#ifdef __MINGW64_VERSION_MAJOR #include #include typedef _sigset_t sigset_t; #endif #include #include /* MinGW-w64 reports to have flockfile, but it does not actually have it. */ #ifdef __MINGW64_VERSION_MAJOR #undef _POSIX_THREAD_SAFE_FUNCTIONS #endif extern int core_fscache; struct repository; int are_long_paths_enabled(void); int mingw_core_config(const char *var, const char *value, void *cb); #define platform_core_config mingw_core_config /* * things that are not available in header files */ typedef int uid_t; typedef int socklen_t; #ifndef __MINGW64_VERSION_MAJOR typedef int pid_t; #define hstrerror strerror #endif #define S_IFLNK 0120000 /* Symbolic link */ #define S_ISLNK(x) (((x) & S_IFMT) == S_IFLNK) #define S_ISSOCK(x) 0 #ifndef S_IRWXG #define S_IRGRP 0 #define S_IWGRP 0 #define S_IXGRP 0 #define S_IRWXG (S_IRGRP | S_IWGRP | S_IXGRP) #endif #ifndef S_IRWXO #define S_IROTH 0 #define S_IWOTH 0 #define S_IXOTH 0 #define S_IRWXO (S_IROTH | S_IWOTH | S_IXOTH) #endif #define S_ISUID 0004000 #define S_ISGID 0002000 #define S_ISVTX 0001000 #define WIFEXITED(x) 1 #define WIFSIGNALED(x) 0 #define WEXITSTATUS(x) ((x) & 0xff) #define WTERMSIG(x) SIGTERM #ifndef EWOULDBLOCK #define EWOULDBLOCK EAGAIN #endif #ifndef ELOOP #define ELOOP EMLINK #endif #define SHUT_WR SD_SEND #define SIGHUP 1 #define SIGQUIT 3 #define SIGKILL 9 #define SIGPIPE 13 #define SIGALRM 14 #define SIGCHLD 17 #define F_GETFD 1 #define F_SETFD 2 #define FD_CLOEXEC 0x1 #if !defined O_CLOEXEC && defined O_NOINHERIT #define O_CLOEXEC O_NOINHERIT #endif #ifndef EAFNOSUPPORT #define EAFNOSUPPORT WSAEAFNOSUPPORT #endif #ifndef ECONNABORTED #define ECONNABORTED WSAECONNABORTED #endif #ifndef ENOTSOCK #define ENOTSOCK WSAENOTSOCK #endif struct passwd { char *pw_name; char *pw_gecos; char *pw_dir; }; typedef void (__cdecl *sig_handler_t)(int); struct sigaction { sig_handler_t sa_handler; unsigned sa_flags; }; #define SA_RESTART 0 struct itimerval { struct timeval it_value, it_interval; }; #define ITIMER_REAL 0 struct utsname { char sysname[16]; char nodename[1]; char release[16]; char version[16]; char machine[1]; }; /* * sanitize preprocessor namespace polluted by Windows headers defining * macros which collide with git local versions */ #undef HELP_COMMAND /* from winuser.h */ /* * trivial stubs */ static inline int fchmod(int fildes, mode_t mode) { errno = ENOSYS; return -1; } #ifndef __MINGW64_VERSION_MAJOR static inline pid_t fork(void) { errno = ENOSYS; return -1; } #endif static inline unsigned int alarm(unsigned int seconds) { return 0; } static inline int fsync(int fd) { return _commit(fd); } static inline void sync(void) {} static inline uid_t getuid(void) { return 1; } static inline struct passwd *getpwnam(const char *name) { return NULL; } static inline int fcntl(int fd, int cmd, ...) { if (cmd == F_GETFD || cmd == F_SETFD) return 0; errno = EINVAL; return -1; } #define sigemptyset(x) (void)0 static inline int sigaddset(sigset_t *set, int signum) { return 0; } #define SIG_BLOCK 0 #define SIG_UNBLOCK 0 static inline int sigprocmask(int how, const sigset_t *set, sigset_t *oldset) { return 0; } static inline pid_t getppid(void) { return 1; } static inline pid_t getpgid(pid_t pid) { return pid == 0 ? getpid() : pid; } static inline pid_t tcgetpgrp(int fd) { return getpid(); } /* * simple adaptors */ int mingw_mkdir(const char *path, int mode); #define mkdir mingw_mkdir #define WNOHANG 1 pid_t waitpid(pid_t pid, int *status, int options); #define kill mingw_kill int mingw_kill(pid_t pid, int sig); #ifndef NO_OPENSSL #include static inline int mingw_SSL_set_fd(SSL *ssl, int fd) { return SSL_set_fd(ssl, _get_osfhandle(fd)); } #define SSL_set_fd mingw_SSL_set_fd static inline int mingw_SSL_set_rfd(SSL *ssl, int fd) { return SSL_set_rfd(ssl, _get_osfhandle(fd)); } #define SSL_set_rfd mingw_SSL_set_rfd static inline int mingw_SSL_set_wfd(SSL *ssl, int fd) { return SSL_set_wfd(ssl, _get_osfhandle(fd)); } #define SSL_set_wfd mingw_SSL_set_wfd #endif /* * implementations of missing functions */ int pipe(int filedes[2]); unsigned int sleep (unsigned int seconds); int mkstemp(char *template); int gettimeofday(struct timeval *tv, void *tz); #ifndef __MINGW64_VERSION_MAJOR struct tm *gmtime_r(const time_t *timep, struct tm *result); struct tm *localtime_r(const time_t *timep, struct tm *result); #endif int getpagesize(void); /* defined in MinGW's libgcc.a */ struct passwd *getpwuid(uid_t uid); int setitimer(int type, struct itimerval *in, struct itimerval *out); int sigaction(int sig, struct sigaction *in, struct sigaction *out); int link(const char *oldpath, const char *newpath); int uname(struct utsname *buf); int readlink(const char *path, char *buf, size_t bufsiz); struct index_state; int mingw_create_symlink(struct index_state *index, const char *target, const char *link); #define create_symlink mingw_create_symlink /* * replacements of existing functions */ int mingw_unlink(const char *pathname); #define unlink mingw_unlink int mingw_rmdir(const char *path); #define rmdir mingw_rmdir int mingw_open (const char *filename, int oflags, ...); #define open mingw_open #undef OPEN_RETURNS_EINTR int mingw_fgetc(FILE *stream); #define fgetc mingw_fgetc FILE *mingw_fopen (const char *filename, const char *otype); #define fopen mingw_fopen FILE *mingw_freopen (const char *filename, const char *otype, FILE *stream); #define freopen mingw_freopen int mingw_fflush(FILE *stream); #define fflush mingw_fflush ssize_t mingw_write(int fd, const void *buf, size_t len); #define write mingw_write int mingw_access(const char *filename, int mode); #undef access #define access mingw_access int mingw_chdir(const char *dirname); #define chdir mingw_chdir int mingw_chmod(const char *filename, int mode); #define chmod mingw_chmod char *mingw_mktemp(char *template); #define mktemp mingw_mktemp char *mingw_getcwd(char *pointer, int len); #define getcwd mingw_getcwd #ifdef NO_UNSETENV #error "NO_UNSETENV is incompatible with the Windows-specific startup code!" #endif /* * We bind *env() routines (even the mingw_ ones) to private mingw_ versions. * These talk to the CRT using UNICODE/wchar_t, but maintain the original * narrow-char API. * * Note that the MSCRT maintains both ANSI (getenv()) and UNICODE (_wgetenv()) * routines and stores both versions of each environment variable in parallel * (and secretly updates both when you set one or the other), but it uses CP_ACP * to do the conversion rather than CP_UTF8. * * Since everything in the git code base is UTF8, we define the mingw_ routines * to access the CRT using the UNICODE routines and manually convert them to * UTF8. This also avoids round-trip problems. * * This also helps with our linkage, since "_wenviron" is publicly exported * from the CRT. But to access "_environ" we would have to statically link * to the CRT (/MT). * * We require NO_SETENV (and let gitsetenv() call our mingw_putenv). */ #define getenv mingw_getenv #define putenv mingw_putenv #define unsetenv mingw_putenv char *mingw_getenv(const char *name); int mingw_putenv(const char *name); int mingw_gethostname(char *host, int namelen); #define gethostname mingw_gethostname struct hostent *mingw_gethostbyname(const char *host); #define gethostbyname mingw_gethostbyname int mingw_getaddrinfo(const char *node, const char *service, const struct addrinfo *hints, struct addrinfo **res); #define getaddrinfo mingw_getaddrinfo int mingw_socket(int domain, int type, int protocol); #define socket mingw_socket int mingw_connect(int sockfd, struct sockaddr *sa, size_t sz); #define connect mingw_connect int mingw_bind(int sockfd, struct sockaddr *sa, size_t sz); #define bind mingw_bind int mingw_setsockopt(int sockfd, int lvl, int optname, void *optval, int optlen); #define setsockopt mingw_setsockopt int mingw_shutdown(int sockfd, int how); #define shutdown mingw_shutdown int mingw_listen(int sockfd, int backlog); #define listen mingw_listen int mingw_accept(int sockfd, struct sockaddr *sa, socklen_t *sz); #define accept mingw_accept int mingw_rename(const char*, const char*); #define rename mingw_rename #if defined(USE_WIN32_MMAP) || defined(_MSC_VER) int mingw_getpagesize(void); #define getpagesize mingw_getpagesize #endif int win32_fsync_no_flush(int fd); #define fsync_no_flush win32_fsync_no_flush #define FSYNC_COMPONENTS_PLATFORM_DEFAULT (FSYNC_COMPONENTS_DEFAULT | FSYNC_COMPONENT_LOOSE_OBJECT) #define FSYNC_METHOD_DEFAULT (FSYNC_METHOD_BATCH) struct rlimit { unsigned int rlim_cur; }; #define RLIMIT_NOFILE 0 static inline int getrlimit(int resource, struct rlimit *rlp) { if (resource != RLIMIT_NOFILE) { errno = EINVAL; return -1; } rlp->rlim_cur = 2048; return 0; } /* * The unit of FILETIME is 100-nanoseconds since January 1, 1601, UTC. * Returns the 100-nanoseconds ("hekto nanoseconds") since the epoch. */ static inline long long filetime_to_hnsec(const FILETIME *ft) { long long winTime = ((long long)ft->dwHighDateTime << 32) + ft->dwLowDateTime; /* Windows to Unix Epoch conversion */ return winTime - 116444736000000000LL; } /* * Use mingw specific stat()/lstat()/fstat() implementations on Windows, * including our own struct stat with 64 bit st_size and nanosecond-precision * file times. */ #ifndef __MINGW64_VERSION_MAJOR #define off_t off64_t #define lseek _lseeki64 #ifndef _MSC_VER struct timespec { time_t tv_sec; long tv_nsec; }; #endif #endif static inline void filetime_to_timespec(const FILETIME *ft, struct timespec *ts) { long long hnsec = filetime_to_hnsec(ft); ts->tv_sec = (time_t)(hnsec / 10000000); ts->tv_nsec = (hnsec % 10000000) * 100; } struct mingw_stat { _dev_t st_dev; _ino_t st_ino; _mode_t st_mode; short st_nlink; short st_uid; short st_gid; _dev_t st_rdev; off64_t st_size; struct timespec st_atim; struct timespec st_mtim; struct timespec st_ctim; }; #define st_atime st_atim.tv_sec #define st_mtime st_mtim.tv_sec #define st_ctime st_ctim.tv_sec #ifdef stat #undef stat #endif #define stat mingw_stat int mingw_lstat(const char *file_name, struct stat *buf); int mingw_stat(const char *file_name, struct stat *buf); int mingw_fstat(int fd, struct stat *buf); #ifdef fstat #undef fstat #endif #define fstat mingw_fstat #ifdef lstat #undef lstat #endif extern int (*lstat)(const char *file_name, struct stat *buf); int mingw_utime(const char *file_name, const struct utimbuf *times); #define utime mingw_utime size_t mingw_strftime(char *s, size_t max, const char *format, const struct tm *tm); #define strftime mingw_strftime pid_t mingw_spawnvpe(const char *cmd, const char **argv, char **env, const char *dir, int fhin, int fhout, int fherr); int mingw_execvp(const char *cmd, char *const *argv); #define execvp mingw_execvp int mingw_execv(const char *cmd, char *const *argv); #define execv mingw_execv static inline unsigned int git_ntohl(unsigned int x) { return (unsigned int)ntohl(x); } #define ntohl git_ntohl sig_handler_t mingw_signal(int sig, sig_handler_t handler); #define signal mingw_signal int mingw_raise(int sig); #define raise mingw_raise /* * ANSI emulation wrappers */ int winansi_isatty(int fd); #define isatty winansi_isatty int winansi_dup2(int oldfd, int newfd); #define dup2 winansi_dup2 void winansi_init(void); HANDLE winansi_get_osfhandle(int fd); /* * git specific compatibility */ static inline void convert_slashes(char *path) { for (; *path; path++) if (*path == '\\') *path = '/'; } struct strbuf; int mingw_is_mount_point(struct strbuf *path); extern int (*win32_is_mount_point)(struct strbuf *path); #define is_mount_point win32_is_mount_point #define CAN_UNLINK_MOUNT_POINTS 1 #define PATH_SEP ';' char *mingw_query_user_email(void); #define query_user_email mingw_query_user_email struct strbuf; char *mingw_strbuf_realpath(struct strbuf *resolved, const char *path); #define platform_strbuf_realpath mingw_strbuf_realpath #if !defined(__MINGW64_VERSION_MAJOR) && (!defined(_MSC_VER) || _MSC_VER < 1800) #define PRIuMAX "I64u" #define PRId64 "I64d" #else #include #endif /** * Verifies that the specified path is owned by the user running the * current process. */ int is_path_owned_by_current_sid(const char *path, struct strbuf *report); #define is_path_owned_by_current_user is_path_owned_by_current_sid /** * Verifies that the given path is a valid one on Windows. * * In particular, path segments are disallowed which * * - end in a period or a space (except the special directories `.` and `..`). * * - contain any of the reserved characters, e.g. `:`, `;`, `*`, etc * * - correspond to reserved names (such as `AUX`, `PRN`, etc) * * The `allow_literal_nul` parameter controls whether the path `NUL` should * be considered valid (this makes sense e.g. before opening files, as it is * perfectly legitimate to open `NUL` on Windows, just as it is to open * `/dev/null` on Unix/Linux). * * Returns 1 upon success, otherwise 0. */ int is_valid_win32_path(const char *path, int allow_literal_nul); #define is_valid_path(path) is_valid_win32_path(path, 0) /** * Max length of long paths (exceeding MAX_PATH). The actual maximum supported * by NTFS is 32,767 (* sizeof(wchar_t)), but we choose an arbitrary smaller * value to limit required stack memory. */ #define MAX_LONG_PATH 4096 /** * Handles paths that would exceed the MAX_PATH limit of Windows Unicode APIs. * * With expand == false, the function checks for over-long paths and fails * with ENAMETOOLONG. The path parameter is not modified, except if cwd + path * exceeds max_path, but the resulting absolute path doesn't (e.g. due to * eliminating '..' components). The path parameter must point to a buffer * of max_path wide characters. * * With expand == true, an over-long path is automatically converted in place * to an absolute path prefixed with '\\?\', and the new length is returned. * The path parameter must point to a buffer of MAX_LONG_PATH wide characters. * * Parameters: * path: path to check and / or convert * len: size of path on input (number of wide chars without \0) * max_path: max short path length to check (usually MAX_PATH = 260, but just * 248 for CreateDirectoryW) * expand: false to only check the length, true to expand the path to a * '\\?\'-prefixed absolute path * * Return: * length of the resulting path, or -1 on failure * * Errors: * ENAMETOOLONG if path is too long */ int handle_long_path(wchar_t *path, int len, int max_path, int expand); /** * Converts UTF-8 encoded string to UTF-16LE. * * To support repositories with legacy-encoded file names, invalid UTF-8 bytes * 0xa0 - 0xff are converted to corresponding printable Unicode chars \u00a0 - * \u00ff, and invalid UTF-8 bytes 0x80 - 0x9f (which would make non-printable * Unicode) are converted to hex-code. * * Lead-bytes not followed by an appropriate number of trail-bytes, over-long * encodings and 4-byte encodings > \u10ffff are detected as invalid UTF-8. * * Maximum space requirement for the target buffer is two wide chars per UTF-8 * char (((strlen(utf) * 2) + 1) [* sizeof(wchar_t)]). * * The maximum space is needed only if the entire input string consists of * invalid UTF-8 bytes in range 0x80-0x9f, as per the following table: * * | | UTF-8 | UTF-16 | * Code point | UTF-8 sequence | bytes | words | ratio * --------------+-------------------+-------+--------+------- * 000000-00007f | 0-7f | 1 | 1 | 1 * 000080-0007ff | c2-df + 80-bf | 2 | 1 | 0.5 * 000800-00ffff | e0-ef + 2 * 80-bf | 3 | 1 | 0.33 * 010000-10ffff | f0-f4 + 3 * 80-bf | 4 | 2 (a) | 0.5 * invalid | 80-9f | 1 | 2 (b) | 2 * invalid | a0-ff | 1 | 1 | 1 * * (a) encoded as UTF-16 surrogate pair * (b) encoded as two hex digits * * Note that, while the UTF-8 encoding scheme can be extended to 5-byte, 6-byte * or even indefinite-byte sequences, the largest valid code point \u10ffff * encodes as only 4 UTF-8 bytes. * * Parameters: * wcs: wide char target buffer * utf: string to convert * wcslen: size of target buffer (in wchar_t's) * utflen: size of string to convert, or -1 if 0-terminated * * Returns: * length of converted string (_wcslen(wcs)), or -1 on failure * * Errors: * EINVAL: one of the input parameters is invalid (e.g. NULL) * ERANGE: the output buffer is too small */ int xutftowcsn(wchar_t *wcs, const char *utf, size_t wcslen, int utflen); /** * Simplified variant of xutftowcsn, assumes input string is \0-terminated. */ static inline int xutftowcs(wchar_t *wcs, const char *utf, size_t wcslen) { return xutftowcsn(wcs, utf, wcslen, -1); } /** * Simplified file system specific wrapper of xutftowcsn and handle_long_path. * Converts ERANGE to ENAMETOOLONG. If expand is true, wcs must be at least * MAX_LONG_PATH wide chars (see handle_long_path). */ static inline int xutftowcs_path_ex(wchar_t *wcs, const char *utf, size_t wcslen, int utflen, int max_path, int expand) { int result = xutftowcsn(wcs, utf, wcslen, utflen); if (result < 0 && errno == ERANGE) errno = ENAMETOOLONG; if (result >= 0) result = handle_long_path(wcs, result, max_path, expand); return result; } /** * Simplified file system specific variant of xutftowcsn, assumes output * buffer size is MAX_PATH wide chars and input string is \0-terminated, * fails with ENAMETOOLONG if input string is too long. Typically used for * Windows APIs that don't support long paths, e.g. SetCurrentDirectory, * LoadLibrary, CreateProcess... */ static inline int xutftowcs_path(wchar_t *wcs, const char *utf) { return xutftowcs_path_ex(wcs, utf, MAX_PATH, -1, MAX_PATH, 0); } /** * Simplified file system specific variant of xutftowcsn for Windows APIs * that support long paths via '\\?\'-prefix, assumes output buffer size is * MAX_LONG_PATH wide chars, fails with ENAMETOOLONG if input string is too * long. The 'core.longpaths' git-config option controls whether the path * is only checked or expanded to a long path. */ static inline int xutftowcs_long_path(wchar_t *wcs, const char *utf) { return xutftowcs_path_ex(wcs, utf, MAX_LONG_PATH, -1, MAX_PATH, are_long_paths_enabled()); } /** * Converts UTF-16LE encoded string to UTF-8. * * Maximum space requirement for the target buffer is three UTF-8 chars per * wide char ((_wcslen(wcs) * 3) + 1). * * The maximum space is needed only if the entire input string consists of * UTF-16 words in range 0x0800-0xd7ff or 0xe000-0xffff (i.e. \u0800-\uffff * modulo surrogate pairs), as per the following table: * * | | UTF-16 | UTF-8 | * Code point | UTF-16 sequence | words | bytes | ratio * --------------+-----------------------+--------+-------+------- * 000000-00007f | 0000-007f | 1 | 1 | 1 * 000080-0007ff | 0080-07ff | 1 | 2 | 2 * 000800-00ffff | 0800-d7ff / e000-ffff | 1 | 3 | 3 * 010000-10ffff | d800-dbff + dc00-dfff | 2 | 4 | 2 * * Note that invalid code points > 10ffff cannot be represented in UTF-16. * * Parameters: * utf: target buffer * wcs: wide string to convert * utflen: size of target buffer * * Returns: * length of converted string, or -1 on failure * * Errors: * EINVAL: one of the input parameters is invalid (e.g. NULL) * ERANGE: the output buffer is too small */ int xwcstoutf(char *utf, const wchar_t *wcs, size_t utflen); /* * A critical section used in the implementation of the spawn * functions (mingw_spawnv[p]e()) and waitpid(). Initialised in * the replacement main() macro below. */ extern CRITICAL_SECTION pinfo_cs; /* * Git, like most portable C applications, implements a main() function. On * Windows, this main() function would receive parameters encoded in the * current locale, but Git for Windows would prefer UTF-8 encoded parameters. * * To make that happen, we still declare main() here, and then declare and * implement wmain() (which is the Unicode variant of main()) and compile with * -municode. This wmain() function reencodes the parameters from UTF-16 to * UTF-8 format, sets up a couple of other things as required on Windows, and * then hands off to the main() function. */ int wmain(int argc, const wchar_t **w_argv); int main(int argc, const char **argv); /* * For debugging: if a problem occurs, say, in a Git process that is spawned * from another Git process which in turn is spawned from yet another Git * process, it can be quite daunting to figure out what is going on. * * Call this function to open a new MinTTY (this assumes you are in Git for * Windows' SDK) with a GDB that attaches to the current process right away. */ void open_in_gdb(void); /* * Used by Pthread API implementation for Windows */ int err_win_to_posix(DWORD winerr); /* * Check current process is inside Windows Container. */ int is_inside_windows_container(void);