picnoir
/
Systemd
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

util: introduce memcmp_safe()

This commit is contained in:
Yu Watanabe 2018-08-08 16:22:55 +09:00
parent 7e8d494b33
commit f30faf854b
1 changed files with 10 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

13
src/basic/util.h
View File

@ -112,9 +112,7 @@ static inline void qsort_r_safe(void *base, size_t nmemb, size_t size, int (*com
qsort_r(base, nmemb, size, compar, userdata);
}
/**
* Normal memcpy requires src to be nonnull. We do nothing if n is 0.
*/
/* Normal memcpy requires src to be nonnull. We do nothing if n is 0. */
static inline void memcpy_safe(void *dst, const void *src, size_t n) {
if (n == 0)
return;
@ -122,6 +120,15 @@ static inline void memcpy_safe(void *dst, const void *src, size_t n) {
memcpy(dst, src, n);
}
/* Normal memcmp requires s1 and s2 to be nonnull. We do nothing if n is 0. */
static inline int memcmp_safe(const void *s1, const void *s2, size_t n) {
if (n == 0)
return 0;
assert(s1);
assert(s2);
return memcmp(s1, s2, n);
}
int on_ac_power(void);
#define memzero(x,l) (memset((x), 0, (l)))