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62 lines
2.0 KiB
C
62 lines
2.0 KiB
C
#ifndef __res_state_defined
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#define __res_state_defined 1
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#include <sys/types.h>
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#include <netinet/in.h>
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/* res_state: the global state used by the resolver stub. */
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#define MAXNS 3 /* max # name servers we'll track */
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#define MAXDFLSRCH 3 /* # default domain levels to try */
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#define MAXDNSRCH 6 /* max # domains in search path */
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#define MAXRESOLVSORT 10 /* number of net to sort on */
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struct __res_state {
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int retrans; /* retransmission time interval */
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int retry; /* number of times to retransmit */
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unsigned long options; /* option flags - see below. */
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int nscount; /* number of name servers */
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struct sockaddr_in
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nsaddr_list[MAXNS]; /* address of name server */
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unsigned short id; /* current message id */
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/* 2 byte hole here. */
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char *dnsrch[MAXDNSRCH+1]; /* components of domain to search */
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char defdname[256]; /* default domain (deprecated) */
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unsigned long pfcode; /* RES_PRF_ flags - see below. */
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unsigned ndots:4; /* threshold for initial abs. query */
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unsigned nsort:4; /* number of elements in sort_list[] */
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unsigned ipv6_unavail:1; /* connecting to IPv6 server failed */
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unsigned unused:23;
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struct {
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struct in_addr addr;
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uint32_t mask;
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} sort_list[MAXRESOLVSORT];
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/* 4 byte hole here on 64-bit architectures. */
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void * __glibc_unused_qhook;
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void * __glibc_unused_rhook;
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int res_h_errno; /* last one set for this context */
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int _vcsock; /* PRIVATE: for res_send VC i/o */
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unsigned int _flags; /* PRIVATE: see below */
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/* 4 byte hole here on 64-bit architectures. */
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union {
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char pad[52]; /* On an i386 this means 512b total. */
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struct {
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uint16_t nscount;
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uint16_t nsmap[MAXNS];
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int nssocks[MAXNS];
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uint16_t nscount6;
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uint16_t nsinit;
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struct sockaddr_in6 *nsaddrs[MAXNS];
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#ifdef _LIBC
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unsigned long long int __glibc_extension_index
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__attribute__((packed));
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#else
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unsigned int __glibc_reserved[2];
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#endif
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} _ext;
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} _u;
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};
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typedef struct __res_state *res_state;
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#endif /* __res_state_defined */
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