src/basic/parse-util.h

   1 /* SPDX-License-Identifier: LGPL-2.1+ */
   2 #pragma once
   3
   4 /***
   5   This file is part of systemd.
   6
   7   Copyright 2010 Lennart Poettering
   8 ***/
   9
  10 #include <inttypes.h>
  11 #include <limits.h>
  12 #include <stddef.h>
  13 #include <stdint.h>
  14 #include <sys/types.h>
  15
  16 #include "macro.h"
  17
  18 #define MODE_INVALID ((mode_t) -1)
  19
  20 int parse_boolean(const char *v) _pure_;
  21 int parse_dev(const char *s, dev_t *ret);
  22 int parse_pid(const char *s, pid_t* ret_pid);
  23 int parse_mode(const char *s, mode_t *ret);
  24 int parse_ifindex(const char *s, int *ret);
  25 int parse_mtu(int family, const char *s, uint32_t *ret);
  26
  27 int parse_size(const char *t, uint64_t base, uint64_t *size);
  28 int parse_range(const char *t, unsigned *lower, unsigned *upper);
  29 int parse_errno(const char *t);
  30 int parse_syscall_and_errno(const char *in, char **name, int *error);
  31
  32 #define FORMAT_BYTES_MAX 8
  33 char *format_bytes(char *buf, size_t l, uint64_t t);
  34
  35 int safe_atou_full(const char *s, unsigned base, unsigned *ret_u);
  36
  37 static inline int safe_atou(const char *s, unsigned *ret_u) {
  38         return safe_atou_full(s, 0, ret_u);
  39 }
  40
  41 int safe_atoi(const char *s, int *ret_i);
  42 int safe_atollu(const char *s, unsigned long long *ret_u);
  43 int safe_atolli(const char *s, long long int *ret_i);
  44
  45 int safe_atou8(const char *s, uint8_t *ret);
  46
  47 int safe_atou16_full(const char *s, unsigned base, uint16_t *ret);
  48
  49 static inline int safe_atou16(const char *s, uint16_t *ret) {
  50         return safe_atou16_full(s, 0, ret);
  51 }
  52
  53 static inline int safe_atoux16(const char *s, uint16_t *ret) {
  54         return safe_atou16_full(s, 16, ret);
  55 }
  56
  57 int safe_atoi16(const char *s, int16_t *ret);
  58
  59 static inline int safe_atou32(const char *s, uint32_t *ret_u) {
  60         assert_cc(sizeof(uint32_t) == sizeof(unsigned));
  61         return safe_atou(s, (unsigned*) ret_u);
  62 }
  63
  64 static inline int safe_atoi32(const char *s, int32_t *ret_i) {
  65         assert_cc(sizeof(int32_t) == sizeof(int));
  66         return safe_atoi(s, (int*) ret_i);
  67 }
  68
  69 static inline int safe_atou64(const char *s, uint64_t *ret_u) {
  70         assert_cc(sizeof(uint64_t) == sizeof(unsigned long long));
  71         return safe_atollu(s, (unsigned long long*) ret_u);
  72 }
  73
  74 static inline int safe_atoi64(const char *s, int64_t *ret_i) {
  75         assert_cc(sizeof(int64_t) == sizeof(long long int));
  76         return safe_atolli(s, (long long int*) ret_i);
  77 }
  78
  79 #if LONG_MAX == INT_MAX
  80 static inline int safe_atolu(const char *s, unsigned long *ret_u) {
  81         assert_cc(sizeof(unsigned long) == sizeof(unsigned));
  82         return safe_atou(s, (unsigned*) ret_u);
  83 }
  84 static inline int safe_atoli(const char *s, long int *ret_u) {
  85         assert_cc(sizeof(long int) == sizeof(int));
  86         return safe_atoi(s, (int*) ret_u);
  87 }
  88 #else
  89 static inline int safe_atolu(const char *s, unsigned long *ret_u) {
  90         assert_cc(sizeof(unsigned long) == sizeof(unsigned long long));
  91         return safe_atollu(s, (unsigned long long*) ret_u);
  92 }
  93 static inline int safe_atoli(const char *s, long int *ret_u) {
  94         assert_cc(sizeof(long int) == sizeof(long long int));
  95         return safe_atolli(s, (long long int*) ret_u);
  96 }
  97 #endif
  98
  99 #if SIZE_MAX == UINT_MAX
 100 static inline int safe_atozu(const char *s, size_t *ret_u) {
 101         assert_cc(sizeof(size_t) == sizeof(unsigned));
 102         return safe_atou(s, (unsigned *) ret_u);
 103 }
 104 #else
 105 static inline int safe_atozu(const char *s, size_t *ret_u) {
 106         assert_cc(sizeof(size_t) == sizeof(long unsigned));
 107         return safe_atolu(s, ret_u);
 108 }
 109 #endif
 110
 111 int safe_atod(const char *s, double *ret_d);
 112
 113 int parse_fractional_part_u(const char **s, size_t digits, unsigned *res);
 114
 115 int parse_percent_unbounded(const char *p);
 116 int parse_percent(const char *p);
 117
 118 int parse_permille_unbounded(const char *p);
 119 int parse_permille(const char *p);
 120
 121 int parse_nice(const char *p, int *ret);
 122
 123 int parse_ip_port(const char *s, uint16_t *ret);
 124
 125 int parse_oom_score_adjust(const char *s, int *ret);