diff options
Diffstat (limited to 'src/basic')
| -rw-r--r-- | src/basic/terminal-util.c | 48 | ||||
| -rw-r--r-- | src/basic/terminal-util.h | 1 |
2 files changed, 49 insertions, 0 deletions
diff --git a/src/basic/terminal-util.c b/src/basic/terminal-util.c index 50a86a331c..e9097d8ae5 100644 --- a/src/basic/terminal-util.c +++ b/src/basic/terminal-util.c @@ -1152,3 +1152,51 @@ int openpt_in_namespace(pid_t pid, int flags) { return receive_one_fd(pair[0], 0); } + +int open_terminal_in_namespace(pid_t pid, const char *name, int mode) { + _cleanup_close_ int pidnsfd = -1, mntnsfd = -1, usernsfd = -1, rootfd = -1; + _cleanup_close_pair_ int pair[2] = { -1, -1 }; + siginfo_t si; + pid_t child; + int r; + + r = namespace_open(pid, &pidnsfd, &mntnsfd, NULL, &usernsfd, &rootfd); + if (r < 0) + return r; + + if (socketpair(AF_UNIX, SOCK_DGRAM, 0, pair) < 0) + return -errno; + + child = fork(); + if (child < 0) + return -errno; + + if (child == 0) { + int master; + + pair[0] = safe_close(pair[0]); + + r = namespace_enter(pidnsfd, mntnsfd, -1, usernsfd, rootfd); + if (r < 0) + _exit(EXIT_FAILURE); + + master = open_terminal(name, mode|O_NOCTTY|O_CLOEXEC); + if (master < 0) + _exit(EXIT_FAILURE); + + if (send_one_fd(pair[1], master, 0) < 0) + _exit(EXIT_FAILURE); + + _exit(EXIT_SUCCESS); + } + + pair[1] = safe_close(pair[1]); + + r = wait_for_terminate(child, &si); + if (r < 0) + return r; + if (si.si_code != CLD_EXITED || si.si_status != EXIT_SUCCESS) + return -EIO; + + return receive_one_fd(pair[0], 0); +} diff --git a/src/basic/terminal-util.h b/src/basic/terminal-util.h index 050d0524a5..ee0b68b433 100644 --- a/src/basic/terminal-util.h +++ b/src/basic/terminal-util.h @@ -124,3 +124,4 @@ int ptsname_malloc(int fd, char **ret); int ptsname_namespace(int pty, char **ret); int openpt_in_namespace(pid_t pid, int flags); +int open_terminal_in_namespace(pid_t pid, const char *name, int mode); |