diff options
Diffstat (limited to 'libsandbox/trace.c')
| -rw-r--r-- | libsandbox/trace.c | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/libsandbox/trace.c b/libsandbox/trace.c index 0434f96..2110a46 100644 --- a/libsandbox/trace.c +++ b/libsandbox/trace.c @@ -390,6 +390,39 @@ static bool trace_check_syscall(const struct syscall_entry *se, void *regs) ret = 1; free(path); return ret; + + } else if (nr == SB_NR_EXECVE || nr == SB_NR_EXECVEAT) { + /* Try to extract environ and merge with our own. */ + char *path; + unsigned long environ, i = 0; + + if (nr == SB_NR_EXECVEAT) { + int dirfd = do_peekdata(trace_arg(regs, 1)); + unsigned long argv = trace_arg(regs, 3); + environ = trace_arg(regs, 4); + path = do_peekstr(trace_arg(regs, 2)); + __sb_debug("(%i, \"%s\", %lx, %lx{", dirfd, path, argv, environ); + } else { + path = do_peekstr(trace_arg(regs, 1)); + unsigned long argv = trace_arg(regs, 2); + environ = trace_arg(regs, 3); + __sb_debug("(\"%s\", %lx, %lx{", path, argv, environ); + } + + while (1) { + unsigned long envp = do_peekdata(environ + i); + if (!envp) + break; + + char *env = do_peekstr(envp); + if (strncmp(env, "SANDBOX_", 8) == 0) { + __sb_debug("\"%s\" ", env); + putenv(env); + } + i += sizeof(long); + } + __sb_debug("})"); + return 1; } done: |