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Add UNIX98 pty support.

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This commit is contained in:
Todd C. Miller
2009-08-08 00:26:13 +00:00
parent 92dcfa8963
commit c3c6c299e3
3 changed files with 265 additions and 17 deletions
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74
script.c
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@@ -87,12 +87,12 @@ static int get_pty __P((int *master, int *slave));
/*
* TODO: run monitor as root?
* get_pty for unix98 pty
* if stdin not tty, just use sane defaults
* fix sigchild
*/
static int fdcompar(v1, v2)
static int
fdcompar(v1, v2)
const void *v1;
const void *v2;
{
@@ -462,7 +462,8 @@ sigwinch(signo)
}
#ifdef HAVE_OPENPTY
static int get_pty(master, slave)
static int
get_pty(master, slave)
int *master;
int *slave;
{
@@ -480,9 +481,59 @@ static int get_pty(master, slave)
}
#else
# ifdef HAVE_GRANTPT
# ifndef HAVE_POSIX_OPENPT
static int
posix_openpt(oflag)
int oflag;
{
int fd;
# ifdef _AIX
fd = open("/dev/ptc", oflag);
# else
fd = open("/dev/ptmx", oflag);
# endif
return(fd);
}
# endif HAVE_POSIX_OPENPT
static int
get_pty(master, slave)
int *master;
int *slave;
{
char *line;
*master = posix_openpt(O_RDWR);
if (*master == -1)
return(0);
if (unlockpt(*master) != 0) {
close(*master);
return(0);
}
(void) grantpt(*master);
line = ptsname(*master);
if (line == NULL) {
close(*master);
return(0);
}
*slave = open(line, O_RDWR, 0);
if (*slave == -1) {
close(*master);
return(0);
}
(void) chown(line, runas_pw->pw_uid, -1);
return(1);
}
# else /* !HAVE_GRANTPT */
static char line[] = "/dev/ptyXX";
static int get_pty(master, slave)
static int
get_pty(master, slave)
int *master;
int *slave;
{
@@ -504,18 +555,19 @@ static int get_pty(master, slave)
continue; /* already in use */
}
line[sizeof("/dev/p") - 2] = 't';
(void)chown(line, runas_pw->pw_uid, ttygid);
(void)chmod(line, S_IRUSR|S_IWUSR|S_IWGRP);
#ifdef HAVE_REVOKE
(void)revoke(line);
#endif
(void) chown(line, runas_pw->pw_uid, ttygid);
(void) chmod(line, S_IRUSR|S_IWUSR|S_IWGRP);
# ifdef HAVE_REVOKE
(void) revoke(line);
# endif
*slave = open(line, O_RDWR, 0);
if (*slave != -1)
return(1); /* success */
(void)close(*master);
(void) close(*master);
}
}
return(0);
}
#endif
# endif /* HAVE_GRANTPT */
#endif /* HAVE_OPENPTY */