1 /*
2 * Copyright (c) 2013-2019 Huawei Technologies Co., Ltd. All rights reserved.
3 * Copyright (c) 2020-2021 Huawei Device Co., Ltd. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without modification,
6 * are permitted provided that the following conditions are met:
7 *
8 * 1. Redistributions of source code must retain the above copyright notice, this list of
9 * conditions and the following disclaimer.
10 *
11 * 2. Redistributions in binary form must reproduce the above copyright notice, this list
12 * of conditions and the following disclaimer in the documentation and/or other materials
13 * provided with the distribution.
14 *
15 * 3. Neither the name of the copyright holder nor the names of its contributors may be used
16 * to endorse or promote products derived from this software without specific prior written
17 * permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
20 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
21 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
23 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
24 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
25 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
26 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
27 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
28 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
29 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 */
31
32 #include <stdio.h>
33 #include <stdlib.h>
34 #include <errno.h>
35 #include <unistd.h>
36 #include <sys/wait.h>
37
38 #ifdef LOSCFG_QUICK_START
39 #include <sys/types.h>
40 #include <sys/stat.h>
41 #include <sys/mman.h>
42 #include <fcntl.h>
43 #include <sys/ioctl.h>
44
45 #define QUICKSTART_IOC_MAGIC 'T'
46 #define QUICKSTART_INITSTEP2 _IO(QUICKSTART_IOC_MAGIC, 0)
47 #define WAIT_FOR_SAMPLE 300000 // wait 300ms for sample
48 #endif
main(int argc,char * const * argv)49 int main(int argc, char * const *argv)
50 {
51 (void)argv;
52 int ret;
53 pid_t gid;
54 const char *shellPath = "/bin/mksh";
55
56 #ifdef LOSCFG_QUICK_START
57 const char *samplePath = "/dev/shm/sample_quickstart";
58
59 ret = fork();
60 if (ret < 0) {
61 printf("Failed to fork for sample_quickstart\n");
62 } else if (ret == 0) {
63 (void)execve(samplePath, NULL, NULL);
64 exit(0);
65 }
66
67 usleep(WAIT_FOR_SAMPLE);
68
69 int fd = open("/dev/quickstart", O_RDONLY);
70 if (fd != -1) {
71 ioctl(fd, QUICKSTART_INITSTEP2);
72 close(fd);
73 }
74 #endif
75 ret = fork();
76 if (ret < 0) {
77 printf("Failed to fork for shell\n");
78 } else if (ret == 0) {
79 gid = getpgrp();
80 if (gid < 0) {
81 printf("get group id failed, pgrpid %d, errno %d\n", gid, errno);
82 exit(0);
83 }
84 ret = tcsetpgrp(STDIN_FILENO, gid);
85 if (ret != 0) {
86 printf("tcsetpgrp failed, errno %d\n", errno);
87 exit(0);
88 }
89 (void)execve(shellPath, NULL, NULL);
90 exit(0);
91 }
92
93 while (1) {
94 ret = waitpid(-1, 0, WNOHANG);
95 if (ret == 0) {
96 sleep(1);
97 }
98 };
99 }
100