *local, const char *origin, const char *remote);
diff --git a/t/t3200-branch.sh b/t/t3200-branch.sh
index cdaf6f6..dd776b3 100755
--- a/t/t3200-branch.sh
+++ b/t/t3200-branch.sh
@@ -446,6 +446,13 @@ test_expect_success '--set-upstream-to fails on a non-ref' '
test_must_fail git branch --set-upstream-to HEAD^{}
'
+test_expect_success '--set-upstream-to fails on locked config' '
+ test_when_finished "rm -f .git/config.lock" &&
+ >.git/config.lock &&
+ git branch locked &&
+ test_must_fail git branch --set-upstream-to locked
+'
+
test_expect_success 'use --set-upstream-to modify HEAD' '
test_config branch.master.remote foo &&
test_config branch.master.merge foo &&
@@ -579,7 +586,7 @@ test_expect_success 'avoid ambiguous track' '
git config remote.ambi1.fetch refs/heads/lalala:refs/heads/master &&
git config remote.ambi2.url lilili &&
git config remote.ambi2.fetch refs/heads/lilili:refs/heads/master &&
- git branch all1 master &&
+ test_must_fail git branch all1 master &&
test -z "$(git config branch.all1.merge)"
'
--
2.7.0
--
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