1 #ifndef GIT_COMPAT_UTIL_H
2 #define GIT_COMPAT_UTIL_H
5 /* glibc 2.20 deprecates _BSD_SOURCE in favour of _DEFAULT_SOURCE */
6 #define _DEFAULT_SOURCE 1
13 #include <linux/compiler.h>
14 #include <linux/types.h>
15 #include "namespaces.h"
17 /* General helper functions */
18 void usage(const char *err) __noreturn;
19 void die(const char *err, ...) __noreturn __printf(1, 2);
21 static inline void *zalloc(size_t size)
23 return calloc(1, size);
26 #define zfree(ptr) ({ free(*ptr); *ptr = NULL; })
31 int mkdir_p(char *path, mode_t mode);
32 int rm_rf(const char *path);
33 struct strlist *lsdir(const char *name, bool (*filter)(const char *, struct dirent *));
34 bool lsdir_no_dot_filter(const char *name, struct dirent *d);
35 int copyfile(const char *from, const char *to);
36 int copyfile_mode(const char *from, const char *to, mode_t mode);
37 int copyfile_ns(const char *from, const char *to, struct nsinfo *nsi);
38 int copyfile_offset(int fromfd, loff_t from_ofs, int tofd, loff_t to_ofs, u64 size);
40 ssize_t readn(int fd, void *buf, size_t n);
41 ssize_t writen(int fd, const void *buf, size_t n);
43 size_t hex_width(u64 v);
44 int hex2u64(const char *ptr, u64 *val);
46 extern unsigned int page_size;
47 extern int cacheline_size;
49 int fetch_kernel_version(unsigned int *puint,
50 char *str, size_t str_sz);
51 #define KVER_VERSION(x) (((x) >> 16) & 0xff)
52 #define KVER_PATCHLEVEL(x) (((x) >> 8) & 0xff)
53 #define KVER_SUBLEVEL(x) ((x) & 0xff)
54 #define KVER_FMT "%d.%d.%d"
55 #define KVER_PARAM(x) KVER_VERSION(x), KVER_PATCHLEVEL(x), KVER_SUBLEVEL(x)
57 const char *perf_tip(const char *dirpath);
59 #ifndef HAVE_SCHED_GETCPU_SUPPORT
60 int sched_getcpu(void);
63 #ifndef HAVE_SETNS_SUPPORT
64 int setns(int fd, int nstype);
67 #endif /* GIT_COMPAT_UTIL_H */