src/basic/parse-util.h

   1 /* SPDX-License-Identifier: LGPL-2.1+ */
   2 #pragma once
   3
   4 #include <inttypes.h>
   5 #include <limits.h>
   6 #include <stddef.h>
   7 #include <stdint.h>
   8 #include <sys/types.h>
   9
  10 #include "macro.h"
  11
  12 int parse_boolean(const char *v) _pure_;
  13 int parse_dev(const char *s, dev_t *ret);
  14 int parse_pid(const char *s, pid_t* ret_pid);
  15 int parse_mode(const char *s, mode_t *ret);
  16 int parse_ifindex(const char *s);
  17 int parse_mtu(int family, const char *s, uint32_t *ret);
  18
  19 int parse_size(const char *t, uint64_t base, uint64_t *size);
  20 int parse_range(const char *t, unsigned *lower, unsigned *upper);
  21 int parse_errno(const char *t);
  22 int parse_syscall_and_errno(const char *in, char **name, int *error);
  23
  24 #define SAFE_ATO_REFUSE_PLUS_MINUS (1U << 30)
  25 #define SAFE_ATO_REFUSE_LEADING_ZERO (1U << 29)
  26 #define SAFE_ATO_REFUSE_LEADING_WHITESPACE (1U << 28)
  27 #define SAFE_ATO_ALL_FLAGS (SAFE_ATO_REFUSE_PLUS_MINUS|SAFE_ATO_REFUSE_LEADING_ZERO|SAFE_ATO_REFUSE_LEADING_WHITESPACE)
  28 #define SAFE_ATO_MASK_FLAGS(base) ((base) & ~SAFE_ATO_ALL_FLAGS)
  29
  30 int safe_atou_full(const char *s, unsigned base, unsigned *ret_u);
  31
  32 static inline int safe_atou(const char *s, unsigned *ret_u) {
  33         return safe_atou_full(s, 0, ret_u);
  34 }
  35
  36 int safe_atoi(const char *s, int *ret_i);
  37 int safe_atolli(const char *s, long long int *ret_i);
  38
  39 int safe_atou8(const char *s, uint8_t *ret);
  40
  41 int safe_atou16_full(const char *s, unsigned base, uint16_t *ret);
  42
  43 static inline int safe_atou16(const char *s, uint16_t *ret) {
  44         return safe_atou16_full(s, 0, ret);
  45 }
  46
  47 static inline int safe_atoux16(const char *s, uint16_t *ret) {
  48         return safe_atou16_full(s, 16, ret);
  49 }
  50
  51 int safe_atoi16(const char *s, int16_t *ret);
  52
  53 static inline int safe_atou32_full(const char *s, unsigned base, uint32_t *ret_u) {
  54         assert_cc(sizeof(uint32_t) == sizeof(unsigned));
  55         return safe_atou_full(s, base, (unsigned*) ret_u);
  56 }
  57
  58 static inline int safe_atou32(const char *s, uint32_t *ret_u) {
  59         return safe_atou32_full(s, 0, (unsigned*) ret_u);
  60 }
  61
  62 static inline int safe_atoi32(const char *s, int32_t *ret_i) {
  63         assert_cc(sizeof(int32_t) == sizeof(int));
  64         return safe_atoi(s, (int*) ret_i);
  65 }
  66
  67 int safe_atollu_full(const char *s, unsigned base, long long unsigned *ret_llu);
  68
  69 static inline int safe_atollu(const char *s, long long unsigned *ret_llu) {
  70         return safe_atollu_full(s, 0, ret_llu);
  71 }
  72
  73 static inline int safe_atou64(const char *s, uint64_t *ret_u) {
  74         assert_cc(sizeof(uint64_t) == sizeof(unsigned long long));
  75         return safe_atollu(s, (unsigned long long*) ret_u);
  76 }
  77
  78 static inline int safe_atoi64(const char *s, int64_t *ret_i) {
  79         assert_cc(sizeof(int64_t) == sizeof(long long int));
  80         return safe_atolli(s, (long long int*) ret_i);
  81 }
  82
  83 static inline int safe_atoux64(const char *s, uint64_t *ret) {
  84         assert_cc(sizeof(int64_t) == sizeof(long long unsigned));
  85         return safe_atollu_full(s, 16, (long long unsigned*) ret);
  86 }
  87
  88 #if LONG_MAX == INT_MAX
  89 static inline int safe_atolu(const char *s, unsigned long *ret_u) {
  90         assert_cc(sizeof(unsigned long) == sizeof(unsigned));
  91         return safe_atou(s, (unsigned*) ret_u);
  92 }
  93 static inline int safe_atoli(const char *s, long int *ret_u) {
  94         assert_cc(sizeof(long int) == sizeof(int));
  95         return safe_atoi(s, (int*) ret_u);
  96 }
  97 #else
  98 static inline int safe_atolu(const char *s, unsigned long *ret_u) {
  99         assert_cc(sizeof(unsigned long) == sizeof(unsigned long long));
 100         return safe_atollu(s, (unsigned long long*) ret_u);
 101 }
 102 static inline int safe_atoli(const char *s, long int *ret_u) {
 103         assert_cc(sizeof(long int) == sizeof(long long int));
 104         return safe_atolli(s, (long long int*) ret_u);
 105 }
 106 #endif
 107
 108 #if SIZE_MAX == UINT_MAX
 109 static inline int safe_atozu(const char *s, size_t *ret_u) {
 110         assert_cc(sizeof(size_t) == sizeof(unsigned));
 111         return safe_atou(s, (unsigned *) ret_u);
 112 }
 113 #else
 114 static inline int safe_atozu(const char *s, size_t *ret_u) {
 115         assert_cc(sizeof(size_t) == sizeof(long unsigned));
 116         return safe_atolu(s, ret_u);
 117 }
 118 #endif
 119
 120 int safe_atod(const char *s, double *ret_d);
 121
 122 int parse_fractional_part_u(const char **s, size_t digits, unsigned *res);
 123
 124 int parse_percent_unbounded(const char *p);
 125 int parse_percent(const char *p);
 126
 127 int parse_permille_unbounded(const char *p);
 128 int parse_permille(const char *p);
 129
 130 int parse_nice(const char *p, int *ret);
 131
 132 int parse_ip_port(const char *s, uint16_t *ret);
 133 int parse_ip_port_range(const char *s, uint16_t *low, uint16_t *high);
 134
 135 int parse_ip_prefix_length(const char *s, int *ret);
 136
 137 int parse_oom_score_adjust(const char *s, int *ret);