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| author | Lennart Poettering <lennart@poettering.net> | 2019-01-18 20:13:55 +0100 |
|---|---|---|
| committer | Lennart Poettering <lennart@poettering.net> | 2019-02-08 10:34:47 +0100 |
| commit | cdccd29f39cd20cb2a8b71e50445eb839f076331 (patch) | |
| tree | 22361057d01ea2c1aae6246546b4d00fc28a7349 /src/nss-resolve | |
| parent | util.h: add new UNPROTECT_ERRNO macro (diff) | |
| download | systemd-cdccd29f39cd20cb2a8b71e50445eb839f076331.tar.xz systemd-cdccd29f39cd20cb2a8b71e50445eb839f076331.zip | |
nss: unportect errno before writing to NSS' *errnop
Fixes: #11321
Diffstat (limited to 'src/nss-resolve')
| -rw-r--r-- | src/nss-resolve/nss-resolve.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/src/nss-resolve/nss-resolve.c b/src/nss-resolve/nss-resolve.c index a28b5d8ba8..8370fed076 100644 --- a/src/nss-resolve/nss-resolve.c +++ b/src/nss-resolve/nss-resolve.c @@ -186,6 +186,7 @@ enum nss_status _nss_resolve_gethostbyname4_r( l = strlen(canonical); ms = ALIGN(l+1) + ALIGN(sizeof(struct gaih_addrtuple)) * c; if (buflen < ms) { + UNPROTECT_ERRNO; *errnop = ERANGE; *h_errnop = NETDB_INTERNAL; return NSS_STATUS_TRYAGAIN; @@ -267,6 +268,7 @@ enum nss_status _nss_resolve_gethostbyname4_r( return NSS_STATUS_SUCCESS; fail: + UNPROTECT_ERRNO; *errnop = -r; *h_errnop = NO_RECOVERY; return ret; @@ -364,6 +366,7 @@ enum nss_status _nss_resolve_gethostbyname3_r( ms = ALIGN(l+1) + c * ALIGN(alen) + (c+2) * sizeof(char*); if (buflen < ms) { + UNPROTECT_ERRNO; *errnop = ERANGE; *h_errnop = NETDB_INTERNAL; return NSS_STATUS_TRYAGAIN; @@ -455,6 +458,7 @@ enum nss_status _nss_resolve_gethostbyname3_r( return NSS_STATUS_SUCCESS; fail: + UNPROTECT_ERRNO; *errnop = -r; *h_errnop = NO_RECOVERY; return ret; @@ -492,12 +496,14 @@ enum nss_status _nss_resolve_gethostbyaddr2_r( assert(h_errnop); if (!IN_SET(af, AF_INET, AF_INET6)) { + UNPROTECT_ERRNO; *errnop = EAFNOSUPPORT; *h_errnop = NO_DATA; return NSS_STATUS_UNAVAIL; } if (len != FAMILY_ADDRESS_SIZE(af)) { + UNPROTECT_ERRNO; *errnop = EINVAL; *h_errnop = NO_RECOVERY; return NSS_STATUS_UNAVAIL; @@ -576,6 +582,7 @@ enum nss_status _nss_resolve_gethostbyaddr2_r( c * sizeof(char*); /* pointers to aliases, plus trailing NULL */ if (buflen < ms) { + UNPROTECT_ERRNO; *errnop = ERANGE; *h_errnop = NETDB_INTERNAL; return NSS_STATUS_TRYAGAIN; @@ -636,6 +643,7 @@ enum nss_status _nss_resolve_gethostbyaddr2_r( return NSS_STATUS_SUCCESS; fail: + UNPROTECT_ERRNO; *errnop = -r; *h_errnop = NO_RECOVERY; return ret; |