xref: /linux/tools/testing/selftests/proc/proc.h (revision 3eb66e91a25497065c5322b1268cbc3953642227) 
1 #pragma once
2 #undef NDEBUG
3 #include <assert.h>
4 #include <dirent.h>
5 #include <errno.h>
6 #include <stdbool.h>
7 #include <stdlib.h>
8 #include <string.h>
9 #include <unistd.h>
10 #include <sys/syscall.h>
11 
sys_getpid(void)12 static inline pid_t sys_getpid(void)
13 {
14 	return syscall(SYS_getpid);
15 }
16 
sys_gettid(void)17 static inline pid_t sys_gettid(void)
18 {
19 	return syscall(SYS_gettid);
20 }
21 
streq(const char * s1,const char * s2)22 static inline bool streq(const char *s1, const char *s2)
23 {
24 	return strcmp(s1, s2) == 0;
25 }
26 
xstrtoull(const char * p,char ** end)27 static unsigned long long xstrtoull(const char *p, char **end)
28 {
29 	if (*p == '0') {
30 		*end = (char *)p + 1;
31 		return 0;
32 	} else if ('1' <= *p && *p <= '9') {
33 		unsigned long long val;
34 
35 		errno = 0;
36 		val = strtoull(p, end, 10);
37 		assert(errno == 0);
38 		return val;
39 	} else
40 		assert(0);
41 }
42 
xreaddir(DIR * d)43 static struct dirent *xreaddir(DIR *d)
44 {
45 	struct dirent *de;
46 
47 	errno = 0;
48 	de = readdir(d);
49 	assert(de || errno == 0);
50 	return de;
51 }
52