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Add support for IRIX-style dynamic ptys

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This commit is contained in:
Todd C. Miller
2009-10-17 12:54:07 +00:00
parent 8cb463adec
commit e5087b7269
4 changed files with 142 additions and 20 deletions
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52
pty.c
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@@ -60,7 +60,7 @@
__unused static const char rcsid[] = "$Sudo$";
#endif /* lint */
#ifdef HAVE_OPENPTY
#if defined(HAVE_OPENPTY)
int
get_pty(master, slave, name, namesz)
int *master;
@@ -80,23 +80,45 @@ get_pty(master, slave, name, namesz)
return(1);
}
#else
# ifdef HAVE_GRANTPT
# ifndef HAVE_POSIX_OPENPT
#elif defined(HAVE__GETPTY)
int
get_pty(master, slave, name, namesz)
int *master;
int *slave;
char *name;
size_t namesz;
{
char *line;
/* IRIX-style dynamic ptys (may fork) */
line = _getpty(master, O_RDWR, IRUSR|S_IWUSR|S_IWGRP, 0);
if (line == NULL)
return (0);
*slave = open(line, O_RDWR|O_NOCTTY, 0);
if (*slave == -1) {
close(*master);
return(0);
}
(void) chown(line, runas_pw->pw_uid, -1);
strlcpy(name, line, namesz);
return(1);
}
#elif defined(HAVE_GRANTPT)
# ifndef HAVE_POSIX_OPENPT
static int
posix_openpt(oflag)
int oflag;
{
int fd;
# ifdef _AIX
# ifdef _AIX
fd = open("/dev/ptc", oflag);
# else
# else
fd = open("/dev/ptmx", oflag);
# endif
# endif
return(fd);
}
# endif /* HAVE_POSIX_OPENPT */
# endif /* HAVE_POSIX_OPENPT */
int
get_pty(master, slave, name, namesz)
@@ -111,7 +133,7 @@ get_pty(master, slave, name, namesz)
if (*master == -1)
return(0);
(void) grantpt(*master);
(void) grantpt(*master); /* may fork */
if (unlockpt(*master) != 0) {
close(*master);
return(0);
@@ -126,16 +148,16 @@ get_pty(master, slave, name, namesz)
close(*master);
return(0);
}
#ifdef I_PUSH
# ifdef I_PUSH
ioctl(*slave, I_PUSH, "ptem"); /* pseudo tty emulation module */
ioctl(*slave, I_PUSH, "ldterm"); /* line discipline module */
#endif
# endif
(void) chown(line, runas_pw->pw_uid, -1);
strlcpy(name, line, namesz);
return(1);
}
# else /* !HAVE_GRANTPT */
#else /* Old-style BSD ptys */
static char line[] = "/dev/ptyXX";
@@ -166,9 +188,9 @@ get_pty(master, slave, name, namesz)
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
# ifdef HAVE_REVOKE
(void) revoke(line);
# endif
# endif
*slave = open(line, O_RDWR|O_NOCTTY, 0);
if (*slave != -1) {
strlcpy(name, line, namesz);
@@ -179,6 +201,4 @@ get_pty(master, slave, name, namesz)
}
return(0);
}
# endif /* HAVE_GRANTPT */
#endif /* HAVE_OPENPTY */