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-rw-r--r--xorg-server/hw/xfree86/parser/write.c227
1 files changed, 227 insertions, 0 deletions
diff --git a/xorg-server/hw/xfree86/parser/write.c b/xorg-server/hw/xfree86/parser/write.c
new file mode 100644
index 000000000..6589fdc72
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+++ b/xorg-server/hw/xfree86/parser/write.c
@@ -0,0 +1,227 @@
+/*
+ * Copyright (c) 1997 Metro Link Incorporated
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
+ * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ * Except as contained in this notice, the name of the Metro Link shall not be
+ * used in advertising or otherwise to promote the sale, use or other dealings
+ * in this Software without prior written authorization from Metro Link.
+ *
+ */
+/*
+ * Copyright (c) 1997-2003 by The XFree86 Project, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Except as contained in this notice, the name of the copyright holder(s)
+ * and author(s) shall not be used in advertising or otherwise to promote
+ * the sale, use or other dealings in this Software without prior written
+ * authorization from the copyright holder(s) and author(s).
+ */
+
+
+/* View/edit this file with tab stops set to 4 */
+
+#ifdef HAVE_XORG_CONFIG_H
+#include <xorg-config.h>
+#endif
+
+#include "xf86Parser.h"
+#include "xf86tokens.h"
+#include "Configint.h"
+
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <signal.h>
+#include <errno.h>
+
+#if ((defined(sun) && !defined(SVR4)) || defined(macII)) && !defined(__GLIBC__)
+#ifndef strerror
+extern char *sys_errlist[];
+extern int sys_nerr;
+#define strerror(n) \
+ (((n) >= 0 && (n) < sys_nerr) ? sys_errlist[n] : "unknown error")
+#endif
+#endif
+
+#if defined(SVR4) || defined(__linux__) || defined(CSRG_BASED)
+#define HAS_SAVED_IDS_AND_SETEUID
+#endif
+#if defined(WIN32)
+#define HAS_NO_UIDS
+#endif
+
+#ifdef HAS_NO_UIDS
+#define doWriteConfigFile xf86writeConfigFile
+#define Local /**/
+#else
+#define Local static
+#endif
+
+Local int
+doWriteConfigFile (const char *filename, XF86ConfigPtr cptr)
+{
+ FILE *cf;
+
+ if ((cf = fopen (filename, "w")) == NULL)
+ {
+ return 0;
+ }
+
+ if (cptr->conf_comment)
+ fprintf (cf, "%s\n", cptr->conf_comment);
+
+ xf86printLayoutSection (cf, cptr->conf_layout_lst);
+
+ if (cptr->conf_files != NULL)
+ {
+ fprintf (cf, "Section \"Files\"\n");
+ xf86printFileSection (cf, cptr->conf_files);
+ fprintf (cf, "EndSection\n\n");
+ }
+
+ if (cptr->conf_modules != NULL)
+ {
+ fprintf (cf, "Section \"Module\"\n");
+ xf86printModuleSection (cf, cptr->conf_modules);
+ fprintf (cf, "EndSection\n\n");
+ }
+
+ xf86printVendorSection (cf, cptr->conf_vendor_lst);
+
+ xf86printServerFlagsSection (cf, cptr->conf_flags);
+
+ xf86printInputSection (cf, cptr->conf_input_lst);
+
+ xf86printVideoAdaptorSection (cf, cptr->conf_videoadaptor_lst);
+
+ xf86printModesSection (cf, cptr->conf_modes_lst);
+
+ xf86printMonitorSection (cf, cptr->conf_monitor_lst);
+
+ xf86printDeviceSection (cf, cptr->conf_device_lst);
+
+ xf86printScreenSection (cf, cptr->conf_screen_lst);
+
+ xf86printDRISection (cf, cptr->conf_dri);
+
+ xf86printExtensionsSection (cf, cptr->conf_extensions);
+
+ fclose(cf);
+ return 1;
+}
+
+#ifndef HAS_NO_UIDS
+
+int
+xf86writeConfigFile (const char *filename, XF86ConfigPtr cptr)
+{
+ int ret;
+
+#if !defined(HAS_SAVED_IDS_AND_SETEUID)
+ int pid, p;
+ int status;
+ void (*csig)(int);
+#else
+ int ruid, euid;
+#endif
+
+ if (getuid() != geteuid())
+ {
+
+#if !defined(HAS_SAVED_IDS_AND_SETEUID)
+ /* Need to fork to change ruid without loosing euid */
+#ifdef SIGCHLD
+ csig = signal(SIGCHLD, SIG_DFL);
+#endif
+ switch ((pid = fork()))
+ {
+ case -1:
+ ErrorF("xf86writeConfigFile(): fork failed (%s)\n",
+ strerror(errno));
+ return 0;
+ case 0: /* child */
+ if (setuid(getuid()) == -1)
+ FatalError("xf86writeConfigFile(): "
+ "setuid failed(%s)\n",
+ strerror(errno));
+ ret = doWriteConfigFile(filename, cptr);
+ exit(ret);
+ break;
+ default: /* parent */
+ do
+ {
+ p = waitpid(pid, &status, 0);
+ } while (p == -1 && errno == EINTR);
+ }
+#ifdef SIGCHLD
+ signal(SIGCHLD, csig);
+#endif
+ if (p != -1 && WIFEXITED(status) && WEXITSTATUS(status) == 0)
+ return 1; /* success */
+ else
+ return 0;
+
+#else /* HAS_SAVED_IDS_AND_SETEUID */
+
+ ruid = getuid();
+ euid = geteuid();
+
+ if (seteuid(ruid) == -1)
+ {
+ ErrorF("xf86writeConfigFile(): seteuid(%d) failed (%s)\n",
+ ruid, strerror(errno));
+ return 0;
+ }
+ ret = doWriteConfigFile(filename, cptr);
+
+ if (seteuid(euid) == -1)
+ {
+ ErrorF("xf86writeConfigFile(): seteuid(%d) failed (%s)\n",
+ euid, strerror(errno));
+ }
+ return ret;
+
+#endif /* HAS_SAVED_IDS_AND_SETEUID */
+
+ }
+ else
+ {
+ return doWriteConfigFile(filename, cptr);
+ }
+}
+
+#endif /* !HAS_NO_UIDS */