diff options
Diffstat (limited to 'sys/kern/uipc_syscalls.c')
| -rw-r--r-- | sys/kern/uipc_syscalls.c | 35 |
1 files changed, 21 insertions, 14 deletions
diff --git a/sys/kern/uipc_syscalls.c b/sys/kern/uipc_syscalls.c index 1bcd02e..ae1e203 100644 --- a/sys/kern/uipc_syscalls.c +++ b/sys/kern/uipc_syscalls.c @@ -89,20 +89,23 @@ static int sockargs(struct mbuf **, char *, socklen_t, int); /* * Convert a user file descriptor to a kernel file entry and check if required * capability rights are present. + * If required copy of current set of capability rights is returned. * A reference on the file entry is held upon returning. */ int getsock_cap(struct thread *td, int fd, cap_rights_t *rightsp, - struct file **fpp, u_int *fflagp) + struct file **fpp, u_int *fflagp, struct filecaps *havecapsp) { struct file *fp; int error; - error = fget_unlocked(td->td_proc->p_fd, fd, rightsp, &fp, NULL); + error = fget_cap(td, fd, rightsp, &fp, havecapsp); if (error != 0) return (error); if (fp->f_type != DTYPE_SOCKET) { fdrop(fp, td); + if (havecapsp != NULL) + filecaps_free(havecapsp); return (ENOTSOCK); } if (fflagp != NULL) @@ -201,7 +204,7 @@ kern_bindat(struct thread *td, int dirfd, int fd, struct sockaddr *sa) AUDIT_ARG_FD(fd); AUDIT_ARG_SOCKADDR(td, dirfd, sa); error = getsock_cap(td, fd, cap_rights_init(&rights, CAP_BIND), - &fp, NULL); + &fp, NULL, NULL); if (error != 0) return (error); so = fp->f_data; @@ -262,7 +265,7 @@ sys_listen(td, uap) AUDIT_ARG_FD(uap->s); error = getsock_cap(td, uap->s, cap_rights_init(&rights, CAP_LISTEN), - &fp, NULL); + &fp, NULL, NULL); if (error == 0) { so = fp->f_data; #ifdef MAC @@ -335,6 +338,7 @@ kern_accept4(struct thread *td, int s, struct sockaddr **name, struct file *headfp, *nfp = NULL; struct sockaddr *sa = NULL; struct socket *head, *so; + struct filecaps fcaps; cap_rights_t rights; u_int fflag; pid_t pgid; @@ -345,7 +349,7 @@ kern_accept4(struct thread *td, int s, struct sockaddr **name, AUDIT_ARG_FD(s); error = getsock_cap(td, s, cap_rights_init(&rights, CAP_ACCEPT), - &headfp, &fflag); + &headfp, &fflag, &fcaps); if (error != 0) return (error); head = headfp->f_data; @@ -358,7 +362,8 @@ kern_accept4(struct thread *td, int s, struct sockaddr **name, if (error != 0) goto done; #endif - error = falloc(td, &nfp, &fd, (flags & SOCK_CLOEXEC) ? O_CLOEXEC : 0); + error = falloc_caps(td, &nfp, &fd, + (flags & SOCK_CLOEXEC) ? O_CLOEXEC : 0, &fcaps); if (error != 0) goto done; ACCEPT_LOCK(); @@ -467,6 +472,8 @@ noconnection: * a reference on nfp to the caller on success if they request it. */ done: + if (nfp == NULL) + filecaps_free(&fcaps); if (fp != NULL) { if (error == 0) { *fp = nfp; @@ -545,7 +552,7 @@ kern_connectat(struct thread *td, int dirfd, int fd, struct sockaddr *sa) AUDIT_ARG_FD(fd); AUDIT_ARG_SOCKADDR(td, dirfd, sa); error = getsock_cap(td, fd, cap_rights_init(&rights, CAP_CONNECT), - &fp, NULL); + &fp, NULL, NULL); if (error != 0) return (error); so = fp->f_data; @@ -805,7 +812,7 @@ kern_sendit(td, s, mp, flags, control, segflg) AUDIT_ARG_SOCKADDR(td, AT_FDCWD, mp->msg_name); cap_rights_set(&rights, CAP_CONNECT); } - error = getsock_cap(td, s, &rights, &fp, NULL); + error = getsock_cap(td, s, &rights, &fp, NULL, NULL); if (error != 0) { m_freem(control); return (error); @@ -1013,7 +1020,7 @@ kern_recvit(td, s, mp, fromseg, controlp) AUDIT_ARG_FD(s); error = getsock_cap(td, s, cap_rights_init(&rights, CAP_RECV), - &fp, NULL); + &fp, NULL, NULL); if (error != 0) return (error); so = fp->f_data; @@ -1328,7 +1335,7 @@ sys_shutdown(td, uap) AUDIT_ARG_FD(uap->s); error = getsock_cap(td, uap->s, cap_rights_init(&rights, CAP_SHUTDOWN), - &fp, NULL); + &fp, NULL, NULL); if (error == 0) { so = fp->f_data; error = soshutdown(so, uap->how); @@ -1402,7 +1409,7 @@ kern_setsockopt(td, s, level, name, val, valseg, valsize) AUDIT_ARG_FD(s); error = getsock_cap(td, s, cap_rights_init(&rights, CAP_SETSOCKOPT), - &fp, NULL); + &fp, NULL, NULL); if (error == 0) { so = fp->f_data; error = sosetopt(so, &sopt); @@ -1483,7 +1490,7 @@ kern_getsockopt(td, s, level, name, val, valseg, valsize) AUDIT_ARG_FD(s); error = getsock_cap(td, s, cap_rights_init(&rights, CAP_GETSOCKOPT), - &fp, NULL); + &fp, NULL, NULL); if (error == 0) { so = fp->f_data; error = sogetopt(so, &sopt); @@ -1544,7 +1551,7 @@ kern_getsockname(struct thread *td, int fd, struct sockaddr **sa, AUDIT_ARG_FD(fd); error = getsock_cap(td, fd, cap_rights_init(&rights, CAP_GETSOCKNAME), - &fp, NULL); + &fp, NULL, NULL); if (error != 0) return (error); so = fp->f_data; @@ -1643,7 +1650,7 @@ kern_getpeername(struct thread *td, int fd, struct sockaddr **sa, AUDIT_ARG_FD(fd); error = getsock_cap(td, fd, cap_rights_init(&rights, CAP_GETPEERNAME), - &fp, NULL); + &fp, NULL, NULL); if (error != 0) return (error); so = fp->f_data; |
