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_ifindex_or_ifname(const char *s);
  18 int parse_mtu(int family, const char *s, uint32_t *ret);
  19
  20 int parse_size(const char *t, uint64_t base, uint64_t *size);
  21 int parse_range(const char *t, unsigned *lower, unsigned *upper);
  22 int parse_errno(const char *t);
  23 int parse_syscall_and_errno(const char *in, char **name, int *error);
  24
  25 int safe_atou_full(const char *s, unsigned base, unsigned *ret_u);
  26
  27 static inline int safe_atou(const char *s, unsigned *ret_u) {
  28         return safe_atou_full(s, 0, ret_u);
  29 }
  30
  31 int safe_atoi(const char *s, int *ret_i);
  32 int safe_atollu(const char *s, unsigned long long *ret_u);
  33 int safe_atolli(const char *s, long long int *ret_i);
  34
  35 int safe_atou8(const char *s, uint8_t *ret);
  36
  37 int safe_atou16_full(const char *s, unsigned base, uint16_t *ret);
  38
  39 static inline int safe_atou16(const char *s, uint16_t *ret) {
  40         return safe_atou16_full(s, 0, ret);
  41 }
  42
  43 static inline int safe_atoux16(const char *s, uint16_t *ret) {
  44         return safe_atou16_full(s, 16, ret);
  45 }
  46
  47 int safe_atoi16(const char *s, int16_t *ret);
  48
  49 static inline int safe_atou32(const char *s, uint32_t *ret_u) {
  50         assert_cc(sizeof(uint32_t) == sizeof(unsigned));
  51         return safe_atou(s, (unsigned*) ret_u);
  52 }
  53
  54 static inline int safe_atoi32(const char *s, int32_t *ret_i) {
  55         assert_cc(sizeof(int32_t) == sizeof(int));
  56         return safe_atoi(s, (int*) ret_i);
  57 }
  58
  59 static inline int safe_atou64(const char *s, uint64_t *ret_u) {
  60         assert_cc(sizeof(uint64_t) == sizeof(unsigned long long));
  61         return safe_atollu(s, (unsigned long long*) ret_u);
  62 }
  63
  64 static inline int safe_atoi64(const char *s, int64_t *ret_i) {
  65         assert_cc(sizeof(int64_t) == sizeof(long long int));
  66         return safe_atolli(s, (long long int*) ret_i);
  67 }
  68
  69 #if LONG_MAX == INT_MAX
  70 static inline int safe_atolu(const char *s, unsigned long *ret_u) {
  71         assert_cc(sizeof(unsigned long) == sizeof(unsigned));
  72         return safe_atou(s, (unsigned*) ret_u);
  73 }
  74 static inline int safe_atoli(const char *s, long int *ret_u) {
  75         assert_cc(sizeof(long int) == sizeof(int));
  76         return safe_atoi(s, (int*) ret_u);
  77 }
  78 #else
  79 static inline int safe_atolu(const char *s, unsigned long *ret_u) {
  80         assert_cc(sizeof(unsigned long) == sizeof(unsigned long long));
  81         return safe_atollu(s, (unsigned long long*) ret_u);
  82 }
  83 static inline int safe_atoli(const char *s, long int *ret_u) {
  84         assert_cc(sizeof(long int) == sizeof(long long int));
  85         return safe_atolli(s, (long long int*) ret_u);
  86 }
  87 #endif
  88
  89 #if SIZE_MAX == UINT_MAX
  90 static inline int safe_atozu(const char *s, size_t *ret_u) {
  91         assert_cc(sizeof(size_t) == sizeof(unsigned));
  92         return safe_atou(s, (unsigned *) ret_u);
  93 }
  94 #else
  95 static inline int safe_atozu(const char *s, size_t *ret_u) {
  96         assert_cc(sizeof(size_t) == sizeof(long unsigned));
  97         return safe_atolu(s, ret_u);
  98 }
  99 #endif
 100
 101 int safe_atod(const char *s, double *ret_d);
 102
 103 int parse_fractional_part_u(const char **s, size_t digits, unsigned *res);
 104
 105 int parse_percent_unbounded(const char *p);
 106 int parse_percent(const char *p);
 107
 108 int parse_permille_unbounded(const char *p);
 109 int parse_permille(const char *p);
 110
 111 int parse_nice(const char *p, int *ret);
 112
 113 int parse_ip_port(const char *s, uint16_t *ret);
 114 int parse_ip_port_range(const char *s, uint16_t *low, uint16_t *high);
 115
 116 int parse_oom_score_adjust(const char *s, int *ret);