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netdb.h
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netdb.h
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#ifndef _NETDB_H
#define _NETDB_H
#ifdef __cplusplus
extern "C" {
#endif
#include <features.h>
#include <netinet/in.h>
#if defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
#define __NEED_size_t
#include <bits/alltypes.h>
#endif
struct addrinfo {
int ai_flags;
int ai_family;
int ai_socktype;
int ai_protocol;
socklen_t ai_addrlen;
struct sockaddr *ai_addr;
char *ai_canonname;
struct addrinfo *ai_next;
};
#define AI_PASSIVE 0x01
#define AI_CANONNAME 0x02
#define AI_NUMERICHOST 0x04
#define AI_V4MAPPED 0x08
#define AI_ALL 0x10
#define AI_ADDRCONFIG 0x20
#define AI_NUMERICSERV 0x400
#define NI_NUMERICHOST 0x01
#define NI_NUMERICSERV 0x02
#define NI_NOFQDN 0x04
#define NI_NAMEREQD 0x08
#define NI_DGRAM 0x10
#define NI_NUMERICSCOPE 0x100
#define EAI_BADFLAGS -1
#define EAI_NONAME -2
#define EAI_AGAIN -3
#define EAI_FAIL -4
#define EAI_FAMILY -6
#define EAI_SOCKTYPE -7
#define EAI_SERVICE -8
#define EAI_MEMORY -10
#define EAI_SYSTEM -11
#define EAI_OVERFLOW -12
int getaddrinfo (const char *__restrict, const char *__restrict, const struct addrinfo *__restrict, struct addrinfo **__restrict);
void freeaddrinfo (struct addrinfo *);
int getnameinfo (const struct sockaddr *__restrict, socklen_t, char *__restrict, socklen_t, char *__restrict, socklen_t, int);
const char *gai_strerror(int);
/* Legacy functions follow (marked OBsolete in SUS) */
struct netent {
char *n_name;
char **n_aliases;
int n_addrtype;
uint32_t n_net;
};
struct hostent {
char *h_name;
char **h_aliases;
int h_addrtype;
int h_length;
char **h_addr_list;
};
#define h_addr h_addr_list[0]
struct servent {
char *s_name;
char **s_aliases;
int s_port;
char *s_proto;
};
struct protoent {
char *p_name;
char **p_aliases;
int p_proto;
};
void sethostent (int);
void endhostent (void);
struct hostent *gethostent (void);
void setnetent (int);
void endnetent (void);
struct netent *getnetent (void);
struct netent *getnetbyaddr (uint32_t, int);
struct netent *getnetbyname (const char *);
void setservent (int);
void endservent (void);
struct servent *getservent (void);
struct servent *getservbyname (const char *, const char *);
struct servent *getservbyport (int, const char *);
void setprotoent (int);
void endprotoent (void);
struct protoent *getprotoent (void);
struct protoent *getprotobyname (const char *);
struct protoent *getprotobynumber (int);
#if defined(_GNU_SOURCE) || defined(_BSD_SOURCE) || defined(_POSIX_SOURCE) \
|| (defined(_POSIX_C_SOURCE) && _POSIX_C_SOURCE+0 < 200809L) \
|| (defined(_XOPEN_SOURCE) && _XOPEN_SOURCE+0 < 700)
struct hostent *gethostbyname (const char *);
struct hostent *gethostbyaddr (const void *, socklen_t, int);
#ifdef __GNUC__
__attribute__((const))
#endif
#ifdef __wasilibc_unmodified_upstream
int *__h_errno_location(void);
#define h_errno (*__h_errno_location())
#elif (defined __wasilibc_use_wasip2)
extern _Thread_local int h_errno;
#define h_errno h_errno
#endif
#define HOST_NOT_FOUND 1
#define TRY_AGAIN 2
#define NO_RECOVERY 3
#define NO_DATA 4
#define NO_ADDRESS NO_DATA
#endif
#if defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
void herror(const char *);
const char *hstrerror(int);
int gethostbyname_r(const char *, struct hostent *, char *, size_t, struct hostent **, int *);
int gethostbyname2_r(const char *, int, struct hostent *, char *, size_t, struct hostent **, int *);
struct hostent *gethostbyname2(const char *, int);
int gethostbyaddr_r(const void *, socklen_t, int, struct hostent *, char *, size_t, struct hostent **, int *);
int getservbyport_r(int, const char *, struct servent *, char *, size_t, struct servent **);
int getservbyname_r(const char *, const char *, struct servent *, char *, size_t, struct servent **);
#define EAI_NODATA -5
#define EAI_ADDRFAMILY -9
#define EAI_INPROGRESS -100
#define EAI_CANCELED -101
#define EAI_NOTCANCELED -102
#define EAI_ALLDONE -103
#define EAI_INTR -104
#define EAI_IDN_ENCODE -105
#define NI_MAXHOST 255
#define NI_MAXSERV 32
#endif
#ifdef __cplusplus
}
#endif
#endif