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 #define MODE_INVALID ((mode_t) -1)
  13
  14 int parse_boolean(const char *v) _pure_;
  15 int parse_dev(const char *s, dev_t *ret);
  16 int parse_pid(const char *s, pid_t* ret_pid);
  17 int parse_mode(const char *s, mode_t *ret);
  18 int parse_ifindex(const char *s, int *ret);
  19 int parse_mtu(int family, const char *s, uint32_t *ret);
  20
  21 int parse_size(const char *t, uint64_t base, uint64_t *size);
  22 int parse_range(const char *t, unsigned *lower, unsigned *upper);
  23 int parse_errno(const char *t);
  24 int parse_syscall_and_errno(const char *in, char **name, int *error);
  25
  26 #define FORMAT_BYTES_MAX 8
  27 char *format_bytes(char *buf, size_t l, uint64_t t);
  28
  29 int safe_atou_full(const char *s, unsigned base, unsigned *ret_u);
  30
  31 static inline int safe_atou(const char *s, unsigned *ret_u) {
  32         return safe_atou_full(s, 0, ret_u);
  33 }
  34
  35 int safe_atoi(const char *s, int *ret_i);
  36 int safe_atollu(const char *s, unsigned long long *ret_u);
  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(const char *s, uint32_t *ret_u) {
  54         assert_cc(sizeof(uint32_t) == sizeof(unsigned));
  55         return safe_atou(s, (unsigned*) ret_u);
  56 }
  57
  58 static inline int safe_atoi32(const char *s, int32_t *ret_i) {
  59         assert_cc(sizeof(int32_t) == sizeof(int));
  60         return safe_atoi(s, (int*) ret_i);
  61 }
  62
  63 static inline int safe_atou64(const char *s, uint64_t *ret_u) {
  64         assert_cc(sizeof(uint64_t) == sizeof(unsigned long long));
  65         return safe_atollu(s, (unsigned long long*) ret_u);
  66 }
  67
  68 static inline int safe_atoi64(const char *s, int64_t *ret_i) {
  69         assert_cc(sizeof(int64_t) == sizeof(long long int));
  70         return safe_atolli(s, (long long int*) ret_i);
  71 }
  72
  73 #if LONG_MAX == INT_MAX
  74 static inline int safe_atolu(const char *s, unsigned long *ret_u) {
  75         assert_cc(sizeof(unsigned long) == sizeof(unsigned));
  76         return safe_atou(s, (unsigned*) ret_u);
  77 }
  78 static inline int safe_atoli(const char *s, long int *ret_u) {
  79         assert_cc(sizeof(long int) == sizeof(int));
  80         return safe_atoi(s, (int*) ret_u);
  81 }
  82 #else
  83 static inline int safe_atolu(const char *s, unsigned long *ret_u) {
  84         assert_cc(sizeof(unsigned long) == sizeof(unsigned long long));
  85         return safe_atollu(s, (unsigned long long*) ret_u);
  86 }
  87 static inline int safe_atoli(const char *s, long int *ret_u) {
  88         assert_cc(sizeof(long int) == sizeof(long long int));
  89         return safe_atolli(s, (long long int*) ret_u);
  90 }
  91 #endif
  92
  93 #if SIZE_MAX == UINT_MAX
  94 static inline int safe_atozu(const char *s, size_t *ret_u) {
  95         assert_cc(sizeof(size_t) == sizeof(unsigned));
  96         return safe_atou(s, (unsigned *) ret_u);
  97 }
  98 #else
  99 static inline int safe_atozu(const char *s, size_t *ret_u) {
 100         assert_cc(sizeof(size_t) == sizeof(long unsigned));
 101         return safe_atolu(s, ret_u);
 102 }
 103 #endif
 104
 105 int safe_atod(const char *s, double *ret_d);
 106
 107 int parse_fractional_part_u(const char **s, size_t digits, unsigned *res);
 108
 109 int parse_percent_unbounded(const char *p);
 110 int parse_percent(const char *p);
 111
 112 int parse_permille_unbounded(const char *p);
 113 int parse_permille(const char *p);
 114
 115 int parse_nice(const char *p, int *ret);
 116
 117 int parse_ip_port(const char *s, uint16_t *ret);
 118
 119 int parse_oom_score_adjust(const char *s, int *ret);