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seccomp: shm{get,at,dt} now have their own numbers everywhere

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E.g. on i686:

(previously)
arch x86: SCMP_SYS(mmap) = 90
arch x86: SCMP_SYS(mmap2) = 192
arch x86: SCMP_SYS(shmat) = -221
arch x86: SCMP_SYS(shmat) = -221
arch x86: SCMP_SYS(shmdt) = -222

(now)
arch x86: SCMP_SYS(mmap) = 90
arch x86: SCMP_SYS(mmap2) = 192
arch x86: SCMP_SYS(shmat) = 397
arch x86: SCMP_SYS(shmat) = 397
arch x86: SCMP_SYS(shmdt) = 398

The relevant commit seems to be
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=0d6040d46817.
This commit is contained in:
Zbigniew Jędrzejewski-Szmek 2019-03-15 11:57:49 +01:00
parent a75fcef8fb
commit e55bdf9b6c
2 changed files with 9 additions and 5 deletions
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5
src/shared/seccomp-util.c
View File

@ -1502,14 +1502,9 @@ static int add_seccomp_syscall_filter(scmp_filter_ctx seccomp,
assert_cc(SCMP_SYS(shmget) > 0);
assert_cc(SCMP_SYS(shmat) > 0);
assert_cc(SCMP_SYS(shmdt) > 0);
#elif defined(__i386__) || defined(__powerpc64__)
assert_cc(SCMP_SYS(shmget) < 0);
assert_cc(SCMP_SYS(shmat) < 0);
assert_cc(SCMP_SYS(shmdt) < 0);
#endif
int seccomp_memory_deny_write_execute(void) {
uint32_t arch;
int r;

9
src/test/test-seccomp.c
View File

@ -507,9 +507,18 @@ static void test_memory_deny_write_execute_mmap(void) {
static void test_memory_deny_write_execute_shmat(void) {
int shmid;
pid_t pid;
uint32_t arch;
log_info("/* %s */", __func__);
SECCOMP_FOREACH_LOCAL_ARCH(arch) {
log_debug("arch %s: SCMP_SYS(mmap) = %d", seccomp_arch_to_string(arch), SCMP_SYS(mmap));
log_debug("arch %s: SCMP_SYS(mmap2) = %d", seccomp_arch_to_string(arch), SCMP_SYS(mmap2));
log_debug("arch %s: SCMP_SYS(shmget) = %d", seccomp_arch_to_string(arch), SCMP_SYS(shmget));
log_debug("arch %s: SCMP_SYS(shmat) = %d", seccomp_arch_to_string(arch), SCMP_SYS(shmat));
log_debug("arch %s: SCMP_SYS(shmdt) = %d", seccomp_arch_to_string(arch), SCMP_SYS(shmdt));
}
if (!is_seccomp_available()) {
log_notice("Seccomp not available, skipping %s", __func__);
return;