unix-api.c source code [clang_source_code/test/Analysis/unix-api.c]

1	// RUN: %clang_analyze_cc1 -analyzer-checker=core,unix.API -verify %s
2
3	#ifndef O_RDONLY
4	#define O_RDONLY 0
5	#endif
6
7	#ifndef NULL
8	#define NULL ((void*) 0)
9	#endif
10
11	int open(const char *, int, ...);
12	int openat(int, const char *, int, ...);
13	int close(int fildes);
14
15	void open_1(const char *path) {
16	int fd;
17	fd = open(path, O_RDONLY); // no-warning
18	if (fd > -1)
19	close(fd);
20	}
21
22	void open_2(const char *path) {
23	int fd;
24	int mode = 0x0;
25	fd = open(path, O_RDONLY, mode, NULL); // expected-warning{{Call to 'open' with more than 3 arguments}}
26	if (fd > -1)
27	close(fd);
28	}
29
30	void openat_2(int base_fd, const char *path) {
31	int fd;
32	int mode = 0x0;
33	fd = openat(base_fd, path, O_RDONLY, mode, NULL); // expected-warning{{Call to 'openat' with more than 4 arguments}}
34	if (fd > -1)
35	close(fd);
36	}
37
38	void open_3(const char *path) {
39	int fd;
40	fd = open(path, O_RDONLY, NULL); // expected-warning{{The 3rd argument to 'open' is not an integer}}
41	if (fd > -1)
42	close(fd);
43	}
44
45	void openat_3(int base_fd, const char *path) {
46	int fd;
47	fd = openat(base_fd, path, O_RDONLY, NULL); // expected-warning{{The 4th argument to 'openat' is not an integer}}
48	if (fd > -1)
49	close(fd);
50	}
51
52
53	void open_4(const char *path) {
54	int fd;
55	fd = open(path, O_RDONLY, ""); // expected-warning{{The 3rd argument to 'open' is not an integer}}
56	if (fd > -1)
57	close(fd);
58	}
59
60	void open_5(const char *path) {
61	int fd;
62	struct {
63	int val;
64	} st = {0};
65	fd = open(path, O_RDONLY, st); // expected-warning{{The 3rd argument to 'open' is not an integer}}
66	if (fd > -1)
67	close(fd);
68	}
69
70	void open_6(const char *path) {
71	int fd;
72	struct {
73	int val;
74	} st = {0};
75	fd = open(path, O_RDONLY, st.val); // no-warning
76	if (fd > -1)
77	close(fd);
78	}
79
80	void open_7(const char *path) {
81	int fd;
82	fd = open(path, O_RDONLY, &open); // expected-warning{{The 3rd argument to 'open' is not an integer}}
83	if (fd > -1)
84	close(fd);
85	}
86
87	void open_8(const char *path) {
88	int fd;
89	fd = open(path, O_RDONLY, 0.0f); // expected-warning{{The 3rd argument to 'open' is not an integer}}
90	if (fd > -1)
91	close(fd);
92	}
93

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