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SUSE:SLE-15-SP1:GA
sssd.13030
0012-nss-use-enumeration-context-as-talloc-pare...
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File 0012-nss-use-enumeration-context-as-talloc-parent-for-cac.patch of Package sssd.13030
From 935a151822cfe10bdb21753373a413920949a637 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Pavel=20B=C5=99ezina?= <pbrezina@redhat.com> Date: Tue, 30 Oct 2018 13:21:28 +0100 Subject: [PATCH] nss: use enumeration context as talloc parent for cache req result Otherwise we end up with memory leak since the result is never freed. We need to convert nctx->*ent structures into talloc pointer so we can use enum_ctx as parent. Resolves: https://pagure.io/SSSD/sssd/issue/3870 Reviewed-by: Jakub Hrozek <jhrozek@redhat.com> (cherry picked from commit 406b731ddfbeb62623640cc37a7adc76af0a4b22) --- src/responder/nss/nss_cmd.c | 12 ++++++------ src/responder/nss/nss_enum.c | 2 +- src/responder/nss/nss_private.h | 6 +++--- src/responder/nss/nsssrv.c | 21 +++++++++++++++++++++ 4 files changed, 31 insertions(+), 10 deletions(-) diff --git a/src/responder/nss/nss_cmd.c b/src/responder/nss/nss_cmd.c index 9f8479b7b..7b2fc9d83 100644 --- a/src/responder/nss/nss_cmd.c +++ b/src/responder/nss/nss_cmd.c @@ -942,7 +942,7 @@ static errno_t nss_cmd_setpwent(struct cli_ctx *cli_ctx) nss_ctx = talloc_get_type(cli_ctx->rctx->pvt_ctx, struct nss_ctx); - return nss_setent(cli_ctx, CACHE_REQ_ENUM_USERS, &nss_ctx->pwent); + return nss_setent(cli_ctx, CACHE_REQ_ENUM_USERS, nss_ctx->pwent); } static errno_t nss_cmd_getpwent(struct cli_ctx *cli_ctx) @@ -955,7 +955,7 @@ static errno_t nss_cmd_getpwent(struct cli_ctx *cli_ctx) return nss_getent(cli_ctx, CACHE_REQ_ENUM_USERS, &state_ctx->pwent, nss_protocol_fill_pwent, - &nss_ctx->pwent); + nss_ctx->pwent); } static errno_t nss_cmd_endpwent(struct cli_ctx *cli_ctx) @@ -998,7 +998,7 @@ static errno_t nss_cmd_setgrent(struct cli_ctx *cli_ctx) nss_ctx = talloc_get_type(cli_ctx->rctx->pvt_ctx, struct nss_ctx); - return nss_setent(cli_ctx, CACHE_REQ_ENUM_GROUPS, &nss_ctx->grent); + return nss_setent(cli_ctx, CACHE_REQ_ENUM_GROUPS, nss_ctx->grent); } static errno_t nss_cmd_getgrent(struct cli_ctx *cli_ctx) @@ -1011,7 +1011,7 @@ static errno_t nss_cmd_getgrent(struct cli_ctx *cli_ctx) return nss_getent(cli_ctx, CACHE_REQ_ENUM_GROUPS, &state_ctx->grent, nss_protocol_fill_grent, - &nss_ctx->grent); + nss_ctx->grent); } static errno_t nss_cmd_endgrent(struct cli_ctx *cli_ctx) @@ -1093,7 +1093,7 @@ static errno_t nss_cmd_setservent(struct cli_ctx *cli_ctx) nss_ctx = talloc_get_type(cli_ctx->rctx->pvt_ctx, struct nss_ctx); - return nss_setent(cli_ctx, CACHE_REQ_ENUM_SVC, &nss_ctx->svcent); + return nss_setent(cli_ctx, CACHE_REQ_ENUM_SVC, nss_ctx->svcent); } static errno_t nss_cmd_getservent(struct cli_ctx *cli_ctx) @@ -1106,7 +1106,7 @@ static errno_t nss_cmd_getservent(struct cli_ctx *cli_ctx) return nss_getent(cli_ctx, CACHE_REQ_ENUM_SVC, &state_ctx->svcent, nss_protocol_fill_svcent, - &nss_ctx->svcent); + nss_ctx->svcent); } static errno_t nss_cmd_endservent(struct cli_ctx *cli_ctx) diff --git a/src/responder/nss/nss_enum.c b/src/responder/nss/nss_enum.c index b2b22bbae..9ea265217 100644 --- a/src/responder/nss/nss_enum.c +++ b/src/responder/nss/nss_enum.c @@ -138,7 +138,7 @@ static void nss_setent_internal_done(struct tevent_req *subreq) switch (ret) { case EOK: talloc_zfree(state->enum_ctx->result); - state->enum_ctx->result = talloc_steal(state->nss_ctx, result); + state->enum_ctx->result = talloc_steal(state->enum_ctx, result); if (state->type == CACHE_REQ_NETGROUP_BY_NAME) { /* We need to expand the netgroup into triples and members. */ diff --git a/src/responder/nss/nss_private.h b/src/responder/nss/nss_private.h index aa8d8e9cd..cd0d35517 100644 --- a/src/responder/nss/nss_private.h +++ b/src/responder/nss/nss_private.h @@ -78,9 +78,9 @@ struct nss_ctx { const char **extra_attributes; /* Enumeration. */ - struct nss_enum_ctx pwent; - struct nss_enum_ctx grent; - struct nss_enum_ctx svcent; + struct nss_enum_ctx *pwent; + struct nss_enum_ctx *grent; + struct nss_enum_ctx *svcent; hash_table_t *netgrent; /* Memory cache. */ diff --git a/src/responder/nss/nsssrv.c b/src/responder/nss/nsssrv.c index 004e6c1a1..d6c5a08a9 100644 --- a/src/responder/nss/nsssrv.c +++ b/src/responder/nss/nsssrv.c @@ -378,6 +378,27 @@ int nss_process_init(TALLOC_CTX *mem_ctx, goto fail; } + nctx->pwent = talloc_zero(nctx, struct nss_enum_ctx); + if (nctx->pwent == NULL) { + DEBUG(SSSDBG_FATAL_FAILURE, "Unable to initialize pwent context!\n"); + ret = ENOMEM; + goto fail; + } + + nctx->grent = talloc_zero(nctx, struct nss_enum_ctx); + if (nctx->grent == NULL) { + DEBUG(SSSDBG_FATAL_FAILURE, "Unable to initialize grent context!\n"); + ret = ENOMEM; + goto fail; + } + + nctx->svcent = talloc_zero(nctx, struct nss_enum_ctx); + if (nctx->svcent == NULL) { + DEBUG(SSSDBG_FATAL_FAILURE, "Unable to initialize svcent context!\n"); + ret = ENOMEM; + goto fail; + } + nctx->netgrent = sss_ptr_hash_create(nctx, NULL, NULL); if (nctx->netgrent == NULL) { DEBUG(SSSDBG_FATAL_FAILURE, "Unable to initialize netgroups table!\n"); -- 2.22.0
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