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96573a02 LDM |
1 | #pragma once |
2 | ||
aac5f451 | 3 | #include <inttypes.h> |
96573a02 LDM |
4 | #include <limits.h> |
5 | #include <stdbool.h> | |
6 | #include <stdlib.h> | |
7 | #include <stdio.h> | |
8 | #include <sys/types.h> | |
9 | #include <sys/stat.h> | |
10 | ||
11 | #include <shared/macro.h> | |
12 | ||
13 | /* string handling functions and memory allocations */ | |
14 | /* ************************************************************************ */ | |
15 | #define streq(a, b) (strcmp((a), (b)) == 0) | |
16 | #define strstartswith(a, b) (strncmp(a, b, strlen(b)) == 0) | |
9a437531 | 17 | char *strchr_replace(char *s, char c, char r); |
96573a02 | 18 | void *memdup(const void *p, size_t n) __attribute__((nonnull(1))); |
2b0104fe LDM |
19 | |
20 | /* module-related functions */ | |
21 | /* ************************************************************************ */ | |
f4e8c162 LDM |
22 | #define KMOD_EXTENSION_UNCOMPRESSED ".ko" |
23 | ||
2b0104fe | 24 | int alias_normalize(const char *alias, char buf[static PATH_MAX], size_t *len) _must_check_ __attribute__((nonnull(1,2))); |
52c9c990 | 25 | int underscores(char *s) _must_check_; |
f4e8c162 LDM |
26 | char *modname_normalize(const char *modname, char buf[static PATH_MAX], size_t *len) __attribute__((nonnull(1, 2))); |
27 | char *path_to_modname(const char *path, char buf[static PATH_MAX], size_t *len) __attribute__((nonnull(2))); | |
28 | bool path_ends_with_kmod_ext(const char *path, size_t len) __attribute__((nonnull(1))); | |
96573a02 LDM |
29 | |
30 | /* read-like and fread-like functions */ | |
31 | /* ************************************************************************ */ | |
32 | ssize_t read_str_safe(int fd, char *buf, size_t buflen) _must_check_ __attribute__((nonnull(2))); | |
33 | ssize_t write_str_safe(int fd, const char *buf, size_t buflen) __attribute__((nonnull(2))); | |
34 | int read_str_long(int fd, long *value, int base) _must_check_ __attribute__((nonnull(2))); | |
35 | int read_str_ulong(int fd, unsigned long *value, int base) _must_check_ __attribute__((nonnull(2))); | |
aafd3835 | 36 | char *freadline_wrapped(FILE *fp, unsigned int *linenum) __attribute__((nonnull(1))); |
96573a02 LDM |
37 | |
38 | /* path handling functions */ | |
39 | /* ************************************************************************ */ | |
40 | bool path_is_absolute(const char *p) _must_check_ __attribute__((nonnull(1))); | |
41 | char *path_make_absolute_cwd(const char *p) _must_check_ __attribute__((nonnull(1))); | |
42 | int mkdir_p(const char *path, int len, mode_t mode); | |
43 | int mkdir_parents(const char *path, mode_t mode); | |
44 | unsigned long long stat_mstamp(const struct stat *st); | |
45 | unsigned long long ts_usec(const struct timespec *ts); | |
46 | ||
47 | /* endianess and alignments */ | |
48 | /* ************************************************************************ */ | |
49 | #define get_unaligned(ptr) \ | |
50 | ({ \ | |
51 | struct __attribute__((packed)) { \ | |
52 | typeof(*(ptr)) __v; \ | |
53 | } *__p = (typeof(__p)) (ptr); \ | |
54 | __p->__v; \ | |
55 | }) | |
56 | ||
57 | #define put_unaligned(val, ptr) \ | |
58 | do { \ | |
59 | struct __attribute__((packed)) { \ | |
60 | typeof(*(ptr)) __v; \ | |
61 | } *__p = (typeof(__p)) (ptr); \ | |
62 | __p->__v = (val); \ | |
63 | } while(0) | |
64 | ||
65 | static _always_inline_ unsigned int ALIGN_POWER2(unsigned int u) | |
66 | { | |
67 | return 1 << ((sizeof(u) * 8) - __builtin_clz(u - 1)); | |
68 | } | |
69 | ||
70 | /* misc */ | |
71 | /* ************************************************************************ */ | |
72 | static inline void freep(void *p) { | |
73 | free(*(void**) p); | |
74 | } | |
75 | #define _cleanup_free_ _cleanup_(freep) | |
aac5f451 LDM |
76 | |
77 | static inline bool addu64_overflow(uint64_t a, uint64_t b, uint64_t *res) | |
78 | { | |
79 | #if (HAVE___BUILTIN_UADDL_OVERFLOW && HAVE___BUILTIN_UADDLL_OVERFLOW) | |
80 | #if __SIZEOF_LONG__ == 8 | |
81 | return __builtin_uaddl_overflow(a, b, res); | |
82 | #elif __SIZEOF_LONG_LONG__ == 8 | |
83 | return __builtin_uaddll_overflow(a, b, res); | |
84 | #else | |
85 | #error "sizeof(long long) != 8" | |
86 | #endif | |
87 | #endif | |
88 | *res = a + b; | |
a8c73b86 | 89 | return UINT64_MAX - a < b; |
aac5f451 | 90 | } |