[PATCH] Add ability to specify environment extension to run_command

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There is no way to specify and override for the environment:
there'd be no user for it yet.

Signed-off-by: Alex Riesen <raa.lkml@xxxxxxxxx>
---
 run-command.c |   17 ++++++++++++++++-
 run-command.h |    2 ++
 2 files changed, 18 insertions(+), 1 deletions(-)

diff --git a/run-command.c b/run-command.c
index 043b570..605aa1e 100644
--- a/run-command.c
+++ b/run-command.c
@@ -76,6 +76,10 @@ int start_command(struct child_process *cmd)
 		if (cmd->dir && chdir(cmd->dir))
 			die("exec %s: cd to %s failed (%s)", cmd->argv[0],
 			    cmd->dir, strerror(errno));
+		if (cmd->env) {
+			for (; *cmd->env; cmd->env++)
+				putenv((char*)*cmd->env);
+		}
 		if (cmd->git_cmd) {
 			execv_git_cmd(cmd->argv);
 		} else {
@@ -137,7 +141,8 @@ int run_command(struct child_process *cmd)
 }
 
 static void prepare_run_command_v_opt(struct child_process *cmd,
-				      const char **argv, int opt)
+				      const char **argv,
+				      int opt)
 {
 	memset(cmd, 0, sizeof(*cmd));
 	cmd->argv = argv;
@@ -160,3 +165,13 @@ int run_command_v_opt_cd(const char **argv, int opt, const char *dir)
 	cmd.dir = dir;
 	return run_command(&cmd);
 }
+
+int run_command_v_opt_cd_env(const char **argv, int opt, const char *dir, const char *const *env)
+{
+	struct child_process cmd;
+	prepare_run_command_v_opt(&cmd, argv, opt);
+	cmd.dir = dir;
+	cmd.env = env;
+	return run_command(&cmd);
+}
+
diff --git a/run-command.h b/run-command.h
index cbd7484..af1e0bf 100644
--- a/run-command.h
+++ b/run-command.h
@@ -17,6 +17,7 @@ struct child_process {
 	int in;
 	int out;
 	const char *dir;
+	const char *const *env;
 	unsigned close_in:1;
 	unsigned close_out:1;
 	unsigned no_stdin:1;
@@ -34,5 +35,6 @@ int run_command(struct child_process *);
 #define RUN_COMMAND_STDOUT_TO_STDERR 4
 int run_command_v_opt(const char **argv, int opt);
 int run_command_v_opt_cd(const char **argv, int opt, const char *dir);
+int run_command_v_opt_cd_env(const char **argv, int opt, const char *dir, const char *const *env);
 
 #endif
-- 
1.5.2.51.g16099

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