*/
#include "config.h"
-
-#include "glib.h"
+#include "glibconfig.h"
#include <sys/stat.h>
#ifdef HAVE_UNISTD_H
#define O_BINARY 0
#endif
+#include "gfileutils.h"
+
#include "gstdio.h"
#include "glibintl.h"
-#include "galias.h"
-
-static gint create_temp_file (gchar *tmpl,
- int permissions);
+#ifdef HAVE_LINUX_MAGIC_H /* for btrfs check */
+#include <linux/magic.h>
+#include <sys/vfs.h>
+#endif
/**
* g_mkdir_with_parents:
return TRUE;
if (test & G_FILE_TEST_IS_REGULAR)
- return (attributes & (FILE_ATTRIBUTE_DIRECTORY | FILE_ATTRIBUTE_DEVICE)) == 0;
+ {
+ if ((attributes & (FILE_ATTRIBUTE_DIRECTORY | FILE_ATTRIBUTE_DEVICE)) == 0)
+ return TRUE;
+ }
if (test & G_FILE_TEST_IS_DIR)
- return (attributes & FILE_ATTRIBUTE_DIRECTORY) != 0;
+ {
+ if ((attributes & FILE_ATTRIBUTE_DIRECTORY) != 0)
+ return TRUE;
+ }
- if (test & G_FILE_TEST_IS_EXECUTABLE)
+ /* "while" so that we can exit this "loop" with a simple "break" */
+ while (test & G_FILE_TEST_IS_EXECUTABLE)
{
const gchar *lastdot = strrchr (filename, '.');
const gchar *pathext = NULL, *p;
int extlen;
if (lastdot == NULL)
- return FALSE;
+ break;
if (_stricmp (lastdot, ".exe") == 0 ||
_stricmp (lastdot, ".cmd") == 0 ||
pathext = g_getenv ("PATHEXT");
if (pathext == NULL)
- return FALSE;
+ break;
pathext = g_utf8_casefold (pathext, -1);
g_free ((gchar *) pathext);
g_free ((gchar *) lastdot);
- return FALSE;
+ break;
}
return FALSE;
#endif
}
-#ifdef G_OS_WIN32
-
-#undef g_file_test
-
-/* Binary compatibility version. Not for newly compiled code. */
-
-gboolean
-g_file_test (const gchar *filename,
- GFileTest test)
-{
- gchar *utf8_filename = g_locale_to_utf8 (filename, -1, NULL, NULL, NULL);
- gboolean retval;
-
- if (utf8_filename == NULL)
- return FALSE;
-
- retval = g_file_test_utf8 (utf8_filename, test);
-
- g_free (utf8_filename);
-
- return retval;
-}
-
-#endif
-
GQuark
g_file_error_quark (void)
{
}
static gboolean
-get_contents_stdio (const gchar *display_filename,
- FILE *f,
- gchar **contents,
- gsize *length,
- GError **error)
+get_contents_stdio (const gchar *display_filename,
+ FILE *f,
+ gchar **contents,
+ gsize *length,
+ GError **error)
{
gchar buf[4096];
gsize bytes;
}
memcpy (str + total_bytes, buf, bytes);
+
+ if (total_bytes + bytes < total_bytes)
+ {
+ g_set_error (error,
+ G_FILE_ERROR,
+ G_FILE_ERROR_FAILED,
+ _("File \"%s\" is too large"),
+ display_filename);
+
+ goto error;
+ }
+
total_bytes += bytes;
}
fclose (f);
if (total_allocated == 0)
- str = g_new (gchar, 1);
+ {
+ str = g_new (gchar, 1);
+ total_bytes = 0;
+ }
str[total_bytes] = '\0';
#ifndef G_OS_WIN32
static gboolean
-get_contents_regfile (const gchar *display_filename,
- struct stat *stat_buf,
- gint fd,
- gchar **contents,
- gsize *length,
- GError **error)
+get_contents_regfile (const gchar *display_filename,
+ struct stat *stat_buf,
+ gint fd,
+ gchar **contents,
+ gsize *length,
+ GError **error)
{
gchar *buf;
gsize bytes_read;
}
static gboolean
-get_contents_posix (const gchar *filename,
- gchar **contents,
- gsize *length,
- GError **error)
+get_contents_posix (const gchar *filename,
+ gchar **contents,
+ gsize *length,
+ GError **error)
{
struct stat stat_buf;
gint fd;
#else /* G_OS_WIN32 */
static gboolean
-get_contents_win32 (const gchar *filename,
- gchar **contents,
- gsize *length,
- GError **error)
+get_contents_win32 (const gchar *filename,
+ gchar **contents,
+ gsize *length,
+ GError **error)
{
FILE *f;
gboolean retval;
/**
* g_file_get_contents:
* @filename: name of a file to read contents from, in the GLib file name encoding
- * @contents: location to store an allocated string
+ * @contents: location to store an allocated string, use g_free() to free
+ * the returned string
* @length: location to store length in bytes of the contents, or %NULL
* @error: return location for a #GError, or %NULL
- *
+ *
* Reads an entire file into allocated memory, with good error
- * checking.
+ * checking.
*
- * If the call was successful, it returns %TRUE and sets @contents to the file
- * contents and @length to the length of the file contents in bytes. The string
- * stored in @contents will be nul-terminated, so for text files you can pass
- * %NULL for the @length argument. If the call was not successful, it returns
- * %FALSE and sets @error. The error domain is #G_FILE_ERROR. Possible error
- * codes are those in the #GFileError enumeration. In the error case,
+ * If the call was successful, it returns %TRUE and sets @contents to the file
+ * contents and @length to the length of the file contents in bytes. The string
+ * stored in @contents will be nul-terminated, so for text files you can pass
+ * %NULL for the @length argument. If the call was not successful, it returns
+ * %FALSE and sets @error. The error domain is #G_FILE_ERROR. Possible error
+ * codes are those in the #GFileError enumeration. In the error case,
* @contents is set to %NULL and @length is set to zero.
*
* Return value: %TRUE on success, %FALSE if an error occurred
**/
gboolean
-g_file_get_contents (const gchar *filename,
- gchar **contents,
- gsize *length,
- GError **error)
+g_file_get_contents (const gchar *filename,
+ gchar **contents,
+ gsize *length,
+ GError **error)
{
g_return_val_if_fail (filename != NULL, FALSE);
g_return_val_if_fail (contents != NULL, FALSE);
#endif
}
-#ifdef G_OS_WIN32
-
-#undef g_file_get_contents
-
-/* Binary compatibility version. Not for newly compiled code. */
-
-gboolean
-g_file_get_contents (const gchar *filename,
- gchar **contents,
- gsize *length,
- GError **error)
-{
- gchar *utf8_filename = g_locale_to_utf8 (filename, -1, NULL, NULL, error);
- gboolean retval;
-
- if (utf8_filename == NULL)
- return FALSE;
-
- retval = g_file_get_contents_utf8 (utf8_filename, contents, length, error);
-
- g_free (utf8_filename);
-
- return retval;
-}
-
-#endif
-
static gboolean
-rename_file (const char *old_name,
- const char *new_name,
- GError **err)
+rename_file (const char *old_name,
+ const char *new_name,
+ GError **err)
{
errno = 0;
if (g_rename (old_name, new_name) == -1)
}
static gchar *
-write_to_temp_file (const gchar *contents,
- gssize length,
- const gchar *template,
- GError **err)
+write_to_temp_file (const gchar *contents,
+ gssize length,
+ const gchar *dest_file,
+ GError **err)
{
gchar *tmp_name;
gchar *display_name;
retval = NULL;
- tmp_name = g_strdup_printf ("%s.XXXXXX", template);
+ tmp_name = g_strdup_printf ("%s.XXXXXX", dest_file);
errno = 0;
- fd = create_temp_file (tmp_name, 0666);
+ fd = g_mkstemp_full (tmp_name, O_RDWR | O_BINARY, 0666);
save_errno = errno;
display_name = g_filename_display_name (tmp_name);
goto out;
}
}
-
+
+ errno = 0;
+ if (fflush (file) != 0)
+ {
+ save_errno = errno;
+
+ g_set_error (err,
+ G_FILE_ERROR,
+ g_file_error_from_errno (save_errno),
+ _("Failed to write file '%s': fflush() failed: %s"),
+ display_name,
+ g_strerror (save_errno));
+
+ g_unlink (tmp_name);
+
+ goto out;
+ }
+
+#ifdef BTRFS_SUPER_MAGIC
+ {
+ struct statfs buf;
+
+ /* On Linux, on btrfs, skip the fsync since rename-over-existing is
+ * guaranteed to be atomic and this is the only case in which we
+ * would fsync() anyway.
+ */
+
+ if (fstatfs (fd, &buf) == 0 && buf.f_type == BTRFS_SUPER_MAGIC)
+ goto no_fsync;
+ }
+#endif
+
+#ifdef HAVE_FSYNC
+ {
+ struct stat statbuf;
+
+ errno = 0;
+ /* If the final destination exists and is > 0 bytes, we want to sync the
+ * newly written file to ensure the data is on disk when we rename over
+ * the destination. Otherwise if we get a system crash we can lose both
+ * the new and the old file on some filesystems. (I.E. those that don't
+ * guarantee the data is written to the disk before the metadata.)
+ */
+ if (g_lstat (dest_file, &statbuf) == 0 &&
+ statbuf.st_size > 0 &&
+ fsync (fileno (file)) != 0)
+ {
+ save_errno = errno;
+
+ g_set_error (err,
+ G_FILE_ERROR,
+ g_file_error_from_errno (save_errno),
+ _("Failed to write file '%s': fsync() failed: %s"),
+ display_name,
+ g_strerror (save_errno));
+
+ g_unlink (tmp_name);
+
+ goto out;
+ }
+ }
+#endif
+ no_fsync:
+
errno = 0;
if (fclose (file) == EOF)
{
- save_errno = 0;
+ save_errno = errno;
g_set_error (err,
G_FILE_ERROR,
* it returns %FALSE and sets @error. The error domain is #G_FILE_ERROR.
* Possible error codes are those in the #GFileError enumeration.
*
+ * Note that the name for the temporary file is constructed by appending up
+ * to 7 characters to @filename.
+ *
* Return value: %TRUE on success, %FALSE if an error occurred
*
* Since: 2.8
**/
gboolean
-g_file_set_contents (const gchar *filename,
- const gchar *contents,
- gssize length,
- GError **error)
+g_file_set_contents (const gchar *filename,
+ const gchar *contents,
+ gssize length,
+ GError **error)
{
gchar *tmp_filename;
gboolean retval;
return retval;
}
+/**
+ * g_mkstemp_full:
+ * @tmpl: template filename
+ * @flags: flags to pass to an open() call in addition to O_EXCL and
+ * O_CREAT, which are passed automatically
+ * @mode: permissios to create the temporary file with
+ *
+ * Opens a temporary file. See the mkstemp() documentation
+ * on most UNIX-like systems.
+ *
+ * The parameter is a string that should follow the rules for
+ * mkstemp() templates, i.e. contain the string "XXXXXX".
+ * g_mkstemp_full() is slightly more flexible than mkstemp()
+ * in that the sequence does not have to occur at the very end of the
+ * template and you can pass a @mode and additional @flags. The X
+ * string will be modified to form the name of a file that didn't exist.
+ * The string should be in the GLib file name encoding. Most importantly,
+ * on Windows it should be in UTF-8.
+ *
+ * Return value: A file handle (as from open()) to the file
+ * opened for reading and writing. The file handle should be
+ * closed with close(). In case of errors, -1 is returned.
+ *
+ * Since: 2.22
+ */
/*
- * create_temp_file based on the mkstemp implementation from the GNU C library.
+ * g_mkstemp_full based on the mkstemp implementation from the GNU C library.
* Copyright (C) 1991,92,93,94,95,96,97,98,99 Free Software Foundation, Inc.
*/
-static gint
-create_temp_file (gchar *tmpl,
- int permissions)
+gint
+g_mkstemp_full (gchar *tmpl,
+ int flags,
+ int mode)
{
char *XXXXXX;
int count, fd;
GTimeVal tv;
static int counter = 0;
+ g_return_val_if_fail (tmpl != NULL, -1);
+
+
/* find the last occurrence of "XXXXXX" */
XXXXXX = g_strrstr (tmpl, "XXXXXX");
XXXXXX[5] = letters[v % NLETTERS];
/* tmpl is in UTF-8 on Windows, thus use g_open() */
- fd = g_open (tmpl, O_RDWR | O_CREAT | O_EXCL | O_BINARY, permissions);
+ fd = g_open (tmpl, flags | O_CREAT | O_EXCL, mode);
if (fd >= 0)
return fd;
gint
g_mkstemp (gchar *tmpl)
{
- return create_temp_file (tmpl, 0600);
+ return g_mkstemp_full (tmpl, O_RDWR | O_BINARY, 0600);
}
-#ifdef G_OS_WIN32
-
-#undef g_mkstemp
-
-/* Binary compatibility version. Not for newly compiled code. */
-
-gint
-g_mkstemp (gchar *tmpl)
-{
- char *XXXXXX;
- int count, fd;
- static const char letters[] =
- "ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
- static const int NLETTERS = sizeof (letters) - 1;
- glong value;
- GTimeVal tv;
- static int counter = 0;
-
- /* find the last occurrence of 'XXXXXX' */
- XXXXXX = g_strrstr (tmpl, "XXXXXX");
-
- if (!XXXXXX || strcmp (XXXXXX, "XXXXXX"))
- {
- errno = EINVAL;
- return -1;
- }
-
- /* Get some more or less random data. */
- g_get_current_time (&tv);
- value = (tv.tv_usec ^ tv.tv_sec) + counter++;
-
- for (count = 0; count < 100; value += 7777, ++count)
- {
- glong v = value;
-
- /* Fill in the random bits. */
- XXXXXX[0] = letters[v % NLETTERS];
- v /= NLETTERS;
- XXXXXX[1] = letters[v % NLETTERS];
- v /= NLETTERS;
- XXXXXX[2] = letters[v % NLETTERS];
- v /= NLETTERS;
- XXXXXX[3] = letters[v % NLETTERS];
- v /= NLETTERS;
- XXXXXX[4] = letters[v % NLETTERS];
- v /= NLETTERS;
- XXXXXX[5] = letters[v % NLETTERS];
-
- /* This is the backward compatibility system codepage version,
- * thus use normal open().
- */
- fd = open (tmpl, O_RDWR | O_CREAT | O_EXCL | O_BINARY, 0600);
-
- if (fd >= 0)
- return fd;
- else if (errno != EEXIST)
- /* Any other error will apply also to other names we might
- * try, and there are 2^32 or so of them, so give up now.
- */
- return -1;
- }
-
- /* We got out of the loop because we ran out of combinations to try. */
- errno = EEXIST;
- return -1;
-}
-
-#endif
-
/**
* g_file_open_tmp:
* @tmpl: Template for file name, as in g_mkstemp(), basename only,
* and @error will be set.
**/
gint
-g_file_open_tmp (const gchar *tmpl,
- gchar **name_used,
- GError **error)
+g_file_open_tmp (const gchar *tmpl,
+ gchar **name_used,
+ GError **error)
{
int retval;
const char *tmpdir;
- char *sep;
+ const char *sep;
char *fulltemplate;
const char *slash;
return retval;
}
-#ifdef G_OS_WIN32
-
-#undef g_file_open_tmp
-
-/* Binary compatibility version. Not for newly compiled code. */
-
-gint
-g_file_open_tmp (const gchar *tmpl,
- gchar **name_used,
- GError **error)
-{
- gchar *utf8_tmpl = g_locale_to_utf8 (tmpl, -1, NULL, NULL, error);
- gchar *utf8_name_used;
- gint retval;
-
- if (utf8_tmpl == NULL)
- return -1;
-
- retval = g_file_open_tmp_utf8 (utf8_tmpl, &utf8_name_used, error);
-
- if (retval == -1)
- return -1;
-
- if (name_used)
- *name_used = g_locale_from_utf8 (utf8_name_used, -1, NULL, NULL, NULL);
-
- g_free (utf8_name_used);
-
- return retval;
-}
-
-#endif
-
static gchar *
g_build_path_va (const gchar *separator,
const gchar *first_element,
if (separator_len)
{
- while (start &&
- strncmp (start, separator, separator_len) == 0)
+ while (strncmp (start, separator, separator_len) == 0)
start += separator_len;
}
return str;
}
-#define KILOBYTE_FACTOR 1024.0
-#define MEGABYTE_FACTOR (1024.0 * 1024.0)
-#define GIGABYTE_FACTOR (1024.0 * 1024.0 * 1024.0)
+#define KILOBYTE_FACTOR (G_GOFFSET_CONSTANT (1024))
+#define MEGABYTE_FACTOR (KILOBYTE_FACTOR * KILOBYTE_FACTOR)
+#define GIGABYTE_FACTOR (MEGABYTE_FACTOR * KILOBYTE_FACTOR)
+#define TERABYTE_FACTOR (GIGABYTE_FACTOR * KILOBYTE_FACTOR)
+#define PETABYTE_FACTOR (TERABYTE_FACTOR * KILOBYTE_FACTOR)
+#define EXABYTE_FACTOR (PETABYTE_FACTOR * KILOBYTE_FACTOR)
/**
* g_format_size_for_display:
* @size: a size in bytes.
*
* Formats a size (for example the size of a file) into a human readable string.
- * Sizes are rounded to the nearest size prefix (KB, MB, GB) and are displayed rounded to
- * the nearest tenth. E.g. the file size 3292528 bytes will be converted into
- * the string "3.1 MB".
+ * Sizes are rounded to the nearest size prefix (KB, MB, GB) and are displayed
+ * rounded to the nearest tenth. E.g. the file size 3292528 bytes will be
+ * converted into the string "3.1 MB".
*
* The prefix units base is 1024 (i.e. 1 KB is 1024 bytes).
- *
- * Returns: a formatted string containing a human readable file size.
+ *
+ * This string should be freed with g_free() when not needed any longer.
+ *
+ * Returns: a newly-allocated formatted string containing a human readable
+ * file size.
*
* Since: 2.16
**/
if (size < (goffset) MEGABYTE_FACTOR)
{
- displayed_size = (gdouble) size / KILOBYTE_FACTOR;
+ displayed_size = (gdouble) size / (gdouble) KILOBYTE_FACTOR;
return g_strdup_printf (_("%.1f KB"), displayed_size);
}
else if (size < (goffset) GIGABYTE_FACTOR)
{
- displayed_size = (gdouble) size / MEGABYTE_FACTOR;
+ displayed_size = (gdouble) size / (gdouble) MEGABYTE_FACTOR;
return g_strdup_printf (_("%.1f MB"), displayed_size);
}
- else
+ else if (size < (goffset) TERABYTE_FACTOR)
{
- displayed_size = (gdouble) size / GIGABYTE_FACTOR;
+ displayed_size = (gdouble) size / (gdouble) GIGABYTE_FACTOR;
return g_strdup_printf (_("%.1f GB"), displayed_size);
}
+ else if (size < (goffset) PETABYTE_FACTOR)
+ {
+ displayed_size = (gdouble) size / (gdouble) TERABYTE_FACTOR;
+ return g_strdup_printf (_("%.1f TB"), displayed_size);
+ }
+ else if (size < (goffset) EXABYTE_FACTOR)
+ {
+ displayed_size = (gdouble) size / (gdouble) PETABYTE_FACTOR;
+ return g_strdup_printf (_("%.1f PB"), displayed_size);
+ }
+ else
+ {
+ displayed_size = (gdouble) size / (gdouble) EXABYTE_FACTOR;
+ return g_strdup_printf (_("%.1f EB"), displayed_size);
+ }
}
}
* readlink() function. The returned string is in the encoding used
* for filenames. Use g_filename_to_utf8() to convert it to UTF-8.
*
- * Returns: A newly allocated string with the contents of the symbolic link,
+ * Returns: A newly-allocated string with the contents of the symbolic link,
* or %NULL if an error occurred.
*
* Since: 2.4
*/
gchar *
-g_file_read_link (const gchar *filename,
- GError **error)
+g_file_read_link (const gchar *filename,
+ GError **error)
{
#ifdef HAVE_READLINK
gchar *buffer;
#endif
}
-#define __G_FILEUTILS_C__
-#include "galiasdef.c"
+/* NOTE : Keep this part last to ensure nothing in this file uses the
+ * below binary compatibility versions.
+ */
+#if defined (G_OS_WIN32) && !defined (_WIN64)
+
+/* Binary compatibility versions. Will be called by code compiled
+ * against quite old (pre-2.8, I think) headers only, not from more
+ * recently compiled code.
+ */
+
+#undef g_file_test
+
+gboolean
+g_file_test (const gchar *filename,
+ GFileTest test)
+{
+ gchar *utf8_filename = g_locale_to_utf8 (filename, -1, NULL, NULL, NULL);
+ gboolean retval;
+
+ if (utf8_filename == NULL)
+ return FALSE;
+
+ retval = g_file_test_utf8 (utf8_filename, test);
+
+ g_free (utf8_filename);
+
+ return retval;
+}
+
+#undef g_file_get_contents
+
+gboolean
+g_file_get_contents (const gchar *filename,
+ gchar **contents,
+ gsize *length,
+ GError **error)
+{
+ gchar *utf8_filename = g_locale_to_utf8 (filename, -1, NULL, NULL, error);
+ gboolean retval;
+
+ if (utf8_filename == NULL)
+ return FALSE;
+
+ retval = g_file_get_contents_utf8 (utf8_filename, contents, length, error);
+
+ g_free (utf8_filename);
+
+ return retval;
+}
+
+#undef g_mkstemp
+
+gint
+g_mkstemp (gchar *tmpl)
+{
+ char *XXXXXX;
+ int count, fd;
+ static const char letters[] =
+ "ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
+ static const int NLETTERS = sizeof (letters) - 1;
+ glong value;
+ GTimeVal tv;
+ static int counter = 0;
+
+ /* find the last occurrence of 'XXXXXX' */
+ XXXXXX = g_strrstr (tmpl, "XXXXXX");
+
+ if (!XXXXXX)
+ {
+ errno = EINVAL;
+ return -1;
+ }
+
+ /* Get some more or less random data. */
+ g_get_current_time (&tv);
+ value = (tv.tv_usec ^ tv.tv_sec) + counter++;
+
+ for (count = 0; count < 100; value += 7777, ++count)
+ {
+ glong v = value;
+
+ /* Fill in the random bits. */
+ XXXXXX[0] = letters[v % NLETTERS];
+ v /= NLETTERS;
+ XXXXXX[1] = letters[v % NLETTERS];
+ v /= NLETTERS;
+ XXXXXX[2] = letters[v % NLETTERS];
+ v /= NLETTERS;
+ XXXXXX[3] = letters[v % NLETTERS];
+ v /= NLETTERS;
+ XXXXXX[4] = letters[v % NLETTERS];
+ v /= NLETTERS;
+ XXXXXX[5] = letters[v % NLETTERS];
+
+ /* This is the backward compatibility system codepage version,
+ * thus use normal open().
+ */
+ fd = open (tmpl, O_RDWR | O_CREAT | O_EXCL | O_BINARY, 0600);
+
+ if (fd >= 0)
+ return fd;
+ else if (errno != EEXIST)
+ /* Any other error will apply also to other names we might
+ * try, and there are 2^32 or so of them, so give up now.
+ */
+ return -1;
+ }
+
+ /* We got out of the loop because we ran out of combinations to try. */
+ errno = EEXIST;
+ return -1;
+}
+
+#undef g_file_open_tmp
+
+gint
+g_file_open_tmp (const gchar *tmpl,
+ gchar **name_used,
+ GError **error)
+{
+ gchar *utf8_tmpl = g_locale_to_utf8 (tmpl, -1, NULL, NULL, error);
+ gchar *utf8_name_used;
+ gint retval;
+
+ if (utf8_tmpl == NULL)
+ return -1;
+
+ retval = g_file_open_tmp_utf8 (utf8_tmpl, &utf8_name_used, error);
+
+ if (retval == -1)
+ return -1;
+
+ if (name_used)
+ *name_used = g_locale_from_utf8 (utf8_name_used, -1, NULL, NULL, NULL);
+
+ g_free (utf8_name_used);
+
+ return retval;
+}
+
+#endif
projects / platform / upstream / glib.git / blobdiff