mirror of
https://github.com/git/git.git
synced 2024-11-29 04:54:56 +08:00
e8272fd5fb
Code cleanup. * js/exec-path-coverity-workaround: git_exec_path: do not return the result of getenv() git_exec_path: avoid Coverity warning about unfree()d result
152 lines
3.0 KiB
C
152 lines
3.0 KiB
C
#include "cache.h"
|
|
#include "exec_cmd.h"
|
|
#include "quote.h"
|
|
#include "argv-array.h"
|
|
#define MAX_ARGS 32
|
|
|
|
static const char *argv_exec_path;
|
|
static const char *argv0_path;
|
|
|
|
char *system_path(const char *path)
|
|
{
|
|
#ifdef RUNTIME_PREFIX
|
|
static const char *prefix;
|
|
#else
|
|
static const char *prefix = PREFIX;
|
|
#endif
|
|
struct strbuf d = STRBUF_INIT;
|
|
|
|
if (is_absolute_path(path))
|
|
return xstrdup(path);
|
|
|
|
#ifdef RUNTIME_PREFIX
|
|
assert(argv0_path);
|
|
assert(is_absolute_path(argv0_path));
|
|
|
|
if (!prefix &&
|
|
!(prefix = strip_path_suffix(argv0_path, GIT_EXEC_PATH)) &&
|
|
!(prefix = strip_path_suffix(argv0_path, BINDIR)) &&
|
|
!(prefix = strip_path_suffix(argv0_path, "git"))) {
|
|
prefix = PREFIX;
|
|
trace_printf("RUNTIME_PREFIX requested, "
|
|
"but prefix computation failed. "
|
|
"Using static fallback '%s'.\n", prefix);
|
|
}
|
|
#endif
|
|
|
|
strbuf_addf(&d, "%s/%s", prefix, path);
|
|
return strbuf_detach(&d, NULL);
|
|
}
|
|
|
|
void git_extract_argv0_path(const char *argv0)
|
|
{
|
|
const char *slash;
|
|
|
|
if (!argv0 || !*argv0)
|
|
return;
|
|
|
|
slash = find_last_dir_sep(argv0);
|
|
|
|
if (slash)
|
|
argv0_path = xstrndup(argv0, slash - argv0);
|
|
}
|
|
|
|
void git_set_argv_exec_path(const char *exec_path)
|
|
{
|
|
argv_exec_path = exec_path;
|
|
/*
|
|
* Propagate this setting to external programs.
|
|
*/
|
|
setenv(EXEC_PATH_ENVIRONMENT, exec_path, 1);
|
|
}
|
|
|
|
|
|
/* Returns the highest-priority, location to look for git programs. */
|
|
const char *git_exec_path(void)
|
|
{
|
|
static char *cached_exec_path;
|
|
|
|
if (argv_exec_path)
|
|
return argv_exec_path;
|
|
|
|
if (!cached_exec_path) {
|
|
const char *env = getenv(EXEC_PATH_ENVIRONMENT);
|
|
if (env && *env)
|
|
cached_exec_path = xstrdup(env);
|
|
else
|
|
cached_exec_path = system_path(GIT_EXEC_PATH);
|
|
}
|
|
return cached_exec_path;
|
|
}
|
|
|
|
static void add_path(struct strbuf *out, const char *path)
|
|
{
|
|
if (path && *path) {
|
|
strbuf_add_absolute_path(out, path);
|
|
strbuf_addch(out, PATH_SEP);
|
|
}
|
|
}
|
|
|
|
void setup_path(void)
|
|
{
|
|
const char *old_path = getenv("PATH");
|
|
struct strbuf new_path = STRBUF_INIT;
|
|
|
|
add_path(&new_path, git_exec_path());
|
|
|
|
if (old_path)
|
|
strbuf_addstr(&new_path, old_path);
|
|
else
|
|
strbuf_addstr(&new_path, _PATH_DEFPATH);
|
|
|
|
setenv("PATH", new_path.buf, 1);
|
|
|
|
strbuf_release(&new_path);
|
|
}
|
|
|
|
const char **prepare_git_cmd(struct argv_array *out, const char **argv)
|
|
{
|
|
argv_array_push(out, "git");
|
|
argv_array_pushv(out, argv);
|
|
return out->argv;
|
|
}
|
|
|
|
int execv_git_cmd(const char **argv) {
|
|
struct argv_array nargv = ARGV_ARRAY_INIT;
|
|
|
|
prepare_git_cmd(&nargv, argv);
|
|
trace_argv_printf(nargv.argv, "trace: exec:");
|
|
|
|
/* execvp() can only ever return if it fails */
|
|
sane_execvp("git", (char **)nargv.argv);
|
|
|
|
trace_printf("trace: exec failed: %s\n", strerror(errno));
|
|
|
|
argv_array_clear(&nargv);
|
|
return -1;
|
|
}
|
|
|
|
|
|
int execl_git_cmd(const char *cmd,...)
|
|
{
|
|
int argc;
|
|
const char *argv[MAX_ARGS + 1];
|
|
const char *arg;
|
|
va_list param;
|
|
|
|
va_start(param, cmd);
|
|
argv[0] = cmd;
|
|
argc = 1;
|
|
while (argc < MAX_ARGS) {
|
|
arg = argv[argc++] = va_arg(param, char *);
|
|
if (!arg)
|
|
break;
|
|
}
|
|
va_end(param);
|
|
if (MAX_ARGS <= argc)
|
|
return error("too many args to run %s", cmd);
|
|
|
|
argv[argc] = NULL;
|
|
return execv_git_cmd(argv);
|
|
}
|