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Assert each syscall flag set and clear, and fix what it finds - #421

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xalestar wants to merge 34 commits into

sysprog21:mainfrom

xalestar:flag-matrix

Closed

Assert each syscall flag set and clear, and fix what it finds#421
xalestar wants to merge 34 commits into
sysprog21:mainfrom
xalestar:flag-matrix

Commits on Oct 15, 2026
- Assert each syscall flag set and clear
  xalestar
  committed
  3db8916
- Cover the fd-creating calls in the flag matrix
  xalestar
  committed
  36c20bc
- Refuse undefined flag bits in four syscalls
  xalestar
  committed
  d77b3b5
- Answer ENOENT for an empty path on any dirfd
  xalestar
  committed
  b99ceb4
- Refuse statx with both sync flags set
  xalestar
  committed
  382b954
- Answer EISDIR for unlink of a directory
  xalestar
  committed
  aad176d
- Report O_DIRECT on a pipe2 write end
  xalestar
  committed
  23dca1e
- Decline O_TMPFILE and refuse its misuse
  xalestar
  committed
  c6919ce
- Cover fcntl, mmap and mprotect in the flag matrix
  xalestar
  committed
  ec2de4d
- Cover memfd sealing and pipe packet mode
  xalestar
  committed
  800215c
- Refuse an mmap with no valid mapping type
  xalestar
  committed
  fd3da6a
- Refuse the mprotect bits Linux refuses
  xalestar
  committed
  c3b78d9
- Make a fresh PROT_READ mapping read-only
  xalestar
  committed
  9f7e0ff
- Refuse an unaligned offset on anonymous mmap
  xalestar
  committed
  a879ab9
- Refuse MAP_HUGETLB on a file mapping
  xalestar
  committed
  3c14a5f
- Treat a protection without access bits as none
  xalestar
  committed
  d8daa8c
- Honor MFD_NOEXEC_SEAL and give a memfd its mode
  xalestar
  committed
  a9f75f9
- Honor AT_EMPTY_PATH in faccessat2 and utimensat
  xalestar
  committed
  9b47ac6
- Move the link-to-symlink fallback into a helper
  xalestar
  committed
  cffa733
- Honor AT_EMPTY_PATH in linkat
  xalestar
  committed
  41b1d15
- Read the link an O_PATH descriptor names
  xalestar
  committed
  31ef112
- Cover clone in the flag matrix
  xalestar
  committed
  81abd03
- Refuse clone flags that need a missing partner
  xalestar
  committed
  2e728fc
- Mark every pidfd close-on-exec
  xalestar
  committed
  8004e78
- Honor CLONE_PIDFD and the tid slot in a fork clone
  xalestar
  committed
  5fe4e1b
- Let a CLONE_VM child see its tid in the slot
  xalestar
  committed
  b469621
- Hold the flag matrix rows in the coverage audit
  xalestar
  committed
  a8c562e
- Answer faccessat2 for a /proc file that is gone
  xalestar
  committed
  ceb4104
- Expect success or ENOMEM from a hugetlb memfd map
  xalestar
  committed
  476d4e4
- Drop the PROT_BTI row no lane CPU agrees on
  xalestar
  committed
  2c747be
Commits on Oct 16, 2026
- Fail a fresh mapping whose PTEs cannot be set
  xalestar
  committed
  d2ea66e
- Freeze an executable memfd sealed with F_SEAL_EXEC
  xalestar
  committed
  fe09dee
- Open a descriptor's directory for search only
  xalestar
  committed
  133af71
- Roll back a fresh mapping whose PTEs cannot be set
  xalestar
  committed
  06b583b

Commits

Commits on Oct 15, 2026

Commits on Oct 16, 2026