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authorJunio C Hamano <gitster@pobox.com>2014-10-24 14:57:53 -0700
committerJunio C Hamano <gitster@pobox.com>2014-10-24 14:57:54 -0700
commit217610d7d61864f24efc0ea837dc911be44fd9c6 (patch)
treeebcbe1cde6d22498c7007a0b3e117e93168378f8
parentf35a02b15d22521c4902d8b3434c7c55eeab4a1d (diff)
parenta915459097b72da9cc058172a54029352b684b0f (diff)
downloadgit-217610d7d61864f24efc0ea837dc911be44fd9c6.tar.gz
Merge branch 'rs/run-command-env-array'
Add managed "env" array to child_process to clarify the lifetime rules. * rs/run-command-env-array: use env_array member of struct child_process run-command: add env_array, an optional argv_array for env
-rw-r--r--Documentation/technical/api-run-command.txt5
-rw-r--r--builtin/receive-pack.c23
-rw-r--r--http-backend.c9
-rw-r--r--pager.c15
-rw-r--r--run-command.c6
-rw-r--r--run-command.h3
-rw-r--r--transport-helper.c10
-rw-r--r--wt-status.c6
8 files changed, 38 insertions, 39 deletions
diff --git a/Documentation/technical/api-run-command.txt b/Documentation/technical/api-run-command.txt
index 842b8389eb..3f12fcdd4c 100644
--- a/Documentation/technical/api-run-command.txt
+++ b/Documentation/technical/api-run-command.txt
@@ -169,6 +169,11 @@ string pointers (NULL terminated) in .env:
. If the string does not contain '=', it names an environment
variable that will be removed from the child process's environment.
+If the .env member is NULL, `start_command` will point it at the
+.env_array `argv_array` (so you may use one or the other, but not both).
+The memory in .env_array will be cleaned up automatically during
+`finish_command` (or during `start_command` when it is unsuccessful).
+
To specify a new initial working directory for the sub-process,
specify it in the .dir member.
diff --git a/builtin/receive-pack.c b/builtin/receive-pack.c
index 916315ff5c..fc0393779c 100644
--- a/builtin/receive-pack.c
+++ b/builtin/receive-pack.c
@@ -453,7 +453,6 @@ leave:
static void prepare_push_cert_sha1(struct child_process *proc)
{
static int already_done;
- struct argv_array env = ARGV_ARRAY_INIT;
if (!push_cert.len)
return;
@@ -487,20 +486,26 @@ static void prepare_push_cert_sha1(struct child_process *proc)
nonce_status = check_nonce(push_cert.buf, bogs);
}
if (!is_null_sha1(push_cert_sha1)) {
- argv_array_pushf(&env, "GIT_PUSH_CERT=%s", sha1_to_hex(push_cert_sha1));
- argv_array_pushf(&env, "GIT_PUSH_CERT_SIGNER=%s",
+ argv_array_pushf(&proc->env_array, "GIT_PUSH_CERT=%s",
+ sha1_to_hex(push_cert_sha1));
+ argv_array_pushf(&proc->env_array, "GIT_PUSH_CERT_SIGNER=%s",
sigcheck.signer ? sigcheck.signer : "");
- argv_array_pushf(&env, "GIT_PUSH_CERT_KEY=%s",
+ argv_array_pushf(&proc->env_array, "GIT_PUSH_CERT_KEY=%s",
sigcheck.key ? sigcheck.key : "");
- argv_array_pushf(&env, "GIT_PUSH_CERT_STATUS=%c", sigcheck.result);
+ argv_array_pushf(&proc->env_array, "GIT_PUSH_CERT_STATUS=%c",
+ sigcheck.result);
if (push_cert_nonce) {
- argv_array_pushf(&env, "GIT_PUSH_CERT_NONCE=%s", push_cert_nonce);
- argv_array_pushf(&env, "GIT_PUSH_CERT_NONCE_STATUS=%s", nonce_status);
+ argv_array_pushf(&proc->env_array,
+ "GIT_PUSH_CERT_NONCE=%s",
+ push_cert_nonce);
+ argv_array_pushf(&proc->env_array,
+ "GIT_PUSH_CERT_NONCE_STATUS=%s",
+ nonce_status);
if (nonce_status == NONCE_SLOP)
- argv_array_pushf(&env, "GIT_PUSH_CERT_NONCE_SLOP=%ld",
+ argv_array_pushf(&proc->env_array,
+ "GIT_PUSH_CERT_NONCE_SLOP=%ld",
nonce_stamp_slop);
}
- proc->env = env.argv;
}
}
diff --git a/http-backend.c b/http-backend.c
index 9977c5d499..b6c0484fb2 100644
--- a/http-backend.c
+++ b/http-backend.c
@@ -314,7 +314,6 @@ static void run_service(const char **argv)
const char *encoding = getenv("HTTP_CONTENT_ENCODING");
const char *user = getenv("REMOTE_USER");
const char *host = getenv("REMOTE_ADDR");
- struct argv_array env = ARGV_ARRAY_INIT;
int gzipped_request = 0;
struct child_process cld = CHILD_PROCESS_INIT;
@@ -329,13 +328,12 @@ static void run_service(const char **argv)
host = "(none)";
if (!getenv("GIT_COMMITTER_NAME"))
- argv_array_pushf(&env, "GIT_COMMITTER_NAME=%s", user);
+ argv_array_pushf(&cld.env_array, "GIT_COMMITTER_NAME=%s", user);
if (!getenv("GIT_COMMITTER_EMAIL"))
- argv_array_pushf(&env, "GIT_COMMITTER_EMAIL=%s@http.%s",
- user, host);
+ argv_array_pushf(&cld.env_array,
+ "GIT_COMMITTER_EMAIL=%s@http.%s", user, host);
cld.argv = argv;
- cld.env = env.argv;
if (gzipped_request)
cld.in = -1;
cld.git_cmd = 1;
@@ -350,7 +348,6 @@ static void run_service(const char **argv)
if (finish_command(&cld))
exit(1);
- argv_array_clear(&env);
}
static int show_text_ref(const char *name, const unsigned char *sha1,
diff --git a/pager.c b/pager.c
index b2b805af98..f6e8c33192 100644
--- a/pager.c
+++ b/pager.c
@@ -74,17 +74,10 @@ void setup_pager(void)
pager_process.use_shell = 1;
pager_process.argv = pager_argv;
pager_process.in = -1;
- if (!getenv("LESS") || !getenv("LV")) {
- static const char *env[3];
- int i = 0;
-
- if (!getenv("LESS"))
- env[i++] = "LESS=FRX";
- if (!getenv("LV"))
- env[i++] = "LV=-c";
- env[i] = NULL;
- pager_process.env = env;
- }
+ if (!getenv("LESS"))
+ argv_array_push(&pager_process.env_array, "LESS=FRX");
+ if (!getenv("LV"))
+ argv_array_push(&pager_process.env_array, "LV=-c");
if (start_command(&pager_process))
return;
diff --git a/run-command.c b/run-command.c
index 761f0fde40..46be513c48 100644
--- a/run-command.c
+++ b/run-command.c
@@ -12,6 +12,7 @@ void child_process_init(struct child_process *child)
{
memset(child, 0, sizeof(*child));
argv_array_init(&child->args);
+ argv_array_init(&child->env_array);
}
struct child_to_clean {
@@ -287,6 +288,8 @@ int start_command(struct child_process *cmd)
if (!cmd->argv)
cmd->argv = cmd->args.argv;
+ if (!cmd->env)
+ cmd->env = cmd->env_array.argv;
/*
* In case of errors we must keep the promise to close FDs
@@ -338,6 +341,7 @@ 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);
errno = failed_errno;
return -1;
}
@@ -524,6 +528,7 @@ fail_pipe:
else if (cmd->err)
close(cmd->err);
argv_array_clear(&cmd->args);
+ argv_array_clear(&cmd->env_array);
errno = failed_errno;
return -1;
}
@@ -550,6 +555,7 @@ int finish_command(struct child_process *cmd)
{
int ret = wait_or_whine(cmd->pid, cmd->argv[0]);
argv_array_clear(&cmd->args);
+ argv_array_clear(&cmd->env_array);
return ret;
}
diff --git a/run-command.h b/run-command.h
index 1b135d1c96..2137315ee4 100644
--- a/run-command.h
+++ b/run-command.h
@@ -10,6 +10,7 @@
struct child_process {
const char **argv;
struct argv_array args;
+ struct argv_array env_array;
pid_t pid;
/*
* Using .in, .out, .err:
@@ -44,7 +45,7 @@ struct child_process {
unsigned clean_on_exit:1;
};
-#define CHILD_PROCESS_INIT { NULL, ARGV_ARRAY_INIT }
+#define CHILD_PROCESS_INIT { NULL, ARGV_ARRAY_INIT, ARGV_ARRAY_INIT }
void child_process_init(struct child_process *);
int start_command(struct child_process *);
diff --git a/transport-helper.c b/transport-helper.c
index 9b2962041b..6cd9dd1f9f 100644
--- a/transport-helper.c
+++ b/transport-helper.c
@@ -108,12 +108,6 @@ static struct child_process *get_helper(struct transport *transport)
int refspec_alloc = 0;
int duped;
int code;
- char git_dir_buf[sizeof(GIT_DIR_ENVIRONMENT) + PATH_MAX + 1];
- const char *helper_env[] = {
- git_dir_buf,
- NULL
- };
-
if (data->helper)
return data->helper;
@@ -129,8 +123,8 @@ static struct child_process *get_helper(struct transport *transport)
helper->git_cmd = 0;
helper->silent_exec_failure = 1;
- snprintf(git_dir_buf, sizeof(git_dir_buf), "%s=%s", GIT_DIR_ENVIRONMENT, get_git_dir());
- helper->env = helper_env;
+ argv_array_pushf(&helper->env_array, "%s=%s", GIT_DIR_ENVIRONMENT,
+ get_git_dir());
code = start_command(helper);
if (code < 0 && errno == ENOENT)
diff --git a/wt-status.c b/wt-status.c
index f367066f92..cdbc8d798a 100644
--- a/wt-status.c
+++ b/wt-status.c
@@ -726,14 +726,14 @@ static void wt_status_print_changed(struct wt_status *s)
static void wt_status_print_submodule_summary(struct wt_status *s, int uncommitted)
{
struct child_process sm_summary = CHILD_PROCESS_INIT;
- struct argv_array env = ARGV_ARRAY_INIT;
struct argv_array argv = ARGV_ARRAY_INIT;
struct strbuf cmd_stdout = STRBUF_INIT;
struct strbuf summary = STRBUF_INIT;
char *summary_content;
size_t len;
- argv_array_pushf(&env, "GIT_INDEX_FILE=%s", s->index_file);
+ argv_array_pushf(&sm_summary.env_array, "GIT_INDEX_FILE=%s",
+ s->index_file);
argv_array_push(&argv, "submodule");
argv_array_push(&argv, "summary");
@@ -745,14 +745,12 @@ static void wt_status_print_submodule_summary(struct wt_status *s, int uncommitt
argv_array_push(&argv, s->amend ? "HEAD^" : "HEAD");
sm_summary.argv = argv.argv;
- sm_summary.env = env.argv;
sm_summary.git_cmd = 1;
sm_summary.no_stdin = 1;
fflush(s->fp);
sm_summary.out = -1;
run_command(&sm_summary);
- argv_array_clear(&env);
argv_array_clear(&argv);
len = strbuf_read(&cmd_stdout, sm_summary.out, 1024);