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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 15:35:18 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 15:35:18 +0000 |
commit | b750101eb236130cf056c675997decbac904cc49 (patch) | |
tree | a5df1a06754bdd014cb975c051c83b01c9a97532 /src/basic/format-util.h | |
parent | Initial commit. (diff) | |
download | systemd-upstream.tar.xz systemd-upstream.zip |
Adding upstream version 252.22.upstream/252.22upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | src/basic/format-util.h | 105 |
1 files changed, 105 insertions, 0 deletions
diff --git a/src/basic/format-util.h b/src/basic/format-util.h new file mode 100644 index 0000000..8719df3 --- /dev/null +++ b/src/basic/format-util.h @@ -0,0 +1,105 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ +#pragma once + +#include <inttypes.h> +#include <net/if.h> +#include <stdbool.h> + +#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 + +#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 ยง6.5.2.5, 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)) |