15 15
# include <libutil.h>
16 16
#elif defined(__OpenBSD__) || defined(__NetBSD__) || defined(__APPLE__)
17 17
# include <util.h>
18 -
#elif !defined(__sun)
18 +
#elif defined(__sun)
19 +
# include <sys/stream.h>
20 +
# include <sys/syscall.h>
21 +
# include <fcntl.h>
22 +
# include <unistd.h>
23 +
# include <signal.h>
24 +
#else
19 25
# include <pty.h>
20 26
#endif
21 27 38 44
# include "os/pty_process_unix.c.generated.h"
39 45
#endif
40 46 47 +
#if defined(__sun) && !defined(HAVE_FORKPTY)
48 + 49 +
// this header defines STR, just as nvim.h, but it is defined as ('S'<<8),
50 +
// to avoid #undef STR, #undef STR, #define STR ('S'<<8) just delay the
51 +
// inclusion of the header even though it gets include out of order.
52 +
#include <sys/stropts.h>
53 + 54 +
static int openpty(int *amaster, int *aslave, char *name,
55 +
struct termios *termp, struct winsize *winp)
56 +
{
57 +
int slave = -1;
58 +
int master = open("/dev/ptmx", O_RDWR);
59 +
if (master == -1) {
60 +
goto error;
61 +
}
62 + 63 +
// grantpt will invoke a setuid program to change permissions
64 +
// and might fail if SIGCHLD handler is set, temporarily reset
65 +
// while running
66 +
void(*sig_saved)(int) = signal(SIGCHLD, SIG_DFL);
67 +
int res = grantpt(master);
68 +
signal(SIGCHLD, sig_saved);
69 + 70 +
if (res == -1 || unlockpt(master) == -1) {
71 +
goto error;
72 +
}
73 + 74 +
char *slave_name = ptsname(master);
75 +
if (slave_name == NULL) {
76 +
goto error;
77 +
}
78 + 79 +
slave = open(slave_name, O_RDWR|O_NOCTTY);
80 +
if (slave == -1) {
81 +
goto error;
82 +
}
83 + 84 +
// ptem emulates a terminal when used on a pseudo terminal driver,
85 +
// must be pushed before ldterm
86 +
ioctl(slave, I_PUSH, "ptem");
87 +
// ldterm provides most of the termio terminal interface
88 +
ioctl(slave, I_PUSH, "ldterm");
89 +
// ttcompat compatability with older terminal ioctls
90 +
ioctl(slave, I_PUSH, "ttcompat");
91 + 92 +
if (termp) {
93 +
tcsetattr(slave, TCSAFLUSH, termp);
94 +
}
95 +
if (winp) {
96 +
ioctl(slave, TIOCSWINSZ, winp);
97 +
}
98 + 99 +
*amaster = master;
100 +
*aslave = slave;
101 +
// ignoring name, not passed and size is unknown in the API
102 + 103 +
return 0;
104 + 105 +
error:
106 +
if (slave != -1) {
107 +
close(slave);
108 +
}
109 +
if (master != -1) {
110 +
close(master);
111 +
}
112 +
return -1;
113 +
}
114 + 115 +
static int login_tty(int fd)
116 +
{
117 +
setsid();
118 +
if (ioctl(fd, TIOCSCTTY, NULL) == -1) {
119 +
return -1;
120 +
}
121 + 122 +
dup2(fd, STDIN_FILENO);
123 +
dup2(fd, STDOUT_FILENO);
124 +
dup2(fd, STDERR_FILENO);
125 +
if (fd > STDERR_FILENO) {
126 +
close(fd);
127 +
}
128 + 129 +
return 0;
130 +
}
131 + 132 +
static pid_t forkpty(int *amaster, char *name,
133 +
struct termios *termp, struct winsize *winp)
134 +
{
135 +
int master, slave;
136 +
if (openpty(&master, &slave, name, termp, winp) == -1) {
137 +
return -1;
138 +
}
139 + 140 +
pid_t pid = fork();
141 +
switch (pid) {
142 +
case -1:
143 +
close(master);
144 +
close(slave);
145 +
return -1;
146 +
case 0:
147 +
close(master);
148 +
login_tty(slave);
149 +
return 0;
150 +
default:
151 +
close(slave);
152 +
*amaster = master;
153 +
return pid;
154 +
}
155 +
}
156 + 157 +
#endif
158 + 41 159
/// termios saved at startup (for TUI) or initialized by pty_process_spawn().
42 160
static struct termios termios_default;
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