From 1568fea01eb25a293f8dae570a31ca34d41b5442 Mon Sep 17 00:00:00 2001 From: Alex Riesen Date: Tue, 22 May 2007 23:48:23 +0200 Subject: [PATCH] Add run_command_v_opt_cd: chdir into a directory before exec It can make code simplier (no need to preserve cwd) and safer (no chance the cwd of the current process is accidentally forgotten). Signed-off-by: Alex Riesen Signed-off-by: Junio C Hamano --- run-command.c | 27 ++++++++++++++++++++++----- run-command.h | 2 ++ 2 files changed, 24 insertions(+), 5 deletions(-) diff --git a/run-command.c b/run-command.c index eff523e19..043b5701a 100644 --- a/run-command.c +++ b/run-command.c @@ -73,6 +73,9 @@ int start_command(struct child_process *cmd) close(cmd->out); } + if (cmd->dir && chdir(cmd->dir)) + die("exec %s: cd to %s failed (%s)", cmd->argv[0], + cmd->dir, strerror(errno)); if (cmd->git_cmd) { execv_git_cmd(cmd->argv); } else { @@ -133,13 +136,27 @@ int run_command(struct child_process *cmd) return finish_command(cmd); } +static void prepare_run_command_v_opt(struct child_process *cmd, + const char **argv, int opt) +{ + memset(cmd, 0, sizeof(*cmd)); + cmd->argv = argv; + cmd->no_stdin = opt & RUN_COMMAND_NO_STDIN ? 1 : 0; + cmd->git_cmd = opt & RUN_GIT_CMD ? 1 : 0; + cmd->stdout_to_stderr = opt & RUN_COMMAND_STDOUT_TO_STDERR ? 1 : 0; +} + int run_command_v_opt(const char **argv, int opt) { struct child_process cmd; - memset(&cmd, 0, sizeof(cmd)); - cmd.argv = argv; - cmd.no_stdin = opt & RUN_COMMAND_NO_STDIN ? 1 : 0; - cmd.git_cmd = opt & RUN_GIT_CMD ? 1 : 0; - cmd.stdout_to_stderr = opt & RUN_COMMAND_STDOUT_TO_STDERR ? 1 : 0; + prepare_run_command_v_opt(&cmd, argv, opt); + return run_command(&cmd); +} + +int run_command_v_opt_cd(const char **argv, int opt, const char *dir) +{ + struct child_process cmd; + prepare_run_command_v_opt(&cmd, argv, opt); + cmd.dir = dir; return run_command(&cmd); } diff --git a/run-command.h b/run-command.h index 3680ef9d4..cbd7484a0 100644 --- a/run-command.h +++ b/run-command.h @@ -16,6 +16,7 @@ struct child_process { pid_t pid; int in; int out; + const char *dir; unsigned close_in:1; unsigned close_out:1; unsigned no_stdin:1; @@ -32,5 +33,6 @@ int run_command(struct child_process *); #define RUN_GIT_CMD 2 /*If this is to be git sub-command */ #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); #endif -- 2.26.2