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macro: document that DECIMAL_STR_MAX contains space for the trailing NUL byte
[elogind.git]
/
src
/
shared
/
capability.c
diff --git
a/src/shared/capability.c
b/src/shared/capability.c
index dcf7ce1a69ec58b252c4dcf1bc06ace259b5c48e..3f2f27e23fe4234c2660da30e5d99f76549aff14 100644
(file)
--- a/
src/shared/capability.c
+++ b/
src/shared/capability.c
@@
-269,11
+269,12
@@
int drop_privileges(uid_t uid, gid_t gid, uint64_t keep_capabilities) {
return log_oom();
if (keep_capabilities) {
return log_oom();
if (keep_capabilities) {
- cap_value_t bits[
sizeof(keep_capabilities)*8
];
+ cap_value_t bits[
log2u64(keep_capabilities)
];
- for (i = 0; i <
sizeof(keep_capabilities)*8
; i++)
+ for (i = 0; i <
ELEMENTSOF(bits)
; i++)
if (keep_capabilities & (1ULL << i))
bits[j++] = i;
if (keep_capabilities & (1ULL << i))
bits[j++] = i;
+ assert((keep_capabilities & (~1ULL << i)) == 0);
if (cap_set_flag(d, CAP_EFFECTIVE, j, bits, CAP_SET) < 0 ||
cap_set_flag(d, CAP_PERMITTED, j, bits, CAP_SET) < 0) {
if (cap_set_flag(d, CAP_EFFECTIVE, j, bits, CAP_SET) < 0 ||
cap_set_flag(d, CAP_PERMITTED, j, bits, CAP_SET) < 0) {