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authorJunio C Hamano <gitster@pobox.com>2014-12-22 20:27:01 (GMT)
committerJunio C Hamano <gitster@pobox.com>2014-12-22 20:27:01 (GMT)
commit6bcaff1a4fe4a3088348e706c149941c74d1ad61 (patch)
treea03cc8a4a3b8fa2cdf06bdbed93ee8a1aac2692d
parent5109f2aaabcd7ce2c493bb663417c2dd4d5b81fe (diff)
parent59362e560d3c439e77768983b00eade08be9bc3e (diff)
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Merge branch 'jc/exec-cmd-system-path-leak-fix'
The function sometimes returned a non-freeable memory and some other times returned a piece of memory that must be freed. * jc/exec-cmd-system-path-leak-fix: system_path(): always return free'able memory to the caller
-rw-r--r--builtin/help.c9
-rw-r--r--builtin/init-db.c15
-rw-r--r--exec_cmd.c7
-rw-r--r--exec_cmd.h2
4 files changed, 21 insertions, 12 deletions
diff --git a/builtin/help.c b/builtin/help.c
index b3c818e..e78c135 100644
--- a/builtin/help.c
+++ b/builtin/help.c
@@ -321,16 +321,18 @@ static void setup_man_path(void)
{
struct strbuf new_path = STRBUF_INIT;
const char *old_path = getenv("MANPATH");
+ char *git_man_path = system_path(GIT_MAN_PATH);
/* We should always put ':' after our path. If there is no
* old_path, the ':' at the end will let 'man' to try
* system-wide paths after ours to find the manual page. If
* there is old_path, we need ':' as delimiter. */
- strbuf_addstr(&new_path, system_path(GIT_MAN_PATH));
+ strbuf_addstr(&new_path, git_man_path);
strbuf_addch(&new_path, ':');
if (old_path)
strbuf_addstr(&new_path, old_path);
+ free(git_man_path);
setenv("MANPATH", new_path.buf, 1);
strbuf_release(&new_path);
@@ -380,8 +382,10 @@ static void show_info_page(const char *git_cmd)
static void get_html_page_path(struct strbuf *page_path, const char *page)
{
struct stat st;
+ char *to_free = NULL;
+
if (!html_path)
- html_path = system_path(GIT_HTML_PATH);
+ html_path = to_free = system_path(GIT_HTML_PATH);
/* Check that we have a git documentation directory. */
if (!strstr(html_path, "://")) {
@@ -392,6 +396,7 @@ static void get_html_page_path(struct strbuf *page_path, const char *page)
strbuf_init(page_path, 0);
strbuf_addf(page_path, "%s/%s.html", html_path, page);
+ free(to_free);
}
/*
diff --git a/builtin/init-db.c b/builtin/init-db.c
index 2619ca5..9966522 100644
--- a/builtin/init-db.c
+++ b/builtin/init-db.c
@@ -119,15 +119,18 @@ static void copy_templates(const char *template_dir)
DIR *dir;
const char *git_dir = get_git_dir();
int len = strlen(git_dir);
+ char *to_free = NULL;
if (!template_dir)
template_dir = getenv(TEMPLATE_DIR_ENVIRONMENT);
if (!template_dir)
template_dir = init_db_template_dir;
if (!template_dir)
- template_dir = system_path(DEFAULT_GIT_TEMPLATE_DIR);
- if (!template_dir[0])
+ template_dir = to_free = system_path(DEFAULT_GIT_TEMPLATE_DIR);
+ if (!template_dir[0]) {
+ free(to_free);
return;
+ }
template_len = strlen(template_dir);
if (PATH_MAX <= (template_len+strlen("/config")))
die(_("insanely long template path %s"), template_dir);
@@ -139,7 +142,7 @@ static void copy_templates(const char *template_dir)
dir = opendir(template_path);
if (!dir) {
warning(_("templates not found %s"), template_dir);
- return;
+ goto free_return;
}
/* Make sure that template is from the correct vintage */
@@ -155,8 +158,7 @@ static void copy_templates(const char *template_dir)
"a wrong format version %d from '%s'"),
repository_format_version,
template_dir);
- closedir(dir);
- return;
+ goto close_free_return;
}
memcpy(path, git_dir, len);
@@ -166,7 +168,10 @@ static void copy_templates(const char *template_dir)
copy_templates_1(path, len,
template_path, template_len,
dir);
+close_free_return:
closedir(dir);
+free_return:
+ free(to_free);
}
static int git_init_db_config(const char *k, const char *v, void *cb)
diff --git a/exec_cmd.c b/exec_cmd.c
index 698e752..8ab37b5 100644
--- a/exec_cmd.c
+++ b/exec_cmd.c
@@ -6,7 +6,7 @@
static const char *argv_exec_path;
static const char *argv0_path;
-const char *system_path(const char *path)
+char *system_path(const char *path)
{
#ifdef RUNTIME_PREFIX
static const char *prefix;
@@ -16,7 +16,7 @@ const char *system_path(const char *path)
struct strbuf d = STRBUF_INIT;
if (is_absolute_path(path))
- return path;
+ return xstrdup(path);
#ifdef RUNTIME_PREFIX
assert(argv0_path);
@@ -34,8 +34,7 @@ const char *system_path(const char *path)
#endif
strbuf_addf(&d, "%s/%s", prefix, path);
- path = strbuf_detach(&d, NULL);
- return path;
+ return strbuf_detach(&d, NULL);
}
const char *git_extract_argv0_path(const char *argv0)
diff --git a/exec_cmd.h b/exec_cmd.h
index e4c9702..93b0c02 100644
--- a/exec_cmd.h
+++ b/exec_cmd.h
@@ -9,6 +9,6 @@ extern const char **prepare_git_cmd(const char **argv);
extern int execv_git_cmd(const char **argv); /* NULL terminated */
LAST_ARG_MUST_BE_NULL
extern int execl_git_cmd(const char *cmd, ...);
-extern const char *system_path(const char *path);
+extern char *system_path(const char *path);
#endif /* GIT_EXEC_CMD_H */