static void execv_dashed_external(const char **argv)
{
char *cmd;
const char *tmp;
int status;
if (asprintf(&cmd, "perf-%s", argv[0]) < 0)
goto do_die;
/*
* argv[0] must be the perf command, but the argv array
* belongs to the caller, and may be reused in
* subsequent loop iterations. Save argv[0] and
* restore it on error.
*/
tmp = argv[0];
argv[0] = cmd;
/*
* if we fail because the command is not found, it is
* OK to return. Otherwise, we just pass along the status code.
*/
status = run_command_v_opt(argv, 0);
if (status != -ERR_RUN_COMMAND_EXEC) {
if (IS_RUN_COMMAND_ERR(status)) {
do_die:
die("unable to run '%s'", argv[0]);
}
exit(-status);
}
errno = ENOENT; /* as if we called execvp */
argv[0] = tmp;
zfree(&cmd);
}
static void execv_dashed_external(const char **argv)
{
struct strbuf cmd = STRBUF_INIT;
const char *tmp;
int status;
strbuf_addf(&cmd, "perf-%s", argv[0]);
tmp = argv[0];
argv[0] = cmd.buf;
status = run_command_v_opt(argv, 0);
if (status != -ERR_RUN_COMMAND_EXEC) {
if (IS_RUN_COMMAND_ERR(status))
die("unable to run '%s'", argv[0]);
exit(-status);
}
errno = ENOENT;
argv[0] = tmp;
strbuf_release(&cmd);
}