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Read the next line of the protocol name database file
#include <netdb.h>
struct protoent * getprotoent( void );
libsocket
Use the -l socket option to
qcc
to link against this library.
The getprotoent() function reads the next line of the
protocol name database file, opening the file if necessary. It returns a
pointer to a structure of type
protoent, which
contains the broken-out fields of a line in the network
protocol database, /etc/protocols.
A pointer to a valid protoent structure, or NULL if an error occurs.
- /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, copy
it before any subsequent calls overwrite it.
Currently, only the Internet protocols are understood.
endprotoent(),
getprotobyname(),
getprotobynumber(),
protoent,
setprotoent()
/etc/protocols
in the Utilities Reference
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