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nsflags: add namespace_flag_to_string_many_with_check()

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The function will be used in later commits.
This commit is contained in:
Yu Watanabe 2017-12-29 17:11:42 +09:00
parent 3e3c5a4571
commit 83606b73f6
1 changed files with 7 additions and 0 deletions
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7
src/shared/nsflags.h
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@ -42,6 +42,13 @@ unsigned long namespace_flag_from_string(const char *name);
int namespace_flag_from_string_many(const char *name, unsigned long *ret);
int namespace_flag_to_string_many(unsigned long flags, char **ret);
static inline int namespace_flag_to_string_many_with_check(unsigned long n, char **s) {
if ((n & NAMESPACE_FLAGS_ALL) != n)
return -EINVAL;
return namespace_flag_to_string_many(n, s);
}
struct namespace_flag_map {
unsigned long flag;
const char *name;