#include <fcntl.h>
#include <ctype.h>
#include <signal.h>
+#include <sys/file.h>
#include <sys/time.h>
+#include <sys/utime.h>
/* must include CRT headers *before* config.h */
#include "config.h"
#undef read
#undef write
+#undef strerror
+
#include "lisp.h"
#include <pwd.h>
extern Lisp_Object Vw32_downcase_file_names;
extern Lisp_Object Vw32_generate_fake_inodes;
extern Lisp_Object Vw32_get_true_file_attributes;
+extern Lisp_Object Vw32_num_mouse_buttons;
static char startup_dir[MAXPATHLEN];
HANDLE dir_handle;
int len = 0;
+ /* must be valid filename, no wild cards or other invalid characters */
+ if (strpbrk (name, "*?|<>\""))
+ return 0;
+
dir_handle = FindFirstFile (name, &find_data);
if (dir_handle != INVALID_HANDLE_VALUE)
{
len = parse_root (full, &p);
memcpy (o, full, len);
o += len;
+ *o = '\0';
size -= len;
- do
+ while (p != NULL && *p)
{
q = p;
p = strchr (q, '\\');
else
return FALSE;
}
- while (p != NULL && *p);
return TRUE;
}
+int
+is_unc_volume (const char *filename)
+{
+ const char *ptr = filename;
+
+ if (!IS_DIRECTORY_SEP (ptr[0]) || !IS_DIRECTORY_SEP (ptr[1]) || !ptr[2])
+ return 0;
+
+ if (strpbrk (ptr + 2, "*?|<>\"\\/"))
+ return 0;
+
+ return 1;
+}
/* Routines that are no-ops on NT but are defined to get Emacs to compile. */
return 0;
}
+int
+sigmask (int sig)
+{
+ return 0;
+}
+
int
sigblock (int sig)
{
return 0;
}
+int
+sigunblock (int sig)
+{
+ return 0;
+}
+
int
setpgrp (int pid, int gid)
{
extern Lisp_Object Vsystem_configuration;
void
-init_environment ()
+init_environment (char ** argv)
{
+ int len;
+ static const char * const tempdirs[] = {
+ "$TMPDIR", "$TEMP", "$TMP", "c:/"
+ };
+ int i;
+ const int imax = sizeof (tempdirs) / sizeof (tempdirs[0]);
+
+ /* Make sure they have a usable $TMPDIR. Many Emacs functions use
+ temporary files and assume "/tmp" if $TMPDIR is unset, which
+ will break on DOS/Windows. Refuse to work if we cannot find
+ a directory, not even "c:/", usable for that purpose. */
+ for (i = 0; i < imax ; i++)
+ {
+ const char *tmp = tempdirs[i];
+
+ if (*tmp == '$')
+ tmp = getenv (tmp + 1);
+ /* Note that `access' can lie to us if the directory resides on a
+ read-only filesystem, like CD-ROM or a write-protected floppy.
+ The only way to be really sure is to actually create a file and
+ see if it succeeds. But I think that's too much to ask. */
+ if (tmp && access (tmp, D_OK) == 0)
+ {
+ char * var = alloca (strlen (tmp) + 8);
+ sprintf (var, "TMPDIR=%s", tmp);
+ putenv (var);
+ break;
+ }
+ }
+ if (i >= imax)
+ cmd_error_internal
+ (Fcons (Qerror,
+ Fcons (build_string ("no usable temporary directories found!!"),
+ Qnil)),
+ "While setting TMPDIR: ");
+
/* Check for environment variables and use registry if they don't exist */
{
int i;
{
char *p;
- char modname[MAX_PATH];
+ static char modname[MAX_PATH];
if (!GetModuleFileName (NULL, modname, MAX_PATH))
abort ();
*p = 0;
SetCurrentDirectory (modname);
+
+ /* Ensure argv[0] has the full path to Emacs. */
+ *p = '\\';
+ argv[0] = modname;
}
+ /* Determine if there is a middle mouse button, to allow parse_button
+ to decide whether right mouse events should be mouse-2 or
+ mouse-3. */
+ XSETINT (Vw32_num_mouse_buttons, GetSystemMetrics (SM_CMOUSEBUTTONS));
+
init_user_info ();
}
get_emacs_configuration (void)
{
char *arch, *oem, *os;
+ int build_num;
/* Determine the processor type. */
switch (get_processor_type ())
/* Let oem be "*" until we figure out how to decode the OEM field. */
oem = "*";
- os = (GetVersion () & OS_WIN95) ? "windows95" : "nt";
+ switch (osinfo_cache.dwPlatformId) {
+ case VER_PLATFORM_WIN32_NT:
+ os = "nt";
+ build_num = osinfo_cache.dwBuildNumber;
+ break;
+ case VER_PLATFORM_WIN32_WINDOWS:
+ if (osinfo_cache.dwMinorVersion == 0) {
+ os = "windows95";
+ } else {
+ os = "windows98";
+ }
+ build_num = LOWORD (osinfo_cache.dwBuildNumber);
+ break;
+ case VER_PLATFORM_WIN32s:
+ /* Not supported, should not happen. */
+ os = "windows32s";
+ build_num = LOWORD (osinfo_cache.dwBuildNumber);
+ break;
+ default:
+ os = "unknown";
+ build_num = 0;
+ break;
+ }
+
+ if (osinfo_cache.dwPlatformId == VER_PLATFORM_WIN32_NT) {
+ sprintf (configuration_buffer, "%s-%s-%s%d.%d.%d", arch, oem, os,
+ get_w32_major_version (), get_w32_minor_version (), build_num);
+ } else {
+ sprintf (configuration_buffer, "%s-%s-%s.%d", arch, oem, os, build_num);
+ }
- sprintf (configuration_buffer, "%s-%s-%s%d.%d", arch, oem, os,
- get_w32_major_version (), get_w32_minor_version ());
return configuration_buffer;
}
return shortname;
}
+static int
+is_exec (const char * name)
+{
+ char * p = strrchr (name, '.');
+ return
+ (p != NULL
+ && (stricmp (p, ".exe") == 0 ||
+ stricmp (p, ".com") == 0 ||
+ stricmp (p, ".bat") == 0 ||
+ stricmp (p, ".cmd") == 0));
+}
+
/* Emulate the Unix directory procedures opendir, closedir,
and readdir. We can't use the procedures supplied in sysdep.c,
so we provide them here. */
static char dir_pathname[MAXPATHLEN+1];
static WIN32_FIND_DATA dir_find_data;
+/* Support shares on a network resource as subdirectories of a read-only
+ root directory. */
+static HANDLE wnet_enum_handle = INVALID_HANDLE_VALUE;
+HANDLE open_unc_volume (char *);
+char *read_unc_volume (HANDLE, char *, int);
+void close_unc_volume (HANDLE);
+
DIR *
opendir (char *filename)
{
/* Opening is done by FindFirstFile. However, a read is inherent to
this operation, so we defer the open until read time. */
- if (!(dirp = (DIR *) malloc (sizeof (DIR))))
- return NULL;
if (dir_find_handle != INVALID_HANDLE_VALUE)
return NULL;
+ if (wnet_enum_handle != INVALID_HANDLE_VALUE)
+ return NULL;
+
+ if (is_unc_volume (filename))
+ {
+ wnet_enum_handle = open_unc_volume (filename);
+ if (wnet_enum_handle == INVALID_HANDLE_VALUE)
+ return NULL;
+ }
+
+ if (!(dirp = (DIR *) malloc (sizeof (DIR))))
+ return NULL;
dirp->dd_fd = 0;
dirp->dd_loc = 0;
FindClose (dir_find_handle);
dir_find_handle = INVALID_HANDLE_VALUE;
}
+ else if (wnet_enum_handle != INVALID_HANDLE_VALUE)
+ {
+ close_unc_volume (wnet_enum_handle);
+ wnet_enum_handle = INVALID_HANDLE_VALUE;
+ }
xfree ((char *) dirp);
}
struct direct *
readdir (DIR *dirp)
{
+ if (wnet_enum_handle != INVALID_HANDLE_VALUE)
+ {
+ if (!read_unc_volume (wnet_enum_handle,
+ dir_find_data.cFileName,
+ MAX_PATH))
+ return NULL;
+ }
/* If we aren't dir_finding, do a find-first, otherwise do a find-next. */
- if (dir_find_handle == INVALID_HANDLE_VALUE)
+ else if (dir_find_handle == INVALID_HANDLE_VALUE)
{
char filename[MAXNAMLEN + 3];
int ln;
return &dir_static;
}
+HANDLE
+open_unc_volume (char *path)
+{
+ NETRESOURCE nr;
+ HANDLE henum;
+ int result;
+
+ nr.dwScope = RESOURCE_GLOBALNET;
+ nr.dwType = RESOURCETYPE_DISK;
+ nr.dwDisplayType = RESOURCEDISPLAYTYPE_SERVER;
+ nr.dwUsage = RESOURCEUSAGE_CONTAINER;
+ nr.lpLocalName = NULL;
+ nr.lpRemoteName = map_w32_filename (path, NULL);
+ nr.lpComment = NULL;
+ nr.lpProvider = NULL;
+
+ result = WNetOpenEnum(RESOURCE_GLOBALNET, RESOURCETYPE_DISK,
+ RESOURCEUSAGE_CONNECTABLE, &nr, &henum);
+
+ if (result == NO_ERROR)
+ return henum;
+ else
+ return INVALID_HANDLE_VALUE;
+}
+
+char *
+read_unc_volume (HANDLE henum, char *readbuf, int size)
+{
+ int count;
+ int result;
+ int bufsize = 512;
+ char *buffer;
+ char *ptr;
+
+ count = 1;
+ buffer = alloca (bufsize);
+ result = WNetEnumResource (wnet_enum_handle, &count, buffer, &bufsize);
+ if (result != NO_ERROR)
+ return NULL;
+
+ /* WNetEnumResource returns \\resource\share...skip forward to "share". */
+ ptr = ((LPNETRESOURCE) buffer)->lpRemoteName;
+ ptr += 2;
+ while (*ptr && !IS_DIRECTORY_SEP (*ptr)) ptr++;
+ ptr++;
+
+ strncpy (readbuf, ptr, size);
+ return readbuf;
+}
+
+void
+close_unc_volume (HANDLE henum)
+{
+ if (henum != INVALID_HANDLE_VALUE)
+ WNetCloseEnum (henum);
+}
+
+DWORD
+unc_volume_file_attributes (char *path)
+{
+ HANDLE henum;
+ DWORD attrs;
+
+ henum = open_unc_volume (path);
+ if (henum == INVALID_HANDLE_VALUE)
+ return -1;
+
+ attrs = FILE_ATTRIBUTE_READONLY | FILE_ATTRIBUTE_DIRECTORY;
+
+ close_unc_volume (henum);
+
+ return attrs;
+}
+
/* Shadow some MSVC runtime functions to map requests for long filenames
to reasonable short names if necessary. This was originally added to
int
sys_access (const char * path, int mode)
{
- return _access (map_w32_filename (path, NULL), mode);
+ DWORD attributes;
+
+ /* MSVC implementation doesn't recognize D_OK. */
+ path = map_w32_filename (path, NULL);
+ if (is_unc_volume (path))
+ {
+ attributes = unc_volume_file_attributes (path);
+ if (attributes == -1) {
+ errno = EACCES;
+ return -1;
+ }
+ }
+ else if ((attributes = GetFileAttributes (path)) == -1)
+ {
+ /* Should try mapping GetLastError to errno; for now just indicate
+ that path doesn't exist. */
+ errno = EACCES;
+ return -1;
+ }
+ if ((mode & X_OK) != 0 && !is_exec (path))
+ {
+ errno = EACCES;
+ return -1;
+ }
+ if ((mode & W_OK) != 0 && (attributes & FILE_ATTRIBUTE_READONLY) != 0)
+ {
+ errno = EACCES;
+ return -1;
+ }
+ if ((mode & D_OK) != 0 && (attributes & FILE_ATTRIBUTE_DIRECTORY) == 0)
+ {
+ errno = EACCES;
+ return -1;
+ }
+ return 0;
}
int
int
sys_rename (const char * oldname, const char * newname)
{
+ int result;
char temp[MAX_PATH];
- DWORD attr;
/* MoveFile on Windows 95 doesn't correctly change the short file name
alias in a number of circumstances (it is not easy to predict when
if (os_subtype == OS_WIN95)
{
+ char * o;
char * p;
+ int i = 0;
+
+ oldname = map_w32_filename (oldname, NULL);
+ if (o = strrchr (oldname, '\\'))
+ o++;
+ else
+ o = (char *) oldname;
if (p = strrchr (temp, '\\'))
p++;
else
p = temp;
- /* Force temp name to require a manufactured 8.3 alias - this
- seems to make the second rename work properly. */
- strcpy (p, "_rename_temp.XXXXXX");
- sys_mktemp (temp);
- if (rename (map_w32_filename (oldname, NULL), temp) < 0)
+
+ do
+ {
+ /* Force temp name to require a manufactured 8.3 alias - this
+ seems to make the second rename work properly. */
+ sprintf (p, "_.%s.%u", o, i);
+ i++;
+ result = rename (oldname, temp);
+ }
+ /* This loop must surely terminate! */
+ while (result < 0 && (errno == EEXIST || errno == EACCES));
+ if (result < 0)
return -1;
}
/* Emulate Unix behaviour - newname is deleted if it already exists
(at least if it is a file; don't do this for directories).
- However, don't do this if we are just changing the case of the file
- name - we will end up deleting the file we are trying to rename! */
+
+ Since we mustn't do this if we are just changing the case of the
+ file name (we would end up deleting the file we are trying to
+ rename!), we let rename detect if the destination file already
+ exists - that way we avoid the possible pitfalls of trying to
+ determine ourselves whether two names really refer to the same
+ file, which is not always possible in the general case. (Consider
+ all the permutations of shared or subst'd drives, etc.) */
+
newname = map_w32_filename (newname, NULL);
+ result = rename (temp, newname);
- /* TODO: Use GetInformationByHandle (on NT) to ensure newname and temp
- do not refer to the same file, eg. through share aliases. */
- if (stricmp (newname, temp) != 0
- && (attr = GetFileAttributes (newname)) != -1
- && (attr & FILE_ATTRIBUTE_DIRECTORY) == 0)
- {
- _chmod (newname, 0666);
- _unlink (newname);
- }
+ if (result < 0
+ && (errno == EEXIST || errno == EACCES)
+ && _chmod (newname, 0666) == 0
+ && _unlink (newname) == 0)
+ result = rename (temp, newname);
- return rename (temp, newname);
+ return result;
}
int
int
sys_unlink (const char * path)
{
- return _unlink (map_w32_filename (path, NULL));
+ path = map_w32_filename (path, NULL);
+
+ /* On Unix, unlink works without write permission. */
+ _chmod (path, 0666);
+ return _unlink (path);
}
static FILETIME utc_base_ft;
return (time_t) (ret * 1e-7);
}
-#if 0
-/* in case we ever have need of this */
void
convert_from_time_t (time_t time, FILETIME * pft)
{
/* time in 100ns units since 1-Jan-1601 */
tmp = (long double) time * 1e7 + utc_base;
pft->dwHighDateTime = (DWORD) (tmp / (4096.0 * 1024 * 1024));
- pft->dwLowDateTime = (DWORD) (tmp - pft->dwHighDateTime);
+ pft->dwLowDateTime = (DWORD) (tmp - (4096.0 * 1024 * 1024) * pft->dwHighDateTime);
}
-#endif
#if 0
/* No reason to keep this; faking inode values either by hashing or even
int
stat (const char * path, struct stat * buf)
{
- char * name;
+ char *name, *r;
WIN32_FIND_DATA wfd;
HANDLE fh;
DWORD fake_inode;
}
name = (char *) map_w32_filename (path, &path);
- /* must be valid filename, no wild cards */
- if (strchr (name, '*') || strchr (name, '?'))
+ /* must be valid filename, no wild cards or other invalid characters */
+ if (strpbrk (name, "*?|<>\""))
{
errno = ENOENT;
return -1;
}
+ /* If name is "c:/.." or "/.." then stat "c:/" or "/". */
+ r = IS_DEVICE_SEP (name[1]) ? &name[2] : name;
+ if (IS_DIRECTORY_SEP (r[0]) && r[1] == '.' && r[2] == '.' && r[3] == '\0')
+ {
+ r[1] = r[2] = '\0';
+ }
+
/* Remove trailing directory separator, unless name is the root
directory of a drive or UNC volume in which case ensure there
is a trailing separator. */
&& (IS_DIRECTORY_SEP (*path) || *path == 0));
name = strcpy (alloca (len + 2), name);
- if (rootdir)
+ if (is_unc_volume (name))
+ {
+ DWORD attrs = unc_volume_file_attributes (name);
+
+ if (attrs == -1)
+ return -1;
+
+ memset (&wfd, 0, sizeof (wfd));
+ wfd.dwFileAttributes = attrs;
+ wfd.ftCreationTime = utc_base_ft;
+ wfd.ftLastAccessTime = utc_base_ft;
+ wfd.ftLastWriteTime = utc_base_ft;
+ strcpy (wfd.cFileName, name);
+ }
+ else if (rootdir)
{
if (!IS_DIRECTORY_SEP (name[len-1]))
strcat (name, "\\");
/* (This is hacky, but helps when doing file completions on
network drives.) Optimize by using information available from
active readdir if possible. */
+ len = strlen (dir_pathname);
+ if (IS_DIRECTORY_SEP (dir_pathname[len-1]))
+ len--;
if (dir_find_handle != INVALID_HANDLE_VALUE
- && (len = strlen (dir_pathname)),
- strnicmp (name, dir_pathname, len) == 0
+ && strnicmp (name, dir_pathname, len) == 0
&& IS_DIRECTORY_SEP (name[len])
&& stricmp (name + len + 1, dir_static.d_name) == 0)
{
buf->st_nlink = 2; /* doesn't really matter */
fake_inode = 0; /* this doesn't either I think */
}
- else if (!NILP (Vw32_get_true_file_attributes))
+ else if (!NILP (Vw32_get_true_file_attributes)
+ /* No access rights required to get info. */
+ && (fh = CreateFile (name, 0, 0, NULL, OPEN_EXISTING, 0, NULL))
+ != INVALID_HANDLE_VALUE)
{
/* This is more accurate in terms of gettting the correct number
of links, but is quite slow (it is noticable when Emacs is
making a list of file name completions). */
BY_HANDLE_FILE_INFORMATION info;
- /* No access rights required to get info. */
- fh = CreateFile (name, 0, 0, NULL, OPEN_EXISTING, 0, NULL);
-
if (GetFileInformationByHandle (fh, &info))
{
- switch (GetFileType (fh))
- {
- case FILE_TYPE_DISK:
- buf->st_mode = _S_IFREG;
- break;
- case FILE_TYPE_PIPE:
- buf->st_mode = _S_IFIFO;
- break;
- case FILE_TYPE_CHAR:
- case FILE_TYPE_UNKNOWN:
- default:
- buf->st_mode = _S_IFCHR;
- }
buf->st_nlink = info.nNumberOfLinks;
/* Might as well use file index to fake inode values, but this
is not guaranteed to be unique unless we keep a handle open
not unique). Reputedly, there are at most 48 bits of info
(on NTFS, presumably less on FAT). */
fake_inode = info.nFileIndexLow ^ info.nFileIndexHigh;
- CloseHandle (fh);
}
else
{
- errno = EACCES;
- return -1;
+ buf->st_nlink = 1;
+ fake_inode = 0;
+ }
+
+ switch (GetFileType (fh))
+ {
+ case FILE_TYPE_DISK:
+ buf->st_mode = _S_IFREG;
+ break;
+ case FILE_TYPE_PIPE:
+ buf->st_mode = _S_IFIFO;
+ break;
+ case FILE_TYPE_CHAR:
+ case FILE_TYPE_UNKNOWN:
+ default:
+ buf->st_mode = _S_IFCHR;
}
+ CloseHandle (fh);
}
else
{
if (wfd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)
permission |= _S_IEXEC;
+ else if (is_exec (name))
+ permission |= _S_IEXEC;
+
+ buf->st_mode |= permission | (permission >> 3) | (permission >> 6);
+
+ return 0;
+}
+
+/* Provide fstat and utime as well as stat for consistent handling of
+ file timestamps. */
+int
+fstat (int desc, struct stat * buf)
+{
+ HANDLE fh = (HANDLE) _get_osfhandle (desc);
+ BY_HANDLE_FILE_INFORMATION info;
+ DWORD fake_inode;
+ int permission;
+
+ switch (GetFileType (fh) & ~FILE_TYPE_REMOTE)
+ {
+ case FILE_TYPE_DISK:
+ buf->st_mode = _S_IFREG;
+ if (!GetFileInformationByHandle (fh, &info))
+ {
+ errno = EACCES;
+ return -1;
+ }
+ break;
+ case FILE_TYPE_PIPE:
+ buf->st_mode = _S_IFIFO;
+ goto non_disk;
+ case FILE_TYPE_CHAR:
+ case FILE_TYPE_UNKNOWN:
+ default:
+ buf->st_mode = _S_IFCHR;
+ non_disk:
+ memset (&info, 0, sizeof (info));
+ info.dwFileAttributes = 0;
+ info.ftCreationTime = utc_base_ft;
+ info.ftLastAccessTime = utc_base_ft;
+ info.ftLastWriteTime = utc_base_ft;
+ }
+
+ if (info.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)
+ {
+ buf->st_mode = _S_IFDIR;
+ buf->st_nlink = 2; /* doesn't really matter */
+ fake_inode = 0; /* this doesn't either I think */
+ }
+ else
+ {
+ buf->st_nlink = info.nNumberOfLinks;
+ /* Might as well use file index to fake inode values, but this
+ is not guaranteed to be unique unless we keep a handle open
+ all the time (even then there are situations where it is
+ not unique). Reputedly, there are at most 48 bits of info
+ (on NTFS, presumably less on FAT). */
+ fake_inode = info.nFileIndexLow ^ info.nFileIndexHigh;
+ }
+
+ /* MSVC defines _ino_t to be short; other libc's might not. */
+ if (sizeof (buf->st_ino) == 2)
+ buf->st_ino = fake_inode ^ (fake_inode >> 16);
+ else
+ buf->st_ino = fake_inode;
+
+ /* consider files to belong to current user */
+ buf->st_uid = 0;
+ buf->st_gid = 0;
+
+ buf->st_dev = info.dwVolumeSerialNumber;
+ buf->st_rdev = info.dwVolumeSerialNumber;
+
+ buf->st_size = info.nFileSizeLow;
+
+ /* Convert timestamps to Unix format. */
+ buf->st_mtime = convert_time (info.ftLastWriteTime);
+ buf->st_atime = convert_time (info.ftLastAccessTime);
+ if (buf->st_atime == 0) buf->st_atime = buf->st_mtime;
+ buf->st_ctime = convert_time (info.ftCreationTime);
+ if (buf->st_ctime == 0) buf->st_ctime = buf->st_mtime;
+
+ /* determine rwx permissions */
+ if (info.dwFileAttributes & FILE_ATTRIBUTE_READONLY)
+ permission = _S_IREAD;
+ else
+ permission = _S_IREAD | _S_IWRITE;
+
+ if (info.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)
+ permission |= _S_IEXEC;
else
{
+#if 0 /* no way of knowing the filename */
char * p = strrchr (name, '.');
- if (p != NULL
- && (stricmp (p, ".exe") == 0 ||
- stricmp (p, ".com") == 0 ||
- stricmp (p, ".bat") == 0 ||
- stricmp (p, ".cmd") == 0))
+ if (p != NULL &&
+ (stricmp (p, ".exe") == 0 ||
+ stricmp (p, ".com") == 0 ||
+ stricmp (p, ".bat") == 0 ||
+ stricmp (p, ".cmd") == 0))
permission |= _S_IEXEC;
+#endif
}
buf->st_mode |= permission | (permission >> 3) | (permission >> 6);
return 0;
}
+int
+utime (const char *name, struct utimbuf *times)
+{
+ struct utimbuf deftime;
+ HANDLE fh;
+ FILETIME mtime;
+ FILETIME atime;
+
+ if (times == NULL)
+ {
+ deftime.modtime = deftime.actime = time (NULL);
+ times = &deftime;
+ }
+
+ /* Need write access to set times. */
+ fh = CreateFile (name, GENERIC_WRITE, FILE_SHARE_READ | FILE_SHARE_WRITE,
+ 0, OPEN_EXISTING, 0, NULL);
+ if (fh)
+ {
+ convert_from_time_t (times->actime, &atime);
+ convert_from_time_t (times->modtime, &mtime);
+ if (!SetFileTime (fh, NULL, &atime, &mtime))
+ {
+ CloseHandle (fh);
+ errno = EACCES;
+ return -1;
+ }
+ CloseHandle (fh);
+ }
+ else
+ {
+ errno = EINVAL;
+ return -1;
+ }
+ return 0;
+}
+
#ifdef HAVE_SOCKETS
/* Wrappers for winsock functions to map between our file descriptors
pfn_WSASetLastError (0);
}
+/* Extend strerror to handle the winsock-specific error codes. */
+struct {
+ int errnum;
+ char * msg;
+} _wsa_errlist[] = {
+ WSAEINTR , "Interrupted function call",
+ WSAEBADF , "Bad file descriptor",
+ WSAEACCES , "Permission denied",
+ WSAEFAULT , "Bad address",
+ WSAEINVAL , "Invalid argument",
+ WSAEMFILE , "Too many open files",
+
+ WSAEWOULDBLOCK , "Resource temporarily unavailable",
+ WSAEINPROGRESS , "Operation now in progress",
+ WSAEALREADY , "Operation already in progress",
+ WSAENOTSOCK , "Socket operation on non-socket",
+ WSAEDESTADDRREQ , "Destination address required",
+ WSAEMSGSIZE , "Message too long",
+ WSAEPROTOTYPE , "Protocol wrong type for socket",
+ WSAENOPROTOOPT , "Bad protocol option",
+ WSAEPROTONOSUPPORT , "Protocol not supported",
+ WSAESOCKTNOSUPPORT , "Socket type not supported",
+ WSAEOPNOTSUPP , "Operation not supported",
+ WSAEPFNOSUPPORT , "Protocol family not supported",
+ WSAEAFNOSUPPORT , "Address family not supported by protocol family",
+ WSAEADDRINUSE , "Address already in use",
+ WSAEADDRNOTAVAIL , "Cannot assign requested address",
+ WSAENETDOWN , "Network is down",
+ WSAENETUNREACH , "Network is unreachable",
+ WSAENETRESET , "Network dropped connection on reset",
+ WSAECONNABORTED , "Software caused connection abort",
+ WSAECONNRESET , "Connection reset by peer",
+ WSAENOBUFS , "No buffer space available",
+ WSAEISCONN , "Socket is already connected",
+ WSAENOTCONN , "Socket is not connected",
+ WSAESHUTDOWN , "Cannot send after socket shutdown",
+ WSAETOOMANYREFS , "Too many references", /* not sure */
+ WSAETIMEDOUT , "Connection timed out",
+ WSAECONNREFUSED , "Connection refused",
+ WSAELOOP , "Network loop", /* not sure */
+ WSAENAMETOOLONG , "Name is too long",
+ WSAEHOSTDOWN , "Host is down",
+ WSAEHOSTUNREACH , "No route to host",
+ WSAENOTEMPTY , "Buffer not empty", /* not sure */
+ WSAEPROCLIM , "Too many processes",
+ WSAEUSERS , "Too many users", /* not sure */
+ WSAEDQUOT , "Double quote in host name", /* really not sure */
+ WSAESTALE , "Data is stale", /* not sure */
+ WSAEREMOTE , "Remote error", /* not sure */
+
+ WSASYSNOTREADY , "Network subsystem is unavailable",
+ WSAVERNOTSUPPORTED , "WINSOCK.DLL version out of range",
+ WSANOTINITIALISED , "Winsock not initialized successfully",
+ WSAEDISCON , "Graceful shutdown in progress",
+#ifdef WSAENOMORE
+ WSAENOMORE , "No more operations allowed", /* not sure */
+ WSAECANCELLED , "Operation cancelled", /* not sure */
+ WSAEINVALIDPROCTABLE , "Invalid procedure table from service provider",
+ WSAEINVALIDPROVIDER , "Invalid service provider version number",
+ WSAEPROVIDERFAILEDINIT , "Unable to initialize a service provider",
+ WSASYSCALLFAILURE , "System call failured",
+ WSASERVICE_NOT_FOUND , "Service not found", /* not sure */
+ WSATYPE_NOT_FOUND , "Class type not found",
+ WSA_E_NO_MORE , "No more resources available", /* really not sure */
+ WSA_E_CANCELLED , "Operation already cancelled", /* really not sure */
+ WSAEREFUSED , "Operation refused", /* not sure */
+#endif
+
+ WSAHOST_NOT_FOUND , "Host not found",
+ WSATRY_AGAIN , "Authoritative host not found during name lookup",
+ WSANO_RECOVERY , "Non-recoverable error during name lookup",
+ WSANO_DATA , "Valid name, no data record of requested type",
+
+ -1, NULL
+};
+
+char *
+sys_strerror(int error_no)
+{
+ int i;
+ static char unknown_msg[40];
+
+ if (error_no >= 0 && error_no < _sys_nerr)
+ return _sys_errlist[error_no];
+
+ for (i = 0; _wsa_errlist[i].errnum >= 0; i++)
+ if (_wsa_errlist[i].errnum == error_no)
+ return _wsa_errlist[i].msg;
+
+ sprintf(unknown_msg, "Unidentified error: %d", error_no);
+ return unknown_msg;
+}
+
/* [andrewi 3-May-96] I've had conflicting results using both methods,
but I believe the method of keeping the socket handle separate (and
insuring it is not inheritable) is the correct one. */
if (!pfn_SetHandleInformation
|| !pfn_SetHandleInformation ((HANDLE) s,
HANDLE_FLAG_INHERIT,
- HANDLE_FLAG_INHERIT))
+ 0))
{
DuplicateHandle (parent,
(HANDLE) s,
*buffer++ = 0x0d;
count--;
nchars++;
+ fd_info[fd].flags &= ~FILE_LAST_CR;
}
/* presence of a child_process structure means we are operating in
{
case STATUS_READ_FAILED:
case STATUS_READ_ERROR:
- /* report normal EOF */
- return 0;
+ /* report normal EOF if nothing in buffer */
+ if (nchars <= 0)
+ fd_info[fd].flags |= FILE_AT_EOF;
+ return nchars;
case STATUS_READ_READY:
case STATUS_READ_IN_PROGRESS:
{
PeekNamedPipe ((HANDLE) _get_osfhandle (fd), NULL, 0, NULL, &waiting, NULL);
to_read = min (waiting, (DWORD) count);
-
- nchars += _read (fd, buffer, to_read);
+
+ if (to_read > 0)
+ nchars += _read (fd, buffer, to_read);
}
#ifdef HAVE_SOCKETS
else /* FILE_SOCKET */
#endif
}
else
- nchars += _read (fd, buffer, count);
+ {
+ int nread = _read (fd, buffer, count);
+ if (nread >= 0)
+ nchars += nread;
+ else if (nchars == 0)
+ nchars = nread;
+ }
+ if (nchars <= 0)
+ fd_info[fd].flags |= FILE_AT_EOF;
/* Perform text mode translation if required. */
- if ((fd_info[fd].flags & FILE_BINARY) == 0)
+ else if ((fd_info[fd].flags & FILE_BINARY) == 0)
{
nchars = crlf_to_lf (nchars, orig_buffer);
/* If buffer contains only CR, return that. To be absolutely
fd_info[fd].flags |= FILE_LAST_CR;
nchars--;
}
- else
- fd_info[fd].flags &= ~FILE_LAST_CR;
}
}
else
return nchars;
}
+static void
+check_windows_init_file ()
+{
+ extern int noninteractive, inhibit_window_system;
+
+ /* A common indication that Emacs is not installed properly is when
+ it cannot find the Windows installation file. If this file does
+ not exist in the expected place, tell the user. */
+
+ if (!noninteractive && !inhibit_window_system)
+ {
+ extern Lisp_Object Vwindow_system, Vload_path, Qfile_exists_p;
+ Lisp_Object objs[2];
+ Lisp_Object full_load_path;
+ Lisp_Object init_file;
+ int fd;
+
+ objs[0] = Vload_path;
+ objs[1] = decode_env_path (0, (getenv ("EMACSLOADPATH")));
+ full_load_path = Fappend (2, objs);
+ init_file = build_string ("term/w32-win");
+ fd = openp (full_load_path, init_file, ".el:.elc", NULL, 0);
+ if (fd < 0)
+ {
+ Lisp_Object load_path_print = Fprin1_to_string (full_load_path, Qnil);
+ char *init_file_name = XSTRING (init_file)->data;
+ char *load_path = XSTRING (load_path_print)->data;
+ char *buffer = alloca (1024);
+
+ sprintf (buffer,
+ "The Emacs Windows initialization file \"%s.el\" "
+ "could not be found in your Emacs installation. "
+ "Emacs checked the following directories for this file:\n"
+ "\n%s\n\n"
+ "When Emacs cannot find this file, it usually means that it "
+ "was not installed properly, or its distribution file was "
+ "not unpacked properly.\nSee the README.W32 file in the "
+ "top-level Emacs directory for more information.",
+ init_file_name, load_path);
+ MessageBox (NULL,
+ buffer,
+ "Emacs Abort Dialog",
+ MB_OK | MB_ICONEXCLAMATION | MB_TASKMODAL);
+ /* Use the low-level Emacs abort. */
+#undef abort
+ abort ();
+ }
+ else
+ {
+ close (fd);
+ }
+ }
+}
void
term_ntproc ()
(*drive)++;
}
}
+
+ /* Check to see if Emacs has been installed correctly. */
+ check_windows_init_file ();
}
/* end of nt.c */
HCoop / bpt / emacs.git / blobdiff