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Fix bugs and regressions in the pledge command

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This change gets the pledge (formerly pledge.com) command back in tip
top shape for a 3.0.1 cosmos release. It now runs on all platforms, even
though it's mostly a no-op on ones that lack the kernel security stuff.
The binary footprint is now smaller, since it no longer needs to link
malloc. It's also now able to be built as a fat binary.
This commit is contained in:
Justine Tunney 2023-11-01 06:08:58 -07:00
parent b0e3d89942
commit 7b284f6bda
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GPG key ID: BE714B4575D6E328
18 changed files with 493 additions and 272 deletions
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7
libc/calls/closefrom.c
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@ -16,6 +16,7 @@
│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
│ PERFORMANCE OF THIS SOFTWARE. │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/calls/blockcancel.internal.h"
#include "libc/calls/calls.h"
#include "libc/calls/syscall-sysv.internal.h"
#include "libc/dce.h"
@ -37,13 +38,12 @@
* @raise EBADF on OpenBSD if `first` is greater than highest fd
* @raise EINVAL if flags are bad or first is greater than last
* @raise EMFILE if a weird race condition happens on Linux
* @raise ECANCELED if thread was cancelled in masked mode
* @raise EINTR possibly on OpenBSD
* @raise ENOMEM on Linux maybe
*/
int closefrom(int first) {
int rc, err;
(void)err;
int rc;
BLOCK_CANCELATION;
if (first < 0) {
// consistent with openbsd
// freebsd allows this but it's dangerous
@ -58,6 +58,7 @@ int closefrom(int first) {
} else {
rc = enosys();
}
ALLOW_CANCELATION;
STRACE("closefrom(%d) → %d% m", first, rc);
return rc;
}