Warning: That file was not part of the compilation database. It may have many parsing errors.

1// SPDX-License-Identifier: GPL-2.0
2#include <stdio.h>
3#include <stdlib.h>
4#include <unistd.h>
5#include <string.h>
6#include <errno.h>
7#include <linux/fcntl.h>
8#include <malloc.h>
9
10#include <sys/ioctl.h>
11#include <sys/syscall.h>
12#include <linux/memfd.h>
13#include <linux/udmabuf.h>
14
15#define TEST_PREFIX "drivers/dma-buf/udmabuf"
16#define NUM_PAGES 4
17
18static int memfd_create(const char *name, unsigned int flags)
19{
20 return syscall(__NR_memfd_create, name, flags);
21}
22
23int main(int argc, char *argv[])
24{
25 struct udmabuf_create create;
26 int devfd, memfd, buf, ret;
27 off_t size;
28 void *mem;
29
30 devfd = open("/dev/udmabuf", O_RDWR);
31 if (devfd < 0) {
32 printf("%s: [skip,no-udmabuf]\n", TEST_PREFIX);
33 exit(77);
34 }
35
36 memfd = memfd_create("udmabuf-test", MFD_ALLOW_SEALING);
37 if (memfd < 0) {
38 printf("%s: [skip,no-memfd]\n", TEST_PREFIX);
39 exit(77);
40 }
41
42 ret = fcntl(memfd, F_ADD_SEALS, F_SEAL_SHRINK);
43 if (ret < 0) {
44 printf("%s: [skip,fcntl-add-seals]\n", TEST_PREFIX);
45 exit(77);
46 }
47
48
49 size = getpagesize() * NUM_PAGES;
50 ret = ftruncate(memfd, size);
51 if (ret == -1) {
52 printf("%s: [FAIL,memfd-truncate]\n", TEST_PREFIX);
53 exit(1);
54 }
55
56 memset(&create, 0, sizeof(create));
57
58 /* should fail (offset not page aligned) */
59 create.memfd = memfd;
60 create.offset = getpagesize()/2;
61 create.size = getpagesize();
62 buf = ioctl(devfd, UDMABUF_CREATE, &create);
63 if (buf >= 0) {
64 printf("%s: [FAIL,test-1]\n", TEST_PREFIX);
65 exit(1);
66 }
67
68 /* should fail (size not multiple of page) */
69 create.memfd = memfd;
70 create.offset = 0;
71 create.size = getpagesize()/2;
72 buf = ioctl(devfd, UDMABUF_CREATE, &create);
73 if (buf >= 0) {
74 printf("%s: [FAIL,test-2]\n", TEST_PREFIX);
75 exit(1);
76 }
77
78 /* should fail (not memfd) */
79 create.memfd = 0; /* stdin */
80 create.offset = 0;
81 create.size = size;
82 buf = ioctl(devfd, UDMABUF_CREATE, &create);
83 if (buf >= 0) {
84 printf("%s: [FAIL,test-3]\n", TEST_PREFIX);
85 exit(1);
86 }
87
88 /* should work */
89 create.memfd = memfd;
90 create.offset = 0;
91 create.size = size;
92 buf = ioctl(devfd, UDMABUF_CREATE, &create);
93 if (buf < 0) {
94 printf("%s: [FAIL,test-4]\n", TEST_PREFIX);
95 exit(1);
96 }
97
98 fprintf(stderr, "%s: ok\n", TEST_PREFIX);
99 close(buf);
100 close(memfd);
101 close(devfd);
102 return 0;
103}
104

Warning: That file was not part of the compilation database. It may have many parsing errors.