diff options
| -rw-r--r-- | src/screen.c | 56 |
1 files changed, 35 insertions, 21 deletions
diff --git a/src/screen.c b/src/screen.c index 67cddbc..06441dd 100644 --- a/src/screen.c +++ b/src/screen.c @@ -1,4 +1,7 @@ -/* Copyright (c) 2008, 2009 +/* Copyright (c) 2010 + * Juergen Weigert (jnweiger@immd4.informatik.uni-erlangen.de) + * Sadrul Habib Chowdhury (sadrul@users.sourceforge.net) + * Copyright (c) 2008, 2009 * Juergen Weigert (jnweiger@immd4.informatik.uni-erlangen.de) * Michael Schroeder (mlschroe@immd4.informatik.uni-erlangen.de) * Micah Cowan (micah@cowan.name) @@ -764,17 +767,12 @@ char **av; real_gid = getgid(); eff_uid = geteuid(); eff_gid = getegid(); - if (eff_uid != real_uid) - { - /* if running with s-bit, we must install a special signal - * handler routine that resets the s-bit, so that we get a - * core file anyway. - */ + #ifdef SIGBUS /* OOPS, linux has no bus errors! */ - signal(SIGBUS, CoreDump); + signal(SIGBUS, CoreDump); #endif /* SIGBUS */ - signal(SIGSEGV, CoreDump); - } + signal(SIGSEGV, CoreDump); + #ifdef USE_LOCALE setlocale(LC_ALL, ""); @@ -1636,39 +1634,55 @@ SigInt SIGDEFARG static sigret_t CoreDump SIGDEFARG { + /* if running with s-bit, we must reset the s-bit, so that we get a + * core file anyway. + */ + struct display *disp; char buf[80]; + char *dump_msg = " (core dumped)"; + + int running_w_s_bit = getuid() != geteuid(); +#if defined(SHADOWPW) && !defined(DEBUG) && !defined(DUMPSHADOW) + if (running_w_s_bit) + dump_msg = ""; +#endif + #if defined(SYSVSIGS) && defined(SIGHASARG) signal(sigsig, SIG_IGN); #endif setgid(getgid()); setuid(getuid()); unlink("core"); + #ifdef SIGHASARG - sprintf(buf, "\r\n[screen caught signal %d.%s]\r\n", sigsig, + sprintf(buf, "\r\n[screen caught signal %d.%s]\r\n", sigsig, dump_msg); #else - sprintf(buf, "\r\n[screen caught a fatal signal.%s]\r\n", + sprintf(buf, "\r\n[screen caught a fatal signal.%s]\r\n", dump_msg); #endif -#if defined(SHADOWPW) && !defined(DEBUG) && !defined(DUMPSHADOW) - "" -#else /* SHADOWPW && !DEBUG */ - " (core dumped)" -#endif /* SHADOWPW && !DEBUG */ - ); + for (disp = displays; disp; disp = disp->d_next) { + if (disp->d_nonblock < -1 || disp->d_nonblock > 1000000) + continue; fcntl(disp->d_userfd, F_SETFL, 0); SetTTY(disp->d_userfd, &D_OldMode); write(disp->d_userfd, buf, strlen(buf)); Kill(disp->d_userpid, SIG_BYE); } + + if (running_w_s_bit) + { #if defined(SHADOWPW) && !defined(DEBUG) && !defined(DUMPSHADOW) - Kill(getpid(), SIGKILL); - eexit(11); + Kill(getpid(), SIGKILL); + eexit(11); #else /* SHADOWPW && !DEBUG */ - abort(); + abort(); #endif /* SHADOWPW && !DEBUG */ + } + else + abort(); SIGRETURN; } |