setprotoent()
Open the protocol name database file
Synopsis:
#include <netdb.h>
void setprotoent( int stayopen );
Arguments:
- stayopen
- Nonzero if you don't want the database to be closed after each call to getprotobyname() or getprotobynumber().
Library:
libsocket
Use the -l socket option to qcc to link against this library.
Description:
The setprotoent() function opens and rewinds the protocol name database file. If the stayopen flag is nonzero, the protocol name database isn't closed after each call to getprotobyname() or getprotobynumber().
Files:
- /etc/protocols
- Protocol name database file.
Classification:
| Safety: | |
|---|---|
| Cancellation point | Yes |
| Interrupt handler | No |
| Signal handler | No |
| Thread | No |
Caveats:
This function uses static data; if you need the data for future use, you should copy it before any subsequent calls overwrite it.
Currently, only the Internet protocols are understood.
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