diff options
Diffstat (limited to 'sysdeps')
| -rw-r--r-- | sysdeps/posix/getaddrinfo.c | 214 |
1 files changed, 107 insertions, 107 deletions
diff --git a/sysdeps/posix/getaddrinfo.c b/sysdeps/posix/getaddrinfo.c index 3121d3bb65..50855ceaab 100644 --- a/sysdeps/posix/getaddrinfo.c +++ b/sysdeps/posix/getaddrinfo.c @@ -566,113 +566,6 @@ gaih_inet (const char *name, const struct gaih_service *service, int no_more; int old_res_options; - /* If we do not have to look for IPv6 addresses or the canonical - name, use the simple, old functions, which do not support - IPv6 scope ids, nor retrieving the canonical name. */ - if (req->ai_family == AF_INET - && (req->ai_flags & AI_CANONNAME) == 0) - { - /* Allocate additional room for struct host_data. */ - size_t tmpbuflen = (512 + MAX_NR_ALIASES * sizeof(char*) - + 16 * sizeof(char)); - assert (tmpbuf == NULL); - tmpbuf = alloca_account (tmpbuflen, alloca_used); - int rc; - struct hostent th; - struct hostent *h; - int herrno; - - while (1) - { - rc = __gethostbyname2_r (name, AF_INET, &th, tmpbuf, - tmpbuflen, &h, &herrno); - if (rc != ERANGE || herrno != NETDB_INTERNAL) - break; - - if (!malloc_tmpbuf - && __libc_use_alloca (alloca_used + 2 * tmpbuflen)) - tmpbuf = extend_alloca_account (tmpbuf, tmpbuflen, - 2 * tmpbuflen, - alloca_used); - else - { - char *newp = realloc (malloc_tmpbuf ? tmpbuf : NULL, - 2 * tmpbuflen); - if (newp == NULL) - { - result = -EAI_MEMORY; - goto free_and_return; - } - tmpbuf = newp; - malloc_tmpbuf = true; - tmpbuflen = 2 * tmpbuflen; - } - } - - if (rc == 0) - { - if (h != NULL) - { - int i; - /* We found data, count the number of addresses. */ - for (i = 0; h->h_addr_list[i]; ++i) - ; - if (i > 0 && *pat != NULL) - --i; - - if (__libc_use_alloca (alloca_used - + i * sizeof (struct gaih_addrtuple))) - addrmem = alloca_account (i * sizeof (struct gaih_addrtuple), - alloca_used); - else - { - addrmem = malloc (i - * sizeof (struct gaih_addrtuple)); - if (addrmem == NULL) - { - result = -EAI_MEMORY; - goto free_and_return; - } - malloc_addrmem = true; - } - - /* Now convert it into the list. */ - struct gaih_addrtuple *addrfree = addrmem; - for (i = 0; h->h_addr_list[i]; ++i) - { - if (*pat == NULL) - { - *pat = addrfree++; - (*pat)->scopeid = 0; - } - (*pat)->next = NULL; - (*pat)->family = AF_INET; - memcpy ((*pat)->addr, h->h_addr_list[i], - h->h_length); - pat = &((*pat)->next); - } - } - } - else - { - if (herrno == NETDB_INTERNAL) - { - __set_h_errno (herrno); - result = -EAI_SYSTEM; - } - else if (herrno == TRY_AGAIN) - result = -EAI_AGAIN; - else - /* We made requests but they turned out no data. - The name is known, though. */ - result = -EAI_NODATA; - - goto free_and_return; - } - - goto process_list; - } - #ifdef USE_NSCD if (__nss_not_use_nscd_hosts > 0 && ++__nss_not_use_nscd_hosts > NSS_NSCD_RETRY) @@ -806,6 +699,113 @@ gaih_inet (const char *name, const struct gaih_service *service, } #endif + /* If we do not have to look for IPv6 addresses or the canonical + name, use the simple, old functions, which do not support + IPv6 scope ids, nor retrieving the canonical name. */ + if (req->ai_family == AF_INET + && (req->ai_flags & AI_CANONNAME) == 0) + { + /* Allocate additional room for struct host_data. */ + size_t tmpbuflen = (512 + MAX_NR_ALIASES * sizeof(char*) + + 16 * sizeof(char)); + assert (tmpbuf == NULL); + tmpbuf = alloca_account (tmpbuflen, alloca_used); + int rc; + struct hostent th; + struct hostent *h; + int herrno; + + while (1) + { + rc = __gethostbyname2_r (name, AF_INET, &th, tmpbuf, + tmpbuflen, &h, &herrno); + if (rc != ERANGE || herrno != NETDB_INTERNAL) + break; + + if (!malloc_tmpbuf + && __libc_use_alloca (alloca_used + 2 * tmpbuflen)) + tmpbuf = extend_alloca_account (tmpbuf, tmpbuflen, + 2 * tmpbuflen, + alloca_used); + else + { + char *newp = realloc (malloc_tmpbuf ? tmpbuf : NULL, + 2 * tmpbuflen); + if (newp == NULL) + { + result = -EAI_MEMORY; + goto free_and_return; + } + tmpbuf = newp; + malloc_tmpbuf = true; + tmpbuflen = 2 * tmpbuflen; + } + } + + if (rc == 0) + { + if (h != NULL) + { + int i; + /* We found data, count the number of addresses. */ + for (i = 0; h->h_addr_list[i]; ++i) + ; + if (i > 0 && *pat != NULL) + --i; + + if (__libc_use_alloca (alloca_used + + i * sizeof (struct gaih_addrtuple))) + addrmem = alloca_account (i * sizeof (struct gaih_addrtuple), + alloca_used); + else + { + addrmem = malloc (i + * sizeof (struct gaih_addrtuple)); + if (addrmem == NULL) + { + result = -EAI_MEMORY; + goto free_and_return; + } + malloc_addrmem = true; + } + + /* Now convert it into the list. */ + struct gaih_addrtuple *addrfree = addrmem; + for (i = 0; h->h_addr_list[i]; ++i) + { + if (*pat == NULL) + { + *pat = addrfree++; + (*pat)->scopeid = 0; + } + (*pat)->next = NULL; + (*pat)->family = AF_INET; + memcpy ((*pat)->addr, h->h_addr_list[i], + h->h_length); + pat = &((*pat)->next); + } + } + } + else + { + if (herrno == NETDB_INTERNAL) + { + __set_h_errno (herrno); + result = -EAI_SYSTEM; + } + else if (herrno == TRY_AGAIN) + result = -EAI_AGAIN; + else + /* We made requests but they turned out no data. + The name is known, though. */ + result = -EAI_NODATA; + + goto free_and_return; + } + + goto process_list; + } + if (__nss_hosts_database == NULL) no_more = __nss_database_lookup ("hosts", NULL, "dns [!UNAVAIL=return] files", |