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   systemd is free software; you can redistribute it and/or modify it
  10   under the terms of the GNU Lesser General Public License as published by
  11   the Free Software Foundation; either version 2.1 of the License, or
  12   (at your option) any later version.
  13
  14   systemd is distributed in the hope that it will be useful, but
  15   WITHOUT ANY WARRANTY; without even the implied warranty of
  16   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  17   Lesser General Public License for more details.
  18
  19   You should have received a copy of the GNU Lesser General Public License
  20   along with systemd; If not, see <http://www.gnu.org/licenses/>.
  21 ***/
  22
  23 #include <inttypes.h>
  24 #include <limits.h>
  25 #include <stddef.h>
  26 #include <stdint.h>
  27 #include <sys/types.h>
  28
  29 #include "macro.h"
  30
  31 #define MODE_INVALID ((mode_t) -1)
  32
  33 int parse_boolean(const char *v) _pure_;
  34 int parse_dev(const char *s, dev_t *ret);
  35 int parse_pid(const char *s, pid_t* ret_pid);
  36 int parse_mode(const char *s, mode_t *ret);
  37 int parse_ifindex(const char *s, int *ret);
  38
  39 int parse_size(const char *t, uint64_t base, uint64_t *size);
  40 int parse_range(const char *t, unsigned *lower, unsigned *upper);
  41 int parse_errno(const char *t);
  42 int parse_syscall_and_errno(const char *in, char **name, int *error);
  43
  44 #define FORMAT_BYTES_MAX 8
  45 char *format_bytes(char *buf, size_t l, uint64_t t);
  46
  47 int safe_atou(const char *s, unsigned *ret_u);
  48 int safe_atoi(const char *s, int *ret_i);
  49 int safe_atollu(const char *s, unsigned long long *ret_u);
  50 int safe_atolli(const char *s, long long int *ret_i);
  51
  52 int safe_atou8(const char *s, uint8_t *ret);
  53
  54 int safe_atou16(const char *s, uint16_t *ret);
  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_nice(const char *p, int *ret);
 117
 118 int parse_ip_port(const char *s, uint16_t *ret);