1 #define _XOPEN_SOURCE 500
15 /* Print formated string into automtically reallocated @uffer.
16 * @buffer automatically reallocated buffer. Must be &NULL or preallocated
18 * @format format string as for printf(3)
19 * @ap list of variadic arguments, after call will be in udefined state
20 * @Returns number of bytes printed. In case of errror, -1 and NULL @buffer */
21 int test_vasprintf(char **buffer
, const char *format
, va_list ap
) {
23 int length
, new_length
;
26 if (!buffer
|| !format
) {
35 length
= vsnprintf(NULL
, 0, format
, aq
) + 1;
43 new_buffer
= realloc(*buffer
, length
);
51 new_length
= vsnprintf(*buffer
, length
, format
, ap
);
52 if (new_length
>= length
) {
62 /* Print formated string into automtically reallocated @uffer.
63 * @buffer automatically reallocated buffer. Must be &NULL or preallocated
65 * @format format string as for printf(3)
66 * @... variadic arguments
67 * @Returns number of bytes printed. In case of errror, -1 and NULL @buffer */
68 int test_asprintf(char **buffer
, const char *format
, ...) {
72 ret
= test_vasprintf(buffer
, format
, ap
);
78 int test_mmap_file(const char *file
, int *fd
, void **buffer
, size_t *length
) {
79 struct stat file_info
;
81 if (!file
|| !fd
|| !buffer
|| !length
) return -1;
84 *fd
= open(file
, O_RDONLY
);
86 fprintf(stderr
, "%s: Could not open file: %s\n", file
, strerror(errno
));
90 if (-1 == fstat(*fd
, &file_info
)) {
91 fprintf(stderr
, "%s: Could not get file size: %s\n", file
,
96 if (file_info
.st_size
< 0) {
97 fprintf(stderr
, "File `%s' has negative size: %jd\n", file
,
98 (intmax_t) file_info
.st_size
);
102 *length
= file_info
.st_size
;
104 *buffer
= mmap(NULL
, *length
, PROT_READ
, MAP_PRIVATE
, *fd
, 0);
105 if (*buffer
== MAP_FAILED
) {
106 fprintf(stderr
, "%s: Could not map file to memory: %s\n", file
,
116 int test_munmap_file(int fd
, void *buffer
, size_t length
) {
118 long int page_size
= sysconf(_SC_PAGE_SIZE
);
119 size_t pages
= (length
% page_size
) ?
120 ((length
/ page_size
) + 1) * page_size
:
123 err
= munmap(buffer
, pages
);
125 fprintf(stderr
, "Could not unmap memory at %p and length %zu: %s\n",
126 buffer
, pages
, strerror(errno
));
131 fprintf(stderr
, "Could close file descriptor %d: %s\n", fd
,