seccomp: real syscall numbers are >= 0
Real syscall numbers start at 0. The fake seccomp values seem to be
strictly less than 0.
Fixes: 4df8fe8415
This commit is contained in:
Mike Gilbert
Lennart Poettering
parent
0cab1f1976
commit
fb4b0465ab
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@ -35,7 +35,7 @@ static inline int missing_pivot_root(const char *new_root, const char *put_old)
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#if !HAVE_MEMFD_CREATE
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/* may be (invalid) negative number due to libseccomp, see PR 13319 */
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# if ! (defined __NR_memfd_create && __NR_memfd_create > 0)
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# if ! (defined __NR_memfd_create && __NR_memfd_create >= 0)
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# if defined __NR_memfd_create
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# undef __NR_memfd_create
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# endif
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@ -82,7 +82,7 @@ static inline int missing_memfd_create(const char *name, unsigned int flags) {
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#if !HAVE_GETRANDOM
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/* may be (invalid) negative number due to libseccomp, see PR 13319 */
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# if ! (defined __NR_getrandom && __NR_getrandom > 0)
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# if ! (defined __NR_getrandom && __NR_getrandom >= 0)
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# if defined __NR_getrandom
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# undef __NR_getrandom
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# endif
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@ -145,7 +145,7 @@ static inline pid_t missing_gettid(void) {
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#if !HAVE_NAME_TO_HANDLE_AT
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/* may be (invalid) negative number due to libseccomp, see PR 13319 */
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# if ! (defined __NR_name_to_handle_at && __NR_name_to_handle_at > 0)
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# if ! (defined __NR_name_to_handle_at && __NR_name_to_handle_at >= 0)
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# if defined __NR_name_to_handle_at
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# undef __NR_name_to_handle_at
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# endif
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@ -186,7 +186,7 @@ static inline int missing_name_to_handle_at(int fd, const char *name, struct fil
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#if !HAVE_SETNS
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/* may be (invalid) negative number due to libseccomp, see PR 13319 */
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# if ! (defined __NR_setns && __NR_setns > 0)
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# if ! (defined __NR_setns && __NR_setns >= 0)
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# if defined __NR_setns
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# undef __NR_setns
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# endif
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@ -227,7 +227,7 @@ static inline pid_t raw_getpid(void) {
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#if !HAVE_RENAMEAT2
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/* may be (invalid) negative number due to libseccomp, see PR 13319 */
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# if ! (defined __NR_renameat2 && __NR_renameat2 > 0)
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# if ! (defined __NR_renameat2 && __NR_renameat2 >= 0)
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# if defined __NR_renameat2
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# undef __NR_renameat2
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# endif
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@ -276,7 +276,7 @@ static inline int missing_renameat2(int oldfd, const char *oldname, int newfd, c
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#if !HAVE_KCMP
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static inline int missing_kcmp(pid_t pid1, pid_t pid2, int type, unsigned long idx1, unsigned long idx2) {
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# if defined __NR_kcmp && __NR_kcmp > 0
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# if defined __NR_kcmp && __NR_kcmp >= 0
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return syscall(__NR_kcmp, pid1, pid2, type, idx1, idx2);
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# else
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errno = ENOSYS;
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@ -291,7 +291,7 @@ static inline int missing_kcmp(pid_t pid1, pid_t pid2, int type, unsigned long i
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#if !HAVE_KEYCTL
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static inline long missing_keyctl(int cmd, unsigned long arg2, unsigned long arg3, unsigned long arg4, unsigned long arg5) {
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# if defined __NR_keyctl && __NR_keyctl > 0
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# if defined __NR_keyctl && __NR_keyctl >= 0
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return syscall(__NR_keyctl, cmd, arg2, arg3, arg4, arg5);
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# else
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errno = ENOSYS;
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@ -302,7 +302,7 @@ static inline long missing_keyctl(int cmd, unsigned long arg2, unsigned long arg
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}
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static inline key_serial_t missing_add_key(const char *type, const char *description, const void *payload, size_t plen, key_serial_t ringid) {
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# if defined __NR_add_key && __NR_add_key > 0
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# if defined __NR_add_key && __NR_add_key >= 0
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return syscall(__NR_add_key, type, description, payload, plen, ringid);
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# else
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errno = ENOSYS;
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@ -313,7 +313,7 @@ static inline key_serial_t missing_add_key(const char *type, const char *descrip
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}
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static inline key_serial_t missing_request_key(const char *type, const char *description, const char * callout_info, key_serial_t destringid) {
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# if defined __NR_request_key && __NR_request_key > 0
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# if defined __NR_request_key && __NR_request_key >= 0
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return syscall(__NR_request_key, type, description, callout_info, destringid);
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# else
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errno = ENOSYS;
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@ -328,7 +328,7 @@ static inline key_serial_t missing_request_key(const char *type, const char *des
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#if !HAVE_COPY_FILE_RANGE
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/* may be (invalid) negative number due to libseccomp, see PR 13319 */
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# if ! (defined __NR_copy_file_range && __NR_copy_file_range > 0)
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# if ! (defined __NR_copy_file_range && __NR_copy_file_range >= 0)
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# if defined __NR_copy_file_range
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# undef __NR_copy_file_range
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# endif
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@ -370,7 +370,7 @@ static inline ssize_t missing_copy_file_range(int fd_in, loff_t *off_in,
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#if !HAVE_BPF
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/* may be (invalid) negative number due to libseccomp, see PR 13319 */
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# if ! (defined __NR_bpf && __NR_bpf > 0)
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# if ! (defined __NR_bpf && __NR_bpf >= 0)
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# if defined __NR_bpf
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# undef __NR_bpf
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# endif
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@ -411,7 +411,7 @@ static inline int missing_bpf(int cmd, union bpf_attr *attr, size_t size) {
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#ifndef __IGNORE_pkey_mprotect
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/* may be (invalid) negative number due to libseccomp, see PR 13319 */
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# if ! (defined __NR_pkey_mprotect && __NR_pkey_mprotect > 0)
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# if ! (defined __NR_pkey_mprotect && __NR_pkey_mprotect >= 0)
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# if defined __NR_pkey_mprotect
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# undef __NR_pkey_mprotect
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# endif
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@ -447,7 +447,7 @@ static inline int missing_bpf(int cmd, union bpf_attr *attr, size_t size) {
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#if !HAVE_STATX
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/* may be (invalid) negative number due to libseccomp, see PR 13319 */
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# if ! (defined __NR_statx && __NR_statx > 0)
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# if ! (defined __NR_statx && __NR_statx >= 0)
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# if defined __NR_statx
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# undef __NR_statx
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# endif
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@ -498,7 +498,7 @@ enum {
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static inline long missing_set_mempolicy(int mode, const unsigned long *nodemask,
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unsigned long maxnode) {
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long i;
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# if defined __NR_set_mempolicy && __NR_set_mempolicy > 0
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# if defined __NR_set_mempolicy && __NR_set_mempolicy >= 0
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i = syscall(__NR_set_mempolicy, mode, nodemask, maxnode);
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# else
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errno = ENOSYS;
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@ -529,7 +529,7 @@ static inline long missing_get_mempolicy(int *mode, unsigned long *nodemask,
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#if !HAVE_PIDFD_OPEN
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/* may be (invalid) negative number due to libseccomp, see PR 13319 */
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# if ! (defined __NR_pidfd_open && __NR_pidfd_open > 0)
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# if ! (defined __NR_pidfd_open && __NR_pidfd_open >= 0)
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# if defined __NR_pidfd_open
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# undef __NR_pidfd_open
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# endif
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@ -547,7 +547,7 @@ static inline int pidfd_open(pid_t pid, unsigned flags) {
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#if !HAVE_PIDFD_SEND_SIGNAL
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/* may be (invalid) negative number due to libseccomp, see PR 13319 */
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# if ! (defined __NR_pidfd_send_signal && __NR_pidfd_send_signal > 0)
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# if ! (defined __NR_pidfd_send_signal && __NR_pidfd_send_signal >= 0)
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# if defined __NR_pidfd_send_signal
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# undef __NR_pidfd_send_signal
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# endif
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@ -29,7 +29,7 @@
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#include "virt.h"
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/* __NR_socket may be invalid due to libseccomp */
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#if !defined(__NR_socket) || __NR_socket <= 0 || defined(__i386__) || defined(__s390x__) || defined(__s390__)
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#if !defined(__NR_socket) || __NR_socket < 0 || defined(__i386__) || defined(__s390x__) || defined(__s390__)
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/* On these archs, socket() is implemented via the socketcall() syscall multiplexer,
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* and we can't restrict it hence via seccomp. */
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# define SECCOMP_RESTRICT_ADDRESS_FAMILIES_BROKEN 1
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@ -305,14 +305,14 @@ static void test_protect_sysctl(void) {
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assert_se(pid >= 0);
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if (pid == 0) {
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#if defined __NR__sysctl && __NR__sysctl > 0
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#if defined __NR__sysctl && __NR__sysctl >= 0
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assert_se(syscall(__NR__sysctl, NULL) < 0);
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assert_se(errno == EFAULT);
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#endif
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assert_se(seccomp_protect_sysctl() >= 0);
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#if defined __NR__sysctl && __NR__sysctl > 0
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#if defined __NR__sysctl && __NR__sysctl >= 0
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assert_se(syscall(__NR__sysctl, 0, 0, 0) < 0);
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assert_se(errno == EPERM);
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#endif
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@ -347,14 +347,14 @@ static void test_protect_syslog(void) {
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assert_se(pid >= 0);
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if (pid == 0) {
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#if defined __NR_syslog && __NR_syslog > 0
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#if defined __NR_syslog && __NR_syslog >= 0
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assert_se(syscall(__NR_syslog, -1, NULL, 0) < 0);
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assert_se(errno == EINVAL);
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#endif
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assert_se(seccomp_protect_syslog() >= 0);
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#if defined __NR_syslog && __NR_syslog > 0
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#if defined __NR_syslog && __NR_syslog >= 0
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assert_se(syscall(__NR_syslog, 0, 0, 0) < 0);
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assert_se(errno == EPERM);
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#endif
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@ -684,7 +684,7 @@ static void test_load_syscall_filter_set_raw(void) {
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assert_se(poll(NULL, 0, 0) == 0);
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assert_se(s = hashmap_new(NULL));
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#if defined __NR_access && __NR_access > 0
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#if defined __NR_access && __NR_access >= 0
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assert_se(hashmap_put(s, UINT32_TO_PTR(__NR_access + 1), INT_TO_PTR(-1)) >= 0);
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#else
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assert_se(hashmap_put(s, UINT32_TO_PTR(__NR_faccessat + 1), INT_TO_PTR(-1)) >= 0);
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@ -700,7 +700,7 @@ static void test_load_syscall_filter_set_raw(void) {
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s = hashmap_free(s);
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assert_se(s = hashmap_new(NULL));
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#if defined __NR_access && __NR_access > 0
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#if defined __NR_access && __NR_access >= 0
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assert_se(hashmap_put(s, UINT32_TO_PTR(__NR_access + 1), INT_TO_PTR(EILSEQ)) >= 0);
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#else
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assert_se(hashmap_put(s, UINT32_TO_PTR(__NR_faccessat + 1), INT_TO_PTR(EILSEQ)) >= 0);
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@ -716,7 +716,7 @@ static void test_load_syscall_filter_set_raw(void) {
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s = hashmap_free(s);
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assert_se(s = hashmap_new(NULL));
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#if defined __NR_poll && __NR_poll > 0
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#if defined __NR_poll && __NR_poll >= 0
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assert_se(hashmap_put(s, UINT32_TO_PTR(__NR_poll + 1), INT_TO_PTR(-1)) >= 0);
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#else
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assert_se(hashmap_put(s, UINT32_TO_PTR(__NR_ppoll + 1), INT_TO_PTR(-1)) >= 0);
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@ -733,7 +733,7 @@ static void test_load_syscall_filter_set_raw(void) {
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s = hashmap_free(s);
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assert_se(s = hashmap_new(NULL));
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#if defined __NR_poll && __NR_poll > 0
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#if defined __NR_poll && __NR_poll >= 0
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assert_se(hashmap_put(s, UINT32_TO_PTR(__NR_poll + 1), INT_TO_PTR(EILSEQ)) >= 0);
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#else
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assert_se(hashmap_put(s, UINT32_TO_PTR(__NR_ppoll + 1), INT_TO_PTR(EILSEQ)) >= 0);
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@ -811,7 +811,7 @@ static int real_open(const char *path, int flags, mode_t mode) {
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* testing purposes that calls the real syscall, on architectures where SYS_open is defined. On
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* other architectures, let's just fall back to the glibc call. */
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#if defined __NR_open && __NR_open > 0
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#if defined __NR_open && __NR_open >= 0
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return (int) syscall(__NR_open, path, flags, mode);
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#else
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return open(path, flags, mode);
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