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util: when sealing memfds, also use F_SEAL_SEAL 

Let's be strict here, since its better to be safe than sorry.
This commit is contained in:
Lennart Poettering 2014-11-04 18:52:31 +01:00
parent 936c200f6c
commit db74cc0d47
1 changed files with 2 additions and 3 deletions
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5
src/shared/memfd-util.c
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@ -101,7 +101,7 @@ int memfd_set_sealed(int fd) {
assert(fd >= 0);
r = fcntl(fd, F_ADD_SEALS, F_SEAL_SHRINK | F_SEAL_GROW | F_SEAL_WRITE);
r = fcntl(fd, F_ADD_SEALS, F_SEAL_SHRINK | F_SEAL_GROW | F_SEAL_WRITE | F_SEAL_SEAL);
if (r < 0)
return -errno;
@ -117,8 +117,7 @@ int memfd_get_sealed(int fd) {
if (r < 0)
return -errno;
return (r & (F_SEAL_SHRINK | F_SEAL_GROW | F_SEAL_WRITE)) ==
(F_SEAL_SHRINK | F_SEAL_GROW | F_SEAL_WRITE);
return r == (F_SEAL_SHRINK | F_SEAL_GROW | F_SEAL_WRITE | F_SEAL_SEAL);
}
int memfd_get_size(int fd, uint64_t *sz) {