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