Merge branch 'rs/daemon-plug-child-leak' into maint
"git daemon" uses "run_command()" without "finish_command()", so it
needs to release resources itself, which it forgot to do.
* rs/daemon-plug-child-leak:
daemon: plug memory leak
run-command: factor out child_process_clear()
diff --git a/Documentation/technical/api-run-command.txt b/Documentation/technical/api-run-command.txt
index a9fdb45..8bf3e37 100644
--- a/Documentation/technical/api-run-command.txt
+++ b/Documentation/technical/api-run-command.txt
@@ -46,6 +46,13 @@
The argument dir corresponds the member .dir. The argument env
corresponds to the member .env.
+`child_process_clear`::
+
+ Release the memory associated with the struct child_process.
+ Most users of the run-command API don't need to call this
+ function explicitly because `start_command` invokes it on
+ failure and `finish_command` calls it automatically already.
+
The functions above do the following:
. If a system call failed, errno is set and -1 is returned. A diagnostic
diff --git a/daemon.c b/daemon.c
index f9eb296..77a2f03 100644
--- a/daemon.c
+++ b/daemon.c
@@ -802,6 +802,7 @@
/* remove the child */
*cradle = blanket->next;
live_children--;
+ child_process_clear(&blanket->cld);
free(blanket);
} else
cradle = &blanket->next;
diff --git a/run-command.c b/run-command.c
index e09275b..84e4ce6 100644
--- a/run-command.c
+++ b/run-command.c
@@ -11,6 +11,12 @@
argv_array_init(&child->env_array);
}
+void child_process_clear(struct child_process *child)
+{
+ argv_array_clear(&child->args);
+ argv_array_clear(&child->env_array);
+}
+
struct child_to_clean {
pid_t pid;
struct child_to_clean *next;
@@ -327,8 +333,7 @@
fail_pipe:
error("cannot create %s pipe for %s: %s",
str, cmd->argv[0], strerror(failed_errno));
- argv_array_clear(&cmd->args);
- argv_array_clear(&cmd->env_array);
+ child_process_clear(cmd);
errno = failed_errno;
return -1;
}
@@ -513,8 +518,7 @@
close_pair(fderr);
else if (cmd->err)
close(cmd->err);
- argv_array_clear(&cmd->args);
- argv_array_clear(&cmd->env_array);
+ child_process_clear(cmd);
errno = failed_errno;
return -1;
}
@@ -540,8 +544,7 @@
int finish_command(struct child_process *cmd)
{
int ret = wait_or_whine(cmd->pid, cmd->argv[0], 0);
- argv_array_clear(&cmd->args);
- argv_array_clear(&cmd->env_array);
+ child_process_clear(cmd);
return ret;
}
diff --git a/run-command.h b/run-command.h
index 275d35c..f315868 100644
--- a/run-command.h
+++ b/run-command.h
@@ -47,6 +47,7 @@
#define CHILD_PROCESS_INIT { NULL, ARGV_ARRAY_INIT, ARGV_ARRAY_INIT }
void child_process_init(struct child_process *);
+void child_process_clear(struct child_process *);
int start_command(struct child_process *);
int finish_command(struct child_process *);
