--- konsole/src/konsole_grantpty.c.orig Sat Jun 12 07:13:31 1999 +++ konsole/src/konsole_grantpty.c Fri Dec 8 11:54:43 2000 @@ -31,13 +31,15 @@ #include #include #include +#include +#include #define PTY_FILENO 3 /* keep in sync with grantpty */ #define TTY_GROUP "tty" int main (int argc, char *argv[]) { - char* pty; + char* pty = NULL; struct stat st; struct group* p; gid_t gid; @@ -81,6 +83,7 @@ /* get slave pty name from master pty file handle in PTY_FILENO *********/ +#if 0 /* Check that PTY_FILENO is a valid master pseudo terminal. */ pty = ttyname(PTY_FILENO); /* posix */ if (pty == NULL) @@ -89,6 +92,42 @@ return 1; /* FAIL */ } close(PTY_FILENO); +#else + /* The trouble with the ifdef'd-out portion above is that ttyname() + ** does not work correctly when not passed a valid tty, but a pseudotty + ** instead. All we're doing here is finding out what the name of + ** the associated pty is without having to pass it in on the command line. + ** Nothing complex. + */ + { + struct stat sb; + struct stat dsb; + struct dirent *dirp; + static char buf[sizeof(_PATH_DEV) + MAXNAMLEN] = _PATH_DEV; + DIR *dp; + + pty = NULL; + + if (fstat(PTY_FILENO, &sb)) + return 1; /* FAIL */ + if ((dp = opendir(_PATH_DEV)) == NULL) + return 1; /* FAIL */ + + while ((dirp = readdir(dp))) { + if (dirp->d_fileno != sb.st_ino) + continue; + bcopy(dirp->d_name, buf + sizeof(_PATH_DEV) - 1, dirp->d_namlen+1); + /*fprintf(stderr, "looking at %s\n", buf);*/ + if (stat(buf, &dsb) || sb.st_dev != dsb.st_dev || sb.st_ino != dsb.st_ino) + continue; + pty = buf; + } + closedir(dp); + if (pty == NULL) + return 1; /* FAIL */ + } + /*fprintf(stderr, "successful at finding %s\n", pty);*/ +#endif /* matches /dev/pty?? */ if (strlen(pty) < 8 || strncmp(pty,"/dev/pty",8)) @@ -120,6 +159,8 @@ fprintf(stderr,"%s: cannot chmod %s.\n",argv[0],tty); perror("Reason"); return 1; /* FAIL */ } + + /*fprintf(stderr, "made it here\n");*/ return 0; /* OK */ }