open the protocol name database file
#include <netdb.h> void setprotoent( int stayopen );
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().
POSIX 1003.1g (draft)
| Safety: | |
|---|---|
| Interrupt handler | No |
| Signal handler | No |
| Thread | No |
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.
endprotoent(), getprotobyname(), getprotobynumber(), getprotoent(), protoent, setprotoent()
/etc/protocols in the TCP/IP User's Guide