修改4g拨号为QMI,需要在系统里后台执行quectel-CM

hc

2024-10-22 8ac6c7a54ed1b98d142dce24b11c6de6a1e239a5

 kernel/tools/testing/selftests/proc/read.c
..
..
@@ -26,8 +26,10 @@
26
26
 #include <dirent.h>
27
27
 #include <stdbool.h>
28
28
 #include <stdlib.h>
29
+#include <stdio.h>
29
30
 #include <string.h>
30
31
 #include <sys/stat.h>
32
+#include <sys/vfs.h>
31
33
 #include <fcntl.h>
32
34
 #include <unistd.h>
33
35
 
..
..
@@ -123,10 +125,22 @@
123
125
 int main(void)
124
126
 {
125
127
 	DIR *d;
128
+	struct statfs sfs;
126
129
 
127
130
 	d = opendir("/proc");
128
131
 	if (!d)
132
+		return 4;
133
+
134
+	/* Ensure /proc is proc. */
135
+	if (fstatfs(dirfd(d), &sfs) == -1) {
136
+		return 1;
137
+	}
138
+	if (sfs.f_type != 0x9fa0) {
139
+		fprintf(stderr, "error: unexpected f_type %lx\n", (long)sfs.f_type);
129
140
 		return 2;
141
+	}
142
+
130
143
 	f(d, 0);
144
+
131
145
 	return 0;
132
146
 }