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66e9d27a09
It consolidates the code required to call la_activity audit
callback.
Also for a new Lmid_t the namespace link_map list are empty, so it
requires to check if before using it. This can happen for when audit
module is used along with dlmopen.
Checked on x86_64-linux-gnu, i686-linux-gnu, and aarch64-linux-gnu.
Reviewed-by: Florian Weimer <fweimer@redhat.com>
(cherry picked from commit 3dac3959a5)
66 lines
2.0 KiB
C
66 lines
2.0 KiB
C
/* Audit common functions.
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Copyright (C) 2021 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#include <ldsodefs.h>
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void
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_dl_audit_activity_map (struct link_map *l, int action)
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{
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struct audit_ifaces *afct = GLRO(dl_audit);
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for (unsigned int cnt = 0; cnt < GLRO(dl_naudit); ++cnt)
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{
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if (afct->activity != NULL)
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afct->activity (&link_map_audit_state (l, cnt)->cookie, action);
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afct = afct->next;
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}
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}
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void
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_dl_audit_activity_nsid (Lmid_t nsid, int action)
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{
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/* If head is NULL, the namespace has become empty, and the audit interface
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does not give us a way to signal LA_ACT_CONSISTENT for it because the
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first loaded module is used to identify the namespace. */
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struct link_map *head = GL(dl_ns)[nsid]._ns_loaded;
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if (__glibc_likely (GLRO(dl_naudit) == 0)
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|| head == NULL || head->l_auditing)
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return;
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_dl_audit_activity_map (head, action);
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}
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void
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_dl_audit_objopen (struct link_map *l, Lmid_t nsid)
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{
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if (__glibc_likely (GLRO(dl_naudit) == 0))
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return;
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struct audit_ifaces *afct = GLRO(dl_audit);
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for (unsigned int cnt = 0; cnt < GLRO(dl_naudit); ++cnt)
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{
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if (afct->objopen != NULL)
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{
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struct auditstate *state = link_map_audit_state (l, cnt);
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state->bindflags = afct->objopen (l, nsid, &state->cookie);
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l->l_audit_any_plt |= state->bindflags != 0;
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}
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afct = afct->next;
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}
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}
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