c4fbe94a75
Fix two bugs in name resolving. OBS-URL: https://build.opensuse.org/request/show/127122 OBS-URL: https://build.opensuse.org/package/show/Base:System/glibc?expand=0&rev=200
78 lines
2.8 KiB
Diff
78 lines
2.8 KiB
Diff
2012-07-02 Jeroen van Bemmel <jvb127@gmail.com>
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[BZ #14307]
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[BZ #13904]
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* sysdeps/posix/getaddrinfo.c ( gaih_inet ): Increase the size of
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the temporary buffer used to invoke __gethostbyname2_r,
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__gethostbyaddr_r and gethostbyname4_r to make room for struct
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host_data / struct gaih_addrtuple.
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* resolv/nss_dns/dns-host.c (global scope): Move definition of
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implementation constants MAX_NR_ALIASES and MAX_NR_ADDRS to
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header file nss/nsswitch.h.
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* nss/nsswitch.h (global scope): Add definition of implementation
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constants MAX_NR_ALIASES and MAX_NR_ADDRS (moved from
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resolv/nss_dns/dns-host.c).
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diff --git glibc/nss/nsswitch.h glibc/nss/nsswitch.h
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index 90e208b..8965819 100644
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--- glibc/nss/nsswitch.h
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+++ glibc/nss/nsswitch.h
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@@ -198,4 +198,8 @@ extern int __nss_hostname_digits_dots (const char *name,
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int *h_errnop);
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libc_hidden_proto (__nss_hostname_digits_dots)
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+/* Maximum number of aliases we allow. */
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+#define MAX_NR_ALIASES 48
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+#define MAX_NR_ADDRS 48
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+
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#endif /* nsswitch.h */
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diff --git glibc/resolv/nss_dns/dns-host.c glibc/resolv/nss_dns/dns-host.c
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index a924d40..6b62c05 100644
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--- glibc/resolv/nss_dns/dns-host.c
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+++ glibc/resolv/nss_dns/dns-host.c
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@@ -88,10 +88,6 @@
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#define RESOLVSORT
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-/* Maximum number of aliases we allow. */
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-#define MAX_NR_ALIASES 48
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-#define MAX_NR_ADDRS 48
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-
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#if PACKETSZ > 65536
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# define MAXPACKET PACKETSZ
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#else
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diff --git glibc/sysdeps/posix/getaddrinfo.c glibc/sysdeps/posix/getaddrinfo.c
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index 2eca2ae..efb0423 100644
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--- glibc/sysdeps/posix/getaddrinfo.c
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+++ glibc/sysdeps/posix/getaddrinfo.c
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@@ -568,7 +568,8 @@ gaih_inet (const char *name, const struct gaih_service *service,
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IPv6 scope ids. */
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if (req->ai_family == AF_INET)
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{
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- size_t tmpbuflen = 512;
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+ /* Allocate additional room for struct host_data in getanswer_r */
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+ size_t tmpbuflen = 512 + MAX_NR_ALIASES * sizeof(char*) + 16 * sizeof(char);
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assert (tmpbuf == NULL);
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tmpbuf = alloca_account (tmpbuflen, alloca_used);
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int rc;
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@@ -811,7 +812,7 @@ gaih_inet (const char *name, const struct gaih_service *service,
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old_res_options = _res.options;
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_res.options &= ~RES_USE_INET6;
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- size_t tmpbuflen = 1024;
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+ size_t tmpbuflen = 1024 + sizeof(struct gaih_addrtuple);
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malloc_tmpbuf = !__libc_use_alloca (alloca_used + tmpbuflen);
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assert (tmpbuf == NULL);
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if (!malloc_tmpbuf)
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@@ -1113,7 +1114,9 @@ gaih_inet (const char *name, const struct gaih_service *service,
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struct hostent *h = NULL;
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int herrno;
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struct hostent th;
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- size_t tmpbuf2len = 512;
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+ /* Add room for struct host_data in resolv/nss_dns/dns-host.c */
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+ size_t tmpbuf2len = 512 + (MAX_NR_ALIASES+MAX_NR_ADDRS+1)*sizeof(char*)
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+ + 16 * sizeof(char);
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do
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{
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