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Open the protocol name database file
#include <netdb.h>
void setprotoent( int stayopen );
- stayopen
- Nonzero if you don't want the database to be closed after each
call to
getprotobyname()
or
getprotobynumber().
libsocket
Use the -l socket option to
qcc
to link against this library.
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().
- /etc/protocols
- Protocol name database file.
POSIX 1003.1
Safety: | |
Cancellation point |
Yes |
Interrupt handler |
No |
Signal handler |
No |
Thread |
No |
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.
endprotoent(),
getprotobyname(),
getprotobynumber(),
getprotoent(),
protoent
/etc/protocols
in the Utilities Reference
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