1 #ifndef GIT_COMPAT_UTIL_H 2 #define GIT_COMPAT_UTIL_H 3 4 #define _BSD_SOURCE 1 5 /* glibc 2.20 deprecates _BSD_SOURCE in favour of _DEFAULT_SOURCE */ 6 #define _DEFAULT_SOURCE 1 7 8 #include <fcntl.h> 9 #include <stdbool.h> 10 #include <stddef.h> 11 #include <stdlib.h> 12 #include <stdarg.h> 13 #include <linux/compiler.h> 14 #include <linux/types.h> 15 16 /* General helper functions */ 17 void usage(const char *err) __noreturn; 18 void die(const char *err, ...) __noreturn __printf(1, 2); 19 20 static inline void *zalloc(size_t size) 21 { 22 return calloc(1, size); 23 } 24 25 #define zfree(ptr) ({ free(*ptr); *ptr = NULL; }) 26 27 struct dirent; 28 struct strlist; 29 30 int mkdir_p(char *path, mode_t mode); 31 int rm_rf(const char *path); 32 struct strlist *lsdir(const char *name, bool (*filter)(const char *, struct dirent *)); 33 bool lsdir_no_dot_filter(const char *name, struct dirent *d); 34 int copyfile(const char *from, const char *to); 35 int copyfile_mode(const char *from, const char *to, mode_t mode); 36 int copyfile_offset(int fromfd, loff_t from_ofs, int tofd, loff_t to_ofs, u64 size); 37 38 ssize_t readn(int fd, void *buf, size_t n); 39 ssize_t writen(int fd, void *buf, size_t n); 40 41 size_t hex_width(u64 v); 42 int hex2u64(const char *ptr, u64 *val); 43 44 extern unsigned int page_size; 45 extern int cacheline_size; 46 47 int fetch_kernel_version(unsigned int *puint, 48 char *str, size_t str_sz); 49 #define KVER_VERSION(x) (((x) >> 16) & 0xff) 50 #define KVER_PATCHLEVEL(x) (((x) >> 8) & 0xff) 51 #define KVER_SUBLEVEL(x) ((x) & 0xff) 52 #define KVER_FMT "%d.%d.%d" 53 #define KVER_PARAM(x) KVER_VERSION(x), KVER_PATCHLEVEL(x), KVER_SUBLEVEL(x) 54 55 const char *perf_tip(const char *dirpath); 56 57 #ifndef HAVE_SCHED_GETCPU_SUPPORT 58 int sched_getcpu(void); 59 #endif 60 61 #endif /* GIT_COMPAT_UTIL_H */ 62