commit - ac9807823f31ed4344f3ff888bab1bfd9633f48e
commit + fb5efbfa169054918df195176f45ec9e5c14a78f
blob - 83d656a5ddf332bb0cb27a4bf8fc2b8b9d7a0407
blob + c4854085332adce4b46ad24c4dea702ac2c5392a
--- compats.c
+++ compats.c
#endif
#endif /* !HAVE_GETPROGNAME */
#if !HAVE_LIB_IMSG
-/* $OpenBSD: imsg-buffer.c,v 1.16 2023/06/19 17:19:50 claudio Exp $ */
-/* $OpenBSD: imsg.c,v 1.19 2023/06/19 17:19:50 claudio Exp $ */
+/* $OpenBSD: imsg-buffer.c,v 1.18 2023/12/12 15:47:41 claudio Exp $ */
+/* $OpenBSD: imsg.c,v 1.23 2023/12/12 15:47:41 claudio Exp $ */
/*
+ * Copyright (c) 2023 Claudio Jeker <claudio@openbsd.org>
* Copyright (c) 2003, 2004 Henning Brauer <henning@openbsd.org>
*
* Permission to use, copy, modify, and distribute this software for any
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
-#include "config.h"
-
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/uio.h>
#include <limits.h>
#include <errno.h>
#include <endian.h>
+#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
{
struct ibuf *buf;
- if (max < len) {
+ if (max == 0 || max < len) {
errno = EINVAL;
return (NULL);
}
{
void *b;
- if (len > SIZE_MAX - buf->wpos) {
+ if (len > SIZE_MAX - buf->wpos || buf->max == 0) {
errno = ERANGE;
return (NULL);
}
b = buf->buf + buf->wpos;
buf->wpos += len;
- memset(b, 0, len);
return (b);
}
memcpy(b, data, len);
return (0);
+}
+
+int
+ibuf_add_ibuf(struct ibuf *buf, const struct ibuf *from)
+{
+ return ibuf_add(buf, ibuf_data(from), ibuf_size(from));
}
+/* remove after tree is converted */
int
ibuf_add_buf(struct ibuf *buf, const struct ibuf *from)
{
- return ibuf_add(buf, from->buf, from->wpos);
+ return ibuf_add_ibuf(buf, from);
}
int
}
int
+ibuf_add_h16(struct ibuf *buf, uint64_t value)
+{
+ uint16_t v;
+
+ if (value > UINT16_MAX) {
+ errno = EINVAL;
+ return (-1);
+ }
+ v = value;
+ return ibuf_add(buf, &v, sizeof(v));
+}
+
+int
+ibuf_add_h32(struct ibuf *buf, uint64_t value)
+{
+ uint32_t v;
+
+ if (value > UINT32_MAX) {
+ errno = EINVAL;
+ return (-1);
+ }
+ v = value;
+ return ibuf_add(buf, &v, sizeof(v));
+}
+
+int
+ibuf_add_h64(struct ibuf *buf, uint64_t value)
+{
+ return ibuf_add(buf, &value, sizeof(value));
+}
+
+int
ibuf_add_zero(struct ibuf *buf, size_t len)
{
void *b;
if ((b = ibuf_reserve(buf, len)) == NULL)
return (-1);
+ memset(b, 0, len);
return (0);
}
void *
ibuf_seek(struct ibuf *buf, size_t pos, size_t len)
{
- /* only allowed to seek in already written parts */
- if (len > SIZE_MAX - pos || pos + len > buf->wpos) {
+ /* only allow seeking between rpos and wpos */
+ if (ibuf_size(buf) < pos || SIZE_MAX - pos < len ||
+ ibuf_size(buf) < pos + len) {
errno = ERANGE;
return (NULL);
}
- return (buf->buf + pos);
+ return (buf->buf + buf->rpos + pos);
}
int
return (ibuf_set(buf, pos, &value, sizeof(value)));
}
-void *
-ibuf_data(struct ibuf *buf)
+int
+ibuf_set_h16(struct ibuf *buf, size_t pos, uint64_t value)
{
- return (buf->buf);
+ uint16_t v;
+
+ if (value > UINT16_MAX) {
+ errno = EINVAL;
+ return (-1);
+ }
+ v = value;
+ return (ibuf_set(buf, pos, &v, sizeof(v)));
}
+int
+ibuf_set_h32(struct ibuf *buf, size_t pos, uint64_t value)
+{
+ uint32_t v;
+
+ if (value > UINT32_MAX) {
+ errno = EINVAL;
+ return (-1);
+ }
+ v = value;
+ return (ibuf_set(buf, pos, &v, sizeof(v)));
+}
+
+int
+ibuf_set_h64(struct ibuf *buf, size_t pos, uint64_t value)
+{
+ return (ibuf_set(buf, pos, &value, sizeof(value)));
+}
+
+void *
+ibuf_data(const struct ibuf *buf)
+{
+ return (buf->buf + buf->rpos);
+}
+
size_t
-ibuf_size(struct ibuf *buf)
+ibuf_size(const struct ibuf *buf)
{
- return (buf->wpos);
+ return (buf->wpos - buf->rpos);
}
size_t
-ibuf_left(struct ibuf *buf)
+ibuf_left(const struct ibuf *buf)
{
+ if (buf->max == 0)
+ return (0);
return (buf->max - buf->wpos);
}
+int
+ibuf_truncate(struct ibuf *buf, size_t len)
+{
+ if (ibuf_size(buf) >= len) {
+ buf->wpos = buf->rpos + len;
+ return (0);
+ }
+ if (buf->max == 0) {
+ /* only allow to truncate down */
+ errno = ERANGE;
+ return (-1);
+ }
+ return ibuf_add_zero(buf, len - ibuf_size(buf));
+}
+
void
+ibuf_rewind(struct ibuf *buf)
+{
+ buf->rpos = 0;
+}
+
+void
ibuf_close(struct msgbuf *msgbuf, struct ibuf *buf)
{
ibuf_enqueue(msgbuf, buf);
+}
+
+void
+ibuf_from_buffer(struct ibuf *buf, void *data, size_t len)
+{
+ memset(buf, 0, sizeof(*buf));
+ buf->buf = data;
+ buf->size = buf->wpos = len;
+ buf->fd = -1;
+}
+
+void
+ibuf_from_ibuf(struct ibuf *buf, const struct ibuf *from)
+{
+ ibuf_from_buffer(buf, ibuf_data(from), ibuf_size(from));
+}
+
+int
+ibuf_get(struct ibuf *buf, void *data, size_t len)
+{
+ if (ibuf_size(buf) < len) {
+ errno = EBADMSG;
+ return (-1);
+ }
+
+ memcpy(data, ibuf_data(buf), len);
+ buf->rpos += len;
+ return (0);
+}
+
+int
+ibuf_get_ibuf(struct ibuf *buf, size_t len, struct ibuf *new)
+{
+ if (ibuf_size(buf) < len) {
+ errno = EBADMSG;
+ return (-1);
+ }
+
+ ibuf_from_buffer(new, ibuf_data(buf), len);
+ buf->rpos += len;
+ return (0);
+}
+
+int
+ibuf_get_n8(struct ibuf *buf, uint8_t *value)
+{
+ return ibuf_get(buf, value, sizeof(*value));
+}
+
+int
+ibuf_get_n16(struct ibuf *buf, uint16_t *value)
+{
+ int rv;
+
+ rv = ibuf_get(buf, value, sizeof(*value));
+ *value = be16toh(*value);
+ return (rv);
+}
+
+int
+ibuf_get_n32(struct ibuf *buf, uint32_t *value)
+{
+ int rv;
+
+ rv = ibuf_get(buf, value, sizeof(*value));
+ *value = be32toh(*value);
+ return (rv);
+}
+
+int
+ibuf_get_n64(struct ibuf *buf, uint64_t *value)
+{
+ int rv;
+
+ rv = ibuf_get(buf, value, sizeof(*value));
+ *value = be64toh(*value);
+ return (rv);
+}
+
+int
+ibuf_get_h16(struct ibuf *buf, uint16_t *value)
+{
+ return ibuf_get(buf, value, sizeof(*value));
}
+int
+ibuf_get_h32(struct ibuf *buf, uint32_t *value)
+{
+ return ibuf_get(buf, value, sizeof(*value));
+}
+
+int
+ibuf_get_h64(struct ibuf *buf, uint64_t *value)
+{
+ return ibuf_get(buf, value, sizeof(*value));
+}
+
+int
+ibuf_skip(struct ibuf *buf, size_t len)
+{
+ if (ibuf_size(buf) < len) {
+ errno = EBADMSG;
+ return (-1);
+ }
+
+ buf->rpos += len;
+ return (0);
+}
+
void
ibuf_free(struct ibuf *buf)
{
if (buf == NULL)
return;
-#ifdef NOTYET
+ if (buf->max == 0) /* if buf lives on the stack */
+ abort(); /* abort before causing more harm */
if (buf->fd != -1)
close(buf->fd);
-#endif
freezero(buf->buf, buf->size);
free(buf);
}
int fd;
fd = buf->fd;
-#ifdef NOTYET
buf->fd = -1;
-#endif
return (fd);
}
void
ibuf_fd_set(struct ibuf *buf, int fd)
{
+ if (buf->max == 0) /* if buf lives on the stack */
+ abort(); /* abort before causing more harm */
if (buf->fd != -1)
close(buf->fd);
buf->fd = fd;
TAILQ_FOREACH(buf, &msgbuf->bufs, entry) {
if (i >= IOV_MAX)
break;
- iov[i].iov_base = buf->buf + buf->rpos;
- iov[i].iov_len = buf->wpos - buf->rpos;
+ iov[i].iov_base = ibuf_data(buf);
+ iov[i].iov_len = ibuf_size(buf);
i++;
}
for (buf = TAILQ_FIRST(&msgbuf->bufs); buf != NULL && n > 0;
buf = next) {
next = TAILQ_NEXT(buf, entry);
- if (n >= buf->wpos - buf->rpos) {
- n -= buf->wpos - buf->rpos;
+ if (n >= ibuf_size(buf)) {
+ n -= ibuf_size(buf);
ibuf_dequeue(msgbuf, buf);
} else {
buf->rpos += n;
break;
if (i > 0 && buf->fd != -1)
break;
- iov[i].iov_base = buf->buf + buf->rpos;
- iov[i].iov_len = buf->wpos - buf->rpos;
+ iov[i].iov_base = ibuf_data(buf);
+ iov[i].iov_len = ibuf_size(buf);
i++;
if (buf->fd != -1)
buf0 = buf;
return (1);
}
+uint32_t
+msgbuf_queuelen(struct msgbuf *msgbuf)
+{
+ return (msgbuf->queued);
+}
+
static void
ibuf_enqueue(struct msgbuf *msgbuf, struct ibuf *buf)
{
+ if (buf->max == 0) /* if buf lives on the stack */
+ abort(); /* abort before causing more harm */
TAILQ_INSERT_TAIL(&msgbuf->bufs, buf, entry);
msgbuf->queued++;
}
ibuf_dequeue(struct msgbuf *msgbuf, struct ibuf *buf)
{
TAILQ_REMOVE(&msgbuf->bufs, buf, entry);
-
- if (buf->fd != -1) {
- close(buf->fd);
- buf->fd = -1;
- }
-
msgbuf->queued--;
ibuf_free(buf);
}
/* imsg.c */
+struct imsg_fd {
+ TAILQ_ENTRY(imsg_fd) entry;
+ int fd;
+};
+
int imsg_fd_overhead = 0;
-static int imsg_get_fd(struct imsgbuf *);
+static int imsg_dequeue_fd(struct imsgbuf *);
void
-imsg_init(struct imsgbuf *ibuf, int fd)
+imsg_init(struct imsgbuf *imsgbuf, int fd)
{
- msgbuf_init(&ibuf->w);
- memset(&ibuf->r, 0, sizeof(ibuf->r));
- ibuf->fd = fd;
- ibuf->w.fd = fd;
- ibuf->pid = getpid();
- TAILQ_INIT(&ibuf->fds);
+ msgbuf_init(&imsgbuf->w);
+ memset(&imsgbuf->r, 0, sizeof(imsgbuf->r));
+ imsgbuf->fd = fd;
+ imsgbuf->w.fd = fd;
+ imsgbuf->pid = getpid();
+ TAILQ_INIT(&imsgbuf->fds);
}
ssize_t
-imsg_read(struct imsgbuf *ibuf)
+imsg_read(struct imsgbuf *imsgbuf)
{
struct msghdr msg;
struct cmsghdr *cmsg;
memset(&msg, 0, sizeof(msg));
memset(&cmsgbuf, 0, sizeof(cmsgbuf));
- iov.iov_base = ibuf->r.buf + ibuf->r.wpos;
- iov.iov_len = sizeof(ibuf->r.buf) - ibuf->r.wpos;
+ iov.iov_base = imsgbuf->r.buf + imsgbuf->r.wpos;
+ iov.iov_len = sizeof(imsgbuf->r.buf) - imsgbuf->r.wpos;
msg.msg_iov = &iov;
msg.msg_iovlen = 1;
msg.msg_control = &cmsgbuf.buf;
return (-1);
}
- if ((n = recvmsg(ibuf->fd, &msg, 0)) == -1) {
+ if ((n = recvmsg(imsgbuf->fd, &msg, 0)) == -1) {
if (errno == EINTR)
goto again;
goto fail;
}
- ibuf->r.wpos += n;
+ imsgbuf->r.wpos += n;
for (cmsg = CMSG_FIRSTHDR(&msg); cmsg != NULL;
cmsg = CMSG_NXTHDR(&msg, cmsg)) {
fd = ((int *)CMSG_DATA(cmsg))[i];
if (ifd != NULL) {
ifd->fd = fd;
- TAILQ_INSERT_TAIL(&ibuf->fds, ifd,
+ TAILQ_INSERT_TAIL(&imsgbuf->fds, ifd,
entry);
ifd = NULL;
} else
}
ssize_t
-imsg_get(struct imsgbuf *ibuf, struct imsg *imsg)
+imsg_get(struct imsgbuf *imsgbuf, struct imsg *imsg)
{
+ struct imsg m;
size_t av, left, datalen;
- av = ibuf->r.wpos;
+ av = imsgbuf->r.wpos;
if (IMSG_HEADER_SIZE > av)
return (0);
- memcpy(&imsg->hdr, ibuf->r.buf, sizeof(imsg->hdr));
- if (imsg->hdr.len < IMSG_HEADER_SIZE ||
- imsg->hdr.len > MAX_IMSGSIZE) {
+ memcpy(&m.hdr, imsgbuf->r.buf, sizeof(m.hdr));
+ if (m.hdr.len < IMSG_HEADER_SIZE ||
+ m.hdr.len > MAX_IMSGSIZE) {
errno = ERANGE;
return (-1);
}
- if (imsg->hdr.len > av)
+ if (m.hdr.len > av)
return (0);
- datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
- ibuf->r.rptr = ibuf->r.buf + IMSG_HEADER_SIZE;
- if (datalen == 0)
- imsg->data = NULL;
- else if ((imsg->data = malloc(datalen)) == NULL)
- return (-1);
- if (imsg->hdr.flags & IMSGF_HASFD)
- imsg->fd = imsg_get_fd(ibuf);
- else
- imsg->fd = -1;
+ m.fd = -1;
+ m.buf = NULL;
+ m.data = NULL;
- if (datalen != 0)
- memcpy(imsg->data, ibuf->r.rptr, datalen);
+ datalen = m.hdr.len - IMSG_HEADER_SIZE;
+ imsgbuf->r.rptr = imsgbuf->r.buf + IMSG_HEADER_SIZE;
+ if (datalen != 0) {
+ if ((m.buf = ibuf_open(datalen)) == NULL)
+ return (-1);
+ if (ibuf_add(m.buf, imsgbuf->r.rptr, datalen) == -1) {
+ /* this should never fail */
+ ibuf_free(m.buf);
+ return (-1);
+ }
+ m.data = ibuf_data(m.buf);
+ }
- if (imsg->hdr.len < av) {
- left = av - imsg->hdr.len;
- memmove(&ibuf->r.buf, ibuf->r.buf + imsg->hdr.len, left);
- ibuf->r.wpos = left;
+ if (m.hdr.flags & IMSGF_HASFD)
+ m.fd = imsg_dequeue_fd(imsgbuf);
+
+ if (m.hdr.len < av) {
+ left = av - m.hdr.len;
+ memmove(&imsgbuf->r.buf, imsgbuf->r.buf + m.hdr.len, left);
+ imsgbuf->r.wpos = left;
} else
- ibuf->r.wpos = 0;
+ imsgbuf->r.wpos = 0;
+ *imsg = m;
return (datalen + IMSG_HEADER_SIZE);
}
int
-imsg_compose(struct imsgbuf *ibuf, uint32_t type, uint32_t peerid, pid_t pid,
- int fd, const void *data, uint16_t datalen)
+imsg_get_ibuf(struct imsg *imsg, struct ibuf *ibuf)
+{
+ if (imsg->buf == NULL) {
+ errno = EBADMSG;
+ return (-1);
+ }
+ return ibuf_get_ibuf(imsg->buf, ibuf_size(imsg->buf), ibuf);
+}
+
+int
+imsg_get_data(struct imsg *imsg, void *data, size_t len)
+{
+ if (len == 0) {
+ errno = EINVAL;
+ return (-1);
+ }
+ if (imsg->buf == NULL || ibuf_size(imsg->buf) != len) {
+ errno = EBADMSG;
+ return (-1);
+ }
+ return ibuf_get(imsg->buf, data, len);
+}
+
+int
+imsg_get_fd(struct imsg *imsg)
+{
+ int fd = imsg->fd;
+
+ imsg->fd = -1;
+ return fd;
+}
+
+uint32_t
+imsg_get_id(struct imsg *imsg)
+{
+ return (imsg->hdr.peerid);
+}
+
+size_t
+imsg_get_len(struct imsg *imsg)
+{
+ if (imsg->buf == NULL)
+ return 0;
+ return ibuf_size(imsg->buf);
+}
+
+pid_t
+imsg_get_pid(struct imsg *imsg)
+{
+ return (imsg->hdr.pid);
+}
+
+uint32_t
+imsg_get_type(struct imsg *imsg)
{
+ return (imsg->hdr.type);
+}
+
+int
+imsg_compose(struct imsgbuf *imsgbuf, uint32_t type, uint32_t id, pid_t pid,
+ int fd, const void *data, size_t datalen)
+{
struct ibuf *wbuf;
- if ((wbuf = imsg_create(ibuf, type, peerid, pid, datalen)) == NULL)
+ if ((wbuf = imsg_create(imsgbuf, type, id, pid, datalen)) == NULL)
return (-1);
if (imsg_add(wbuf, data, datalen) == -1)
return (-1);
ibuf_fd_set(wbuf, fd);
- imsg_close(ibuf, wbuf);
+ imsg_close(imsgbuf, wbuf);
return (1);
}
int
-imsg_composev(struct imsgbuf *ibuf, uint32_t type, uint32_t peerid, pid_t pid,
+imsg_composev(struct imsgbuf *imsgbuf, uint32_t type, uint32_t id, pid_t pid,
int fd, const struct iovec *iov, int iovcnt)
{
struct ibuf *wbuf;
- int i, datalen = 0;
+ int i;
+ size_t datalen = 0;
for (i = 0; i < iovcnt; i++)
datalen += iov[i].iov_len;
- if ((wbuf = imsg_create(ibuf, type, peerid, pid, datalen)) == NULL)
+ if ((wbuf = imsg_create(imsgbuf, type, id, pid, datalen)) == NULL)
return (-1);
for (i = 0; i < iovcnt; i++)
return (-1);
ibuf_fd_set(wbuf, fd);
- imsg_close(ibuf, wbuf);
+ imsg_close(imsgbuf, wbuf);
return (1);
}
+/*
+ * Enqueue imsg with payload from ibuf buf. fd passing is not possible
+ * with this function.
+ */
int
-imsg_compose_ibuf(struct imsgbuf *ibuf, uint32_t type, uint32_t peerid,
+imsg_compose_ibuf(struct imsgbuf *imsgbuf, uint32_t type, uint32_t id,
pid_t pid, struct ibuf *buf)
{
- struct ibuf *wbuf = NULL;
+ struct ibuf *hdrbuf = NULL;
struct imsg_hdr hdr;
int save_errno;
hdr.type = type;
hdr.len = ibuf_size(buf) + IMSG_HEADER_SIZE;
hdr.flags = 0;
- hdr.peerid = peerid;
+ hdr.peerid = id;
if ((hdr.pid = pid) == 0)
- hdr.pid = ibuf->pid;
+ hdr.pid = imsgbuf->pid;
- if ((wbuf = ibuf_open(IMSG_HEADER_SIZE)) == NULL)
+ if ((hdrbuf = ibuf_open(IMSG_HEADER_SIZE)) == NULL)
goto fail;
- if (imsg_add(wbuf, &hdr, sizeof(hdr)) == -1)
+ if (imsg_add(hdrbuf, &hdr, sizeof(hdr)) == -1)
goto fail;
- ibuf_close(&ibuf->w, wbuf);
- ibuf_close(&ibuf->w, buf);
+ ibuf_close(&imsgbuf->w, hdrbuf);
+ ibuf_close(&imsgbuf->w, buf);
return (1);
fail:
save_errno = errno;
ibuf_free(buf);
- ibuf_free(wbuf);
+ ibuf_free(hdrbuf);
errno = save_errno;
return (-1);
}
+/*
+ * Forward imsg to another channel. Any attached fd is closed.
+ */
+int
+imsg_forward(struct imsgbuf *imsgbuf, struct imsg *msg)
+{
+ struct ibuf *wbuf;
+ size_t len = 0;
+
+ if (msg->fd != -1) {
+ close(msg->fd);
+ msg->fd = -1;
+ }
+
+ if (msg->buf != NULL) {
+ ibuf_rewind(msg->buf);
+ len = ibuf_size(msg->buf);
+ }
+
+ if ((wbuf = imsg_create(imsgbuf, msg->hdr.type, msg->hdr.peerid,
+ msg->hdr.pid, len)) == NULL)
+ return (-1);
+
+ if (msg->buf != NULL) {
+ if (ibuf_add_buf(wbuf, msg->buf) == -1) {
+ ibuf_free(wbuf);
+ return (-1);
+ }
+ }
+
+ imsg_close(imsgbuf, wbuf);
+ return (1);
+}
+
struct ibuf *
-imsg_create(struct imsgbuf *ibuf, uint32_t type, uint32_t peerid, pid_t pid,
- uint16_t datalen)
+imsg_create(struct imsgbuf *imsgbuf, uint32_t type, uint32_t id, pid_t pid,
+ size_t datalen)
{
struct ibuf *wbuf;
struct imsg_hdr hdr;
hdr.type = type;
hdr.flags = 0;
- hdr.peerid = peerid;
+ hdr.peerid = id;
if ((hdr.pid = pid) == 0)
- hdr.pid = ibuf->pid;
+ hdr.pid = imsgbuf->pid;
if ((wbuf = ibuf_dynamic(datalen, MAX_IMSGSIZE)) == NULL) {
return (NULL);
}
}
int
-imsg_add(struct ibuf *msg, const void *data, uint16_t datalen)
+imsg_add(struct ibuf *msg, const void *data, size_t datalen)
{
if (datalen)
if (ibuf_add(msg, data, datalen) == -1) {
}
void
-imsg_close(struct imsgbuf *ibuf, struct ibuf *msg)
+imsg_close(struct imsgbuf *imsgbuf, struct ibuf *msg)
{
struct imsg_hdr *hdr;
hdr->flags |= IMSGF_HASFD;
hdr->len = ibuf_size(msg);
- ibuf_close(&ibuf->w, msg);
+ ibuf_close(&imsgbuf->w, msg);
}
void
imsg_free(struct imsg *imsg)
{
- freezero(imsg->data, imsg->hdr.len - IMSG_HEADER_SIZE);
+ ibuf_free(imsg->buf);
}
static int
-imsg_get_fd(struct imsgbuf *ibuf)
+imsg_dequeue_fd(struct imsgbuf *imsgbuf)
{
int fd;
struct imsg_fd *ifd;
- if ((ifd = TAILQ_FIRST(&ibuf->fds)) == NULL)
+ if ((ifd = TAILQ_FIRST(&imsgbuf->fds)) == NULL)
return (-1);
fd = ifd->fd;
- TAILQ_REMOVE(&ibuf->fds, ifd, entry);
+ TAILQ_REMOVE(&imsgbuf->fds, ifd, entry);
free(ifd);
return (fd);
}
int
-imsg_flush(struct imsgbuf *ibuf)
+imsg_flush(struct imsgbuf *imsgbuf)
{
- while (ibuf->w.queued)
- if (msgbuf_write(&ibuf->w) <= 0)
+ while (imsgbuf->w.queued)
+ if (msgbuf_write(&imsgbuf->w) <= 0)
return (-1);
return (0);
}
void
-imsg_clear(struct imsgbuf *ibuf)
+imsg_clear(struct imsgbuf *imsgbuf)
{
int fd;
- msgbuf_clear(&ibuf->w);
- while ((fd = imsg_get_fd(ibuf)) != -1)
+ msgbuf_clear(&imsgbuf->w);
+ while ((fd = imsg_dequeue_fd(imsgbuf)) != -1)
close(fd);
}
#endif /* HAVE_LIB_IMSG */
blob - fb516e30287318ec10ccdddc451e5d8658db0a12
blob + dd47b1889da577ce63769035f0e4bd0b1d8a7c32
--- imsg.h
+++ imsg.h
-/* $OpenBSD: imsg.h,v 1.7 2023/06/19 17:19:50 claudio Exp $ */
+/* $OpenBSD: imsg.h,v 1.8 2023/12/12 15:47:41 claudio Exp $ */
/*
+ * Copyright (c) 2023 Claudio Jeker <claudio@openbsd.org>
* Copyright (c) 2006, 2007 Pierre-Yves Ritschard <pyr@openbsd.org>
* Copyright (c) 2006, 2007, 2008 Reyk Floeter <reyk@openbsd.org>
* Copyright (c) 2003, 2004 Henning Brauer <henning@openbsd.org>
#ifndef _IMSG_H_
#define _IMSG_H_
-#include <stdint.h>
+#include <sys/types.h>
#define IBUF_READ_SIZE 65535
#define IMSG_HEADER_SIZE sizeof(struct imsg_hdr)
size_t wpos;
};
-struct imsg_fd {
- TAILQ_ENTRY(imsg_fd) entry;
- int fd;
-};
-
+struct imsg_fd;
struct imsgbuf {
TAILQ_HEAD(, imsg_fd) fds;
struct ibuf_read r;
struct imsg_hdr hdr;
int fd;
void *data;
+ struct ibuf *buf;
};
struct iovec;
struct ibuf *ibuf_dynamic(size_t, size_t);
int ibuf_add(struct ibuf *, const void *, size_t);
int ibuf_add_buf(struct ibuf *, const struct ibuf *);
+int ibuf_add_ibuf(struct ibuf *, const struct ibuf *);
int ibuf_add_zero(struct ibuf *, size_t);
int ibuf_add_n8(struct ibuf *, uint64_t);
int ibuf_add_n16(struct ibuf *, uint64_t);
int ibuf_add_n32(struct ibuf *, uint64_t);
int ibuf_add_n64(struct ibuf *, uint64_t);
+int ibuf_add_h16(struct ibuf *, uint64_t);
+int ibuf_add_h32(struct ibuf *, uint64_t);
+int ibuf_add_h64(struct ibuf *, uint64_t);
void *ibuf_reserve(struct ibuf *, size_t);
void *ibuf_seek(struct ibuf *, size_t, size_t);
int ibuf_set(struct ibuf *, size_t, const void *, size_t);
int ibuf_set_n16(struct ibuf *, size_t, uint64_t);
int ibuf_set_n32(struct ibuf *, size_t, uint64_t);
int ibuf_set_n64(struct ibuf *, size_t, uint64_t);
-void *ibuf_data(struct ibuf *);
-size_t ibuf_size(struct ibuf *);
-size_t ibuf_left(struct ibuf *);
+int ibuf_set_h16(struct ibuf *, size_t, uint64_t);
+int ibuf_set_h32(struct ibuf *, size_t, uint64_t);
+int ibuf_set_h64(struct ibuf *, size_t, uint64_t);
+void *ibuf_data(const struct ibuf *);
+size_t ibuf_size(const struct ibuf *);
+size_t ibuf_left(const struct ibuf *);
+int ibuf_truncate(struct ibuf *, size_t);
+void ibuf_rewind(struct ibuf *);
void ibuf_close(struct msgbuf *, struct ibuf *);
+void ibuf_from_buffer(struct ibuf *, void *, size_t);
+void ibuf_from_ibuf(struct ibuf *, const struct ibuf *);
+int ibuf_get(struct ibuf *, void *, size_t);
+int ibuf_get_ibuf(struct ibuf *, size_t, struct ibuf *);
+int ibuf_get_n8(struct ibuf *, uint8_t *);
+int ibuf_get_n16(struct ibuf *, uint16_t *);
+int ibuf_get_n32(struct ibuf *, uint32_t *);
+int ibuf_get_n64(struct ibuf *, uint64_t *);
+int ibuf_get_h16(struct ibuf *, uint16_t *);
+int ibuf_get_h32(struct ibuf *, uint32_t *);
+int ibuf_get_h64(struct ibuf *, uint64_t *);
+int ibuf_skip(struct ibuf *, size_t);
void ibuf_free(struct ibuf *);
int ibuf_fd_avail(struct ibuf *);
int ibuf_fd_get(struct ibuf *);
int ibuf_write(struct msgbuf *);
void msgbuf_init(struct msgbuf *);
void msgbuf_clear(struct msgbuf *);
+uint32_t msgbuf_queuelen(struct msgbuf *);
int msgbuf_write(struct msgbuf *);
/* imsg.c */
void imsg_init(struct imsgbuf *, int);
ssize_t imsg_read(struct imsgbuf *);
ssize_t imsg_get(struct imsgbuf *, struct imsg *);
+int imsg_get_ibuf(struct imsg *, struct ibuf *);
+int imsg_get_data(struct imsg *, void *, size_t);
+int imsg_get_fd(struct imsg *);
+uint32_t imsg_get_id(struct imsg *);
+size_t imsg_get_len(struct imsg *);
+pid_t imsg_get_pid(struct imsg *);
+uint32_t imsg_get_type(struct imsg *);
+int imsg_forward(struct imsgbuf *, struct imsg *);
int imsg_compose(struct imsgbuf *, uint32_t, uint32_t, pid_t, int,
- const void *, uint16_t);
+ const void *, size_t);
int imsg_composev(struct imsgbuf *, uint32_t, uint32_t, pid_t, int,
const struct iovec *, int);
int imsg_compose_ibuf(struct imsgbuf *, uint32_t, uint32_t, pid_t,
struct ibuf *);
-struct ibuf *imsg_create(struct imsgbuf *, uint32_t, uint32_t, pid_t, uint16_t);
-int imsg_add(struct ibuf *, const void *, uint16_t);
+struct ibuf *imsg_create(struct imsgbuf *, uint32_t, uint32_t, pid_t, size_t);
+int imsg_add(struct ibuf *, const void *, size_t);
void imsg_close(struct imsgbuf *, struct ibuf *);
void imsg_free(struct imsg *);
int imsg_flush(struct imsgbuf *);
