X-Git-Url: https://wimlib.net/git/?p=wimlib;a=blobdiff_plain;f=src%2Fwin32.c;h=2977ffc8b1b810ae5476808e4762aaa70f0fa1ee;hp=0fd7508a66b406d62981a1268176331872505113;hb=fb964811a120ad28cac62a9a3343def5bf474f03;hpb=8c2fbf8ae771c66c20e664155f0a34fb44cbe6ee diff --git a/src/win32.c b/src/win32.c index 0fd7508a..2977ffc8 100644 --- a/src/win32.c +++ b/src/win32.c @@ -48,6 +48,7 @@ #define MAX_GET_SD_ACCESS_DENIED_WARNINGS 1 #define MAX_GET_SACL_PRIV_NOTHELD_WARNINGS 1 #define MAX_CREATE_HARD_LINK_WARNINGS 5 +#define MAX_CREATE_SOFT_LINK_WARNINGS 5 struct win32_capture_state { unsigned long num_get_sd_access_denied; unsigned long num_get_sacl_priv_notheld; @@ -78,6 +79,279 @@ win32_error(u32 err_code) # define win32_error(err_code) #endif /* !ENABLE_ERROR_MESSAGES */ +static int +win32_error_to_errno(DWORD err_code) +{ + /* This mapping is that used in Cygwin. + * Some of these choices are arbitrary. */ + switch (err_code) { + case ERROR_ACCESS_DENIED: + return EACCES; + case ERROR_ACTIVE_CONNECTIONS: + return EAGAIN; + case ERROR_ALREADY_EXISTS: + return EEXIST; + case ERROR_BAD_DEVICE: + return ENODEV; + case ERROR_BAD_EXE_FORMAT: + return ENOEXEC; + case ERROR_BAD_NETPATH: + return ENOENT; + case ERROR_BAD_NET_NAME: + return ENOENT; + case ERROR_BAD_NET_RESP: + return ENOSYS; + case ERROR_BAD_PATHNAME: + return ENOENT; + case ERROR_BAD_PIPE: + return EINVAL; + case ERROR_BAD_UNIT: + return ENODEV; + case ERROR_BAD_USERNAME: + return EINVAL; + case ERROR_BEGINNING_OF_MEDIA: + return EIO; + case ERROR_BROKEN_PIPE: + return EPIPE; + case ERROR_BUSY: + return EBUSY; + case ERROR_BUS_RESET: + return EIO; + case ERROR_CALL_NOT_IMPLEMENTED: + return ENOSYS; + case ERROR_CANNOT_MAKE: + return EPERM; + case ERROR_CHILD_NOT_COMPLETE: + return EBUSY; + case ERROR_COMMITMENT_LIMIT: + return EAGAIN; + case ERROR_CRC: + return EIO; + case ERROR_DEVICE_DOOR_OPEN: + return EIO; + case ERROR_DEVICE_IN_USE: + return EAGAIN; + case ERROR_DEVICE_REQUIRES_CLEANING: + return EIO; + case ERROR_DIRECTORY: + return ENOTDIR; + case ERROR_DIR_NOT_EMPTY: + return ENOTEMPTY; + case ERROR_DISK_CORRUPT: + return EIO; + case ERROR_DISK_FULL: + return ENOSPC; +#ifdef ENOTUNIQ + case ERROR_DUP_NAME: + return ENOTUNIQ; +#endif + case ERROR_EAS_DIDNT_FIT: + return ENOSPC; + case ERROR_EAS_NOT_SUPPORTED: + return ENOTSUP; + case ERROR_EA_LIST_INCONSISTENT: + return EINVAL; + case ERROR_EA_TABLE_FULL: + return ENOSPC; + case ERROR_END_OF_MEDIA: + return ENOSPC; + case ERROR_EOM_OVERFLOW: + return EIO; + case ERROR_EXE_MACHINE_TYPE_MISMATCH: + return ENOEXEC; + case ERROR_EXE_MARKED_INVALID: + return ENOEXEC; + case ERROR_FILEMARK_DETECTED: + return EIO; + case ERROR_FILENAME_EXCED_RANGE: + return ENAMETOOLONG; + case ERROR_FILE_CORRUPT: + return EEXIST; + case ERROR_FILE_EXISTS: + return EEXIST; + case ERROR_FILE_INVALID: + return ENXIO; + case ERROR_FILE_NOT_FOUND: + return ENOENT; + case ERROR_HANDLE_DISK_FULL: + return ENOSPC; +#ifdef ENODATA + case ERROR_HANDLE_EOF: + return ENODATA; +#endif + case ERROR_INVALID_ADDRESS: + return EINVAL; + case ERROR_INVALID_AT_INTERRUPT_TIME: + return EINTR; + case ERROR_INVALID_BLOCK_LENGTH: + return EIO; + case ERROR_INVALID_DATA: + return EINVAL; + case ERROR_INVALID_DRIVE: + return ENODEV; + case ERROR_INVALID_EA_NAME: + return EINVAL; + case ERROR_INVALID_EXE_SIGNATURE: + return ENOEXEC; +#ifdef EBADRQC + case ERROR_INVALID_FUNCTION: + return EBADRQC; +#endif + case ERROR_INVALID_HANDLE: + return EBADF; + case ERROR_INVALID_NAME: + return ENOENT; + case ERROR_INVALID_PARAMETER: + return EINVAL; + case ERROR_INVALID_SIGNAL_NUMBER: + return EINVAL; + case ERROR_IOPL_NOT_ENABLED: + return ENOEXEC; + case ERROR_IO_DEVICE: + return EIO; + case ERROR_IO_INCOMPLETE: + return EAGAIN; + case ERROR_IO_PENDING: + return EAGAIN; + case ERROR_LOCK_VIOLATION: + return EBUSY; + case ERROR_MAX_THRDS_REACHED: + return EAGAIN; + case ERROR_META_EXPANSION_TOO_LONG: + return EINVAL; + case ERROR_MOD_NOT_FOUND: + return ENOENT; +#ifdef EMSGSIZE + case ERROR_MORE_DATA: + return EMSGSIZE; +#endif + case ERROR_NEGATIVE_SEEK: + return EINVAL; + case ERROR_NETNAME_DELETED: + return ENOENT; + case ERROR_NOACCESS: + return EFAULT; + case ERROR_NONE_MAPPED: + return EINVAL; + case ERROR_NONPAGED_SYSTEM_RESOURCES: + return EAGAIN; +#ifdef ENOLINK + case ERROR_NOT_CONNECTED: + return ENOLINK; +#endif + case ERROR_NOT_ENOUGH_MEMORY: + return ENOMEM; + case ERROR_NOT_OWNER: + return EPERM; +#ifdef ENOMEDIUM + case ERROR_NOT_READY: + return ENOMEDIUM; +#endif + case ERROR_NOT_SAME_DEVICE: + return EXDEV; + case ERROR_NOT_SUPPORTED: + return ENOSYS; + case ERROR_NO_DATA: + return EPIPE; + case ERROR_NO_DATA_DETECTED: + return EIO; +#ifdef ENOMEDIUM + case ERROR_NO_MEDIA_IN_DRIVE: + return ENOMEDIUM; +#endif +#ifdef ENMFILE + case ERROR_NO_MORE_FILES: + return ENMFILE; +#endif +#ifdef ENMFILE + case ERROR_NO_MORE_ITEMS: + return ENMFILE; +#endif + case ERROR_NO_MORE_SEARCH_HANDLES: + return ENFILE; + case ERROR_NO_PROC_SLOTS: + return EAGAIN; + case ERROR_NO_SIGNAL_SENT: + return EIO; + case ERROR_NO_SYSTEM_RESOURCES: + return EFBIG; + case ERROR_NO_TOKEN: + return EINVAL; + case ERROR_OPEN_FAILED: + return EIO; + case ERROR_OPEN_FILES: + return EAGAIN; + case ERROR_OUTOFMEMORY: + return ENOMEM; + case ERROR_PAGED_SYSTEM_RESOURCES: + return EAGAIN; + case ERROR_PAGEFILE_QUOTA: + return EAGAIN; + case ERROR_PATH_NOT_FOUND: + return ENOENT; + case ERROR_PIPE_BUSY: + return EBUSY; + case ERROR_PIPE_CONNECTED: + return EBUSY; +#ifdef ECOMM + case ERROR_PIPE_LISTENING: + return ECOMM; + case ERROR_PIPE_NOT_CONNECTED: + return ECOMM; +#endif + case ERROR_POSSIBLE_DEADLOCK: + return EDEADLOCK; + case ERROR_PRIVILEGE_NOT_HELD: + return EPERM; + case ERROR_PROCESS_ABORTED: + return EFAULT; + case ERROR_PROC_NOT_FOUND: + return ESRCH; +#ifdef ENONET + case ERROR_REM_NOT_LIST: + return ENONET; +#endif + case ERROR_SECTOR_NOT_FOUND: + return EINVAL; + case ERROR_SEEK: + return EINVAL; + case ERROR_SETMARK_DETECTED: + return EIO; + case ERROR_SHARING_BUFFER_EXCEEDED: + return ENOLCK; + case ERROR_SHARING_VIOLATION: + return EBUSY; + case ERROR_SIGNAL_PENDING: + return EBUSY; + case ERROR_SIGNAL_REFUSED: + return EIO; +#ifdef ELIBBAD + case ERROR_SXS_CANT_GEN_ACTCTX: + return ELIBBAD; +#endif + case ERROR_THREAD_1_INACTIVE: + return EINVAL; + case ERROR_TOO_MANY_LINKS: + return EMLINK; + case ERROR_TOO_MANY_OPEN_FILES: + return EMFILE; + case ERROR_WAIT_NO_CHILDREN: + return ECHILD; + case ERROR_WORKING_SET_QUOTA: + return EAGAIN; + case ERROR_WRITE_PROTECT: + return EROFS; + default: + return -1; + } +} + +static void +set_errno_from_GetLastError() +{ + errno = win32_error_to_errno(GetLastError()); +} + /* Pointers to functions that are not available on all targetted versions of * Windows (XP and later). NOTE: The WINAPI annotations seem to be important; I * assume it specifies a certain calling convention. */ @@ -739,7 +1013,7 @@ win32_capture_try_rpfix(u8 *rpbuf, u16 *rpbuflen_p, else ret = -ret; } else { - if (ret == RP_EXCLUDED) { + if (rp_status == RP_EXCLUDED) { size_t print_name_nchars = rpdata.print_name_nbytes / 2; wchar_t print_name0[print_name_nchars + 1]; print_name0[print_name_nchars] = L'\0'; @@ -1460,7 +1734,7 @@ win32_set_reparse_data(HANDLE h, const struct wim_inode *inode, const struct wim_lookup_table_entry *lte, const wchar_t *path, - const struct apply_args *args) + struct apply_args *args) { int ret; u8 rpbuf[REPARSE_POINT_MAX_SIZE]; @@ -1512,15 +1786,30 @@ win32_set_reparse_data(HANDLE h, NULL /* lpOverlapped */)) { DWORD err = GetLastError(); - ERROR("Failed to set reparse data on \"%ls\"", path); - win32_error(err); if (err == ERROR_ACCESS_DENIED || err == ERROR_PRIVILEGE_NOT_HELD) - return WIMLIB_ERR_INSUFFICIENT_PRIVILEGES_TO_EXTRACT; - else if (inode->i_reparse_tag == WIM_IO_REPARSE_TAG_SYMLINK || - inode->i_reparse_tag == WIM_IO_REPARSE_TAG_MOUNT_POINT) - return WIMLIB_ERR_LINK; - else - return WIMLIB_ERR_WRITE; + { + args->num_soft_links_failed++; + if (args->num_soft_links_failed <= MAX_CREATE_SOFT_LINK_WARNINGS) { + WARNING("Can't set reparse data on \"%ls\": Access denied!\n" + " You may be trying to extract a symbolic " + "link without the\n" + " SeCreateSymbolicLink privilege, which by " + "default non-Administrator\n" + " accounts do not have.", path); + } + if (args->num_hard_links_failed == MAX_CREATE_HARD_LINK_WARNINGS) { + WARNING("Suppressing further warnings regarding failure to extract\n" + " reparse points due to insufficient privileges..."); + } + } else { + ERROR("Failed to set reparse data on \"%ls\"", path); + win32_error(err); + if (inode->i_reparse_tag == WIM_IO_REPARSE_TAG_SYMLINK || + inode->i_reparse_tag == WIM_IO_REPARSE_TAG_MOUNT_POINT) + return WIMLIB_ERR_LINK; + else + return WIMLIB_ERR_WRITE; + } } return 0; } @@ -1724,7 +2013,7 @@ win32_encrypted_import_cb(unsigned char *data, void *_ctx, len = min(len, wim_resource_size(lte) - ctx->offset); - if (read_partial_wim_resource_into_buf(lte, len, ctx->offset, data, false)) + if (read_partial_wim_resource_into_buf(lte, len, ctx->offset, data)) return ERROR_READ_FAULT; ctx->offset += len; @@ -2435,12 +2724,13 @@ win32_try_hard_link(const wchar_t *output_path, const struct wim_inode *inode, return WIMLIB_ERR_LINK; } else { args->num_hard_links_failed++; - if (args->num_hard_links_failed < MAX_CREATE_HARD_LINK_WARNINGS) { + if (args->num_hard_links_failed <= MAX_CREATE_HARD_LINK_WARNINGS) { WARNING("Can't create hard link \"%ls => %ls\":\n" " Volume does not support hard links!\n" " Falling back to extracting a copy of the file.", output_path, inode->i_extracted_file); - } else if (args->num_hard_links_failed == MAX_CREATE_HARD_LINK_WARNINGS) { + } + if (args->num_hard_links_failed == MAX_CREATE_HARD_LINK_WARNINGS) { WARNING("Suppressing further hard linking warnings..."); } return -1; @@ -2515,8 +2805,8 @@ win32_do_apply_dentry(const wchar_t *output_path, int win32_do_apply_dentry_timestamps(const wchar_t *path, size_t path_num_chars, - const struct wim_dentry *dentry, - const struct apply_args *args) + struct wim_dentry *dentry, + struct apply_args *args) { DWORD err; HANDLE h; @@ -2573,25 +2863,18 @@ out: int fsync(int fd) { - DWORD err; HANDLE h; h = (HANDLE)_get_osfhandle(fd); - if (h == INVALID_HANDLE_VALUE) { - err = GetLastError(); - ERROR("Could not get Windows handle for file descriptor"); - win32_error(err); - errno = EBADF; - return -1; - } - if (!FlushFileBuffers(h)) { - err = GetLastError(); - ERROR("Could not flush file buffers to disk"); - win32_error(err); - errno = EIO; - return -1; - } + if (h == INVALID_HANDLE_VALUE) + goto err; + if (!FlushFileBuffers(h)) + goto err_set_errno; return 0; +err_set_errno: + set_errno_from_GetLastError(); +err: + return -1; } /* Use the Win32 API to get the number of processors */ @@ -2610,8 +2893,8 @@ wchar_t * realpath(const wchar_t *path, wchar_t *resolved_path) { DWORD ret; - wimlib_assert(resolved_path == NULL); DWORD err; + wimlib_assert(resolved_path == NULL); ret = GetFullPathNameW(path, 0, NULL, NULL); if (!ret) { @@ -2631,8 +2914,7 @@ realpath(const wchar_t *path, wchar_t *resolved_path) } goto out; fail_win32: - win32_error(err); - errno = -1; + errno = win32_error_to_errno(err); out: return resolved_path; } @@ -2645,12 +2927,7 @@ win32_rename_replacement(const wchar_t *oldpath, const wchar_t *newpath) if (MoveFileExW(oldpath, newpath, MOVEFILE_REPLACE_EXISTING)) { return 0; } else { - /* As usual, the possible error values are not documented */ - DWORD err = GetLastError(); - ERROR("MoveFileEx(): Can't rename \"%ls\" to \"%ls\"", - oldpath, newpath); - win32_error(err); - errno = -1; + set_errno_from_GetLastError(); return -1; } } @@ -2691,9 +2968,7 @@ fail_close_handle: fail: if (err == NO_ERROR) err = GetLastError(); - ERROR("Can't truncate \"%ls\" to %"PRIu64" bytes", path, size); - win32_error(err); - errno = -1; + errno = win32_error_to_errno(err); return -1; } @@ -2713,4 +2988,93 @@ win32_strerror_r_replacement(int errnum, wchar_t *buf, size_t buflen) return 0; } +static int +do_pread_or_pwrite(int fd, void *buf, size_t count, off_t offset, + bool is_pwrite) +{ + HANDLE h; + LARGE_INTEGER orig_offset; + DWORD bytes_read_or_written; + LARGE_INTEGER relative_offset; + OVERLAPPED overlapped; + BOOL bret; + + wimlib_assert(count <= 0xffffffff); + + h = (HANDLE)_get_osfhandle(fd); + if (h == INVALID_HANDLE_VALUE) + goto err; + + /* Get original position */ + relative_offset.QuadPart = 0; + if (!SetFilePointerEx(h, relative_offset, &orig_offset, FILE_CURRENT)) + goto err_set_errno; + + memset(&overlapped, 0, sizeof(overlapped)); + overlapped.Offset = offset; + overlapped.OffsetHigh = offset >> 32; + + /* Do the read or write at the specified offset */ + if (is_pwrite) + bret = WriteFile(h, buf, count, &bytes_read_or_written, &overlapped); + else + bret = ReadFile(h, buf, count, &bytes_read_or_written, &overlapped); + if (!bret) + goto err_set_errno; + + /* Restore the original position */ + if (!SetFilePointerEx(h, orig_offset, NULL, FILE_BEGIN)) + goto err_set_errno; + + return bytes_read_or_written; +err_set_errno: + set_errno_from_GetLastError(); +err: + return -1; +} + +/* Dumb Windows implementation of pread(). It temporarily changes the file + * offset, so it is not safe to use with readers/writers on the same file + * descriptor. */ +extern ssize_t +win32_pread(int fd, void *buf, size_t count, off_t offset) +{ + return do_pread_or_pwrite(fd, buf, count, offset, false); +} + +/* Dumb Windows implementation of pwrite(). It temporarily changes the file + * offset, so it is not safe to use with readers/writers on the same file + * descriptor. */ +extern ssize_t +win32_pwrite(int fd, const void *buf, size_t count, off_t offset) +{ + return do_pread_or_pwrite(fd, (void*)buf, count, offset, true); +} + +/* Dumb Windows implementation of writev(). It writes the vectors one at a + * time. */ +extern ssize_t +win32_writev(int fd, const struct iovec *iov, int iovcnt) +{ + ssize_t total_bytes_written = 0; + + if (iovcnt <= 0) { + errno = EINVAL; + return -1; + } + for (int i = 0; i < iovcnt; i++) { + ssize_t bytes_written; + + bytes_written = write(fd, iov[i].iov_base, iov[i].iov_len); + if (bytes_written >= 0) + total_bytes_written += bytes_written; + if (bytes_written != iov[i].iov_len) { + if (total_bytes_written == 0) + total_bytes_written = -1; + break; + } + } + return total_bytes_written; +} + #endif /* __WIN32__ */