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user-util: add uid_is_container() for checking whether UID is in container range

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We have similar calls for the dynamic user and system range, let's add
this too here.
This commit is contained in:
Lennart Poettering
2019-12-04 10:59:04 +01:00
parent 6093b2bb05
commit a3292ec8d7
1 changed files with 12 additions and 4 deletions
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src/basic/user-util.h
+12 -4
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@@ -57,6 +57,14 @@ int take_etc_passwd_lock(const char *root);
#define ETC_PASSWD_LOCK_PATH "/etc/.pwd.lock"
static inline bool uid_is_system(uid_t uid) {
return uid <= SYSTEM_UID_MAX;
}
static inline bool gid_is_system(gid_t gid) {
return gid <= SYSTEM_GID_MAX;
}
static inline bool uid_is_dynamic(uid_t uid) {
return DYNAMIC_UID_MIN <= uid && uid <= DYNAMIC_UID_MAX;
}
@@ -65,12 +73,12 @@ static inline bool gid_is_dynamic(gid_t gid) {
return uid_is_dynamic((uid_t) gid);
}
static inline bool uid_is_system(uid_t uid) {
return uid <= SYSTEM_UID_MAX;
static inline bool uid_is_container(uid_t uid) {
return CONTAINER_UID_BASE_MIN <= uid && uid <= CONTAINER_UID_BASE_MAX;
}
static inline bool gid_is_system(gid_t gid) {
return gid <= SYSTEM_GID_MAX;
static inline bool gid_is_container(gid_t gid) {
return uid_is_container((uid_t) gid);
}
/* The following macros add 1 when converting things, since UID 0 is a valid UID, while the pointer