src/basic/parse-util.h

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