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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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61d47c4e71
There are plans to change how /proc/self result is calculated, for that a test is necessary. Use direct system call because of this whole getpid caching story. Link: http://lkml.kernel.org/r/20180627195103.GB18113@avx2 Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Cc: Shuah Khan <shuahkh@osg.samsung.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
47 lines
775 B
C
47 lines
775 B
C
#pragma once
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#undef NDEBUG
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#include <assert.h>
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#include <dirent.h>
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#include <errno.h>
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#include <stdbool.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <sys/syscall.h>
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static inline pid_t sys_getpid(void)
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{
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return syscall(SYS_getpid);
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}
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static inline bool streq(const char *s1, const char *s2)
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{
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return strcmp(s1, s2) == 0;
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}
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static unsigned long long xstrtoull(const char *p, char **end)
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{
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if (*p == '0') {
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*end = (char *)p + 1;
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return 0;
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} else if ('1' <= *p && *p <= '9') {
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unsigned long long val;
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errno = 0;
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val = strtoull(p, end, 10);
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assert(errno == 0);
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return val;
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} else
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assert(0);
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}
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static struct dirent *xreaddir(DIR *d)
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{
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struct dirent *de;
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errno = 0;
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de = readdir(d);
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assert(de || errno == 0);
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return de;
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}
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