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-rw-r--r--builtin/gc.c91
-rwxr-xr-xt/t7900-maintenance.sh17
2 files changed, 87 insertions, 21 deletions
diff --git a/builtin/gc.c b/builtin/gc.c
index f05d2f0a1a..22e670b508 100644
--- a/builtin/gc.c
+++ b/builtin/gc.c
@@ -1600,18 +1600,40 @@ static int launchctl_remove_plists(const char *cmd)
launchctl_remove_plist(SCHEDULE_WEEKLY, cmd);
}
+static int launchctl_list_contains_plist(const char *name, const char *cmd)
+{
+ int result;
+ struct child_process child = CHILD_PROCESS_INIT;
+ char *uid = launchctl_get_uid();
+
+ strvec_split(&child.args, cmd);
+ strvec_pushl(&child.args, "list", name, NULL);
+
+ child.no_stderr = 1;
+ child.no_stdout = 1;
+
+ if (start_command(&child))
+ die(_("failed to start launchctl"));
+
+ result = finish_command(&child);
+
+ free(uid);
+
+ /* Returns failure if 'name' doesn't exist. */
+ return !result;
+}
+
static int launchctl_schedule_plist(const char *exec_path, enum schedule_priority schedule, const char *cmd)
{
- FILE *plist;
- int i;
+ int i, fd;
const char *preamble, *repeat;
const char *frequency = get_frequency(schedule);
char *name = launchctl_service_name(frequency);
char *filename = launchctl_service_filename(name);
-
- if (safe_create_leading_directories(filename))
- die(_("failed to create directories for '%s'"), filename);
- plist = xfopen(filename, "w");
+ struct lock_file lk = LOCK_INIT;
+ static unsigned long lock_file_timeout_ms = ULONG_MAX;
+ struct strbuf plist = STRBUF_INIT, plist2 = STRBUF_INIT;
+ struct stat st;
preamble = "<?xml version=\"1.0\"?>\n"
"<!DOCTYPE plist PUBLIC \"-//Apple//DTD PLIST 1.0//EN\" \"http://www.apple.com/DTDs/PropertyList-1.0.dtd\">\n"
@@ -1630,7 +1652,7 @@ static int launchctl_schedule_plist(const char *exec_path, enum schedule_priorit
"</array>\n"
"<key>StartCalendarInterval</key>\n"
"<array>\n";
- fprintf(plist, preamble, name, exec_path, exec_path, frequency);
+ strbuf_addf(&plist, preamble, name, exec_path, exec_path, frequency);
switch (schedule) {
case SCHEDULE_HOURLY:
@@ -1639,7 +1661,7 @@ static int launchctl_schedule_plist(const char *exec_path, enum schedule_priorit
"<key>Minute</key><integer>0</integer>\n"
"</dict>\n";
for (i = 1; i <= 23; i++)
- fprintf(plist, repeat, i);
+ strbuf_addf(&plist, repeat, i);
break;
case SCHEDULE_DAILY:
@@ -1649,32 +1671,59 @@ static int launchctl_schedule_plist(const char *exec_path, enum schedule_priorit
"<key>Minute</key><integer>0</integer>\n"
"</dict>\n";
for (i = 1; i <= 6; i++)
- fprintf(plist, repeat, i);
+ strbuf_addf(&plist, repeat, i);
break;
case SCHEDULE_WEEKLY:
- fprintf(plist,
- "<dict>\n"
- "<key>Day</key><integer>0</integer>\n"
- "<key>Hour</key><integer>0</integer>\n"
- "<key>Minute</key><integer>0</integer>\n"
- "</dict>\n");
+ strbuf_addstr(&plist,
+ "<dict>\n"
+ "<key>Day</key><integer>0</integer>\n"
+ "<key>Hour</key><integer>0</integer>\n"
+ "<key>Minute</key><integer>0</integer>\n"
+ "</dict>\n");
break;
default:
/* unreachable */
break;
}
- fprintf(plist, "</array>\n</dict>\n</plist>\n");
- fclose(plist);
+ strbuf_addstr(&plist, "</array>\n</dict>\n</plist>\n");
+
+ if (safe_create_leading_directories(filename))
+ die(_("failed to create directories for '%s'"), filename);
+
+ if ((long)lock_file_timeout_ms < 0 &&
+ git_config_get_ulong("gc.launchctlplistlocktimeoutms",
+ &lock_file_timeout_ms))
+ lock_file_timeout_ms = 150;
+
+ fd = hold_lock_file_for_update_timeout(&lk, filename, LOCK_DIE_ON_ERROR,
+ lock_file_timeout_ms);
- /* bootout might fail if not already running, so ignore */
- launchctl_boot_plist(0, filename, cmd);
- if (launchctl_boot_plist(1, filename, cmd))
- die(_("failed to bootstrap service %s"), filename);
+ /*
+ * Does this file already exist? With the intended contents? Is it
+ * registered already? Then it does not need to be re-registered.
+ */
+ if (!stat(filename, &st) && st.st_size == plist.len &&
+ strbuf_read_file(&plist2, filename, plist.len) == plist.len &&
+ !strbuf_cmp(&plist, &plist2) &&
+ launchctl_list_contains_plist(name, cmd))
+ rollback_lock_file(&lk);
+ else {
+ if (write_in_full(fd, plist.buf, plist.len) < 0 ||
+ commit_lock_file(&lk))
+ die_errno(_("could not write '%s'"), filename);
+
+ /* bootout might fail if not already running, so ignore */
+ launchctl_boot_plist(0, filename, cmd);
+ if (launchctl_boot_plist(1, filename, cmd))
+ die(_("failed to bootstrap service %s"), filename);
+ }
free(filename);
free(name);
+ strbuf_release(&plist);
+ strbuf_release(&plist2);
return 0;
}
diff --git a/t/t7900-maintenance.sh b/t/t7900-maintenance.sh
index 58f46c77e6..fc16ac2258 100755
--- a/t/t7900-maintenance.sh
+++ b/t/t7900-maintenance.sh
@@ -582,6 +582,23 @@ test_expect_success 'start and stop macOS maintenance' '
test_line_count = 0 actual
'
+test_expect_success 'use launchctl list to prevent extra work' '
+ # ensure we are registered
+ GIT_TEST_MAINT_SCHEDULER=launchctl:./print-args git maintenance start &&
+
+ # do it again on a fresh args file
+ rm -f args &&
+ GIT_TEST_MAINT_SCHEDULER=launchctl:./print-args git maintenance start &&
+
+ ls "$HOME/Library/LaunchAgents" >actual &&
+ cat >expect <<-\EOF &&
+ list org.git-scm.git.hourly
+ list org.git-scm.git.daily
+ list org.git-scm.git.weekly
+ EOF
+ test_cmp expect args
+'
+
test_expect_success 'start and stop Windows maintenance' '
write_script print-args <<-\EOF &&
echo $* >>args