static char *specifier_user_home(char specifier, void *data, void *userdata) {
Unit *u = userdata;
ExecContext *c;
int r;
const char *username, *home;
assert(u);
c = unit_get_exec_context(u);
/* return HOME if set, otherwise from passwd */
if (!c || !c->user) {
char *h;
r = get_home_dir(&h);
if (r < 0)
return NULL;
return h;
}
username = c->user;
r = get_user_creds(&username, NULL, NULL, &home, NULL);
if (r < 0)
return NULL;
return strdup(home);
}
static char *specifier_user_shell(char specifier, void *data, void *userdata) {
Unit *u = userdata;
ExecContext *c;
int r;
const char *username, *shell;
assert(u);
c = unit_get_exec_context(u);
/* return HOME if set, otherwise from passwd */
if (!c || !c->user) {
char *sh;
r = get_shell(&sh);
if (r < 0)
return strdup("/bin/sh");
return sh;
}
username = c->user;
r = get_user_creds(&username, NULL, NULL, NULL, &shell);
if (r < 0)
return strdup("/bin/sh");
return strdup(shell);
}
static char *specifier_user_shell(char specifier, void *data, void *userdata) {
Unit *u = userdata;
ExecContext *c;
int r;
const char *username, *shell;
char *ret;
assert(u);
c = unit_get_exec_context(u);
if (c && c->user)
username = c->user;
else
username = "******";
/* return /bin/sh for root, otherwise the value from passwd */
r = get_user_creds(&username, NULL, NULL, NULL, &shell);
if (r < 0) {
log_warning_unit(u->id,
"Failed to determine shell: %s",
strerror(-r));
return NULL;
}
if (!path_is_absolute(shell)) {
log_warning_unit(u->id,
"Shell %s is not absolute, ignoring.",
shell);
}
ret = strdup(shell);
if (!ret)
log_oom();
return ret;
}
static char *specifier_user_name(char specifier, void *data, void *userdata) {
Unit *u = userdata;
ExecContext *c;
int r;
const char *username;
_cleanup_free_ char *tmp = NULL;
uid_t uid;
char *printed = NULL;
assert(u);
c = unit_get_exec_context(u);
if (c && c->user)
username = c->user;
else
/* get USER env from env or our own uid */
username = tmp = getusername_malloc();
/* fish username from passwd */
r = get_user_creds(&username, &uid, NULL, NULL, NULL);
if (r < 0)
return NULL;
switch (specifier) {
case 'U':
if (asprintf(&printed, "%d", uid) < 0)
return NULL;
break;
case 'u':
printed = strdup(username);
break;
}
return printed;
}
