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Linux/tools/testing/selftests/proc/proc.h

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  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 
 12 static inline pid_t sys_getpid(void)
 13 {
 14         return syscall(SYS_getpid);
 15 }
 16 
 17 static inline pid_t sys_gettid(void)
 18 {
 19         return syscall(SYS_gettid);
 20 }
 21 
 22 static inline bool streq(const char *s1, const char *s2)
 23 {
 24         return strcmp(s1, s2) == 0;
 25 }
 26 
 27 static unsigned long long xstrtoull(const char *p, char **end)
 28 {
 29         if (*p == '') {
 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 
 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 

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