setprotoent()

Open the protocol name database file

Synopsis:

#include <netdb.h>

void setprotoent( int stayopen );

Library:

libsocket

Description:

The setprotoent() function opens and rewinds the protocol name database file. If the stayopen flag is nonzero, the protocol name database won't be closed after each call to getprotobyname() or getprotobynumber().

Files:

/etc/protocols: Protocol name database file.

Classification:

Standard Unix, POSIX 1003.1-2001

Safety:
Cancellation point	Yes
Interrupt handler	No
Signal handler	No
Thread	No

Caveats:

This function uses static data; if the data is needed for future use, it should be copied before any subsequent calls overwrite it.

Currently, only the Internet protocols are understood.

See also:

endprotoent(), getprotobyname(), getprotobynumber(), getprotoent(), protoent

/etc/protocols in the Utilities Reference