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Small cleanup

This commit is contained in:
Zbigniew Jędrzejewski-Szmek 2013-04-23 08:28:10 -04:00
parent 90ae6c0b82
commit a6b26d9011
2 changed files with 28 additions and 69 deletions
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15
src/core/main.c
View File

@ -522,9 +522,6 @@ static void strv_free_free(char ***l) {
}
static void free_join_controllers(void) {
if (!arg_join_controllers)
return;
strv_free_free(arg_join_controllers);
arg_join_controllers = NULL;
}
@ -1219,14 +1216,14 @@ static int initialize_join_controllers(void) {
return -ENOMEM;
arg_join_controllers[0] = strv_new("cpu", "cpuacct", NULL);
if (!arg_join_controllers[0])
return -ENOMEM;
arg_join_controllers[1] = strv_new("net_cls", "net_prio", NULL);
if (!arg_join_controllers[1])
return -ENOMEM;
arg_join_controllers[2] = NULL;
if (!arg_join_controllers[0] || !arg_join_controllers[1]) {
free_join_controllers();
return -ENOMEM;
}
return 0;
}

82
src/core/mount-setup.c
View File

@ -211,9 +211,9 @@ int mount_setup_early(void) {
int mount_cgroup_controllers(char ***join_controllers) {
int r;
FILE *f;
char buf[LINE_MAX];
Set *controllers;
_cleanup_set_free_free_ Set *controllers = NULL;
_cleanup_fclose_ FILE *f;
/* Mount all available cgroup controllers that are built into the kernel. */
@ -224,10 +224,8 @@ int mount_cgroup_controllers(char ***join_controllers) {
}
controllers = set_new(string_hash_func, string_compare_func);
if (!controllers) {
r = log_oom();
goto finish;
}
if (!controllers)
return log_oom();
/* Ignore the header line */
(void) fgets(buf, sizeof(buf), f);
@ -242,8 +240,7 @@ int mount_cgroup_controllers(char ***join_controllers) {
break;
log_error("Failed to parse /proc/cgroups.");
r = -EIO;
goto finish;
return -EIO;
}
if (!enabled) {
@ -254,14 +251,19 @@ int mount_cgroup_controllers(char ***join_controllers) {
r = set_consume(controllers, controller);
if (r < 0) {
log_error("Failed to add controller to set.");
goto finish;
return r;
}
}
for (;;) {
MountPoint p;
char *controller, *where, *options;
MountPoint p = {
.what = "cgroup",
.type = "cgroup",
.flags = MS_NOSUID|MS_NOEXEC|MS_NODEV,
.mode = MNT_IN_CONTAINER,
};
char ***k = NULL;
_cleanup_free_ char *options = NULL, *controller;
controller = set_steal_first(controllers);
if (!controller)
@ -278,14 +280,13 @@ int mount_cgroup_controllers(char ***join_controllers) {
for (i = *k, j = *k; *i; i++) {
if (!streq(*i, controller)) {
char *t;
char _cleanup_free_ *t;
t = set_remove(controllers, *i);
if (!t) {
free(*i);
continue;
}
free(t);
}
*(j++) = *i;
@ -294,75 +295,36 @@ int mount_cgroup_controllers(char ***join_controllers) {
*j = NULL;
options = strv_join(*k, ",");
if (!options) {
free(controller);
r = log_oom();
goto finish;
}
if (!options)
return log_oom();
} else {
options = controller;
controller = NULL;
}
where = strappend("/sys/fs/cgroup/", options);
if (!where) {
free(options);
r = log_oom();
goto finish;
}
zero(p);
p.what = "cgroup";
p.where = where;
p.type = "cgroup";
p.where = strappenda("/sys/fs/cgroup/", options);
p.options = options;
p.flags = MS_NOSUID|MS_NOEXEC|MS_NODEV;
p.mode = MNT_IN_CONTAINER;
r = mount_one(&p, true);
free(controller);
free(where);
if (r < 0) {
free(options);
goto finish;
}
if (r < 0)
return r;
if (r > 0 && k && *k) {
char **i;
for (i = *k; *i; i++) {
_cleanup_free_ char *t;
t = strappend("/sys/fs/cgroup/", *i);
if (!t) {
r = log_oom();
free(options);
goto finish;
}
char *t = strappenda("/sys/fs/cgroup/", *i);
r = symlink(options, t);
if (r < 0 && errno != EEXIST) {
log_error("Failed to create symlink %s: %m", t);
r = -errno;
free(options);
goto finish;
return -errno;
}
}
}
free(options);
}
r = 0;
finish:
set_free_free(controllers);
fclose(f);
return r;
return 0;
}
static int nftw_cb(