diff options
| author | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2012-04-27 15:32:39 +0200 |
|---|---|---|
| committer | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2012-04-27 15:32:39 +0200 |
| commit | 980e2112cf7a987df40b3157a417ad0e3a831476 (patch) | |
| tree | e447c8095073e225102360ccbfce8a42eda83f4d /libpipe/pq.h | |
| parent | 69bd9b1d600debf7b758cc7f8353b747430259b4 (diff) | |
Add MSG_PEEK support to pflocal
* libpipe/pq.h (packet_peek): Declare new function.
* libpipe/pq.c (packet_read): Move code to new `packet_fetch' function, call it
with `remove' set to 1.
(packet_fetch): New function with code from `packet_read', but do not remove
data if `remove' is 0.
(packet_peek): New function, calls `packet_fetch' with `remove' set to 0.
* libpipe/dgram.c (dgram_read): When MSG_PEEK is in *flags, do not dequeue
and only peek data.
* libpipe/seqpack.c (seqpack_read): Likewise.
* libpipe/stream.c (stream_read): Likewise.
* pflocal/socket.c (S_socket_recv): Pass MSG_PEEK flag to libpipe.
Diffstat (limited to 'libpipe/pq.h')
| -rw-r--r-- | libpipe/pq.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/libpipe/pq.h b/libpipe/pq.h index 0fffe254..4e500b6c 100644 --- a/libpipe/pq.h +++ b/libpipe/pq.h @@ -98,6 +98,13 @@ error_t packet_write (struct packet *packet, error_t packet_read (struct packet *packet, char **data, size_t *data_len, size_t amount); +/* Peek up to AMOUNT bytes from the beginning of the data in PACKET, and + puts it into *DATA, and the amount read into DATA_LEN. If more than the + original *DATA_LEN bytes are available, new memory is vm_allocated, and + the address and length of this array put into DATA and DATA_LEN. */ +error_t packet_peek (struct packet *packet, + char **data, size_t *data_len, size_t amount); + /* Returns any ports in PACKET in PORTS and NUM_PORTS, and removes them from PACKET. */ error_t packet_read_ports (struct packet *packet, |