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// RUN: %clang_analyze_cc1 -analyzer-checker=unix.Chroot -analyzer-output=text -verify %s
extern int chroot(const char* path);
extern int chdir(const char* path);
void foo(void) {
}
void f1(void) {
chroot("/usr/local"); // expected-note {{chroot called here}}
foo();
// expected-warning@-1 {{No call of chdir("/") immediately after chroot}}
// expected-note@-2 {{No call of chdir("/") immediately after chroot}}
}
void f2(void) {
chroot("/usr/local"); // root changed.
chdir("/"); // enter the jail.
foo(); // no-warning
}
void f3(void) {
chroot("/usr/local"); // expected-note {{chroot called here}}
chdir("../"); // change working directory, still out of jail.
foo();
// expected-warning@-1 {{No call of chdir("/") immediately after chroot}}
// expected-note@-2 {{No call of chdir("/") immediately after chroot}}
}
void f4(void) {
if (chroot("/usr/local") == 0) {
chdir("../"); // change working directory, still out of jail.
}
}
void f5(void) {
int v = chroot("/usr/local");
if (v == -1) {
foo(); // no warning, chroot failed
chdir("../"); // change working directory, still out of jail.
}
}
void f6(void) {
if (chroot("/usr/local") == -1) {
chdir("../"); // change working directory, still out of jail.
}
}
void f7(void) {
int v = chroot("/usr/local"); // expected-note {{chroot called here}}
if (v == -1) { // expected-note {{Taking false branch}}
foo(); // no warning, chroot failed
chdir("../"); // change working directory, still out of jail.
} else {
foo();
// expected-warning@-1 {{No call of chdir("/") immediately after chroot}}
// expected-note@-2 {{No call of chdir("/") immediately after chroot}}
}
}
void f8() {
chroot("/usr/local"); // expected-note {{chroot called here}}
chdir("/usr"); // This chdir was ineffective because it's not exactly `chdir("/")`.
foo();
// expected-warning@-1 {{No call of chdir("/") immediately after chroot}}
// expected-note@-2 {{No call of chdir("/") immediately after chroot}}
}
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