xref: /aosp_15_r20/external/clang/test/Analysis/chroot.c (revision 67e74705e28f6214e480b399dd47ea732279e315) 
1*67e74705SXin Li // RUN: %clang_cc1 -analyze -analyzer-checker=alpha.unix.Chroot -analyzer-store region -verify %s
2*67e74705SXin Li 
3*67e74705SXin Li extern int chroot(const char* path);
4*67e74705SXin Li extern int chdir(const char* path);
5*67e74705SXin Li 
foo(void)6*67e74705SXin Li void foo(void) {
7*67e74705SXin Li }
8*67e74705SXin Li 
f1(void)9*67e74705SXin Li void f1(void) {
10*67e74705SXin Li   chroot("/usr/local"); // root changed.
11*67e74705SXin Li   foo(); // expected-warning {{No call of chdir("/") immediately after chroot}}
12*67e74705SXin Li }
13*67e74705SXin Li 
f2(void)14*67e74705SXin Li void f2(void) {
15*67e74705SXin Li   chroot("/usr/local"); // root changed.
16*67e74705SXin Li   chdir("/"); // enter the jail.
17*67e74705SXin Li   foo(); // no-warning
18*67e74705SXin Li }
19*67e74705SXin Li 
f3(void)20*67e74705SXin Li void f3(void) {
21*67e74705SXin Li   chroot("/usr/local"); // root changed.
22*67e74705SXin Li   chdir("../"); // change working directory, still out of jail.
23*67e74705SXin Li   foo(); // expected-warning {{No call of chdir("/") immediately after chroot}}
24*67e74705SXin Li }
25