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Document the order of arguments for cap_issubset. It's not instantly clear

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which order the argument should be in.  So give an example.

Signed-off-by: Eric Paris <eparis@redhat.com>
Acked-by: Serge Hallyn <serue@us.ibm.com>
Signed-off-by: James Morris <jmorris@namei.org>
This commit is contained in:
Eric Paris
2008-11-11 21:48:07 +11:00
committed by James Morris
parent 39c9aede2b
commit 9d36be76c5
1 changed files with 7 additions and 0 deletions
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7
include/linux/capability.h
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@@ -457,6 +457,13 @@ static inline int cap_isclear(const kernel_cap_t a)
return 1; return 1;
} }
/*
* Check if "a" is a subset of "set".
* return 1 if ALL of the capabilities in "a" are also in "set"
* cap_issubset(0101, 1111) will return 1
* return 0 if ANY of the capabilities in "a" are not in "set"
* cap_issubset(1111, 0101) will return 0
*/
static inline int cap_issubset(const kernel_cap_t a, const kernel_cap_t set) static inline int cap_issubset(const kernel_cap_t a, const kernel_cap_t set)
{ {
kernel_cap_t dest; kernel_cap_t dest;