What is the data-type of pcap?

[Tony Gahlinger]

In reading up on raw socket programming under RedHat 9.2,
I come across 'typedef struct pcap pcap_t' in pcap.h.
Ok, so pcap_t is of type pcap, but I can't find any
include file that tells me what pcap is itself. Ideas,
anyone?

--Tony

[Johan Lindh]

Tony Gahlinger wrote:

In reading up on raw socket programming under RedHat 9.2,
I come across 'typedef struct pcap pcap_t' in pcap.h.
Ok, so pcap_t is of type pcap, but I can't find any
include file that tells me what pcap is itself. Ideas,
anyone?

--Tony

There's no requirement that struct pcap be defined, as long as there is
no attempt to use it's members or take it's size. If you need to find
out what it contains, try asking in a RedHat or Linux forum.

[Ben Pfaff]

Tony Gahlinger <tg******@ieeeREMOVECAPS.org> writes:

In reading up on raw socket programming under RedHat 9.2,
I come across 'typedef struct pcap pcap_t' in pcap.h.
Ok, so pcap_t is of type pcap, but I can't find any
include file that tells me what pcap is itself. Ideas,
anyone?

Quite possibly you're not supposed to know. `struct pcap' might
be defined only in the implementation of pcap, with its contents
supposed to be opaque to users.
--
Go not to Usenet for counsel, for they will say both no and yes.

[Default User]

Tony Gahlinger wrote:

In reading up on raw socket programming under RedHat 9.2,
I come across 'typedef struct pcap pcap_t' in pcap.h.
Ok, so pcap_t is of type pcap, but I can't find any
include file that tells me what pcap is itself. Ideas,
anyone?

Your post is off-topic for comp.lang.c. Likely a linux newsgroup would
suit you. If pcap is a POSIX entity (and I don't recognize it at such)
then comp.unix.programmer would be useful.

Please visit:

http://www.csclub.uwaterloo.ca/u/dj3...lc-welcome.txt
http://www.eskimo.com/~scs/C-faq/top.html
http://benpfaff.org/writings/clc/off-topic.html

for posting guidelines and frequently asked questions. Thank you.

Brian Rodenborn

[Martin Dickopp]

Tony Gahlinger <tg******@ieeeREMOVECAPS.org> writes:

I come across 'typedef struct pcap pcap_t' in pcap.h.
Ok, so pcap_t is of type pcap,

No, `pcap_t' is of type `struct pcap'.

Martin

[Alex]

"Martin Dickopp" <ex****************@zero-based.org> wrote in message
news:bu*************@news.t-online.com...

Tony Gahlinger <tg******@ieeeREMOVECAPS.org> writes:

I come across 'typedef struct pcap pcap_t' in pcap.h.
Ok, so pcap_t is of type pcap,

No, `pcap_t' is of type `struct pcap'.

No, 'pcap_t' is an alias for the type 'struct pcap'.