diff options
| author | Zbigniew Jędrzejewski-Szmek <zbyszek@in.waw.pl> | 2015-02-01 15:26:46 -0500 |
|---|---|---|
| committer | Zbigniew Jędrzejewski-Szmek <zbyszek@in.waw.pl> | 2015-02-01 17:22:32 -0500 |
| commit | 7d328b544621d4b1bec936dec612947ad8bfb65a (patch) | |
| tree | 7d772078fb7a51c9a5561eb9ca7f37eb7e68dcb6 /src/shared/capability.c | |
| parent | 51ddf61540976fc7b09ce5ace707b27f3acc3871 (diff) | |
shared/capability: go frugal on space for caps
Diffstat (limited to 'src/shared/capability.c')
| -rw-r--r-- | src/shared/capability.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/src/shared/capability.c b/src/shared/capability.c index dcf7ce1a6..3f2f27e23 100644 --- 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) { - 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; + 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) { |