e8ddc0f46e
- For security reasons move some libc code to PFS. - Fix a few bugs in PFS. Contributed by Thomas Cort.
135 lines
2.7 KiB
C
135 lines
2.7 KiB
C
#undef NDEBUG
|
|
|
|
#include <errno.h>
|
|
#include <net/ioctl.h>
|
|
#include <stdlib.h>
|
|
#include <sys/ioctl.h>
|
|
#include <sys/socket.h>
|
|
#include <sys/types.h>
|
|
#include <sys/un.h>
|
|
|
|
#define DEBUG 0
|
|
|
|
static ssize_t _uds_sendmsg_conn(int socket, const struct msghdr *msg,
|
|
int flags);
|
|
static ssize_t _uds_sendmsg_dgram(int socket, const struct msghdr *msg,
|
|
int flags);
|
|
|
|
ssize_t sendmsg(int socket, const struct msghdr *msg, int flags)
|
|
{
|
|
int r;
|
|
int uds_sotype;
|
|
|
|
if (msg == NULL) {
|
|
errno= EFAULT;
|
|
return -1;
|
|
}
|
|
|
|
r= ioctl(socket, NWIOGUDSSOTYPE, &uds_sotype);
|
|
if (r != -1 || (errno != ENOTTY && errno != EBADIOCTL)) {
|
|
if (r == -1) {
|
|
return r;
|
|
}
|
|
|
|
if (uds_sotype == SOCK_DGRAM) {
|
|
return _uds_sendmsg_dgram(socket, msg, flags);
|
|
} else {
|
|
return _uds_sendmsg_conn(socket, msg, flags);
|
|
}
|
|
|
|
}
|
|
|
|
#if DEBUG
|
|
fprintf(stderr, "sendmsg: not implemented for fd %d\n", socket);
|
|
#endif
|
|
|
|
errno= ENOSYS;
|
|
return -1;
|
|
}
|
|
|
|
static ssize_t _uds_sendmsg_conn(int socket, const struct msghdr *msg,
|
|
int flags)
|
|
{
|
|
struct msg_control msg_ctrl;
|
|
int r;
|
|
|
|
if (flags != 0) {
|
|
#if DEBUG
|
|
fprintf(stderr, "sendmsg(uds): flags not implemented\n");
|
|
#endif
|
|
errno= ENOSYS;
|
|
return -1;
|
|
|
|
}
|
|
|
|
/* grab the control data */
|
|
memset(&msg_ctrl, '\0', sizeof(struct msg_control));
|
|
if (msg->msg_controllen > MSG_CONTROL_MAX) {
|
|
errno = ENOMEM;
|
|
return -1;
|
|
} else if (msg->msg_controllen > 0) {
|
|
memcpy(&msg_ctrl.msg_control, msg->msg_control,
|
|
msg->msg_controllen);
|
|
}
|
|
msg_ctrl.msg_controllen = msg->msg_controllen;
|
|
|
|
/* send the control data to PFS */
|
|
r= ioctl(socket, NWIOSUDSCTRL, (void *) &msg_ctrl);
|
|
if (r == -1) {
|
|
return r;
|
|
}
|
|
|
|
/* Silently ignore destination, if given. */
|
|
|
|
return writev(socket, msg->msg_iov, msg->msg_iovlen);
|
|
}
|
|
|
|
static ssize_t _uds_sendmsg_dgram(int socket, const struct msghdr *msg,
|
|
int flags)
|
|
{
|
|
struct msg_control msg_ctrl;
|
|
struct sockaddr_un *dest_addr;
|
|
int i, r;
|
|
|
|
if (flags != 0) {
|
|
#if DEBUG
|
|
fprintf(stderr, "sendmsg(uds): flags not implemented\n");
|
|
#endif
|
|
errno= ENOSYS;
|
|
return -1;
|
|
|
|
}
|
|
|
|
dest_addr = msg->msg_name;
|
|
if (dest_addr == NULL) {
|
|
errno= EFAULT;
|
|
return -1;
|
|
}
|
|
|
|
/* set the target address */
|
|
r= ioctl(socket, NWIOSUDSTADDR, (void *) dest_addr);
|
|
if (r == -1) {
|
|
return r;
|
|
}
|
|
|
|
/* grab the control data */
|
|
memset(&msg_ctrl, '\0', sizeof(struct msg_control));
|
|
if (msg->msg_controllen > MSG_CONTROL_MAX) {
|
|
errno = ENOMEM;
|
|
return -1;
|
|
} else if (msg->msg_controllen > 0) {
|
|
memcpy(&msg_ctrl.msg_control, msg->msg_control,
|
|
msg->msg_controllen);
|
|
}
|
|
msg_ctrl.msg_controllen = msg->msg_controllen;
|
|
|
|
/* send the control data to PFS */
|
|
r= ioctl(socket, NWIOSUDSCTRL, (void *) &msg_ctrl);
|
|
if (r == -1) {
|
|
return r;
|
|
}
|
|
|
|
/* do the send */
|
|
return writev(socket, msg->msg_iov, msg->msg_iovlen);
|
|
}
|