diff options
Diffstat (limited to 'src/shared')
| -rw-r--r-- | src/shared/cgroup-util.c | 80 | ||||
| -rw-r--r-- | src/shared/cgroup-util.h | 1 |
2 files changed, 48 insertions, 33 deletions
diff --git a/src/shared/cgroup-util.c b/src/shared/cgroup-util.c index 43c415d760..7af0c3c124 100644 --- a/src/shared/cgroup-util.c +++ b/src/shared/cgroup-util.c @@ -58,25 +58,6 @@ int cg_enumerate_processes(const char *controller, const char *path, FILE **_f) return 0; } -int cg_enumerate_tasks(const char *controller, const char *path, FILE **_f) { - _cleanup_free_ char *fs = NULL; - FILE *f; - int r; - - assert(_f); - - r = cg_get_path(controller, path, "tasks", &fs); - if (r < 0) - return r; - - f = fopen(fs, "re"); - if (!f) - return -errno; - - *_f = f; - return 0; -} - int cg_read_pid(FILE *f, pid_t *_pid) { unsigned long ul; @@ -159,16 +140,28 @@ int cg_rmdir(const char *controller, const char *path, bool honour_sticky) { return r; if (honour_sticky) { - char *tasks; + char *fn; - /* If the sticky bit is set don't remove the directory */ + /* If the sticky bit is set on cgroup.procs, don't + * remove the directory */ - tasks = strappend(p, "/tasks"); - if (!tasks) + fn = strappend(p, "/cgroup.procs"); + if (!fn) return -ENOMEM; - r = file_is_priv_sticky(tasks); - free(tasks); + r = file_is_priv_sticky(fn); + free(fn); + + if (r > 0) + return 0; + + /* Compatibility ... */ + fn = strappend(p, "/tasks"); + if (!fn) + return -ENOMEM; + + r = file_is_priv_sticky(fn); + free(fn); if (r > 0) return 0; @@ -365,7 +358,7 @@ int cg_migrate(const char *cfrom, const char *pfrom, const char *cto, const char pid_t pid = 0; done = true; - r = cg_enumerate_tasks(cfrom, pfrom, &f); + r = cg_enumerate_processes(cfrom, pfrom, &f); if (r < 0) { if (ret >= 0 && r != -ENOENT) return r; @@ -573,6 +566,19 @@ static int trim_cb(const char *path, const struct stat *sb, int typeflag, struct if (ftwbuf->level < 1) return 0; + p = strappend(path, "/cgroup.procs"); + if (!p) { + errno = ENOMEM; + return 1; + } + + is_sticky = file_is_priv_sticky(p) > 0; + free(p); + + if (is_sticky) + return 0; + + /* Compatibility */ p = strappend(path, "/tasks"); if (!p) { errno = ENOMEM; @@ -607,13 +613,22 @@ int cg_trim(const char *controller, const char *path, bool delete_root) { bool is_sticky; char *p; - p = strappend(fs, "/tasks"); + p = strappend(fs, "/cgroup.procs"); if (!p) return -ENOMEM; is_sticky = file_is_priv_sticky(p) > 0; free(p); + if (!is_sticky) { + p = strappend(fs, "/tasks"); + if (!p) + return -ENOMEM; + + is_sticky = file_is_priv_sticky(p) > 0; + free(p); + } + if (!is_sticky) if (rmdir(fs) < 0 && errno != ENOENT && r == 0) return -errno; @@ -644,7 +659,7 @@ int cg_attach(const char *controller, const char *path, pid_t pid) { assert(path); assert(pid >= 0); - r = cg_get_path_and_check(controller, path, "tasks", &fs); + r = cg_get_path_and_check(controller, path, "cgroup.procs", &fs); if (r < 0) return r; @@ -697,7 +712,7 @@ int cg_set_task_access( if (mode != (mode_t) -1) mode &= 0666; - r = cg_get_path(controller, path, "tasks", &fs); + r = cg_get_path(controller, path, "cgroup.procs", &fs); if (r < 0) return r; @@ -727,8 +742,9 @@ int cg_set_task_access( if (r < 0) return r; - /* Always keep values for "cgroup.procs" in sync with "tasks" */ - r = cg_get_path(controller, path, "cgroup.procs", &procs); + /* Compatibility, Always keep values for "tasks" in sync with + * "cgroup.procs" */ + r = cg_get_path(controller, path, "tasks", &procs); if (r < 0) return r; @@ -869,7 +885,7 @@ int cg_is_empty(const char *controller, const char *path, bool ignore_self) { assert(path); - r = cg_enumerate_tasks(controller, path, &f); + r = cg_enumerate_processes(controller, path, &f); if (r < 0) return r == -ENOENT ? 1 : r; diff --git a/src/shared/cgroup-util.h b/src/shared/cgroup-util.h index 25dd277ba5..5835e04075 100644 --- a/src/shared/cgroup-util.h +++ b/src/shared/cgroup-util.h @@ -44,7 +44,6 @@ */ int cg_enumerate_processes(const char *controller, const char *path, FILE **_f); -int cg_enumerate_tasks(const char *controller, const char *path, FILE **_f); int cg_read_pid(FILE *f, pid_t *_pid); int cg_enumerate_subgroups(const char *controller, const char *path, DIR **_d); |