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basic/cgroup-util: modernize cg_split_spec()

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Those cryptic one letter variable names, yuck!
This commit is contained in:
Zbigniew Jędrzejewski-Szmek 2020-03-10 10:50:27 +01:00
parent b35e9974fa
commit 2a8020fe9d
2 changed files with 40 additions and 64 deletions
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102
src/basic/cgroup-util.c
View File

@ -878,9 +878,8 @@ int cg_is_empty_recursive(const char *controller, const char *path) {
}
}
int cg_split_spec(const char *spec, char **controller, char **path) {
char *t = NULL, *u = NULL;
const char *e;
int cg_split_spec(const char *spec, char **ret_controller, char **ret_path) {
_cleanup_free_ char *controller = NULL, *path = NULL;
assert(spec);
@ -888,76 +887,53 @@ int cg_split_spec(const char *spec, char **controller, char **path) {
if (!path_is_normalized(spec))
return -EINVAL;
if (path) {
t = strdup(spec);
if (!t)
if (ret_path) {
path = strdup(spec);
if (!path)
return -ENOMEM;
*path = path_simplify(t, false);
path_simplify(path, false);
}
if (controller)
*controller = NULL;
} else {
const char *e;
return 0;
}
e = strchr(spec, ':');
if (!e) {
if (!cg_controller_is_valid(spec))
return -EINVAL;
if (controller) {
t = strdup(spec);
if (!t)
e = strchr(spec, ':');
if (e) {
controller = strndup(spec, e-spec);
if (!controller)
return -ENOMEM;
if (!cg_controller_is_valid(controller))
return -EINVAL;
*controller = t;
if (!isempty(e + 1)) {
path = strdup(e+1);
if (!path)
return -ENOMEM;
if (!path_is_normalized(path) ||
!path_is_absolute(path))
return -EINVAL;
path_simplify(path, false);
}
} else {
if (!cg_controller_is_valid(spec))
return -EINVAL;
if (ret_controller) {
controller = strdup(spec);
if (!controller)
return -ENOMEM;
}
}
if (path)
*path = NULL;
return 0;
}
t = strndup(spec, e-spec);
if (!t)
return -ENOMEM;
if (!cg_controller_is_valid(t)) {
free(t);
return -EINVAL;
}
if (isempty(e+1))
u = NULL;
else {
u = strdup(e+1);
if (!u) {
free(t);
return -ENOMEM;
}
if (!path_is_normalized(u) ||
!path_is_absolute(u)) {
free(t);
free(u);
return -EINVAL;
}
path_simplify(u, false);
}
if (controller)
*controller = t;
else
free(t);
if (path)
*path = u;
else
free(u);
if (ret_controller)
*ret_controller = TAKE_PTR(controller);
if (ret_path)
*ret_path = TAKE_PTR(path);
return 0;
}

2
src/basic/cgroup-util.h
View File

@ -170,7 +170,7 @@ typedef int (*cg_kill_log_func_t)(pid_t pid, int sig, void *userdata);
int cg_kill(const char *controller, const char *path, int sig, CGroupFlags flags, Set *s, cg_kill_log_func_t kill_log, void *userdata);
int cg_kill_recursive(const char *controller, const char *path, int sig, CGroupFlags flags, Set *s, cg_kill_log_func_t kill_log, void *userdata);
int cg_split_spec(const char *spec, char **controller, char **path);
int cg_split_spec(const char *spec, char **ret_controller, char **ret_path);
int cg_mangle_path(const char *path, char **result);
int cg_get_path(const char *controller, const char *path, const char *suffix, char **fs);