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#include <stdio.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <unistd.h>
char *dir = "/usr/local/games/Texmaster2009-3";
char *nvfile = "Texmaster2009.ubuntu10.04.nv";
char *savfile = "Texmaster2009.ubuntu10.04.sav";
char *texexe = "./Texmaster2009.ubuntu10.04.ARCHSUFFIX";
char *launcherexe = "texmaster-launcher";
mode_t mode =
S_IRUSR | S_IWUSR |
S_IRGRP | S_IWGRP |
S_IROTH;
int fixfile (char *path) {
if (access (path, F_OK) == 0 && chmod (path, mode) != 0) {
return -1;
}
return 0;
}
int getmygid (gid_t *gid) {
struct stat buf;
if (stat (launcherexe, &buf) != 0) {
return -1;
}
*gid = buf.st_gid;
return 0;
}
int main (void) {
gid_t gid;
if (chdir (dir) != 0) {
fprintf (stderr, "failed to chdir to Texmaster dir\r\n");
return 1;
}
if (getmygid (&gid) != 0) {
fprintf (stderr, "failed to get group owner\r\n");
return 1;
}
fprintf (stderr, "gid is %d\r\n", gid);
if (setgid (gid) != 0) {
fprintf (stderr, "failed to setgid to group owner\r\n");
return 1;
}
if (fixfile (nvfile) != 0) {
fprintf (stderr, "failed to fix perm for nv file\r\n");
return 1;
}
if (fixfile (savfile) != 0) {
fprintf (stderr, "failed to fix perm for sav file\r\n");
return 1;
}
execl (texexe, texexe, NULL);
fprintf (stderr, "failed to exec Texmaster\r\n");
return 1;
}
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