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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-24 04:52:22 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-24 04:52:22 +0000 |
commit | 3d08cd331c1adcf0d917392f7e527b3f00511748 (patch) | |
tree | 312f0d1e1632f48862f044b8bb87e602dcffb5f9 /man3/getipnodebyname.3 | |
parent | Adding debian version 6.7-2. (diff) | |
download | manpages-3d08cd331c1adcf0d917392f7e527b3f00511748.tar.xz manpages-3d08cd331c1adcf0d917392f7e527b3f00511748.zip |
Merging upstream version 6.8.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'man3/getipnodebyname.3')
-rw-r--r-- | man3/getipnodebyname.3 | 253 |
1 files changed, 0 insertions, 253 deletions
diff --git a/man3/getipnodebyname.3 b/man3/getipnodebyname.3 deleted file mode 100644 index 23bb958..0000000 --- a/man3/getipnodebyname.3 +++ /dev/null @@ -1,253 +0,0 @@ -.\" Copyright 2000 Sam Varshavchik <mrsam@courier-mta.com> -.\" -.\" SPDX-License-Identifier: Linux-man-pages-copyleft -.\" -.\" References: RFC 2553 -.TH getipnodebyname 3 2023-10-31 "Linux man-pages 6.7" -.SH NAME -getipnodebyname, getipnodebyaddr, freehostent \- get network -hostnames and addresses -.SH LIBRARY -Standard C library -.RI ( libc ", " \-lc ) -.SH SYNOPSIS -.nf -.B #include <sys/types.h> -.B #include <sys/socket.h> -.B #include <netdb.h> -.P -.BI "[[deprecated]] struct hostent *getipnodebyname(const char *" name ", int " af , -.BI " int " flags ", int *" error_num ); -.BI "[[deprecated]] struct hostent *getipnodebyaddr(const void " addr [. len ], -.BI " size_t " len ", int " af , -.BI " int *" "error_num" ); -.BI "[[deprecated]] void freehostent(struct hostent *" "ip" ); -.fi -.SH DESCRIPTION -These functions are deprecated (and unavailable in glibc). -Use -.BR getaddrinfo (3) -and -.BR getnameinfo (3) -instead. -.P -The -.BR getipnodebyname () -and -.BR getipnodebyaddr () -functions return the names and addresses of a network host. -These functions return a pointer to the -following structure: -.P -.in +4n -.EX -struct hostent { - char *h_name; - char **h_aliases; - int h_addrtype; - int h_length; - char **h_addr_list; -}; -.EE -.in -.P -These functions replace the -.BR gethostbyname (3) -and -.BR gethostbyaddr (3) -functions, which could access only the IPv4 network address family. -The -.BR getipnodebyname () -and -.BR getipnodebyaddr () -functions can access multiple network address families. -.P -Unlike the -.B gethostby -functions, -these functions return pointers to dynamically allocated memory. -The -.BR freehostent () -function is used to release the dynamically allocated memory -after the caller no longer needs the -.I hostent -structure. -.SS getipnodebyname() arguments -The -.BR getipnodebyname () -function -looks up network addresses for the host -specified by the -.I name -argument. -The -.I af -argument specifies one of the following values: -.TP -.B AF_INET -The -.I name -argument points to a dotted-quad IPv4 address or a name -of an IPv4 network host. -.TP -.B AF_INET6 -The -.I name -argument points to a hexadecimal IPv6 address or a name -of an IPv6 network host. -.P -The -.I flags -argument specifies additional options. -More than one option can be specified by bitwise OR-ing -them together. -.I flags -should be set to 0 -if no options are desired. -.TP -.B AI_V4MAPPED -This flag is used with -.B AF_INET6 -to request a query for IPv4 addresses instead of -IPv6 addresses; the IPv4 addresses will -be mapped to IPv6 addresses. -.TP -.B AI_ALL -This flag is used with -.B AI_V4MAPPED -to request a query for both IPv4 and IPv6 addresses. -Any IPv4 address found will be mapped to an IPv6 address. -.TP -.B AI_ADDRCONFIG -This flag is used with -.B AF_INET6 -to -further request that queries for IPv6 addresses should not be made unless -the system has at least one IPv6 address assigned to a network interface, -and that queries for IPv4 addresses should not be made unless the -system has at least one IPv4 address assigned to a network interface. -This flag may be used by itself or with the -.B AI_V4MAPPED -flag. -.TP -.B AI_DEFAULT -This flag is equivalent to -.BR "(AI_ADDRCONFIG | AI_V4MAPPED)" . -.SS getipnodebyaddr() arguments -The -.BR getipnodebyaddr () -function -looks up the name of the host whose -network address is -specified by the -.I addr -argument. -The -.I af -argument specifies one of the following values: -.TP -.B AF_INET -The -.I addr -argument points to a -.I struct in_addr -and -.I len -must be set to -.IR "sizeof(struct in_addr)" . -.TP -.B AF_INET6 -The -.I addr -argument points to a -.I struct in6_addr -and -.I len -must be set to -.IR "sizeof(struct in6_addr)" . -.SH RETURN VALUE -NULL is returned if an error occurred, and -.I error_num -will contain an error code from the following list: -.TP -.B HOST_NOT_FOUND -The hostname or network address was not found. -.TP -.B NO_ADDRESS -The domain name server recognized the network address or name, -but no answer was returned. -This can happen if the network host has only IPv4 addresses and -a request has been made for IPv6 information only, or vice versa. -.TP -.B NO_RECOVERY -The domain name server returned a permanent failure response. -.TP -.B TRY_AGAIN -The domain name server returned a temporary failure response. -You might have better luck next time. -.P -A successful query returns a pointer to a -.I hostent -structure that contains the following fields: -.TP -.I h_name -This is the official name of this network host. -.TP -.I h_aliases -This is an array of pointers to unofficial aliases for the same host. -The array is terminated by a null pointer. -.TP -.I h_addrtype -This is a copy of the -.I af -argument to -.BR getipnodebyname () -or -.BR getipnodebyaddr (). -.I h_addrtype -will always be -.B AF_INET -if the -.I af -argument was -.BR AF_INET . -.I h_addrtype -will always be -.B AF_INET6 -if the -.I af -argument was -.BR AF_INET6 . -.TP -.I h_length -This field will be set to -.I sizeof(struct in_addr) -if -.I h_addrtype -is -.BR AF_INET , -and to -.I sizeof(struct in6_addr) -if -.I h_addrtype -is -.BR AF_INET6 . -.TP -.I h_addr_list -This is an array of one or more pointers to network address structures for the -network host. -The array is terminated by a null pointer. -.SH STANDARDS -None. -.SH HISTORY -.\" Not in POSIX.1-2001. -RFC\ 2553. -.P -Present in glibc 2.1.91-95, but removed again. -Several UNIX-like systems support them, but all -call them deprecated. -.SH SEE ALSO -.BR getaddrinfo (3), -.BR getnameinfo (3), -.BR inet_ntop (3), -.BR inet_pton (3) |