diff options
Diffstat (limited to 'src/3rd_party/dbus-1.7.8/dbus/dbus-file-unix.c')
| -rw-r--r-- | src/3rd_party/dbus-1.7.8/dbus/dbus-file-unix.c | 417 |
1 files changed, 0 insertions, 417 deletions
diff --git a/src/3rd_party/dbus-1.7.8/dbus/dbus-file-unix.c b/src/3rd_party/dbus-1.7.8/dbus/dbus-file-unix.c deleted file mode 100644 index 197593362b..0000000000 --- a/src/3rd_party/dbus-1.7.8/dbus/dbus-file-unix.c +++ /dev/null @@ -1,417 +0,0 @@ -/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */ -/* dbus-file-unix.c unix related file implementation (internal to D-Bus implementation) - * - * Copyright (C) 2002, 2003, 2006 Red Hat, Inc. - * Copyright (C) 2003 CodeFactory AB - * - * Licensed under the Academic Free License version 2.1 - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA - * - */ - -#include <config.h> - -#include "dbus-protocol.h" -#include "dbus-errors.h" -#include "dbus-file.h" -#include "dbus-internals.h" -#include "dbus-sysdeps.h" -#include "dbus-sysdeps-unix.h" - -#include <sys/stat.h> -#include <stdio.h> -#include <fcntl.h> -#include <unistd.h> -#include <errno.h> - -#ifndef O_BINARY -#define O_BINARY 0 -#endif - -/** - * Appends the contents of the given file to the string, - * returning error code. At the moment, won't open a file - * more than a megabyte in size. - * - * @param str the string to append to - * @param filename filename to load - * @param error place to set an error - * @returns #FALSE if error was set - */ -dbus_bool_t -_dbus_file_get_contents (DBusString *str, - const DBusString *filename, - DBusError *error) -{ - int fd; - struct stat sb; - int orig_len; - int total; - const char *filename_c; - - _DBUS_ASSERT_ERROR_IS_CLEAR (error); - - filename_c = _dbus_string_get_const_data (filename); - - /* O_BINARY useful on Cygwin */ - fd = open (filename_c, O_RDONLY | O_BINARY); - if (fd < 0) - { - dbus_set_error (error, _dbus_error_from_errno (errno), - "Failed to open \"%s\": %s", - filename_c, - _dbus_strerror (errno)); - return FALSE; - } - - _dbus_verbose ("file fd %d opened\n", fd); - - if (fstat (fd, &sb) < 0) - { - dbus_set_error (error, _dbus_error_from_errno (errno), - "Failed to stat \"%s\": %s", - filename_c, - _dbus_strerror (errno)); - - _dbus_verbose ("fstat() failed: %s", - _dbus_strerror (errno)); - - _dbus_close (fd, NULL); - - return FALSE; - } - - if (sb.st_size > _DBUS_ONE_MEGABYTE) - { - dbus_set_error (error, DBUS_ERROR_FAILED, - "File size %lu of \"%s\" is too large.", - (unsigned long) sb.st_size, filename_c); - _dbus_close (fd, NULL); - return FALSE; - } - - total = 0; - orig_len = _dbus_string_get_length (str); - if (sb.st_size > 0 && S_ISREG (sb.st_mode)) - { - int bytes_read; - - while (total < (int) sb.st_size) - { - bytes_read = _dbus_read (fd, str, - sb.st_size - total); - if (bytes_read <= 0) - { - dbus_set_error (error, _dbus_error_from_errno (errno), - "Error reading \"%s\": %s", - filename_c, - _dbus_strerror (errno)); - - _dbus_verbose ("read() failed: %s", - _dbus_strerror (errno)); - - _dbus_close (fd, NULL); - _dbus_string_set_length (str, orig_len); - return FALSE; - } - else - total += bytes_read; - } - - _dbus_close (fd, NULL); - return TRUE; - } - else if (sb.st_size != 0) - { - _dbus_verbose ("Can only open regular files at the moment.\n"); - dbus_set_error (error, DBUS_ERROR_FAILED, - "\"%s\" is not a regular file", - filename_c); - _dbus_close (fd, NULL); - return FALSE; - } - else - { - _dbus_close (fd, NULL); - return TRUE; - } -} - -/** - * Writes a string out to a file. If the file exists, - * it will be atomically overwritten by the new data. - * - * @param str the string to write out - * @param filename the file to save string to - * @param world_readable If set, ensure the file is world readable - * @param error error to be filled in on failure - * @returns #FALSE on failure - */ -dbus_bool_t -_dbus_string_save_to_file (const DBusString *str, - const DBusString *filename, - dbus_bool_t world_readable, - DBusError *error) -{ - int fd; - int bytes_to_write; - const char *filename_c; - DBusString tmp_filename; - const char *tmp_filename_c; - int total; - dbus_bool_t need_unlink; - dbus_bool_t retval; - - _DBUS_ASSERT_ERROR_IS_CLEAR (error); - - fd = -1; - retval = FALSE; - need_unlink = FALSE; - - if (!_dbus_string_init (&tmp_filename)) - { - dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL); - return FALSE; - } - - if (!_dbus_string_copy (filename, 0, &tmp_filename, 0)) - { - dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL); - _dbus_string_free (&tmp_filename); - return FALSE; - } - - if (!_dbus_string_append (&tmp_filename, ".")) - { - dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL); - _dbus_string_free (&tmp_filename); - return FALSE; - } - -#define N_TMP_FILENAME_RANDOM_BYTES 8 - if (!_dbus_generate_random_ascii (&tmp_filename, N_TMP_FILENAME_RANDOM_BYTES)) - { - dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL); - _dbus_string_free (&tmp_filename); - return FALSE; - } - - filename_c = _dbus_string_get_const_data (filename); - tmp_filename_c = _dbus_string_get_const_data (&tmp_filename); - - fd = open (tmp_filename_c, O_WRONLY | O_BINARY | O_EXCL | O_CREAT, - world_readable ? 0644 : 0600); - if (fd < 0) - { - dbus_set_error (error, _dbus_error_from_errno (errno), - "Could not create %s: %s", tmp_filename_c, - _dbus_strerror (errno)); - goto out; - } - if (world_readable) - { - /* Ensure the file is world readable even in the presence of - * possibly restrictive umasks; - * see http://lists.freedesktop.org/archives/dbus/2010-September/013367.html - */ - if (fchmod (fd, 0644) < 0) - { - dbus_set_error (error, _dbus_error_from_errno (errno), - "Could not chmod %s: %s", tmp_filename_c, - _dbus_strerror (errno)); - goto out; - } - } - - _dbus_verbose ("tmp file fd %d opened\n", fd); - - need_unlink = TRUE; - - total = 0; - bytes_to_write = _dbus_string_get_length (str); - - while (total < bytes_to_write) - { - int bytes_written; - - bytes_written = _dbus_write (fd, str, total, - bytes_to_write - total); - - if (bytes_written <= 0) - { - dbus_set_error (error, _dbus_error_from_errno (errno), - "Could not write to %s: %s", tmp_filename_c, - _dbus_strerror (errno)); - - goto out; - } - - total += bytes_written; - } - - if (fsync(fd)) - { - dbus_set_error (error, _dbus_error_from_errno (errno), - "Could not synchronize file %s: %s", - tmp_filename_c, _dbus_strerror (errno)); - - goto out; - } - - if (!_dbus_close (fd, NULL)) - { - dbus_set_error (error, _dbus_error_from_errno (errno), - "Could not close file %s: %s", - tmp_filename_c, _dbus_strerror (errno)); - - goto out; - } - - fd = -1; - - if (rename (tmp_filename_c, filename_c) < 0) - { - dbus_set_error (error, _dbus_error_from_errno (errno), - "Could not rename %s to %s: %s", - tmp_filename_c, filename_c, - _dbus_strerror (errno)); - - goto out; - } - - need_unlink = FALSE; - - retval = TRUE; - - out: - /* close first, then unlink, to prevent ".nfs34234235" garbage - * files - */ - - if (fd >= 0) - _dbus_close (fd, NULL); - - if (need_unlink && unlink (tmp_filename_c) < 0) - _dbus_verbose ("Failed to unlink temp file %s: %s\n", - tmp_filename_c, _dbus_strerror (errno)); - - _dbus_string_free (&tmp_filename); - - if (!retval) - _DBUS_ASSERT_ERROR_IS_SET (error); - - return retval; -} - -/** Makes the file readable by every user in the system. - * - * @param filename the filename - * @param error error location - * @returns #TRUE if the file's permissions could be changed. - */ -dbus_bool_t -_dbus_make_file_world_readable(const DBusString *filename, - DBusError *error) -{ - const char *filename_c; - - _DBUS_ASSERT_ERROR_IS_CLEAR (error); - - filename_c = _dbus_string_get_const_data (filename); - if (chmod (filename_c, 0644) == -1) - { - dbus_set_error (error, - DBUS_ERROR_FAILED, - "Could not change permissions of file %s: %s\n", - filename_c, - _dbus_strerror (errno)); - return FALSE; - } - return TRUE; -} - -/** Creates the given file, failing if the file already exists. - * - * @param filename the filename - * @param error error location - * @returns #TRUE if we created the file and it didn't exist - */ -dbus_bool_t -_dbus_create_file_exclusively (const DBusString *filename, - DBusError *error) -{ - int fd; - const char *filename_c; - - _DBUS_ASSERT_ERROR_IS_CLEAR (error); - - filename_c = _dbus_string_get_const_data (filename); - - fd = open (filename_c, O_WRONLY | O_BINARY | O_EXCL | O_CREAT, - 0600); - if (fd < 0) - { - dbus_set_error (error, - DBUS_ERROR_FAILED, - "Could not create file %s: %s\n", - filename_c, - _dbus_strerror (errno)); - return FALSE; - } - - _dbus_verbose ("exclusive file fd %d opened\n", fd); - - if (!_dbus_close (fd, NULL)) - { - dbus_set_error (error, - DBUS_ERROR_FAILED, - "Could not close file %s: %s\n", - filename_c, - _dbus_strerror (errno)); - return FALSE; - } - - return TRUE; -} - -/** - * Deletes the given file. - * - * @param filename the filename - * @param error error location - * - * @returns #TRUE if unlink() succeeded - */ -dbus_bool_t -_dbus_delete_file (const DBusString *filename, - DBusError *error) -{ - const char *filename_c; - - _DBUS_ASSERT_ERROR_IS_CLEAR (error); - - filename_c = _dbus_string_get_const_data (filename); - - if (unlink (filename_c) < 0) - { - dbus_set_error (error, DBUS_ERROR_FAILED, - "Failed to delete file %s: %s\n", - filename_c, _dbus_strerror (errno)); - return FALSE; - } - else - return TRUE; -} |