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| author | Paul Buetow <paul@buetow.org> | 2026-05-28 10:43:37 +0300 |
|---|---|---|
| committer | Paul Buetow <paul@buetow.org> | 2026-05-28 10:43:37 +0300 |
| commit | ff8774b5ce3f6b37e5152d0dc06ae46b7a36d1da (patch) | |
| tree | 7224ccb001a0945216d6e30b5b9c326396ceba76 /docs/syscall-tracing-plan.md | |
| parent | 99e99c6ea35ae97e84d727449f9ad7c4c0a9fa23 (diff) | |
close_range: honor last bound and CLOSE_RANGE_CLOEXEC flag
close_range was captured as a single-fd fd_event carrying only first, so
the runtime evicted every tracked fd >= first, ignoring the last upper
bound and the flags. Bounded calls wrongly dropped still-open higher fds,
and CLOSE_RANGE_CLOEXEC (which keeps fds open) was treated as a full close.
Reclassify close_range to the two_fd_event kind, mapping fd_a/fd_b/extra to
first/last/flags. The runtime now closes only the inclusive [first, last]
range (a negative last from ~0U means unbounded) and skips eviction when
CLOSE_RANGE_CLOEXEC is set or the syscall fails.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
Diffstat (limited to 'docs/syscall-tracing-plan.md')
| -rw-r--r-- | docs/syscall-tracing-plan.md | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/docs/syscall-tracing-plan.md b/docs/syscall-tracing-plan.md index 25e1af3..f7fb430 100644 --- a/docs/syscall-tracing-plan.md +++ b/docs/syscall-tracing-plan.md @@ -61,7 +61,7 @@ sudo ./ior -trace-syscalls openat,recvmsg,nanosleep -no-trace-kinds null - eventfd: `epoll_create`, `epoll_create1`, `eventfd`, `eventfd2`, `fanotify_init`, `fsmount`, `fsopen`, `inotify_init`, `inotify_init1`, `landlock_create_ruleset`, `memfd_create`, `memfd_secret`, `signalfd`, `signalfd4`, `timerfd_create`, `userfaultfd` - exec: `execve`, `execveat` - fcntl: `fcntl` -- fd: `bind`, `cachestat`, `close`, `close_range`, `connect`, `copy_file_range`, `dup`, `dup2`, `epoll_pwait`, `epoll_pwait2`, `epoll_wait`, `fadvise64`, `fallocate`, `fchdir`, `fchmod`, `fchown`, `fdatasync`, `fgetxattr`, `finit_module`, `flistxattr`, `flock`, `fremovexattr`, `fsconfig`, `fsetxattr`, `fstatfs`, `fsync`, `ftruncate`, `getdents`, `getdents64`, `getpeername`, `getsockname`, `getsockopt`, `inotify_add_watch`, `inotify_rm_watch`, `io_uring_enter`, `io_uring_register`, `ioctl`, `kexec_file_load`, `landlock_add_rule`, `landlock_restrict_self`, `listen`, `lseek`, `mmap`, `mq_getsetattr`, `mq_notify`, `mq_timedreceive`, `mq_timedsend`, `newfstat`, `pidfd_getfd`, `pidfd_send_signal`, `pread64`, `preadv`, `preadv2`, `process_madvise`, `process_mrelease`, `pwrite64`, `pwritev`, `pwritev2`, `quotactl_fd`, `read`, `readahead`, `readv`, `recvfrom`, `recvmmsg`, `recvmsg`, `sendmmsg`, `sendmsg`, `sendto`, `setns`, `setsockopt`, `shutdown`, `sync_file_range`, `syncfs`, `vmsplice`, `write`, `writev` +- fd: `bind`, `cachestat`, `close`, `connect`, `copy_file_range`, `dup`, `dup2`, `epoll_pwait`, `epoll_pwait2`, `epoll_wait`, `fadvise64`, `fallocate`, `fchdir`, `fchmod`, `fchown`, `fdatasync`, `fgetxattr`, `finit_module`, `flistxattr`, `flock`, `fremovexattr`, `fsconfig`, `fsetxattr`, `fstatfs`, `fsync`, `ftruncate`, `getdents`, `getdents64`, `getpeername`, `getsockname`, `getsockopt`, `inotify_add_watch`, `inotify_rm_watch`, `io_uring_enter`, `io_uring_register`, `ioctl`, `kexec_file_load`, `landlock_add_rule`, `landlock_restrict_self`, `listen`, `lseek`, `mmap`, `mq_getsetattr`, `mq_notify`, `mq_timedreceive`, `mq_timedsend`, `newfstat`, `pidfd_getfd`, `pidfd_send_signal`, `pread64`, `preadv`, `preadv2`, `process_madvise`, `process_mrelease`, `pwrite64`, `pwritev`, `pwritev2`, `quotactl_fd`, `read`, `readahead`, `readv`, `recvfrom`, `recvmmsg`, `recvmsg`, `sendmmsg`, `sendmsg`, `sendto`, `setns`, `setsockopt`, `shutdown`, `sync_file_range`, `syncfs`, `vmsplice`, `write`, `writev` - futex: `futex`, `futex_requeue`, `futex_wait`, `futex_waitv`, `futex_wake` - keyctl: `add_key`, `keyctl`, `request_key` - mem: `brk`, `madvise`, `map_shadow_stack`, `mincore`, `mlock`, `mlock2`, `mprotect`, `mremap`, `mseal`, `munlock`, `munmap`, `pkey_mprotect`, `remap_file_pages` @@ -86,7 +86,7 @@ sudo ./ior -trace-syscalls openat,recvmsg,nanosleep -no-trace-kinds null - sysv-id: `msgget`, `semget`, `shmget` - sysv-op: `msgctl`, `msgrcv`, `msgsnd`, `semctl`, `semop`, `semtimedop`, `shmat`, `shmctl`, `shmdt` - timer-obj: `timer_create`, `timer_delete`, `timer_getoverrun`, `timer_gettime`, `timer_settime` -- two-fd: `kcmp`, `move_mount` +- two-fd: `close_range`, `kcmp`, `move_mount` ## Bytes vs Non-Bytes Classification |