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@@ -67,6 +67,28 @@
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#include <execinfo.h>
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#endif
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+/**
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+ * Linux 32 bit definitions
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+ */
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+#if defined(__i386__)
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+
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+#define REG_SYSCALL REG_EAX
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+#define M_SYSCALL gregs[REG_SYSCALL]
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+
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+/**
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+ * Linux 64 bit definitions
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+ */
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+#elif defined(__x86_64__)
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+
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+#define REG_SYSCALL REG_RAX
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+#define M_SYSCALL gregs[REG_SYSCALL]
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+
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+#elif defined(__arm__)
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+
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+#define M_SYSCALL arm_r7
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+
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+#endif
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+
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/**Determines if at least one sandbox is active.*/
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static int sandbox_active = 0;
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/** Holds the parameter list configuration for the sandbox.*/
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@@ -113,7 +135,9 @@ static int filter_nopar_gen[] = {
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#ifdef __NR_getgid32
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SCMP_SYS(getgid32),
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#endif
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+#ifdef __NR_getrlimt
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SCMP_SYS(getrlimit),
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+#endif
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SCMP_SYS(gettimeofday),
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SCMP_SYS(gettid),
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SCMP_SYS(getuid),
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@@ -126,7 +150,10 @@ static int filter_nopar_gen[] = {
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#endif
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SCMP_SYS(mkdir),
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SCMP_SYS(mlockall),
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+#ifdef __NR_mmap
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+ /* XXXX restrict this in the same ways as mmap2 */
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SCMP_SYS(mmap),
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+#endif
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SCMP_SYS(munmap),
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SCMP_SYS(read),
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SCMP_SYS(rt_sigreturn),
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@@ -245,8 +272,12 @@ static int
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sb_time(scmp_filter_ctx ctx, sandbox_cfg_t *filter)
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{
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(void) filter;
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+#ifdef __NR_time
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return seccomp_rule_add_1(ctx, SCMP_ACT_ALLOW, SCMP_SYS(time),
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SCMP_CMP(0, SCMP_CMP_EQ, 0));
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+#else
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+ return 0;
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+#endif
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}
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/**
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@@ -1439,7 +1470,8 @@ install_syscall_filter(sandbox_cfg_t* cfg)
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// loading the seccomp2 filter
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if ((rc = seccomp_load(ctx))) {
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- log_err(LD_BUG, "(Sandbox) failed to load!");
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+ log_err(LD_BUG, "(Sandbox) failed to load: %d (%s)!", rc,
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+ strerror(-rc));
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goto end;
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}
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@@ -1499,7 +1531,7 @@ sigsys_debugging(int nr, siginfo_t *info, void *void_context)
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if (!ctx)
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return;
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- syscall = (int) ctx->uc_mcontext.gregs[REG_SYSCALL];
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+ syscall = (int) ctx->uc_mcontext.M_SYSCALL;
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#ifdef USE_BACKTRACE
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depth = backtrace(syscall_cb_buf, MAX_DEPTH);
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