source:
azure_iot_hub_mbedtls/trunk/musl-1.1.18/src/network/gethostbyname2.c@
413
Last change on this file since 413 was 398, checked in by , 5 years ago | |
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File size: 479 bytes |
Rev | Line | |
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[398] | 1 | #define _GNU_SOURCE |
2 | ||
3 | #include <sys/socket.h> | |
4 | #include <netdb.h> | |
5 | #include <errno.h> | |
6 | #include <stdlib.h> | |
7 | ||
8 | struct hostent *gethostbyname2(const char *name, int af) | |
9 | { | |
10 | static struct hostent *h; | |
11 | size_t size = 63; | |
12 | struct hostent *res; | |
13 | int err; | |
14 | do { | |
15 | free(h); | |
16 | h = malloc(size+=size+1); | |
17 | if (!h) { | |
18 | h_errno = NO_RECOVERY; | |
19 | return 0; | |
20 | } | |
21 | err = gethostbyname2_r(name, af, h, | |
22 | (void *)(h+1), size-sizeof *h, &res, &h_errno); | |
23 | } while (err == ERANGE); | |
24 | return err ? 0 : h; | |
25 | } |
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