1 #include "9term.h"
2 
3 int
4 getchildwd(int pid, char *wdir, int bufn)
5 {
6 	char path[256];
7 	char cwd[256];
8 
9 	if(getcwd(cwd, sizeof cwd) < 0)
10 		return -1;
11 	snprint(path, sizeof path, "/proc/%d/cwd", pid);
12 	if(chdir(path) < 0)
13 		return -1;
14 	if(getcwd(wdir, bufn) < 0)
15 		return -1;
16 	chdir(cwd);
17 	return 0;
18 }
19 
20 int
21 getpts(int fd[], char *slave)
22 {
23 	fd[1] = open("/dev/ptmx", ORDWR);
24 	if ((grantpt(fd[1]) < 0) || (unlockpt(fd[1]) < 0))
25 		return -1;
26 	fchmod(fd[1], 0622);
27 	strcpy(slave, ptsname(fd[1]));
28 	fd[0] = open(slave, OREAD);
29 	return 0;
30 }