Edit
IABSD.fr/xenocara/xserver/hw/xfree86/parser/write.c
matthieu
- xserver/hw/xfree86/parser/write.c
-
/* * 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). */ #ifdef HAVE_XORG_CONFIG_H #include <xorg-config.h> #endif #include "os.h" #include "xf86Parser.h" #include "xf86tokens.h" #include "Configint.h" #include <unistd.h> #include <sys/types.h> #include <sys/wait.h> #include <errno.h> #if defined(HAVE_SETEUID) && defined(_POSIX_SAVED_IDS) && _POSIX_SAVED_IDS > 0 #define HAS_SAVED_IDS_AND_SETEUID #endif #if defined(WIN32) #define HAS_NO_UIDS #endif static 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); xf86printInputClassSection(cf, cptr->conf_inputclass_lst); xf86printOutputClassSection(cf, cptr->conf_outputclass_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; } int xf86writeConfigFile(const char *filename, XF86ConfigPtr cptr) { #ifndef HAS_NO_UIDS int ret; if (getuid() != geteuid()) { #if !defined(HAS_SAVED_IDS_AND_SETEUID) int pid, p; int status; void (*csig) (int); /* Need to fork to change ruid without losing euid */ csig = OsSignal(SIGCHLD, SIG_DFL); 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); } OsSignal(SIGCHLD, csig); if (p != -1 && WIFEXITED(status) && WEXITSTATUS(status) == 0) return 1; /* success */ else return 0; #else /* HAS_SAVED_IDS_AND_SETEUID */ int ruid, euid; 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 #endif /* !HAS_NO_UIDS */ return doWriteConfigFile(filename, cptr); }