#ifndef _WIMLIB_UTIL_H #define _WIMLIB_UTIL_H #include "config.h" #include "wimlib_tchar.h" #include #include #include #include #include #ifdef __GNUC__ # if defined(__CYGWIN__) || defined(__WIN32__) # define WIMLIBAPI __declspec(dllexport) # else # define WIMLIBAPI __attribute__((visibility("default"))) # endif # define ALWAYS_INLINE inline __attribute__((always_inline)) # define PACKED __attribute__((packed)) # define FORMAT(type, format_str, args_start) \ /*__attribute__((format(type, format_str, args_start))) */ # if __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 4) # define COLD __attribute__((cold)) # else # define COLD # endif #else # define WIMLIBAPI # define ALWAYS_INLINE inline # define FORMAT(type, format_str, args_start) # define COLD # define PACKED #endif /* __GNUC__ */ #if 0 #ifdef WITH_FUSE #define atomic_inc(ptr) \ __sync_fetch_and_add(ptr, 1) #define atomic_dec(ptr) \ __sync_sub_and_fetch(ptr, 1) #endif #endif #ifndef _NTFS_TYPES_H typedef uint8_t u8; typedef uint16_t u16; typedef uint32_t u32; typedef uint64_t u64; #endif /* A pointer to 'utf16lechar' indicates a UTF-16LE encoded string */ typedef u16 utf16lechar; #define TMALLOC(n) MALLOC((n) * sizeof(tchar)) /* encoding.c */ extern void iconv_global_cleanup(); extern bool wimlib_mbs_is_utf8; #define DECLARE_CHAR_CONVERSION_FUNCTIONS(varname1, varname2, \ chartype1, chartype2) \ \ extern int \ varname1##_to_##varname2(const chartype1 *in, size_t in_nbytes, \ chartype2 **out_ret, \ size_t *out_nbytes_ret); \ \ extern int \ varname1##_to_##varname2##_nbytes(const chartype1 *in, size_t in_nbytes,\ size_t *out_nbytes_ret); \ \ extern int \ varname1##_to_##varname2##_buf(const chartype1 *in, size_t in_nbytes, \ chartype2 *out); #if !TCHAR_IS_UTF16LE DECLARE_CHAR_CONVERSION_FUNCTIONS(utf16le, tstr, utf16lechar, tchar); DECLARE_CHAR_CONVERSION_FUNCTIONS(tstr, utf16le, tchar, utf16lechar); #endif extern int utf8_to_tstr_simple(const char *utf8str, tchar **out); extern int tstr_to_utf8_simple(const tchar *tstr, char **out); #ifndef min #define min(a, b) ({ typeof(a) __a = (a); typeof(b) __b = (b); \ (__a < __b) ? __a : __b; }) #endif #ifndef max #define max(a, b) ({ typeof(a) __a = (a); typeof(b) __b = (b); \ (__a > __b) ? __a : __b; }) #endif #ifndef swap #define swap(a, b) ({typeof(a) _a = a; (a) = (b); (b) = _a;}) #endif /** * container_of - cast a member of a structure out to the containing structure * @ptr: the pointer to the member. * @type: the type of the container struct this is embedded in. * @member: the name of the member within the struct. * */ #ifndef container_of #define container_of(ptr, type, member) ({ \ const typeof( ((type *)0)->member ) *__mptr = (ptr); \ (type *)( (char *)__mptr - offsetof(type,member) );}) #endif #define DIV_ROUND_UP(numerator, denominator) \ (((numerator) + (denominator) - 1) / (denominator)) #define MODULO_NONZERO(numerator, denominator) \ (((numerator) % (denominator)) ? ((numerator) % (denominator)) : (denominator)) #define ARRAY_LEN(array) (sizeof(array) / sizeof((array)[0])) #define ZERO_ARRAY(array) memset(array, 0, sizeof(array)) /* Used for buffering FILE IO in a few places */ #define BUFFER_SIZE 32768 static inline void FORMAT(printf, 1, 2) dummy_tprintf(const tchar *format, ...) { } #ifdef ENABLE_ERROR_MESSAGES extern void wimlib_error(const tchar *format, ...) FORMAT(printf, 1, 2) COLD; extern void wimlib_error_with_errno(const tchar *format, ...) FORMAT(printf, 1, 2) COLD; extern void wimlib_warning(const tchar *format, ...) FORMAT(printf, 1, 2) COLD; extern void wimlib_warning_with_errno(const tchar *format, ...) FORMAT(printf, 1, 2) COLD; # define ERROR(format, ...) wimlib_error(T(format), ## __VA_ARGS__) # define ERROR_WITH_ERRNO(format, ...) wimlib_error_with_errno(T(format), ## __VA_ARGS__) # define WARNING(format, ...) wimlib_warning(T(format), ## __VA_ARGS__) # define WARNING_WITH_ERRNO(format, ...) wimlib_warning_with_errno(T(format), ## __VA_ARGS__) #else /* ENABLE_ERROR_MESSAGES */ # define ERROR(format, ...) dummy_tprintf(T(format), ## __VA_ARGS__) # define ERROR_WITH_ERRNO(format, ...) dummy_tprintf(T(format), ## __VA_ARGS__) # define WARNING(format, ...) dummy_tprintf(T(format), ## __VA_ARGS__) # define WARNING_WITH_ERRNO(format, ...) dummy_tprintf(T(format), ## __VA_ARGS__) #endif /* !ENABLE_ERROR_MESSAGES */ #if defined(ENABLE_MORE_DEBUG) && !defined(ENABLE_DEBUG) # define ENABLE_DEBUG 1 #endif #if defined(ENABLE_MORE_ASSERTIONS) && !defined(ENABLE_ASSERTIONS) # define ENABLE_ASSERTIONS 1 #endif #ifdef ENABLE_DEBUG extern void wimlib_debug(const tchar *file, int line, const char *func, const tchar *format, ...); # define DEBUG(format, ...) \ wimlib_debug(T(__FILE__), __LINE__, __func__, T(format), ## __VA_ARGS__) #else # define DEBUG(format, ...) dummy_tprintf(T(format), ## __VA_ARGS__) #endif /* !ENABLE_DEBUG */ #ifdef ENABLE_MORE_DEBUG # define DEBUG2(format, ...) DEBUG(format, ## __VA_ARGS__) #else # define DEBUG2(format, ...) dummy_tprintf(T(format), ## __VA_ARGS__) #endif /* !ENABLE_MORE_DEBUG */ #ifdef ENABLE_ASSERTIONS #include # define wimlib_assert(expr) assert(expr) #else # define wimlib_assert(expr) #endif /* !ENABLE_ASSERTIONS */ #ifdef ENABLE_MORE_ASSERTIONS # define wimlib_assert2(expr) wimlib_assert(expr) #else # define wimlib_assert2(expr) #endif /* !ENABLE_MORE_ASSERTIONS */ #define BUILD_BUG_ON(condition) ((void)sizeof(char[1 - 2*!!(condition)])) #ifdef ENABLE_CUSTOM_MEMORY_ALLOCATOR extern void *(*wimlib_malloc_func)(size_t); extern void (*wimlib_free_func)(void *); extern void *(*wimlib_realloc_func)(void *, size_t); extern void *wimlib_calloc(size_t nmemb, size_t size); #ifdef __WIN32__ extern wchar_t *wimlib_wcsdup(const wchar_t *str); #endif extern char *wimlib_strdup(const char *str); # define MALLOC wimlib_malloc_func # define FREE wimlib_free_func # define REALLOC wimlib_realloc_func # define CALLOC wimlib_calloc # define STRDUP wimlib_strdup # define WSTRDUP wimlib_wcsdup #else /* ENABLE_CUSTOM_MEMORY_ALLOCATOR */ # include # include # define MALLOC malloc # define FREE free # define REALLOC realloc # define CALLOC calloc # define STRDUP strdup # define WSTRDUP wcsdup #endif /* !ENABLE_CUSTOM_MEMORY_ALLOCATOR */ /* util.c */ extern void randomize_byte_array(u8 *p, size_t n); extern void randomize_char_array_with_alnum(tchar p[], size_t n); const tchar * path_basename_with_len(const tchar *path, size_t len); const tchar * path_basename(const tchar *path); extern const tchar * path_stream_name(const tchar *path); static inline void print_byte_field(const u8 field[], size_t len, FILE *out) { while (len--) tfprintf(out, T("%02hhx"), *field++); } static inline u32 bsr32(u32 n) { #if defined(__x86__) || defined(__x86_64__) asm("bsrl %0, %0;" : "=r"(n) : "0" (n)); return n; #else u32 pow = 0; while ((n >>= 1) != 0) pow++; return pow; #endif } #ifdef __WIN32__ # define wimlib_fprintf fwprintf # define wimlib_printf wprintf #else /* __WIN32__ */ extern int wimlib_fprintf(FILE *fp, const tchar *format, ...) FORMAT(printf, 2, 3); extern int wimlib_printf(const tchar *format, ...) FORMAT(printf, 1, 2); #endif /* !__WIN32__ */ extern void zap_backslashes(tchar *s); extern tchar * canonicalize_wim_path(const tchar *wim_path); extern tchar * canonicalize_fs_path(const tchar *fs_path); static inline u64 hash_u64(u64 n) { return n * 0x9e37fffffffc0001ULL; } extern size_t full_read(int fd, void *buf, size_t n); extern size_t full_write(int fd, const void *buf, size_t n); extern size_t full_pread(int fd, void *buf, size_t nbyte, off_t offset); extern size_t full_pwrite(int fd, const void *buf, size_t count, off_t offset); #ifdef __WIN32__ struct iovec { void *iov_base; size_t iov_len; }; #else struct iovec; #endif extern size_t full_writev(int fd, struct iovec *iov, int iovcnt); extern off_t filedes_offset(int fd); #ifndef __WIN32__ # define O_BINARY 0 #endif #endif /* _WIMLIB_UTIL_H */