diff options
| -rw-r--r-- | Documentation/hooks.txt | 7 | ||||
| -rw-r--r-- | builtin-gc.c | 31 | ||||
| -rw-r--r-- | contrib/hooks/pre-auto-gc-battery | 36 |
3 files changed, 74 insertions, 0 deletions
diff --git a/Documentation/hooks.txt b/Documentation/hooks.txt index 76b8d77460..44fbe58f20 100644 --- a/Documentation/hooks.txt +++ b/Documentation/hooks.txt @@ -276,3 +276,10 @@ probably enable this hook. Both standard output and standard error output are forwarded to `git-send-pack` on the other end, so you can simply `echo` messages for the user. + +pre-auto-gc +----------- + +This hook is invoked by `git-gc --auto`. It takes no parameter, and +exiting with non-zero status from this script causes the `git-gc --auto` +to abort. diff --git a/builtin-gc.c b/builtin-gc.c index 8cef36f6a4..f99ebc7926 100644 --- a/builtin-gc.c +++ b/builtin-gc.c @@ -157,6 +157,34 @@ static int too_many_packs(void) return gc_auto_pack_limit <= cnt; } +static int run_hook(void) +{ + const char *argv[2]; + struct child_process hook; + int ret; + + argv[0] = git_path("hooks/pre-auto-gc"); + argv[1] = NULL; + + if (access(argv[0], X_OK) < 0) + return 0; + + memset(&hook, 0, sizeof(hook)); + hook.argv = argv; + hook.no_stdin = 1; + hook.stdout_to_stderr = 1; + + ret = start_command(&hook); + if (ret) { + warning("Could not spawn %s", argv[0]); + return ret; + } + ret = finish_command(&hook); + if (ret == -ERR_RUN_COMMAND_WAITPID_SIGNAL) + warning("%s exited due to uncaught signal", argv[0]); + return ret; +} + static int need_to_gc(void) { /* @@ -176,6 +204,9 @@ static int need_to_gc(void) append_option(argv_repack, "-A", MAX_ADD); else if (!too_many_loose_objects()) return 0; + + if (run_hook()) + return 0; return 1; } diff --git a/contrib/hooks/pre-auto-gc-battery b/contrib/hooks/pre-auto-gc-battery new file mode 100644 index 0000000000..0096f57b7e --- /dev/null +++ b/contrib/hooks/pre-auto-gc-battery @@ -0,0 +1,36 @@ +#!/bin/sh +# +# An example hook script to verify if you are on battery, in case you +# are running Linux. Called by git-gc --auto with no arguments. The hook +# should exit with non-zero status after issuing an appropriate message +# if it wants to stop the auto repacking. +# +# This hook is stored in the contrib/hooks directory. Your distribution +# may have put this somewhere else. If you want to use this hook, you +# should make this script executable then link to it in the repository +# you would like to use it in. +# +# For example, if the hook is stored in +# /usr/share/git-core/contrib/hooks/pre-auto-gc-battery: +# +# chmod a+x pre-auto-gc-battery +# cd /path/to/your/repository.git +# ln -sf /usr/share/git-core/contrib/hooks/pre-auto-gc-battery \ +# hooks/pre-auto-gc + +if test -x /sbin/on_ac_power && /sbin/on_ac_power +then + exit 0 +elif test "$(cat /sys/class/power_supply/AC/online 2>/dev/null)" = 1 +then + exit 0 +elif grep -q 'on-line' /proc/acpi/ac_adapter/AC/state 2>/dev/null +then + exit 0 +elif grep -q '0x01$' /proc/apm 2>/dev/null +then + exit 0 +fi + +echo "Auto packing deferred; not on AC" +exit 1 |