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 int rm_rf_perf_data(const char *path); 35 struct strlist *lsdir(const char *name, bool (*filter)(const char *, struct dirent *)); 36 bool lsdir_no_dot_filter(const char *name, struct dirent *d); 37 int copyfile(const char *from, const char *to); 38 int copyfile_mode(const char *from, const char *to, mode_t mode); 39 int copyfile_ns(const char *from, const char *to, struct nsinfo *nsi); 40 int copyfile_offset(int ifd, loff_t off_in, int ofd, loff_t off_out, u64 size); 41 42 ssize_t readn(int fd, void *buf, size_t n); 43 ssize_t writen(int fd, const void *buf, size_t n); 44 45 size_t hex_width(u64 v); 46 int hex2u64(const char *ptr, u64 *val); 47 48 extern unsigned int page_size; 49 int __pure cacheline_size(void); 50 51 int sysctl__max_stack(void); 52 53 int fetch_kernel_version(unsigned int *puint, 54 char *str, size_t str_sz); 55 #define KVER_VERSION(x) (((x) >> 16) & 0xff) 56 #define KVER_PATCHLEVEL(x) (((x) >> 8) & 0xff) 57 #define KVER_SUBLEVEL(x) ((x) & 0xff) 58 #define KVER_FMT "%d.%d.%d" 59 #define KVER_PARAM(x) KVER_VERSION(x), KVER_PATCHLEVEL(x), KVER_SUBLEVEL(x) 60 61 const char *perf_tip(const char *dirpath); 62 63 #ifndef HAVE_GET_CURRENT_DIR_NAME 64 char *get_current_dir_name(void); 65 #endif 66 67 #ifndef HAVE_SCHED_GETCPU_SUPPORT 68 int sched_getcpu(void); 69 #endif 70 71 #ifndef HAVE_SETNS_SUPPORT 72 int setns(int fd, int nstype); 73 #endif 74 75 extern bool perf_singlethreaded; 76 77 void perf_set_singlethreaded(void); 78 void perf_set_multithreaded(void); 79 80 char *perf_exe(char *buf, int len); 81 82 #ifndef O_CLOEXEC 83 #ifdef __sparc__ 84 #define O_CLOEXEC 0x400000 85 #elif defined(__alpha__) || defined(__hppa__) 86 #define O_CLOEXEC 010000000 87 #else 88 #define O_CLOEXEC 02000000 89 #endif 90 #endif 91 92 #endif /* GIT_COMPAT_UTIL_H */ 93