#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)
#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:
if (setuid(getuid()) == -1)
FatalError("xf86writeConfigFile(): "
"setuid failed(%s)\n",
strerror(errno));
ret = doWriteConfigFile(filename, cptr);
exit(ret);
break;
default:
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;
else
return 0;
#else
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
}
else
{
return doWriteConfigFile(filename, cptr);
}
}
#endif