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b50f3877 UD |
1 | #include <fcntl.h> |
2 | #include <stdio.h> | |
3 | #include <string.h> | |
4 | #include <unistd.h> | |
5 | ||
6 | static int fd; | |
7 | static char *fname; | |
8 | ||
9 | ||
10 | static void prepare (void); | |
11 | #define PREPARE(argc, argv) prepare () | |
12 | ||
13 | ||
14 | #define TEST_FUNCTION do_test () | |
15 | static int do_test (void); | |
16 | #include "../test-skeleton.c" | |
17 | ||
18 | ||
19 | static void | |
20 | prepare (void) | |
21 | { | |
22 | fd = create_temp_file ("wrewind.", &fname); | |
23 | if (fd == -1) | |
24 | exit (3); | |
25 | } | |
26 | ||
27 | ||
28 | static int | |
29 | do_test (void) | |
30 | { | |
31 | char buf[100]; | |
32 | FILE *fp; | |
33 | int result = 0; | |
34 | ||
35 | fp = fdopen (fd, "w"); | |
36 | if (fp == NULL) | |
37 | { | |
38 | puts ("cannot create file"); | |
39 | exit (1); | |
40 | } | |
41 | ||
42 | if (fputs ("one\n", fp) == EOF || fputs ("two\n", fp) == EOF) | |
43 | { | |
44 | puts ("cannot create filec content"); | |
45 | exit (1); | |
46 | } | |
47 | ||
48 | fclose (fp); | |
49 | ||
50 | fp = fopen (fname, "a+"); | |
51 | if (fp == NULL) | |
52 | { | |
53 | puts ("cannot fopen a+"); | |
54 | exit (1); | |
55 | } | |
56 | ||
57 | if (fgets (buf, sizeof (buf), fp) == NULL) | |
58 | { | |
59 | puts ("cannot read after fopen a+"); | |
60 | exit (1); | |
61 | } | |
62 | ||
63 | if (strcmp (buf, "one\n") != 0) | |
64 | { | |
65 | puts ("read after fopen a+ produced wrong result"); | |
66 | result = 1; | |
67 | } | |
68 | ||
69 | fclose (fp); | |
70 | ||
71 | fd = open (fname, O_RDWR); | |
72 | if (fd == -1) | |
73 | { | |
74 | puts ("open failed"); | |
75 | exit (1); | |
76 | } | |
77 | ||
78 | fp = fdopen (fd, "a+"); | |
79 | if (fp == NULL) | |
80 | { | |
81 | puts ("fopen after open failed"); | |
82 | exit (1); | |
83 | } | |
84 | ||
85 | if (fgets (buf, sizeof (buf), fp) == NULL) | |
86 | { | |
87 | puts ("cannot read after fdopen a+"); | |
88 | exit (1); | |
89 | } | |
90 | ||
91 | if (strcmp (buf, "one\n") != 0) | |
92 | { | |
93 | puts ("read after fdopen a+ produced wrong result"); | |
94 | result = 1; | |
95 | } | |
96 | ||
97 | fclose (fp); | |
98 | ||
99 | return result; | |
100 | } |