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Get a service entry, given a name
#include <netdb.h>
struct servent * getservbyname( const char * name,
const char * proto );
- name
- The name of the service whose entry you want to find.
- proto
- NULL, or the protocol for the service.
libsocket
Use the -l socket option to
qcc
to link against this library.
The getservbyname() function gets the entry for the given
name and protocol from the network services database,
/etc/services.
This function returns a pointer of type
servent, which contains
the broken-out fields of a line in the network services database.
The
setservent()
function opens and rewinds the file.
If you pass a nonzero stayopen argument to setservent(),
the services database isn't closed after each call to
getservbyname() or
getservbyport().
The getservbyname() and getservbyport()
functions sequentially search
from the beginning of the file until a matching protocol
name or port number is found, or until EOF is encountered.
If a protocol name is also supplied (non-NULL), searches
must also match the protocol.
A valid pointer to a servent structure, or
NULL if an error occurs.
- /etc/services
- Network services 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.
endservent(),
getprotoent(),
getservbyport(),
getservent(),
servent,
setservent()
/etc/services
in the Utilities Reference
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