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-rw-r--r--src/basic/terminal-util.c19
-rw-r--r--src/basic/terminal-util.h2
-rw-r--r--src/basic/util.c3
-rw-r--r--src/libsystemd/sd-bus/bus-container.c46
-rw-r--r--src/libsystemd/sd-bus/sd-bus.c23
-rw-r--r--src/machine/machine-dbus.c13
-rw-r--r--src/run/run.c6
7 files changed, 79 insertions, 33 deletions
diff --git a/src/basic/terminal-util.c b/src/basic/terminal-util.c
index cf55263bbf..c5ef5ab0d1 100644
--- a/src/basic/terminal-util.c
+++ b/src/basic/terminal-util.c
@@ -1074,3 +1074,22 @@ int get_ctty(pid_t pid, dev_t *_devnr, char **r) {
return 0;
}
+
+int ptsname_namespace(int pty, char **ret) {
+ int no = -1, r;
+
+ /* Like ptsname(), but doesn't assume that the path is
+ * accessible in the local namespace. */
+
+ r = ioctl(pty, TIOCGPTN, &no);
+ if (r < 0)
+ return -errno;
+
+ if (no < 0)
+ return -EIO;
+
+ if (asprintf(ret, "/dev/pts/%i", no) < 0)
+ return -ENOMEM;
+
+ return 0;
+}
diff --git a/src/basic/terminal-util.h b/src/basic/terminal-util.h
index 188714f228..b9a3809a6c 100644
--- a/src/basic/terminal-util.h
+++ b/src/basic/terminal-util.h
@@ -107,3 +107,5 @@ int get_ctty(pid_t, dev_t *_devnr, char **r);
int getttyname_malloc(int fd, char **r);
int getttyname_harder(int fd, char **r);
+
+int ptsname_namespace(int pty, char **ret);
diff --git a/src/basic/util.c b/src/basic/util.c
index 737f2a221c..f01f5f237b 100644
--- a/src/basic/util.c
+++ b/src/basic/util.c
@@ -6095,6 +6095,9 @@ int openpt_in_namespace(pid_t pid, int flags) {
if (master < 0)
_exit(EXIT_FAILURE);
+ if (unlockpt(master) < 0)
+ _exit(EXIT_FAILURE);
+
cmsg = CMSG_FIRSTHDR(&mh);
cmsg->cmsg_level = SOL_SOCKET;
cmsg->cmsg_type = SCM_RIGHTS;
diff --git a/src/libsystemd/sd-bus/bus-container.c b/src/libsystemd/sd-bus/bus-container.c
index 101e4af18d..56dc086ae2 100644
--- a/src/libsystemd/sd-bus/bus-container.c
+++ b/src/libsystemd/sd-bus/bus-container.c
@@ -125,15 +125,22 @@ int bus_container_connect_kernel(sd_bus *b) {
struct cmsghdr cmsghdr;
uint8_t buf[CMSG_SPACE(sizeof(int))];
} control = {};
+ int error_buf = 0;
+ struct iovec iov = {
+ .iov_base = &error_buf,
+ .iov_len = sizeof(error_buf),
+ };
struct msghdr mh = {
.msg_control = &control,
.msg_controllen = sizeof(control),
+ .msg_iov = &iov,
+ .msg_iovlen = 1,
};
struct cmsghdr *cmsg;
pid_t child;
siginfo_t si;
- int r;
- _cleanup_close_ int fd = -1;
+ int r, fd = -1;
+ ssize_t n;
assert(b);
assert(b->input_fd < 0);
@@ -178,10 +185,13 @@ int bus_container_connect_kernel(sd_bus *b) {
_exit(EXIT_FAILURE);
if (grandchild == 0) {
-
fd = open(b->kernel, O_RDWR|O_NOCTTY|O_CLOEXEC);
- if (fd < 0)
+ if (fd < 0) {
+ /* Try to send error up */
+ error_buf = errno;
+ (void) write(pair[1], &error_buf, sizeof(error_buf));
_exit(EXIT_FAILURE);
+ }
cmsg = CMSG_FIRSTHDR(&mh);
cmsg->cmsg_level = SOL_SOCKET;
@@ -213,20 +223,17 @@ int bus_container_connect_kernel(sd_bus *b) {
if (r < 0)
return r;
- if (si.si_code != CLD_EXITED)
- return -EIO;
-
- if (si.si_status != EXIT_SUCCESS)
- return -EIO;
-
- if (recvmsg(pair[0], &mh, MSG_NOSIGNAL|MSG_CMSG_CLOEXEC) < 0)
+ n = recvmsg(pair[0], &mh, MSG_NOSIGNAL|MSG_CMSG_CLOEXEC);
+ if (n < 0)
return -errno;
- CMSG_FOREACH(cmsg, &mh)
+ CMSG_FOREACH(cmsg, &mh) {
if (cmsg->cmsg_level == SOL_SOCKET && cmsg->cmsg_type == SCM_RIGHTS) {
int *fds;
unsigned n_fds;
+ assert(fd < 0);
+
fds = (int*) CMSG_DATA(cmsg);
n_fds = (cmsg->cmsg_len - CMSG_LEN(0)) / sizeof(int);
@@ -237,9 +244,18 @@ int bus_container_connect_kernel(sd_bus *b) {
fd = fds[0];
}
+ }
+
+ /* If there's an fd passed, we are good. */
+ if (fd >= 0) {
+ b->input_fd = b->output_fd = fd;
+ return bus_kernel_take_fd(b);
+ }
- b->input_fd = b->output_fd = fd;
- fd = -1;
+ /* If there's an error passed, use it */
+ if (n == sizeof(error_buf) && error_buf > 0)
+ return -error_buf;
- return bus_kernel_take_fd(b);
+ /* Otherwise, we have no clue */
+ return -EIO;
}
diff --git a/src/libsystemd/sd-bus/sd-bus.c b/src/libsystemd/sd-bus/sd-bus.c
index 5285278d92..4ed508427e 100644
--- a/src/libsystemd/sd-bus/sd-bus.c
+++ b/src/libsystemd/sd-bus/sd-bus.c
@@ -1025,19 +1025,30 @@ static int bus_start_address(sd_bus *b) {
if (b->exec_path)
r = bus_socket_exec(b);
+
else if ((b->nspid > 0 || b->machine) && b->kernel) {
r = bus_container_connect_kernel(b);
if (r < 0 && !IN_SET(r, -ENOENT, -ESOCKTNOSUPPORT))
container_kdbus_available = true;
- } else if (!container_kdbus_available && (b->nspid > 0 || b->machine) && b->sockaddr.sa.sa_family != AF_UNSPEC)
- r = bus_container_connect_socket(b);
- else if (b->kernel) {
+
+ } else if ((b->nspid > 0 || b->machine) && b->sockaddr.sa.sa_family != AF_UNSPEC) {
+ if (!container_kdbus_available)
+ r = bus_container_connect_socket(b);
+ else
+ skipped = true;
+
+ } else if (b->kernel) {
r = bus_kernel_connect(b);
if (r < 0 && !IN_SET(r, -ENOENT, -ESOCKTNOSUPPORT))
kdbus_available = true;
- } else if (!kdbus_available && b->sockaddr.sa.sa_family != AF_UNSPEC)
- r = bus_socket_connect(b);
- else
+
+ } else if (b->sockaddr.sa.sa_family != AF_UNSPEC) {
+ if (!kdbus_available)
+ r = bus_socket_connect(b);
+ else
+ skipped = true;
+
+ } else
skipped = true;
if (!skipped) {
diff --git a/src/machine/machine-dbus.c b/src/machine/machine-dbus.c
index af2b8eff06..a63b9785af 100644
--- a/src/machine/machine-dbus.c
+++ b/src/machine/machine-dbus.c
@@ -45,6 +45,7 @@
#include "formats-util.h"
#include "process-util.h"
#include "env-util.h"
+#include "terminal-util.h"
static int property_get_id(
sd_bus *bus,
@@ -500,7 +501,7 @@ int bus_machine_method_open_pty(sd_bus_message *message, void *userdata, sd_bus_
if (master < 0)
return master;
- r = ptsname_malloc(master, &pty_name);
+ r = ptsname_namespace(master, &pty_name);
if (r < 0)
return r;
@@ -589,7 +590,7 @@ int bus_machine_method_open_login(sd_bus_message *message, void *userdata, sd_bu
if (master < 0)
return master;
- r = ptsname_malloc(master, &pty_name);
+ r = ptsname_namespace(master, &pty_name);
if (r < 0)
return r;
@@ -597,9 +598,6 @@ int bus_machine_method_open_login(sd_bus_message *message, void *userdata, sd_bu
if (!p)
return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "PTS name %s is invalid", pty_name);
- if (unlockpt(master) < 0)
- return -errno;
-
r = container_bus_new(m, &allocated_bus);
if (r < 0)
return r;
@@ -690,7 +688,7 @@ int bus_machine_method_open_shell(sd_bus_message *message, void *userdata, sd_bu
if (master < 0)
return master;
- r = ptsname_malloc(master, &pty_name);
+ r = ptsname_namespace(master, &pty_name);
if (r < 0)
return r;
@@ -701,9 +699,6 @@ int bus_machine_method_open_shell(sd_bus_message *message, void *userdata, sd_bu
utmp_id = path_startswith(pty_name, "/dev/");
assert(utmp_id);
- if (unlockpt(master) < 0)
- return -errno;
-
r = container_bus_new(m, &allocated_bus);
if (r < 0)
return r;
diff --git a/src/run/run.c b/src/run/run.c
index a69560208c..657c6fcaf1 100644
--- a/src/run/run.c
+++ b/src/run/run.c
@@ -702,6 +702,9 @@ static int start_transient_service(
if (r < 0)
return log_error_errno(r, "Failed to determine tty name: %m");
+ if (unlockpt(master) < 0)
+ return log_error_errno(errno, "Failed to unlock tty: %m");
+
} else if (arg_transport == BUS_TRANSPORT_MACHINE) {
_cleanup_bus_unref_ sd_bus *system_bus = NULL;
const char *s;
@@ -738,9 +741,6 @@ static int start_transient_service(
return log_oom();
} else
assert_not_reached("Can't allocate tty via ssh");
-
- if (unlockpt(master) < 0)
- return log_error_errno(errno, "Failed to unlock tty: %m");
}
if (!arg_no_block) {
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-12-03 00:04:08 +0000