Add dummy trace creator in tests
[babeltrace.git] / tests / test-dummytrace.c
CommitLineData
90219914
MD
1#include <sys/types.h>
2#include <sys/stat.h>
3#include <fcntl.h>
4#include <sys/mman.h>
5#include <stdio.h>
6#include <stdint.h>
7#include <unistd.h>
8#include <errno.h>
9#include <uuid/uuid.h>
10#include <string.h>
11
12#define FILE_LEN (4 * 4096)
13
14int main(int argc, char **argv)
15{
16 char *base, *pos;
17 int fd, ret;
18 off_t off;
19 uuid_t uuid;
20
21 fd = open("dummystream", O_RDWR|O_CREAT, S_IRUSR|S_IWUSR);
22 if (fd < 0) {
23 perror("open");
24 return -1;
25 }
26 off = posix_fallocate(fd, 0, FILE_LEN);
27 if (off < 0) {
28 printf("Error in fallocate\n");
29 return -1;
30 }
31#if 0
32 {
33 ssize_t len;
34
35 off = lseek(fd, FILE_LEN - 1, SEEK_CUR);
36 if (off < 0) {
37 perror("lseek");
38 return -1;
39 }
40 len = write(fd, "", 1);
41 if (len < 0) {
42 perror("write");
43 return -1;
44 }
45 }
46#endif
47 base = mmap(NULL, FILE_LEN, PROT_READ|PROT_WRITE,
48 MAP_SHARED, fd, 0);
49 if (!base) {
50 perror("mmap");
51 return -1;
52 }
53 pos = base;
54
55 /* magic */
56 *(uint32_t *) pos = 0xC1FC1FC1;
57 pos += sizeof(uint32_t);
58
59 /* trace_uuid */
60 ret = uuid_parse("2a6422d0-6cee-11e0-8c08-cb07d7b3a564", uuid);
61 if (ret) {
62 printf("uuid parse error\n");
63 return -1;
64 }
65 memcpy(pos, uuid, 16);
66 pos += 16;
67
68 /* stream_id */
69 *(uint32_t *) pos = 0;
70 pos += sizeof(uint32_t);
71
72 ret = munmap(base, FILE_LEN);
73 if (ret) {
74 perror("munmap");
75 return -1;
76 }
77 close(fd);
78 return 0;
79}
80
81
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