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 <stdlib.h> 13 #include <stdarg.h> 14 #include <linux/compiler.h> 15 #include <sys/types.h> 16 17 /* General helper functions */ 18 void usage(const char *err) __noreturn; 19 void die(const char *err, ...) __noreturn __printf(1, 2); 20 21 static inline void *zalloc(size_t size) 22 { 23 return calloc(1, size); 24 } 25 26 #define zfree(ptr) ({ free(*ptr); *ptr = NULL; }) 27 28 struct dirent; 29 struct nsinfo; 30 struct strlist; 31 32 int mkdir_p(char *path, mode_t mode); 33 int rm_rf(const char *path); 34 struct strlist *lsdir(const char *name, bool (*filter)(const char *, struct dirent *)); 35 bool lsdir_no_dot_filter(const char *name, struct dirent *d); 36 int copyfile(const char *from, const char *to); 37 int copyfile_mode(const char *from, const char *to, mode_t mode); 38 int copyfile_ns(const char *from, const char *to, struct nsinfo *nsi); 39 int copyfile_offset(int ifd, loff_t off_in, int ofd, loff_t off_out, u64 size); 40 41 ssize_t readn(int fd, void *buf, size_t n); 42 ssize_t writen(int fd, const void *buf, size_t n); 43 44 size_t hex_width(u64 v); 45 int hex2u64(const char *ptr, u64 *val); 46 47 extern unsigned int page_size; 48 int __pure cacheline_size(void); 49 50 int sysctl__max_stack(void); 51 52 int fetch_kernel_version(unsigned int *puint, 53 char *str, size_t str_sz); 54 #define KVER_VERSION(x) (((x) >> 16) & 0xff) 55 #define KVER_PATCHLEVEL(x) (((x) >> 8) & 0xff) 56 #define KVER_SUBLEVEL(x) ((x) & 0xff) 57 #define KVER_FMT "%d.%d.%d" 58 #define KVER_PARAM(x) KVER_VERSION(x), KVER_PATCHLEVEL(x), KVER_SUBLEVEL(x) 59 60 const char *perf_tip(const char *dirpath); 61 62 #ifndef HAVE_GET_CURRENT_DIR_NAME 63 char *get_current_dir_name(void); 64 #endif 65 66 #ifndef HAVE_SCHED_GETCPU_SUPPORT 67 int sched_getcpu(void); 68 #endif 69 70 #ifndef HAVE_SETNS_SUPPORT 71 int setns(int fd, int nstype); 72 #endif 73 74 extern bool perf_singlethreaded; 75 76 void perf_set_singlethreaded(void); 77 void perf_set_multithreaded(void); 78 79 #ifndef O_CLOEXEC 80 #ifdef __sparc__ 81 #define O_CLOEXEC 0x400000 82 #elif defined(__alpha__) || defined(__hppa__) 83 #define O_CLOEXEC 010000000 84 #else 85 #define O_CLOEXEC 02000000 86 #endif 87 #endif 88 89 #endif /* GIT_COMPAT_UTIL_H */ 90