/* SPDX-License-Identifier: LGPL-2.1-or-later */ #pragma once #include #include #include #include "cgroup-util.h" #include "macro.h" assert_cc(sizeof(pid_t) == sizeof(int32_t)); #define PID_PRI PRIi32 #define PID_FMT "%" PID_PRI assert_cc(sizeof(uid_t) == sizeof(uint32_t)); #define UID_FMT "%" PRIu32 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 §6.5.2.5, 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 # define PRI_TIME "li" #else # error Unknown time_t size #endif #if SIZEOF_TIMEX_MEMBER == 8 # define PRI_TIMEX PRIi64 #elif SIZEOF_TIMEX_MEMBER == 4 # define PRI_TIMEX "li" #else # error Unknown timex member size #endif #if SIZEOF_RLIM_T == 8 # define RLIM_FMT "%" PRIu64 #elif SIZEOF_RLIM_T == 4 # define RLIM_FMT "%" PRIu32 #else # error Unknown rlim_t size #endif #if SIZEOF_DEV_T == 8 # define DEV_FMT "%" PRIu64 #elif SIZEOF_DEV_T == 4 # define DEV_FMT "%" PRIu32 #else # error Unknown dev_t size #endif #if SIZEOF_INO_T == 8 # define INO_FMT "%" PRIu64 #elif SIZEOF_INO_T == 4 # define INO_FMT "%" PRIu32 #else # error Unknown ino_t size #endif typedef enum { FORMAT_IFNAME_IFINDEX = 1 << 0, FORMAT_IFNAME_IFINDEX_WITH_PERCENT = (1 << 1) | FORMAT_IFNAME_IFINDEX, } FormatIfnameFlag; int format_ifname_full(int ifindex, FormatIfnameFlag flag, char buf[static IF_NAMESIZE]); int format_ifname_full_alloc(int ifindex, FormatIfnameFlag flag, char **ret); static inline int format_ifname(int ifindex, char buf[static IF_NAMESIZE]) { return format_ifname_full(ifindex, 0, buf); } static inline int format_ifname_alloc(int ifindex, char **ret) { return format_ifname_full_alloc(ifindex, 0, ret); } static inline char *_format_ifname_full(int ifindex, FormatIfnameFlag flag, char buf[static IF_NAMESIZE]) { (void) format_ifname_full(ifindex, flag, buf); return buf; } #define FORMAT_IFNAME_FULL(index, flag) _format_ifname_full(index, flag, (char[IF_NAMESIZE]){}) #define FORMAT_IFNAME(index) _format_ifname_full(index, 0, (char[IF_NAMESIZE]){}) typedef enum { FORMAT_BYTES_USE_IEC = 1 << 0, FORMAT_BYTES_BELOW_POINT = 1 << 1, FORMAT_BYTES_TRAILING_B = 1 << 2, } FormatBytesFlag; #define FORMAT_BYTES_MAX 16U char *format_bytes_full(char *buf, size_t l, uint64_t t, FormatBytesFlag flag) _warn_unused_result_; _warn_unused_result_ static inline char *format_bytes(char *buf, size_t l, uint64_t t) { return format_bytes_full(buf, l, t, FORMAT_BYTES_USE_IEC | FORMAT_BYTES_BELOW_POINT | FORMAT_BYTES_TRAILING_B); } /* Note: the lifetime of the compound literal is the immediately surrounding block, * see C11 §6.5.2.5, and * https://stackoverflow.com/questions/34880638/compound-literal-lifetime-and-if-blocks */ #define FORMAT_BYTES(t) format_bytes((char[FORMAT_BYTES_MAX]){}, FORMAT_BYTES_MAX, t) #define FORMAT_BYTES_FULL(t, flag) format_bytes_full((char[FORMAT_BYTES_MAX]){}, FORMAT_BYTES_MAX, t, flag) #define FORMAT_BYTES_CGROUP_PROTECTION(t) (t == CGROUP_LIMIT_MAX ? "infinity" : FORMAT_BYTES(t))