1 /* SPDX-License-Identifier: LGPL-2.1-or-later */
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 typedef unsigned long loadavg_t;
13
14 int parse_boolean(const char *v) _pure_;
15 int parse_pid(const char *s, pid_t* ret_pid);
16 int parse_mode(const char *s, mode_t *ret);
17 int parse_ifindex(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
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
safe_atou(const char * s,unsigned * ret_u)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
safe_atou16(const char * s,uint16_t * ret)43 static inline int safe_atou16(const char *s, uint16_t *ret) {
44 return safe_atou16_full(s, 0, ret);
45 }
46
safe_atoux16(const char * s,uint16_t * ret)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
safe_atou32_full(const char * s,unsigned base,uint32_t * ret_u)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
safe_atou32(const char * s,uint32_t * ret_u)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
safe_atoi32(const char * s,int32_t * ret_i)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, unsigned long long *ret_llu);
68
safe_atollu(const char * s,unsigned long long * ret_llu)69 static inline int safe_atollu(const char *s, unsigned long long *ret_llu) {
70 return safe_atollu_full(s, 0, ret_llu);
71 }
72
safe_atou64(const char * s,uint64_t * ret_u)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
safe_atoi64(const char * s,int64_t * ret_i)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
safe_atoux64(const char * s,uint64_t * ret)83 static inline int safe_atoux64(const char *s, uint64_t *ret) {
84 assert_cc(sizeof(int64_t) == sizeof(unsigned long long));
85 return safe_atollu_full(s, 16, (unsigned long long*) ret);
86 }
87
88 #if LONG_MAX == INT_MAX
safe_atolu_full(const char * s,unsigned base,unsigned long * ret_u)89 static inline int safe_atolu_full(const char *s, unsigned base, unsigned long *ret_u) {
90 assert_cc(sizeof(unsigned long) == sizeof(unsigned));
91 return safe_atou_full(s, base, (unsigned*) ret_u);
92 }
safe_atoli(const char * s,long int * ret_u)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
safe_atolu_full(const char * s,unsigned base,unsigned long * ret_u)98 static inline int safe_atolu_full(const char *s, unsigned base, unsigned long *ret_u) {
99 assert_cc(sizeof(unsigned long) == sizeof(unsigned long long));
100 return safe_atollu_full(s, base, (unsigned long long*) ret_u);
101 }
safe_atoli(const char * s,long int * ret_u)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
safe_atolu(const char * s,unsigned long * ret_u)108 static inline int safe_atolu(const char *s, unsigned long *ret_u) {
109 return safe_atolu_full(s, 0, ret_u);
110 }
111
112 #if SIZE_MAX == UINT_MAX
safe_atozu(const char * s,size_t * ret_u)113 static inline int safe_atozu(const char *s, size_t *ret_u) {
114 assert_cc(sizeof(size_t) == sizeof(unsigned));
115 return safe_atou(s, (unsigned *) ret_u);
116 }
117 #else
safe_atozu(const char * s,size_t * ret_u)118 static inline int safe_atozu(const char *s, size_t *ret_u) {
119 assert_cc(sizeof(size_t) == sizeof(unsigned long));
120 return safe_atolu(s, ret_u);
121 }
122 #endif
123
124 int safe_atod(const char *s, double *ret_d);
125
126 int parse_fractional_part_u(const char **s, size_t digits, unsigned *res);
127
128 int parse_nice(const char *p, int *ret);
129
130 int parse_ip_port(const char *s, uint16_t *ret);
131 int parse_ip_port_range(const char *s, uint16_t *low, uint16_t *high);
132
133 int parse_ip_prefix_length(const char *s, int *ret);
134
135 int parse_oom_score_adjust(const char *s, int *ret);
136
137 /* Implement floating point using fixed integers, to improve performance when
138 * calculating load averages. These macros can be used to extract the integer
139 * and decimal parts of a value. */
140 #define LOADAVG_PRECISION_BITS 11
141 #define LOADAVG_FIXED_POINT_1_0 (1 << LOADAVG_PRECISION_BITS)
142 #define LOADAVG_INT_SIDE(x) ((x) >> LOADAVG_PRECISION_BITS)
143 #define LOADAVG_DECIMAL_SIDE(x) LOADAVG_INT_SIDE(((x) & (LOADAVG_FIXED_POINT_1_0 - 1)) * 100)
144
145 /* Given a Linux load average (e.g. decimal number 34.89 where 34 is passed as i and 89 is passed as f), convert it
146 * to a loadavg_t. */
147 int store_loadavg_fixed_point(unsigned long i, unsigned long f, loadavg_t *ret);
148 int parse_loadavg_fixed_point(const char *s, loadavg_t *ret);
149