diff options
Diffstat (limited to 'src/libnm-systemd-shared/src/basic/format-util.h')
| -rw-r--r-- | src/libnm-systemd-shared/src/basic/format-util.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/src/libnm-systemd-shared/src/basic/format-util.h b/src/libnm-systemd-shared/src/basic/format-util.h index 7db8b61d89..8a80eb3339 100644 --- a/src/libnm-systemd-shared/src/basic/format-util.h +++ b/src/libnm-systemd-shared/src/basic/format-util.h @@ -18,6 +18,14 @@ assert_cc(sizeof(uid_t) == sizeof(uint32_t)); assert_cc(sizeof(gid_t) == sizeof(uint32_t)); #define GID_FMT "%" PRIu32 +/* Note: the lifetime of the compound literal is the immediately surrounding block, + * see C11 ยง6.5.2.5, and + * https://stackoverflow.com/questions/34880638/compound-literal-lifetime-and-if-blocks */ +#define FORMAT_UID(uid) \ + snprintf_ok((char[DECIMAL_STR_MAX(uid_t)]){}, DECIMAL_STR_MAX(uid_t), UID_FMT, uid) +#define FORMAT_GID(gid) \ + snprintf_ok((char[DECIMAL_STR_MAX(gid_t)]){}, DECIMAL_STR_MAX(gid_t), GID_FMT, gid) + #if SIZEOF_TIME_T == 8 # define PRI_TIME PRIi64 #elif SIZEOF_TIME_T == 4 |