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11-basic-basic_errors.c
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11-basic-basic_errors.c
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/**
* Seccomp Library test program
*
* Copyright IBM Corp. 2012
* Author: Corey Bryant <[email protected]>
*/
/*
* This library is free software; you can redistribute it and/or modify it
* under the terms of version 2.1 of the GNU Lesser General Public License as
* published by the Free Software Foundation.
*
* This library is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
* for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library; if not, see <https://www.gnu.org/licenses>.
*/
#include <errno.h>
#include <unistd.h>
#include <seccomp.h>
int main(int argc, char *argv[])
{
int rc;
scmp_filter_ctx ctx;
uint32_t attr;
unsigned int api;
struct seccomp_notif *req = NULL;
struct seccomp_notif_resp *resp = NULL;
/* get the api level */
api = seccomp_api_get();
/* seccomp_init errors */
ctx = seccomp_init(SCMP_ACT_ALLOW + 1);
if (ctx != NULL)
return -1;
ctx = seccomp_init(SCMP_ACT_ALLOW);
if (ctx == NULL)
return -1;
seccomp_release(ctx);
ctx = NULL;
/* ensure that seccomp_reset(NULL, ...) is accepted */
rc = seccomp_reset(NULL, SCMP_ACT_ALLOW);
if (rc != 0)
return -1;
/* seccomp_load error */
rc = seccomp_load(ctx);
if (rc != -EINVAL)
return -1;
/* seccomp_syscall_priority errors */
rc = seccomp_syscall_priority(ctx, SCMP_SYS(read), 1);
if (rc != -EINVAL)
return -1;
ctx = seccomp_init(SCMP_ACT_ALLOW);
if (ctx == NULL)
return -1;
else {
rc = seccomp_syscall_priority(ctx, -10, 1);
if (rc != -EINVAL)
return -1;
}
seccomp_release(ctx);
ctx = NULL;
/* seccomp_rule_add errors */
rc = seccomp_rule_add(ctx, SCMP_ACT_ALLOW, SCMP_SYS(read), 1,
SCMP_A0(SCMP_CMP_EQ, 0));
if (rc != -EINVAL)
return -1;
ctx = seccomp_init(SCMP_ACT_ALLOW);
if (ctx == NULL)
return -1;
else {
rc = seccomp_rule_add(ctx, SCMP_ACT_ALLOW, SCMP_SYS(read), 0);
if (rc != -EACCES)
return -1;
rc = seccomp_rule_add(ctx, SCMP_ACT_KILL - 1, SCMP_SYS(read), 0);
if (rc != -EINVAL)
return -1;
rc = seccomp_rule_add(ctx, SCMP_ACT_KILL, SCMP_SYS(read), 7);
if (rc != -EINVAL)
return -1;
rc = seccomp_rule_add(ctx, SCMP_ACT_KILL, SCMP_SYS(read), 7,
SCMP_A0(SCMP_CMP_EQ, 0),
SCMP_A1(SCMP_CMP_EQ, 0),
SCMP_A2(SCMP_CMP_EQ, 0),
SCMP_A3(SCMP_CMP_EQ, 0),
SCMP_A4(SCMP_CMP_EQ, 0),
SCMP_A5(SCMP_CMP_EQ, 0),
SCMP_CMP(6, SCMP_CMP_EQ, 0));
if (rc != -EINVAL)
return -1;
rc = seccomp_rule_add(ctx, SCMP_ACT_KILL, SCMP_SYS(read), 1,
SCMP_A0(_SCMP_CMP_MIN, 0));
if (rc != -EINVAL)
return -1;
rc = seccomp_rule_add(ctx, SCMP_ACT_KILL, SCMP_SYS(read), 1,
SCMP_A0(_SCMP_CMP_MAX, 0));
if (rc != -EINVAL)
return -1;
rc = seccomp_rule_add_exact(ctx, SCMP_ACT_KILL, -10001, 0);
if (rc != -EDOM)
return -1;
}
seccomp_release(ctx);
ctx = NULL;
/* seccomp_rule_add_exact error */
ctx = seccomp_init(SCMP_ACT_ALLOW);
if (ctx == NULL)
return -1;
rc = seccomp_arch_remove(ctx, SCMP_ARCH_NATIVE);
if (rc != 0)
return -1;
rc = seccomp_arch_add(ctx, SCMP_ARCH_X86);
if (rc != 0)
return -1;
rc = seccomp_rule_add_exact(ctx, SCMP_ACT_KILL, SCMP_SYS(socket), 1,
SCMP_A0(SCMP_CMP_EQ, 2));
if (rc != -EINVAL)
return -1;
rc = seccomp_rule_add_exact(ctx, 0xdeadbeef, SCMP_SYS(open), 0);
if (rc != -EINVAL)
return -1;
seccomp_release(ctx);
ctx = NULL;
/* errno values beyond MAX_ERRNO */
ctx = seccomp_init(SCMP_ACT_ALLOW);
if (ctx == NULL)
return -1;
rc = seccomp_rule_add(ctx, SCMP_ACT_ERRNO(0xffff), 0, 0);
if (rc != -EINVAL)
return -1;
seccomp_release(ctx);
ctx = NULL;
/* seccomp_export_pfc errors */
rc = seccomp_export_pfc(ctx, STDOUT_FILENO);
if (rc != -EINVAL)
return -1;
ctx = seccomp_init(SCMP_ACT_ALLOW);
if (ctx == NULL)
return -1;
else {
rc = seccomp_export_pfc(ctx, sysconf(_SC_OPEN_MAX) - 1);
if (rc != -ECANCELED)
return -1;
}
seccomp_release(ctx);
ctx = NULL;
/* seccomp_export_bpf errors */
rc = seccomp_export_bpf(ctx, STDOUT_FILENO);
if (rc != -EINVAL)
return -1;
ctx = seccomp_init(SCMP_ACT_ALLOW);
if (ctx == NULL)
return -1;
else {
rc = seccomp_export_bpf(ctx, sysconf(_SC_OPEN_MAX) - 1);
if (rc != -ECANCELED)
return -1;
}
seccomp_release(ctx);
ctx = NULL;
/* seccomp_export_bpf_mem errors */
char buf[1024];
size_t buf_len = sizeof(buf);
rc = seccomp_export_bpf_mem(ctx, buf, &buf_len);
if (rc != -EINVAL)
return -1;
ctx = seccomp_init(SCMP_ACT_KILL);
if (ctx == NULL)
return -1;
rc = seccomp_export_bpf_mem(ctx, buf, NULL);
if (rc != -EINVAL)
return -1;
rc = seccomp_export_bpf_mem(ctx, NULL, NULL);
if (rc != -EINVAL)
return -1;
buf_len = sizeof(buf);
rc = seccomp_export_bpf_mem(ctx, NULL, &buf_len);
if (rc != 0)
return -1;
buf_len = sizeof(buf);
rc = seccomp_export_bpf_mem(ctx, buf, &buf_len);
if (rc != 0)
return -1;
rc = seccomp_rule_add(ctx, SCMP_ACT_ALLOW, SCMP_SYS(exit), 0);
if (rc != 0)
return -1;
buf_len = 0;
rc = seccomp_export_bpf_mem(ctx, buf, &buf_len);
if (rc != -ERANGE)
return -1;
seccomp_release(ctx);
ctx = NULL;
/* seccomp_attr_* errors */
ctx = seccomp_init(SCMP_ACT_ALLOW);
if (ctx == NULL)
return -1;
rc = seccomp_attr_get(ctx, 1000, &attr);
if (rc != -EINVAL)
return -1;
rc = seccomp_attr_set(ctx, 1000, 1);
if (rc != -EINVAL)
return -1;
seccomp_release(ctx);
ctx = NULL;
/* seccomp_merge() errors */
ctx = seccomp_init(SCMP_ACT_ALLOW);
if (ctx == NULL)
return -1;
rc = seccomp_merge(ctx, NULL);
if (rc == 0)
return -1;
seccomp_release(ctx);
ctx = NULL;
/* seccomp notify errors */
if (api >= 5) {
ctx = seccomp_init(SCMP_ACT_ALLOW);
if (ctx == NULL)
return -1;
rc = seccomp_notify_alloc(NULL, NULL);
if (rc != 0)
return -1;
rc = seccomp_notify_alloc(&req, NULL);
if (rc != 0)
return -1;
rc = seccomp_notify_alloc(NULL, &resp);
if (rc != 0)
return -1;
seccomp_notify_free(NULL, NULL);
seccomp_notify_free(req, resp);
req = NULL;
resp = NULL;
rc = seccomp_notify_receive(-1, NULL);
if (rc == 0)
return -1;
rc = seccomp_notify_respond(-1, NULL);
if (rc == 0)
return -1;
rc = seccomp_notify_id_valid(-1, 0);
if (rc == 0)
return -1;
rc = seccomp_notify_fd(NULL);
if (rc == 0)
return -1;
rc = seccomp_notify_fd(ctx);
if (rc == 0)
return -1;
seccomp_release(ctx);
ctx = NULL;
}
return 0;
}