nss_status_t _nscd_doorcall(int callnum) { size_t buflen; nss_pheader_t *phdr; void *dptr; size_t ndata; size_t adata; int ret; char *me = "_nscd_doorcall"; _NSCD_LOG(NSCD_LOG_FRONT_END, NSCD_LOG_LEVEL_DEBUG) (me, "processing door call %d ...\n", callnum); /* allocate door buffer from the stack */ NSCD_ALLOC_DOORBUF(callnum, 0, dptr, buflen); ndata = buflen; adata = buflen; ret = _nsc_trydoorcall(&dptr, &ndata, &adata); if (ret != NSS_SUCCESS) { phdr = (nss_pheader_t *)dptr; _NSCD_LOG(NSCD_LOG_FRONT_END, NSCD_LOG_LEVEL_DEBUG) (me, "door call (%d) failed (status = %d, error = %s)\n", callnum, ret, strerror(NSCD_GET_ERRNO(phdr))); } return (ret); }
nss_status_t _nscd_doorcall_data(int callnum, void *indata, int indlen, void *outdata, int outdlen, nss_pheader_t *phdr) { void *uptr; size_t buflen; void *dptr; void *datap; size_t ndata; size_t adata; nss_pheader_t *phdr_d; int ret; char *me = "_nscd_doorcall_data"; _NSCD_LOG(NSCD_LOG_FRONT_END, NSCD_LOG_LEVEL_DEBUG) (me, "processing door call %d ...\n", callnum); /* allocate door buffer from the stack */ NSCD_ALLOC_DOORBUF(callnum, indlen, uptr, buflen); dptr = uptr; ndata = buflen; adata = buflen; datap = NSCD_N2N_DOOR_DATA(void, dptr); if (indata != NULL) (void) memmove(datap, indata, indlen); ret = _nsc_trydoorcall(&dptr, &ndata, &adata); phdr_d = (nss_pheader_t *)dptr; if (ret != NSS_SUCCESS) { _NSCD_LOG(NSCD_LOG_FRONT_END, NSCD_LOG_LEVEL_DEBUG) (me, "door call (%d) failed (status = %d, error = %s)\n", callnum, ret, strerror(NSCD_GET_ERRNO(phdr_d))); } else { if (phdr != NULL) { NSCD_COPY_STATUS(phdr, phdr_d); } ret = copy_output(outdata, outdlen, phdr_d, phdr); } /* if new buffer allocated for this door call, free it */ if (dptr != uptr) (void) munmap(dptr, ndata); return (ret); }
static void selfcred_fork( void *buf, int doorfd, int cslot, uid_t uid, gid_t gid) { int ret; nscd_fork_t f; nss_pheader_t *phdr = (nss_pheader_t *)buf; char *me = "selfcred_fork"; /* if no door fd, do nothing */ if (doorfd == -1) { NSCD_SET_N2N_STATUS(phdr, NSS_NSCD_PRIV, 0, NSCD_SELF_CRED_NO_DOOR); } _NSCD_LOG(NSCD_LOG_SELF_CRED, NSCD_LOG_LEVEL_DEBUG) (me, "sending fork request to door %d for slot %d " "(uid = %d, gid = %d)\n", doorfd, cslot, uid, gid); f.slot = cslot; f.uid = uid; f.gid = gid; ret = _nscd_doorcall_fd(doorfd, NSCD_FORK|(_whoami&NSCD_WHOAMI), &f, sizeof (f), NULL, 0, phdr); _NSCD_LOG(NSCD_LOG_SELF_CRED, NSCD_LOG_LEVEL_DEBUG) (me, "fork request sent to door %d for slot %d (rc = %d)\n", doorfd, cslot, ret); if (NSCD_STATUS_IS_NOT_OK(phdr)) { _NSCD_LOG(NSCD_LOG_SELF_CRED, NSCD_LOG_LEVEL_DEBUG) (me, "fork request sent to door %d for slot %d failed: " "status = %d, errno = %s, nscd status = %d\n", doorfd, cslot, NSCD_GET_STATUS(phdr), strerror(NSCD_GET_ERRNO(phdr)), NSCD_GET_NSCD_STATUS(phdr)); } }
nss_status_t _nscd_doorcall_sendfd(int fd, int callnum, void *indata, int indlen, nss_pheader_t *phdr) { void *uptr; void *dptr; void *datap; size_t ndata; size_t adata; size_t buflen; nss_pheader_t *phdr_d; door_desc_t desc; char *me = "_nscd_doorcall_sendfd"; _NSCD_LOG(NSCD_LOG_FRONT_END, NSCD_LOG_LEVEL_DEBUG) (me, "processing door call %d (fd = %d)...\n", callnum, fd); /* allocate door buffer from the stack */ NSCD_ALLOC_DOORBUF(callnum, indlen, uptr, buflen); dptr = uptr; ndata = buflen; adata = buflen; datap = NSCD_N2N_DOOR_DATA(void, dptr); if (indata != NULL) (void) memmove(datap, indata, indlen); desc.d_attributes = DOOR_DESCRIPTOR; desc.d_data.d_desc.d_descriptor = fd; send_doorfd(&dptr, &ndata, &adata, &desc); phdr_d = (nss_pheader_t *)dptr; if (NSCD_STATUS_IS_NOT_OK(phdr_d)) { if (phdr != NULL) *phdr = *phdr_d; _NSCD_LOG(NSCD_LOG_FRONT_END, NSCD_LOG_LEVEL_DEBUG) (me, "door call (%d) failed (status = %d, error = %s)\n", callnum, NSCD_GET_STATUS(phdr_d), strerror(NSCD_GET_ERRNO(phdr_d))); } return (NSCD_GET_STATUS(phdr_d)); }
nss_status_t _nscd_doorcall_fd(int fd, int callnum, void *indata, int indlen, void *outdata, int outdlen, nss_pheader_t *phdr) { void *uptr; void *dptr; void *datap; size_t ndata; size_t adata; size_t buflen; door_arg_t param; int ret, errnum; nss_pheader_t *phdr_d; char *me = "_nscd_doorcall_fd"; _NSCD_LOG(NSCD_LOG_FRONT_END, NSCD_LOG_LEVEL_DEBUG) (me, "processing door call %d (fd = %d)...\n", callnum, fd); /* allocate door buffer from the stack */ NSCD_ALLOC_DOORBUF(callnum, indlen, uptr, buflen); dptr = uptr; ndata = buflen; adata = buflen; datap = NSCD_N2N_DOOR_DATA(void, dptr); if (indata != NULL) (void) memmove(datap, indata, indlen); param.rbuf = (char *)dptr; param.rsize = ndata; param.data_ptr = (char *)dptr; param.data_size = adata; param.desc_ptr = NULL; param.desc_num = 0; ret = door_call(fd, ¶m); if (ret < 0) { errnum = errno; /* * door call did not get through, return errno * if requested */ if (phdr != NULL) { NSCD_SET_STATUS(phdr, NSS_ERROR, errnum); } _NSCD_LOG(NSCD_LOG_FRONT_END, NSCD_LOG_LEVEL_DEBUG) (me, "door call (%d to %d) did not get through (%s)\n", callnum, fd, strerror(errnum)); return (NSS_ERROR); } ndata = param.rsize; dptr = (void *)param.data_ptr; /* * door call got through, check if operation failed. * if so, return error info if requested */ phdr_d = (nss_pheader_t *)dptr; ret = NSCD_GET_STATUS(phdr_d); if (ret != NSS_SUCCESS) { if (phdr != NULL) { NSCD_COPY_STATUS(phdr, phdr_d); } _NSCD_LOG(NSCD_LOG_FRONT_END, NSCD_LOG_LEVEL_DEBUG) (me, "door call (%d to %d) failed: p_status = %d, " "p_errno = %s, nscd status = %d\n", callnum, fd, ret, strerror(NSCD_GET_ERRNO(phdr_d)), NSCD_GET_NSCD_STATUS(phdr_d)); } else ret = copy_output(outdata, outdlen, phdr_d, phdr); /* if new buffer allocated for this door call, free it */ if (dptr != uptr) (void) munmap(dptr, param.rsize); return (ret); }