Zbigniew Jędrzejewski-Szmek
6c6368e938
Now that anonymous buffers are used in almost all cases, code which does not use the return value is usually broken.
91 lines
2.5 KiB
C
91 lines
2.5 KiB
C
/* SPDX-License-Identifier: LGPL-2.1-or-later */
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#pragma once
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#include <inttypes.h>
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#include <net/if.h>
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#include <stdbool.h>
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#include "cgroup-util.h"
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#include "macro.h"
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assert_cc(sizeof(pid_t) == sizeof(int32_t));
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#define PID_PRI PRIi32
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#define PID_FMT "%" PID_PRI
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assert_cc(sizeof(uid_t) == sizeof(uint32_t));
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#define UID_FMT "%" PRIu32
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assert_cc(sizeof(gid_t) == sizeof(uint32_t));
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#define GID_FMT "%" PRIu32
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#if SIZEOF_TIME_T == 8
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# define PRI_TIME PRIi64
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#elif SIZEOF_TIME_T == 4
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# define PRI_TIME "li"
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#else
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# error Unknown time_t size
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#endif
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#if defined __x86_64__ && defined __ILP32__
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# define PRI_TIMEX PRIi64
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#else
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# define PRI_TIMEX "li"
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#endif
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#if SIZEOF_RLIM_T == 8
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# define RLIM_FMT "%" PRIu64
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#elif SIZEOF_RLIM_T == 4
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# define RLIM_FMT "%" PRIu32
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#else
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# error Unknown rlim_t size
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#endif
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#if SIZEOF_DEV_T == 8
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# define DEV_FMT "%" PRIu64
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#elif SIZEOF_DEV_T == 4
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# define DEV_FMT "%" PRIu32
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#else
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# error Unknown dev_t size
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#endif
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#if SIZEOF_INO_T == 8
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# define INO_FMT "%" PRIu64
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#elif SIZEOF_INO_T == 4
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# define INO_FMT "%" PRIu32
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#else
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# error Unknown ino_t size
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#endif
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typedef enum {
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FORMAT_IFNAME_IFINDEX = 1 << 0,
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FORMAT_IFNAME_IFINDEX_WITH_PERCENT = (1 << 1) | FORMAT_IFNAME_IFINDEX,
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} FormatIfnameFlag;
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char *format_ifname_full(int ifindex, char buf[static IF_NAMESIZE + 1], FormatIfnameFlag flag);
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static inline char *format_ifname(int ifindex, char buf[static IF_NAMESIZE + 1]) {
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return format_ifname_full(ifindex, buf, 0);
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}
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typedef enum {
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FORMAT_BYTES_USE_IEC = 1 << 0,
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FORMAT_BYTES_BELOW_POINT = 1 << 1,
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FORMAT_BYTES_TRAILING_B = 1 << 2,
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} FormatBytesFlag;
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#define FORMAT_BYTES_MAX 16U
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char *format_bytes_full(char *buf, size_t l, uint64_t t, FormatBytesFlag flag) _warn_unused_result_;
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_warn_unused_result_
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static inline char *format_bytes(char *buf, size_t l, uint64_t t) {
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return format_bytes_full(buf, l, t, FORMAT_BYTES_USE_IEC | FORMAT_BYTES_BELOW_POINT | FORMAT_BYTES_TRAILING_B);
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}
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/* Note: the lifetime of the compound literal is the immediately surrounding block,
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* see C11 §6.5.2.5, and
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* https://stackoverflow.com/questions/34880638/compound-literal-lifetime-and-if-blocks */
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#define FORMAT_BYTES(t) format_bytes((char[FORMAT_BYTES_MAX]){}, FORMAT_BYTES_MAX, t)
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#define FORMAT_BYTES_FULL(t, flag) format_bytes_full((char[FORMAT_BYTES_MAX]){}, FORMAT_BYTES_MAX, t, flag)
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#define FORMAT_BYTES_CGROUP_PROTECTION(t) (t == CGROUP_LIMIT_MAX ? "infinity" : FORMAT_BYTES(t))
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