1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef GIT_COMPAT_UTIL_H 3 #define GIT_COMPAT_UTIL_H 4 5 #define _BSD_SOURCE 1 6 /* glibc 2.20 deprecates _BSD_SOURCE in favour of _DEFAULT_SOURCE */ 7 #define _DEFAULT_SOURCE 1 8 9 #include <fcntl.h> 10 #include <stdbool.h> 11 #include <stddef.h> 12 #include <linux/compiler.h> 13 #include <sys/types.h> 14 15 /* General helper functions */ 16 void usage(const char *err) __noreturn; 17 void die(const char *err, ...) __noreturn __printf(1, 2); 18 19 struct dirent; 20 struct nsinfo; 21 struct strlist; 22 23 int mkdir_p(char *path, mode_t mode); 24 int rm_rf(const char *path); 25 int rm_rf_perf_data(const char *path); 26 struct strlist *lsdir(const char *name, bool (*filter)(const char *, struct dirent *)); 27 bool lsdir_no_dot_filter(const char *name, struct dirent *d); 28 int copyfile(const char *from, const char *to); 29 int copyfile_mode(const char *from, const char *to, mode_t mode); 30 int copyfile_ns(const char *from, const char *to, struct nsinfo *nsi); 31 int copyfile_offset(int ifd, loff_t off_in, int ofd, loff_t off_out, u64 size); 32 33 ssize_t readn(int fd, void *buf, size_t n); 34 ssize_t writen(int fd, const void *buf, size_t n); 35 36 size_t hex_width(u64 v); 37 38 extern unsigned int page_size; 39 int __pure cacheline_size(void); 40 41 int sysctl__max_stack(void); 42 43 int fetch_kernel_version(unsigned int *puint, 44 char *str, size_t str_sz); 45 #define KVER_VERSION(x) (((x) >> 16) & 0xff) 46 #define KVER_PATCHLEVEL(x) (((x) >> 8) & 0xff) 47 #define KVER_SUBLEVEL(x) ((x) & 0xff) 48 #define KVER_FMT "%d.%d.%d" 49 #define KVER_PARAM(x) KVER_VERSION(x), KVER_PATCHLEVEL(x), KVER_SUBLEVEL(x) 50 51 const char *perf_tip(const char *dirpath); 52 53 #ifndef HAVE_SCHED_GETCPU_SUPPORT 54 int sched_getcpu(void); 55 #endif 56 57 extern bool perf_singlethreaded; 58 59 void perf_set_singlethreaded(void); 60 void perf_set_multithreaded(void); 61 62 char *perf_exe(char *buf, int len); 63 64 #ifndef O_CLOEXEC 65 #ifdef __sparc__ 66 #define O_CLOEXEC 0x400000 67 #elif defined(__alpha__) || defined(__hppa__) 68 #define O_CLOEXEC 010000000 69 #else 70 #define O_CLOEXEC 02000000 71 #endif 72 #endif 73 74 #endif /* GIT_COMPAT_UTIL_H */ 75