/*
This file is part of GNUnet.
- (C) 2001, 2002, 2005, 2006, 2009 Christian Grothoff (and other contributing authors)
+ (C) 2001--2012 Christian Grothoff (and other contributing authors)
GNUnet is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published
#define LOG_STRERROR_FILE(kind,syscall,filename) GNUNET_log_from_strerror_file (kind, "util", syscall, filename)
-#define DEBUG_NPIPE GNUNET_EXTRA_LOGGING
-
-#define DEBUG_PIPE GNUNET_EXTRA_LOGGING
-
/**
* Block size for IO for copying files.
*/
-#if defined(LINUX) || defined(CYGWIN)
+#if defined(LINUX) || defined(CYGWIN) || defined(GNU)
#include <sys/vfs.h>
#else
#if defined(SOMEBSD) || defined(DARWIN)
* GNUNET_YES if symbolic links should be included.
*/
int include_sym_links;
+
+ /**
+ * GNUNET_YES if mode is file-only (return total == -1 for directories).
+ */
+ int single_file_mode;
};
+#ifndef MINGW
+/**
+ * Translate GNUnet-internal permission bitmap to UNIX file
+ * access permission bitmap.
+ *
+ * @param perm file permissions, GNUnet style
+ * @return file permissions, UNIX style
+ */
static int
translate_unix_perms (enum GNUNET_DISK_AccessPermissions perm)
{
return mode;
}
+#endif
/**
#ifdef HAVE_STAT64
if (0 != STAT64 (fn, &buf))
{
- LOG_STRERROR_FILE (GNUNET_ERROR_TYPE_WARNING, "stat64", fn);
+ LOG_STRERROR_FILE (GNUNET_ERROR_TYPE_DEBUG, "stat64", fn);
return GNUNET_SYSERR;
}
#else
if (0 != STAT (fn, &buf))
{
- LOG_STRERROR_FILE (GNUNET_ERROR_TYPE_WARNING, "stat", fn);
+ LOG_STRERROR_FILE (GNUNET_ERROR_TYPE_DEBUG, "stat", fn);
return GNUNET_SYSERR;
}
#endif
+ if ((S_ISDIR (buf.st_mode)) && (gfsd->single_file_mode == GNUNET_YES))
+ {
+ errno = EISDIR;
+ return GNUNET_SYSERR;
+ }
if ((!S_ISLNK (buf.st_mode)) || (gfsd->include_sym_links == GNUNET_YES))
gfsd->total += buf.st_size;
if ((S_ISDIR (buf.st_mode)) && (0 == ACCESS (fn, X_OK)) &&
}
#ifdef MINGW
- LARGE_INTEGER li, new_pos;
+ LARGE_INTEGER li;
+ LARGE_INTEGER new_pos;
BOOL b;
static DWORD t[] = {[GNUNET_DISK_SEEK_SET] = FILE_BEGIN,
* of all sizes of files in the directory)
* @param includeSymLinks should symbolic links be
* included?
+ * @param singleFileMode GNUNET_YES to only get size of one file
+ * and return GNUNET_SYSERR for directories.
* @return GNUNET_SYSERR on error, GNUNET_OK on success
*/
int
GNUNET_DISK_file_size (const char *filename, uint64_t * size,
- int includeSymLinks)
+ int includeSymLinks, int singleFileMode)
{
struct GetFileSizeData gfsd;
int ret;
GNUNET_assert (size != NULL);
gfsd.total = 0;
gfsd.include_sym_links = includeSymLinks;
+ gfsd.single_file_mode = singleFileMode;
ret = getSizeRec (&gfsd, filename);
*size = gfsd.total;
return ret;
/**
- * Create an (empty) temporary file on disk. If the given name is not
- * an absolute path, the current 'TMPDIR' will be prepended. In any case,
- * 6 random characters will be appended to the name to create a unique
- * filename.
+ * Create the name for a temporary file or directory from a template.
*
- * @param t component to use for the name;
- * does NOT contain "XXXXXX" or "/tmp/".
- * @return NULL on error, otherwise name of fresh
- * file on disk in directory for temporary files
+ * @param t template (without XXXXX or "/tmp/")
+ * @return name ready for passing to 'mktemp' or 'mkdtemp', NULL on error
*/
-char *
-GNUNET_DISK_mktemp (const char *t)
+static char *
+mktemp_name (const char *t)
{
const char *tmpdir;
- int fd;
char *tmpl;
char *fn;
{
/* FIXME: This uses system codepage on W32, not UTF-8 */
tmpdir = getenv ("TMPDIR");
- tmpdir = tmpdir ? tmpdir : "/tmp";
+ if (NULL == tmpdir)
+ tmpdir = getenv ("TMP");
+ if (NULL == tmpdir)
+ tmpdir = getenv ("TEMP");
+ if (NULL == tmpdir)
+ tmpdir = "/tmp";
GNUNET_asprintf (&tmpl, "%s/%s%s", tmpdir, t, "XXXXXX");
}
else
#else
fn = tmpl;
#endif
- /* FIXME: why is this not MKSTEMP()? This function is implemented in plibc.
- * CG: really? If I put MKSTEMP here, I get a compilation error...
- * It will assume that fn is UTF-8-encoded, if compiled with UTF-8 support.
- */
- fd = mkstemp (fn);
- if (fd == -1)
+ return fn;
+}
+
+#if WINDOWS
+static char *
+mkdtemp (char *fn)
+{
+ char *random_fn;
+ char *tfn;
+ while (1)
+ {
+ tfn = GNUNET_strdup (fn);
+ random_fn = _mktemp (tfn);
+ if (NULL == random_fn)
+ {
+ GNUNET_free (tfn);
+ return NULL;
+ }
+ /* FIXME: assume fn to be UTF-8-encoded and do the right thing */
+ if (0 == CreateDirectoryA (tfn, NULL))
+ {
+ DWORD error = GetLastError ();
+ GNUNET_free (tfn);
+ if (ERROR_ALREADY_EXISTS == error)
+ continue;
+ return NULL;
+ }
+ break;
+ }
+ strcpy (fn, tfn);
+ return fn;
+}
+#endif
+
+/**
+ * Create an (empty) temporary directory on disk. If the given name is not
+ * an absolute path, the current 'TMPDIR' will be prepended. In any case,
+ * 6 random characters will be appended to the name to create a unique
+ * filename.
+ *
+ * @param t component to use for the name;
+ * does NOT contain "XXXXXX" or "/tmp/".
+ * @return NULL on error, otherwise name of fresh
+ * file on disk in directory for temporary files
+ */
+char *
+GNUNET_DISK_mkdtemp (const char *t)
+{
+ char *fn;
+
+ fn = mktemp_name (t);
+ if (fn != mkdtemp (fn))
+ {
+ LOG_STRERROR_FILE (GNUNET_ERROR_TYPE_ERROR, "mkstemp", fn);
+ GNUNET_free (fn);
+ return NULL;
+ }
+ return fn;
+}
+
+
+/**
+ * Create an (empty) temporary file on disk. If the given name is not
+ * an absolute path, the current 'TMPDIR' will be prepended. In any case,
+ * 6 random characters will be appended to the name to create a unique
+ * filename.
+ *
+ * @param t component to use for the name;
+ * does NOT contain "XXXXXX" or "/tmp/".
+ * @return NULL on error, otherwise name of fresh
+ * file on disk in directory for temporary files
+ */
+char *
+GNUNET_DISK_mktemp (const char *t)
+{
+ int fd;
+ char *fn;
+
+ fn = mktemp_name (t);
+ if (-1 == (fd = mkstemp (fn)))
{
LOG_STRERROR_FILE (GNUNET_ERROR_TYPE_ERROR, "mkstemp", fn);
GNUNET_free (fn);
}
GNUNET_free (path);
wcsncpy (szDrive, wpath, 3);
- GNUNET_free (wpath);
szDrive[3] = 0;
if (!GetDiskFreeSpaceW (szDrive, &dwDummy, &dwDummy, &dwBlocks, &dwDummy))
{
GNUNET_free (rdir);
return GNUNET_NO;
}
- if (ACCESS (rdir, R_OK) < 0)
+ if (ACCESS (rdir, F_OK) < 0)
{
LOG_STRERROR_FILE (GNUNET_ERROR_TYPE_WARNING, "access", rdir);
GNUNET_free (rdir);
#ifdef MINGW
DWORD bytesRead;
- if (h->type != GNUNET_PIPE)
+ if (h->type != GNUNET_DISK_HANLDE_TYPE_PIPE)
{
if (!ReadFile (h->h, result, len, &bytesRead, NULL))
{
}
else
{
-#if DEBUG_PIPE
- LOG (GNUNET_ERROR_TYPE_DEBUG, "It is a pipe trying to read\n");
-#endif
if (!ReadFile (h->h, result, len, &bytesRead, h->oOverlapRead))
{
if (GetLastError () != ERROR_IO_PENDING)
{
-#if DEBUG_PIPE
LOG (GNUNET_ERROR_TYPE_DEBUG, "Error reading from pipe: %u\n", GetLastError ());
-#endif
SetErrnoFromWinError (GetLastError ());
return GNUNET_SYSERR;
}
-#if DEBUG_PIPE
LOG (GNUNET_ERROR_TYPE_DEBUG, "Will get overlapped result\n");
-#endif
GetOverlappedResult (h->h, h->oOverlapRead, &bytesRead, TRUE);
}
-#if DEBUG_PIPE
- LOG (GNUNET_ERROR_TYPE_DEBUG, "Read %u bytes\n", bytesRead);
-#endif
+ LOG (GNUNET_ERROR_TYPE_DEBUG, "Read %u bytes from pipe\n", bytesRead);
}
return bytesRead;
#else
*/
ssize_t
GNUNET_DISK_file_read_non_blocking (const struct GNUNET_DISK_FileHandle * h,
- void *result, size_t len)
+ void *result,
+ size_t len)
{
if (h == NULL)
{
#ifdef MINGW
DWORD bytesRead;
- if (h->type != GNUNET_PIPE)
+ if (h->type != GNUNET_DISK_HANLDE_TYPE_PIPE)
{
if (!ReadFile (h->h, result, len, &bytesRead, NULL))
{
}
else
{
-#if DEBUG_PIPE
- LOG (GNUNET_ERROR_TYPE_DEBUG, "It is a pipe, trying to read\n");
-#endif
if (!ReadFile (h->h, result, len, &bytesRead, h->oOverlapRead))
{
if (GetLastError () != ERROR_IO_PENDING)
{
-#if DEBUG_PIPE
LOG (GNUNET_ERROR_TYPE_DEBUG, "Error reading from pipe: %u\n", GetLastError ());
-#endif
SetErrnoFromWinError (GetLastError ());
return GNUNET_SYSERR;
}
else
{
-#if DEBUG_PIPE
LOG (GNUNET_ERROR_TYPE_DEBUG,
"ReadFile() queued a read, cancelling\n");
-#endif
CancelIo (h->h);
errno = EAGAIN;
return GNUNET_SYSERR;
}
}
-#if DEBUG_PIPE
LOG (GNUNET_ERROR_TYPE_DEBUG, "Read %u bytes\n", bytesRead);
-#endif
}
return bytesRead;
#else
/* set to non-blocking, read, then set back */
flags = fcntl (h->fd, F_GETFL);
if (0 == (flags & O_NONBLOCK))
- fcntl (h->fd, F_SETFL, flags | O_NONBLOCK);
+ (void) fcntl (h->fd, F_SETFL, flags | O_NONBLOCK);
ret = read (h->fd, result, len);
if (0 == (flags & O_NONBLOCK))
- fcntl (h->fd, F_SETFL, flags);
+ {
+ int eno = errno;
+ (void) fcntl (h->fd, F_SETFL, flags);
+ errno = eno;
+ }
return ret;
#endif
}
#ifdef MINGW
DWORD bytesWritten;
- if (h->type != GNUNET_PIPE)
+ if (h->type != GNUNET_DISK_HANLDE_TYPE_PIPE)
{
if (!WriteFile (h->h, buffer, n, &bytesWritten, NULL))
{
}
else
{
-#if DEBUG_PIPE
LOG (GNUNET_ERROR_TYPE_DEBUG, "It is a pipe trying to write %u bytes\n", n);
-#endif
if (!WriteFile (h->h, buffer, n, &bytesWritten, h->oOverlapWrite))
{
if (GetLastError () != ERROR_IO_PENDING)
{
SetErrnoFromWinError (GetLastError ());
-#if DEBUG_PIPE
LOG (GNUNET_ERROR_TYPE_DEBUG, "Error writing to pipe: %u\n",
GetLastError ());
-#endif
return GNUNET_SYSERR;
}
-#if DEBUG_PIPE
LOG (GNUNET_ERROR_TYPE_DEBUG, "Will get overlapped result\n");
-#endif
if (!GetOverlappedResult (h->h, h->oOverlapWrite, &bytesWritten, TRUE))
{
SetErrnoFromWinError (GetLastError ());
-#if DEBUG_PIPE
LOG (GNUNET_ERROR_TYPE_DEBUG,
"Error getting overlapped result while writing to pipe: %u\n",
GetLastError ());
-#endif
return GNUNET_SYSERR;
}
}
DWORD ovr;
if (!GetOverlappedResult (h->h, h->oOverlapWrite, &ovr, TRUE))
{
-#if DEBUG_PIPE
LOG (GNUNET_ERROR_TYPE_DEBUG,
"Error getting control overlapped result while writing to pipe: %u\n",
GetLastError ());
-#endif
}
else
{
-#if DEBUG_PIPE
LOG (GNUNET_ERROR_TYPE_DEBUG,
"Wrote %u bytes (ovr says %u), picking the greatest\n",
bytesWritten, ovr);
-#endif
}
}
if (bytesWritten == 0)
{
if (n > 0)
{
-#if DEBUG_PIPE
LOG (GNUNET_ERROR_TYPE_DEBUG, "Wrote %u bytes, returning -1 with EAGAIN\n", bytesWritten);
-#endif
errno = EAGAIN;
return GNUNET_SYSERR;
}
}
-#if DEBUG_PIPE
LOG (GNUNET_ERROR_TYPE_DEBUG, "Wrote %u bytes\n", bytesWritten);
-#endif
}
return bytesWritten;
#else
#ifdef MINGW
DWORD bytesWritten;
/* We do a non-overlapped write, which is as blocking as it gets */
-#if DEBUG_PIPE
LOG (GNUNET_ERROR_TYPE_DEBUG, "Writing %u bytes\n", n);
-#endif
if (!WriteFile (h->h, buffer, n, &bytesWritten, NULL))
{
SetErrnoFromWinError (GetLastError ());
-#if DEBUG_PIPE
LOG (GNUNET_ERROR_TYPE_DEBUG, "Error writing to pipe: %u\n",
GetLastError ());
-#endif
return GNUNET_SYSERR;
}
if (bytesWritten == 0 && n > 0)
{
-#if DEBUG_PIPE
LOG (GNUNET_ERROR_TYPE_DEBUG, "Waiting for pipe to clean\n");
-#endif
WaitForSingleObject (h->h, INFINITE);
if (!WriteFile (h->h, buffer, n, &bytesWritten, NULL))
{
SetErrnoFromWinError (GetLastError ());
-#if DEBUG_PIPE
LOG (GNUNET_ERROR_TYPE_DEBUG, "Error writing to pipe: %u\n",
GetLastError ());
-#endif
return GNUNET_SYSERR;
}
}
-#if DEBUG_PIPE
LOG (GNUNET_ERROR_TYPE_DEBUG, "Wrote %u bytes\n", bytesWritten);
-#endif
return bytesWritten;
#else
int flags;
/* set to blocking, write, then set back */
flags = fcntl (h->fd, F_GETFL);
if (0 != (flags & O_NONBLOCK))
- fcntl (h->fd, F_SETFL, flags - O_NONBLOCK);
+ (void) fcntl (h->fd, F_SETFL, flags - O_NONBLOCK);
ret = write (h->fd, buffer, n);
if (0 == (flags & O_NONBLOCK))
- fcntl (h->fd, F_SETFL, flags);
+ (void) fcntl (h->fd, F_SETFL, flags);
return ret;
#endif
}
* @param dirName the name of the directory
* @param callback the method to call for each file
* @param callback_cls closure for callback
- * @return GNUNET_YES if directory is not empty and @callback
+ * @return GNUNET_YES if directory is not empty and 'callback'
* will be called later, GNUNET_NO otherwise, GNUNET_SYSERR on error.
*/
int
* caution.
*
*
- * @param fileName the file to remove
+ * @param filename the file to remove
* @return GNUNET_OK on success, GNUNET_SYSERR on error
*/
int
-GNUNET_DISK_directory_remove (const char *fileName)
+GNUNET_DISK_directory_remove (const char *filename)
{
struct stat istat;
- if (0 != LSTAT (fileName, &istat))
+ if (0 != LSTAT (filename, &istat))
return GNUNET_NO; /* file may not exist... */
- CHMOD (fileName, S_IWUSR | S_IRUSR | S_IXUSR);
- if (UNLINK (fileName) == 0)
+ (void) CHMOD (filename, S_IWUSR | S_IRUSR | S_IXUSR);
+ if (UNLINK (filename) == 0)
return GNUNET_OK;
if ((errno != EISDIR) &&
/* EISDIR is not sufficient in all cases, e.g.
* sticky /tmp directory may result in EPERM on BSD.
* So we also explicitly check "isDirectory" */
- (GNUNET_YES != GNUNET_DISK_directory_test (fileName)))
+ (GNUNET_YES != GNUNET_DISK_directory_test (filename)))
{
- LOG_STRERROR_FILE (GNUNET_ERROR_TYPE_WARNING, "rmdir", fileName);
+ LOG_STRERROR_FILE (GNUNET_ERROR_TYPE_WARNING, "rmdir", filename);
return GNUNET_SYSERR;
}
if (GNUNET_SYSERR ==
- GNUNET_DISK_directory_scan (fileName, &remove_helper, NULL))
+ GNUNET_DISK_directory_scan (filename, &remove_helper, NULL))
return GNUNET_SYSERR;
- if (0 != RMDIR (fileName))
+ if (0 != RMDIR (filename))
{
- LOG_STRERROR_FILE (GNUNET_ERROR_TYPE_WARNING, "rmdir", fileName);
+ LOG_STRERROR_FILE (GNUNET_ERROR_TYPE_WARNING, "rmdir", filename);
return GNUNET_SYSERR;
}
return GNUNET_OK;
struct GNUNET_DISK_FileHandle *in;
struct GNUNET_DISK_FileHandle *out;
- if (GNUNET_OK != GNUNET_DISK_file_size (src, &size, GNUNET_YES))
+ if (GNUNET_OK != GNUNET_DISK_file_size (src, &size, GNUNET_YES, GNUNET_YES))
return GNUNET_SYSERR;
pos = 0;
in = GNUNET_DISK_file_open (src, GNUNET_DISK_OPEN_READ,
h = INVALID_HANDLE_VALUE;
if (h == INVALID_HANDLE_VALUE)
{
+ int err;
SetErrnoFromWinError (GetLastError ());
- LOG_STRERROR_FILE (GNUNET_ERROR_TYPE_WARNING, "open", expfn);
+ err = errno;
+ LOG_STRERROR_FILE (GNUNET_ERROR_TYPE_INFO, "open", expfn);
GNUNET_free (expfn);
+ errno = err;
return NULL;
}
ret = GNUNET_malloc (sizeof (struct GNUNET_DISK_FileHandle));
#ifdef MINGW
ret->h = h;
- ret->type = GNUNET_DISK_FILE;
+ ret->type = GNUNET_DISK_HANLDE_TYPE_FILE;
#else
ret->fd = fd;
#endif
}
+/**
+ * Get a handle from a native FD.
+ *
+ * @param fd native file descriptor
+ * @return file handle corresponding to the descriptor
+ */
+struct GNUNET_DISK_FileHandle *
+GNUNET_DISK_get_handle_from_native (FILE *fd)
+{
+ struct GNUNET_DISK_FileHandle *fh;
+ int fno;
+#if MINGW
+ intptr_t osfh;
+#endif
+
+ fno = fileno (fd);
+ if (-1 == fno)
+ return NULL;
+
+#if MINGW
+ osfh = _get_osfhandle (fno);
+ if (INVALID_HANDLE_VALUE == (HANDLE) osfh)
+ return NULL;
+#endif
+
+ fh = GNUNET_malloc (sizeof (struct GNUNET_DISK_FileHandle));
+
+#if MINGW
+ fh->h = (HANDLE) osfh;
+ /* Assume it to be a pipe. TODO: use some kind of detection
+ * function to figure out handle type.
+ * Note that we can't make it overlapped if it isn't already.
+ * (ReOpenFile() is only available in 2003/Vista).
+ * The process that opened this file in the first place (usually a parent
+ * process, if this is stdin/stdout/stderr) must make it overlapped,
+ * otherwise we're screwed, as selecting on non-overlapped handle
+ * will block.
+ */
+ fh->type = GNUNET_DISK_HANLDE_TYPE_PIPE;
+ fh->oOverlapRead = GNUNET_malloc (sizeof (OVERLAPPED));
+ fh->oOverlapWrite = GNUNET_malloc (sizeof (OVERLAPPED));
+ fh->oOverlapRead->hEvent = CreateEvent (NULL, FALSE, FALSE, NULL);
+ fh->oOverlapWrite->hEvent = CreateEvent (NULL, FALSE, FALSE, NULL);
+#else
+ fh->fd = fno;
+#endif
+
+ return fh;
+}
+
+
/**
* Construct full path to a file inside of the private
* directory used by GNUnet. Also creates the corresponding
#endif
}
+
#if WINDOWS
/* Copyright Bob Byrnes <byrnes <at> curl.com>
http://permalink.gmane.org/gmane.os.cygwin.patches/2121
snprintf (pipename, sizeof pipename, "\\\\.\\pipe\\gnunet-%d-%ld",
getpid (), InterlockedIncrement ((LONG *) & pipe_unique_id));
-#if DEBUG_PIPE
LOG (GNUNET_ERROR_TYPE_DEBUG, "CreateNamedPipe: name = %s, size = %lu\n",
pipename, psize);
-#endif
/* Use CreateNamedPipe instead of CreatePipe, because the latter
* returns a write handle that does not permit FILE_READ_ATTRIBUTES
* access, on versions of win32 earlier than WinXP SP2.
if (read_pipe != INVALID_HANDLE_VALUE)
{
-#if DEBUG_PIPE
LOG (GNUNET_ERROR_TYPE_DEBUG, "pipe read handle = %p\n", read_pipe);
-#endif
break;
}
case ERROR_PIPE_BUSY:
/* The pipe is already open with compatible parameters.
* Pick a new name and retry. */
-#if DEBUG_PIPE
LOG (GNUNET_ERROR_TYPE_DEBUG, "pipe busy, retrying\n");
-#endif
continue;
case ERROR_ACCESS_DENIED:
/* The pipe is already open with incompatible parameters.
* Pick a new name and retry. */
-#if DEBUG_PIPE
LOG (GNUNET_ERROR_TYPE_DEBUG, "pipe access denied, retrying\n");
-#endif
continue;
case ERROR_CALL_NOT_IMPLEMENTED:
/* We are on an older Win9x platform without named pipes.
* Return an anonymous pipe as the best approximation. */
-#if DEBUG_PIPE
LOG (GNUNET_ERROR_TYPE_DEBUG,
"CreateNamedPipe not implemented, resorting to "
"CreatePipe: size = %lu\n", psize);
-#endif
if (CreatePipe (read_pipe_ptr, write_pipe_ptr, sa_ptr, psize))
{
-#if DEBUG_PIPE
- LOG (GNUNET_ERROR_TYPE_DEBUG, "pipe read handle = %p\n",
- *read_pipe_ptr);
- LOG (GNUNET_ERROR_TYPE_DEBUG, "pipe write handle = %p\n",
+ LOG (GNUNET_ERROR_TYPE_DEBUG, "pipe read handle = %p, write handle = %p\n",
+ *read_pipe_ptr,
*write_pipe_ptr);
-#endif
return GNUNET_OK;
}
err = GetLastError ();
}
/* NOTREACHED */
}
-#if DEBUG_PIPE
LOG (GNUNET_ERROR_TYPE_DEBUG, "CreateFile: name = %s\n", pipename);
-#endif
/* Open the named pipe for writing.
* Be sure to permit FILE_READ_ATTRIBUTES access. */
/* Failure. */
DWORD err = GetLastError ();
-#if DEBUG_PIPE
LOG (GNUNET_ERROR_TYPE_DEBUG, "CreateFile failed: %d\n", err);
-#endif
CloseHandle (read_pipe);
return err;
}
-#if DEBUG_PIPE
LOG (GNUNET_ERROR_TYPE_DEBUG, "pipe write handle = %p\n", write_pipe);
-#endif
/* Success. */
*read_pipe_ptr = read_pipe;
*write_pipe_ptr = write_pipe;
}
#endif
+
/**
* Creates an interprocess channel
*
- * @param blocking creates an asynchronous pipe if set to GNUNET_NO
+ * @param blocking_read creates an asynchronous pipe for reading if set to GNUNET_NO
+ * @param blocking_write creates an asynchronous pipe for writing if set to GNUNET_NO
* @param inherit_read inherit the parent processes stdin (only for windows)
* @param inherit_write inherit the parent processes stdout (only for windows)
- *
* @return handle to the new pipe, NULL on error
*/
struct GNUNET_DISK_PipeHandle *
GNUNET_DISK_pipe (int blocking_read, int blocking_write, int inherit_read, int inherit_write)
{
- struct GNUNET_DISK_PipeHandle *p;
- struct GNUNET_DISK_FileHandle *fds;
-
- p = GNUNET_malloc (sizeof (struct GNUNET_DISK_PipeHandle) +
- 2 * sizeof (struct GNUNET_DISK_FileHandle));
- fds = (struct GNUNET_DISK_FileHandle *) &p[1];
- p->fd[0] = &fds[0];
- p->fd[1] = &fds[1];
#ifndef MINGW
int fd[2];
int ret;
- int flags;
int eno;
ret = pipe (fd);
{
eno = errno;
LOG_STRERROR (GNUNET_ERROR_TYPE_ERROR, "pipe");
- GNUNET_free (p);
- errno = eno;
- return NULL;
- }
- p->fd[0]->fd = fd[0];
- p->fd[1]->fd = fd[1];
- ret = 0;
- flags = fcntl (fd[0], F_GETFL);
- if (!blocking_read)
- flags |= O_NONBLOCK;
- if (0 > fcntl (fd[0], F_SETFL, flags))
- ret = -1;
- flags = fcntl (fd[0], F_GETFD);
- flags |= FD_CLOEXEC;
- if (0 > fcntl (fd[0], F_SETFD, flags))
- ret = -1;
-
- flags = fcntl (fd[1], F_GETFL);
- if (!blocking_write)
- flags |= O_NONBLOCK;
- if (0 > fcntl (fd[1], F_SETFL, flags))
- ret = -1;
- flags = fcntl (fd[1], F_GETFD);
- flags |= FD_CLOEXEC;
- if (0 > fcntl (fd[1], F_SETFD, flags))
- ret = -1;
- if (ret == -1)
- {
- eno = errno;
- LOG_STRERROR (GNUNET_ERROR_TYPE_ERROR, "fcntl");
- GNUNET_break (0 == close (p->fd[0]->fd));
- GNUNET_break (0 == close (p->fd[1]->fd));
- GNUNET_free (p);
errno = eno;
return NULL;
}
+ return GNUNET_DISK_pipe_from_fd (blocking_read,
+ blocking_write,
+ fd);
#else
+ struct GNUNET_DISK_PipeHandle *p;
+ struct GNUNET_DISK_FileHandle *fds;
BOOL ret;
HANDLE tmp_handle;
+
+
+ p = GNUNET_malloc (sizeof (struct GNUNET_DISK_PipeHandle) +
+ 2 * sizeof (struct GNUNET_DISK_FileHandle));
+ fds = (struct GNUNET_DISK_FileHandle *) &p[1];
+ p->fd[0] = &fds[0];
+ p->fd[1] = &fds[1];
+ /* All pipes are overlapped. If you want them to block - just
+ * call WriteFile() and ReadFile() with NULL overlapped pointer.
+ */
ret =
create_selectable_pipe (&p->fd[0]->h, &p->fd[1]->h, NULL, 0,
- blocking_read ? 0 : FILE_FLAG_OVERLAPPED,
- blocking_write ? 0 : FILE_FLAG_OVERLAPPED);
+ FILE_FLAG_OVERLAPPED,
+ FILE_FLAG_OVERLAPPED);
if (!ret)
{
GNUNET_free (p);
CloseHandle (p->fd[1]->h);
p->fd[1]->h = tmp_handle;
- p->fd[0]->type = GNUNET_PIPE;
- p->fd[1]->type = GNUNET_PIPE;
+ p->fd[0]->type = GNUNET_DISK_HANLDE_TYPE_PIPE;
+ p->fd[1]->type = GNUNET_DISK_HANLDE_TYPE_PIPE;
p->fd[0]->oOverlapRead = GNUNET_malloc (sizeof (OVERLAPPED));
p->fd[0]->oOverlapWrite = GNUNET_malloc (sizeof (OVERLAPPED));
p->fd[1]->oOverlapRead->hEvent = CreateEvent (NULL, FALSE, FALSE, NULL);
p->fd[1]->oOverlapWrite->hEvent = CreateEvent (NULL, FALSE, FALSE, NULL);
-#endif
return p;
+#endif
}
+
/**
* Creates a pipe object from a couple of file descriptors.
* Useful for wrapping existing pipe FDs.
*
- * @param blocking creates an asynchronous pipe if set to GNUNET_NO
+ * @param blocking_read creates an asynchronous pipe for reading if set to GNUNET_NO
+ * @param blocking_write creates an asynchronous pipe for writing if set to GNUNET_NO
* @param fd an array of two fd values. One of them may be -1 for read-only or write-only pipes
*
* @return handle to the new pipe, NULL on error
#ifndef MINGW
int ret;
int flags;
- int eno;
+ int eno = 0; /* make gcc happy */
p->fd[0]->fd = fd[0];
p->fd[1]->fd = fd[1];
ret = 0;
if (fd[0] >= 0)
{
- flags = fcntl (fd[0], F_GETFL);
if (!blocking_read)
+ {
+ flags = fcntl (fd[0], F_GETFL);
flags |= O_NONBLOCK;
- if (0 > fcntl (fd[0], F_SETFL, flags))
- ret = -1;
+ if (0 > fcntl (fd[0], F_SETFL, flags))
+ {
+ ret = -1;
+ eno = errno;
+ }
+ }
flags = fcntl (fd[0], F_GETFD);
flags |= FD_CLOEXEC;
if (0 > fcntl (fd[0], F_SETFD, flags))
+ {
ret = -1;
+ eno = errno;
+ }
}
if (fd[1] >= 0)
{
- flags = fcntl (fd[1], F_GETFL);
if (!blocking_write)
+ {
+ flags = fcntl (fd[1], F_GETFL);
flags |= O_NONBLOCK;
- if (0 > fcntl (fd[1], F_SETFL, flags))
- ret = -1;
+ if (0 > fcntl (fd[1], F_SETFL, flags))
+ {
+ ret = -1;
+ eno = errno;
+ }
+ }
flags = fcntl (fd[1], F_GETFD);
flags |= FD_CLOEXEC;
if (0 > fcntl (fd[1], F_SETFD, flags))
+ {
ret = -1;
+ eno = errno;
+ }
}
if (ret == -1)
{
- eno = errno;
+ errno = eno;
LOG_STRERROR (GNUNET_ERROR_TYPE_ERROR, "fcntl");
if (p->fd[0]->fd >= 0)
GNUNET_break (0 == close (p->fd[0]->fd));
return NULL;
}
#else
- BOOL ret;
-
if (fd[0] >= 0)
- p->fd[0]->h = _get_osfhandle (fd[0]);
+ p->fd[0]->h = (HANDLE) _get_osfhandle (fd[0]);
else
p->fd[0]->h = INVALID_HANDLE_VALUE;
if (fd[1] >= 0)
- p->fd[1]->h = _get_osfhandle (fd[1]);
+ p->fd[1]->h = (HANDLE) _get_osfhandle (fd[1]);
else
p->fd[1]->h = INVALID_HANDLE_VALUE;
if (p->fd[0]->h != INVALID_HANDLE_VALUE)
{
- p->fd[0]->type = GNUNET_PIPE;
+ p->fd[0]->type = GNUNET_DISK_HANLDE_TYPE_PIPE;
p->fd[0]->oOverlapRead = GNUNET_malloc (sizeof (OVERLAPPED));
p->fd[0]->oOverlapWrite = GNUNET_malloc (sizeof (OVERLAPPED));
p->fd[0]->oOverlapRead->hEvent = CreateEvent (NULL, FALSE, FALSE, NULL);
if (p->fd[1]->h != INVALID_HANDLE_VALUE)
{
- p->fd[1]->type = GNUNET_PIPE;
+ p->fd[1]->type = GNUNET_DISK_HANLDE_TYPE_PIPE;
p->fd[1]->oOverlapRead = GNUNET_malloc (sizeof (OVERLAPPED));
p->fd[1]->oOverlapWrite = GNUNET_malloc (sizeof (OVERLAPPED));
p->fd[1]->oOverlapRead->hEvent = CreateEvent (NULL, FALSE, FALSE, NULL);
return ret;
}
+
/**
* Closes an interprocess channel
*
}
-/**
- * Creates a named pipe/FIFO and opens it
- * @param fn pointer to the name of the named pipe or to NULL
- * @param flags open flags
- * @param perm access permissions
- * @return pipe handle on success, NULL on error
- */
-struct GNUNET_DISK_FileHandle *
-GNUNET_DISK_npipe_create (char **fn, enum GNUNET_DISK_OpenFlags flags,
- enum GNUNET_DISK_AccessPermissions perm)
-{
-#ifdef MINGW
- struct GNUNET_DISK_FileHandle *ret;
- HANDLE h = NULL;
- DWORD openMode;
- char *name;
-
- openMode = 0;
- if (flags & GNUNET_DISK_OPEN_READWRITE)
- openMode = PIPE_ACCESS_DUPLEX;
- else if (flags & GNUNET_DISK_OPEN_READ)
- openMode = PIPE_ACCESS_INBOUND;
- else if (flags & GNUNET_DISK_OPEN_WRITE)
- openMode = PIPE_ACCESS_OUTBOUND;
-
- if (flags & GNUNET_DISK_OPEN_FAILIFEXISTS)
- openMode |= FILE_FLAG_FIRST_PIPE_INSTANCE;
-
- while (h == NULL)
- {
- DWORD error_code;
-
- name = NULL;
- if (*fn != NULL)
- {
- GNUNET_asprintf (&name, "\\\\.\\pipe\\%.246s", fn);
-#if DEBUG_NPIPE
- LOG (GNUNET_ERROR_TYPE_DEBUG,
- "Trying to create an instance of named pipe `%s'\n", name);
-#endif
- /* 1) This might work just fine with UTF-8 strings as it is.
- * 2) This is only used by GNUnet itself, and only with latin names.
- */
- h = CreateNamedPipe (name, openMode | FILE_FLAG_OVERLAPPED,
- PIPE_TYPE_BYTE | PIPE_READMODE_BYTE, 2, 1, 1, 0,
- NULL);
- }
- else
- {
- GNUNET_asprintf (fn, "\\\\.\\pipe\\gnunet-%llu",
- GNUNET_CRYPTO_random_u64 (GNUNET_CRYPTO_QUALITY_WEAK,
- UINT64_MAX));
-#if DEBUG_NPIPE
- LOG (GNUNET_ERROR_TYPE_DEBUG, "Trying to create unique named pipe `%s'\n",
- *fn);
-#endif
- h = CreateNamedPipe (*fn,
- openMode | FILE_FLAG_OVERLAPPED |
- FILE_FLAG_FIRST_PIPE_INSTANCE,
- PIPE_TYPE_BYTE | PIPE_READMODE_BYTE, 2, 1, 1, 0,
- NULL);
- }
- error_code = GetLastError ();
- if (name)
- GNUNET_free (name);
- /* don't re-set name to NULL yet */
- if (h == INVALID_HANDLE_VALUE)
- {
- SetErrnoFromWinError (error_code);
-#if DEBUG_NPIPE
- LOG (GNUNET_ERROR_TYPE_DEBUG,
- "Pipe creation have failed because of %d, errno is %d\n", error_code,
- errno);
-#endif
- if (name == NULL)
- {
-#if DEBUG_NPIPE
- LOG (GNUNET_ERROR_TYPE_DEBUG,
- "Pipe was to be unique, considering re-creation\n");
-#endif
- GNUNET_free (*fn);
- *fn = NULL;
- if (error_code != ERROR_ACCESS_DENIED && error_code != ERROR_PIPE_BUSY)
- {
- return NULL;
- }
-#if DEBUG_NPIPE
- LOG (GNUNET_ERROR_TYPE_DEBUG,
- "Pipe name was not unique, trying again\n");
-#endif
- h = NULL;
- }
- else
- return NULL;
- }
- }
- errno = 0;
-
- ret = GNUNET_malloc (sizeof (*ret));
- ret->h = h;
- ret->type = GNUNET_PIPE;
-
- ret->oOverlapRead = GNUNET_malloc (sizeof (OVERLAPPED));
- ret->oOverlapWrite = GNUNET_malloc (sizeof (OVERLAPPED));
-
- ret->oOverlapRead->hEvent = CreateEvent (NULL, FALSE, FALSE, NULL);
- ret->oOverlapWrite->hEvent = CreateEvent (NULL, FALSE, FALSE, NULL);
-
- return ret;
-#else
- if (*fn == NULL)
- {
- char dir[] = "/tmp/gnunet-pipe-XXXXXX";
-
- if (mkdtemp (dir) == NULL)
- {
- LOG_STRERROR (GNUNET_ERROR_TYPE_ERROR, "mkdtemp");
- return NULL;
- }
- GNUNET_asprintf (fn, "%s/child-control", dir);
- }
-
- if (mkfifo (*fn, translate_unix_perms (perm)) == -1)
- {
- if ((errno != EEXIST) || (0 != (flags & GNUNET_DISK_OPEN_FAILIFEXISTS)))
- return NULL;
- }
-
- flags = flags & (~GNUNET_DISK_OPEN_FAILIFEXISTS);
- return GNUNET_DISK_file_open (*fn, flags, perm);
-#endif
-}
-
-
-/**
- * Opens already existing named pipe/FIFO
- *
- * @param fn name of an existing named pipe
- * @param flags open flags
- * @param perm access permissions
- * @return pipe handle on success, NULL on error
- */
-struct GNUNET_DISK_FileHandle *
-GNUNET_DISK_npipe_open (const char *fn, enum GNUNET_DISK_OpenFlags flags,
- enum GNUNET_DISK_AccessPermissions perm)
-{
-#ifdef MINGW
- struct GNUNET_DISK_FileHandle *ret;
- HANDLE h;
- DWORD openMode;
-
- openMode = 0;
- if (flags & GNUNET_DISK_OPEN_READWRITE)
- openMode = GENERIC_WRITE | GENERIC_READ;
- else if (flags & GNUNET_DISK_OPEN_READ)
- openMode = GENERIC_READ;
- else if (flags & GNUNET_DISK_OPEN_WRITE)
- openMode = GENERIC_WRITE;
-
- h = CreateFile (fn, openMode, 0, NULL, OPEN_EXISTING,
- FILE_FLAG_OVERLAPPED | FILE_READ_ATTRIBUTES, NULL);
- if (h == INVALID_HANDLE_VALUE)
- {
- SetErrnoFromWinError (GetLastError ());
- return NULL;
- }
-
- ret = GNUNET_malloc (sizeof (*ret));
- ret->h = h;
- ret->type = GNUNET_PIPE;
- ret->oOverlapRead = GNUNET_malloc (sizeof (OVERLAPPED));
- ret->oOverlapWrite = GNUNET_malloc (sizeof (OVERLAPPED));
- ret->oOverlapRead->hEvent = CreateEvent (NULL, FALSE, FALSE, NULL);
- ret->oOverlapWrite->hEvent = CreateEvent (NULL, FALSE, FALSE, NULL);
-
- return ret;
-#else
- flags = flags & (~GNUNET_DISK_OPEN_FAILIFEXISTS);
- return GNUNET_DISK_file_open (fn, flags, perm);
-#endif
-}
-
-/**
- * Closes a named pipe/FIFO
- * @param pipe named pipe
- * @return GNUNET_OK on success, GNUNET_SYSERR otherwise
- */
-int
-GNUNET_DISK_npipe_close (struct GNUNET_DISK_FileHandle *pipe)
-{
-#ifndef MINGW
- return close (pipe->fd) == 0 ? GNUNET_OK : GNUNET_SYSERR;
-#else
- BOOL ret;
-
- ret = CloseHandle (pipe->h);
- if (!ret)
- {
- SetErrnoFromWinError (GetLastError ());
- return GNUNET_SYSERR;
- }
- else
- return GNUNET_OK;
-#endif
-}
-
-
/**
* Get the handle to a particular pipe end
*
projects / oweals / gnunet.git / blobdiff