diff options
Diffstat (limited to 'compat/mingw.c')
-rw-r--r-- | compat/mingw.c | 340 |
1 files changed, 261 insertions, 79 deletions
diff --git a/compat/mingw.c b/compat/mingw.c index 45733f9e04..bed417875e 100644 --- a/compat/mingw.c +++ b/compat/mingw.c @@ -1,8 +1,123 @@ #include "../git-compat-util.h" +#include "win32.h" +#include <conio.h> #include "../strbuf.h" unsigned int _CRT_fmode = _O_BINARY; +static int err_win_to_posix(DWORD winerr) +{ + int error = ENOSYS; + switch(winerr) { + case ERROR_ACCESS_DENIED: error = EACCES; break; + case ERROR_ACCOUNT_DISABLED: error = EACCES; break; + case ERROR_ACCOUNT_RESTRICTION: error = EACCES; break; + case ERROR_ALREADY_ASSIGNED: error = EBUSY; break; + case ERROR_ALREADY_EXISTS: error = EEXIST; break; + case ERROR_ARITHMETIC_OVERFLOW: error = ERANGE; break; + case ERROR_BAD_COMMAND: error = EIO; break; + case ERROR_BAD_DEVICE: error = ENODEV; break; + case ERROR_BAD_DRIVER_LEVEL: error = ENXIO; break; + case ERROR_BAD_EXE_FORMAT: error = ENOEXEC; break; + case ERROR_BAD_FORMAT: error = ENOEXEC; break; + case ERROR_BAD_LENGTH: error = EINVAL; break; + case ERROR_BAD_PATHNAME: error = ENOENT; break; + case ERROR_BAD_PIPE: error = EPIPE; break; + case ERROR_BAD_UNIT: error = ENODEV; break; + case ERROR_BAD_USERNAME: error = EINVAL; break; + case ERROR_BROKEN_PIPE: error = EPIPE; break; + case ERROR_BUFFER_OVERFLOW: error = ENAMETOOLONG; break; + case ERROR_BUSY: error = EBUSY; break; + case ERROR_BUSY_DRIVE: error = EBUSY; break; + case ERROR_CALL_NOT_IMPLEMENTED: error = ENOSYS; break; + case ERROR_CANNOT_MAKE: error = EACCES; break; + case ERROR_CANTOPEN: error = EIO; break; + case ERROR_CANTREAD: error = EIO; break; + case ERROR_CANTWRITE: error = EIO; break; + case ERROR_CRC: error = EIO; break; + case ERROR_CURRENT_DIRECTORY: error = EACCES; break; + case ERROR_DEVICE_IN_USE: error = EBUSY; break; + case ERROR_DEV_NOT_EXIST: error = ENODEV; break; + case ERROR_DIRECTORY: error = EINVAL; break; + case ERROR_DIR_NOT_EMPTY: error = ENOTEMPTY; break; + case ERROR_DISK_CHANGE: error = EIO; break; + case ERROR_DISK_FULL: error = ENOSPC; break; + case ERROR_DRIVE_LOCKED: error = EBUSY; break; + case ERROR_ENVVAR_NOT_FOUND: error = EINVAL; break; + case ERROR_EXE_MARKED_INVALID: error = ENOEXEC; break; + case ERROR_FILENAME_EXCED_RANGE: error = ENAMETOOLONG; break; + case ERROR_FILE_EXISTS: error = EEXIST; break; + case ERROR_FILE_INVALID: error = ENODEV; break; + case ERROR_FILE_NOT_FOUND: error = ENOENT; break; + case ERROR_GEN_FAILURE: error = EIO; break; + case ERROR_HANDLE_DISK_FULL: error = ENOSPC; break; + case ERROR_INSUFFICIENT_BUFFER: error = ENOMEM; break; + case ERROR_INVALID_ACCESS: error = EACCES; break; + case ERROR_INVALID_ADDRESS: error = EFAULT; break; + case ERROR_INVALID_BLOCK: error = EFAULT; break; + case ERROR_INVALID_DATA: error = EINVAL; break; + case ERROR_INVALID_DRIVE: error = ENODEV; break; + case ERROR_INVALID_EXE_SIGNATURE: error = ENOEXEC; break; + case ERROR_INVALID_FLAGS: error = EINVAL; break; + case ERROR_INVALID_FUNCTION: error = ENOSYS; break; + case ERROR_INVALID_HANDLE: error = EBADF; break; + case ERROR_INVALID_LOGON_HOURS: error = EACCES; break; + case ERROR_INVALID_NAME: error = EINVAL; break; + case ERROR_INVALID_OWNER: error = EINVAL; break; + case ERROR_INVALID_PARAMETER: error = EINVAL; break; + case ERROR_INVALID_PASSWORD: error = EPERM; break; + case ERROR_INVALID_PRIMARY_GROUP: error = EINVAL; break; + case ERROR_INVALID_SIGNAL_NUMBER: error = EINVAL; break; + case ERROR_INVALID_TARGET_HANDLE: error = EIO; break; + case ERROR_INVALID_WORKSTATION: error = EACCES; break; + case ERROR_IO_DEVICE: error = EIO; break; + case ERROR_IO_INCOMPLETE: error = EINTR; break; + case ERROR_LOCKED: error = EBUSY; break; + case ERROR_LOCK_VIOLATION: error = EACCES; break; + case ERROR_LOGON_FAILURE: error = EACCES; break; + case ERROR_MAPPED_ALIGNMENT: error = EINVAL; break; + case ERROR_META_EXPANSION_TOO_LONG: error = E2BIG; break; + case ERROR_MORE_DATA: error = EPIPE; break; + case ERROR_NEGATIVE_SEEK: error = ESPIPE; break; + case ERROR_NOACCESS: error = EFAULT; break; + case ERROR_NONE_MAPPED: error = EINVAL; break; + case ERROR_NOT_ENOUGH_MEMORY: error = ENOMEM; break; + case ERROR_NOT_READY: error = EAGAIN; break; + case ERROR_NOT_SAME_DEVICE: error = EXDEV; break; + case ERROR_NO_DATA: error = EPIPE; break; + case ERROR_NO_MORE_SEARCH_HANDLES: error = EIO; break; + case ERROR_NO_PROC_SLOTS: error = EAGAIN; break; + case ERROR_NO_SUCH_PRIVILEGE: error = EACCES; break; + case ERROR_OPEN_FAILED: error = EIO; break; + case ERROR_OPEN_FILES: error = EBUSY; break; + case ERROR_OPERATION_ABORTED: error = EINTR; break; + case ERROR_OUTOFMEMORY: error = ENOMEM; break; + case ERROR_PASSWORD_EXPIRED: error = EACCES; break; + case ERROR_PATH_BUSY: error = EBUSY; break; + case ERROR_PATH_NOT_FOUND: error = ENOENT; break; + case ERROR_PIPE_BUSY: error = EBUSY; break; + case ERROR_PIPE_CONNECTED: error = EPIPE; break; + case ERROR_PIPE_LISTENING: error = EPIPE; break; + case ERROR_PIPE_NOT_CONNECTED: error = EPIPE; break; + case ERROR_PRIVILEGE_NOT_HELD: error = EACCES; break; + case ERROR_READ_FAULT: error = EIO; break; + case ERROR_SEEK: error = EIO; break; + case ERROR_SEEK_ON_DEVICE: error = ESPIPE; break; + case ERROR_SHARING_BUFFER_EXCEEDED: error = ENFILE; break; + case ERROR_SHARING_VIOLATION: error = EACCES; break; + case ERROR_STACK_OVERFLOW: error = ENOMEM; break; + case ERROR_SWAPERROR: error = ENOENT; break; + case ERROR_TOO_MANY_MODULES: error = EMFILE; break; + case ERROR_TOO_MANY_OPEN_FILES: error = EMFILE; break; + case ERROR_UNRECOGNIZED_MEDIA: error = ENXIO; break; + case ERROR_UNRECOGNIZED_VOLUME: error = ENODEV; break; + case ERROR_WAIT_NO_CHILDREN: error = ECHILD; break; + case ERROR_WRITE_FAULT: error = EIO; break; + case ERROR_WRITE_PROTECT: error = EROFS; break; + } + return error; +} + #undef open int mingw_open (const char *filename, int oflags, ...) { @@ -31,12 +146,6 @@ static inline time_t filetime_to_time_t(const FILETIME *ft) return (time_t)winTime; } -static inline size_t size_to_blocks(size_t s) -{ - return (s+511)/512; -} - -extern int _getdrive( void ); /* We keep the do_lstat code in a separate function to avoid recursion. * When a path ends with a slash, the stat will fail with ENOENT. In * this case, we strip the trailing slashes and stat again. @@ -45,46 +154,20 @@ static int do_lstat(const char *file_name, struct stat *buf) { WIN32_FILE_ATTRIBUTE_DATA fdata; - if (GetFileAttributesExA(file_name, GetFileExInfoStandard, &fdata)) { - int fMode = S_IREAD; - if (fdata.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) - fMode |= S_IFDIR; - else - fMode |= S_IFREG; - if (!(fdata.dwFileAttributes & FILE_ATTRIBUTE_READONLY)) - fMode |= S_IWRITE; - + if (!(errno = get_file_attr(file_name, &fdata))) { buf->st_ino = 0; buf->st_gid = 0; buf->st_uid = 0; - buf->st_mode = fMode; - buf->st_size = fdata.nFileSizeLow; /* Can't use nFileSizeHigh, since it's not a stat64 */ - buf->st_blocks = size_to_blocks(buf->st_size); - buf->st_dev = _getdrive() - 1; + buf->st_nlink = 1; + buf->st_mode = file_attr_to_st_mode(fdata.dwFileAttributes); + buf->st_size = fdata.nFileSizeLow | + (((off_t)fdata.nFileSizeHigh)<<32); + buf->st_dev = buf->st_rdev = 0; /* not used by Git */ buf->st_atime = filetime_to_time_t(&(fdata.ftLastAccessTime)); buf->st_mtime = filetime_to_time_t(&(fdata.ftLastWriteTime)); buf->st_ctime = filetime_to_time_t(&(fdata.ftCreationTime)); - errno = 0; return 0; } - - switch (GetLastError()) { - case ERROR_ACCESS_DENIED: - case ERROR_SHARING_VIOLATION: - case ERROR_LOCK_VIOLATION: - case ERROR_SHARING_BUFFER_EXCEEDED: - errno = EACCES; - break; - case ERROR_BUFFER_OVERFLOW: - errno = ENAMETOOLONG; - break; - case ERROR_NOT_ENOUGH_MEMORY: - errno = ENOMEM; - break; - default: - errno = ENOENT; - break; - } return -1; } @@ -94,7 +177,7 @@ static int do_lstat(const char *file_name, struct stat *buf) * complete. Note that Git stat()s are redirected to mingw_lstat() * too, since Windows doesn't really handle symlinks that well. */ -int mingw_lstat(const char *file_name, struct mingw_stat *buf) +int mingw_lstat(const char *file_name, struct stat *buf) { int namelen; static char alt_name[PATH_MAX]; @@ -122,8 +205,7 @@ int mingw_lstat(const char *file_name, struct mingw_stat *buf) } #undef fstat -#undef stat -int mingw_fstat(int fd, struct mingw_stat *buf) +int mingw_fstat(int fd, struct stat *buf) { HANDLE fh = (HANDLE)_get_osfhandle(fd); BY_HANDLE_FILE_INFORMATION fdata; @@ -133,39 +215,18 @@ int mingw_fstat(int fd, struct mingw_stat *buf) return -1; } /* direct non-file handles to MS's fstat() */ - if (GetFileType(fh) != FILE_TYPE_DISK) { - struct stat st; - if (fstat(fd, &st)) - return -1; - buf->st_ino = st.st_ino; - buf->st_gid = st.st_gid; - buf->st_uid = st.st_uid; - buf->st_mode = st.st_mode; - buf->st_size = st.st_size; - buf->st_blocks = size_to_blocks(buf->st_size); - buf->st_dev = st.st_dev; - buf->st_atime = st.st_atime; - buf->st_mtime = st.st_mtime; - buf->st_ctime = st.st_ctime; - return 0; - } + if (GetFileType(fh) != FILE_TYPE_DISK) + return _fstati64(fd, buf); if (GetFileInformationByHandle(fh, &fdata)) { - int fMode = S_IREAD; - if (fdata.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) - fMode |= S_IFDIR; - else - fMode |= S_IFREG; - if (!(fdata.dwFileAttributes & FILE_ATTRIBUTE_READONLY)) - fMode |= S_IWRITE; - buf->st_ino = 0; buf->st_gid = 0; buf->st_uid = 0; - buf->st_mode = fMode; - buf->st_size = fdata.nFileSizeLow; /* Can't use nFileSizeHigh, since it's not a stat64 */ - buf->st_blocks = size_to_blocks(buf->st_size); - buf->st_dev = _getdrive() - 1; + buf->st_nlink = 1; + buf->st_mode = file_attr_to_st_mode(fdata.dwFileAttributes); + buf->st_size = fdata.nFileSizeLow | + (((off_t)fdata.nFileSizeHigh)<<32); + buf->st_dev = buf->st_rdev = 0; /* not used by Git */ buf->st_atime = filetime_to_time_t(&(fdata.ftLastAccessTime)); buf->st_mtime = filetime_to_time_t(&(fdata.ftLastWriteTime)); buf->st_ctime = filetime_to_time_t(&(fdata.ftCreationTime)); @@ -283,8 +344,13 @@ int poll(struct pollfd *ufds, unsigned int nfds, int timeout) { int i, pending; - if (timeout != -1) + if (timeout >= 0) { + if (nfds == 0) { + Sleep(timeout); + return 0; + } return errno = EINVAL, error("poll timeout not supported"); + } /* When there is only one fd to wait for, then we pretend that * input is available and let the actual wait happen when the @@ -331,7 +397,7 @@ repeat: * its own input data to become available. But since * the process (pack-objects) is itself CPU intensive, * it will happily pick up the time slice that we are - * relinguishing here. + * relinquishing here. */ Sleep(0); goto repeat; @@ -392,7 +458,7 @@ static const char *quote_arg(const char *arg) const char *p = arg; if (!*p) force_quotes = 1; while (*p) { - if (isspace(*p) || *p == '*' || *p == '?' || *p == '{') + if (isspace(*p) || *p == '*' || *p == '?' || *p == '{' || *p == '\'') force_quotes = 1; else if (*p == '"') n++; @@ -460,8 +526,8 @@ static const char *parse_interpreter(const char *cmd) if (buf[0] != '#' || buf[1] != '!') return NULL; buf[n] = '\0'; - p = strchr(buf, '\n'); - if (!p) + p = buf + strcspn(buf, "\r\n"); + if (!*p) return NULL; *p = '\0'; @@ -497,7 +563,7 @@ static char **get_path_split(void) if (!n) return NULL; - path = xmalloc((n+1)*sizeof(char*)); + path = xmalloc((n+1)*sizeof(char *)); p = envpath; i = 0; do { @@ -586,12 +652,16 @@ static pid_t mingw_spawnve(const char *cmd, const char **argv, char **env, * would normally create a console window. But * since we'll be redirecting std streams, we do * not need the console. + * It is necessary to use DETACHED_PROCESS + * instead of CREATE_NO_WINDOW to make ssh + * recognize that it has no console. */ - flags = CREATE_NO_WINDOW; + flags = DETACHED_PROCESS; } else { /* There is already a console. If we specified - * CREATE_NO_WINDOW here, too, Windows would + * DETACHED_PROCESS here, too, Windows would * disassociate the child from the console. + * The same is true for CREATE_NO_WINDOW. * Go figure! */ flags = 0; @@ -865,7 +935,9 @@ int mingw_connect(int sockfd, struct sockaddr *sa, size_t sz) #undef rename int mingw_rename(const char *pold, const char *pnew) { - DWORD attrs; + DWORD attrs, gle; + int tries = 0; + static const int delay[] = { 0, 1, 10, 20, 40 }; /* * Try native rename() first to get errno right. @@ -875,10 +947,12 @@ int mingw_rename(const char *pold, const char *pnew) return 0; if (errno != EEXIST) return -1; +repeat: if (MoveFileEx(pold, pnew, MOVEFILE_REPLACE_EXISTING)) return 0; /* TODO: translate more errors */ - if (GetLastError() == ERROR_ACCESS_DENIED && + gle = GetLastError(); + if (gle == ERROR_ACCESS_DENIED && (attrs = GetFileAttributes(pnew)) != INVALID_FILE_ATTRIBUTES) { if (attrs & FILE_ATTRIBUTE_DIRECTORY) { errno = EISDIR; @@ -888,10 +962,23 @@ int mingw_rename(const char *pold, const char *pnew) SetFileAttributes(pnew, attrs & ~FILE_ATTRIBUTE_READONLY)) { if (MoveFileEx(pold, pnew, MOVEFILE_REPLACE_EXISTING)) return 0; + gle = GetLastError(); /* revert file attributes on failure */ SetFileAttributes(pnew, attrs); } } + if (tries < ARRAY_SIZE(delay) && gle == ERROR_ACCESS_DENIED) { + /* + * We assume that some other process had the source or + * destination file open at the wrong moment and retry. + * In order to give the other process a higher chance to + * complete its operation, we give up our time slice now. + * If we have to retry again, we do sleep a bit. + */ + Sleep(delay[tries]); + tries++; + goto repeat; + } errno = EACCES; return -1; } @@ -1049,3 +1136,98 @@ void mingw_open_html(const char *unixpath) printf("Launching default browser to display HTML ...\n"); ShellExecute(NULL, "open", htmlpath, NULL, "\\", 0); } + +int link(const char *oldpath, const char *newpath) +{ + typedef BOOL WINAPI (*T)(const char*, const char*, LPSECURITY_ATTRIBUTES); + static T create_hard_link = NULL; + if (!create_hard_link) { + create_hard_link = (T) GetProcAddress( + GetModuleHandle("kernel32.dll"), "CreateHardLinkA"); + if (!create_hard_link) + create_hard_link = (T)-1; + } + if (create_hard_link == (T)-1) { + errno = ENOSYS; + return -1; + } + if (!create_hard_link(newpath, oldpath, NULL)) { + errno = err_win_to_posix(GetLastError()); + return -1; + } + return 0; +} + +char *getpass(const char *prompt) +{ + struct strbuf buf = STRBUF_INIT; + + fputs(prompt, stderr); + for (;;) { + char c = _getch(); + if (c == '\r' || c == '\n') + break; + strbuf_addch(&buf, c); + } + fputs("\n", stderr); + return strbuf_detach(&buf, NULL); +} + +#ifndef NO_MINGW_REPLACE_READDIR +/* MinGW readdir implementation to avoid extra lstats for Git */ +struct mingw_DIR +{ + struct _finddata_t dd_dta; /* disk transfer area for this dir */ + struct mingw_dirent dd_dir; /* Our own implementation, including d_type */ + long dd_handle; /* _findnext handle */ + int dd_stat; /* 0 = next entry to read is first entry, -1 = off the end, positive = 0 based index of next entry */ + char dd_name[1]; /* given path for dir with search pattern (struct is extended) */ +}; + +struct dirent *mingw_readdir(DIR *dir) +{ + WIN32_FIND_DATAA buf; + HANDLE handle; + struct mingw_DIR *mdir = (struct mingw_DIR*)dir; + + if (!dir->dd_handle) { + errno = EBADF; /* No set_errno for mingw */ + return NULL; + } + + if (dir->dd_handle == (long)INVALID_HANDLE_VALUE && dir->dd_stat == 0) + { + handle = FindFirstFileA(dir->dd_name, &buf); + DWORD lasterr = GetLastError(); + dir->dd_handle = (long)handle; + if (handle == INVALID_HANDLE_VALUE && (lasterr != ERROR_NO_MORE_FILES)) { + errno = err_win_to_posix(lasterr); + return NULL; + } + } else if (dir->dd_handle == (long)INVALID_HANDLE_VALUE) { + return NULL; + } else if (!FindNextFileA((HANDLE)dir->dd_handle, &buf)) { + DWORD lasterr = GetLastError(); + FindClose((HANDLE)dir->dd_handle); + dir->dd_handle = (long)INVALID_HANDLE_VALUE; + /* POSIX says you shouldn't set errno when readdir can't + find any more files; so, if another error we leave it set. */ + if (lasterr != ERROR_NO_MORE_FILES) + errno = err_win_to_posix(lasterr); + return NULL; + } + + /* We get here if `buf' contains valid data. */ + strcpy(dir->dd_dir.d_name, buf.cFileName); + ++dir->dd_stat; + + /* Set file type, based on WIN32_FIND_DATA */ + mdir->dd_dir.d_type = 0; + if (buf.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) + mdir->dd_dir.d_type |= DT_DIR; + else + mdir->dd_dir.d_type |= DT_REG; + + return (struct dirent*)&dir->dd_dir; +} +#endif // !NO_MINGW_REPLACE_READDIR |